CN220628965U - Light rare earth permanent magnet brushless coreless motor - Google Patents

Abstract

The utility model provides a light-weight rare earth permanent magnet brushless coreless motor, and belongs to the field of motors. The permanent magnet direct current motor rotor solves the problems that an iron core is arranged in an existing permanent magnet direct current motor rotor, the whole motor is heavy, and the power is low. This brushless coreless motor of light-weight tombarthite permanent magnetism, casing, motor winding, stator dish, even rare earth's magnet, yoke board, axle jump ring, apron and motor shaft, the yoke board have two, install the aluminum alloy packing ring on the motor shaft, and the aluminum alloy packing ring sticiss on the motor shaft of axle jump ring, paste on the yoke board and have even a plurality of magnet, and the polarity between the magnet links to each other is opposite, paste the yoke board of magnet and pass through the screw fixation on the aluminum alloy packing ring, the stator dish is located inside the casing, and the stator dish is located between two yoke boards, set up the locating hole on the stator dish, be equipped with the constant head tank that is used for plastic envelope an organic whole on the stator dish, the axial has drawn forth three-phase power cord on the outer disc of stator dish. The utility model has the advantages of light weight and high power.

Description

Light rare earth permanent magnet brushless coreless motor

Technical Field

The utility model belongs to the field of motors, relates to a brushless motor, and in particular relates to a light-weight rare-earth permanent magnet brushless coreless motor.

Background

The permanent magnet direct current motor can be classified into a permanent magnet brushless direct current motor and a permanent magnet brush direct current motor according to the presence or absence of brushes. The permanent magnet direct current motor is a direct current motor which uses permanent magnets to establish a magnetic field.

According to the application number CN02266775.X retrieved on the patent net, the patent name is a permanent magnet direct current motor, it discloses a permanent magnet direct current motor including a casing, a stator, a rotor, brush assembly and brush end cover and driving end cover, the rotor comprises iron core assembly, a coil, the commutator assembly, pivot and rotor core clamp ring, the rotor passes through the bearing to be installed between both ends covers, both ends cover are fixed on the casing, the pivot diameter equal, set up the circlip for the axle in the pivot of bearing side of brush end cover, set up the shell of adjustment washer machine in the pivot of driving end cover bearing side, the rotor of this motor is the so can produce iron loss and magnetic damping when the motor works and can lead to the power decline of motor, have the iron core motor to have more than the iron core motor opportunity weight, the physique is bigger, feel bad for user's experience, also fail to play the effect in some small and exquisite fields.

The coreless brushless motor has the advantages of light weight, high power density, high efficiency, power saving and energy saving, is a novel special motor, and has wide application prospect. Can upgrade industry, save energy and reduce emission.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a rare earth permanent magnet brushless coreless motor with high efficiency and long service life and light weight.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a brushless coreless motor of lightweight tombarthite permanent magnetism, includes casing, motor winding, stator dish, even rare earth's magnet, yoke board, axle jump ring, apron and motor shaft, the yoke board have two, its characterized in that, the motor shaft on install the aluminum alloy packing ring, and the aluminum alloy packing ring sticis on the motor shaft of axle jump ring, the yoke board on paste and have even number magnet, and the polarity between the magnet links to each other is opposite, the yoke board of pasting magnet pass through the fix with screw on the aluminum alloy packing ring, the stator dish be located inside the casing, and the stator dish is located between two yoke boards, namely the stator dish is located the space that the magnet on two yoke boards produced, the stator dish on set up the locating hole, the stator dish on be equipped with and be used for moulding integrative constant head tank, the outer disc on axial extraction have three-phase power cord.

In the light rare earth permanent magnet brushless coreless motor, the motor shaft is provided with the shaft snap spring for limiting the aluminum alloy, and the motor shaft is provided with the clamping groove for installing the snap spring.

In the light rare earth permanent magnet brushless coreless motor, the positioning hole 2 for positioning the stator plate is formed in the inner wall of the shell, and the positioning hole 2 in the inner wall of the shell is fixed with the positioning hole in the stator plate through the positioning pin.

In the foregoing light-weight rare earth permanent magnet brushless coreless motor, the even rare earth magnets are preferably circular or fan-shaped.

In the light rare earth permanent magnet brushless coreless motor, the bakelite insulating pressing plate is arranged at the side end of the cover plate inside the shell, the Hall plate is arranged on the bakelite insulating pressing plate, a screw hole for fixing is formed in the bakelite insulating pressing plate, a positioning fixing hole for positioning is formed in the bakelite insulating pressing plate, and the Hall plate adjusting moving hole is formed in the bakelite insulating pressing plate.

In the light rare earth permanent magnet brushless coreless motor, the Hall plate is provided with the fixed screw holes capable of adjusting positions, and a plurality of Hall outgoing lines are led out of the Hall plate.

In the light rare earth permanent magnet brushless coreless motor, the shell is provided with the insulating gasket, the insulating gasket is fixed on the shell by glue, and the insulating gasket is positioned between the inner circular wall of the shell and the stator disc and is attached to the stator disc.

In the light-weight rare earth permanent magnet brushless coreless motor, the electric angle of the motor is 120 degrees or 60 degrees, and the generated waveform is a sine wave.

In the light rare earth permanent magnet brushless coreless motor, the motor winding is a three-phase winding, the multiplication of the three-phase number and the motor pole number is the slot number of the motor, the motor windings are connected end to end, and the connection method is a Y-shaped connection method.

In the foregoing light-weight rare earth permanent magnet brushless coreless motor, two bearings are mounted on the motor shaft, and the mounting of the yoke plate with the magnet and the motor shaft together with the bearings form the rotor of the brushless motor.

Compared with the prior art, the light-weight motor adopts a rare-earth permanent magnet coreless mode. The motor rotor consists of a magnetic yoke plate, a magnet, a motor shaft and a bearing, so that compared with the traditional iron core rotor, the weight of the iron-core-free motor rotor is lighter, and the motor rotor has no iron loss and no magnetic damping when rotating, so that the power of the motor is greatly improved.

Drawings

Fig. 1 is a schematic diagram of a hall plate structure.

Fig. 2 is a schematic view of a bakelite insulation platen structure.

Fig. 3 is a schematic view of a stator plate structure.

Fig. 4 is a schematic overall structure.

Fig. 5 is a schematic view of a stator plate mounting structure.

Fig. 6 is a schematic cross-sectional view of a bakelite insulation platen according to the present utility model.

Fig. 7 is a schematic cross-sectional structure of a stator plate of the present utility model.

FIG. 8 is a schematic cross-sectional view of a Hall plate of the present utility model.

In the figure, 1, a shell; 2. a motor winding; 3. a stator plate; 4. a yoke plate; 5. a magnet; 6. a motor shaft; 7. an aluminum alloy gasket; 8. shaft clamp springs; 9. a clamping groove; 10. positioning holes; 11. a positioning groove; 12. a three-phase power line; 13. a bakelite insulating pressing plate; 14. a Hall plate; 15. a screw hole; 16. positioning and fixing holes; 17. the Hall plate adjusts the moving hole; 18. a fixed screw hole; 19. an insulating gasket; 20. a bearing; 21. a cover plate; 22. a positioning hole 2; 23. hall lead-out wire.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the object of the present utility model can be achieved by the following technical solutions: this brushless coreless motor of light-weight tombarthite permanent magnetism, including casing 1, motor winding 2, stator dish 3, even rare earth's magnet 5, yoke board 4, axle jump ring 8, apron 21 and motor shaft 6, there are two yoke board 4, install aluminum alloy packing ring 7 on the motor shaft 6, and aluminum alloy packing ring 7 sticis on the motor shaft 6 of axle jump ring 8, paste on the yoke board 4 and have even number magnet 5, and the polarity between the magnet 5 links to each other is opposite, paste the yoke board 4 of magnet 5 and pass through the screw fixation on aluminum alloy packing ring 7, stator dish 3 is located inside casing 1, and stator dish 3 is located between two yoke boards 4, also be located between the space that magnet 5 produced on two yoke boards 4 of stator dish 3, locating hole 10 has been seted up on the stator dish 3, be equipped with on the stator dish 3 and be used for plastic envelope an organic whole constant head tank 11, the axial has drawn forth three-phase power cord 12 on the excircle plane of stator dish 3.

Further, a shaft snap spring 8 for limiting aluminum alloy is arranged on the motor shaft 6, and a clamping groove 9 for installing the snap spring is formed in the motor shaft 6.

Further, a positioning hole 222 for positioning the stator plate 3 is formed in the inner wall of the casing 1, and the positioning hole 222 in the inner wall of the casing 1 is fixed with the positioning hole 10 in the stator plate 3 through a positioning pin.

Further, the even rare earth magnets 5 are preferably circular or fan-shaped.

Further, a bakelite insulating pressing plate 13 is arranged inside the shell 1 and positioned at the side end of the cover plate 21, a Hall plate 14 is arranged on the bakelite insulating pressing plate 13, a screw hole 15 for fixing is formed in the bakelite insulating pressing plate 13, a positioning fixing hole 16 for positioning is formed in the bakelite insulating pressing plate 13, a Hall plate adjusting moving hole 17 is formed in the bakelite insulating pressing plate 13, and the bakelite insulating pressing plate 13 is arranged in the shell 1 through the positioning fixing hole 16.

Further, a fixed screw hole 18 capable of adjusting the position is formed in the hall plate 14, a plurality of hall lead-out wires 23 are led out of the hall plate 14, the hall plate 14 can be adjusted to a proper position through the fixed screw hole 18, and the hall plate 14 is positioned with the outer circle of the hall plate 14 against the inner circular wall of the shell 1.

Further, an insulating washer 19 is mounted on the housing 1, the insulating washer 19 is fixed on the housing 1 by glue, and the insulating washer 19 is located between the inner circular wall of the housing 1 and the stator plate 3 and is attached to the stator plate 3.

Further, the electrical angle of the motor is 120 degrees or 60 degrees, and the generated waveform is sine wave.

Further, the motor winding 2 is a three-phase winding, the multiplication of the three-phase number and the motor pole number is the slot number of the motor, the motor winding 2 is connected end to end, and the connection method is a Y-shaped connection method.

Further, two bearings 20 are mounted on the motor shaft 6, and the mounting of the yoke plate 4 with the magnets 5 and the motor shaft 6 plus the bearings 20 constitute the rotor of the brushless motor.

The motor is assembled in the following way: an insulating washer 19 is placed on the housing 1 and is fixed with glue. The stator plate 3 is placed in the azimuth, a positioning pin of 2mm is inserted for fixation, and then the bakelite insulating pressing plate 13 is placed in the azimuth. The Hall plate 14 is placed on the bakelite insulating pressing plate 13, and the Hall plate 14 is positioned and rotated by the outer circle of the Hall plate 14 against the inner circular wall of the shell 1 to find a proper position to screw and fix the screw on the bakelite insulating pressing plate 13. And leading out three-phase power lines 12UVW and 5 Hall lines, and finally covering a cover plate 21 to screw down the screws.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the housing 1, the motor winding 2, the stator plate 3, the yoke plate 4, the magnet 5, the motor shaft 6, the aluminum alloy washer 7, the shaft snap spring 8, the card slot 9, the positioning hole 10, the positioning slot 11, the three-phase power line 12, the bakelite insulating pressing plate 13, the hall plate 14, the screw hole 15, the positioning fixing hole 16, the hall plate adjusting moving hole 17, the fixing screw hole 18, the insulating washer 19, the bearing 20, the cover plate 21, the positioning hole 222, the hall lead wire 23 are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (10)

1. The utility model provides a brushless coreless motor of lightweight tombarthite permanent magnetism, includes casing (1), motor winding (2), stator dish (3), magnet (5) of even rare earth, yoke board (4), axle jump ring (8), apron (21) and motor shaft (6), yoke board (4) have two, characterized in that, motor shaft (6) on install aluminum alloy packing ring (7), and aluminum alloy packing ring (7) sticis on motor shaft (6) of axle jump ring (8), yoke board (4) on paste and have even number magnet (5), and magnet (5) link to each other the polarity between opposite, yoke board (4) of pasting magnet (5) be fixed in on aluminum alloy packing ring (7) through the screw, stator dish (3) be located casing (1) inside, and stator dish (3) are located between two yoke boards (4), also stator dish (3) are located the space that magnet (5) produced on two yoke boards (4), stator dish (3) on set up locating hole (10), stator dish (3) on be equipped with the axial direction of a plastic envelope of stator dish (3) have, stator dish (12).

2. The light rare earth permanent magnet brushless coreless motor of claim 1, wherein the motor shaft (6) is provided with a shaft snap spring (8) for limiting aluminum alloy, and the motor shaft (6) is provided with a clamping groove (9) for mounting the snap spring.

3. The light rare earth permanent magnet brushless coreless motor of claim 1, wherein the inner wall of the shell (1) is provided with a positioning hole 2 (22) positioned with the stator disc (3), and the positioning hole 2 (22) on the inner wall of the shell (1) is fixed with a positioning hole (10) on the stator disc (3) through a positioning pin.

4. A lightweight rare earth permanent magnet brushless coreless motor as claimed in claim 1, wherein the even rare earth magnets (5) are intended to be circular or sector-shaped.

5. The light rare earth permanent magnet brushless coreless motor of claim 1, wherein a bakelite insulating pressing plate (13) is arranged at the side end of the cover plate (21) inside the shell (1), a hall plate (14) is arranged on the bakelite insulating pressing plate (13), a screw hole (15) for fixing is formed in the bakelite insulating pressing plate (13), a positioning fixing hole (16) for positioning is formed in the bakelite insulating pressing plate (13), and a hall plate adjusting moving hole (17) is formed in the bakelite insulating pressing plate (13).

6. The light-weight rare-earth permanent magnet brushless coreless motor of claim 5, wherein the hall plate (14) is provided with a fixed screw hole (18) capable of adjusting the position, and a plurality of hall lead wires (23) are led out of the hall plate (14).

7. The light-weight rare earth permanent magnet brushless coreless motor of claim 1, wherein the shell (1) is provided with an insulating gasket (19), the insulating gasket (19) is fixed on the shell (1) by glue, and the insulating gasket (19) is positioned between the inner circular wall of the shell (1) and the stator disc (3) and is adhered to the stator disc (3).

8. The light-weight rare earth permanent magnet brushless coreless motor of claim 1, wherein the electrical angle of the motor is 120 degrees or 60 degrees, and the generated waveform is a sine wave.

9. The light-weight rare-earth permanent magnet brushless coreless motor of claim 1, wherein the motor winding (2) is a three-phase winding, the multiplication of the number of three-phase phases and the number of motor poles is the number of slots of the motor, and the motor winding (2) is connected end to end, and the connection method is a Y-connection method.

10. A lightweight rare earth permanent magnet brushless coreless motor as claimed in claim 1, wherein the motor shaft (6) is provided with two bearings (20), and the mounting of the yoke plate (4) with the magnets (5) and the motor shaft (6) plus bearings (20) form the rotor of the brushless motor.