High flux rotor

Abstract

The invention discloses a high-flux rotor, which comprises a rotating shaft, a plurality of magnetic conductive discs and a plurality of permanent magnets, wherein the multiple permanent magnets are arranged around the rotating shaft, and the included angle between every two adjacent permanent magnets is larger than 0 degree and smaller than or equal to 90 degrees; the plurality of magnetic conductive discs comprise a plurality of superposed first magnetic conductive discs and a plurality of superposed second magnetic conductive discs; each first magnetic conductive disc is annularly provided with a plurality of electrode parts, and each electrode part is punched to form a through punched hole; each second magnetic conductive disc is annularly provided with a plurality of electrode parts, and each electrode part is stamped to form a convex part; the convex parts of two adjacent second magnetic conductive discs are overlapped; and the plurality of convex parts of the second magnetic conductive disc adjacent to the first magnetic conductive disc respectively penetrate into the plurality of punched holes of the first magnetic conductive disc. According to the high-magnetic-flux rotor, the problem that a rotor of an existing permanent magnet motor is poor in magnetic flux or insufficient in structural strength can be solved, and the high-magnetic-flux rotor which is high in structural strength and high in magnetic flux density is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a high magnetic flux rotor with high structural strength. Background Art

[0002] Compared with traditional brushed DC motors, permanent magnet motors are gradually being widely used due to their advantages such as simple structure, small size and low failure rate.

[0003] The rotor is one of the important parts of the permanent magnet motor. In order to reduce the energy loss in the rotor and the iron loss, the rotor of the permanent magnet motor usually includes multiple stacked silicon steel sheets.

[0004] The multiple silicon steel sheets of the existing permanent magnet motor rotor are usually combined by welding or riveting, and there is also a method of combining multiple silicon steel sheets by glue injection. However, the traditional permanent magnet motor rotor that combines multiple silicon steel sheets by welding has the problem of poor magnetic flux; and the permanent magnet motor rotor that combines multiple silicon steel sheets by glue injection also has the problem of insufficient structural strength when the rotor rotates at high speed. It can be seen that there is still room for improvement and progress in the existing permanent magnet motor rotor. Summary of the invention

[0005] In order to solve the above problems of the rotor of the existing permanent magnet motor, the present invention provides a high magnetic flux rotor, which can achieve the purpose of having a stable structure and a high magnetic flux density.

[0006] The high magnetic flux rotor proposed by the present invention to solve the technical problem comprises:

[0007] A rotating shaft, which is rod-shaped and includes two opposite ends;

[0008] a plurality of guide disks, each of which is in the shape of a thin sheet and includes a sleeve hole, a plurality of electrode parts and a plurality of embedding recesses, the sleeve hole is set through the middle part of the guide disk, a plurality of electrode parts are arranged around the sleeve hole at intervals, and an embedding recess is formed between two adjacent electrode parts; each of the guide disks is sleeved on the rotating shaft with the sleeve hole set, and the plurality of guide disks are overlapped, and the embedding recesses of the plurality of guide disks form a plurality of embedding grooves extending along the axial direction of the rotating shaft; and

[0009] A plurality of permanent magnets, wherein the plurality of permanent magnets are respectively embedded in the plurality of embedding grooves, and an angle between two adjacent permanent magnets is greater than 0° and less than or equal to 90°;

[0010] The plurality of guide disks include a plurality of first guide disks that overlap with each other and a plurality of second guide disks that overlap with each other;

[0011] Each of the electrode portions of each of the first conductive disks is punched to form a punched hole penetrating therethrough, wherein the punched hole has a rectangular outline arranged along the radial direction of the first conductive disk;

[0012] Each electrode portion of each second guide magnetic disk is punched to form a convex portion, and the convex portion is protruded toward the plurality of first guide magnetic disks and has a rectangular outline arranged along the radial direction of the second guide magnetic disk; the convex portions of the electrode portions of two adjacent second guide magnetic disks overlap; the convex portions of the plurality of electrode portions of the second guide magnetic disk adjacent to the first guide magnetic disk respectively penetrate into the punched holes of the plurality of electrode portions of the first guide magnetic disk.

[0013] As described above, in the high magnetic flux rotor, each of the second conductive magnetic disks includes a sheet having a sheet thickness; the convex portion of each of the electrode portions of each of the second conductive magnetic disks has a convex portion thickness; and the thickness of each of the convex portions is 2 to 3 times the thickness of each of the sheet bodies.

[0014] In the high magnetic flux rotor as described above, the punching hole of each electrode portion of each first conductive magnetic disk has a length and a width; and the ratio of the length of the punching hole to the width of the punching hole is 3:1.

[0015] As described above, in the high magnetic flux rotor, each of the embedding recesses of each of the conductive magnetic disks comprises two side recesses, and the two side recesses are adjacent to the sleeve hole and are recessed in opposite directions.

[0016] As the high magnetic flux rotor described above, each of the magnetic conductive disks is a silicon steel sheet.

[0017] The high magnetic flux rotor as described above, wherein each of the conductive magnetic disks is a component made of cobalt-vanadium alloy.

[0018] In the high magnetic flux rotor as described above, each of the permanent magnets is a member made of ferrite.

[0019] In the high magnetic flux rotor as described above, each of the permanent magnets is a component made of neodymium iron boron.

[0020] In the high magnetic flux rotor as described above, each of the permanent magnets is a component made of samarium-cobalt alloy.

[0021] The technical effect that can be obtained by the technical means of the present invention is that: the high magnetic flux rotor of the present invention, its first conductive magnetic disk and the second conductive magnetic disk are respectively provided with punching holes and protrusions on the electrode part, which can not only be used to connect multiple conductive magnetic disks along the axial direction of the rotating shaft and improve the manufacturing qualification rate of the present invention, but also can produce magnetic isolation bridges and enable each of the conductive magnetic disks to increase its magnetic flux density, thereby improving the output torque of the motor using the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the appearance of a preferred embodiment of the present invention;

[0023] Figure 2 It is an end view of a preferred embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the local components of a preferred embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of a guide disk according to a preferred embodiment of the present invention;

[0026] Figure 5 A partial enlarged view of a guide disk of a preferred embodiment of the present invention;

[0027] Figure 6 A cross-sectional view of a guide disk according to a preferred embodiment of the present invention;

[0028] Figure 7 A partial enlarged view of a guide disk of a preferred embodiment of the present invention;

[0029] Figure 8 A partially enlarged cross-sectional view of a guide disk of a preferred embodiment of the present invention;

[0030] Fig. 9 It is a cross-sectional schematic diagram of a guide disk of a preferred embodiment of the present invention;

[0031] Fig.10 It is a cross-sectional schematic diagram of a guide disk of a preferred embodiment of the present invention;

[0032] Fig.11 This is a plan view of a preferred embodiment of the present invention used in conjunction with a stator. DETAILED DESCRIPTION

[0033] In order to understand the technical features and practical effects of the present invention in detail and to realize the present invention according to the present invention, the preferred embodiments shown in the accompanying drawings are described in detail as follows:

[0034] like Figure 1 As shown, a high magnetic flux rotor according to a preferred embodiment of the present invention includes a rotating shaft 10 , a plurality of conductive magnetic disks 20 (a first conductive magnetic disk 20A and a second conductive magnetic disk 20B) and a plurality of permanent magnets 30 .

[0035] like Figure 1 As shown, the rotating shaft 10 is rod-shaped and includes a first end 101 and a second end 102 that are opposite to each other.

[0036] like Figures 1 to 3As shown, each guide disk 20 is in the shape of a thin sheet and includes a sheet body 21, a sleeve hole 22, a plurality of electrode parts 23 and a plurality of embedding recesses 24; wherein, the sheet body 21 of each guide disk 20 has a sheet body thickness T1; the sleeve hole 22 is provided through the middle part of the sheet body 21; a plurality of electrode parts 23 are spaced around the outside of the sleeve hole 22, and an embedding recess 24 is formed between two adjacent electrode parts 23; each embedding recess 24 includes two side recesses 241, and the two side recesses 241 are close to the sleeve hole 22 and are recessed in opposite directions; each guide disk 20 is sleeved on the rotating shaft 10 with the sleeve hole 22 provided, and a plurality of guide disks 20 are overlapped, and the embedding recesses 24 of the plurality of guide disks 20 form a plurality of embedding grooves extending along the axial direction of the rotating shaft 10.

[0037] like Figures 1 to 3 As shown, the plurality of guide disks 20 include a plurality of first guide disks 20A stacked together and a plurality of second guide disks 20B stacked together.

[0038] like Figures 1 to 5 As shown, each electrode portion 23 of each first guide disk 20A is punched to form a punch hole 231 that passes through the sheet 21 of the first guide disk 20A; the punch hole 231 has a rectangular outline arranged along the radial direction of the first guide disk 20A, and the punch hole 231 includes a length L defined along the radial direction of the first guide disk 20A, and a width W perpendicular to the length L. The ratio of the length L and the width W of the punch hole 231 of each electrode portion 23 is 3 to 1.

[0039] like Figures 1 to 8 As shown, each electrode portion 23 of each second guide disk 20B is punched to form a punch hole 231 and a protrusion 232, and the protrusion 232 is protruded toward the plurality of first guide disks 20A and has a protrusion thickness T2 and a rectangular profile arranged along the radial direction of the second guide disk 20B; the protrusion 232 of each electrode portion 23 of each second guide disk 20B, its protrusion thickness T2 is defined as the distance from the surface of the second guide disk 20B facing the first guide disk 20A to the top of the protrusion 232, and each protrusion thickness T2 is 2 to 3 times the thickness T1 of each sheet body.

[0040] like Fig. 9 and Fig.10 As shown, the protrusions 232 of the electrode portions 23 of two adjacent second guide disks 20B overlap; wherein, the protrusions 232 of multiple electrode portions 23 of the second guide disk 20B adjacent to multiple first guide disks 20A respectively penetrate into the punching holes 231 of multiple electrode portions 23 of the first guide disk 20A.

[0041] like Figure 1 and Fig.11As shown, a plurality of permanent magnets 30 are respectively embedded in a plurality of embedding grooves, and an included angle θ between two adjacent permanent magnets 30 is greater than 0° and less than or equal to 90°.

[0042] like Fig.11 As shown, in a high torque motor including the high flux rotor of the present invention, the high flux rotor of the present invention can be used in conjunction with a stator 40 .

[0043] In the present invention, the punching hole 231 and the convex part 232 are set on the electrode part 23 between two adjacent permanent magnets 30. In addition to being used to connect multiple magnetic disks 20 along the axial direction of the rotating shaft 10 and improve the manufacturing qualification rate of the present invention, it can also generate a magnetic isolation bridge and make each magnetic disk 20 have a 10% to 25% increase in magnetic flux density compared to the existing silicon steel sheet, and make the motor using the high magnetic flux rotor of the present invention have a 5% to 15% increase in torque. Since multiple magnetic disks 20 are stacked along the axial direction of the rotating shaft 10, the volume of the high magnetic flux rotor of the present invention can be adjusted according to the number or size of each permanent magnet 30.

[0044] In practice, each magnetic conductor 20 can be made of silicon steel sheet or cobalt-vanadium alloy, and each permanent magnet 30 can be made of ferrite, neodymium iron boron or samarium cobalt alloy.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician in the field, without departing from the scope of the technical solution described in the present invention, can make equivalent embodiments by partial changes or modifications using the technical content disclosed in the present invention, and without departing from the technical solution content of the present invention, which still fall within the protection scope of the present invention.

Claims

1. A high magnetic flux rotor, characterized in that: include: A rotating shaft, which is rod-shaped and includes two opposite ends; A plurality of guide disks, each of which is in the shape of a thin sheet and includes a sleeve hole, a plurality of electrode parts and a plurality of embedding recesses, wherein the sleeve hole is provided through the middle part of the guide disk, a plurality of electrode parts surround the sleeve hole at intervals, and an embedding recess is formed between two adjacent electrode parts; each of the guide disks is sleeved on the rotating shaft with the sleeve hole provided, and the plurality of guide disks are overlapped, and the embedding recesses of the plurality of guide disks form a plurality of embedding grooves extending along the axial direction of the rotating shaft; as well as A plurality of permanent magnets, wherein the plurality of permanent magnets are respectively embedded in the plurality of embedding grooves, and an angle between two adjacent permanent magnets is greater than 0° and less than or equal to 90°; Wherein, the plurality of guide disks include a plurality of first guide disks overlapped with each other and a plurality of second guide disks overlapped with each other; Each of the electrode portions of each of the first conductive disks is punched to form a punched hole penetrating therethrough, wherein the punched hole has a rectangular outline arranged along the radial direction of the first conductive disk; Each electrode portion of each second guide disk is punched to form a convex portion, the convex portion is protruded toward the first guide disk and has a rectangular outline arranged along the radial direction of the second guide disk; the convex portions of the electrode portions of two adjacent second guide disks overlap; the convex portions of the multiple electrode portions of the second guide disk adjacent to the first guide disk respectively penetrate into the punched holes of the multiple electrode portions of the first guide disk.

2. The high magnetic flux rotor according to claim 1, characterized in that: Each of the second conductive disks includes a sheet having a sheet thickness; the convex portion of each of the electrode portions of each of the second conductive disks has a convex portion thickness; and the thickness of each convex portion is 2 to 3 times the thickness of each of the sheet.

3. The high magnetic flux rotor according to claim 1, characterized in that: The punching holes of each of the electrode parts of each of the first conductive disks have a length and a width; the ratio of the length of the punching holes to the width of the punching holes is 3:

1.

4. The high magnetic flux rotor according to claim 2, characterized in that: The punching holes of each of the electrode parts of each of the first conductive disks have a length and a width; the ratio of the length of the punching holes to the width of the punching holes is 3:

1.

5. The high magnetic flux rotor according to claim 4, characterized in that: Each of the embedding recesses of each of the guide disks includes two side recesses, and the two side recesses are close to the sleeve hole and are recessed in opposite directions.

6. The high flux rotor according to any one of claims 1 to 5, characterized in that: Each of the guide magnetic disks is a silicon steel sheet.

7. The high flux rotor according to any one of claims 1 to 5, characterized in that: Each of the guide disks is a component made of cobalt-vanadium alloy.

8. The high flux rotor according to any one of claims 1 to 5, characterized in that: Each of the permanent magnets is a member made of ferrite.

9. The high flux rotor according to any one of claims 1 to 5, characterized in that: Each of the permanent magnets is a component made of neodymium iron boron.

10. The high flux rotor according to any one of claims 1 to 5, characterized in that: Each of the permanent magnets is a component made of samarium-cobalt alloy.

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