Radial rotor punching sheet structure

Abstract

The utility model relates to the technical field of motor rotors, in particular to a radial rotor punching sheet structure, which comprises a circular substrate, a central hole is arranged in the middle of the substrate, and a plurality of closed slotted structures are uniformly distributed on the substrate around the center of the substrate, and is characterized in that each slotted structure comprises a rotor slot and a vent hole, the rotor grooves are communicated with the ventilation holes, second magnetic isolation bridges are formed between the rotor grooves and the edges of the substrates, and first magnetic isolation bridges are formed between every two adjacent ventilation holes. The rotor adopts a closed slot design, so that the strength of the rotor is improved, the motor can operate at a higher rotating speed, and meanwhile, the closed slot can reduce the harmonic content of the rotor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotors, in particular to a radial rotor punching sheet structure. Background Art

[0002] Radial rotor laminations are mostly used in motors with relatively large outer diameters. At present, in radial rotor laminations, the number of rotor slot openings on the upper side is set in an open shape. This open-shaped setting reduces the strength of the rotor laminations and increases the harmonic content of the rotor laminations. At the same time, the magnetic tile slots on the rotor laminations are relatively large, which is not conducive to heat dissipation. Therefore, we propose a radial rotor lamination structure to solve the above problems. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the prior art, that is, the rotor slot opening reduces the strength of the rotor punching, increases the harmonic content of the rotor punching, and the magnetic tile grooves on the rotor punching are relatively large, which is not conducive to heat dissipation, and proposes a radial rotor punching structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A radial rotor punching structure includes a circular substrate, a center hole is provided in the middle of the substrate, and a plurality of closed slot structures are evenly distributed around the center of the substrate, the slot structure includes rotor slots and ventilation holes, the rotor slots and the ventilation holes are connected, and a second magnetic isolation bridge is formed between the rotor slots and the edge of the substrate, and a first magnetic isolation bridge is formed between two adjacent ventilation holes.

[0006] As a preferred technical solution of the utility model, a plurality of load-reducing holes are provided on the substrate.

[0007] As a preferred technical solution of the utility model, the height of the rotor slot is smaller than the height of the ventilation hole, and the ratio of the rotor slot height to the ventilation hole slot height is 0.9:1 to 1:1.5. By increasing the height of the ventilation hole, the rotor can dissipate heat more easily.

[0008] As a preferred technical solution of the utility model, the inner walls on both sides of the connection between the rotor slot and the ventilation hole are bulged toward the middle to form a convex edge.

[0009] The beneficial effects of the utility model are:

[0010] 1. The rotor adopts a closed slot design to increase the rotor strength and enable the motor to run at a higher speed. At the same time, the closed slot can reduce the rotor harmonic content.

[0011] 2. By increasing the height of the ventilation holes, the ratio of the rotor slot height to the ventilation hole slot height reaches 0.9:1 to 1:1.5, making it easier for the rotor to dissipate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a radial rotor punching structure proposed by the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle.

[0014] In the figure: 1, substrate; 2, center hole; 3, slotted structure; 31, rotor slot; 32, ventilation hole; 33, first magnetic isolation bridge; 34, second magnetic isolation bridge; 35, convex edge. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] Reference Figure 1-2 A radial rotor punching structure includes a circular substrate 1, a central hole 2 is provided in the middle of the substrate 1, and a plurality of load-reducing holes are opened on the substrate 1. At the same time, a plurality of closed slot structures 3 are evenly distributed around the center of the substrate 1;

[0017] The number of slotted structures 3 is 8, and the slotted structure 3 includes a rotor slot 31 and a ventilation hole 32. The rotor slot 31 and the ventilation hole 32 are connected, and the inner walls on both sides of the connection between the rotor slot 31 and the ventilation hole 32 are raised toward the middle to form a convex edge 35, and a second magnetic isolation bridge 34 is formed between the rotor slot 31 and the edge of the substrate 1, and a first magnetic isolation bridge 33 is formed between two adjacent ventilation holes 32.

[0018] It should be noted that the height of the rotor slot 31 is smaller than the height of the ventilation hole 32, and the ratio of the height of the rotor slot 31 to the height of the ventilation hole 32 is 0.9:1 to 1:1.5. By increasing the height of the ventilation hole 32, it is easier for the rotor to dissipate heat.

[0019] In this embodiment: the slot structure 3 adopts a closed slot design to increase the strength of the rotor body, so that the motor can reach a higher speed. At the same time, the closed slot can reduce the rotor harmonic content;

[0020] By increasing the height of the ventilation holes 32, the ratio of the height of the rotor slots 31 to the height of the ventilation hole slots 32 is made to reach 0.9:1 to 1:1.5, thereby making it easier for the rotor to dissipate heat.

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A radial rotor punching structure, comprising a circular base sheet (1), a central hole (2) being arranged in the middle of the base sheet (1), and a plurality of closed slot structures (3) being evenly distributed around the center of the base sheet (1), characterized in that: The slotted structure (3) comprises a rotor slot (31) and a ventilation hole (32); the rotor slot (31) and the ventilation hole (32) are connected, a second magnetic isolation bridge (34) is formed between the rotor slot (31) and the edge of the substrate (1), and a first magnetic isolation bridge (33) is formed between two adjacent ventilation holes (32).

2. A radial rotor punching structure according to claim 1, characterized in that: The substrate (1) is provided with a plurality of load-reducing holes.

3. The radial rotor punching structure according to claim 1, characterized in that: The height of the rotor slot (31) is smaller than the height of the ventilation hole (32), and the ratio of the height of the rotor slot (31) to the height of the ventilation hole (32) is 0.9:1 to 1:1.

5.

4. A radial rotor punching structure according to claim 3, characterized in that: The inner walls on both sides of the connection between the rotor slot (31) and the ventilation hole (32) are both raised toward the middle to form a convex edge (35).

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