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Stator punched sheet, stator assembly and external rotor motor

A stator punching and punching technology, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of high magnetic density of stator teeth, inconvenient winding and arranging, affecting motor performance and efficiency, etc.

Active Publication Date: 2017-07-07
ZHONGSHAN BROAD OCEAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this structure is simple and convenient for mold making, it is inconvenient for winding and arranging wires, and the end of the winding is long and high, resulting in a large consumption of motor materials and high cost.
Moreover, since the wire grooves are all located on the outside, the teeth are narrower, resulting in a higher magnetic density of the stator teeth, which affects the performance and efficiency of the motor

Method used

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  • Stator punched sheet, stator assembly and external rotor motor
  • Stator punched sheet, stator assembly and external rotor motor
  • Stator punched sheet, stator assembly and external rotor motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: if figure 1 As shown, the present embodiment is a stator punching plate, including a punching body 1 with a central hole, and the punching body 1 includes an annular yoke 10 and several protruding from the outer edge of the annular yoke 10 Teeth, the punching body 1 is provided with a first groove group 2 and a second groove group 3, the depth of the first groove group 2 along the radial direction of the punching body 1 is deeper than that of the second groove group 3 The depth along the radial direction of the punching body 1, the first groove group 2 and the second groove group 3 are provided with a plurality, and the first groove group 2 and the second groove group 3 are arranged alternately in the circumferential direction on the outer edge of the punching body 1, and the first groove group 2 includes a first common wire-ruling groove 21 in the middle and a second common wire-ruling groove 21 located on both sides of the first common wire-ruling groo...

Embodiment 2

[0031] Embodiment two: if figure 1 , figure 2 and image 3As shown, this embodiment is a stator assembly, the stator assembly includes a stator core, end insulation, a first working winding 4 and a second working winding 5, and the end insulation is installed on the end face of the stator core, so The stator core is formed by laminating several stator punches 1 as described in Embodiment 1, the first working winding 4 is wound in the first slot group 2, and the second working winding 5 is wound in the second slot group 3 , the first working winding 4 includes multiple sets of first working coils 41 spaced along the circumferential direction, multiple sets of first working coils 41 are connected together in turn, and the second working winding 5 comprises multiple sets of coils distributed along the circumferential space The second working coil 51, multiple groups of second working coils 51 are connected together in turn, the first working coil 41 and the second working coil...

Embodiment 3

[0032] Embodiment three: as Figure 1 to Figure 5 As shown, this embodiment is an external rotor motor, including a rotating shaft 6, a plastic-encapsulated stator 7 and an outer rotor 8, the outer rotor 8 is sleeved outside the plastic-enclosed stator 7, and the rotating shaft 6 is installed in the middle of the plastic-enclosed stator 7 and connected to the outer rotor 8 Together, the plastic-encapsulated stator 7 includes a stator core 71, an end insulation 72, a coil winding 73 and a plastic enclosure 74, the end insulation 72 is installed on the end face of the stator core 71, and the coil winding 73 is wound on the end insulation 72, the plastic package 74 connects the stator core 71, the end insulation 72 and the coil winding 73 into one body. The stator core 71 is formed by laminating a number of stator punches 1 as described in Embodiment 1. The structure of the stator punching plate will not be described in detail here.

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PUM

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Abstract

The present invention discloses a stator punches sheet, a stator assembly and an external rotor motor. The stator punched sheet comprises a punched sheet body with a center hole; the punched sheet body includes an annular yoke portion and a plurality of teeth which protrude out from the outer edge of the annular yoke portion and extend outwards; a plurality of first groove sets and a plurality of second groove sets are formed in the punched sheet body; the first groove sets and the second groove sets which are distributed alternately and circumferentially are formed in the outer edge o the punched sheet body; the depth of first groove sets along the radial direction of the punched sheet body is larger than the depth of the second groove sets along the radial direction of the punched sheet body; the first groove set includes a first common wire embedding slot in the middle as well as a first left wire embedding slot and a first right wire embedding slot which are located at two sides of the first common wire embedding slot; and the second groove set includes a second common wire embedding slot in the middle as well as a second left wire embedding slot and a second right wire embedding slot which are located at two sides of the second common wire embedding slot. With the stator punches sheet adopted, motor performance can be performed.

Description

[0001] Technical field: [0002] The invention relates to a stator punch, a stator assembly and an outer rotor motor, belonging to the technical field of motors. [0003] Background technique: [0004] Current motors, such as plastic-sealed external rotor motors, include a plastic-sealed stator and a motor rotor. The plastic-encapsulated stator includes a stator core formed by laminating several stator punches, and a main coil winding and an auxiliary coil winding wound on the stator core. [0005] The conventional structure of the model of the stator stamping in the prior art is that each embedding slot has the same size and shape and is evenly distributed on the outside of the circumference. Although this structure is simple and convenient for mold making, it is inconvenient for winding and arranging wires, and the ends of the windings are long and high, resulting in a large consumption of motor materials and high costs. Moreover, since the wire slots are all located on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16
CPCH02K1/16H02K1/165H02K3/12
Inventor 付桂文王雄程朱金成邓双朝叶玉明季晨
Owner ZHONGSHAN BROAD OCEAN