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Slotless permanent magnet brushless motor structure

A permanent magnet brushless motor and motor housing technology, which is applied in the shape/style/structure of the magnetic circuit, the static parts of the magnetic circuit, and the rotating parts of the magnetic circuit, etc. Problems such as low production efficiency, to achieve the effect of reducing production difficulty, improving production efficiency, and simple winding

Inactive Publication Date: 2012-07-18
葛建勇
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional slotless motor structure is mainly based on the coreless motor structure. Because it does not contain a wound iron core, the magnetic flux leakage is serious, the air gap magnetic field strength is strongly attenuated inside the stator coil, and the magnet utilization rate is not high, so it is not suitable for large size. High-power motor; and its winding process is quite complicated, the production efficiency is extremely low, and the tooling equipment is very demanding, so the production difficulty and cost are high

Method used

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  • Slotless permanent magnet brushless motor structure
  • Slotless permanent magnet brushless motor structure
  • Slotless permanent magnet brushless motor structure

Examples

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Embodiment

[0015] Example: such as figure 1 As shown, the three-phase motor is composed of a motor casing, a magnetically permeable ring, a wound stator, a permanent magnet rotor, silicon steel laminations and a rotating shaft from the outside to the inside. Such as figure 2 with image 3 Each wound stator shown in the figure is composed of two semicircular stator skeletons with ring windings, which can be injection molded with high temperature resistant plastic molds. The molded stator skeleton is a semicircular structure with an inner cavity, and the outer winding is wound on top of the ring. Wire. The two stator skeletons face each other to form a complete circle of a cavity. The permanent magnet rotor is wrapped in the inner cavity of the wound stator. There is a gap between the permanent magnet rotor and the stator coil, and the permanent magnet rotor can rotate in the cavity. The winding structure of the stator coil also includes a racetrack winding coil. There is a gap at the...

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Abstract

The invention relates to a brushless motor structure, specifically to a slotless permanent magnet brushless motor structure, which consists of a motor housing, a magnetic ring, a winding stator, a permanent magnet rotor, a silicon steel stack and a rotary shaft from outside to inside respectively. Each stator coil consists of two semicircular stator frameworks with circular windings, the frame is provided with a hollow cavity in the middle, and the permanent magnet rotor is wrapped in a hollow cavity of the stator coil and rotates in the hollow cavity. Or, the stator coil is a hollow cavity coil formed by coiling the windings and being formed by high temperature glue. After the two hollow cavity coils are combined, the permanent magnet rotor is installed in the hollow cavity and a gap is left between the permanent magnet rotor and the stator coil and the permanent magnet rotor can rotate within the hollow cavity. The slotless permanent magnet brushless motor structure creatively applies the structure which generates torque by the action of the inner magnetic field of the stator and the rotor, and the utilization ratio of magnetic energy is much higher than that of the conventional motor structure.

Description

technical field [0001] The invention relates to a brushless motor structure, in particular to a slotless permanent magnet brushless motor structure. Background technique [0002] The traditional slotless motor structure is mainly based on the coreless motor structure. Because it does not contain a wound iron core, the magnetic flux leakage is serious, the air gap magnetic field strength is strongly attenuated inside the stator coil, and the magnet utilization rate is not high, so it is not suitable for large size. High-power motor; and its winding process is quite complicated, the production efficiency is extremely low, and the tooling equipment is very demanding, so the production difficulty and cost are high. Contents of the invention [0003] Aiming at the above problems, the present invention designs a slotless permanent magnet motor with simple technology and structure, and is suitable for manufacturing large and medium-sized motors. [0004] The design scheme of the...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K1/12
Inventor 葛建勇
Owner 葛建勇
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