Combined permanent-magnet direct insertion type motor rotor with fixed plates
A technology of motor rotor and fixed plate, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problem of electromagnetic performance decline, and achieve the effect of reducing magnetic flux leakage, enhancing electromagnetic performance, and simple structure
Inactive Publication Date: 2012-05-16
HANGZHOU ZHONGSHANG ENERGY TECH
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Problems solved by technology
However, the fixing method of these permanent magnets has always been a difficult problem for in-line permanent magnet rotors. The common structure directly adopts the opening of silicon steel sheets. To ensure that the permanent magnets are reliably fixed and protected, the electromagnetic performance is often caused by magnetic flux leakage. Decline
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Embodiment
[0017] Embodiment: the combined permanent magnet in-line motor rotor with fixed piece of this example, such as figure 1 , figure 2 , image 3 , there are some fixed plates 1, and the fixed plates are made of iron. It is characterized in that an iron core piece 2 is arranged between the two adjacent fixed pieces, such as Figure 5 , The iron core sheet is fan-shaped, and the iron core sheet is made of silicon steel sheet laminations with a certain thickness. Such as Figure 4 , the middle part of the fixed piece is provided with a fixed piece shaft hole 3, the shaft hole is pierced with a shaft body 4, the fixed piece shaft hole, the fixed piece around the iron core piece shaft hole, and the iron core piece are also provided with fastening holes 5, fastening A fixed rod 6 is pierced through the hole, and the outer edge of the fixed piece is evenly distributed with 4 radially distributed grooves 7, and the 4 grooves are arranged in a cross shape, and a gap 8 is provided bet...
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The invention relates to the field of motor design and manufacture, in particular to a combined permanent-magnet direct insertion type motor rotor with fixed plates. The motor rotor mainly aims to solve the technical problems that the motor rotor in prior art directly adopts a structure with openings on a silicon steel sheet, and consequently, in order to ensure permanent magnets to be fixed and protected reliably, the electromagnetic property is reduced for leakage flux frequently, and the like. The motor rotor of the invention comprises a plurality of fixed plates, wherein iron core plates are arranged between the adjacent two fixed plates; the iron core plates are fan-shaped; fixed plate shaft holes are positioned in the middle of the fixed plates respectively; shaft bodies are positioned in the shaft holes; fastening holes are further arranged on the fixed plates and the iron core plates uniformly at peripheries of the fixed plate shaft holes and the iron core shaft holes; fixed rods are positioned in the fastening holes; more than two grooves or holes distributed radially are arranged at the outer edges of the fixed plates; spaces are positioned between the adjacent iron core plates; width of the spaces is greater than or equal to the width of the grooves or the holes; and the permanent magnets are positioned in the grooves or the holes of the fixed plates.
Description
technical field [0001] The invention relates to the field of motor design and manufacture, in particular to a combined permanent magnet in-line motor rotor with a fixed piece. Background technique [0002] Permanent magnet motors have the advantages of high efficiency and high power density, and have recently received more and more attention. Among them, the in-line permanent magnet rotor can achieve magnetic concentration and has the characteristics of simple permanent magnet shape. A Chinese patent discloses an improved permanent magnet motor rotor (authorized announcement number: CN202004552U), which includes a rotor core, a tile-type permanent magnet, a built-in permanent magnet, and a rotating shaft, and a "V"-shaped groove is opened in the rotor core , the tile-type permanent magnet is pasted on the surface of the rotor core, and the built-in permanent magnet is inserted in the "V" groove in the rotor core; the polarity of the corresponding surface of the tile-type pe...
Claims
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IPC IPC(8): H02K1/27H02K1/28
Inventor 王灿飞沈建新金孟加
Owner HANGZHOU ZHONGSHANG ENERGY TECH