Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotor core for brushless direct-current machine

A technology for brushing DC motors and rotor cores, which is applied to electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problems of difficulty in inserting magnets 21 and narrowing of the width of magnet slots 14, etc., and achieves easy insertion process and insertion process. Complete, easy-to-insert effects

Inactive Publication Date: 2007-05-09
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for the rotor core 10 of the existing brushless DC motor with the above structure, when the rivet hole 16 is formed after the magnet hole 14 is formed, the area between the magnet groove 14 and the rivet hole 16 will protrude and deform outwardly along the radial direction, As a result, the width of the magnet slot 14 becomes smaller, making it difficult to insert the magnet 21.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotor core for brushless direct-current machine
  • Rotor core for brushless direct-current machine
  • Rotor core for brushless direct-current machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The specific structure, features and functions according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] Referring to Fig. 4 to Fig. 6, the preferred embodiment of the rotor core of the brushless DC motor of the present invention includes: a rotor core 10 formed by insulating and laminating several disc-shaped steel plates 11, adjacent to the outer periphery of the rotor core 10 A plurality of magnets 21 that are inserted and combined, a rotating shaft 31 integrally connected with the axis of the rotor core 10, and a shaft hole 12 that penetrates the central part for inserting the rotating shaft 31, and penetrates for inserting the magnets 21 into the outer peripheral surface The magnet groove 14, the rivet hole 16 formed between the shaft hole 12 and the magnet groove 14 for inserting the rivet 23, and the extension part 18 formed by cutting the edge portion adjacent to the magn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The rotor core of motor comprises following parts. A rotor core is piled up from several disk- shaped insulated steel plate. Several magnets are distributed and accommodated in equal interval along circumferencial direction adjacent to cirumferential of the rotor core. The rotation axis is integrated with axle of the rotor core. Axle hole for the rotation axis to insert, magnet slots for accommodating magnet, and perforated rivet hole distributed at inner side of magnet slots are located at the center of the rotor core. Fringe part adjacent to rivet hole and magnet slots possesses secant sections with their amplitude being bigger towards center. The rotor core of motor is easy for magnet to insert.

Description

technical field [0001] The invention relates to a rotor core in a motor in the electric field, in particular to a rotor core of a brushless direct current motor which makes the magnet installation process easier. Background technique [0002] Generally speaking, a brushless DC (Blushless DC) motor includes: a rotor that forms a magnetic field and transmits torque to the outside, an amateur coil that generates torque based on the interaction with the magnetic field, and a magnetic circuit that forms a magnetic circuit while adjusting the amateur coil. The stator core, the position sensing element that can detect the exact position of the rotor. [0003] FIG. 1 is a schematic perspective view of a conventional brushless DC motor rotor. FIG. 2 is a cross-sectional view of the rotor in FIG. 1 . And FIG. 3 is a schematic end view of the rotor core in FIG. 2 . As shown in the above drawings, the rotor includes: a rotor core 10 formed by insulating and laminating several disc-sh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K29/00
Inventor 李元永
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD