Slim type stator, slim type motor having the stator and direct drive apparatus for drum-washing machine

Abstract

Provided is a slim type stator that is used to make a BLDC (Brushless Direct-Current) motor having a stator of a division core structure and a double rotor for use in a drum-washing machine, a slim type motor having the same, and a direct drive apparatus for use in the drum-washing machine. The stator includes: an annular division stator core assembly that is assembled in an annular form by winding a three-phase coil on a number of bobbins that are molded on respective outer circumferences of a number of division cores to thus surround a middle portion of each bobbin wherein each bobbin includes first and second flanges formed at one side of the bobbin and the other side thereof, respectively, and a coupling protrusion and a coupling groove that are formed at both side ends of the first flange that is disposed inward, and wherein the coupling protrusion and the coupling groove are mutually coupled between adjoining division stator bobbins; and a stator holder that molds the division stator core assembly that is formed in an annular form by winding the coils on the bobbins by an insert molding that uses a thermosetting resin, excepting inner and outer side surfaces of each division core of the division stator core assembly.

Description

technical field [0001] The invention relates to an ultra-thin stator and a motor, in particular to a BLDC motor with a split core structure and a double-rotor BLDC motor, which is intended to be manufactured into an ultra-thin stator and a motor for a small and medium-sized built-in drum washing machine. The manufacturing method thereof utilizes the ultra-thin motor of the stator and the direct drive device of the drum washing machine. Background technique [0002] Generally speaking, the drum washing method adopts the state of putting detergent, washing water and laundry into the drum, and uses the friction force between the drum driven by the motor to rotate and the laundry to complete the washing, which hardly damages the laundry. No entanglement, can obtain the washing effect of patting and scrubbing. [0003] Existing front-loading washing machines are classified according to their driving methods: indirect connection, in which the driving force of the motor is indirec...

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Problems solved by technology

[0042] In addition, in the motor disclosed in the above-mentioned patent, the coils wound on a plurality of split cores are connected in the lower space of the stator, and the terminal unit for supplying power to the motor coil protrudes from the stator support body in the thickness direction, and is used for connecting with the machine of the washing machine. The inner extension of the stator support body combined with the shell (eg, washing tank) does not have a slim structure, so it cannot be used as a direct-drive slim motor for a built-in front-loading washing machine

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