Commutator segment halved rotor and motor thereof

Abstract

The invention discloses a commutator segment halved rotor comprising a rotating shaft, an iron core, a commutator and coil windings wound by enamel wires, wherein each commutator segment in the commutator is provided with a hook; the coil windings are wound on the iron core; the quantity of the commutator segments is half of that of the coil windings; and after being wound into two coil windings, the enamel wires are electrically connected at one hook. The invention further provides a motor comprising a stator, a motor shell with a built-in end cover, a carbon brush component and the commutator segment halved rotor. The invention has the following beneficial effects: the quality problem and hidden troubles of inter-turn short circuit are eliminated, commitator spot welding can be performed conveniently; during a wiring process, the hooking frequency is less than traditional rotor wiring, and the rotor wiring efficiency is improved; the commutator spot welding frequency is reduced; the spot welding frequency is improved; the spot welding failure rate is reduced; the output power and efficiency of the motor are improved by 2-4%; or under the condition of achieving the original output power, the wire diameters of the enamel wires can properly reduced, so that the copper weight is reduced.

Description

technical field [0001] The invention relates to a brushed DC motor. Background technique [0002] Traditional brushed DC motor rotor, its working principle see figure 1 : The number of hooks 3 and its commutator pieces (copper bars) on the commutator is equal to the number of slots on the iron core 2 and coil winding 1. When the rotor winds coil winding 1, each coil winding 1 is wound in the commutator Hang a hook once on the hook 3. For example: the commutator rotor with 20 slots of iron core 2 and 20 hooks 3 winds the coil winding 1, when the winding method is single fly: when the winding starts, the initial end of the coil is hung with a hook (called the initial hook , the hook can be selected arbitrarily), then wind a coil, hang the hook again after completion, repeat the above action, after winding 20 coils winding 1, the end end of the coil returns to the starting hook 3, that is, 20 The coil windings are connected end to end, and the starting hook 3 and the ending ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: ①When the outer diameter of the commutator (copper bar outer diameter) is small and the number of hooks is large, the distance between the wire and the wire of the winding coil at the hook is very close, and there is a quality problem of inter-turn short circuit. Especially prominent when thicker and at the start of the hook

In the production of this type of rotor, this quality problem accounts for about 5%, and the thread needs to be picked up and repaired with a needle, but there are still quality problems

②The width of the hook is narrow, which is not conducive to spot welding

③When the rotor is winding, the number of hooks needs to be more, for example: 20-slot iron core 20 hook commutator rotor double-fly winding needs to be hung 11 times at the same time, single-fly needs to be hung 21 times, when winding on a semi-automatic winding machine , the need for manual hooking, the problem becomes prominent

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