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Series-excited motor with internal load

An internal load, series excitation technology, applied in the direction of reduction gear parts, electromechanical devices, casings/covers/supports, etc., can solve the problems of high speed and loud noise of series excitation motor 10

Inactive Publication Date: 2004-04-28
YUDONG PLASMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the torque of the series-excited motor 10 has a linear relationship with the rotational speed of the series-excited motor 10, so when the external load is small, the rotational speed of the series-excited motor 10 will be greatly increased, and at the same time make loud noise

Method used

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  • Series-excited motor with internal load
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  • Series-excited motor with internal load

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Embodiment Construction

[0025] Referring to FIG. 3 , FIG. 3 is a component diagram of the series-excited motor 100 of the present invention. The series excited motor 100 includes: a stator 120 , a rotor 130 , end brackets 150 , 170 , a resistance plate set 140 and an elastic element set 180 . The rotor 130 includes: a bearing 132 , a commutator 134 disposed on the bearing 132 , and a rotor core 136 adjacent to the commutator 134 . The rotor core 136 is wound with copper wire to form a plurality of winding groups 138 . Each winding set 138 is electrically connected to the corresponding conductive surface 135 on the commutator 134 . The terminals 132a and 132b on the bearing 132 are rotatably fixed on the insulating sleeves 152, 172 of the terminal brackets 150, 170, respectively. The end brackets 150 , 170 are firmly connected to the stator 120 through screws 110 . Rotor core 136 rotates within stator 120 , and commutator 134 and rotor core 136 also rotate within end bracket 150 . The bearing 132 ...

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Abstract

A series-excited motor with internal load is composed of a stator, a rotor, several brushes and a load unit. Said rotor consists of a bearing, a commutator on bearing, and a rotor core close to said commutator and on bearing. Said rotor core is electrically connected with said commutator and is arranged in the stotor in rotary mode. When external load is very low, its internal load can prevent overrun of rotator.

Description

technical field [0001] The present invention relates to a series-excited motor provided with an internal load, which does not over-rotate even when the external load is small. Background technique [0002] The series motor is a kind of electric motor. Since it can operate on both AC and DC voltages, it is very common in the market, such as a cordless powered screwdriver or a stirrer. Series excited motors are also very common in industrial applications because of their simple structure and a certain degree of reliability. [0003] Referring to FIG. 1 , FIG. 1 is a component diagram of a conventional series-excited motor 10 . The series excited motor 10 includes: a stator 20 , a rotor 30 and end brackets 50 , 70 . The rotor 30 includes: a bearing 32 , a commutator 34 and a rotor core 36 , which are all arranged on the bearing 32 . The rotor core 36 is wound with copper wire to form a number of different winding groups 38 . Each winding set 38 is electrically connected to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/14H02K5/15H02K5/167H02K5/173H02P3/04
CPCH02K5/148H02K5/15H02K5/1732H02P3/04H02K5/1672
Inventor 廖本六
Owner YUDONG PLASMA TECH