CN2315711Y

CN2315711Y - Permanent magnetic AC generator

Info

Publication number: CN2315711Y
Application number: CN 97233322
Authority: CN
Inventors: 吴春江
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-12
Filing date: 1997-06-12
Publication date: 1999-04-21
Anticipated expiration: 2007-06-12

Abstract

The utility model relates to a permanent magnetic AC generator whose rotor is a permanent magnet. The utility model is suitable to be used as a lighting power supply for small tractors, automotive tricycles, and four wheel vehicles for agricultural use. The shapes and the connection relationships of the rotary shaft, the rotor, the casing, and the iron core of the utility model are full identical to the shapes and the connection relationships of the rotary shaft, the rotor, the casing, and the iron core of conventional permanent magnetic AC generators. The utility model is characterized in that windings are divided into three groups, and the three groups are connected in parallel on a lead end. The utility model has strong load ability and can satisfy the need of lighting when a vehicle runs with a low speed, and bulbs can not be burnt when the vehicle runs with a high speed.

Description

Magneto alternator

Magneto alternator relates to the alternating current generator that rotor is a permanent magnet, is applicable to the mains lighting supply of baby tractor, motor tricycle and four-wheel agricultural vehicle.

Mains lighting supply on baby tractor, motor tricycle and the four-wheel agricultural vehicle all is to adopt magneto alternator, and the rotating shaft of this generator is connected with actuating unit on the car by belt pulley, generates electricity when car travels and throws light on.Its weak point is the load-carrying ability of generator, output voltage height great disparity, and illuminating lamp does not work when causing the car low speed driving, when overall height speed is travelled, often burns out lighting bulb again.In order to solve above-mentioned deficiency, the lighting device that must make car that installs additional of loading onto pressurizer, pressurizer that adds that has becomes complicated, has increased cost on the one hand, will expend the part electric energy on the other hand.

The purpose of this utility model is that a kind of carrying load ability of design is strong, speed of a motor vehicle low energy satisfies the illumination needs, and speed of a motor vehicle height does not burn out the magneto alternator of bulb.

This magneto alternator comprises rotating shaft, socket is fixed with permanent magnet rotor in the rotating shaft, be with casing outside the permanent magnet rotor, be fixed with iron core on the round inwall of casing, be wound with coil on the salient pole of iron core, the two ends of casing are connected to left and right sides end cap, and left and right sides end cap is contained in the rotating shaft by bearing holder (housing, cover), its design feature is that coil is divided into three groups, and these three groups of coils are connected in parallel at exit.

Because the coil of this magneto alternator is changed into three windings that are connected in parallel by a traditional winding, during work, three groups of induced voltages that the rotating magnetic field that the rotation of permanent magnet rotor produces is produced in three coil windings, in the output parallel connection, power output is big, after connecing the illuminating lamp load, sufficient electric current supply is arranged, can not cause voltage to descend, promptly load-carrying ability is strong, during car low speed, illuminating lamp is still very bright, satisfy the illumination needs, during overall height speed, because the number of turn of every group of coil is much smaller than the number of turn of former single coil, thereby output voltage can be too not high, within the scope of rated output voltage, can not burn out bulb.Use this magneto alternator, do not need to install additional pressurizer, the cost of the lighting device of car is reduced.

Accompanying drawing shows the embodiment of magneto alternator, and wherein Fig. 1 is the structural representation of embodiment, and Fig. 2 is the schematic diagram of embodiment, and Fig. 3 is the A-A cutaway view of Fig. 1.

In the present embodiment, magneto alternator comprises rotating shaft I, be socketed with permanent magnet rotor 2 in the rotating shaft 1, be with casing 3 outside the permanent magnet rotor 2, be fixed with the iron core 4 of 12 salient poles 9 on the round inwall of casing 3, be wound with coil 5 on the salient pole 9 of iron core 4, coil 5 is divided into Ax, By, three groups of Cz, the line footpath and the number of turn of three groups of coils 5 are identical, every group of enamelled wire with line footpath 0.77mm be around 60 circles, and this three groups of coils 5 are connected in parallel at exit, and the two ends of casing 3 are connected to left and right sides end cap 6, left and right sides end cap 6 is sleeved in the rotating shaft 1 by bearing 7, is fixed with bolt 8 between two left and right sides end caps 6.

Claims

1, a kind of magneto alternator, comprise rotating shaft (1), rotating shaft (1) is gone up socket and is fixed with permanent magnet rotor (2), be with casing (3) outside the permanent magnet rotor (2), be fixed with iron core (4) on the round inwall of casing (3), be wound with coil (5) on the salient pole (9) of iron core (4), the two ends of casing (3) are connected to left and right sides end cap (6), left and right sides end cap (6) is sleeved in the rotating shaft (1) by bearing (7), it is characterized in that coil (5) is divided into three groups, and these three groups of coils (5) are connected in parallel at exit.

2,, it is characterized in that the line footpath and the number of turn of three groups of pitch of the laps (5) is identical according to the said magneto alternator of claim 1.