CN2384360Y

CN2384360Y - Permanent magnet rotor for electric generator of automobile

Info

Publication number: CN2384360Y
Application number: CN 98244689
Authority: CN
Inventors: 魏锡奎; 朱世兴
Original assignee: XIANYOU MINDIAN MOTOR FACTORY FUJIAN
Current assignee: XIANYOU MINDIAN MOTOR FACTORY FUJIAN
Priority date: 1998-09-29
Filing date: 1998-09-29
Publication date: 2000-06-21
Anticipated expiration: 2008-09-29

Abstract

The utility model discloses a permanent magnet rotor for electric generators of automobiles. The periphery of the main shaft of the rotor is sheathed with a non-magnetic conducted core body, and between a front jaw electrode and a back jaw electrode of the non-magnetic conducted core body, one or more permanent magnet rings are orderly arranged in series. The front jaw electrode and the back jaw electrode are connected and fixed with the non-magnetic conducted core body by bonds or pin posts with non-magnetic conducted materials, and the distributions of the magnetic pole of the front jaw electrode and the back jaw electrode are mutually corresponding and mutually staggered, forming an orderly arrangement with the magnetic electrode like N-S-N-S-N-S-N-S-N-S-N-S-. The permanent magnet rotor has the advantages of simple structure, easy assembly, good ventilating radiating property, high utilization rate of remanence, and stable generating performance of the whole machine.

Description

A kind of p-m rotor of automobile current generator

The utility model relates to a kind of improvement of automobile current generator, on the alternating current generator and motor of this p-m rotor applicable to automobile, tractor.

Now, permanent magnetic generator for vehicle and common permanent magnet motor are causing people's attention step by step, and relevant technical scheme constantly occurs and be mentioned to improved way, we also once proposed a technology for this reason, see Chinese patent CN 2271063Y number for details about " a kind of rotor of permanent magnetic generator for vehicle ", it is even by even number root strip permanent magnet, arrange in an orderly manner, they and the utmost point are slapped, magnetic conductor is the dovetail groove that cooperates with tolerance clearance, dovetail flange or be connected and fixed with the non-magnetic conduction screw of stealth, and form the ventilation slot of alternate even number of poles of the uniform NS of being arranged as and similar number, the core body of the non-magnetic conduction of perfusion is connected and locatees between magnetic conductor and the main shaft, and two ends of rotor is equipped with idioelectric guiding fan blade and air inducing fan blade respectively.But this structure is processed, assembly difficulty is bigger.

Task of the present utility model is the automobile current generator p-m rotor that a kind of unique texture will be provided, the processing of this rotor and assemble easyly, and power generation performance is good, and the ventilation and heat condition is better.

Task of the present utility model is to finish in such a way, one group of permanent magnet circle ring is set in the rotor of this automobile current generator, it is one of serial connection or the orderly permanent magnet circle ring of polylith arrangement between the non-magnetic conductive core of main shaft periphery and the forward and backward pawl utmost point, to substitute the field winding of common generator, and make 12 utmost point pawl magnetic alignment of the forward and backward pawl utmost point orderly, interlaced and even distribution, their magnetic pole distribution sequence is: N-S-N-S-N-S-N-S-N-S-N-S-.The permanent magnet rotor structure of this automobile current generator is simple, and assembling is easy, few easy workout part, remanent magnetism utilance height.

Below in conjunction with accompanying drawing the utility model is further elaborated.

Fig. 1 is a p-m rotor master cutaway view of the present utility model.

Fig. 2 is a p-m rotor left view of the present utility model.

From figure, can find out significantly, the outer race of the rotor main shaft of this automobile current generator (1) a non-magnetic conductive core (2), one of serial connection or polylith are arranged orderly permanent magnet circle ring (5) between the fore paw utmost point (3) outside non-magnetic conductive core (2) and the rear solid end utmost point (4), can adopt the baking cover between non-magnetic conductive core (2) and the main shaft (1), the annular knurl crimping is fixed, also available non-magnetizer material welding is fixing, also can adopt the key of non-magnet material to be connected and fixed, and the fore paw utmost point (3), be key or pin with non-magnet material is connected and fixed between the rear solid end utmost point (4) and the non-magnetic conductive core (2), the nut (6) that compresses the location also is non-magnetic conduction.Like this, the magnetic field of permanent magnet circle ring (5) makes the fore paw utmost point (3), the rear solid end utmost point (4) is gone up each utmost point pawl and is produced interlaced, corresponding mutually magnetic pole, the distribution of pole arrangement on these 12 utmost point pawls is even, orderly as can be seen from Figure, and they put in order and are N-S-N-S-N-S-N-S-N-S-N-S-.The permanent magnet rotor structure of this automobile current generator rationally, simple, processing, assembling are than being easier to, the ventilation and heat performance is good, the remanent magnetism utilance height of permanent magnet circle ring (5), the complete machine power generation performance is stablized.

Claims

1. automobile current generator p-m rotor of being formed by main shaft (1), the fore paw utmost point (3), the rear solid end utmost point (4), it is characterized in that: a non-magnetic conductive core (2) in the outer race of rotor main shaft (1), one of serial connection or polylith are arranged orderly permanent magnet circle ring (5) between the fore paw utmost point (3) outside non-magnetic conductive core (2) and the rear solid end utmost point (4).

2. press the automobile current generator p-m rotor of claim 1 defined, it is characterized in that: the fore paw utmost point (3), the rear solid end utmost point (4) and non-magnetic conductive core (2) are that key or the pin with non-magnet material is connected and fixed, induced field polarity distribution on 12 utmost point pawls in the fore paw utmost point (3) and the rear solid end utmost point (4) generation is a mutual correspondence, interlaced, forms the orderly arrangement of N-S-N-S-N-S-N-S-N-S-N-S-magnetic pole.