CN2518258Y

CN2518258Y - Collar type winding internal-external rotor slotless electric machines

Info

Publication number: CN2518258Y
Application number: CN 01280306
Authority: CN
Inventors: 张福兴
Original assignee: JIANGXI XITAI ELECTRICAL MACHINE CO Ltd
Current assignee: JIANGXI XITAI ELECTRICAL MACHINE CO Ltd
Priority date: 2001-12-25
Filing date: 2001-12-25
Publication date: 2002-10-23
Anticipated expiration: 2011-12-25

Abstract

The utility model relates to a collar winding inside and outside a rotor non-slot motor, and resolves the problems of inadequateness of low-speed torque, inefficiency, unstable operation, etc. The utility model is characterized in that an iron core is provided with a non-slot structure, a winding collar is arranged around the iron core, inner and outer circles correspond respectively to inner and outer alnicos and inner and outer magnetic yokes, and together form a complete set of electromagnetic induction loop. The inner and the outer alnicos, the magnetic yokes and the rotating shaft are connected through bolts to form rotors. The iron core and an upper bearing seat form stators through a positioning plate and a positioning seat handle. The utility model has the advantages of big ratio of power and volume, wide range of speed, good low-speed performance, etc.

Description

Electric machine with ring windings on internal and external rotors without slots

Technical field: the technical scheme that the utility model is claimed belongs to machine field.

Background technology: conventional motors, as brushless electric machine, its winding coil is the fusiformis structure, invalid binding limit, winding coil two ends is two hypotenuses to be formed, roomy in the coil, causes the all-in resistance of the winding coil on traditional brushless electric machine to reduce.Thereby affect motor properties ubiquity low speed torque deficiency greatly, efficient is low, phenomenons such as fluctuation of service.

Summary of the invention: the purpose of this utility model is exactly at the deficiencies in the prior art, provides a kind of low-speed performance good, the New-type electric machine that efficient is high.Changing traditional slotted core is that the direct lasso of slotless iron core winding coil is on iron core, its inside and outside circle corresponding respectively inside and outside magnet steel and interior outer yoke, and it is with forming the complete electromagnetic induction loop of a cover, inside and outside magnet steel and interior outer yoke and rotating shaft are connected to form rotor by screw and connecting plate, rotate in bearing pedestal, iron core is then formed stator closing behind the bearing pedestal by positioning seat.The utility model passes through slotless configuration, the torque rotary speed characteristic of motor is improved, make its hardening, adopt in the time of by lasso formula winding and inside and outside rotor, improved the ratio of the actual induction length of coil widely, reduced the resistance of winding effectively, thereby efficient when having improved low cruise widely and power output, it is big to have a power to volume ratio, speed-regulating range width, low-speed performance is good, the efficient advantages of higher.Be particularly suitable for motor requirement speed adjustable range, it is huge that low speed changes, the efficient height, and the drive controlling occasion that volume is little is as direct-drive type multifunction washing machine, electric bicycle etc.

Description of drawings: Fig. 1, sectional view of the present utility model.

The profile of Fig. 2, iron-core coil.

Fig. 3, lasso formula coil are with traditional loop construction comparison diagram.

Embodiment: contrast Fig. 1, Fig. 2 learn that iron core 1 of the present utility model is a slotless configuration, and winding coil 2 lassos are on iron core 1, and iron core 1 is the split-type structure.Combine by three arc-shaped iron core 16, do like this and not only conveniently be inserted in coil, also simplified the structure of iron core simultaneously widely, reduce cost.Each iron core is provided with a neutral gear 3 and positions by screw 6 and positioning seat 4, location-plate 5, and positioning seat 4 closing bearing pedestal 14, forms stator by screw 15.What draw among Fig. 2 is a phase in 16 utmost point three-phase coils, and the A end is head end, and the X end is positive and negative around in succession carry out from head end to terminal each coil winding direction for terminal.Connect by

intercoil connection

7, and 16 utmost point motors only adopt 15 coils, cause is the three-phase Y-connection, the two-phase energising, the pairing power of that coil that is lacked is finished by a correspondence ring of another phase, be enclosed within the winding coil 2 on the iron core 1, its inside and outside circle corresponding respectively inside and outside

magnet steel

8,9 and inside and outside yoke 10,11 formed the complete electromagnetic induction loop of a cover jointly.Inside and

outside magnet steel

8,9 and interior outer yoke 10,11 rotating shafts 12 are respectively by the screw composition rotor that is connected with connecting plate 13, rotation in bearing pedestal 14.

As shown in Figure 3, because (traditional iron core has groove for core structure different, the utility model is slotless then) and the winding of coil different, cause the structure difference of winding coil, the inner width h of conventional coil is bigger than the inner width h ' of the utility model coil.Particularly outstanding when particularly lacking number of poles, this makes that the invalid binding limit of conventional coil is elongated.In addition, conventional coil is generally the fusiformis structure, and the invalid binding limit at two ends is two hypotenuses to be formed, and this can increase the length on the invalid binding of coil limit undoubtedly greatly, make the resistance of winding coil of traditional brush-less permanent magnetic direct current machine to reduce, thereby affect motor properties greatly.

Claims

1, a kind of electric machine with ring windings on internal and external rotors without slots, comprise iron core (1), be wound with winding coil (2) on the iron core (1), iron core is by the location-plate (5) of bottom, top positioning seat (4) is located with screw, and the bearing pedestal that closes (14) is formed stator by positioning seat (4), it is characterized in that winding coil (2) lasso is on iron core (1), in it, cylindrical respectively corresponding in, outer steel (8,9) and interior outer yoke (10,11), the common complete electromagnetic induction circuit of a cover of forming, in, outer steel (89) and interior outer yoke (10,11) and rotating shaft (12) by the screw composition rotor that is connected with connecting plate (13), rotation in bearing pedestal (14).

2, slotless electric machines according to claim 1, it is characterized in that described iron core (1) is the split-type structure, combined by three arc-shaped iron core (16), each iron core is provided with a neutral gear (3) and positions at this neutral gear place by screw (6) and positioning seat (4), location-plate (5).