CN209072164U - A kind of external rotor electric machine with cooperation number of poles - Google Patents

Abstract

The utility model discloses a kind of external rotor electric machines with cooperation number of poles, including mutually matched stator and rotor, the stator includes track ring (1), protrusion (2) are equipped on the inside of track ring (1), track ring (1) surrounding is evenly distributed with 27 outwardly extending magnetic pole of the stator (3)；The rotor includes rotor framework (4), and rotor framework (4) surrounding is evenly distributed with the rotor magnetic pole (5) of 30 with magnetic pole of the stator (3) cooperation.The utility model have the characteristics that good operating stability, occupy little space with it is highly-safe.

Description

A kind of external rotor electric machine with cooperation number of poles

Technical field

The utility model relates to a kind of external rotor electric machine, especially a kind of external rotor electric machine with cooperation number of poles.

Background technique

External rotor electric machine is to be arranged by that will have the stator of magnetizing coil in inside, makes winding on stator after powered up Excitation field is generated, so that the rotor in outside be driven to rotate under excitation effect, converts electrical energy into mechanical energy.But conventional is outer The ratio of its rotor magnetic pole and magnetic pole of the stator is 4:3 in rotor electric machine, and the number of magnetic poles of stator is also at 30 or more, the magnetic pole ratio Regular meeting causes the problem that motor flux density is high, cogging torque is big, so as to cause the revolving speed in the increase and operational process of motor load Fluctuation, stability are poor；The outer dimension of its motor also will receive the limitation of its internal structure, and reduce itself uses model It encloses.In addition, conventional motors often will appear the problem of coiling difficulty is big, and easy wiping is touched between adjacent winding in coiling, cause Winding coil wears short circuit at work, and safety is poor.Therefore, existing external rotor electric machine there are poor work stability, account for With the problem that space is big and safety is low.

Utility model content

The purpose of the utility model is to provide a kind of external rotor electric machines with cooperation number of poles.It has the operation is stable Property is good, occupies little space and highly-safe feature.

The technical solution of the utility model includes: a kind of external rotor electric machine with cooperation number of poles, including mutually matched stator And rotor, the stator include track ring, are equipped with protrusion on the inside of track ring, track ring surrounding is evenly distributed with 27 to extension The magnetic pole of the stator stretched；The rotor includes rotor framework, and rotor framework surrounding is evenly distributed with 30 and magnetic pole of the stator cooperation Rotor magnetic pole.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, the magnetic pole of the stator includes being located on the outside of track ring Bobbin winder base, bobbin winder base end connecting stator ring, bobbin winder base inside are equipped with stator core, are wound with winding coil on the outside of bobbin winder base.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, the winding coil is three-phase windings, each winding It is respectively wound around on 9 bobbin winder bases, the winding on adjacent bobbin winder base is different windings.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, the junction of the track ring and magnetic pole of the stator is in ring Several wire-wrap boards are distributed in shape, are set in distance between adjacent wire-wrap board, be all provided on each wire-wrap board there are three from low to high according to The wrapping post of secondary setting, the wrapping post on each wire-wrap board are located at the tip inside of each magnetic pole of the stator.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, it is fixed that the track ring close to magnetic pole of the stator side is equipped with Several reinforcing ribs are distributed with far from magnetic pole of the stator side in position ring, positioning ring in a ring, and the bottom of reinforcing rib is mutually interconnected with track ring It connects.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, the protrusion includes being evenly distributed on to determine in a ring Multiple mounting base groups on the inside of subring, each mounting base group include the first mounting base, and the first mounting base two sides are equipped with symmetrical the Location hole is equipped in two mounting bases, the first mounting base and the second mounting base.

In a kind of external rotor electric machine with cooperation number of poles above-mentioned, the interior circular diameter of the track ring is 150~ 200mm, the width of track ring are 6~12mm, and the length of the magnetic pole of the stator is 35~45mm.

It is above-mentioned it is a kind of with cooperation number of poles external rotor electric machine in, the rotor magnetic pole with a thickness of 4~8mm, it is described The interior circular diameter of rotor magnetic pole is 270~300mm.

Compared with prior art, the utility model can make this reality by the cooperation of the number of poles of magnetic pole of the stator and rotor magnetic pole Have the characteristics that Low gullet torque and low magnetic density with novel, to improve the working efficiency and job stability of motor；Rotor magnetic After the quantity of pole and magnetic pole of the stator reduces, additionally it is possible to effectively reduce track ring and rotor while keeping motor job stability The corresponding size of skeleton makes the utility model that can integrally have the characteristics of compact-sized, to occupy little space, to improve this The use scope of utility model；The utility model is also according to the outer dimension of the position optimization wire-wrap board of magnetic pole of the stator and corresponding Position enables winding coil to facilitate worker to the wiring of different windings in winding, between increasing adjacent winding in cabling Away from, and prevent the mistake occurred in winding process around problem, to improve the security performance of the utility model.

In addition, the utility model passes through the multiple mounting base groups being distributed in a ring, stator ring structure intensity can improved While improve producer is made by the cooperation of the first mounting base and the second mounting base to the locating effect and positioning accuracy of stator It can be positioned according to the hole location of joint outer part to separately through one of mounting base, two kinds of peaces can also be passed through simultaneously Dress seat is positioned, and the installation difficulty of producer is reduced while guaranteeing locating effect；By to track ring, magnetic pole of the stator and Rotor magnetic pole it is dimensionally-optimised, additionally it is possible to so that the utility model is reduced the occupied space of itself while guaranteeing rotating effect. So the utility model can have the characteristics that good operating stability, occupy little space with it is highly-safe.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of stator；

Fig. 2 is the structural schematic diagram of rotor.

The label in accompanying drawing is: 1- track ring, 2- protrusion, 3- magnetic pole of the stator, 4- rotor framework, 5- rotor magnetic pole, 6- Wire-wrap board, 7- positioning ring, 8- reinforcing rib, the first mounting base of 9-, the second mounting base of 10-, 301- bobbin winder base, 302- stator core, 601- wrapping post.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model The foundation of limitation.

Embodiment.A kind of external rotor electric machine with cooperation number of poles is constituted as shown in Figure 1, including mutually matched stator And rotor, the stator include track ring 1, are equipped with protrusion 2 on the inside of track ring 1,1 surrounding of track ring be evenly distributed with 27 to The magnetic pole of the stator 3 of outer extension；The rotor includes rotor framework 4, and 4 surrounding of rotor framework is evenly distributed with 30 and magnetic pole of the stator The rotor magnetic pole 5 of 3 cooperations.

The magnetic pole of the stator 3 includes the bobbin winder base 301 positioned at the outside of track ring 1,301 end connecting stator ring 1 of bobbin winder base, It is equipped with stator core 302 on the inside of bobbin winder base 301, is wound with winding coil on the outside of bobbin winder base 301.

The winding coil is three-phase windings, and each winding is respectively wound around on 9 bobbin winder bases 301, adjacent bobbin winder base 301 On winding be different windings.

The junction of the track ring 1 and magnetic pole of the stator 3 is distributed with several wire-wrap boards 6 in a ring, between adjacent wire-wrap board 6 Be set in distance, be all provided on each wire-wrap board 6 there are three the wrapping post 601 that sets gradually from low to high, on each wire-wrap board 6 around Terminal 601 is located at the tip inside of each magnetic pole of the stator 3.

Track ring 1 close to 3 side of magnetic pole of the stator is equipped with positioning ring 7, and positioning ring 7 is in ring far from 3 side of magnetic pole of the stator Several reinforcing ribs 8 are distributed in shape, and the bottom of reinforcing rib 8 and track ring 1 are connected with each other.

The protrusion 2 includes the multiple mounting base groups for being evenly distributed on 1 inside of track ring in a ring, each mounting base group Including the first mounting base 9,9 two sides of the first mounting base are equipped with symmetrical second mounting base 10, the first mounting base 9 and the second mounting base Location hole is equipped on 10.

The interior circular diameter of the track ring 1 is 180mm, and the width of track ring 1 is 9.7mm, the length of the magnetic pole of the stator 3 For 39.3mm.

The rotor magnetic pole 5 with a thickness of 6.5mm, the interior circular diameter of the rotor magnetic pole 5 is 280mm.

Working principle of the utility model is: the utility model is by the proportion to magnetic pole of the stator 3 and rotor magnetic pole 5, it can The cogging torque and flux density of motor are reduced, to make motor can reduce the power consumption of itself in rotation and avoid vibration or noise Generation, good operating stability.The quantity of magnetic pole of the stator 3 and rotor magnetic pole 5 can also make track ring 1 and rotor bone after reduction Frame 4 reduces the outer dimension of itself, so that making motor integrally has lesser volume and occupied space.Winding coil is in coiling When, by the position optimization of the interval setting and each wrapping post 601 of each wire-wrap board 6, it can reduce the coiling difficulty of different windings, So that worker is clearly identified 301 position of bobbin winder base that each winding to be wound, thus avoid the problem that it is wrong around；By same The different wrapping post 601 of height on one wire-wrap board 6 can make adjacent winding, in interlaced arrangement, reduce coil in coiling and twine Around the rear probability mutually touched；It can also play the role of keeping off line to enameled wire by positioning ring 7, enable enameled wire in coiling The contact of enough reduction and outside, further increases the job stability and safety of the utility model.Worker may be used also during installation It is fixed with being selected that the first mounting base 9 or the second mounting base 10 is used alone according to the connection difficulty of different hole locations, side Just the installation of worker；When easy to connect, worker can also be simultaneously fixed the first mounting base 9 and the second mounting base 10, To guarantee being bonded for stator.

Claims (8)

1. a kind of external rotor electric machine with cooperation number of poles, it is characterised in that: described fixed including mutually matched stator and rotor Attached bag includes track ring (1), is equipped with protrusion (2) on the inside of track ring (1), and track ring (1) surrounding is evenly distributed with 27 to extension The magnetic pole of the stator (3) stretched；The rotor includes rotor framework (4), and rotor framework (4) surrounding is evenly distributed with 30 and stator magnet The rotor magnetic pole (5) of pole (3) cooperation.

2. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: the magnetic pole of the stator It (3) include the bobbin winder base (301) being located on the outside of track ring (1), bobbin winder base (301) end connecting stator ring (1), bobbin winder base (301) inside is equipped with stator core (302), is wound with winding coil on the outside of bobbin winder base (301).

3. a kind of external rotor electric machine with cooperation number of poles according to claim 2, it is characterised in that: the winding coil For three-phase windings, each winding is respectively wound around on 9 bobbin winder bases (301), the winding on adjacent bobbin winder base (301) be it is different around Group.

4. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: the track ring (1) it is distributed with several wire-wrap boards (6) with the junction of magnetic pole of the stator (3), is set between adjacent wire-wrap board (6) in interval in a ring It sets, is all provided on each wire-wrap board (6) there are three the wrapping post (601) that sets gradually from low to high, the coiling on each wire-wrap board (6) Column (601) is located at the tip inside of each magnetic pole of the stator (3).

5. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: close to magnetic pole of the stator (3) track ring (1) of side is equipped with positioning ring (7), and positioning ring (7) is far from magnetic pole of the stator (3) if side is distributed in a ring Dry reinforcing rib (8), the bottom and track ring (1) of reinforcing rib (8) are connected with each other.

6. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: the protrusion It (2) include the multiple mounting base groups being evenly distributed on the inside of track ring (1) in a ring, each mounting base group includes the first mounting base (9), the first mounting base (9) two sides are equipped with symmetrical second mounting base (10), in the first mounting base (9) and the second mounting base (10) It is equipped with location hole.

7. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: the track ring (1) interior circular diameter is 150~200mm, and the width of track ring (1) is 6~12mm, and the length of the magnetic pole of the stator (3) is 35 ~45mm.

8. a kind of external rotor electric machine with cooperation number of poles according to claim 1, it is characterised in that: the rotor magnetic pole (5) with a thickness of 4~8mm, the interior circular diameter of the rotor magnetic pole (5) is 270~300mm.