CN102185391B

CN102185391B - Motor stator and production method thereof

Info

Publication number: CN102185391B
Application number: CN 201110123307
Authority: CN
Inventors: 侯树铭
Original assignee: JIANGMEN JIANGHAI HECHUANG ELECTRONIC TECHNOLOGY Co Ltd; MINGKEDA ELECTRIC APPLIANCES INDUSTRY Co Ltd HESHAN CITY
Current assignee: JIANGMEN JIANGHAI HECHUANG ELECTRONIC TECHNOLOGY Co Ltd; MINGKEDA ELECTRIC APPLIANCES INDUSTRY Co Ltd HESHAN CITY
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2013-01-30
Anticipated expiration: 2031-05-13
Also published as: CN102185391A

Abstract

The invention discloses a motor stator and a production method thereof. The motor stator comprises a stator and a stator winding, wherein the stator comprises a stator iron core which consists of a plurality of annularly-distributed stator teeth and an iron frame which is sleeved and fixed outside the stator iron core; an outer notch facing an outer ring and an inner notch facing an inner ring are formed between two adjacent stator teeth; the stator winding is wound on the stator teeth through the outer notch; and each outer notch is provided with an iron rivet for enclosing the outer notch after winding is completed. The outer side of the motor stator is provided with an outer notch through which an enameled wire enters and an outer winding mode is adopted, so that the working efficiency of winding operation is increased greatly; and meanwhile, an inner notch gap between every two of the stator iron core teeth can be optionally adjusted to a very narrow distance space according to a design requirement, so that the efficiency of a motor is finally increased, reduction in the motor efficiency is lowered, and the vibration and the noise are reduced.

Description

A kind of motor stator and production method thereof

Technical field

The present invention relates to a kind of motor stator, especially a kind of stator of electric moto used in compressor and production method thereof.

Background technology

The stator core of conventional motors is formed by the silicon steel sheet stack that polylith has between adjacent stator tooth towards the gap (interior gap) of center position, described stator core and be wrapped in the stator that stator winding on the iron core stator tooth consists of motor, its winding mode be interior around.Yet, in determined that around the winding mode of formula the gap space of its stator core between cog must have enough spaces just can allow the coil winding machine normal operation, and theoretical still in fact the stator tooth gap of broad gap for the efficient that improves motor and reduce vibration and noise all is very harmful.

Summary of the invention

For above situation, the invention provides a kind of Novel stator and production method thereof, by the interpolar magnetic gap of outer winding mode minimally minimizing stator tooth, improve the efficient of motor, reduce vibration and noise.

The technical solution used in the present invention can be described as:

A kind of motor stator, comprise stator and the stator winding that is wrapped on the described stator, described stator comprises that the stack of multi-disc silicon steel sheet forms stator core and is set with the chase that is fixed on described stator core outside, wherein said stator core is comprised of a plurality of stator tooths of arranging circlewise, be provided with between two adjacent described stator tooths towards the outer gap of outer ring with towards the interior gap of inner ring, described stator winding passes through outer gap on described stator tooth, also be provided with rivet hole on the described outer gap, described rivet hole is provided with the iron rivet for the outer gap of sealing.

A kind of improvement as above technical scheme is coated with the plastic insulation protective layer by the injection moulding mode on the described motor stator.

As a kind of improvement of above technical scheme, the annular of described chase for being complementary with described stator core outline, the one end is provided with for the bearing pedestal of mounted motor bearing and the boss that is used for containment circuit board.

The present invention also provides a kind of method for the production of the above motor stator simultaneously, may further comprise the steps:

1) when the silicon steel sheet of rolling composition stator core, gap is inboard on stator tooth keeps certain thickness loop-drive, consists of a not annular of disconnection so that described a plurality of stator tooths are coupled together;

2) carry out outer winding operation by the outer gap on the stator core, to form stator winding at stator tooth;

3) process the chase that is complementary with described stator core outline, and will enter with the stator core pressing of stator winding in the described chase;

4) in described rivet hole, squeeze into the iron rivet that is complementary, seal with the outer gap stator core;

5) by the mode of injection moulding the stator in the step 4 is carried out Plastic Package and form the plastic insulation protective layer, and only expose the loop-drive of the interior gap inboard that keeps;

6) loop-drive by gap inboard on the semi-finished product stator of lathe after with plastic packaging removes, and exposes interior gap, and can be simultaneously the inner ring of stator core be carried out cavetto and process to reach needed precision.

The invention has the beneficial effects as follows:

Motor stator of the present invention has the outer gap that enters for enamelled wire in the outside, and uses iron rivet to seal described outer gap after coiling finishes, and the winding mode of the externally-wound type that wherein adopts can greatly improve the operating efficiency of winding operation, reduces production costs; And very narrow any distance space can need to be adjusted to by design in the interior gap space of stator core between cog when using the winding mode of externally-wound type, this is for the efficient of final raising motor, reduce the deterioration of motor efficiency, it is all very favourable to reduce vibration and noise.

Description of drawings

Fig. 1 is the structural representation of stator core proposed by the invention;

Fig. 2 is the upward view of chase proposed by the invention;

Fig. 3 is the cutaway view of chase proposed by the invention;

Fig. 4 be motor stator proposed by the invention partly cut open structural representation;

Fig. 5 is the half-finished structural representation of stator core proposed by the invention.

Embodiment

Shown in Fig. 1,2,3,4 and 5, the invention discloses a kind of novel motor stator and production method thereof, described motor stator comprises stator 1 and stator winding 2, wherein stator winding 2 is wrapped on the stator 1 and produces magnetic field when energising.In the present embodiment, as shown in Figure 1, described stator 1 comprises stator core 11 and chase 12, wherein stator core 11 is formed by the silicon steel sheet stack of polylith roll forming, and the profile of chase 12 and stacking stator core 11 is complementary, ringwise, and be wrapped in the described stator core 11 outside fixations that rise.Stator core 11 is comprised of a plurality of stator tooths of arranging circlewise 13, rolling between two adjacent described stator tooths 13 have towards the outer gap 14 of outer ring with towards the interior gap 15 of inner ring, its China and foreign countries' gap 14 is used for coiling, and the enamelled wire that namely forms stator winding 2 is wrapped on the described stator tooth 13 by in addition gap 14.In addition, on described outer gap 14, also be provided with the rivet hole 16 that holds rivet, after coiling is finished, squeeze into the outside of iron rivet 17 sealing stator tooths 13 to form closed magnetic circuit.

Shown in Fig. 2 and 3, an end upper punch of annular chase 12 is pressed with the bearing pedestal 121 for the mounted motor bearing, wherein has the axis hole that allows motor shaft stretch out, and is convenient to install supporting rotor.For satisfying the needs of assembling variable-frequency motor, add a circle projection 122 between chase 12 main bodys of bearing pedestal 121 and annular, its inner space is used for installing the needed control circuit of variable-frequency motor.

In addition, on the end face of described chase 12, also be reserved with line outlet 123, for the control circuit board outlet of stator winding 2 and variable-frequency motor.

For guaranteeing the insulation effect of this product; and strengthen the intensity of this product; avoid this product in transportation or use procedure because colliding the loose fault that causes, the present invention also wraps up the plastic insulation protective layer 18 of the high pressure resistant puncture of one deck at motor stator by the injection moulding mode.

Wherein notice, as shown in Figure 1, have inside and

outside gap

14 and 15 between two adjacent stator tooths 13 in inside and outside both sides, but owing to leave the cavity that holds stator winding between the stator tooth 13, like this, described inside and outside gap 14 with 15 and the cavity that is communicated with both make stator 1 be formed by a plurality of stator tooths that separate 13, this structure inevitably can cause trouble in producing assembling, reduce production efficiency.Therefore, the invention allows for a kind of production method of producing described motor stator, the problem of scattering to solve said stator tooth 13.

Method for the production of the above motor stator provided by the present invention may further comprise the steps:

Step 1: when the silicon steel sheet of rolling composition stator core 11, the Outboard Sections of interior gap 15 towards the center at stator tooth 13 keeps certain thickness loop-drive 19, be among Fig. 5 dotted line to the part of inner ring, namely do not disconnect stator tooth 13, make the stator core 11 that between stator tooth, has gap 14 outside the coiling along the outer arc limit after the punching press of silicon steel sheet lamination, remain a complete annular of not scattering.

Step 2: the outer gap 14 by stator core 11 carries out outer winding operation, forms the stator winding 12 that is wrapped on the stator tooth 13, and reserves power supply lead wire outside.

Step 3: process the chase 12 that all mates with stator core 11 external diameter height, and described chase 12 suits are fixed on described stator core 11 outsides with stator winding 12.

Step 4: with the diameter iron rivet 17 identical with the bore of rivet hole 16 on being reserved in outer gap outer gap 14 sealings of the reservation of stator core 11 coiling.

Step 5: it is interior with plastic insulation protective layer 18 of the whole stator formation of plastic wraps that the wound stator 1 after the outer gap 14 of sealing is inserted in mould, makes whole motor stator shape firmly and play insulating effect, as shown in Figure 4.If motor is the frequency conversion type motor, can also be wrapped in relevant supporting circuit board simultaneously in the plastics to reach better sealed insulation effect.Wherein, after injection moulding was finished, the loop-drive 19 that the described inner ring of staying interior gap 15 plays stator tooth effect fastened to each other should expose outside plastic insulating layer 18.

Step 6: lathe on the finished motor stator of above step is clamped, the loop-drive 19 whole cars of above-mentioned former stator tooth 13 fastened to each other are fallen (soon the interior part car of dotted line falls among Fig. 5) with lathe tool, expose interior gap 15.In addition, after the cavetto processing of lathe to stator core 11, the internal diameter of the motor stator that coiling is good also can reach more pinpoint accuracy, avoid the internal diameter of motor stator in the course of processing, to lose circle and cause the air gap density between stator, rotor inconsistent, and further order is vibrated and noise with causing to motor decrease in efficiency at work.

In sum, motor stator of the present invention has the outer gap 14 that enters for enamelled wire in the outside, and after coiling finishes, using iron rivet 17 that outer gap 14 is sealed with the closed magnetic line of force, the winding mode of the externally-wound type that wherein adopts can greatly improve the operating efficiency of winding operation; And the interior gap 15 of stator core between cog can need to be adjusted to very narrow any gap by design when using the winding mode of externally-wound type, and this reduces the deterioration of motor efficiency for the efficient of final raising motor, and it is all very favourable to reduce vibration and noise.

The above is the preferred embodiment of the present invention, and it does not consist of limiting the scope of the invention, so long as realize that with essentially identical means purpose of the present invention all should belong to protection scope of the present invention.

Claims

1. motor stator, comprise stator (1) and be wrapped in stator winding (2) on the described stator (1), it is characterized in that: described stator (1) comprises that the stator core (11) and the suit that are formed by the stack of multi-disc silicon steel sheet are fixed on the outside chase (12) of described stator core (11), wherein said stator core (11) is comprised of a plurality of stator tooths of arranging circlewise (13), be provided with between two adjacent described stator tooths (13) towards the outer gap (14) of outer ring with towards the interior gap (15) of inner ring, described stator winding (2) passes through outer gap (14) on described stator tooth (13), also be provided with rivet hole (16) on the described outer gap (14), described rivet hole (16) is provided with the iron rivet (17) for the outer gap of sealing (14); Described chase (12) is the annular that is complementary with described stator core (11) outline, and the one end is provided with for the bearing pedestal of mounted motor bearing (121).

2. a kind of motor stator according to claim 1 is characterized in that: be coated with plastic insulation protective layer (18) by the injection moulding mode on the described motor stator.

3. a kind of motor stator according to claim 1, it is characterized in that: the annular of described chase (12) for being complementary with described stator core (11) outline, one end are provided with for the bearing pedestal of mounted motor bearing (121) and the boss (122) that is used for containment circuit board.

4. the production method of each described motor stator in the above claim of basis is characterized in that: said method comprising the steps of:

1) when the silicon steel sheet of rolling composition stator core (11), keeps certain thickness loop-drive (19) in the inboard of interior gap (15), consist of an annular that does not disconnect so that described a plurality of stator tooths (13) are coupled together;

2) carry out outer winding operation by the outer gap (14) on the stator core (11), to form stator winding (2) at stator tooth (13);

3) process the chase (12) that the outline with described stator core (11) is complementary, and will press fit into the stator core (11) of stator winding (2) in the described chase (12) fixing;

4) in described rivet hole (16), squeeze into the iron rivet (17) that is complementary, so that the outer gap (14) of stator core (11) is sealed;

5) mode by injection moulding is carried out Plastic Package with the stator (1) of gained in the step 4 and is formed plastic insulation protective layer (18), and only exposes and be retained in the inboard loop-drive (19) of interior gap (15);

6) by lathe will be in step 5 loop-drive (19) on the stator (1) of gained remove, expose interior gap (15), and can be simultaneously the inner ring of stator core (11) be carried out cavetto and process to reach needed precision.