CN110676952A - Stator connecting and positioning structure - Google Patents
Stator connecting and positioning structure Download PDFInfo
- Publication number
- CN110676952A CN110676952A CN201910849002.0A CN201910849002A CN110676952A CN 110676952 A CN110676952 A CN 110676952A CN 201910849002 A CN201910849002 A CN 201910849002A CN 110676952 A CN110676952 A CN 110676952A
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- stator
- stator core
- frame
- positioning
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A stator connecting and positioning structure belongs to the technical field of elastic fluid stators and comprises a motor shell, a stator core and a bearing frame, wherein the stator core is formed by annularly arranging split stator core components; the adjacent stator core components are in mortise and tenon interference connection; one end of the stator iron core component is provided with a mortise, and the other end of the stator iron core component is provided with a tenon matched with the mortise; the tenon is embedded in the mortise of the adjacent stator core assembly. The stator core is characterized in that a plurality of stator split punching sheets are mutually overlapped to form a 120-degree stator core split structure through symmetrical buckling points, then three stator core split punching sheets are used for forming the integral stator core through a tool, and all the split sheets of the stator core formed through punching are in tight fit and cannot slide mutually.
Description
Technical Field
The invention belongs to the technical field of elastic fluid stators, and particularly relates to a stator connecting and positioning structure.
Background
The centrifugal fan of the dust collector utilizes a motor rotor to drive a centrifugal impeller to rotate at a high speed, and air negative pressure is generated in a sealed shell, so that impurities such as dust and the like are sucked into a cleaning electric appliance in a dust collecting bag.
The stator mechanism is an important part of the centrifugal fan of the dust collector. The existing stator core connecting structure is generally in loose fit press fitting or welding connection, the three sections of the stator core can slide, and the axial size is constrained by a winding frame and winding wires, so that the difficulty of winding wires is increased; the welded connection also destroys the insulation of the stator core, increasing eddy current losses and costs due to the welding process.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a stator connection and positioning structure.
The invention adopts the following technical scheme.
A stator connecting and positioning structure comprises a motor shell, a stator core and a bearing frame, wherein the stator core is formed by annularly arranging split stator core components; the adjacent stator core components are in mortise and tenon interference connection; one end of the stator iron core component is provided with a mortise, and the other end of the stator iron core component is provided with a tenon matched with the mortise; the tenon is embedded in the mortise of the adjacent stator core assembly.
The motor shell is in a hollow cylindrical shape, and a positioning pin slot is formed in the upper part of the inner wall of the motor shell; first screw holes and first pins are uniformly distributed on the inner wall of the motor shell at equal angles.
The stator iron core assembly comprises an arc-shaped frame, a stator positioning frame and an inner circular frame; the side surface of the arc-shaped frame is arc-shaped with a central angle of 120 degrees; the upper end of the stator positioning frame is fixedly arranged on the inner wall of the arc-shaped frame, and the lower end of the stator positioning frame is fixedly arranged in the middle of the inner circular frame; the side surface of the inner circular frame is arc-shaped, and the inner circular frame and the arc-shaped frame are arranged coaxially; a winding slot is formed between the adjacent stator positioning frames, and the adjacent inner round frames are arranged in a clearance mode.
A stator positioning piece is arranged in the middle of the outer wall of the arc-shaped frame; the stator positioning piece comprises a positioning through hole and a pin hole which are axially arranged; the bearing frame is of an integrated claw type structure and comprises a second bearing chamber and three bent claws which are radially arranged on the outer edge of the second bearing chamber at equal angles; the free end of the bent claw is provided with a second threaded hole and a second column pin; the first pin and the second pin are respectively inserted at two ends of a pin hole of the stator core assembly; bolts penetrate through the second threaded holes, the positioning through holes and the first threaded holes;
the stator iron core assembly is formed by laminating and riveting stator iron core assembly punching sheets; the stator core assembly stamped sheet is sheet-shaped and has the same shape as the side surface of the stator core assembly; the stator core assembly punching sheet comprises an arc-shaped sheet, a stator positioning sheet and an inner circular sheet; and riveting points are arranged in the middle of the left side of the arc-shaped piece, in the middle of the right side of the arc-shaped piece and in the middle of the stator positioning piece.
The stator mechanism further comprises a winding frame; the winding frames are respectively arranged at two sides of the stator iron core component, and the winding frames at two sides of the stator iron core component cover the whole surface of the stator positioning frame and the upper surface of the inner circular frame; the inner wall of the inner round frame is exposed; the winding frame is provided with a convex brim; the convex eaves extend axially along the inner circular frame.
The stator core is characterized in that a plurality of stator split punching sheets are mutually overlapped to form a 120-degree stator core split structure through symmetrical buckling points, then three stator core split punching sheets are used for forming an integral stator core through a tool, and all the split sheets of the stator core formed through punching are in tight fit and cannot slide mutually; the stator core and the motor shell adopt a pin positioning structure, so that the installation is convenient, and the influence of the size and the form and position tolerance is small.
Drawings
FIG. 1 is an assembly view of a stator mechanism;
fig. 2 is a top view of the stator core;
fig. 3 is a perspective view of the stator core;
FIG. 4 is a perspective view of a stator core assembly;
figure 5 is a top view of a stator core assembly lamination;
fig. 6 is a perspective view of the bearing bracket;
FIG. 7 is another perspective view of the bearing bracket;
fig. 8 is a perspective view of the bobbin;
fig. 9 is a perspective view of the motor housing;
in the figure: the stator structure 500, a motor housing 501, a positioning pin slot 502, a stator core 503, a first threaded hole 504, a first pin 505, a stator core assembly 506, an arc frame 507, a stator positioning frame 508, an inner circular frame 509, a winding slot 510, a positioning through hole 511, a pin hole 512, a stator core assembly punching sheet 513, an arc sheet 514, a stator positioning sheet 515, an inner circular sheet 516, a riveting point 517, a winding frame 518, a bearing frame 519, a second bearing chamber 520, a bent claw 521, a second threaded hole 522, a second pin 523, a convex brim 524, a mortise 525 and a tenon 526.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A stator connecting and positioning structure includes a motor housing 501, a stator core 503, a bobbin 518, and a bearing bracket 519.
The motor housing 501 is hollow and cylindrical, and a positioning pin groove 502 is formed in an upper portion of an inner wall thereof.
First threaded holes 504 and first pins 505 are uniformly distributed on the inner wall of the motor housing 501 at equal angles. Preferably, there are 3 pairs of the first threaded holes 504 and the first pins 505, and the angle of the adjacent first threaded holes 504 is 60 °.
The stator core 503 is formed by three split stator core assemblies 506 in a surrounding manner; adjacent stator core assemblies 506 are in interference mortise and tenon joint.
One end of the stator iron core assembly 506 is provided with a mortise 525, and the other end of the stator iron core assembly is provided with a tenon 526 matched with the mortise 525; the tenon 526 is embedded in the mortise 525 of the adjacent stator core assembly 506. Preferably, the shape of the tenon 526 and the mortise 525 is trapezoidal. As another preference, the shape of the tenon 526 and the mortise 525 is triangle or circular arc, and a conventional tenon-and-mortise structure may also be adopted.
The traditional stator core connecting structure is generally in loose fit press fitting or welded connection, three split parts of the stator core can slide, the axial size constraint is carried out by means of a winding frame and winding, the enameled wire can be pulled by sliding dislocation, the enameled wire is easy to damage by repeated folding, and the winding difficulty is increased; and the joints of the welded stator cores can destroy the insulativity between the upper layer and the lower layer of the stator core, thereby increasing the eddy current loss and the cost caused by the welding process.
The stator core assembly 506 is formed by firstly laminating a plurality of stator split punching sheets into a 120-degree stator core split structure through symmetrical buckling points, then stamping three stator core split sheets to form an integral stator core, wherein the stator core split sheets formed by stamping are in tight fit and cannot slide mutually.
The stator core assembly 506 comprises an arc-shaped frame 507, a stator positioning frame 508 and an inner circular frame 509; the side surface of the arc-shaped frame 507 is arc-shaped with a central angle of 120 degrees; the upper end of the stator positioning frame 508 is fixedly arranged on the inner wall of the arc-shaped frame 507, and the lower end of the stator positioning frame is fixedly arranged in the middle of the inner circular frame 509; the side of the inner circular frame 509 is arc-shaped, and the inner circular frame 509 and the arc-shaped frame 507 are coaxially arranged. The adjacent stator spacers 508 form a winding slot 510 therebetween, and the adjacent inner circular spacers 509 are spaced apart from each other.
It should be noted that the stator mechanism 500 may adopt a three-slot and three-phase structure, and at this time, the upper end of the stator positioning frame 508 is fixedly installed in the middle of the inner wall of the arc-shaped frame 507; a six-slot three-phase structure may also be employed. And only routine variations in the number of parts or positions of parts are considered equivalent in this disclosure and are intended to fall within the scope of the present application.
This technical scheme carries out the joggle pressure equipment through the split type stator core who rivets formation to split type stator core subassembly 506 stack, and the whole stator core who produces winds after installing the bobbin, and the stator winding of completion passes through location structure and motor casing and links to each other with the bearing bracket, and it produces following beneficial effect:
1. welding procedures are reduced, eddy current loss is reduced, and motor efficiency is improved;
2. the difficulty and the cost of mould development are reduced;
3. the motor shell, the bearing frame and the stator core are all concentric, unbalanced electromagnetic force is reduced, and vibration is reduced;
4. the winding is convenient: the split stator core can be assembled after being wound.
And a stator positioning piece is arranged in the middle of the outer wall of the arc-shaped frame 507. Preferably, the stator positioning member includes a positioning through hole 511 and a pin hole 512 both axially disposed.
The bearing frame 519 is of an integrated claw type structure and comprises a second bearing chamber 520 and three bent claws 521 radially arranged on the outer edge of the second bearing chamber 520 at equal angles; the free end of the curved claw 521 is provided with a second threaded hole 522 and a second cylindrical pin 523.
During the installation, insert the column pin hole 512 both ends of locating stator iron core subassembly 506 respectively with first pin 505 on the motor casing 501 and the second pin 523 on the bearing bracket 519 earlier to tentatively fix a position motor casing 501, stator iron core subassembly 506 and bearing bracket 519, reuse bolt passes through second screw hole 522 on the bearing bracket 519, the location through-hole 511 of stator iron core subassembly 506, the first screw hole 504 of motor casing 501, thereby press from both sides stator iron core subassembly 506 and locate between motor casing 501 and bearing bracket 519. Preferably, the positioning through hole 511 may be a round hole or a semicircular hole with a smooth inner wall, and the inner walls of the first threaded hole 504 and the second threaded hole 522 are both provided with threads. As another preferred example, the positioning through hole 511 may be a round hole or a semicircular hole with a smooth inner wall, and the inner walls of the first threaded hole 504 and the second threaded hole 522 are both smooth. The bolt passes through the second screw hole 522, the positioning through hole 511, and the first screw hole 504 and is fixed by a nut.
According to the traditional pin positioning structure, when a motor rotor is installed, a stator is bounced by magnetic steel suction to damage a pin or the pin cannot be installed due to size and form and position tolerance. According to the technical scheme, the stator core and the motor shell are of a pin positioning structure, so that the motor is convenient to install and is slightly influenced by size and form and position tolerance.
When the motor of the dust collector on the market is installed, the bearing frame is buckled on the motor shell, so that the stator core is not stressed and is in a suspended state, and vibration is easy to generate. According to the stator core mounting structure, the bearing frame is stressed on the stator core and is circumferentially positioned by the pin, and then the bolt is locked, so that the stator core is guaranteed to have constraint force in all directions in the machine body, and vibration is reduced.
The motor stator core of the dust collector on the market is installed in a non-concentric mode, unbalanced electromagnetic force is generated when the motor stator core rotates, vibration is caused, loss is increased, and the service life of a bearing is shortened. According to the stator core installation method, three cylindrical pins are respectively added on the motor shell and the bearing frame, so that the stator core is concentric with the motor shell, and the stator core is concentric with the bearing frame, so that the motor shell, the bearing frame and the stator core are all concentric, unbalanced electromagnetic force is reduced, and vibration is reduced.
Preferably, after the motor housing 501, the stator core assembly 506 and the bearing frame 519 are mechanically fixed, glue can be added to the connection position of the motor housing 501 and the stator core assembly 506 and the connection position of the stator core assembly 506 and the bearing frame 519 for fastening and fixing, so that the structural strength of the motor is further ensured.
The stator iron core assembly is formed by laminating and riveting stator iron core assembly punching sheets 513. Stator core subassembly is towards piece 513 and is the slice, and its shape is the same with stator core subassembly 506's side shape, can select the stator core subassembly towards piece 513 stack riveting of different quantity as required to form the stator core subassembly 506 of required thickness. The stator core assembly punching sheet 513 comprises an arc sheet 514, a stator positioning sheet 515 and an inner circular sheet 516; riveting points 517 are arranged in the middle of the left side of the arc-shaped sheet 514, the middle of the right side of the arc-shaped sheet and the middle of the stator positioning sheet 515.
Preferably, the stator mechanism 500 further includes a bobbin 518; the bobbins 518 are respectively disposed at two sides of the stator core assembly 506, and the bobbins 518 at two sides of the stator core assembly 506 cover the entire surface of the stator positioning frame 508 and the upper surface of the inner round frame 509. The inner wall of the inner circular shelf 509 is exposed. The bobbin 518 is provided with a convex brim 524; the eaves 524 extend axially along the inner ledge 509.
After the stator core is formed, the upper surface and the lower surface of the stator core need to be added with winding frames, and the shape of the winding frames is set according to the shape of the stator core and is divided into six parts including a three-segment upper part and a three-segment lower part. When the device is installed, the winding frame with the wiring terminal is buckled on the upper part, and the other winding frame is buckled on the lower part; and after the installation is finished, winding the enameled wire to form a stator winding. The function of the bobbin: 1. the enameled wire is prevented from being in direct contact with the stator core, and the insulation protection effect is achieved; 2. the size of the winding enameled wire is restrained, and the enameled wire is prevented from loosening and entering an inner circle to be contacted with the rotor magnetic steel; 3. the positioning of the three phase lines of the winding is ensured, and the vibration is reduced.
The existing stator core connecting structure is generally in loose fit press fitting or welding connection, the three sections of the stator core can slide, and the axial size is constrained by a winding frame and winding wires, so that the difficulty of winding wires is increased; the welded connection also destroys the insulation of the stator core, increasing eddy current losses and costs due to the welding process.
The stator core is characterized in that a plurality of stator split punching sheets are mutually overlapped to form a 120-degree stator core split structure through symmetrical buckling points, then three stator core split punching sheets are used for forming an integral stator core through a tool, and all the split sheets of the stator core formed through punching are in tight fit and cannot slide mutually; the stator core and the motor shell adopt a pin positioning structure, so that the installation is convenient, and the influence of the size and the form and position tolerance is small. The problems of efficiency reduction caused by damage to the insulativity of the stator core due to welding of the stator core and relative movement of the stator core caused by loose fit press mounting are solved; the problems of eccentricity and vibration of the stator core are solved.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (6)
1. A stator connecting and positioning structure comprises a motor shell (501), a stator iron core (503) and a bearing frame (519), and is characterized in that the stator iron core (503) is formed by annularly arranging split stator iron core components (506); the adjacent stator core components (506) are in mortise and tenon interference connection; one end of the stator iron core assembly (506) is provided with a mortise (525), and the other end is provided with a tenon (526) matched with the mortise (525); tenon (526) are embedded in mortise (525) of adjacent stator core assembly (506).
2. A stator connecting and positioning structure as claimed in claim 1, wherein the motor housing (501) is hollow and cylindrical, and has a positioning pin slot (502) formed at an upper portion of an inner wall thereof; first threaded holes (504) and first pins (505) are uniformly distributed on the inner wall of the motor shell (501) at equal angles.
3. A stator connection and positioning structure according to claim 1, characterized in that the stator core assembly (506) comprises an arc-shaped frame (507), a stator positioning frame (508), an inner circular frame (509); the side surface of the arc-shaped frame (507) is arc-shaped with a central angle of 120 degrees; the upper end of the stator positioning frame (508) is fixedly arranged on the inner wall of the arc-shaped frame (507), and the lower end of the stator positioning frame is fixedly arranged in the middle of the inner circular frame (509); the side surface of the inner circular frame (509) is arc-shaped, and the inner circular frame (509) and the arc-shaped frame (507) are coaxially arranged; a winding slot (510) is formed between the adjacent stator positioning frames (508), and the adjacent inner circular frames (509) are arranged in a clearance mode.
4. A stator connecting and positioning structure according to claim 3, wherein a stator positioning member is provided in the middle of the outer wall of the arc-shaped frame (507); the stator positioning piece comprises a positioning through hole (511) and a pin hole (512) which are axially arranged; the bearing frame (519) is of an integrated claw type structure and comprises a second bearing chamber (520) and three bent claws (521) which are radially arranged on the outer edge of the second bearing chamber (520) at equal angles; the free end of the bent claw (521) is provided with a second threaded hole (522) and a second pin (523); the first pin (505) and the second pin (523) are respectively inserted into two ends of a pin hole (512) of the stator core assembly (506); bolts penetrate through the second threaded hole (522), the positioning through hole (511) and the first threaded hole (504).
5. A stator connecting and positioning structure according to claim 1, wherein the stator core assembly (506) is laminated and riveted by a stator core assembly punching sheet (513); the stator core assembly punching sheet (513) is sheet-shaped, and the shape of the stator core assembly punching sheet is the same as the shape of the side surface of the stator core assembly (506); the stator core assembly punching sheet (513) comprises an arc sheet (514), a stator positioning sheet (515) and an inner circular sheet (516); riveting points (517) are arranged in the middle of the left side of the arc-shaped piece (514), in the middle of the right side of the arc-shaped piece and in the middle of the stator positioning piece (515).
6. A stator attachment and positioning structure according to claim 3, wherein said stator means (500) further comprises a bobbin (518); the winding frames (518) are respectively arranged at two sides of the stator iron core component (506), and the winding frames (518) at two sides of the stator iron core component (506) cover the whole surface of the stator positioning frame (508) and the upper surface of the inner circular frame (509); the inner wall of the inner round rack (509) is exposed; the winding frame (518) is provided with a convex brim (524); the convex eaves (524) extend axially along the inner circular frame (509).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910849002.0A CN110676952A (en) | 2019-09-09 | 2019-09-09 | Stator connecting and positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910849002.0A CN110676952A (en) | 2019-09-09 | 2019-09-09 | Stator connecting and positioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110676952A true CN110676952A (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910849002.0A Pending CN110676952A (en) | 2019-09-09 | 2019-09-09 | Stator connecting and positioning structure |
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| CN (1) | CN110676952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258738A (en) * | 2021-06-16 | 2021-08-13 | 常州神力电机股份有限公司 | Offshore wind driven generator stator core processing location frock |
-
2019
- 2019-09-09 CN CN201910849002.0A patent/CN110676952A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258738A (en) * | 2021-06-16 | 2021-08-13 | 常州神力电机股份有限公司 | Offshore wind driven generator stator core processing location frock |
| CN113258738B (en) * | 2021-06-16 | 2022-03-25 | 常州神力电机股份有限公司 | Offshore wind driven generator stator core processing location frock |
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