CN203219001U - Stator punching sheet, stator iron core and electromotor - Google Patents
Stator punching sheet, stator iron core and electromotor Download PDFInfo
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- CN203219001U CN203219001U CN 201320098231 CN201320098231U CN203219001U CN 203219001 U CN203219001 U CN 203219001U CN 201320098231 CN201320098231 CN 201320098231 CN 201320098231 U CN201320098231 U CN 201320098231U CN 203219001 U CN203219001 U CN 203219001U
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- stator punching
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Abstract
The utility model provides a stator punching sheet, a stator iron core and an electromotor, wherein the stator punching sheet is provided with a circular ring-shaped yoke part and multiple teeth which extend outward along the radial direction of the stator punching sheet from the yoke part, a groove is formed between each two neighboring teeth, the center part of the stator punching sheet is provided with an inner circular hole, end lines at the two sides of the tooth top of each tooth form an included angle which is an acute angle ranging between 25 degrees and 45 degrees. The stator iron core is formed by laminating multiple stator punching sheets. The electromotor is provided with a stator and a rotor which is mounted outside the stator in a sleeved manner, and the stator is provided with the stator iron core and a wire coil which is winded around the stator iron core. The stator punching sheet, the stator iron core and the electromotor are characterized in that the rotor can rotate smoothly, and noise generated in electromotor operation time can be reduced.
Description
Technical field
The utility model relates to machine field, the stator core that especially relates to a kind of motor of external-rotor-type and have stator punching that this motor uses, be overrided to form by stator punching.
Background technology
Motor is widely used in the various electric equipments of industrial production and life, and prior motor has stator and rotor, and armature spindle is installed in the rotor and with the rotation of rotor and rotates, and outputting power thus.The position relation of rotor and stator of pressing is divided, and prior motor is divided into inner rotor type motor and external rotor electric machine, and the rotor of inner rotor type motor is installed in the stator, and external rotor electric machine then is that stator is installed in the rotor.
Usually, the end cap that inner rotor type motor has housing and is positioned at the housing two ends, housing and end cap surround a cavity, and stator and rotor are installed in the cavity, and stator has stator core and is wrapped in coil on the stator core.The middle part of stator has the rotor installing hole, and rotor is installed in the rotor installing hole, and can rotate with respect to stator.Armature spindle is installed in the rotor, and with the rotor interference fit.But the stator of inner rotor type motor is sleeved on outside the rotor, so the volume of stator core is bigger, and the area of the stator punching of manufacturing stator core is also corresponding bigger, and employed silicon steel material is more, and production efficiency is not high.
The structure of existing a kind of external rotor electric machine as shown in Figure 1, motor has front end housing 11 and rear end cap 12, front end housing 11 surrounds a cavity with rear end cap 12, stator 15 and rotor 16 are installed in cavity.The rotor 16 of motor is sleeved on outside the stator 15, and this rotor 16 is cage rotor, and the middle part of stator 15 offers axis hole 19.
The middle part of motor is provided with armature spindle 14, and armature spindle 14 is fixedlyed connected with connecting bushing 13, and armature spindle 14 passes axis hole 19.The two ends of axis hole 19 are separately installed with bearing 17,18, are used for support rotor axle 14.
The edge of front end housing 11 is embedded in the connecting bushing 13, and front end housing 11 is fixedlyed connected with rotor 16.During machine operation, 15 rotations of rotor 16 relative stator, thus drive front end housing 11, connecting bushing 13 and armature spindle 14 rotations.
The coil of stator 15 is wrapped on the tooth of stator core, so the part of coil is embedded in the groove of stator core.
Because the angle that forms between the tooth top both sides end line of each tooth 22 of existing stator punching is bigger, be parallel between the notch both ends of the surface of each groove 23, have influence on the alternating magnetic field stability that is produced by coil like this, thereby it is smooth and easy inadequately to cause rotor 16 to rotate, and produces bigger noise when causing the motor operation.
Summary of the invention
First purpose of the present utility model provides the stator punching that a kind of stator that is conducive to motor produces stabilizing magnetic field.
Second purpose of the present utility model provides a kind of stable stator core in magnetic field that produces when motor moves.
The less motor of noise when the 3rd purpose of the present utility model provides a kind of the operation.
For realizing first purpose of the present utility model, the stator punching that the utility model provides comprises circular yoke portion, and be provided with from yoke portion along the outward extending a plurality of teeth of stator punching radial direction, form groove between two adjacent teeth, and the middle part of stator punching is provided with interior circular hole, wherein, the angle that the tooth top two side ends line of each tooth forms is acute angle, and acute angle is between 25 ° to 45 °.
By such scheme as seen, be arranged to have the acute angle angle between 25 ° to 45 ° between the tooth top both sides end line with each tooth, can make and form a less angle between the both sides end line of notch, thereby the magnetic field that coil is produced is more stable, be conducive to rotor and rotate swimmingly, the noise that produces when reducing the motor operation.
A preferred scheme is that the following end line of tooth top is vertical with the tooth root side of tooth.Like this, can simplify the mould design difficulty of punching press stator punching, the processing of stator punching is comparatively simple.
Further scheme is to be provided with rounded corner between the following end line of tooth top and the side of tooth root.By between the side of the following end line of tooth top and tooth root, rounded corner being set, avoid the right angle that the enamelled wire that is wrapped in the coil on the tooth is caused damage, be conducive to guarantee integrality and the fail safe of coil, thereby guarantee the safety of motor operation.
Further scheme is, the width of rebate of groove is between 1.5 millimeters to 2.3 millimeters.Owing to the notch design of groove is got less, the magnetic field that coil produces is more even, stable, the noise of generation when being conducive to reduce the motor operation.
For realizing second purpose of the present utility model, the stator core that the utility model provides is overrided to form by the multi-disc stator punching, each stator punching has circular yoke portion, and be provided with from yoke portion along the outward extending a plurality of teeth of stator punching radial direction, form groove between two adjacent teeth, and the middle part of stator punching is provided with interior circular hole, wherein, the angle that the tooth top two side ends line of each tooth forms is acute angle, and acute angle is between 25 ° to 45 °.
By such scheme as seen, the angle that forms between the tooth top both sides end line of each tooth of stator punching is between 25 ° to 45 °, can make and form a less angle between the notch both ends of the surface of each groove, the magnetic field that coil on the stator is produced is comparatively steady, be conducive to the smooth and easy rotation of rotor, the noise that produces when reducing the motor operation.
For realizing the 3rd purpose of the present utility model, the motor that the utility model provides has stator and is sleeved on the outer rotor of stator, stator has stator core and is wrapped in coil on the stator core, stator core is overrided to form by the multi-disc stator punching, each stator punching has circular yoke portion, and be provided with from yoke portion along the outward extending a plurality of teeth of stator punching radial direction, form groove between two adjacent teeth, and the middle part of stator punching is provided with interior circular hole, wherein, the angle that the tooth top two side ends line of each tooth forms is acute angle, and acute angle is between 25 ° to 45 °.
By such scheme as seen, the tooth top both sides end line of each tooth of stator punching is designed to have the angle of certain angle, the coil that is conducive to be wrapped on the stator core produces stable magnetic field, and rotor is rotated smoothly, the noise that produces when reducing the motor operation.
Description of drawings
Fig. 1 is the cutaway view of existing motor.
Fig. 2 is the structure enlarged drawing of existing stator punching.
Fig. 3 is the structure chart of the utility model stator punching embodiment.
Fig. 4 is the structure enlarged drawing of tooth among the utility model stator punching embodiment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
Motor of the present utility model has housing and is positioned at the housing end covers at two sides, and housing and end cap surround a cavity, and stator and rotor are installed in the cavity.The motor of present embodiment is external rotor electric machine, and namely stator is positioned at the middle part of motor, and rotor is sleeved on outside the stator, and the middle part of stator is provided with axis hole.Armature spindle is installed in the middle part of rotor, and armature spindle can pass the outside outputting power of axis hole.
Stator has stator core and is wrapped in coil on the stator core, and stator core is overrided to form by the identical stator punching of multi-disc shape.Referring to Fig. 3, the stator punching of present embodiment 30 is stamped to form by silicon steel sheet, and it roughly is circular, and is provided with circular yoke portion 31, and the middle part of yoke portion 31 is provided with interior circular hole 34.After multi-disc stator punching 30 laminates and forms stator core, the interior circular hole 34 of stator punching 30 will form the axis hole of stator core.
Be provided with a plurality of teeth 32 outside yoke portion 31, each tooth 32 is all from yoke portion 31 extending radially outwardly along stator punching 30.Form a groove 33 between two adjacent teeth 32.In the present embodiment, stator punching 30 comprises 12 teeth 32, therefore comprise that also 12 grooves 33, each groove 33 have towards stator punching 30 outer peripheral notches, and the width of rebate L1 of groove 33 is between 1.5 millimeters to 2.3 millimeters.
Referring to Fig. 4, each tooth 32 constitutes by being positioned at stator punching 30 outer peripheral tooth tops 41 and connection tooth top 41 tooth root 48 with yoke portion 31, and tooth top 41 along the circumferential both sides length of stator punching 30 greater than tooth root 48 along the circumferential both sides length of stator punching 30, so each tooth 32 roughly is the T type.
Two following end lines 46,47 of tooth top 41 are on same straight line, and end line 46,47 can design the mould of punching press stator punching 30 so easily all perpendicular to two sides 49,50 of tooth root 48 down, and the production of stator punching 30 is simple, convenient.
Between the side 49 of the following end line 46 of tooth top 41 and tooth root 48, be connected with rounded corner 51, between the side 50 of the following end line 47 of tooth top 41 and tooth root 48, be connected with rounded corner 52, and rounded corner 51,52 radius are between 1 millimeter to 2 millimeters.By design rounded corner 51,52, the enamelled wire that can avoid being wrapped in the coil on the stator core is scraped the damage enamelled coating by groove 33 inwalls, thereby guarantees the safety in utilization of enamelled wire, is conducive to guarantee the performance of coil, and the accident of electric leakage takes place when avoiding the motor operation.
On tooth root 48, also be provided with a buckling piece 35, stator punching 30 being laminated when forming stator core, with buckling piece 35 alignment on each stator punching 30, thereby realize location between a plurality of stator punchings 30.
Certainly, above-described embodiment only be the utility model preferred embodiment, during practical application more change can be arranged, for example, determine the corner dimension between the tooth top both sides end line of each tooth according to the quantity of stator punching tooth; Perhaps the position with buckling piece is arranged on yoke portion etc., and such change also can realize the purpose of this utility model.
It is emphasized that at last the utility model is not limited to above-mentioned execution mode, as the angle between the end line of tooth top both sides in setting range, change, the variations such as change of width of rebate also should be included in the protection range of the utility model claim.
Claims (10)
1. stator punching comprises
Circular yoke portion, and be provided with from described yoke portion along the outward extending a plurality of teeth of stator punching radial direction, groove formed between two adjacent described teeth, and the middle part of stator punching is provided with interior circular hole;
It is characterized in that:
The angle that the tooth top two side ends line of each described tooth forms is acute angle, and described acute angle is between 25 ° to 45 °.
2. stator punching according to claim 1 is characterized in that:
The following end line of described tooth top is vertical with the tooth root side of described tooth.
3. stator punching according to claim 2 is characterized in that:
Be provided with rounded corner between the side of described end line down and described tooth root.
4. according to each described stator punching of claim 1 to 3, it is characterized in that:
The width of rebate of described groove is between 1.5 millimeters to 2.3 millimeters.
5. stator core is overrided to form by the multi-disc stator punching, and each described stator punching comprises
Circular yoke portion, and be provided with from described yoke portion along the outward extending a plurality of teeth of stator punching radial direction, groove formed between two adjacent described teeth, and the middle part of stator punching is provided with interior circular hole;
It is characterized in that:
The angle that the tooth top two side ends line of each described tooth forms is acute angle, and described acute angle is between 25 ° to 45 °.
6. stator core according to claim 5 is characterized in that:
The following end line of described tooth top is vertical with the tooth root side of described tooth.
7. stator core according to claim 6 is characterized in that:
Be provided with rounded corner between the side of described end line down and described tooth root.
8. motor comprises
Stator and be sleeved on the outer rotor of described stator, described stator has stator core and is wrapped in coil on the described stator core, described stator core is overrided to form by the multi-disc stator punching, each described stator punching has circular yoke portion, and be provided with from described yoke portion along the outward extending a plurality of teeth of stator punching radial direction, form groove between two adjacent described teeth, and the middle part of stator punching is provided with interior circular hole;
It is characterized in that:
The angle that the tooth top two side ends line of each described tooth forms is acute angle, and described acute angle is between 25 ° to 45 °.
9. motor according to claim 8 is characterized in that:
The following end line of described tooth top is vertical with the tooth root side of described tooth.
10. motor according to claim 9 is characterized in that:
Be provided with rounded corner between the side of described end line down and described tooth root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098231 CN203219001U (en) | 2013-03-04 | 2013-03-04 | Stator punching sheet, stator iron core and electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098231 CN203219001U (en) | 2013-03-04 | 2013-03-04 | Stator punching sheet, stator iron core and electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203219001U true CN203219001U (en) | 2013-09-25 |
Family
ID=49208503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320098231 Expired - Fee Related CN203219001U (en) | 2013-03-04 | 2013-03-04 | Stator punching sheet, stator iron core and electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203219001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974603A (en) * | 2019-12-06 | 2020-04-10 | 宿州学院 | Angle sensing system of exoskeleton device for lower limb rehabilitation training |
| CN114256998A (en) * | 2021-11-18 | 2022-03-29 | 岚图汽车科技有限公司 | Stator punching sheet, stator core, motor and vehicle |
-
2013
- 2013-03-04 CN CN 201320098231 patent/CN203219001U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974603A (en) * | 2019-12-06 | 2020-04-10 | 宿州学院 | Angle sensing system of exoskeleton device for lower limb rehabilitation training |
| CN114256998A (en) * | 2021-11-18 | 2022-03-29 | 岚图汽车科技有限公司 | Stator punching sheet, stator core, motor and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20210304 |