CN100385770C - Stator device for motor - Google Patents
Stator device for motor Download PDFInfo
- Publication number
- CN100385770C CN100385770C CNB2004100621709A CN200410062170A CN100385770C CN 100385770 C CN100385770 C CN 100385770C CN B2004100621709 A CNB2004100621709 A CN B2004100621709A CN 200410062170 A CN200410062170 A CN 200410062170A CN 100385770 C CN100385770 C CN 100385770C
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- silicon steel
- steel sheet
- motor
- utmost point
- tooth portion
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Abstract
The present invention provides a stator device for a motor. The present invention is formed by stacking at least one first silicon steel sheet and at least one second silicon steel sheet. The first silicon steel sheet and the second silicon steel sheet are respectively provided with a plurality of pole arms. One end of the pole arm forms a pole tooth part. The pole tooth part is perpendicular to the extrusion direction of the pole arm and is symmetrically formed with a first end side and a second end side. The first end side of the pole tooth part of the second silicon steel sheet is formed with a chamfering, which leads a motor rotor to deviate to the second end side corresponding to a magnetic center of the pole tooth part. The present invention easily forms the starting deviation, a starting deviation angle can be elastically adjusted in a simple mode, and simultaneously, the efficiency of a motor can be ensured.
Description
[technical field]
The invention relates to a kind of stator apparatus of motor, relevant especially a kind of stator apparatus that is easy to form the motor that starts off normal.
[background technology]
Known single-phase or two-phase DC Brushless Motor is easy to starting for making rotor, and the magnetic action face that can manage to change silicon steel sheet to be to produce uneven magnetic force, uses rotation dead angle (dead angle) problem when forming the starting off normal and avoiding rotor starting.
Fig. 1 is a schematic diagram, shows the conventional approaches that forms d.c. motor starting off normal.As shown in Figure 1, two distolaterally wherein one distolaterally have a tangent plane about the utmost point tooth portion 104 of stator 100, make utmost point tooth portion 104 have the distolateral spacing d with rotor 102 greater than another of the space D of distolateral and rotor 102 of tangent plane.So 102 magnetic force that produce inequality because of magnetic resistance is different in utmost point tooth portion 104 both sides and rotor use forming the starting off normal.As shown in Figure 2, conventional approaches is except that producing the tangent plane as Fig. 2 (a), also can adopt as Fig. 2 (b) and produce cambered surface or Fig. 2 (c) manufacturing section difference face mode that does not wait both sides, make utmost point tooth portion 104 both end sides and rotor 102 spacings produce difference, reach the purpose that off normal is started in formation.
Yet, no matter form tangent plane, do not wait cambered surface or section difference face, the mode of known formation starting off normal all can make the spacing increase of magnetic action face with the rotor 102 of stator 100, so magnetic action face and the induction between the permanent magnet (not shown) on the rotor 102 of stator 100 obviously reduces (because of magneticaction and square distance are inversely proportional to) behind the energization excitation, causes the reduction of motor torsion.When if the control of this spacing is not good, as easy as rolling off a logly cause the starting control of motor bad again.
Moreover when if this starting off normal angle needs to adjust according to rotating speed, load or starting voltage, conventional approaches can't the elasticity adjustment and need die sinking again to produce the silicon steel sheet with different spacing again, significantly increases manufacturing cost and time.
[summary of the invention]
Therefore, the object of the present invention is to provide a kind of stator apparatus that is easy to form the motor that starts off normal, it can guarantee moyor simultaneously with plain mode elasticity adjustment starting off normal angle, and the problem that can avoid known starting off normal designing institute to cause fully.
Based on above-mentioned purpose, the invention provides a kind of stator apparatus of motor, it is characterized in that: be to pile up by at least one first silicon steel sheet and at least one second silicon steel sheet to form, this first, second silicon steel sheet respectively has several polar arms, form utmost point tooth portion in this polar arm one end, and vertical this polar arm bearing of trend of this utmost point tooth portion and be symmetrically formed one first distolateral and one second distolateral; First distolateral formation one rescinded angle of this utmost point tooth portion of this second silicon steel sheet, it relatively is partial to that this is second distolateral in a magnetic center of the utmost point tooth portion of this second silicon steel sheet to make motor rotor.
The stator apparatus of described motor is characterized in that: the section of this second silicon steel sheet rescinded angle is parallel with the polar arm bearing of trend of this second silicon steel sheet.
The stator apparatus of described motor is characterized in that: this second silicon steel sheet that is formed with this rescinded angle is an adjacent stacked in twos.
The stator apparatus of described motor, it is characterized in that: this first silicon steel sheet and this second silicon steel sheet stack together, the second silicon steel sheet quantity that wherein is different from Lower Half along the second silicon steel sheet quantity of the stacking direction first half is to form an axial magnetic amount of pressure to this motor rotor.
The stator apparatus of described motor is characterized in that: this motor stator device relatively magnetic action face of this motor rotor is that outer peripheral edges by this first silicon steel sheet and this second silicon steel sheet are constituted.
The present invention also provides a kind of stator apparatus of motor, it is characterized in that: be to be piled up by several silicon steel sheets to form, this silicon steel sheet respectively has several polar arms, form utmost point tooth portion in this polar arm one end, and respectively its center of this silicon steel sheet is identical to the distance of these utmost point tooth portion outer peripheral edges; Wherein this utmost point tooth portion one distolateral rescinded angle that is formed with of this silicon steel sheet of part, and these several silicon steel sheets is piled up together along the polar arm centerline direction, so that this utmost point tooth portion vertically is divided into two halfs, the magnetic action face area of this halves does not wait.
The stator apparatus of described motor is characterized in that: the section of this silicon steel sheet rescinded angle is parallel with this polar arm bearing of trend.
The stator apparatus of described motor is characterized in that: this part silicon steel sheet that is formed with this rescinded angle is an adjacent stacks in twos.
The stator apparatus of described motor is characterized in that: along stacking direction, wherein the silicon steel sheet quantity with rescinded angle in the first half is different from the silicon steel sheet quantity with rescinded angle in the Lower Half, this motor rotor is formed an axial magnetic amount of pressure.
The present invention also provides a kind of stator apparatus of motor, is formed by at least one silicon steel sheet, and this silicon steel sheet has polar arm, forms utmost point tooth portion at polar arm one end, and these utmost point tooth portion outer peripheral edges are identical with the centre distance of this motor stator, it is characterized in that:
One of at least one utmost point tooth portion of this at least one silicon steel sheet distolaterally is formed with at least one rescinded angle, at least one breach or at least one perforation.
The stator apparatus of motor of the present invention because of its utmost point tooth portion outer peripheral edges of each silicon steel sheet are identical to the distance at silicon steel sheet center, so its each silicon steel sheet of the stator structure after piling up can keep identical little gap with rotor, and can produce big torsion and promote moyor.
Moreover, because of the present invention utilizes two groups of silicon steel sheets to pile up stator apparatus, and these two groups of silicon steel sheets are to be designed to difference having or not in rescinded angle only in advance, therefore when the starting attitude angle needs according to rotating speed, load or starting voltage adjustment, the present invention only needs to adjust the quantity of first silicon steel sheet and second silicon steel sheet when piling up, the magnetic action area that can change halves immediately reaches the purpose of the elasticity adjustment starting attitude angle, the effect that obviously can obtain to save manufacturing cost and time; And when design makes second silicon steel sheet with rescinded angle in along the quantity in the stacking direction first half and quantity in Lower Half not simultaneously, can make its first half of stator structure after piling up and Lower Half that the magnetic force of rotor is produced difference, and can to rotor produce one along motor drive shaft to magnetic pressure strength, the axial dipole field when reducing rotor rotation.
[description of drawings]
Fig. 1 is a schematic diagram, shows the conventional approaches that forms d.c. motor starting off normal.
Fig. 2 (a), 2 (b), 2 (c) are shown in the known starting off normal generation type schematic diagram that utmost point tooth portion produces tangent plane, cambered surface or section difference face respectively.
Fig. 3 (a) and 3 (b) are schematic perspective view, show two groups of silicon steel sheet members that constitute motor stator structure of the present invention.
Fig. 4 is a schematic perspective view, shows the motor stator structure that stacks formation according to first silicon steel sheet of the present invention and second silicon steel sheet.
Fig. 5 is for along the cross-section profile that gets of the A-A line of Fig. 4.
Fig. 6 (a), 6 (b) are schematic diagram, show that silicon steel sheet of the present invention stacks the variation example of mode.
Fig. 7 changes the schematic perspective view of example for showing one of the present invention's second silicon steel sheet.
Fig. 8 is the schematic perspective view of another embodiment of demonstration the present invention second silicon steel sheet.
[embodiment]
Fig. 3 (a) and Fig. 3 (b) are schematic perspective view, show two groups of silicon steel sheet members of the stator apparatus that constitutes motor of the present invention.According to motor stator structure of the present invention, be to stack by as shown in the figure first silicon steel sheet 10 and second silicon steel sheet 20 to form.Silicon steel sheet 10 is provided with a centre bore 12, four polar arms 14 that radially are provided with into the radiation-like extension of this centre bore 12 are in order to allow coil (not shown) twine thereon, and in polar arm 14 terminals all utmost point tooth portions 16 to formation expansion in vertical its bearing of trend, the outer peripheral edges 18 of utmost point tooth portion 16 promptly constitute the magnetic action face with the rotor induction.
Second silicon steel sheet 20 has centre bore 22, four polar arms 24 equally, in the utmost point tooth portion 26 of tangential formation, its shape and its center identical with the first silicon steel sheet 10 to the utmost point distance R of tooth portion outer peripheral edges 28 also is designed to identical with first silicon steel sheet.The difference of two groups of silicon steel sheets is among the distolateral 26a and distolateral 26b that its utmost point tooth portion 26 vertical polar arm 24 bearing of trends of second silicon steel sheet are symmetrically formed, is formed with a rescinded angle in one distolateral (being illustrated as distolateral 26a) wherein.
In this embodiment, its section of rescinded angle on the distolateral 26a of utmost point tooth portion is parallel with the bearing of trend of polar arm 24, so that form, the rescinded angle size does not limit simultaneously, and visual actual needs elasticity is adjusted.Moreover though the number of polar arm 14 and 24 is illustrated as four, its number is looked the variation of motor number of poles fully and is not limited.
Fig. 4 is a schematic perspective view, shows the motor stator structure 30 that stacks formation according to first silicon steel sheet 10 of the present invention and second silicon steel sheet 20.
As shown in Figure 4, according to the motor stator structure 30 of present embodiment, be to adopt aforementioned two groups of silicon steel sheets of design in advance, two second silicon steel sheets 20 with rescinded angle are stacked on two first silicon steel sheets 10 of not having a rescinded angle, be wound on the polar arm with coil 34 again and form.After two groups of silicon steel sheets stacked together, the utmost point tooth portion outer peripheral edges 38 of each silicon steel sheet coincided and form one and produce the interactive magnetic action face of magnetic with rotor.Fig. 5 is for along the cross-section profile that gets of the A-A line of Fig. 4, please refer to Fig. 5, when the halves that vertically is divided into along the utmost point tooth portion of motor drive shaft after will stacking by polar arm center line P, the magnetic action area of left side I has the magnetic action area of rescinded angle less than right-hand part II because of second silicon steel sheet 20, therefore the magnetic center of rotor 32 can be as shown in Figure 4, by polar arm center line bearing of trend (P direction) relatively this utmost point tooth portion 36 be offset to the Q direction towards the bigger right-hand part II of magnetic action area (promptly do not have the distolateral of rescinded angle), to reach the magnetic circuit balance, start attitude angle θ and form one.
Therefore, by design of the present invention, because of its utmost point tooth portion 36 outer peripheral edges 38 of each silicon steel sheet are all identical to the distance at silicon steel sheet center,, and can produce big torsion and promote moyor so its each silicon steel sheet of the stator structure after stacking can keep identical little gap with rotor.
Moreover, because of the present invention utilizes two groups of silicon steel sheets to stack out stator structure, and these two groups of silicon steel sheets are to be designed to difference having or not in rescinded angle only in advance, therefore when starting attitude angle θ needs according to rotating speed, load or starting voltage adjustment, the present invention only needs to adjust the quantity of first silicon steel sheet 10 and second silicon steel sheet 20 when stacking, the magnetic action area that can change left side I and right-hand part II immediately comes elasticity adjustment starting attitude angle θ, do not need fully as the known techniques, the silicon steel sheet that needs die sinking again to make the tool different spacing is in addition adjusted starting attitude angle θ.So according to design of the present invention, the dark tool elasticity and the effect that obviously can obtain to save manufacturing cost and time when adjusting starting attitude angle size.
Moreover, silicon steel sheet as shown in Figure 5 stacks mode, because of making first silicon steel sheet 10 stack second silicon steel sheet 20 that has a rescinded angle in Lower Half, design stacks at the first half, so the bottom of the motor stator structure after stacking is big to the magnetic force of rotor than the top, and can to rotor produce one along motor drive shaft to downward magnetic pressure strength, reduce the issuable axial displacement of rotor.That is, because of the present invention utilizes two groups of silicon steel sheets to stack out stator structure, and these two groups of silicon steel sheets are to be designed to difference having or not in rescinded angle only in advance, when second silicon steel sheet with rescinded angle in along stacking quantity in the direction first half and the quantity in the Lower Half not simultaneously, can make its first half of stator structure after stacking and Lower Half that the magnetic force of rotor is produced difference, and can to rotor produce one along motor drive shaft to magnetic pressure strength, the axial dipole field when reducing rotor rotation.
According to design of the present invention, the indivedual numbers and the mode that stacks of two groups of silicon steel sheets do not limit fully, only need to reach when vertically dividing equally utmost point tooth portion after stacking by polar arm center line P, the magnetic action area of its left side I and right-hand part II does not wait to produce the effect of starting the attitude angle and gets final product.As shown in Figure 6, for example can will be with second silicon steel sheet 20 of tool rescinded angle disposed adjacent in twos as figure (a), or as scheme shown in (b) second silicon steel sheet 20 and first silicon steel sheet 10 is interconnected all can.
Fig. 7 changes the schematic perspective view of example for showing one of the present invention's second silicon steel sheet.As shown in Figure 7, motor stator structure of the present invention also can be stacked by first silicon steel sheet 10 and second silicon steel sheet 40 and form.Second silicon steel sheet 40 and first silicon steel sheet 10 have centre bore 42, four polar arms 44 equally, in the utmost point tooth portion 46 of tangential formation, its shape and the center to the utmost point distance R of tooth portion outer peripheral edges all are designed to identical with first silicon steel sheet 10.The difference of two groups of silicon steel sheets is silicon steel sheet 40 its utmost point tooth portion 46 1 distolateral formation one breach 48 and makes this distolateral surface generation segment difference section branch vertically.Therefore, when utilizing two groups of silicon steel sheets to stack out stator structure, when stacking, adjust the quantity of first silicon steel sheet 10 and second silicon steel sheet 40, can acquire change equally stator structure its left side I that stacks out and the different effect of the present invention of magnetic action area of right-hand part II reach the purpose of elasticity adjustment starting attitude angle θ.Moreover, also can second silicon steel sheet 50 be designed to run through one of magnetic action face in a distolateral formation of its utmost point tooth portion 56 bore a hole 58 as shown in Figure 8, can reach the effect of the magnetic action area of adjusting utmost point tooth portion 56 outer peripheral edges left and right sides both end sides equally.
That is, the present invention is under the design premises that to the utmost point distance R of tooth portion outer peripheral edges is all identical of two groups of its centers of silicon steel sheet, in wherein a distolateral formation rescinded angle, breach, perforation or other like configurations of one group of silicon steel sheet, all can obtain to adjust the effect of the magnetic action area of this silicon steel sheet left and right sides both end sides.So when utilizing these two groups of silicon steel sheets to stack out stator structure, can reach easily the magnetic action area that makes its left side of stator structure that stacks out and right-hand part do not wait, keep simultaneously with rotor between the purpose in identical gap.Certainly, the position and the quantity of this rescinded angle, breach, perforation structure do not limit, and visual actual demand is changed.
The above only is an illustrative, but not for the restriction protection scope of the present invention, any equivalent modifications of carrying out or change according to the present invention, all should be contained in protection scope of the present invention in.
Claims (10)
1. the stator apparatus of a motor, it is characterized in that: be to pile up by at least one first silicon steel sheet and at least one second silicon steel sheet to form, this first, second silicon steel sheet respectively has several polar arms, form utmost point tooth portion in this polar arm one end, and vertical this polar arm bearing of trend of this utmost point tooth portion and be symmetrically formed one first distolateral and one second distolateral; First distolateral formation one rescinded angle of this utmost point tooth portion of this second silicon steel sheet, it relatively is partial to that this is second distolateral in a magnetic center of the utmost point tooth portion of this second silicon steel sheet to make motor rotor.
2. the stator apparatus of motor as claimed in claim 1, it is characterized in that: the section of this second silicon steel sheet rescinded angle is parallel with the polar arm bearing of trend of this second silicon steel sheet.
3. the stator apparatus of motor as claimed in claim 1 is characterized in that: this second silicon steel sheet that is formed with this rescinded angle is an adjacent stacks in twos.
4. the stator apparatus of motor as claimed in claim 1, it is characterized in that: this first silicon steel sheet and this second silicon steel sheet are stacked, the second silicon steel sheet quantity that wherein is different from Lower Half along the second silicon steel sheet quantity of the stacking direction first half is to form an axial magnetic amount of pressure to this motor rotor.
5. the stator apparatus of motor as claimed in claim 1 is characterized in that: this motor stator device magnetic action face of this motor rotor relatively is that outer peripheral edges by this first silicon steel sheet and this second silicon steel sheet are constituted.
6. the stator apparatus of a motor, it is characterized in that: be to be piled up by several silicon steel sheets to form, this silicon steel sheet respectively has several polar arms, form utmost point tooth portion in this polar arm one end, and respectively its center of this silicon steel sheet is identical to the distance of these utmost point tooth portion outer peripheral edges; Wherein this utmost point tooth portion one distolateral rescinded angle that is formed with of this silicon steel sheet of part, and these several silicon steel sheets is piled up together along the polar arm centerline direction, so that this utmost point tooth portion vertically is divided into two halfs, the magnetic action face area of this halves does not wait.
7. the stator apparatus of motor as claimed in claim 6, it is characterized in that: the section of this silicon steel sheet rescinded angle is parallel with this polar arm bearing of trend.
8. the stator apparatus of motor as claimed in claim 6 is characterized in that: this part silicon steel sheet that is formed with this rescinded angle is an adjacent stacks in twos.
9. the stator apparatus of motor as claimed in claim 6, it is characterized in that: along stacking direction, wherein the silicon steel sheet quantity with rescinded angle in the first half is different from the silicon steel sheet quantity with rescinded angle in the Lower Half, this motor rotor is formed an axial magnetic amount of pressure.
10. the stator apparatus of a motor is formed by at least one silicon steel sheet, and this silicon steel sheet has polar arm, forms utmost point tooth portion at polar arm one end, and these utmost point tooth portion outer peripheral edges are identical with the centre distance of this motor stator, it is characterized in that:
One of at least one utmost point tooth portion of this at least one silicon steel sheet distolaterally is formed with at least one rescinded angle, at least one breach or at least one perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100621709A CN100385770C (en) | 2004-07-06 | 2004-07-06 | Stator device for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100621709A CN100385770C (en) | 2004-07-06 | 2004-07-06 | Stator device for motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1719689A CN1719689A (en) | 2006-01-11 |
| CN100385770C true CN100385770C (en) | 2008-04-30 |
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ID=35931456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100621709A Expired - Fee Related CN100385770C (en) | 2004-07-06 | 2004-07-06 | Stator device for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100385770C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW508892B (en) * | 2000-09-15 | 2002-11-01 | Jiun-Fu Shiu | Combination type motor stator structure |
| CN1459909A (en) * | 2002-05-22 | 2003-12-03 | 许俊甫 | Single arm teeth embraced stator structure |
| JP2004187478A (en) * | 2002-10-09 | 2004-07-02 | Asmo Co Ltd | Process for producing core and core sheet, and process for manufacturing stator |
-
2004
- 2004-07-06 CN CNB2004100621709A patent/CN100385770C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW508892B (en) * | 2000-09-15 | 2002-11-01 | Jiun-Fu Shiu | Combination type motor stator structure |
| CN1459909A (en) * | 2002-05-22 | 2003-12-03 | 许俊甫 | Single arm teeth embraced stator structure |
| JP2004187478A (en) * | 2002-10-09 | 2004-07-02 | Asmo Co Ltd | Process for producing core and core sheet, and process for manufacturing stator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1719689A (en) | 2006-01-11 |
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Granted publication date: 20080430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |