CN202475214U - Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring - Google Patents
Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring Download PDFInfo
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- CN202475214U CN202475214U CN201220133474XU CN201220133474U CN202475214U CN 202475214 U CN202475214 U CN 202475214U CN 201220133474X U CN201220133474X U CN 201220133474XU CN 201220133474 U CN201220133474 U CN 201220133474U CN 202475214 U CN202475214 U CN 202475214U
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- magnet ring
- magnetic ring
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Abstract
A permanent magnetic DC brushless motor with a reverse mounting preventing magnetic ring relates to a permanent magnetic motor. A common magnetic ring is easily reversely mounted; and when in reverse mounting, a signal provided by a coder is inaccurate, and further the motor cannot normally operate. The permanent magnetic DC brushless motor is characterized in that a waist-shaped hole formed by two parallel straight sides and symmetrical arc sides connecting the two parallel straight sides is formed at the middle part of the magnetic ring, and a rotary shaft is equipped with a waist-shaped shaft section matched with the waist-shaped hole on the magnetic ring; taken the central line of the waist-shaped hole as a boundary, the magnetic ring is divided into four polar regions, i.e. a left upper region, a right upper region, a right lower region and a left lower region, a magnetic pole is arranged in each polar region, the magnetic poles of the four polar regions are alternately distributed; and the position of a magnet, the positions of the magnetic poles and the magnetic ring, and the magnetic poles are in correspondence. According to the utility model, the N and S polarity and the structure of the magnetic ring are optimized and combined, no matter the magnetic ring is reversely or positively mounted, the polarity of rotor magnetic steel can accurately correspond to the magnetic ring, so that the magnetic ring can be quickly and accurately mounted, and fault rate of the motor is lowered.
Description
Technical field
The utility model relates to a kind of magneto.
Background technology
Non-brush permanent-magnet DC motor generally all needs an encoder to feed back the position of rotor magnetic pole, and utilizing Hall that signal feedback is carried out in the induction in magnetic field is a kind of mode commonly used.And this mode generally all needs an identical magnet ring with rotor magnetic pole and Hall to respond to feedback signal; Therefore the mode that magnetizes of magnet ring be mounted for a very crucial link, common magnet ring installation direction all need be fixed to guarantee corresponding with rotor upper magnetic steel magnetic pole.The greatest drawback that exists is that mistake can appear in the signal that encoder provided, thereby causes motor normally not move when magnet ring direction dress inverse time.
The utility model content
The technical problem that the utility model will solve and the technical assignment of proposition are that the prior art scheme is improved and improved, and a kind of non-brush permanent-magnet DC motor with counnter attack dress magnet ring is provided, to reach the correct purpose of installing of magnet ring.For this reason, the utility model is taked following technical scheme.
A kind of non-brush permanent-magnet DC motor with counnter attack dress magnet ring; Comprise rotor, be located at rotor end-face magnet, relative with magnet be located at the magnet ring on the rotor shaft; It is characterized in that: magnet ring middle part is established by two parallel straight edges and is connected the mounting hole that the symmetrical circular arc limit of two straight flanges constitutes, and rotating shaft is provided with the waist oblique crank Z section that matches with the magnet ring mounting hole; Described magnet ring is that the boundary is divided into four polar regions with the mounting hole center line; Be respectively upper left district, upper right district, bottom right district and left inferior segment; A magnetic pole is established in each polar region, and the magnetic pole on four polar regions alternately distributes, and the position of magnet, magnetic pole are corresponding with position, four polar regions, the magnetic pole of magnet ring.Two polar regions at diagonal angle are homopolarity, and adjacent polar region is a heteropole, and the present technique scheme has been carried out optimum organization to the structure of N, S polarity and the magnet ring of magnet ring, no matter are that install in the front or the reverse side installation all can be correct corresponding mutually with rotor magnetic steel polarity thereby reach when magnet ring is installed.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.
Described waist oblique crank Z section is established draw-in groove, the waist oblique crank Z section in the magnet ring outside successively socket packing ring, ripple bullet, packing ring and the jump ring that matches with draw-in groove to realize the axial location of magnet ring on the shaft shoulder that magnet ring is pressed on rotating shaft.
Beneficial effect: technical scheme has been carried out optimum organization to the structure of N, S polarity and the magnet ring of magnet ring; Thereby no matter reach when magnet ring is installed is that install in the front or the reverse side installation all can be correct corresponding mutually with rotor magnetic steel polarity; Magnet ring can be installed fast, correct, reduce the failure rate of motor.
Description of drawings
Fig. 1 is the utility model explosion structural representation.
Among the figure: 1, rotor; 2, packing ring; 3, magnet ring; 4, ripple bullet; 5, jump ring; 6, rotating shaft; 7, magnet.
Embodiment
Below in conjunction with Figure of description the technical scheme of the utility model is done further detailed description.
As shown in Figure 1; The utility model comprises rotor 1, is located at the magnet 7 of rotor 1 end face, relative with magnet 7 be located at the magnet ring 3 in rotor 1 rotating shaft 6; Magnet ring 3 middle parts are established by two parallel straight edges and are connected the mounting hole that the symmetrical circular arc limit of two straight flanges constitutes, and rotating shaft 6 is provided with the waist oblique crank Z section that matches with magnet ring 3 mounting holes; Described magnet ring 3 is that the boundary is divided into four polar regions with the mounting hole center line; Be respectively upper left district, upper right district, bottom right district and left inferior segment; A magnetic pole is established in each polar region, and the magnetic pole on four polar regions alternately distributes, and the position of magnet 7, magnetic pole are corresponding with position, four polar regions, the magnetic pole of magnet ring 3.Described waist oblique crank Z section is established draw-in groove, the waist oblique crank Z section in magnet ring 3 outsides successively socket packing ring 2, ripple bullet 4, packing ring 2 and the jump ring 5 that matches with draw-in groove to realize the axial location of magnet ring 3 on the shaft shoulder that magnet ring 3 is pressed on rotating shaft 6.
In the present embodiment, it is magnet 7 that magnet steel is housed on the rotor, and magnet steel polarity N, S on circumference alternately arrange, and distribute symmetrically, be provided with in the rear end of rotor 1 rotating shaft 6 specified diameter that matches with magnet ring 3 cylinder and two given sizes mill flat.To mill flat is reference, and the magnet steel polarity of rotor 1 is boundary with the normal direction that the axial line through rotor 1 mills flat horizontal surface, and upper left limit is that N polarity magnet steel top right-hand side is a S polarity magnet steel.The design of magnet ring 3 is corresponding with the magnet steel polarity on the rotor 1; At first N is pressed in the distribution of the polarity of magnet ring on circumference, S alternately evenly distributes; Also being provided with corresponding installation on the magnet ring 3 mills flat; With on the magnet ring 3 to mill flat be reference, magnet ring 3 polarity are to be boundary through the axial line of magnet ring 3 and the flat normal direction of milling on the magnet ring 3, upper left limit is that N polarity top right-hand side is a S polarity.Magnetic direction from get into the surface be defined as the S direction pass the surface for the N direction; This polarity of the magnetic field distribution mode of magnet ring 3 is adorned inverse time at assembly direction like this; Former upper left N polarity becomes top-right S polarity; Former top-right S polarity becomes upper left N polarity and just meets desirable polar requirement, promptly with through magnet ring 3 axial lines and mill flat normal direction serve as when boundary the upper left side be always N polarity, the upper right side is always the requirement of S polarity.
During assembling: magnet ring 3 is inserted in rotor 1 rear end and to mill flat location; The outside that then packing ring 2 is placed on magnet ring 3 is set to the rear end of rotor 1; Again ripple bullet 4 is placed on the rear end that packing ring 2 outsides are set to rotor 1; Then again second packing ring 2 being placed on ripple bullet 4 outsides is set to rotor 1 rear end; Snap in the draw-in groove of rotor 1 rear end with jump ring 5 with axle at last, magnet ring 3 grades are fixed on the rotor 1.
More than a kind of non-brush permanent-magnet DC motor shown in Figure 1 with counnter attack dress magnet ring be the specific embodiment of the utility model; The utility model substantive distinguishing features and progress have been embodied; Can be according to the use needs of reality; Under the enlightenment of the utility model, it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection range of this programme.
Claims (2)
1. non-brush permanent-magnet DC motor with counnter attack dress magnet ring; Comprise rotor (1), be located at rotor (1) end face magnet (7), relative with magnet (7) be located at the magnet ring (3) in rotor (1) rotating shaft (6); It is characterized in that: magnet ring (3) middle part is established by two parallel straight edges and is connected the mounting hole that the symmetrical circular arc limit of two straight flanges constitutes, and rotating shaft (6) is provided with the waist oblique crank Z section that matches with magnet ring (3) mounting hole; Described magnet ring (3) is that the boundary is divided into four polar regions with the mounting hole center line, is respectively upper left district, upper right district, bottom right district and left inferior segment, and a magnetic pole is established in each polar region, and the magnetic pole on four polar regions alternately distributes; The position of magnet (7), magnetic pole are corresponding with position, four polar regions, the magnetic pole of magnet ring (3).
2. a kind of non-brush permanent-magnet DC motor according to claim 1 with counnter attack dress magnet ring; It is characterized in that: described waist oblique crank Z section is established draw-in groove, the waist oblique crank Z section in magnet ring (3) outside successively socket packing ring (2), ripple bullet (4), packing ring (2) and the jump ring (5) that matches with draw-in groove to realize the axial location of magnet ring (3) on the shaft shoulder that magnet ring (3) is pressed on rotating shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220133474XU CN202475214U (en) | 2012-03-31 | 2012-03-31 | Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220133474XU CN202475214U (en) | 2012-03-31 | 2012-03-31 | Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475214U true CN202475214U (en) | 2012-10-03 |
Family
ID=46923337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220133474XU Expired - Lifetime CN202475214U (en) | 2012-03-31 | 2012-03-31 | Permanent magnetic DC brushless motor with reverse mounting preventing magnetic ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855828A (en) * | 2014-03-03 | 2014-06-11 | 常州奥立思特电子有限公司 | Permanent-magnet direct-current brushless motor rotor structure |
-
2012
- 2012-03-31 CN CN201220133474XU patent/CN202475214U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855828A (en) * | 2014-03-03 | 2014-06-11 | 常州奥立思特电子有限公司 | Permanent-magnet direct-current brushless motor rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Patentee after: Wolong Electric Drive Group Co., Ltd. Address before: 312300 No. 1801 Renmin West Road, Shaoxing, Zhejiang, Shangyu Patentee before: Wolong Electric Group Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |