CN103138415A - Multipole magnetic ring - Google Patents
Multipole magnetic ring Download PDFInfo
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- CN103138415A CN103138415A CN 201110383665 CN201110383665A CN103138415A CN 103138415 A CN103138415 A CN 103138415A CN 201110383665 CN201110383665 CN 201110383665 CN 201110383665 A CN201110383665 A CN 201110383665A CN 103138415 A CN103138415 A CN 103138415A
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- magnetic
- magnetic ring
- ring body
- sections
- circular holes
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Abstract
The invention relates to the technical field of micromotors, in particular to a multipole magnetic ring. The multipole magnetic ring comprises a magnetic ring body and at least two pairs of circular arc-shaped magnetic sections, wherein the magnetic ring body has an integral structure which is made of magnetic materials by injection molding, the magnetic sections are embedded inside the magnetic ring body, and the magnetic sections are arranged evenly inside the magnetic ring body according to mutually-reversed polarities. A first step is arranged on one side, facing towards the inner wall of the magnetic ring body, of the upper surface of the magnetic ring body, four circular holes are formed in a whole surface where the upper surface of the magnetic ring body and the surface of the first step are connected, wherein a circumference where the four circular holes are located is evenly divided by the four circular holes, and centers of the circular holes are located on a common boundary where the upper surface and the surface of the first step are connected. Two first grooves arranged oppositely are formed in the surface of the first step, a second step is arranged on one side, facing towards the inner wall of the magnetic ring body, of the bottom surface of the magnetic ring body, and second grooves are formed in the second step. The magnetic ring is made of the magnetic materials by once-forming, so that concentricity and mass uniformity of the magnetic ring are guaranteed, and meanwhile, at least two magnetic sections are embedded when the magnetic ring is formed, so that the formed magnetic ring is enabled to have multipole magnetic fields.
Description
Technical field
The present invention relates to the electrical micro-machine technical field, especially a kind of many magnetic poles magnet ring.
Background technology
Electrical micro-machine has been widely used in the fields such as automation, electromechanics now.Be widely used many magnetic poles magnet ring with being rotor in the fields such as electrical micro-machine and stepping motor, add outside in coil by after a pulse current, rotor just turns over a fixing angle.
Traditional many magnetic poles magnet ring is to use bonding the forming of polylith magnetic section, but be difficult to processing when making small-sized electrical micro-machine, simultaneously owing to being the splicing of polylith magnetic section, be difficult to the magnetic pole angle is done accurately, be difficult to accomplish that whole magnet ring quality is even during simultaneously due to splicing, make the dynamic balancing of magnet ring poor, increased vibration and the noise of motor, affect motor performance.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides between a kind of distance between two poles of simple in structure, polylith magnetic section and magnetic pole angle many magnetic poles magnet ring accurately.
the technical solution adopted for the present invention to solve the technical problems is: a kind of many magnetic poles magnet ring is provided, comprise magnetic ring body and at least two pairs of circular arc magnetic sections, described magnetic ring body is the injection molded integrative-structure of magnetic material, described magnetic section is embedded in magnetic ring body, the magnetic section is evenly arranged in magnetic ring body by the polarity of mutually putting upside down, the upper surface of described magnetic ring body is provided with first step towards magnetic ring body inwall one side, offer four circular holes of circumference equal dividing on be connected with the First terrace at upper surface whole, the center of circle of circular hole is on upper surface and boundary line that the First terrace is connected, offer two the first grooves that are oppositely arranged on the First terrace, the bottom surface of magnetic ring body is provided with second step towards magnetic ring body inwall one side, offer the second groove on second step.
Described magnetic Duan Youliu pair.
Described magnetic ring body is columnar structured.
The invention has the beneficial effects as follows: the present invention is the one-time formed magnet ring of magnetic material, has guaranteed the concentricity of magnet ring and the uniformity of quality, is inlaid with simultaneously at least two pairs of magnetic sections in moulding simultaneously, makes the magnet ring of making have multipole magnetic field.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing embodiment.
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is plan structure schematic diagram of the present invention.
In figure: 1. magnetic ring body, 2. magnetic section, 3. first step, 4. circular hole, 5. the first groove, 6. second step, 7. the second groove.
Embodiment
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to illustrate the present invention rather than limitation of the invention further.
many magnetic poles magnet ring as shown in Fig. 1～2, comprise magnetic ring body 1 and at least two pairs of circular arc magnetic sections 2, magnetic ring body 1 is the injection molded integrative-structure of magnetic material, magnetic section 2 is embedded in magnetic ring body 1, magnetic section 2 is evenly arranged in magnetic ring body 1 by the polarity of mutually putting upside down, the upper surface of magnetic ring body 1 is provided with first step 3 towards magnetic ring body 1 inwall one side, offer four circular holes 4 of circumference equal dividing on be connected with first step 3 faces at upper surface whole, the center of circle of circular hole 4 is on upper surface and boundary line that first step 3 faces are connected, offer two the first grooves 5 that are oppositely arranged on 3 of first steps, the bottom surface of magnetic ring body 1 is provided with second step 6 towards magnetic ring body 1 inwall one side, offer the second groove 7 on second step 6.
Magnetic ring body 1 is columnar structured.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (3)
1. many magnetic poles magnet ring, it is characterized in that: comprise magnetic ring body (1) and at least two pairs of circular arc magnetic sections (2), described magnetic ring body (1) is the injection molded integrative-structure of magnetic material, described magnetic section (2) is embedded in magnetic ring body (1), magnetic section (2) is evenly arranged in magnetic ring body (1) by the polarity of mutually putting upside down, the upper surface of described magnetic ring body (1) is provided with first step (3) towards magnetic ring body (1) inwall one side, offer four circular holes (4) of circumference equal dividing on be connected with first step (3) face at upper surface whole, the center of circle of circular hole (4) is on upper surface and boundary line that first step (3) face is connected, offer two the first grooves (5) that are oppositely arranged on first step (3) face, the bottom surface of magnetic ring body (1) is provided with second step (6) towards magnetic ring body (1) inwall one side, offer the second groove (7) on second step (6).
2. many magnetic poles magnet ring according to claim 1 is characterized in that: described magnetic section (2) has six pairs.
3. many magnetic poles magnet ring according to claim 1 is characterized in that: described magnetic ring body (1) is for columnar structured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110383665 CN103138415A (en) | 2011-11-27 | 2011-11-27 | Multipole magnetic ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110383665 CN103138415A (en) | 2011-11-27 | 2011-11-27 | Multipole magnetic ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103138415A true CN103138415A (en) | 2013-06-05 |
Family
ID=48497871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110383665 Pending CN103138415A (en) | 2011-11-27 | 2011-11-27 | Multipole magnetic ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103138415A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928995A (en) * | 2014-03-30 | 2014-07-16 | 南通万宝实业有限公司 | Ferrite multi-pole magnet ring |
-
2011
- 2011-11-27 CN CN 201110383665 patent/CN103138415A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928995A (en) * | 2014-03-30 | 2014-07-16 | 南通万宝实业有限公司 | Ferrite multi-pole magnet ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |