CN108711978A - It is a kind of to adapt to high-speed rotating rotor punching - Google Patents
It is a kind of to adapt to high-speed rotating rotor punching Download PDFInfo
- Publication number
- CN108711978A CN108711978A CN201810690485.XA CN201810690485A CN108711978A CN 108711978 A CN108711978 A CN 108711978A CN 201810690485 A CN201810690485 A CN 201810690485A CN 108711978 A CN108711978 A CN 108711978A
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- CN
- China
- Prior art keywords
- magnet steel
- placed cavity
- flat segments
- strengthening segment
- steel placed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention relates to the rotational components technical fields of magnetic circuit, it is specially a kind of to adapt to high-speed rotating rotor punching, including punching ontology, the edge of punching ontology is equipped with magnet steel placed cavity, the end of magnet steel placed cavity is equipped with magnetic bridge, the magnetic bridge is equipped with flat segments and strengthening segment successively along its length, flat segments towards the side of magnet steel placed cavity be straight flange, side rounded corner setting of the strengthening segment towards magnet steel placed cavity, strengthening segment is equipped with lug boss back to the side of magnet steel placed cavity, strengthening segment gradually increases from close to one end of flat segments to far from its width of one end of flat segments.This programme solves the problems, such as that the magnetic bridge of rotor punching in the prior art is easy under the circumference of the high-speed rotation by destruction.
Description
Technical field
The present invention relates to the rotational components technical fields of magnetic circuit, specially a kind of to adapt to high-speed rotating rotor punching.
Background technology
There are increasingly higher demands to the efficiency of New energy automobile motor now, it is desirable to which motor has higher power close
The more wide in range degree, higher efficiency, high efficiency range the better.In order to adapt to the small of New energy automobile motor, rotary inertia is small, dynamic
The feature that state response is fast, peak speed performance is good, to which more stringent requirements are proposed for the rotating speed to motor.Therefore, with motor
Rotating speed it is higher and higher, more stringent requirements are proposed for Intensity Design and its reliability for rotor punching.
The edge of the rotor punching of motor is internally provided with magnet steel placed cavity, and magnet steel placed cavity is internally provided with magnet steel, magnet steel
Permutation is distributed axis in a ring centered on the axis of rotor punching, and the end of magnet steel is equipped with magnetic bridge, and magnetic bridge is connected on rotor punching
The structure of the outside rotors punching part of magnet steel placed cavity and the rotor punching part of inside is connect, rotor is high-speed rotating
In the case of, the centrifugal force that magnet steel generates is with the square directly proportional of rotating speed, and therefore, the moment of flexure that magnetic bridge is subject to is also approximate with the flat of rotating speed
Side is directly proportional.Since electric vehicle is higher and higher to the rotating speed requirement of motor, in order to ensure reliability, the usual method is that increasing
The width of magnetic bridge, to enhance the intensity of magnetic bridge, still, so, the width increase of magnetic bridge leads to the magnetic flux leakage at magnetic bridge position
Increase, the electric property of motor is caused to decline.
Invention content
The invention is intended to provide a kind of high-speed rotating rotor punching of adaptation, to solve the magnetic of rotor punching in the prior art
The problem of bridge is easy by destroying under the circumference of the high-speed rotation.
The present invention base case be：It is a kind of to adapt to high-speed rotating rotor punching, including punching ontology, punching ontology
Edge is equipped with magnet steel placed cavity, and the end of magnet steel placed cavity is equipped with magnetic bridge, and the magnetic bridge is equipped with flat segments successively along its length
And strengthening segment, flat segments towards the side of magnet steel placed cavity be straight flange, side rounding of the strengthening segment towards magnet steel placed cavity
Angle is arranged, and strengthening segment is equipped with lug boss back to the side of magnet steel placed cavity, and strengthening segment is put down from close to one end of flat segments to separate
Its width of one end of straight section gradually increases.
Compared with prior art, it is the advantages of this programme：By the way that magnetic bridge is arranged to flat segments and strengthening segment, reinforcing
Side rounded corner at section, other side setting protrusion, to keep the center line of strengthening segment curved, avoids stress concentration.Together
When, by rounded corner, make to produce gap between magnetic bridge and magnet steel, and then magnetic bridge is made to obtain certain deformation space, makes magnetic
Bridge is destroyed to offset caused by a part by deformation.By setting flat segments, the minimum widith of magnetic bridge is made to be determined, from
And the magnetic flux leakage of magnetic bridge is made not will increase, and then ensure that the magnetic flux leakage of magnetic bridge in the case where enhancing the intensity of magnetic bridge, in turn
The electric property of motor is also ensured under the strength conditions for enhancing magnetic bridge.After protrusion and rounded corner are set, using
When decompressor punching rotor punching, keep the contour line at magnetic bridge position more smooth, avoids stress concentration and brought damage
It is bad, improve ratio of briquetting.
Further, the contour line of the strengthening segment towards the side rounded corner of magnet steel placed cavity be located at flat segments straight flange it is remote
Side from magnet steel placed cavity.Under the circumference of the high-speed rotation, the flat segments of magnetic bridge can squeeze magnet steel rotor punching, lead to
The straight flange for making the contour line of rounded corner be located at flat segments is crossed far from the side of magnet steel placed cavity, to make the position of rounded corner will not
It is contacted with the side wall of magnet steel, and then ensure that the deformation space of magnetic bridge strengthening segment.Moreover, in this way setting after, strengthening segment not with magnetic
Steel contacts, so, the pressure suffered by strengthening segment mostlys come from the active force of flat segments transmission, and the work suffered by flat segments
It is mainly firmly the pressure that magnet steel applies, and the pressure direction that magnet steel applies is mainly the length direction perpendicular to flat segments, in
It is that the pressure active force that flat segments are applied to strengthening segment is also perpendicular to the length directions of flat segments.Due to being provided in strengthening segment
Rounded corner and lug boss, so not parallel between the center line of strengthening segment and the length direction of flat segments, then, flat segments apply
The centerline direction out of plumb of active force and strengthening segment to strengthening segment makes active force generation along point of the center line of strengthening segment
Power, and then the power of the centerline direction perpendicular to strengthening segment is made to reduce, so that the moment of flexure that strengthening segment is subject to is reduced, and then improve magnetic
The stability of bridge.
Further, the contour line of the lug boss of the magnetic bridge is at most made of three curves.
Description of the drawings
Fig. 1 is a kind of schematic diagram adapting to high-speed rotating rotor punching embodiment of the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1.
Specific implementation mode
It is further described below by specific implementation mode：
Reference numeral in Figure of description includes：Cover board 1, magnet steel placed cavity 2, punching ontology 3, lightening hole 4, connecting hole
5, strengthening segment 61, lug boss 611, flat segments 62.
Embodiment is substantially as shown in Figure 1 and Figure 2：It is a kind of to adapt to high-speed rotating rotor punching, including punching ontology 3,
The axially disposed connecting hole 5 having with keyway in the middle part of punching ontology 3.It is additionally provided with 12 lightening holes 4 on punching ontology 3, owns
The axis circular array centered on the axis of punching ontology 3 of lightening hole 4 is distributed.The edge of punching ontology 3 is equipped with 12 bar shapeds
Magnet steel placed cavity 2, all magnet steel placed cavities 2 are distributed by axis circular array of the axis of punching.Magnet steel placed cavity 2 is far from punching
The position at center is equipped with cover board 1, and two sections of cover board 1 are connect by magnetic bridge with punching ontology 3.Cover board 1, magnetic bridge and punching ontology 3
It is integrally formed.
Magnetic bridge is equipped with flat segments 62 and strengthening segment 61 successively along its length, and flat segments 62 are towards the side of magnet steel placed cavity 2
While be straight flange, strengthening segment 61 towards magnet steel placed cavity 2 side rounded corner setting, strengthening segment 61 back to magnet steel placed cavity 2 one
Side is equipped with lug boss 611, its width of one end of strengthening segment 61 from close to one end of flat segments 62 to far from flat segments 62 gradually increases
Greatly.The straight flange that the contour line of strengthening segment 61 towards the side rounded corner of magnet steel placed cavity 2 is located at flat segments 62 is placed far from magnet steel
The side of chamber 2.The contour line of the lug boss 611 of magnetic bridge is at most made of three curves.
Specific implementation process is as follows：Magnet steel is placed in magnet steel placed cavity 2, when rotor punching high speed rotation, magnet steel exists
Cover board 1 is squeezed under the action of centrifugal force, cover board 1 transmits the force to magnetic bridge, to make magnetic bridge pass through flat segments 62 to magnetic
Steel is squeezed, and due to having gap between the strengthening segment 61 and magnet steel of magnetic bridge, makes magnetic bridge that certain deformation occur, to avoid
Magnetic bridge damages.Meanwhile the active force suffered by strengthening segment 61 can along centerline direction decompose a part, to make strengthening segment 61 by
The moment of flexure arrived reduces, and then reduces the active force suffered by magnetic bridge, improves the stability of magnetic bridge.
Claims (3)
1. a kind of adapting to high-speed rotating rotor punching, including punching ontology, the edge of punching ontology is equipped with magnet steel placed cavity, magnetic
The end of steel placed cavity is equipped with magnetic bridge, it is characterised in that：The magnetic bridge is equipped with flat segments and strengthening segment successively along its length, puts down
Straight section is straight flange towards the side of magnet steel placed cavity, and the strengthening segment is reinforced towards the side rounded corner setting of magnet steel placed cavity
Section back to the side of magnet steel placed cavity be equipped with lug boss, strengthening segment from close to flat segments one end to far from flat segments one end its
Width gradually increases.
2. a kind of high-speed rotating rotor punching of adaptation according to claim 1, it is characterised in that：The strengthening segment direction
The contour line of the side rounded corner of magnet steel placed cavity is located at the straight flange of flat segments far from the side of magnet steel placed cavity.
3. a kind of high-speed rotating rotor punching of adaptation according to claim 2, it is characterised in that：The protrusion of the magnetic bridge
The contour line in portion is at most made of three curves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690485.XA CN108711978A (en) | 2018-06-28 | 2018-06-28 | It is a kind of to adapt to high-speed rotating rotor punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690485.XA CN108711978A (en) | 2018-06-28 | 2018-06-28 | It is a kind of to adapt to high-speed rotating rotor punching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108711978A true CN108711978A (en) | 2018-10-26 |
Family
ID=63872212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810690485.XA Pending CN108711978A (en) | 2018-06-28 | 2018-06-28 | It is a kind of to adapt to high-speed rotating rotor punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108711978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098166A (en) * | 2020-01-09 | 2021-07-09 | 蜂巢传动系统(江苏)有限公司保定研发分公司 | Rotor punching sheet and rotor iron core |
| CN113315310A (en) * | 2021-07-30 | 2021-08-27 | 深圳诚一信科技有限公司 | Special speed reducing motor for anti-theft door |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087752A (en) * | 1998-03-20 | 2000-07-11 | Samsung Electronics Co., Ltd. | Motor having permanent magnets received therein |
| CN2775926Y (en) * | 2005-03-08 | 2006-04-26 | 曹小元 | Novel self starting permanent magnetic synchronous motor |
| CN102570659A (en) * | 2010-11-01 | 2012-07-11 | 本田技研工业株式会社 | Rotor of rotary electric machine |
-
2018
- 2018-06-28 CN CN201810690485.XA patent/CN108711978A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087752A (en) * | 1998-03-20 | 2000-07-11 | Samsung Electronics Co., Ltd. | Motor having permanent magnets received therein |
| CN2775926Y (en) * | 2005-03-08 | 2006-04-26 | 曹小元 | Novel self starting permanent magnetic synchronous motor |
| CN102570659A (en) * | 2010-11-01 | 2012-07-11 | 本田技研工业株式会社 | Rotor of rotary electric machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098166A (en) * | 2020-01-09 | 2021-07-09 | 蜂巢传动系统(江苏)有限公司保定研发分公司 | Rotor punching sheet and rotor iron core |
| CN113315310A (en) * | 2021-07-30 | 2021-08-27 | 深圳诚一信科技有限公司 | Special speed reducing motor for anti-theft door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181026 |
|
| RJ01 | Rejection of invention patent application after publication |