CN205178811U - Permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN205178811U CN205178811U CN201520992820.3U CN201520992820U CN205178811U CN 205178811 U CN205178811 U CN 205178811U CN 201520992820 U CN201520992820 U CN 201520992820U CN 205178811 U CN205178811 U CN 205178811U
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- CN
- China
- Prior art keywords
- permanent magnet
- draw
- groove
- rotor core
- stator
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a motor technical field, concretely relates to permanent magnet synchronous motor, it includes stator and rotor, the stator is including stator core and stator winding, the rotor is including rotor core and evenly arrange the permanent magnet on rotor core, its characterized in that: the permanent magnet is fixed in on the permanent magnet draw -in groove of rotor core peripheral part, the permanent magnet has the outer nonreentrant surface of arc, the bottom intermediate position of permanent magnet is equipped with the connecting portion of swallow -tail form, the permanent magnet draw -in groove be with the swallow -tail form draw -in groove of the connecting portion looks adaptation of permanent magnet. The utility model discloses well permanent magnet has alleviateed the strength reduction to rotor core with the special connection structure of permanent magnet draw -in groove, simultaneously through the ranger restriction to space length L, permanent magnet thickness t and permanent magnet both ends an angle make its maximize under the requirement of satisfying demagnetization patience and torque characteristic the reduction use amount of permanent magnet.
Description
Technical field
The utility model relates to motor technology field, is specifically related to a kind of permanent magnet synchronous motor.
Background technology
In the prior art, permanent magnet synchronous motor is made up of stators and rotators, and its rotor includes rotor core and permanent magnet, and this permanent magnet outer surface is called gap lengths L to the distance value of stator core inner surface in the technical parameter of motor.Mention in the patent publication us that publication number is " 101488694 ": in permanent magnet motor in the past, because gap lengths L is larger, therefore guarantee that the thickness t [mm] of degaussing patience (Japanese: demagnetize patience), permanent magnet needed for torque characteristics becomes large, magnet use amount increases, motor cost increase; For solving this problem; above-mentioned patent publication us require that the protection range of gap lengths L and permanent magnet central portion thickness t is " described gap lengths L and described thickness t is set in the scope of L=0.6 ~ 0.7mm, t/ (t+L)=0.77 ~ 0.85, and the thickness e at the both ends of described permanent magnet is set in the scope of 0.4≤e/t≤0.7 ".
Technical scheme in above-mentioned patent documentation solves by setting rational gap lengths size and permanent magnet gauge the problem that permanent magnet use amount is large, motor cost is high; But, owing to being subject to the requirement of technology and the restriction of production technology, it is larger that this gas length L sets sometimes, now, for guaranteeing that degaussing patience and torque characteristics still need the permanent magnet that thickness is larger, the increase of permanent magnet thickness just requires on rotor core, to offer darker permanent magnet draw-in groove to guarantee firm fixed permanent magnet, and the intensification of permanent magnet draw-in groove will certainly weaken the structural strength of rotor core.
Summary of the invention
The utility model provides a kind of permanent magnet synchronous motor, and object solves existing permanent magnet synchronous motor when gas length is larger, needs to increase more permanent magnet use amount and the problem that can weaken rotor core structure intensity.
The technical solution of the utility model is as follows:
A kind of permanent magnet synchronous motor, comprise stators and rotators, described stator includes stator core and stator winding, described rotor includes rotor core and is evenly arranged in the permanent magnet on rotor core, it is characterized in that: described permanent magnet is fixed on the permanent magnet draw-in groove of rotor core peripheral part, described permanent magnet has arc convex surface, the centre position, bottom of described permanent magnet is provided with the connecting portion of swallow-tail form, and described permanent magnet draw-in groove is the swallow-tail form draw-in groove suitable with the connecting portion of permanent magnet.
Gap lengths between the peripheral part of described permanent magnet and the inner peripheral portion of described stator core is set to L, when the thickness of the central portion of described permanent magnet in motor direction of rotation is set to t, described gap lengths L and described thickness t is set at L=1.0 ~ 1.2mm, t/(t+L) in=scope of 0.8 ~ 0.9.
The both ends of described permanent magnet are provided with angle a, and 15 °≤a≤45 °.
The beneficial effects of the utility model are:
One, the combination of swallow-tail form draw-in groove on the swallow-tail form connecting portion of permanent magnet and rotor core, making rotor core just can ensure that the firmness of permanent magnet flew off to prevent permanent magnet without the need to offering dark permanent magnet draw-in groove, which reducing the weakening to rotor core intensity;
Two, the scope restriction of the utility model to gap lengths L, permanent magnet thickness t and a angle, permanent magnet both ends makes its maximized use amount decreasing permanent magnet under the requirement meeting degaussing patience and torque characteristics.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model.
Fig. 2 be gas length L and magnet central portion thickness t between the partial sectional view of relation.
Fig. 3 is the structural representation of permanent magnet.
In figure, 1 stator core, 2 stator winding, 3 rotor cores, 4 permanent magnets, 5 permanent magnet draw-in grooves, 6 convex surface, 7 connecting portions.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.As shown in Figure 1, this embodiment comprises stators and rotators, described stator includes stator core 1 and stator winding 2, described rotor includes rotor core 3 and is evenly arranged in the permanent magnet 4 on rotor core, its special character is: described permanent magnet is fixed on the permanent magnet draw-in groove 5 of rotor core peripheral part, described permanent magnet has arc convex surface 6, the centre position, bottom of described permanent magnet is provided with the connecting portion 7 of swallow-tail form, and described permanent magnet draw-in groove is the swallow-tail form draw-in groove suitable with the connecting portion of permanent magnet.
Further, as shown in Figure 2, gap lengths between the peripheral part of described permanent magnet and the inner peripheral portion of described stator core is set to L, when the thickness of the central portion of described permanent magnet in motor direction of rotation is set to t, described gap lengths L and described permanent magnet thickness t is set at t/(t+L) in=scope of 0.8 ~ 0.9, when t/ (t+L) is less, i.e. described permanent magnet less thick, magnet use amount reduces, but the degaussing patience of motor can be deteriorated accordingly, torque also can decline, this cannot guarantee motor characteristic, therefore, also need the scope of void length L, the minimizing with permanent magnet use amount of guaranteeing of motor characteristic can be realized by setting gap lengths L=1.0 ~ 1.2mm simultaneously.
Further, as shown in Figure 3, the both ends of described permanent magnet are provided with angle a, and when angle, a is less, and permanent magnet use amount is also fewer, and cost is also lower, but degaussing patience also can be deteriorated accordingly, and for this reason, the scope of set angle a is 15 °≤a≤45 °.
By setting preferably number range for described gap lengths L, described permanent magnet thickness t and described angle a, under existing production technology, both can meet the characteristic of motor, having reduced magnet use amount again.
Claims (3)
1. a permanent magnet synchronous motor, comprise stators and rotators, described stator includes stator core (1) and stator winding (2), described rotor includes rotor core (3) and is evenly arranged in the permanent magnet (4) on rotor core, it is characterized in that: described permanent magnet is fixed on the permanent magnet draw-in groove (5) of rotor core peripheral part, described permanent magnet has arc convex surface (6), the centre position, bottom of described permanent magnet is provided with the connecting portion (7) of swallow-tail form, and described permanent magnet draw-in groove is the swallow-tail form draw-in groove suitable with the connecting portion of permanent magnet.
2. permanent magnet synchronous motor according to claim 1, it is characterized in that: the gap lengths between the peripheral part of described permanent magnet and the inner peripheral portion of described stator core is set to L, when the thickness of the central portion of described permanent magnet in motor direction of rotation is set to t, described gap lengths L and described thickness t is set at L=1.0 ~ 1.2mm, t/(t+L) in=scope of 0.8 ~ 0.9.
3. permanent magnet synchronous motor according to claim 1 or 2, is characterized in that: the both ends of described permanent magnet are provided with angle a, and 15 °≤a≤45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520992820.3U CN205178811U (en) | 2015-12-04 | 2015-12-04 | Permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520992820.3U CN205178811U (en) | 2015-12-04 | 2015-12-04 | Permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178811U true CN205178811U (en) | 2016-04-20 |
Family
ID=55742741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520992820.3U Expired - Fee Related CN205178811U (en) | 2015-12-04 | 2015-12-04 | Permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205178811U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880031A (en) * | 2018-05-29 | 2018-11-23 | 珠海格力电器股份有限公司 | Rotor structure, rotor and motor |
| CN109038891A (en) * | 2018-08-07 | 2018-12-18 | 吴遵功 | A kind of electronics mutual inductance motor |
| CN109385577A (en) * | 2018-05-14 | 2019-02-26 | 滨州学院 | A kind of technique preparing permanent-magnet material and magneto |
-
2015
- 2015-12-04 CN CN201520992820.3U patent/CN205178811U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109385577A (en) * | 2018-05-14 | 2019-02-26 | 滨州学院 | A kind of technique preparing permanent-magnet material and magneto |
| CN108880031A (en) * | 2018-05-29 | 2018-11-23 | 珠海格力电器股份有限公司 | Rotor structure, rotor and motor |
| CN108880031B (en) * | 2018-05-29 | 2020-07-24 | 珠海格力电器股份有限公司 | Rotor structure, motor rotor and motor |
| CN109038891A (en) * | 2018-08-07 | 2018-12-18 | 吴遵功 | A kind of electronics mutual inductance motor |
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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 |
Granted publication date: 20160420 Termination date: 20161204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |