CN206650522U - Rotor structure and brshless DC motor - Google Patents
Rotor structure and brshless DC motor Download PDFInfo
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- CN206650522U CN206650522U CN201621193741.7U CN201621193741U CN206650522U CN 206650522 U CN206650522 U CN 206650522U CN 201621193741 U CN201621193741 U CN 201621193741U CN 206650522 U CN206650522 U CN 206650522U
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- brshless
- armature spindle
- motor
- rotor
- spiral
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Abstract
The utility model provides a kind of rotor structure and brshless DC motor, is related to the technical field of brushless electric machine.The rotor structure includes armature spindle and the rotor core being fixed on the outside of armature spindle, the axial arranged spiral radiator structure along armature spindle is provided with the rotor core, directly radiator structure is arranged on rotor structure, the volume of brshless DC motor is effectively reduced, reduces manufacturing cost；The brshless DC motor includes rotor structure and the end cap and housing of the installation that cooperates, the stator module of the brshless DC motor is arranged on enclosure interior, rotor core is arranged on the inside of stator module, the both sides of the armature spindle are connected with the end cap and the housing respectively, eddy airstream can be formed when rotor structure rotates by above-mentioned rotor structure, heat inside brshless DC motor is blown out, to reach the purpose of radiating, and then improve the life-span of brshless DC motor；Also there are energy-saving and environmental protection, efficient.
Description
Technical field
The technical field of brushless electric machine is the utility model is related to, more particularly, to a kind of rotor structure and brushless dc
Machine.
Background technology
Brshless DC motor is to replace traditional mechanical commutator with electronic commutator, and as power electronic devices is rapid
The Mechatronic motor product for developing and growing up, rubbed because brshless DC motor reduces between carbon brush and commutator
Resistance, avoid due to abrasion and caused complete machine is scrapped, make complete machine work smooth, durable in use, and avoid carbon brush
Transmission is worn and produces spark between commutator so that it can be operated with particular surroundings；With common DC motor
Compare, brshless DC motor power consumption is small, and working time and efficiency improve more than 30%, substantially increase operating efficiency；And
And brshless DC motor also has the advantages of small volume, light weight, energy-saving and environmental protection.Based on this, brshless DC motor is allowed to extensive
Applied to the field such as traffic, mine automation and industrial automation, Aero-Space.
But the is nearly solid magnetic texure of rotor structure of brshless DC motor of the prior art, using this kind of rotor
The brshless DC motor of structure in the case of working long hours, often due to solid rotor structure not easy heat radiation and cause motor
Temperature is higher and influences its normal work and service life, and the serious brshless DC motor that likely results in burns.Existing skill
There are some motors that fan is installed on motor shaft in order to reach the effect of radiating in art, but this kind of situation additional
Part, the volume and complexity of motor are undoubtedly added, so as to cause cost to increase.
Therefore, for problem above, propose that a kind of brshless DC motor with heat sinking function rotor structure is in industry
Technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of rotor structure and brshless DC motor, of the prior art to alleviate
Easy heat radiation does not cause the too high phenomenon of temperature to rotor when brshless DC motor works long hours, and efficiently solves brushless dc
The heat dissipation problem of machine and brshless DC motor volume and complexity are reduced, reduce manufacturing cost.
A kind of rotor structure provided by the utility model includes armature spindle and the rotor core being fixed on the outside of armature spindle,
At least one axial arranged spiral radiator structure along the armature spindle is provided with the rotor core.
Further, the spiral radiator structure is spiral through hole, is arranged on the armature spindle surface and described turn
Opening position between sub- core exterior surface.
Further, the spiral radiator structure is spiral groove, is arranged on the position on the rotor core surface
Place.
Further, the rotor core has magnetic.
A kind of brshless DC motor for including the rotor structure provided by the utility model, in addition to the installation that cooperates
End cap and housing, the stator module of the brshless DC motor is arranged on the enclosure interior, and the rotor core is arranged on
The inside of the stator module, the both sides of the armature spindle are connected with the end cap and the housing respectively.
Further, bearing is provided between the both sides of the armature spindle and the end cap and the housing, it is described
Using interference fit connection, the outer ring of the bearing and the end cap and the shell between the inner ring of bearing and the armature spindle
Using interference fit connection between body.
Further, the bearing is angular contact ball bearing.
Further, one end of the armature spindle is arranged with the catapult meson for armature spindle described in clamping.
Further, multiple passages for ventilation and heat are provided with the housing and the end cap.
Further, the stator module includes stator core and the stator winding being wrapped on stator core, and institute
The end for stating stator winding is connected with multiple binding posts being connected with external power source.
A kind of rotor structure provided by the utility model includes armature spindle and rotor core, and is set on rotor core
There is the axial arranged spiral radiator structure along armature spindle, the spiral radiator structure uses spiral helicine space curved surface knot
Structure, can form eddy airstream when rotor structure rotates, and by heat caused by rotor structure and stator module from brushless straight
The inside blowout of motor is flowed, to reach the purpose of radiating.
Brshless DC motor provided by the utility model carries rotor structure, and the rotor structure is arranged on the interior of stator module
Portion, stator module include stator core and stator winding, when stator winding and extraneous power on, produce helical magnetic field, from
And rotor structure is driven to be incited somebody to action while the internal rotating of stator core, rotor structure rotation by spiral radiator structure
Heat is transported to the outside of brshless DC motor, causes temperature too high effectively to alleviate to work long hours and burns or reduce
The problem of life-span；And brshless DC motor provided by the utility model changes the additional on armature spindle in the prior art
The phenomenon of fan, so as to reduce the volume of brshless DC motor and complexity, and then effectively reduce brushless dc
The manufacturing cost of machine.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for the rotor structure with spiral through hole that the utility model embodiment provides；
Fig. 2 is the schematic diagram for the rotor structure with spiral groove that the utility model embodiment provides；
Fig. 3 is the schematic diagram of the space curved surface structure for the spiral radiator structure that the utility model embodiment provides；
Fig. 4 is the schematic diagram of the structure for the brshless DC motor that the utility model embodiment provides.
Icon：100- stator modules；101- stator cores；102- stator winding；200- rotor structures；201- turns
Sub- axle；202- rotor cores；The spiral through holes of 2021-；The spiral grooves of 2022-；300- end caps；400- housings；
500- bearings；600- catapult mesons.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The utility model is described in further detail below by specific examples of the implementation and with reference to accompanying drawing.
Concrete structure is as Figure 1-Figure 4.Fig. 1 is turn with spiral through hole that the utility model embodiment provides
The schematic diagram of minor structure；Fig. 2 is the schematic diagram for the rotor structure with spiral groove that the utility model embodiment provides；Figure
3 be the schematic diagram of the space curved surface structure for the spiral radiator structure that the utility model embodiment provides；Fig. 4 is the utility model
The schematic diagram of the structure for the brshless DC motor that embodiment provides.
A kind of rotor structure that the present embodiment provides includes armature spindle 201 and is fixed on the rotor in the outside of armature spindle 201
Iron core 202, at least one spiral radiator structure, and these spiral radiator structure edges are provided with the rotor core 202
The axial arranged of armature spindle 201.
It should be noted that the spiral radiator structure uses spiral helicine space curved surface structure, in armature spindle 201 and turn
When sub- iron core 202 rotates at a high speed, spiral air flow can be produced at the spiral helicine space curved surface structure, and can be by rotor knot
Heat inside structure and whole brshless DC motor blows to the external world, so as to which good effect is played in the radiating to brshless DC motor
Fruit；At the same time, conventional motors are mainly the purpose for reaching radiating by increasing flabellum in the end of armature spindle 201, and this reality
Traditional radiating mode is changed with the rotor structure of new offer, directly radiator structure is arranged on rotor core 202, because
This reduces the composition parts of motor without additional flabellum, effectively reduce to a certain extent motor volume and
Complexity, so as to reduce the manufacturing cost of motor, business capital pressure is reduced to a certain extent.
In the optional technical scheme of the present embodiment, spiral radiator structure is specially spiral through hole 2021, and the spiral
Formula through hole 2021 is uniformly arranged on the opening position between the surface of armature spindle 201 and the outer surface of rotor core 202.
Specifically, as shown in figure 1, rotor structure includes armature spindle 201 and rotor core 202, the edge on rotor core 202
The axial direction of armature spindle 201 is evenly arranged multiple spiral through holes 2021, and the hole wall of each spiral inner side of through hole 2021 is adopted
With space curved surface structure；The both ends open diameter of the spiral through hole 2021 can also use one end open with equal
Diameter is slightly larger and mode that other end opening diameter is slightly smaller, however, to make the heat inside brshless DC motor preferably distribute
Go out, to reach more preferable result of ventilating heat dissipation, it is preferable that slightly larger using one end open diameter and other end opening diameter is slightly smaller
Mode.
It is it should be noted that straight mainly for rotor core 202 by the way of the radiator structure of spiral through hole 2021
Footpath rotor structure bigger than normal, and the big I of the spiral opening diameter of through hole 2021 with specific reference to the diameter of rotor core 202 and turns
The size of the difference of the sub- diameter of axle 201 is rationally set.
In the optional technical scheme of the present embodiment, spiral radiator structure can also use the knot of spiral groove 2022
Structure, and multiple spiral grooves 2022 are evenly arranged in the opening position on the surface of rotor core 202.
Specifically, as shown in Fig. 2 rotor structure equally includes armature spindle 201 and rotor core 202, in rotor core 202
On along the axial direction of armature spindle 201 uniformly open up multiple spiral grooves 2022, and the inwall of each spiral groove 2022 is adopted
With space curved surface structure；The spiral groove 2022 can be by the way of uniform groove width, while can also use one end groove width
Slightly larger and mode that other end groove width is slightly smaller, but to make the radiating effect of brshless DC motor better, it is preferable that the spiral shell
The groove width of rotating groove 2022 is slightly larger using one end and the other end it is slightly smaller by the way of.
It should be noted that primarily directed to rotor core 202 by the way of the radiator structure of spiral groove 2022
With the less rotor structure of difference in diameter of armature spindle 201, because the diameter of rotor core 202 is less than normal, it is not easy to open up thereon
Through hole, therefore the mode in the surface of rotor core 202 fluting is taken, to cause brshless DC motor to reach preferably radiating effect
Fruit.
In the optional technical scheme of the present embodiment, rotor core 202 has magnetic.
Specifically, the rotor core 202 is a magnet structure, spiral is produced in the case of the energization of stator winding 102
Magnetic field, and with the magnetic field interaction of rotor core 202, so as to drive rotor structure to be rotated around armature spindle 201, pass through change
Electrical condition can control steering and the speed conditions of rotor structure.
A kind of brshless DC motor that the present embodiment provides includes above-mentioned rotor structure 200, in addition to end cap 300, housing
400 and stator module 100, wherein, end cap 300 and housing 400 can cooperate installation, and stator module 100 is arranged on shell
In body 400, rotor core 202 is arranged in stator module 100, the both sides of armature spindle 201 respectively with end cap 300 and housing
400 are connected.
Specifically, housing 400 can be sleeved on the outside of stator module 100, end cap 300 is fastened on one end of housing 400
Portion, and end cap 300 and stator module 100 are together fixed on to by multiple screws the end and inside of housing 400；In stator pack
The inner side of part 100 sets rotor structure 200, and stator pack is arranged on the magnetic part of rotor core 202 in rotor structure 200
In part 100, the both sides of armature spindle 201 are overlapped on end cap 300 and housing 400, when brshless DC motor is powered, stator module
100 inside produce helical magnetic fields, and with the magnetic field interaction on rotor core 202, so as to drive rotor structure 200 in stator
The inside of component 100 rotates at a high speed around armature spindle 201.
Brshless DC motor provided by the utility model with heat dissipation rotor structure 200 is in normal work, due to turning
Spiral helicine space curved surface structure in minor structure 200 can produce eddy airstream when rotor structure 200 rotates, so as to
Heat inside rotor structure 200, stator module 100 and housing 400 is blown to outside brshless DC motor, to reach radiating
Effect, and then effectively alleviate brshless DC motor and work long hours and cause temperature too high and burn or reduce asking for life-span
Topic；Meanwhile directly by changing rotor structure 200 without additional fan, reduce brshless DC motor volume and
Complexity, and then effectively reduce the manufacturing cost of brshless DC motor.
In the optional technical scheme of the present embodiment, it is all provided between the both sides of armature spindle 201 and end cap 300 and housing 400
Be equipped with bearing 500, between the inner ring and armature spindle 201 of the bearing 500 using interference fit connection, the outer ring of the bearing 500 with
It is same using interference fit connection between end cap 300 and housing 400.
In the optional technical scheme of the present embodiment, the bearing 500 is angular contact ball bearing.
It should be noted that angular contact ball bearing can bear radial load and axial load simultaneously, and can be higher
Worked under rotating speed, its contact angle is bigger, and the ability of axial carrying is higher, it is generally the case that high accuracy and high-revolving corner connection
Tactile ball bearing takes 15 degree or so of contact angle；However, single-row angular contact ball bearing can only bear the axial load in a direction,
Use angular contact ball bearing, including back-to-back configuration, face-to-face configuration and arranged in series in pairs under normal circumstances, wherein, back to
The loaded line for carrying on the back the angular contact ball bearing of configuration separates to bearing axle, can bear the axial load in both direction, but each side
Upward load can only be born by an angular contact ball bearing, the rigid phase pair that angular contact ball bearing provides under this kind of collocation form
It is higher, and tilting moment can be born；The loaded line of the angular contact bearing configured face-to-face converges to bearing axle, can bear to act on
In the axial load in both direction, but the load on each direction can only be born by a bearing, the angle of this kind of collocation form
The rigidity that contact ball bearing provides is relatively low, and unsuitable bears tilting moment；The angular contact ball bearing of arranged in series
Loaded line it is parallel, radial and axial load is uniformly shared by bearing, and still, bearing group can only bear to act on a direction
Axial load.
Due to being provided with spiral radiator structure on rotor structure 200 in the present embodiment, when rotor structure 200 rotates at a high speed
When, spiral radiator structure can produce powerful air-flow in order to which the heat inside brshless DC motor is blown out into the external world, so
And in the process, air-flow can produce reaction force to spiral radiator structure, and the reaction force is transmitted by rotor core 202
To armature spindle 201, and then the bearing 500 of the both sides of armature spindle 201 is passed to, if the bearing 500 uses common deep-groove ball axle
Hold, when rotor structure 200 rotates at a high speed for a long time, reaction force is common along acting axially on for armature spindle 201 for a long time
On deep groove ball bearing, the life-span of bearing 500 can be caused drastically to decline, have a strong impact on the normal work of brshless DC motor；So this
Embodiment uses groups of angular contact ball bearing as the case may be, just can so be gone back while radial load is carried
Bearing load can be ensured, so as to effectively reduce the abrasion of bearing 500, improve the service life of bearing 500.It is preferred that
Ground, the present embodiment can use the angular contact ball bearing of back-to-back configuration.
In the optional technical scheme of the present embodiment, the bullet for clamping armature spindle 201 is arranged with one end of armature spindle 201
Bend meson 600.
Specifically, the catapult meson 600 is arranged in end cap 300, and it is set on one end of armature spindle 201 close to rotor
The position of bearing 500 on axle 201, can be by one end clamping of armature spindle 201 by catapult meson 600, and then can alleviate
Due to axial movement of the rotor structure 200 along armature spindle 201 caused by fit-up gap the problem of, so as to reducing rotor structure
Vibrated caused by 200 movement, further increase the working life of brshless DC motor.
In the optional technical scheme of the present embodiment, it is provided with housing 400 and end cap 300 and multiple is used for ventilation and heat
Passage.
According to the installation situation of rotor structure 200 and the working condition of brshless DC motor, the passage is specifically divided into
Air admission hole and venthole, and both are separately positioned on end cap 300 and housing 400；When rotor structure 200 rotates forward, such as
On fruit end cap 300 is air admission hole for passage, then on housing 400 for venthole, it is now spiral on rotor structure 200
Air-flow caused by radiator structure blows out the heat inside brshless DC motor from the venthole on housing 400, at the same time, source
The purpose to radiate is realized by the process constantly from the air admission hole on end cap 300 to the internal ventilation of brshless DC motor in source；
When rotor structure 200 reversely rotates, airflow direction is on the contrary, heat is blown from the venthole on end cap 300, and air is from housing
Air admission hole on 400 is passed through, and equally can also reach the purpose of radiating.
In the optional technical scheme of the present embodiment, stator module 100 includes stator core 101 and is wrapped in stator core
Stator winding 102 on 101, and the end of the stator winding 102 is connected with multiple binding posts being connected with external power source.
In addition, brshless DC motor provided by the utility model uses high speed low loss synchronization compared with common DC motor
Rectification PWM, there is strict current limit and direct torque, there is big detent torque and startup speed faster can be obtained
Degree, using opened loop control, low magnetic disturbance, anti-interference, anti-shake performance is strong, also with energy-saving and environmental protection, it is efficient the advantages of.
Finally it should be noted that：More than each embodiment only illustrating the technical solution of the utility model, rather than to it
Limitation；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Work as understanding：It can still modify to the technical scheme described in foregoing embodiments, either to which part or complete
Portion's technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality
The scope of new each embodiment technical scheme.
Claims (10)
- A kind of 1. rotor structure, it is characterised in that including：Armature spindle and the rotor core being fixed on the outside of armature spindle, it is described At least one axial arranged spiral radiator structure along the armature spindle is provided with rotor core；The spiral radiator structure uses spiral through hole, and the spiral through hole is slightly larger and another using one end open diameter The slightly smaller mode of one end open diameter；Or the spiral radiator structure use spiral groove, and the spiral groove use one end groove width slightly larger and The slightly smaller mode of other end groove width.
- 2. rotor structure according to claim 1, it is characterised in that the spiral through hole is arranged on the armature spindle table Opening position between face and the rotor core exterior surface.
- 3. rotor structure according to claim 1, it is characterised in that the spiral groove is arranged on the rotor core The opening position on surface.
- 4. according to the rotor structure described in claim any one of 1-3, it is characterised in that the rotor core has magnetic.
- 5. a kind of brshless DC motor for including any one of the claim 1-4 rotor structures, it is characterised in that also include Cooperate the end cap and housing of installation, and the stator module of the brshless DC motor is arranged on the enclosure interior, described turn Sub- iron core is arranged on the inside of the stator module, and the both sides of the armature spindle coordinate with the end cap and the housing respectively Connection.
- 6. brshless DC motor according to claim 5, it is characterised in that the both sides of the armature spindle and the end cap with And bearing is provided between the housing, using interference fit connection, institute between the inner ring of the bearing and the armature spindle State between the outer ring of bearing and the end cap and the housing using interference fit connection.
- 7. brshless DC motor according to claim 6, it is characterised in that the bearing is angular contact ball bearing.
- 8. the brshless DC motor according to claim 5 or 6, it is characterised in that one end of the armature spindle is arranged with use In the catapult meson of armature spindle described in clamping.
- 9. the brshless DC motor according to claim 5 or 6, it is characterised in that be all provided with the housing and the end cap It is equipped with multiple passages for ventilation and heat.
- 10. brshless DC motor according to claim 5, it is characterised in that the stator module include stator core with And be wrapped in the stator winding on stator core, and the end of the stator winding be connected with it is multiple be connected with external power source connect Terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193741.7U CN206650522U (en) | 2016-10-28 | 2016-10-28 | Rotor structure and brshless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193741.7U CN206650522U (en) | 2016-10-28 | 2016-10-28 | Rotor structure and brshless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650522U true CN206650522U (en) | 2017-11-17 |
Family
ID=60283672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621193741.7U Active CN206650522U (en) | 2016-10-28 | 2016-10-28 | Rotor structure and brshless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206650522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901767A (en) * | 2017-11-21 | 2018-04-13 | 田卫社 | By the rail traffic vehicles of driven by power |
-
2016
- 2016-10-28 CN CN201621193741.7U patent/CN206650522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901767A (en) * | 2017-11-21 | 2018-04-13 | 田卫社 | By the rail traffic vehicles of driven by power |
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