CN206422673U - Stator structure and brshless DC motor - Google Patents

Abstract

The utility model provides a kind of stator structure and brshless DC motor, is related to the technical field of brushless electric machine.The stator structure includes being connected to form loop configuration between at least two stator cores and winding, the stator core；Each stator core is connected with corresponding winding, it is to avoid by overall pulling down after stator core section weares and teares or part winding breaks down, reduce cost；The brshless DC motor includes stator structure and the end cap and housing installed that cooperate, the rotor assembly of the brshless DC motor runs through the stator structure, wherein rotor assembly includes armature spindle and the rotor core being fixed on the outside of armature spindle, the both sides of the armature spindle are connected with the end cap and the housing respectively, by the setting of dismountable stator structure, the use cost of brshless DC motor can be reduced；In addition, also there are energy-saving and environmental protection, it is efficient.

Description

Stator structure and brshless DC motor

Technical field

The utility model is related to the technical field of brushless electric machine, more particularly, to a kind of stator structure and brushless dc Machine.

Background technology

Brshless DC motor is a kind of dc motor of electronic commutation, also known as commutatorless motor or commutatorless Dc motor, it is that the mechanical commutator in conventional DC motor is instead of with semiconductor inverter, is constructed without commutation The dc motor of device, because brshless DC motor reduces the resistance rubbed between carbon brush and commutator, it is to avoid due to mill The complete machine damaged and produced is scrapped, and makes complete machine work smooth, durable in use, and avoids transmission abrasion between carbon brush and commutator And producing spark so that it can be operated with particular surroundings；Compared with common DC motor, brshless DC motor power consumption Amount is small, and working time and efficiency improve more than 30%, substantially increase operating efficiency；And brshless DC motor also has body The small, light weight of product, the advantage of energy-saving and environmental protection.Based on this, brshless DC motor is allowed to be widely used in traffic, mine automation With the field such as industrial automation, Aero-Space.

But the stator structure of brshless DC motor of the prior art is structure as a whole, using the nothing of this kind of stator structure Brushless motor is in the case of working long hours, and often stator core can be damaged or winding breaks down, it is therefore desirable to will be whole Individual stator structure is removed, and replaces new stator structure, while workload is increased, also results in cost increase；And stator The dismounting of structure is also and its inconvenient, is wasted time and energy in installation process.

Therefore, for problem above, propose a kind of dismountable stator structure and the brushless direct-current of cost can be reduced Motor is technical problem urgently to be resolved hurrily in industry.

Utility model content

The purpose of this utility model is to provide a kind of stator structure and brshless DC motor, can avoid stator core portion Divide after abrasion or the failure of part winding by the use cost of overall pulling down, and reduction brshless DC motor.

The utility model provide a kind of stator structure include at least two stator cores and winding, the stator core it Between be connected to form loop configuration；

Each stator core is connected with corresponding winding.

Further, depressed part and the projection being adapted with the depressed part are provided with each stator core Mutually fastened between portion, the stator core and form loop configuration.

Further, the winding is wrapped between the stator core and winding frame,

Or be directly wound on winding frame.

The a kind of of the utility model offer includes the brshless DC motor of the stator structure, in addition to the installation that cooperates End cap and housing, the rotor assembly of the brshless DC motor runs through the stator structure, and wherein rotor assembly includes rotor Match somebody with somebody respectively with the end cap and the housing axle and the rotor core being fixed on the outside of armature spindle, the both sides of the armature spindle Close connection.

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, one end of the armature spindle is arranged with the catapult meson for armature spindle described in clamping.

Further, the rotor core inner homogeneous is embedded in multiple permanent magnets, the center of multiple permanent magnets Magnetic shielding structure is provided with, and the magnetic shielding structure is set in the outside of the armature spindle.

Further, at least one is provided with the rotor core spirally to dissipate along the axial arranged of the armature spindle Heat structure.

Further, the spiral radiator structure is spiral through hole, is arranged on the armature spindle surface and described turn At position between sub- core exterior surface；

Or, the spiral radiator structure is at spiral groove, the position for being arranged on the rotor core surface.

Further, multiple passages for ventilation and heat are provided with the housing and the end cap.

The beneficial effects of the utility model are：

A kind of stator structure that the utility model is provided includes phase between at least two stator cores and winding, stator core Company forms loop configuration, and each stator core is connected with corresponding winding, can avoid stator core section wear and tear or Part winding break down after by overall pulling down, the partial demolition that need to only will appear from failure is changed, and convenient maintenance, with up to To the purpose of reduction use cost.

The brshless DC motor that the utility model is provided carries stator structure and rotor assembly, and wherein rotor assembly is through fixed Minor structure, the stator structure includes stator core and winding, when winding is with extraneous power on, produces helical magnetic field, so that Rotor assembly is driven in the internal rotating of stator structure, and then is operated brshless DC motor, when stator structure part mill After damaging or breaking down, the partial demolition that need to only will appear from failure is changed, and convenient maintenance, and then is effectively reduced brushless The use cost of direct current generator.

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 accompanying drawing used required in embodiment or description of the prior art is briefly described, 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.

A kind of structural representation for the stator structure that Fig. 1 provides for the utility model embodiment；

Another structural representation for the stator structure that Fig. 2 provides for the utility model embodiment；

The structural representation of the stator core for the stator structure that Fig. 3 provides for the utility model embodiment；

The brushless DC motor structure schematic diagram that Fig. 4 provides for the utility model embodiment；

The rotor component construction with spiral through hole for the brshless DC motor that Fig. 5 provides for the utility model embodiment Schematic diagram；

The rotor component construction with spiral groove for the brshless DC motor that Fig. 6 provides for the utility model embodiment Schematic diagram；

The rotor assembly side view for the brshless DC motor that Fig. 7 provides for the utility model embodiment.

Icon：100- stator structures；101- stator cores；1011- depressed parts；1012- lug bosses；102- windings；103- Wind frame；200- rotor assembly；201- armature spindles；202- rotor cores；The spiral through holes of 2021-；The spiral grooves of 2022-； 203- magnetic shielding structures；204- permanent magnets；300- end caps；400- bearings；500- housings；600- screws；700- 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 a part of embodiment of the utility model, 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 or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have 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 indicating or implying 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 to 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 embodiment and with reference to accompanying drawing.

Concrete structure is as shown in Fig. 1-7 figures.A kind of structure for the stator structure that Fig. 1 provides for the utility model embodiment is shown It is intended to；Another structural representation for the stator structure that Fig. 2 provides for the utility model embodiment；Fig. 3 is that the utility model is real The structural representation of the stator core of the stator structure of example offer is provided；The brushless direct-current that Fig. 4 provides for the utility model embodiment Electric machine structure schematic diagram；The rotor with spiral through hole for the brshless DC motor that Fig. 5 provides for the utility model embodiment Modular construction schematic diagram；The rotor with spiral groove for the brshless DC motor that Fig. 6 provides for the utility model embodiment Modular construction schematic diagram；The rotor assembly side view for the brshless DC motor that Fig. 7 provides for the utility model embodiment.

A kind of stator structure that the present embodiment is provided includes at least two stator cores 101 and winding 102, stator core Loop configuration is connected to form between 101；Each stator core 101 is connected with corresponding winding 102.

It should be noted that the stator structure include at least two stator cores 101 and winding 102, stator core 101 it Between be connected to form loop configuration, and each stator core 101 is connected with corresponding winding 102, can avoid stator core portion Divide by overall pulling down after abrasion or the failure of part winding 102, the partial demolition that need to only will appear from failure is changed, and Convenient maintenance, so as to reduce use cost, reduces business capital pressure to a certain extent.

In the optional technical scheme of the present embodiment, as shown in figure 3, being provided with the He of depressed part 1011 in each stator core Mutually fastened between the lug boss 1012 being adapted with depressed part 1011, stator core 101 and form loop configuration.

Specifically, the side wall of depressed part 1011 is provided with small boss, the side wall of lug boss 1012 is provided with and small boss phase The little groove of adaptation, and small boss and little groove are respectively provided with multiple, and depressed part 1011 and lug boss 1012 can be made to fix more Closely.

It should be noted that because the depressed part 1011 and lug boss 1012 in each stator core are adapted, in splicing During stator core 101, only depressed part 1011 need to mutually block with lug boss 1012 and, and will not due to stator works and it is loose It is dynamic.

In the optional technical scheme of the present embodiment, as shown in figure 1, winding 102 is directly wound on winding frame 103；Stator When iron core sets two, typically using such a winding method；When one of stator core abrasion or one of which winding 102 After failure, the stator core or one group of winding 102 that need to only will appear from failure are changed.

In the optional technical scheme of the present embodiment, as shown in Fig. 2 winding 102 is wrapped in stator core 101 and winding frame Between 103；When stator core sets multiple, typically using such a winding method；When wherein one or two stator core abrasion Or after one of which or two groups of windings 102 break down, the stator core or winding 102 that need to only will appear from failure are changed i.e. Can.

It should be noted that when stator core sets multiple, the annexation between stator core is set with stator core Stator core annexation at two is identical.

A kind of brshless DC motor that the present embodiment is provided includes said stator structure 100, in addition to the installation that cooperates End cap 300 and housing 500, the rotor assembly 200 of brshless DC motor runs through stator structure 100, and wherein rotor assembly 200 is wrapped Include armature spindle 201 and be fixed on the rotor core 202 in the outside of armature spindle 201, the both sides of armature spindle 201 respectively with end cap 300 And housing 500 is connected.

Specifically, housing 500 can be sleeved on the outside of stator structure 100, end cap 300 is fastened on the end of housing 500, And end cap 300 and stator structure 100 are together fixed on to the end and inside of housing 500, stator structure by multiple screws 600 100 inner sides are provided with rotor assembly 200, and the both sides of armature spindle 201 are overlapped on end cap 300 and housing 500, work as brushless dc When machine is powered, the inside of stator structure 100 produces helical magnetic field, and with the magnetic field interaction on rotor core 202, so as to drive Rotor assembly 200 rotates at a high speed inside stator structure 100 around armature spindle 201.

It should be noted that the brshless DC motor carries stator structure 100 and rotor assembly 200, wherein rotor assembly 200 run through stator structure 100, and the stator structure 100 includes stator core 101 and winding 102, when winding 102 and extraneous power supply During connection, helical magnetic field is produced, so as to drive rotor assembly 200 in the internal rotating of stator structure 100, and then makes brushless direct-current Motor is operated, after the part wears of stator structure 100 or failure, and the partial demolition that need to only will appear from failure is changed i.e. Can, and convenient maintenance, and then effectively reduce the use cost of brshless DC motor.

It should also be noted that, brshless DC motor also includes fan component, and fan component includes flabellum and wind nest, fan Leaf is set in the one end of armature spindle 201, drives flabellum to rotate together with when armature spindle 201 rotates, so as to by brushless dc Heat inside machine blows to outside, and then reaches the purpose of radiating.

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 500 Bearing 400 is equipped with, using interference fit connection, the outer ring of bearing 400 and end cap between the inner ring and armature spindle 201 of bearing 400 Using interference fit connection between 300 and housing 500；Have the advantages that easy to connect.

In the optional technical scheme of the present embodiment, one end of armature spindle 201 is arranged with the catapult for clamping armature spindle 201 Meson 700.

Specifically, the catapult meson 700 is arranged in end cap 300, and it is set on one end of armature spindle 201 close to rotor The position of bearing 400 on axle 201, can be by one end clamping of armature spindle 201 by catapult meson 700, and then can alleviate The problem of due to axial movement of the rotor structure caused by fit-up gap along armature spindle 201, so as to reduce rotor structure The mobile vibration produced, further increases the working life of brshless DC motor.

In the optional technical scheme of the present embodiment, as shown in fig. 7, the inner homogeneous of rotor core 202 is embedded in multiple permanent magnets 204, rotor core 202 is turned into a structure of permanent magnet 204, helical magnetic field is produced in the case of the energization of winding 102, and with turning The magnetic field interaction of sub- iron core 202, so as to drive rotor assembly 200 to be rotated around armature spindle 201, by changing electrical condition Steering and the speed conditions of rotor assembly 200 can be controlled.

Specifically, the center of multiple permanent magnets 204 is provided with magnetic shielding structure 203, and magnetic shielding structure 203 is set in and turned The outside of sub- axle 201.

It should be noted that because permanent magnet 204, transformer, coil etc. can produce magnetic field, thus these magnetic fields it Between can interfere, the normal work of brshless DC motor is had influence on, so being badly in need of the strong magnetic disturbance of shielding of adopting an effective measure Source so that the component near other is from magnetic interference.

In the optional technical scheme of the present embodiment, at least one axial direction along armature spindle 201 is provided with rotor core 202 The spiral radiator structure of arrangement.

It should be noted that the spiral radiator structure use spiral helicine space curved surface structure, 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 that good effect is played in the radiating to brshless DC motor Really；At the same time, conventional motors are mainly reaches the purpose of 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.

Specifically, as shown in figure 5, spiral radiator structure is specially spiral through hole 2021, and the spiral through hole 2021 are uniformly arranged at the position between the surface of armature spindle 201 and the outer surface of rotor core 202；Due on rotor core 202 Multiple spiral through holes 2021 are evenly arranged along the axial direction of armature spindle 201, and the hole wall of each spiral inner side of through hole 2021 is equal Using space curved surface structure；The both ends open diameter of the spiral through hole 2021 can be with equal, it would however also be possible to employ opens one end Mouthful diameter is slightly larger and mode that other end opening diameter is slightly smaller, however, to make the heat inside brshless DC motor preferably dissipate Send out, to reach more preferable result of ventilating heat dissipation, it is preferable that using one end open diameter is slightly larger and other end opening diameter slightly Small mode.

Specifically, as shown in fig. 6, spiral radiator structure can also use the structure of spiral groove 2022, and it is multiple Spiral groove 2022 is evenly arranged at the position on the surface of rotor core 202；Due on rotor core 202 along armature spindle 201 Axial direction uniformly open up multiple spiral grooves 2022, and the inwall of each spiral groove 2022 uses space curved surface knot Structure；The spiral groove 2022 can be by the way of uniform groove width, while one end groove width can also be used slightly larger and the other end The slightly smaller mode of groove width, but to make the radiating effect of brshless DC motor better, it is preferable that the spiral groove 2022 Groove width by the way of one end is slightly larger and the other end is slightly smaller.

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 slotted on the surface of rotor core 202 is taken, to cause brshless DC motor to reach, preferably radiating is imitated Really.

In the optional technical scheme of the present embodiment, it is provided with housing 500 and end cap 300 multiple for ventilation and heat Passage.

According to the installation situation of rotor assembly 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 500；When rotor structure is rotated forward, if end On lid 300 is air admission hole for passage, then on housing 500 for venthole, the now spiral radiating knot on rotor structure The air-flow that structure is produced blows out the heat inside brshless DC motor from the venthole on housing 500, at the same time, continually Internal ventilation of the ground from the air admission hole on end cap 300 to brshless DC motor, the purpose of radiating is realized by the process；Work as rotor When structure is reversely rotated, airflow direction is on the contrary, heat is blown from the venthole on end cap 300, and air is from entering on housing 500 Stomata is passed through, and equally can also reach the purpose of radiating.

In addition, the brshless DC motor that the utility model is provided uses high speed low loss synchronization compared with common DC motor Rectification PWM, with strict current limit and direct torque, with big detent torque and results in and starts speed faster Degree, using opened loop control, low magnetic disturbance, anti-interference, anti-shake performance are strong, also with energy-saving and environmental protection, efficient advantage, emphasis Be the motor rotating speed it is per minute can reach ten two to ten three ten thousand rotating speeds, apply in cleaner field, one can be formed small Cyclone, cleaning effect is good and efficient, at the same time can also be widely used in various fields.

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, or 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 (9)

1. a kind of stator structure, it is characterised in that including：Phase between at least two stator cores and winding, the stator core Company forms loop configuration；

Each stator core is connected with corresponding winding；

Depressed part and the lug boss being adapted with the depressed part, the stator core are provided with each stator core Between mutually fasten form loop configuration；

The side wall of the depressed part is provided with small boss, and the side wall of the lug boss is provided be adapted with the small boss small Groove, and the small boss and the little groove be respectively provided with it is multiple.

2. stator structure according to claim 1, it is characterised in that the winding is wrapped in the stator core and winding Between frame,

Or be directly wound on winding frame.

3. a kind of include the brshless DC motor of stator structure described in claim 1 or 2, it is characterised in that also including phase interworking The end cap and housing installed are closed, the rotor assembly of the brshless DC motor runs through the stator structure, wherein rotor assembly bag Include armature spindle and the rotor core being fixed on the outside of armature spindle, the both sides of the armature spindle respectively with the end cap and described Housing is connected.

4. brshless DC motor according to claim 3, 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.

5. the brshless DC motor according to claim 3 or 4, 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.

6. brshless DC motor according to claim 3, it is characterised in that the rotor core inner homogeneous insertion is multiple Permanent magnet, the center of multiple permanent magnets is provided with magnetic shielding structure, and the magnetic shielding structure is set in the armature spindle Outside.

7. the brshless DC motor according to claim 3 or 6, it is characterised in that be provided with least on the rotor core One axial arranged spiral radiator structure along the armature spindle.

8. brshless DC motor according to claim 7, it is characterised in that the spiral radiator structure is spiral logical Hole, is arranged at the position between the armature spindle surface and the rotor core exterior surface；

Or, the spiral radiator structure is at spiral groove, the position for being arranged on the rotor core surface.

9. brshless DC motor according to claim 3, it is characterised in that be provided with the housing and the end cap Multiple passages for ventilation and heat.