CN207743837U - A kind of DC Brushless Motor - Google Patents

Abstract

The utility model discloses a kind of DC Brushless Motors.It includes the outer rotor component being sequentially arranged at from top to bottom on same axis, annulus magnetite, armature winding component, laminating stator and frame component, and the outer rotor component includes drive end bearing bracket and pours into a mould integrally formed casing and shaft with drive end bearing bracket die sinking；The armature winding component includes coiling armature winding, winding the end of a thread connecting plate and terminal line；The laminating stator is mounted on the intermediate cylindrical of frame component, and laminating stator is formed by several anodontia slot structure silicon steel plate stackings；The frame component includes flange, is arranged in flange bearing and gasket and the intermediate cylindrical being arranged above flange.In the utility model, motor assembly precision improves, simple for assembly process and cost reduction；Motor operation is more steady, and vibration, noise reduce, and space availability ratio higher, is conducive to reduce motor size, improves power of motor density；The delivery efficiency of motor is obviously improved.

Description

A kind of DC Brushless Motor

Technical field

The utility model is related to magneto technical field more particularly to a kind of DC Brushless Motors.

Background technology

The typical application field of DC Brushless Motor is unmanned plane industry, main at present by taking unmanned plane power motor as an example To use conventional brushless, permanently excited direct current motor, drag cup brush motor and common iron core brush motor.

Wherein, the stator of conventional brushless, permanently excited direct current motor using the silicon steel sheet closed assembly for having tooth slot structure and At, enamel covered wire can easily on the stator teeth, but there are some defects for coiling：First, there are certain cogging torque, make Vibration, the noise for obtaining motor are obvious；Second, the stator for being provided with tooth socket still has centainly after regularly coiling enameled wire Space waste；Third, there is the stator of tooth slot structure to be not suitable for small scale structures, thus exist not applied to unmanned plane field Foot place；Fourth, have the usual teeth portion magnetic flux density design value of the stator of tooth slot structure higher (1.8T or so), the alternation frequency in magnetic field Rate (14 pole magnetite) is up under a nearly kHz that core loss value increase is very notable, influences the delivery efficiency of motor.Further, since general Some parts of logical brushless motor use mach mode, therefore cost is relatively high.

Although efficiency/power density is higher under certain condition for drag cup brush motor, the brush that it possesses The drag cup winding of structure and high-speed rotation so that running speed and carrying electric current are limited, and brush is easy to wear, uses the longevity Order it is limited, in being mainly used in, in low-grade unmanned plane product.And common iron core brush motor is because of its shortcomings, substantially It can only be used in the toy-type unmanned plane field of low side.

Therefore, for these unmanned plane power motor products at present on the market there are the problem of, correlative technology field Engineering staff it is necessary to develop the power motor that classical insulation is better and accurate, small and exquisite, with improve current mainstream without The cruise duration of man-machine power motor, while cost can also be reduced, inject more vigor for unmanned plane industry.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of DC Brushless Motor, solves brush drag cup The short problem of high cost with permanent magnetic brushless, efficiency is low of electrical machinery life, at the same have and operate steadily, is with small vibration, noise is low, body The small advantage of product.

The purpose of this utility model is achieved through the following technical solutions：

A kind of DC Brushless Motor, including the outer rotor component, the annulus that are sequentially arranged at from top to bottom on same axis Magnetite, armature winding component, laminating stator and frame component, the outer rotor component include drive end bearing bracket and with the drive end bearing bracket Integrally formed casing and shaft are poured into a mould in die sinking；The armature winding component includes coiling armature winding, winding the end of a thread, connection Button and terminal line；The laminating stator is mounted on the intermediate cylindrical of frame component, and laminating stator is by several anodontia slot structure silicon Steel disc is overrided to form, and the coiling armature winding is sleeved on the outside of the laminating stator and is glued fixation；The engine base group Part includes flange, is arranged in flange bearing and gasket and the intermediate cylindrical being arranged above flange, the flange by The exit of the terminal line of nearly armature winding component is buckled equipped with terminal line；The coiling armature winding passes through terminal line and nothing Brush driver corresponding ports connect.

Further, the casing is circular ring type structure, and casing is made of soft magnetic material, is matched with drive end bearing bracket on casing The end of conjunction is equipped with several notches, and the casing, which is engaged with drive end bearing bracket by notch, to be installed together.

Preferably, the shaft is equipped with annular knurl with drive end bearing bracket cooperation end surface, turns the tip of the axis and is fixed using dead ring.

Further, a circular hole is opened up in the middle part of the annulus magnetite, it is outer that shaft passes through circular hole to be sleeved on annulus magnetite In the casing of rotor assembly, it is gap-matched between the annulus magnetite and casing, and be adhesively fixed by seccotine.

Preferably, the outer circle side of the laminating stator coats insulating layer, and the anodontia slot structure silicon steel sheet is circular ring type knot Structure.

Preferably, the flange front and rear ends are equipped with bearing chamber, and the bearing is mounted in bearing chamber.

Preferably, the shaft in the outer rotor component is passed through from brearing bore, and bearing face is lined with the gasket.

Compared with prior art, the utility model has at least the following advantages：

By above-mentioned the technical solution of the utility model, using the structure of few number of magnetic poles, stator slotless, frame component, Outer rotor component is accurate die sinking part, multiple parts is poured into a mould one so that motor assembly precision improves, and possesses higher structure Intensity, simple for assembly process and cost reduction；Laminating stator uses anodontia slot structure, and drag cup winding, which is directly sleeved on to laminate, to be determined On son, winding use advanced wire winding, winding displacement is regular and winding coefficient is larger so that motor gas-gap field waveform it is humorous Wave content substantially reduces so that motor operation is more steady, noise is small, and space availability ratio higher, is conducive to reduce motor Size improves power of motor density.

Description of the drawings

Fig. 1 is a kind of Structure explosion diagram for DC Brushless Motor that the utility model embodiment provides；

Fig. 2 is the structural decomposition diagram of the outer rotor component in the utility model embodiment；

Fig. 3 is the dimensional structure diagram of the armature winding component in the utility model embodiment；

Fig. 4 is the planar structure schematic diagram of the anodontia slot structure silicon steel sheet in the utility model embodiment；

Fig. 5 is the structure enlargement diagram of the flange upper end terminal line buckle in the utility model embodiment.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached The detailed description of the embodiments of the present invention provided in figure is not intended to limit claimed the scope of the utility model, But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people The every other embodiment that member is obtained without creative efforts belongs to the model of the utility model protection It encloses.

As shown in Figure 1, for a kind of DC Brushless Motor that the utility model embodiment proposes, including from top to bottom successively Outer rotor component 1, annulus magnetite 2, armature winding component 3, laminating stator 4 and the frame component 5 of installation on the same axis；Its In, laminating stator 4 is mounted on the intermediate cylindrical of frame component 5, and frame component 5 includes flange 501, is arranged in flange 501 Bearing 7 and gasket 6 and the intermediate cylindrical that is arranged above flange 501,501 front and rear ends of flange be equipped with bearing chamber, axis 7 are held to be mounted in bearing chamber.

Further, the middle part of annulus magnetite 2 opens up a circular hole, and it is outer that shaft 102 passes through circular hole to be sleeved on annulus magnetite 2 In the casing 101 of rotor assembly 1, it is gap-matched between annulus magnetite 2 and casing 101, and be adhesively fixed by seccotine.

Preferably, the shaft 102 in outer rotor component 1 is passed through from 7 endoporus of bearing, and 7 end face of bearing is lined with gasket 6.

Further, coiling armature winding 304 is sleeved on the outside of laminating stator 4 and is glued fixation, coiling armature Winding 304 is connect by terminal line 303 with brushless driver (not shown) corresponding ports.

As shown in Fig. 2, outer rotor component 1 includes drive end bearing bracket 103 and pours into a mould integrally formed machine with the die sinking of drive end bearing bracket 103 Shell 101 and shaft 102；Casing 101 is circular ring type structure, and casing 101 is made of the excellent soft magnetic material of magnetic conductivity, casing The end coordinated with drive end bearing bracket 103 on 101 is equipped with several notches, and casing 101 is engaged by notch with drive end bearing bracket 103 and is mounted on one It rises.

Preferably, shaft 102 coordinates end surface to use annular knurl process with drive end bearing bracket 103, and the end of shaft 102 is adopted It is fixed with dead ring 8, and increases intensity by continuous laser welding.

As shown in figure 3, armature winding component 3 includes coiling armature winding 304, winding the end of a thread 301,302 and of junction button Terminal line 303.

In technical solutions of the utility model, what the structure design of armature winding component 3 made mainly for winding process What coiling armature winding 304 was proposed.

As shown in figure 4, laminating stator 4 is formed by several anodontia slot structure silicon steel plate stackings, anodontia slot structure silicon steel sheet is Circular ring type structure.

In environment is embodied, laminating stator 4 can also be formed by the excellent soft magnetic materials thin slice closed assembly of other magnetic conductivity, The silicon steel material being not limited in the utility model.The periphery of laminating stator 4 uses insulation processing, i.e., laminating stator 4 is outer Circle side coats insulating layer.

As shown in figure 5, flange 501 buckles in the exit of the terminal line 303 close to armature winding component 3 equipped with terminal line 502, so that terminal line 303 is easily caught in and is fixed.

For the utility model using the structure design of few number of magnetic poles, magnetite number of magnetic poles is few (2 poles, 4 poles, 6 poles), and casing 101, Laminating stator 4 is made of soft magnetic materials, and the magnetic field alternative frequency in soft magnetic materials greatly reduces, at high speeds, to loss Reduction highly significant, the delivery efficiency of motor is obviously improved.

With reference to experimentation and data, to the utility model

By taking motor load rotating speed 9600rpm (frequency about 160Hz) as an example, using in the structure of the utility model, (magnetite 1 is right Pole, magnetic field alternative frequency 160Hz), when stator flux density is 1.4T (tesla), core loss value 14W/Kg, and common brushless electricity When machine (usual 7 pairs of pole, magnetic field alternative frequency 1120Hz) stator flux density is 1.4T, core loss value is up to 140W/Kg or more, iron loss Loss value is 10 times of the utility model or more.Slotless stator structure due to the utility model and corresponding height Space availability ratio, so the DC Brushless Motor of the utility model has tooth slot structure brushless motor efficiency/work(than intrinsic Rate density wants high.

The model motor of the utility model improves 8% than former design efficiency, and stalling torque also rises 20%.In addition, this The power motor for slot structure that utility model is anodontia also has great raising in terms of vibration, noise.Therefore, the utility model is straight It is with the obvious advantage to flow brushless motor.

Compared with prior art, the utility model has at least the following advantages：

By above-mentioned the technical solution of the utility model, using the structure of few number of magnetic poles, stator slotless, frame component, Outer rotor component is accurate die sinking part, multiple parts is poured into a mould one so that motor assembly precision improves, and possesses higher structure Intensity, simple for assembly process and cost reduction；Laminating stator uses anodontia slot structure, and drag cup winding, which is directly sleeved on to laminate, to be determined On son, winding use advanced wire winding, winding displacement is regular and winding coefficient is larger so that motor gas-gap field waveform it is humorous Wave content substantially reduces so that motor operation is more steady, noise is small, and space availability ratio higher, is conducive to reduce motor Size improves power of motor density.

The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should Subject to the scope of protection of the claims.

Claims (7)

1. a kind of DC Brushless Motor, including the outer rotor component, the annular magnet that are sequentially arranged at from top to bottom on same axis Stone, armature winding component, laminating stator and frame component, it is characterised in that：The outer rotor component include drive end bearing bracket and with Integrally formed casing and shaft are poured into a mould in the drive end bearing bracket die sinking；The armature winding component include coiling armature winding, around Group the end of a thread, junction button and terminal line；The laminating stator is mounted on the intermediate cylindrical of frame component, and laminating stator is by several nothings Tooth slot structure silicon steel plate stacking forms, and the coiling armature winding is sleeved on the outside of the laminating stator and is glued fixation； The frame component includes flange, is arranged in flange bearing and gasket and the intermediate cylindrical being arranged above flange, institute Flange is stated to buckle equipped with terminal line in the exit of the terminal line close to armature winding component；The coiling armature winding passes through Terminal line is connect with brushless driver corresponding ports.

2. DC Brushless Motor according to claim 1, it is characterised in that：The casing is circular ring type structure, casing It is made of soft magnetic material, the end on casing with drive end bearing bracket cooperation is equipped with several notches, and the casing passes through with drive end bearing bracket Notch occlusion is installed together.

3. DC Brushless Motor according to claim 1, it is characterised in that：The shaft coordinates one end table with drive end bearing bracket Face is equipped with annular knurl, turns the tip of the axis and is fixed using dead ring.

4. DC Brushless Motor according to claim 1, it is characterised in that：A circle is opened up in the middle part of the annulus magnetite Annulus magnetite is sleeved in the casing of outer rotor component by hole, shaft across circular hole, is used between the annulus magnetite and casing Clearance fit, and be adhesively fixed by seccotine.

5. DC Brushless Motor according to claim 1, it is characterised in that：The outer circle side cladding of the laminating stator is exhausted Edge layer, the anodontia slot structure silicon steel sheet are circular ring type structure.

6. DC Brushless Motor according to claim 1, it is characterised in that：The flange front and rear ends are equipped with bearing Room, the bearing are mounted in bearing chamber.

7. DC Brushless Motor according to claim 1, it is characterised in that：Shaft in the outer rotor component is from axis It holds endoporus to pass through, bearing face is lined with the gasket.