CN206364621U - A kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners - Google Patents

Abstract

The utility model discloses a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners, its rotor structure is lighter, compact conformation.The utility model solves the technical scheme that its technical problem used：A kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners, comprising shaft core, also substitutes comprising being used in shaft core and is set with anisotropic bond magnetic Nd-Fe-B ring outside the aluminium core of silicon sheet core, aluminium core；Oblique 35 ° of magnetic pole on the anisotropic bond magnetic Nd-Fe-B ring.

Description

A kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners

Technical field

The utility model is related to the rotor structure of non-brush permanent-magnet DC motor, straight specifically for the permanent magnetism of hand held cleaner Flow brushless electric machine.

Background technology

Small-sized universal motor is applied to household electrical appliance, electric tool, body-building apparatus, each side such as factory automation.Now Motor is constantly towards development in terms of miniaturization, intellectuality, high efficiency, low noise.Except employing new technology, outside new material, How to be improved on traditional motor so that more efficient, quality is more preferable, cost is lower, the main improvement as enterprise Direction.

With the continuous progress of motor manufacturing technology, permanent-magnet brushless DC electric machine with its small volume, good performance, efficiency high, The features such as reliability is high, is increasingly widely applied in high-grade household appliance technical field；

The iron core peace for the silicon steel sheet support that the rotor of the current non-brush permanent-magnet DC motor for hand-held cleaners is used In rotating shaft (shaft core), the then coiling enamel covered wire on iron core, in which, the overall weight of iron core and copper cash is by motor Overall weight greatly increase, at the same time, enamel-covered wire can exist broken string risk；The defect of these prior arts hinders electricity The miniaturization of machine, light-weighted development.

Utility model content

Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to disclose a kind of hand The rotor structure of the non-brush permanent-magnet DC motor of dust catcher is held, its rotor structure is lighter, compact conformation.

The utility model solves the technical scheme that its technical problem used：A kind of DC of hand-held cleaners without The rotor structure of brush motor, comprising shaft core, is also substituted outside the aluminium core of silicon sheet core, aluminium core comprising being used in shaft core It is set with anisotropic bond magnetic Nd-Fe-B ring；

Oblique 35 ° of magnetic pole on the anisotropic bond magnetic Nd-Fe-B ring.

It is used as a kind of preferred embodiment of the present utility model：The aluminium core is included on aluminium core body, the aluminium core body Provided with multiple equally distributed grooves, the notch of the groove is provided with scrap (bridge), the end edge that the groove passes through scrap (bridge) and aluminium core body Edge connects into the entirety of closing.

It is used as a kind of preferred embodiment of the present utility model：The length of the scrap (bridge) is 0.3~0.9mm.

It is used as a kind of preferred embodiment of the present utility model：The center of the aluminium core body, which is provided with, to be used to wear assembling The axis hole of the shaft core；Three protuberances, inner circumferential of each protuberance from corresponding axis hole are provided with the axis hole internal perisporium Wall is inwardly projecting and extends in a radial direction.

It is used as a kind of preferred embodiment of the present utility model：The horizontal cross-section of each protuberance is square；It is each prominent The width size in portion is between 3mm~4mm.

The utility model has advantages below compared with prior art：

A kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners disclosed in the utility model, comprising shaft core, The aluminium core for substituting silicon sheet core being arranged in shaft core is also included, aluminium core, which substitutes traditional iron core, can substantially reduce rotor Weight, contributes to the lightweight of motor；Anisotropic bond magnetic Nd-Fe-B ring is set with outside aluminium core of the present utility model；Outside aluminium core Magnet causes rotor compacter, it helps reduction overall weight；In addition, anisotropic bond neodymium iron boron of the present utility model Oblique 35 ° of magnetic pole on magnet ring, the mode of oblique 35 ° of magnetic pole reduces cogging torque by tiltedly filling to reduce during motor operating Power attenuation.

Brief description of the drawings

Fig. 1 is a kind of cross section structure diagram of embodiment of the present utility model；

Fig. 2 is the schematic diagram of oblique 35 ° of magnetic pole of the present utility model；

Fig. 3 is a kind of structural representation of preferred embodiment of aluminium core of the present utility model；

Fig. 4 be embodiment shown in Fig. 3 in aluminium core on groove structural representation；

Fig. 5 is a kind of structural representation of preferred embodiment of the present utility model；Embodiment compared to Fig. 4, Fig. 5 institutes The embodiment shown shaft core in axis hole over-assemble, while axial aperture structure is improved.Description of reference numerals：

10- shaft cores, 20- aluminium cores, 30- magnet rings；11- axis holes, 12- grooves, 13- scrap (bridge)s, 14- aluminium core bodies, 15- shaft cores, 16- Protuberance.

Embodiment

Below in conjunction with the accompanying drawings and embodiment describes the utility model embodiment：

It should be noted that structure, ratio, size for illustrating in this specification institute accompanying drawing etc., only to coordinate explanation Content disclosed in book, so that those skilled in the art is understood with reading, is not limited to the utility model enforceable Qualifications, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing the utility model can be generated Effect and the purpose that can reach under, all should still fall and obtain the scope that can cover in the technology contents disclosed in the utility model It is interior.

Meanwhile, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one ", also Only understanding for ease of narration, and be not used to limit the enforceable scope of the utility model, its relativeness is altered or modified, Under without essence change technology contents, when being also considered as the enforceable category of the utility model.

As shown in Fig. 1~5, it illustrates embodiment of the present utility model；As illustrated, the utility model is disclosed A kind of hand-held cleaners non-brush permanent-magnet DC motor rotor structure, comprising shaft core 10, also comprising in shaft core Anisotropic bond magnetic Nd-Fe-B ring 30 is set with outside aluminium core 20 for substituting silicon sheet core, aluminium core；

Oblique 35 ° of magnetic pole on the anisotropic bond magnetic Nd-Fe-B ring.It should be noted that anisotropic bond neodymium iron In boron magnet ring, material is anisotropic bond NdFeB material, and the material is known materials, such as, the text in Wanfang Database Chapter《The newest Recent Progresses In The Development of anisotropic cohesive neodymium iron boron magnetic particle》Disclose the relevant information of this material；It is of the present utility model Improvement is oblique 35 ° of magnetic pole, and magnet ring and the rotor structure after aluminium core cooperation；Can be using known on material prescription etc. Technology.

It is preferred that, as shown in the figure：The aluminium core includes aluminium core body 14, and the aluminium core body is uniformly distributed provided with multiple Groove 12, the notch of the groove is provided with scrap (bridge) 13, and the groove connects into closing by the end edge of scrap (bridge) and aluminium core body Entirety.

It is preferred that, as shown in the figure：The length of the scrap (bridge) is 0.3~0.9mm.

Above-described embodiment has done advantageous embodiment for aluminium core body, belongs to preferred embodiment, and the improvement is in aluminium core sheet The notch of groove on body connects into the entirety of closing by the end edge of scrap (bridge) and aluminium core body, aluminium liquid when can prevent to manufacture Flow out the cylindrical of aluminium core body；In use, only needing to positioned at the scrap (bridge) car of notch to fall, the groove on aluminium core body is opened as one Mouthful groove, it is to avoid the presence of circulation, it is simple in construction, manufacturing cost is reduced, energy-conserving and environment-protective, convenient processing and manufacture is safe and reliable.

It is preferred that, as shown in the figure：The center of the aluminium core body, which is provided with, is used to wear the axis hole 11 for assembling the shaft core； Be provided with three protuberances 16 on the axis hole internal perisporium, the internal perisporium of each protuberance from corresponding axis hole it is inwardly projecting and Extend in a radial direction.

It is preferred that, as shown in the figure：The horizontal cross-section of each protuberance is square；The width size of each protuberance is in 3mm Between~4mm.

Above-described embodiment is improved for the axial aperture structure of aluminium core body, is belonged to preferred embodiment, by setting Labeled slots can need not be opened up by putting protuberance, and protuberance and the wind noise that windage is produced are relatively small, and due to protrusion The quantity in portion only has 3, aluminium core protuberance and number of times of windage under conditions of running at high speed is reduced, so as to reduce electricity The noise of machine, and then lift the use feeling of user.

Above-mentioned labeled slots are to be reserved in the recessed of revolving body end face when adjusting revolving-body dynamic-balancing test in the prior art Groove, counts and positions to realize；The structure surrogate markers groove that the utility model passes through protuberance.

The utility model preferred embodiment is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to Above-mentioned embodiment, in the knowledge that those of ordinary skill in the art possess, can also not depart from the utility model Made a variety of changes on the premise of objective.

Many other changes and remodeling can be made by not departing from spirit and scope of the present utility model.It should be appreciated that this reality Specific embodiment is not limited to new, scope of the present utility model is defined by the following claims.

Claims (5)

1. a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners, includes shaft core, it is characterised in that：Also comprising peace Being used in shaft core substitutes and is set with anisotropic bond magnetic Nd-Fe-B ring outside the aluminium core of silicon sheet core, aluminium core；

Oblique 35 ° of magnetic pole on the anisotropic bond magnetic Nd-Fe-B ring.

2. a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners as claimed in claim 1, it is characterised in that： The aluminium core includes aluminium core body, and the aluminium core body is provided with multiple equally distributed grooves, and the notch of the groove, which is provided with, to be taken Side, the groove connects into the entirety of closing by the end edge of scrap (bridge) and aluminium core body.

3. a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners as claimed in claim 2, it is characterised in that： The length of the scrap (bridge) is 0.3~0.9mm.

4. a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners as claimed in claim 2, it is characterised in that： The center of the aluminium core body, which is provided with, is used to wear the axis hole for assembling the shaft core；Three are provided with the axis hole internal perisporium Protuberance, the internal perisporium of each protuberance from corresponding axis hole is inwardly projecting and extends in a radial direction.

5. a kind of rotor structure of the non-brush permanent-magnet DC motor of hand-held cleaners as claimed in claim 4, it is characterised in that： The horizontal cross-section of each protuberance is square；The width size of each protuberance is between 3mm~4mm.