CN203416106U

CN203416106U - Permanent magnet brushless turbine fan

Info

Publication number: CN203416106U
Application number: CN201320504747.1U
Authority: CN
Inventors: 薛往; 王永和; 李波波
Original assignee: Shanghai Xinyao Electronics Co Ltd
Current assignee: Shanghai Xinyao Electronics Co Ltd
Priority date: 2013-08-16
Filing date: 2013-08-16
Publication date: 2014-01-29
Anticipated expiration: 2023-08-16

Abstract

The utility model provides a permanent magnet brushless turbine fan comprising a turbine rotor and a permanent magnet DC brushless motor. The turbine rotor comprises a turbine, a holding frame and a rotating shaft. The permanent magnet DC brushless motor comprises a permanent magnet rotor and a bearing. The turbine rotor and the permanent magnet rotor are fixedly connected in a coaxial way. The turbine, the holding frame and the rotating shaft are integrally formed via injection molding. The rotating shaft arranged between the internal end surface of the holding frame and the internal end surface of the bearing is provided with an elastic element. One end of the elastic element abuts against the internal end surface of the holding frame, and the other end of the elastic element abuts against the internal end surface of the bearing. The rotating shaft penetrates through the bearing, and the end part is provided with an elastic blocking ring used for shafts. As the turbine and the holding frame and the rotating shaft are integrally formed via injection molding, and axial positioning and axial vibration buffering are performed on the turbine rotor by the elastic element and the elastic blocking ring used for the shafts respectively so that the permanent magnet brushless turbine fan is stable in operation, slight in vibration and low in noise during working.

Description

Brushless, permanently turbofan

Technical field

The utility model relates to a kind of heat abstractor, particularly relates to a kind of car light brushless, permanently turbofan.

Background technology

LED(Light Emitting Diode, light-emitting diode) be a kind of solid-state semiconductor device that can be visible ray by electric energy conversion, LED can directly be converted into light electricity.Due to LED light fixture have energy-conservation, cracky not, lamp pearl is smaller, be applicable to narrow space illumination, and the response time be the advantages such as millisecond rank, so LED lamp is suitable for car light very much.Along with the development of vehicle electric, the application of LED lamp technology on automobile is also more and more extensive, and especially LED lamp is used as car headlight.In the LED lamp course of work, can constantly produce heat, this heat leaves by the LED lamp fin being equipped with, to guarantee LED normal operation.Yet, when the time that car light leaves, grown, the heat that relies on LED lamp fin LED lamp can not be produced leaves rapidly, cause the heat in car light constantly to be assembled, the temperature stabilization of LED lamp inside sharply raises, thereby affected the reliability of LED lamp work, and then the fail safe of travelling to car brings harm.

At present, the heat for the LED that leaves fast produces, has increased brushless, permanently turbofan on LED lamp side, and this brushless, permanently turbofan comprises turbine rotor and non-brush permanent-magnet DC motor, and turbine rotor comprises turbine, retainer and rotating shaft; Non-brush permanent-magnet DC motor comprises bearing, p-m rotor, stator and electric-controlled plate.During assembling brushless, permanently turbofan, must first turbine, retainer and rotating shaft be assembled together, and then p-m rotor is contained in retainer, because assembly process is many, reduce the concentricity of turbine and rotating shaft; In addition, the axial location of turbine rotor is not good, causes brushless, permanently turbofan, when work, galloping occurs, and shakes large and the large problem of noise.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model is to provide that a kind of assembling is simple, smooth running, shakes the little and low brushless, permanently turbofan of noise.

For achieving the above object and other relevant objects, the utility model provides a kind of brushless, permanently turbofan, comprise turbine rotor and non-brush permanent-magnet DC motor, described turbine rotor comprises turbine, retainer and rotating shaft, and described non-brush permanent-magnet DC motor comprises p-m rotor and bearing; Described turbine rotor is coaxially fixedly connected with p-m rotor, and described turbine, retainer and rotating shaft are integrated injection mo(u)lding; Rotating shaft between described retainer inner face and described bearing inner face is provided with flexible member, and one end of flexible member is against on described retainer inner face, and the other end of flexible member is against on described bearing inner face; Described rotating shaft is through described bearing, and end is provided with circlip for shaft.

Preferably, described flexible member is volute spring.

Further, a circlip groove is offered in the end of described rotating shaft, and described circlip for shaft is stuck in described circlip groove.

Further, the described rotating shaft of described circlip for shaft inner side is provided with a pad, and described pad is simultaneously against on the inner face of described circlip for shaft, and described pad another side is against on described bearing outer face.

Further, described turbine is arranged with a shell outward.

Further, described bearing is two ball bearings.

Further, described non-brush permanent-magnet DC motor also comprises stator and electric-controlled plate, and described stator is provided with reference column, and described electric-controlled plate is provided with the location hole matching with described reference column.

As mentioned above, brushless, permanently turbofan of the present utility model, has following beneficial effect:

Because described turbine and described retainer, rotating shaft are integrated injection mo(u)lding, guaranteed that the shrinkage ratio after turbine injection moulding is more even, increased the moment of inertia of turbine, and while assembling this brushless, permanently turbofan, only turbine rotor and non-brush permanent-magnet DC motor need be fitted together, reduce assembly process, improved the concentricity of turbine and rotating shaft; And because flexible member and circlip for shaft carry out axial location and buffering axial vibrations to described turbine rotor respectively, avoid the rigid collision of turbine rotor and non-brush permanent-magnet DC motor, guaranteed that turbine rotation is steady and noise is low, therefore, this brushless, permanently turbofan when work smooth running, shake little and noise is low.

Accompanying drawing explanation

Fig. 1 is shown as the explosive view of brushless, permanently turbofan of the present utility model.

Fig. 2 is shown as the enlarged drawing at A place in Fig. 1.

Fig. 3 is shown as the longitudinal section of brushless, permanently turbofan of the present utility model.

Fig. 4 is shown as the explosive view of stator of the present utility model.

Element numbers explanation

1 turbine rotor 21 bearings

11 turbine 22 stators

12 retainer 23 electric-controlled plates

13 rotating shaft 231 location holes

3 spring element 221 reference columns

4 circlip for shaft 222 silicon steel sheets

41 circlip groove 223 first coil jackets

5 pad 224 second coil jackets

6 shell 24 p-m rotors

Embodiment

By particular specific embodiment, execution mode of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.

Notice, appended graphic the illustrated structure of this specification, ratio, size etc., equal contents in order to coordinate specification to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the utility model, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the object that can reach, all should still drop in the scope that technology contents that the utility model discloses can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the utility model.

As shown in figures 1 and 3, the utility model provides a kind of brushless, permanently turbofan, comprise turbine rotor 1 and non-brush permanent-magnet DC motor, described turbine rotor 1 comprises turbine 11, retainer 12 and rotating shaft 13, and described non-brush permanent-magnet DC motor comprises p-m rotor 24 and bearing 21; Described turbine rotor 1 is coaxially fixedly connected with p-m rotor 24; Described turbine 11, retainer 12 and rotating shaft 13 are integrated injection mo(u)lding; Because described turbine 11 and described retainer 12, rotating shaft 13 are integrated injection mo(u)lding, guaranteed that the shrinkage ratio after turbine 11 injection mouldings is more even, increased the moment of inertia of turbine 11, and while assembling this brushless, permanently turbofan, because turbine rotor 1 itself does not need assembling, only turbine rotor 1 and non-brush permanent-magnet DC motor need be fitted together, reduce assembly process, improve the concentricity of turbine 11 with rotating shaft 13.Rotating shaft 13 between described retainer 12 inner faces and described bearing 21 inner faces is provided with flexible member 3, and one end of flexible member 3 is against on described retainer 12 inner faces, and the other end of flexible member 3 is against on described bearing 21 inner faces; Described rotating shaft 13 is through described bearing 21, and end is provided with circlip for shaft 4.Because flexible member 3 and circlip for shaft 4 carry out axial location and buffering axial vibrations to described turbine rotor 1 respectively, avoid the rigid collision of turbine rotor 1 and non-brush permanent-magnet DC motor, guaranteed turbine rotor 1 when rotating steadily and noise low, therefore, this brushless, permanently turbofan when work smooth running, shake little and noise is low.

Preferably, as shown in figures 1 and 3, described flexible member 3 is volute spring.

Further, as shown in Figures 2 and 3, for convenient, described circlip for shaft 4 is fixed as in described rotating shaft 13, in the end of described rotating shaft 13, offers a circlip groove 41, described circlip for shaft 4 is stuck in described circlip groove 41, described circlip for shaft 4 has been obtained better fixing.

Further, as shown in Figures 2 and 3, for eliminating the gap between circlip for shaft 4 and described bearing 21 outer faces, the described rotating shaft 13 of described circlip for shaft 4 inner sides is provided with a pad 5, and described pad 5 one sides are against on the inner face of described circlip for shaft 4, and described pad 5 another sides are against on described bearing 21 outer faces.

Further, as shown in figures 1 and 3, for the heat leaving rapidly on LED lamp fin, at the outer sheathed shell 6 of described turbine 11.Described shell 6 has formed the air intake of this brushless, permanently turbofan and the passage of air-out with described turbine 11, makes wind more concentrated, is conducive to the heat leaving rapidly on LED lamp fin.

Further, as shown in Figure 3 and Figure 4, in order to reduce the frictional force between described bearing 21 and described rotating shaft 13, to reduce noise and to extend the useful life of described bearing 21 and described rotating shaft 13, described bearing 21 is two ball bearings 21.

Further, as shown in Figures 2 and 3, described non-brush permanent-magnet DC motor also comprises stator 22 and electric-controlled plate 23, for fear of described stator 22 and electric-controlled plate 23, relative displacement occurs, described stator 22 overcoats have p-m rotor 24, and described stator 22 is provided with reference column 221.Described stator 22 comprises silicon steel sheet 222, and the first coil jackets 223 and the second coil jackets 224 that are set in respectively described silicon steel sheet 222 two ends, and described reference column 221 is located on described the first coil jackets 223; Described electric-controlled plate 23 is provided with the location hole matching with described reference column 221.

In sum, the brushless, permanently turbofan that the utility model provides has effectively overcome various shortcoming of the prior art and tool high industrial utilization.

Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.

Claims

1. a brushless, permanently turbofan, comprise turbine rotor (1) and non-brush permanent-magnet DC motor, described turbine rotor (1) comprises turbine (11), retainer (12) and rotating shaft (13), described non-brush permanent-magnet DC motor comprises p-m rotor (24) and bearing (21), it is characterized in that, described turbine rotor (1) is coaxially fixedly connected with p-m rotor (24), and described turbine (11), retainer (12) and rotating shaft (13) are integrated injection mo(u)lding; Rotating shaft (13) between described retainer (12) inner face and described bearing (21) inner face is provided with flexible member (3), and one end of flexible member (3) is against on described retainer (12) inner face, the other end of flexible member (3) is against on described bearing (21) inner face; Described rotating shaft (13) is through described bearing (21), and end is provided with circlip for shaft (4).

2. brushless, permanently turbofan according to claim 1, is characterized in that: described flexible member (3) is volute spring.

3. brushless, permanently turbofan according to claim 2, is characterized in that: a circlip groove (41) is offered in the end of described rotating shaft (13), and described circlip for shaft (4) is stuck in described circlip groove (41).

4. brushless, permanently turbofan according to claim 3, it is characterized in that: the described rotating shaft (13) of described circlip for shaft (4) inner side is provided with a pad (5), and described pad (5) one side is against on the inner face of described circlip for shaft (4), and described pad (5) another side is against on described bearing (21) outer face.

5. brushless, permanently turbofan according to claim 2, is characterized in that: the outer shell (6) that is arranged with of described turbine (11).

6. brushless, permanently turbofan according to claim 2, is characterized in that: described bearing (21) is two ball bearings.

7. brushless, permanently turbofan according to claim 2, it is characterized in that: described non-brush permanent-magnet DC motor also comprises stator (22) and electric-controlled plate (23), described stator (22) is provided with reference column (221), and described electric-controlled plate (23) is provided with the location hole (231) matching with described reference column (221).