CN2451779Y

CN2451779Y - Rotor Assembly Device of Brushless DC Motor

Info

Publication number: CN2451779Y
Application number: CN 00263123
Authority: CN
Inventors: 尹佐国; 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2000-11-28
Filing date: 2000-11-28
Publication date: 2001-10-03
Anticipated expiration: 2010-11-28

Abstract

The utility model relates to a rotor assembling device of a brushless DC motor, which comprises a body, a circuit board, a pole piece, a coil and a shaft seat, wherein the shaft seat is provided with a positioning hole; the rotor is provided with a counter bore seat, the counter bore seat is provided with a through hole, a bearing is arranged in the counter bore seat, and the rotor is provided with a permanent magnet; the fixing part is provided with a cap head with a larger diameter, and a rod part is arranged below the cap head and is pivoted in the bearing and combined in a positioning hole of the shaft seat. Has the effects of convenient and fast assembly.

Description

The rotor assembling apparatus of Brushless DC motor

The utility model relates to a kind of rotor assembling apparatus of Brushless DC motor, and this rotor can make things convenient for assembled fixing.

Please read shown in Figure 6, the Taiwan patent gazette of its claimant Shen Zhun is announced " metal tube of motor of heat-dissipating fan and bearing means thereof " patent case No. 384947, it discloses a kind of Brushless DC motor of axial windings and radial air gaps, this patent case those disclosed herein, be combined on the shell block 90 by a metal central siphon 91, these metal central siphon 91 external diameters are combined with circuit board 92, coil 93, pole piece 94; Metal central siphon 91 internal diameters are for oil-impregnated bearing 95 or setting sleeve and ball bearing combination, by the magnet ring 96 and the coil 93 induction rotations of rotor.

The known Brushless DC motor of this kind, need on its assembly working by its circuit board 92 of metal central siphon 91 time-consuming assemblings, coil 93, pole piece 94 and bearing 95 members thereof, again and, 91 of this member and metal central siphons need the suitable tightnesss of formation, therefore, be inconvenient in manufacturing and assembly working.

The purpose of this utility model is to provide a kind of rotor assembling apparatus of Brushless DC motor, only bearing need be inserted counterbore seat at rotor, and with fixed block rotor is fixed on the axle bed of body again, this rotor can be easily assembled, makes the manufacturing of this Brushless DC motor and assemble more or less freely.The purpose of this utility model is achieved in that a kind of rotor assembling apparatus of Brushless DC motor, it is characterized in that: comprise body, and tool circuit board, pole piece, coil and axle bed, this axle bed is provided with positioning hole; Rotor is provided with the counterbore seat, and this counterbore seat has penetration hole, has inserted bearing in the counterbore seat again, and itself has permanent magnet rotor; Fixed block has larger-diameter cap head, and this cap subfacies is provided with bar portion and is articulated in the bearing and is combined in the positioning hole of axle bed.

Described axle bed is provided with by screw cap imbedded dispensing hole, reach described fixed block and have the screw section, and this screw section combines with nut.

Described axle bed is extended with column jecket, and this column jecket external diameter is with stator seat, circuit board, and this column jecket internal diameter forms in cascade ring and its and inserts positioning element again, and this fixed block has the screw section, and this screw section combines with the positioning element of inserting in the body column jecket.

Described bearing is inserted in the counterbore seat of rotor and with positioning piece and is fixed.

Described rotor has blade.

Described body is the housing of heat-dissipating fan.

The positioning hole of described axle bed is provided with the screw section.

Described fixed block forms the bolt shank shape, and has pin-joint part and screw section, is combined in the bearing by this pin-joint part, and is screwed togather in the positioning hole that is fixed on body by the screw section.

Owing to adopt such scheme: have the effect of assembling easily and fast.

See also appended graphic, with the utility model for below embodiment explanation:

Fig. 1 the utility model first embodiment's member exploded perspective view.

Fig. 2 the utility model first embodiment's combination situations sectional drawing.

Fig. 3 the utility model second embodiment's combination situations sectional drawing.

Fig. 4 the utility model the 3rd embodiment's assembly exploded perspective view.

Fig. 5 the utility model the 3rd embodiment's combination situations sectional drawing.

Fig. 6 commonly uses the combination situations sectional drawing of device.

Please read shown in Fig. 1,2, the utility model first preferred embodiment, it uses in the embodiment of axially wound coil and axial to air gap, mainly is to be made of members such as body 1, rotor 2, fixed blocks 3.

Body 1 can be known housings such as heat-dissipating fan, this body 1 is combined with members such as circuit board 11, pole piece 12, coil 13, and this body 1 is provided with the positioning hole 16 of tool screw section 15 by an axle bed 14, in the middle of this preferred embodiment, this screw section 15 is positioned at the inwall of positioning hole 16, supplies fixed block 3 combinations by this positioning hole 16.

Rotor 2 can be the impeller of known heat-dissipating fan, be provided with a counterbore seat 21 by its central position, this counterbore seat 21 has a penetration hole 22, assemble for bearing 23 by this counterbore seat 21, after bearing 23 is inserted the counterbore seat, and by locating pieces such as a C shape ring 24 location, penetration hole 22 can pass through for the fixed block 3 that is articulated in bearing 23; Rotor 2 itself is provided with known permanent magnet 25, blade 26.

Fixed block 3 forms the screw rod shape, it includes a cap head 31 greater than bar portion diameter, and this bar portion includes a pin-joint part 32 and screw section 33, wherein, pin-joint part 32 is for being used in combination for

bearing

23, and 33 of screw sections can be combined in the positioning hole 16 set screw sections 15 of body 1; For making fixed block 3 be easy to screw, cap head 31 top ends of this fixed block 3 can be provided with a word or cross slotted eye 34, therefore, as long as this fixed block 3 is passed in the bearing 23 that is fixed in rotor 2 set counterbore seats 21, and the rotation with this fixed block 3 promptly can be with rotor 2 windings at body 1, wherein the screw thread of this fixed block 3 can be selected the direction identical with rotating to be of rotor, or is stained with a bonding material at

fixed block

3 and 15 of screw sections, makes to fix 3 and can not deviate from.

Please read shown in Figure 3, its the utility model second preferred embodiment, mainly the axle bed 14 of body 1 is established one and be concentrically ringed dispensing hole 17 with positioning hole 16, this dispensing hole 17 can be inserted for a nut 18, and screw mutually with fixed block 3, this fixed block 3 screws direction with the screw thread of nut 18 and also is advisable with identical, or is fixed with bonding material again, and fixed block 3 can not be deviate from.

Please read shown in Figure 4, its utility model the 3rd preferred embodiment, it uses in the axial embodiment of windings and radial air gaps, includes members such as body 4, rotor 5, fixed block 6.

Body 4 can be known housings such as heat-dissipating fan, this body 4 is provided with a column jecket 44, column jecket 44 external diameters are with members such as stator seat 41, circuit board 42, column jecket 44 internal diameters then can supply fixed block 6 to pass through and be fixing, should fixing can establish internal thread part by column jecket 44 inwalls, or as shown in Figure 5, column jecket 44 internal diameters are formed cascade ring, insert and screw for positioning elements 43 such as nuts.

Rotor 5 can be the impeller of known heat-dissipating fan, be provided with a counterbore seat 51 by its central position, this counterbore seat 51 has a penetration hole 52, is assembled for bearing 53 by this counterbore seat 51, and being fixed on the location by locating pieces 54 such as C shape rings, perforation 52 can be passed through for the fixed block 6 that is articulated in bearing 53; Rotor 5 itself is provided with known permanent magnet 55, blade 56 fixed blocks 6 form the screw rod shape, it includes a cap head 61 greater than bar portion diameter, and this bar portion includes a pin-joint part 62, screw section 63 and connecting part 64, wherein, pin-joint part 62 is for being used in combination for bearing 53,63 of screw sections can be combined in the column jecket 44 set screw sections of body 4 or combine with

positioning element

43, and 64 of connecting parts are in order to use in conjunction with stator seat 41; For making fixed block 6 be easy to screw, cap head 61 end faces of this fixed block 6 can be established a word or cross slotted eye 65, therefore, as long as this fixed block 6 is passed the bearing 53 that is fixed in rotor 5 set counterbore seats 51, and promptly can be with rotor 5 windings at body 4, wherein with the rotation of this fixed block 6, the screw thread of this fixed block 6, can select to rotate to be identical direction, or be fixed, fixed block 6 can not be deviate from bonding material with rotor 5.

Brushless DC motor of the present utility model, rotor can be easily by winding, and the counterbore seat that only needs bearing is inserted at rotor gets final product, and with fixed block the axle bed that rotor is fixed on body is got final product again, on the whole, has the effect of assembling easily and fast.

The utility model can not depart under the main spirit and feature, implements with other different form.Therefore, above-mentioned preferred embodiment is just enumerated by way of example, and it should be considered as restriction of the present utility model.Scope of the present utility model is defined by claim, but not is defined by the content of specification.The variation or the modification that belong to the equivalence of claim all are to fall within scope of the present utility model.

Claims

1, a kind of rotor assembling apparatus of Brushless DC motor is characterized in that: comprise body, and tool circuit board, pole piece, coil and axle bed, this axle bed is provided with positioning hole; Rotor is provided with the counterbore seat, and this counterbore seat has penetration hole, has inserted bearing in the counterbore seat again, and itself has permanent magnet rotor; Fixed block has larger-diameter cap head, and this cap subfacies is provided with bar portion and is articulated in the bearing and is combined in the positioning hole of axle bed.

2, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: described axle bed is provided with by screw cap imbedded dispensing hole, reach described fixed block and have the screw section, and this screw section combines with nut.

3, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: described axle bed is extended with column jecket, this column jecket external diameter is with stator seat, circuit board, this column jecket internal diameter forms in cascade ring and its and inserts positioning element again, reach this fixed block and have the screw section, this screw section combines with the positioning element of inserting in the body column jecket.

4, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: described bearing is inserted in the counterbore seat of rotor and with positioning piece and is fixed.

5, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: described rotor has blade.

6, according to the described brushless direct-current of claim 1, the rotor assembling apparatus of motor is characterized in that: described body is the housing of heat-dissipating fan.

7, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: the positioning hole of described axle bed is provided with the screw section.

8, according to the rotor assembling apparatus of the described Brushless DC motor of claim 1, it is characterized in that: described fixed block forms the bolt shank shape, and have pin-joint part and screw section, be combined in the bearing, and screw togather in the positioning hole that is fixed on body by the screw section by this pin-joint part.