CN1281284A

CN1281284A - Electric motor with improved locating structure of rotor

Info

Publication number: CN1281284A
Application number: CN 99109650
Authority: CN
Inventors: 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1999-07-02
Filing date: 1999-07-02
Publication date: 2001-01-24
Anticipated expiration: 2019-07-02
Also published as: CN1101614C

Abstract

A motor with improved locating structure of rotor is disclosed. A symmetrical magnetic conducting layer is on one surface of circuit board and the Hall induction element and control part are on the surface without magnetic conducting layer. An axle tube is linked with its outer diameter in the hole of stator winding holder and the bearing is arranged in its inner hole. A stop pare is further sleeved at one end of said inner hole. The rotor is centrally installed to the bearing in the axle tube by its axle whose one end is in contact with said stop part. The internal surface of rotor has an annular permanent magnet opposite to the magnetic conducting layer of circuit board. Its advantages are little friction between stator and rotor and smooth running.

Description

The motor of improvement locating structure of rotor

The present invention relates to a kind of motor.

At present, as shown in Figure 5, a kind of structure of known motor, mainly be to be provided with a central siphon 81 by shell 80, these central siphon 81 external diameters are combined with circuit board 82, stator coil seat 83, central siphon 81 internal diameters are provided with bearing 84, drive for the axle center 86 of rotors 85 by bearing 84 and to connect, in order to make rotor 85 fixing, be provided with snapping setting element 89 snappings location such as oil sealing 87 and packing ring 88 and C shape clasp by bearing 84 upper and lowers of axle center 86 external diameters.

Above-mentioned known structure, on making, install oil sealing, packing ring and do not have the fixing procedure of part with snapping, simultaneously, because oil sealing, packing ring and fastener components have only very little diameter, so, be inconvenient on assembly working, and rotor when rotated, because the setting of upper and lower oil sealing, packing ring, so the rubbing surface of rotor rotation increases, therefore can produce friction noise and can reduce motor useful life.

In view of this, the purpose of this invention is to provide a kind of motor of improveing locating structure of rotor, it is with in the bearing of rotor pivot in central siphon and the magnetic layer on the permanent magnet rings of rotor and the circuit board attracts at intervals mutually, an end bearing of rotor makes the rotation of rotor held stationary on the top bracing member of central siphon again.

The object of the present invention is achieved like this: a kind of motor of improveing locating structure of rotor, comprise stator coil seat, circuit board, central siphon and rotor, wherein the stator coil seat has pole piece and is wound with coil and the centre position is provided with a hole, it is characterized in that: circuit board is combined under the stator coil seat, on one surface of this circuit board the magnetic layer of symmetric shape is set, is not provided with hall sensing element and control piece and have at circuit board on the surface of magnetic layer; Central siphon is connected in the hole of stator coil seat with external diameter, and bearing is set in its endoporus, again a sheathed top bracing member in endoporus one end; Rotor is articulated in the bearing in the central siphon with its axle center, and the top bracing member in the end apical grafting central siphon in this axle center, and to be provided with an annular permanent magnnet relative with the magnetic layer interval on the circuit board for rotor inner wall in addition.

Axle center one end of described rotor is pointed for circle.

The built-in pad of described top bracing member, and with axle center one end in contact of rotor.

A kind of motor of improveing locating structure of rotor, it comprises stator coil seat, balancing patch, circuit board, central siphon and rotor, wherein the stator coil seat has pole piece and is wound with coil and the centre position is provided with a hole, it is characterized in that: offer a hole on the circuit board and also be provided with hall sensing element and control piece thereon; Central siphon is by the hole of external diameter cross-under stator coil seat, balancing patch, circuit board, and the central siphon internal diameter is provided with bearing, and the also sheathed top bracing member of central siphon one end; Rotor is articulated in the bearing with the one axle center, axle center one end and top bracing member apical grafting, rotor also are provided with a ring permanent magnet, and this permanent magnet and balancing patch become discontiguous and correspondingly inhale mutually, in addition, balance is to be that the center becomes symmetric shape and made by magnetic conductive material by a hole.

Insert a pad in the described top bracing member, this pad is the end apical grafting that the axle center was made and be subjected to high-abrasive material.

It is pointed that axle center one end of described rotor is split into circle.

Because employing such scheme: friction reduces between rotor and stator, and noise is little simultaneously, long service life, and the rotor running is steady, and processing and assembling are also easy.

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the first embodiment of the invention exploded view;

Fig. 2 is the first embodiment of the invention combination section;

Fig. 3 is the second embodiment of the invention exploded view;

Fig. 4 is the second embodiment of the invention combination section;

Fig. 5 commonly uses the tectonic association profile;

Among the figure: 1. 52. short slots, 6. circuit boards, 61. holes, 42. core seats, 43. permanent magnets, 5. balancing patches, 51. holes, 22. magnetic layer 23. hall sensing elements, 24. control element 3. central siphons, 31. bearing 32. top bracing members, 33. pad 4. rotors, 41. axle center, 2. circuit boards, 21. holes, stator coil seat 11. pole piece 12. coils, 13. hole, 62. hall sensing elements, 63. control pieces, 7. fixtures

As shown in Figure 1, first embodiment is made of members such as stator coil seat 1, circuit board 2, central siphon 3, rotors 4, wherein:

Stator coil seat 1 can be known various coil holders, and it comprises pole piece 11, coil 12 and combines with central siphon 3 with a hole.

Circuit board 2 can be combined in central siphon 3 by a hole 21, a superficial layer of this circuit board 2 is provided with magnetic layer 22, this magnetic layer 22 is to become the shape of symmetry and do not contact with the permanent magnet 43 of rotor 4, but correspondence is inhaled mutually, and the circuit board 2 beyond this magnetic layer 22 and another surface form insulating barrier, are provided with hall sensing element 23 and other control elements 24 (as shown in Figure 2) in this insulating barrier position.

Central siphon 3 is located in the hole 13,21 of stator coil seat 1, circuit board 2 by external diameter, central siphon 3 internal diameters are installed with bearing 31, this bearing 31 can be that non-ball spivot that the antifriction material makes holds and an end of central siphon 3 is provided with top bracing member 32, support the axle center 41 of rotor 4 to pivot by bearing 31, by the axle center 41 one end apical graftings of top bracing member 32 for rotor 4, top bracing member 32 is made by the antifriction material.

Rotor 4 extends an axle center 41 by core seat 42 and is articulated in bearing 31 pivots, but an end in this axle center 41 forms the pointed and apical grafting of circle at top bracing member 32, so, the friction that axle center 41 and top bracing member are 32 can form minimum, rotor 4 itself is provided with a ring permanent magnet 43, and the polarity of coming sensing permanent magnet 43 with hall sensing element 23, and send signal to change the current polarity of stator coil; This permanent magnet 43 more can not contact with the magnetic layer 22 of circuit board 2, but correspondence is inhaled mutually.

As shown in Figure 2, central siphon 3 is fixed on the fixture 7, this fixture 7 can be the housing of heat emission fan, these central siphon 3 external diameters are in conjunction with stator coil block set 1, circuit board 2, central siphon 3 internal diameters are provided with bearing 31, one end of central siphon is arranged with

top bracing member

32,31 on bearing is articulated with the axle center 41 of rotor 4, one end in this axle center 41 then apical grafting at top bracing member 32, and because the permanent magnet 43 of rotor 4 has corresponding power of inhaling mutually with the magnetic layer 22 of circuit board 2, therefore whole rotor 4 has the magnetic layer 22 of being inhaled and leveling off to circuit board 2 downwards, and for the core seat 42 that makes rotor 4 not because of rotor by under inhale into conflict bearing 31, therefore, borrow at central siphon 3 sheathed top bracing members 32 and shore axle center 41 upwards, simultaneously, make on the whole rotor 4 and move, form the permanent magnet 43 of rotor 4 and the magnetic layer on the circuit board 2 and keep a spacing, and the core seat 42 that the makes rotor 4 simultaneously bearing 31 of also can not conflicting, so, rotor 4 promptly is formed on the rotation that becomes to locate orbit determination under the minimum frictional force.

As shown in Figure 3, second embodiment comprises members such as stator coil seat 1, central siphon 3, rotor 4, balancing patch 5, circuit board 6, wherein:

Position line ring support 1 can be known various coil holders, it include pole piece 11, coil 12 and with a hole 13 by central siphon 3 combinations.

Central siphon 3 is located in the hole 13 of stator coil seat 1 by external diameter and more wears the

hole

51,61 of knot at balancing patch 5, circuit board 6, central siphon 3 internal diameters hold into bearing 31 is arranged, central siphon 3 one ends are provided with top bracing member 32, support the axle center 41 of rotor 4 to pivot by bearing 31, insert the pad 33 more than a slice on this top bracing member 32, this pad 33 is made by the antifriction material, by pad 33 by the axle center 41 1 end apical graftings of rotor 4, the sheet number of pad 33 can be changed, in order to adjust the gap of 5 of rotor 4 and balancing patches.

Rotor 4 extends an axle center 41 by core seat 42 and is articulated in bearing 31 pivots, but an end in this axle center 41 forms the pointed and apical grafting of circle at top bracing member 32 or pad 33, so, axle center 41 can form minimum with the friction of top bracing member 32 or pad 33, rotor itself is provided with a ring permanent magnet 43, and the polarity of coming sensing permanent magnet 43 with hall sensing element 62, and send signal to change the current polarity of stator coil seat 1, this permanent magnet 43 more can not contact with balancing patch 5, but correspondence is inhaled mutually.

Balancing patch 5 is made by magnetic conductive material, and be provided with a hole 51 for central siphon 3 combinations, this balancing patch 5 is done symmetric design by its hole 51, can form the short slot 52 of symmetry, this short slot 52 can be provided with for hall sensing element 62, and this balancing patch 5 also can correspondingly be inhaled mutually with 43 one-tenth of the permanent magnets of rotor 4 are discontiguous.

Circuit board 6 is provided with hole 61 and combines with central siphon 3, and this circuit board 6 is provided with hall sensing element 62 and other control pieces 63.

As shown in Figure 4, central siphon 3 ripples are fixed on a fixture 7, this fixture 7 can be housings such as heat emission fan, these central siphon 3 external diameters are in conjunction with phase stator coil seat 1, balancing patch 5, circuit board 6, central siphon 3 internal diameters are provided with bearing 31, central siphon 3 one ends are provided with top bracing member 32, this top bracing member 32 is installed with

pad

33, and 31 on bearing articulates the axle center 41 of rotor 4, an end in this axle center 41 then apical grafting at pad 33, and because the permanent magnet 43 and balancing patch 5 of rotor 4, and do not inhaled into conflict bearing 31 down because of rotor for the core seat 42 that makes rotor, and therefore borrow and shore axle center 41 at central siphon 3 sheathed top bracing members 32 and make progress, make simultaneously and move on the whole rotor 4, the permanent magnet 43 that forms rotor 4 keeps a spacing with balancing patch 5, and the core seat 42 of rotor 4 bearing 31 of also can not conflicting simultaneously, so, rotor 4 promptly forms the rotation that can become to locate orbit determination under minimum frictional force.

In sum, effect of the present invention is that the axle center of rotor is when being articulated in bearing, because the permanent magnet of rotor is led with the magnetic conduction of circuit board or balancing patch has this suction mutually, therefore, rotor is the strength that has by inhaling down, and because an end in axle center withstands on top bracing member or the pad, make on the whole rotor and move, therefore, the permanent magnet of rotor can the contact equilibrium sheet or magnetic layer and core seat also can not paste contact bearing, therefore, rotor has and stable be supported as the orbit determination rotation and the Rotation Noise of motor is reduced, and promotes motor useful life.

Claims

1, a kind of motor of improveing locating structure of rotor, comprise stator coil seat, circuit board, central siphon and rotor, wherein the stator coil seat has pole piece and is wound with coil and the centre position is provided with a hole, it is characterized in that: circuit board is combined under the stator coil seat, on one surface of this circuit board the magnetic layer of symmetric shape is set, is not provided with hall sensing element and control piece and have at circuit board on the surface of magnetic layer; Central siphon is connected in the hole of stator coil seat with external diameter, and bearing is set in its endoporus, again a sheathed top bracing member in endoporus one end; Rotor is articulated in the bearing in the central siphon with its axle center, and the top bracing member in the end apical grafting central siphon in this axle center, and to be provided with an annular permanent magnnet relative with the magnetic layer interval on the circuit board for rotor inner wall in addition.

2, by the motor of the described improvement locating structure of rotor of claim 1, it is characterized in that: axle center one end of described rotor is pointed for circle.

3, by the motor of the described improvement locating structure of rotor of claim 1, it is characterized in that: the built-in pad of described top bracing member, and with axle center one end in contact of rotor.

4, a kind of motor of improveing locating structure of rotor, it comprises stator coil seat, balancing patch, circuit board, central siphon and rotor, wherein the stator coil seat has pole piece and is wound with coil and the centre position is provided with a hole, it is characterized in that: offer a hole on the circuit board and also be provided with hall sensing element and control piece thereon; Central siphon is by the hole of external diameter cross-under stator coil seat, balancing patch, circuit board, and the central siphon internal diameter is provided with bearing, and the also sheathed top bracing member of central siphon one end; Rotor is articulated in the bearing with the one axle center, axle center one end and top bracing member apical grafting, rotor also are provided with a ring permanent magnet, and this permanent magnet and balancing patch become discontiguous and correspondingly inhale mutually, in addition, balance is to be that the center becomes symmetric shape and made by magnetic conductive material by a hole.

5, by the motor of the described improvement locating structure of rotor of claim 4, it is characterized in that: insert a pad in the described top bracing member, this pad is the end apical grafting that the axle center was made and be subjected to high-abrasive material.

6, by the motor of the described improvement locating structure of rotor of claim 4, it is characterized in that: it is pointed that axle center one end of described rotor is split into circle.