CN2324692Y

CN2324692Y - Metal tube and its bearing structure for radiating fan motor

Info

Publication number: CN2324692Y
Application number: CN 98208602
Authority: CN
Inventors: 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1998-03-30
Filing date: 1998-03-30
Publication date: 1999-06-16
Anticipated expiration: 2008-03-30

Abstract

The utility model relates to a metal pipe and a bearing structure for a radiating fan motor, comprising a shell seat provided with a shaft seat which is combined with a metal shaft pipe of a stator seat. The utility model comprises a stator seat which is combined on the shell seat by a metal shaft pipe. The outer diameter of the metal shaft pipe is combined with a circuit board, a coil and a pole piece. The inner diameter of the metal shaft pipe is tightly matched with a locating sleeve or an oilless bearing to be fixed. Both sides of the locating sleeve are provided with ball bearings which are matched in a loose mode. The utility model comprises a rotor which is pivoted with the ball bearing or the oilless bearing by a central shaft. The central shaft is provided with a ring groove which is buckled with a locating element. The locating element is stuck with the outer lateral end of one ball bearing of the central shaft, and a rotator body or a flange is abutted at the outer lateral end of the other ball bearing.

Description

The metal tube of motor of heat-dissipating fan and bearing arrangement thereof

The utility model relates to a kind of metal tube and bearing arrangement thereof of motor of heat-dissipating fan.

The Taiwan patent announcement relevant with the utility model has No. 310782 " the bearing sleeve structure of radiator fan " and No. 314286 " brush DC fan new construction ", it mainly is the direct integrally formed central siphon of shell block, this central siphon and shell block are all plastic material, and the central siphon content is provided with bearing, the plastic shaft bore must be provided with stop section or voussoir, with rigid bearing.

Disclosed by above-mentioned patent case, produce high heat when its plastic material central siphon that is installed with rigid bearing can rotate because of heat emission fan and form and expand with heat and contract with cold, over time, can make the bearing that is fixed in the plastics central siphon slightly pine move, cause the central shaft hole deflection of support rotor, produce noise when heat emission fan is rotated and shorten useful life.

The purpose of this utility model is, in order to overcome above-mentioned shortcoming, a kind of metal central siphon and bearing arrangement thereof of motor of heat-dissipating fan is provided, can make the more supported and rotation of its centre of rotor axle, can not make the central shaft skew because of expanding with heat and contract with cold, and reduce Rotation Noise and increase useful life.

The purpose of this utility model is achieved in that metal tube and the bearing arrangement thereof that a kind of motor of heat-dissipating fan promptly is provided, and it comprises: shell block, and it is provided with the metal shaft pipe jointing of axle bed and stator seat; Stator seat, by a metal shaft pipe jointing on described shell block, described metal shaft external diameter of pipe combined circuit plate, coil and pole piece; The internal diameter of described metal central siphon becomes to be tightly fixed with a positioning sleeve, and the positioning sleeve both sides are provided with the ball bearing of loose fit; Rotor, be articulated in the ball bearing of described stator seat by a central shaft, described central shaft is provided with annular groove and setting element snapping, is bonded in the outboard end of one ball bearing by described setting element, and is withstood on the outboard end of another ball bearing by described rotor body or its flange.

The utility model also provides a kind of metal tube and bearing arrangement thereof of motor of heat-dissipating fan, and it comprises: shell block, and it is provided with the metal shaft pipe jointing of axle bed and stator seat; Stator seat, by a metal shaft pipe jointing on described shell block, metal shaft external diameter of pipe combined circuit plate, coil and pole piece; Described metal shaft bore and an above oiliness bearing are tightly fixed; Rotor is articulated in described oiliness bearing internal diameter by central shaft, and described central shaft has annular groove and protrudes at the oiliness bearing outside, described annular groove and described setting element snapping.

The advantage of the utility model device is, can make the more supported and rotation of centre of rotor axle, can not make the central shaft skew because of expanding with heat and contract with cold, and can reduce Rotation Noise and increase useful life.

Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail, wherein:

Fig. 1 is the first embodiment three-dimensional exploded view of the present utility model;

Fig. 2 is the first embodiment combination section of the present utility model;

Fig. 3 is the second embodiment combination section of the present utility model.

Label among the figure is respectively:

1 housing, 10 airtight planes, 11 axle beds

2 stator seats, 21 metal central siphons, 22 circuit boards, 23 coils

24 pole pieces, 25 ball bearings, 26 positioning sleeves, 27 setting elements

3 rotors, 31 central shafts, 32 annular grooves, 33 flanges

34 oiliness bearings, 35 packing rings

See also shown in Figure 1ly, it is the utility model one preferred embodiment, and it includes members such as housing 1, stator seat 2, rotor 3.

Shell block 1 can be different shape and material, mainly be to be provided with an axle bed 11 at this shell block 1, can be by this axle bed 11 for metal central siphon 21 combinations of stator seat 2, it can adopt urgent combination or with various fixed form combinations such as stalemate agents, the shell block 1 of scope is own around the axle bed 11, can form airtight plane 10 or hollow hole, as shown in Figure 2, oil storage space can be done in the airtight plane 10 that forms, and this axle bed 11 also can form hole earlier, after rotor 3 assemblings, sealed into airtight plane 10 with plate again.

Stator seat 2 can be made by various known manufactures, it includes metal central siphon 21, circuit board 22, coil 23 and pole piece 24, the internal diameter of metal central siphon 21 has been inserted two ball bearings 25, firmly support the central shaft 31 of rotor 3 and connection versatilely by this two ball bearing 25, two ball bearings 25 become loose fit with metal central siphon 21 internal diameters, for making this two ball bearing 25 have positioning action, between two ball bearings 25, insert a positioning sleeve 26, and the central shaft 31 that can be buckled in rotor 3 in the bottom side of bottom ball bearing 25 with setting elements 27 such as C shape rings, and 26 one-tenth tight fit modes of this positioning sleeve are fixed on the internal diameter of metal central siphon 24, therefore, but rotor 3 can be supported and position rotating.

Rotor 3 is articulated on two ball bearings 25 that place metal central siphon 21 internal diameters by a central shaft 31, and be provided with recessed annular groove 32 for setting element 27 snappings by central shaft 31, the outboard end of this two ball bearing 25 is respectively by setting element 27 and rotor 3 or its flange 33 roof pressures own, therefore, rotor 3 can be restricted to position rotating.

See also shown in Figure 2, the combination situations of its utility model first embodiment, after the central shaft 31 of rotor 3 is combined with two ball bearings 25 and positioning sleeve 26, its element 27 that is positioned earlier is fixing, this rotor 3 can be by positioning sleeve 26 by the powerful internal diameter that is pressed into metal

central siphon

21,24 one-tenth tight fit modes of positioning sleeve 26 and metal central siphon are fixed, therefore, rotor 3 can be restricted to position rotating, and between rotor 3 and the metal central siphon 21 owing to be provided with ball bearing 25, therefore, the rotation of rotor 3 can be more smooth and easy.

See also shown in Figure 3, it is the utility model second preferred embodiment, between metal central siphon 21 internal diameters and rotor 3 central shafts 31, filled an above oiliness bearing 34, the central shaft 31 that this oiliness bearing 34 is nested with earlier at rotor 1, and and be with a packing ring 35 between rotor 3 itself or its flange 33, this packing ring 35 can be materials such as rubber, oiliness bearing 34 quilt cover postpones, be positioned element 27 of its other end is fixing, therefore, oiliness bearing 34 forms the central shaft 31 that is fixed on rotor 3, this oiliness bearing 34 can be pressed into the internal diameter of metal central siphon 21 by brute force, become the tight fit mode to fix with metal central siphon 21 internal diameters, rotor 3 also can be supported and position rotating.

In addition, in the present embodiment, scope also can form hole around the axle bed 11 of shell block 1, oiliness bearing 34 can directly be fixed on metal central siphon 21 internal diameters earlier, place pivot joint for the central shaft 31 of rotor 3 again by oiliness bearing 34 internal diameters, and setting element 27 can be buckled in the central shaft 31 of rotor 3, also can reach assembling effect by shell block 1 saturating empty hole, the hole of its shell block 1 can be sealed, to be formed with the oil storage space on airtight plane 10.

Claims

1, a kind of metal tube of motor of heat-dissipating fan and bearing arrangement thereof is characterized in that, it comprises: shell block, and it is provided with the metal shaft pipe jointing of axle bed and stator seat; Stator seat, by a metal shaft pipe jointing on described shell block, described metal shaft external diameter of pipe combined circuit plate, coil and pole piece; The internal diameter of described metal central siphon becomes to be tightly fixed with a positioning sleeve, and the positioning sleeve both sides are provided with the ball bearing of loose fit; Rotor, be articulated in the ball bearing of described stator seat by a central shaft, described central shaft is provided with annular groove and setting element snapping, is bonded in the outboard end of one ball bearing by described setting element, and is withstood on the outboard end of another ball bearing by described rotor body or its flange.

2, a kind of metal tube of motor of heat-dissipating fan and bearing arrangement thereof is characterized in that, it comprises: shell block, and it is provided with the metal shaft pipe jointing of axle bed and stator seat; Stator seat, by a metal shaft pipe jointing on described shell block, metal shaft external diameter of pipe combined circuit plate, coil and pole piece; Described metal shaft bore and an above oiliness bearing are tightly fixed; Rotor is articulated in described oiliness bearing internal diameter by central shaft, and described central shaft has annular groove and protrudes at the oiliness bearing outside, described annular groove and described setting element snapping.

3, by the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 2, it is characterized in that the described oiliness bearing other end is provided with packing ring and bonding with rotor.

4, by the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 3, it is characterized in that described packing ring is an elastomeric material.

By the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 1, it is characterized in that 5, scope forms airtight plane around the set axle bed of described shell block.

By the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 2, it is characterized in that 6, scope forms airtight plane around the set axle bed of described shell block.

By the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 1, it is characterized in that 7, scope forms the hole of sky around the set axle bed of described shell block.

By the metal tube and the bearing arrangement thereof of the described motor of heat-dissipating fan of claim 2, it is characterized in that 8, scope forms the hole of sky around the set axle bed of described shell block.