CN201163736Y

CN201163736Y - Motor

Info

Publication number: CN201163736Y
Application number: CNU2007201993695U
Authority: CN
Inventors: 萧呈方; 周兵; 李珉
Original assignee: Shanghai Moons Electric Co Ltd
Current assignee: Shanghai Moons Electric Co Ltd
Priority date: 2007-12-18
Filing date: 2007-12-18
Publication date: 2008-12-10
Anticipated expiration: 2017-12-18
Also published as: WO2009079935A1

Abstract

The utility model provides a motor. The motor comprises a motor shell, a rotor, an oil-containing bearing, a stator, a rotary shaft, fixed pieces of the rotor and a rotary shaft, wherein the oil-containing bearing is used to arrange the rotary shaft of the motor on the motor shell. The motor is characterized in that the motor shell is provided with a convex hull provided with a pore, and the oil-retaining bearing is arranged in the convex hull and is capable of extending out of the pore. The oil-retaining bearing of the motor has an oil immersion volatilization area which is greatly reduced, an oil reservation mechanism is formed, so that the service life of the motor is prolonged.

Description

Motor

Technical field

The utility model relates to a kind of motor, and this motor comprises motor case and oiliness bearing especially, and this oiliness bearing is used to be provided with the rotating shaft of motor in this motor case.

Background technology

The fixed form of the oiliness bearing of known motor is as follows:

1. the oiliness bearing 1 of motor shown in Figure 1 is designed to T-shape, is fixed on motor case or the panel 3 by the riveted joint mode.Its shortcoming is that mainly oiliness bearing 1 is complex-shaped, and oil content is on the low side; Most of volume is exposed in the air, and immersion oil volatilizees easily, and bearing 1 surface gets rusty easily, and influences motor life and outward appearance; The easy cumulative limit of the combination of panel and motor case 3 influences the concentricity of bearing 1.

2. as shown in Figure 2, motor case or panel designs are octopus mouth structure 2, and cylindrical oiliness bearing 4 close-fittings are pressed into this octopus mouth structure 2 and fix.Its shortcoming is that oiliness bearing 4 parts are exposed in the air outward, and immersion oil volatilizees easily, and bearing 4 surfaces get rusty easily, and influence motor life and outward appearance; Cause bearing 4 displacements during the motor shock test easily.

In addition, the fixture of motor rotor and axle core is at present commonly used punching press iron plate and a sintered powder etc., and the punching press iron plate is considered because of obtaining the aspect from cost and material, and thickness is often thinner, cause the adhesion of a core and rotor less than normal, the axle core easily was shifted when motor was subjected to axial impact; Sintered powder low price and adhesion are good, but moment of inertia is big, and motor stepping angular error increases.

The utility model content

Technical problem to be solved in the utility model is that the fixed structure to the oiliness bearing of motor improves, to prolong life-span, the simplified manufacturing technique of motor.

In order to solve described technical problem, motor of the present utility model comprises the fixture of motor case, oiliness bearing, rotor, stator, rotating shaft and this rotor and this rotating shaft, this oiliness bearing is used to be provided with the rotating shaft of motor in this motor case, it is characterized in that, this motor case has convex closure, this convex closure has aperture, and this oiliness bearing is arranged in this convex closure, and this rotating shaft can be stretched out from described aperture.

After adopting above-mentioned technical scheme, the oiliness bearing major part of motor is coated by described convex closure, thereby the area of immersion oil volatilization reduces greatly, forms a kind of guarantors oil mechanism, thus prolongation bearing life prolongation motor useful life.

The further characteristics of motor of the present utility model are, this fixture is the fixture that is stretched and formed by tagger, this fixture has first fixed part and second fixed part that extends vertically, the first fixed part tight fit of this rotor and this fixture, the second fixed part tight fit of this rotating shaft and this fixture, thus this rotor and this rotating shaft are by this fixture relative fixed.Owing to adopt this fixture, increased the constant intensity of rotating shaft and rotor, but cost and moment of inertia increase seldom.

Description of drawings

Fig. 1 is in the existing motor, T type oiliness bearing assembling schematic diagram;

Fig. 2 is in the existing motor, octopus mouth structure oiliness bearing assembling schematic diagram;

Fig. 3 is a motor assembling schematic diagram of the present utility model;

Fig. 4 is the schematic diagram that is used for the fixture of rotor shaft connection of the present utility model;

Fig. 5 is the assembling schematic diagram of rotor shaft of the present utility model.

Embodiment

To shown in Figure 5, in one embodiment, motor case 10 is formed with location convex closure 20 as Fig. 3, and the centre of location convex closure 20 is provided with an aperture 201, and for rotating shaft 50 (as shown in Figure 5) the location usefulness of motor, oiliness bearing 30 close-fittings are pressed in the convex closure 20 of location.In the process of making motor, motor case 10 directly at central authorities' stretched location convex closure 20, dashes an aperture shaft in the middle of location convex closure 20 when punch forming, and group is pressed into oiliness bearing 30 close-fittings in the convex closure immediately.

Above-mentioned motor has such characteristics: oiliness bearing 30 is in the space of almost completely sealing, also be that the circumference of oiliness bearing 30 and upper surface are positioned that convex closure 20 encases and its endoporus cooperates with rotating shaft 50 minim gaps, have only in the space that is exposed at stator 70 and shell 10 sealings outside the lower surface, the area of immersion oil volatilization reduces greatly, form a kind of guarantor oil mechanism, prolong motor useful life thereby prolong bearing life; In addition, oiliness bearing 30 can be reduced to the cylindrical of easy production, and the simple and oil content of processing makes bearing life increase and reduce the oiliness bearing cost relatively apparently higher than the T-shape oiliness bearing; Moreover oiliness bearing 30 almost completely is enclosed in the inside of motor shell 10, and whether it gets rusty all can not influence the motor outward appearance, makes the motor can be more and more not ugly along with the prolongation of service time; Secondly, because of motor shell 10 and location convex closure 20 are that one stretches, motor shell 10 inboard controllabilitys with the concentricity of locating convex closure 20 inboards strengthen, thereby after making the motor assembling, oiliness bearing 30 can keep concentricity preferably with stator 70 inboards, it is bad to reduce stuck, different sound etc., also makes the assembly accumulation tolerance of panel and motor shell 10 that follow-up assembling is not produced any influence, has simplified assembly technology.

In another embodiment, as shown in Figure 4 and Figure 5, the part 40 that is connected and fixed of motor rotor 60 and rotating shaft 50 adopts the tagger stretching to form, fixture 40 have vertically first fixed part 401 and second fixed part 402 vertically, first fixed part 401 and rotor 60 tight fits, second fixed part 402 and rotating shaft 50 tight fits, thereby rotor 60 and rotating shaft 50 relative fixed, because first fixed part 401 and second fixed part 402 are in axial elongation, increased regular length with respect to the existing fixed part, the contact area of rotor 60 and rotating shaft 50 and fixture 40 is increased greatly, increased constant intensity, but cost and moment of inertia increase seldom.

Claims

1. motor, the fixture that comprises motor case, oiliness bearing, rotor, stator, rotating shaft and this rotor and this rotating shaft, this oiliness bearing is used to be provided with the rotating shaft of motor in this motor case, it is characterized in that, this motor case has convex closure, this convex closure has aperture, and this oiliness bearing is arranged in this convex closure, and this rotating shaft can be stretched out from described aperture.

2. motor as claimed in claim 1 is characterized in that, described oiliness bearing is the column type oiliness bearing.

3. motor as claimed in claim 1 is characterized in that, the periphery of described oiliness bearing and an end face are coated by described convex closure.

4. motor as claimed in claim 1, it is characterized in that, this fixture is the fixture that is stretched and formed by tagger, this fixture has first fixed part that extends vertically and second fixed part that extends vertically, the first fixed part tight fit of this rotor and this fixture, the second fixed part tight fit of this rotating shaft and this fixture, thus this rotor and this rotating shaft are by this fixture relative fixed.