CN201063482Y

CN201063482Y - Miniature motor

Info

Publication number: CN201063482Y
Application number: CNU2007201210801U
Authority: CN
Inventors: 肖鸿平
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-22
Filing date: 2007-06-22
Publication date: 2008-05-21
Anticipated expiration: 2017-06-22

Abstract

The utility model discloses a miniature motor which comprises a shell, a rotor, a stator and a rotating shaft, wherein, the rotor and the rotating shaft are fixed into a whole, the rotating shaft is arranged on two bearings which are fixed on the shell. The utility model has the characteristics that: a bearing of the output side of the rotating shaft is a globe bearing, while a bearing at the backshaft end of the rotating shaft is a plane bearing. A rotating shaft output terminal of the miniature motor of the utility model has good harmony performance with outside, and easily achieves adjustment combination with the outside, so that the wear degree of the bearings can be light, and the internal stress of the rotating shaft is small; moreover, the utility model can control the whole position of the rotating shaft to be stable, so that the whole position of the rotating shaft can be prevented from deviation of wider range, and a gap between the stator and the rotor is more stable, and the rotor is prevented from contacting the stator and locking.

Description

Micromachine

Technical field

The utility model belongs to a kind of micromachine, relates in particular to a kind of micromachine as auto parts machinery.

Background technology

Micromachine is applied to for example be applied in the water pump of vehicle glass purging system in each function system of extensive automobile.Existing micromachine as auto parts machinery, characteristics such as have that output torque is big, volume is little, stator and rotor clearance are little, the rotating shaft of this class motor mainly contains two kinds of installation forms, and first kind is that plane bearing is all adopted at two; Second kind is that spherical bearing is all adopted at two.The advantage of above-mentioned first kind of installation form is that two ends are more stable, stator and rotor relative fixed, and its shortcoming is that the machine shaft coordination performance is poor, is difficult to adjust, and so bearing friction power is big, bearing wear is serious, the internal stress that rotating shaft produces is big; The pluses and minuses of second kind of installation form are then just opposite with first kind, its advantage is that the machine shaft coordination performance is good, adjust easily, so bearing friction power is less, the bearing wear degree is lighter, the internal stress that rotating shaft produces is less, and its shortcoming then is rotating shaft two ends less stable, and stator and rotor clearance are relatively more unstable.Because micromachine stator and rotor clearance are little, if stator and rotor clearance instability cause rotor to touch stator easily even stuck problem occurs.

Summary of the invention

Main purpose of the present utility model is to provide a kind of micromachine at the above-mentioned deficiency of prior art, and its machine shaft has good adjustment performance, and stator and rotor clearance are more stable.

For achieving the above object, micromachine of the present utility model comprises casing, rotor, stator, rotating shaft, rotor and rotating shaft are fixed as one, rotating shaft is installed on the two bearings, two bearings is fixed on the casing, its main feature is that the bearing of rotating shaft outlet side is a spherical bearing, and the bearing of axle head is a plane bearing after the rotating shaft.

The utlity model has following advantage and effect:

1, the utility model micromachine, because the bearing of rotating shaft outlet side is a spherical bearing, thereby the machine shaft output is better with extraneous coordination performance, reaches adjustment with the external world easily and cooperates, and makes the bearing wear degree light, the rotating shaft internal stress is little.On the other hand, because the bearing of axle head is a plane bearing behind machine shaft, so may command rotating shaft integral position is more stable, makes the rotating shaft integral position deviation by a relatively large margin can not occur, make stator and rotor clearance more stable, rotor is not easy and stator touching, stuck.In a word, the rotating shaft of the utility model motor reaches an end stablizes and the combination of other end adjustment better performances, and through actual test, univers parameter is up to standard, and is functional.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the left view of micromachine shown in Figure 1.

Fig. 3 is the right view of micromachine shown in Figure 1.

Embodiment

Fig. 1, Fig. 2, micromachine shown in Figure 3 comprise casing 2, rotor 9, stator 8, rotating shaft 1, rotor 9 is fixed as one with rotating shaft 1, the two ends of rotating shaft are installed on the bearing, and the bearing 4 of rotating shaft outlet side is a spherical bearing, and the bearing 5 of axle head is a plane bearing after the rotating shaft.The bearing 5 of axle head is fixed on the casing 2 after the bearing 4 of rotating shaft outlet side and the rotating shaft.

Fig. 2, shown in Figure 3, the shell 2 of micromachine adopts flattened round, compares with the positive circular housing of traditional micromachine like this, has the assembling and positioning characteristic of accurate.

The plug type power joint that the tradition micromachine adopts, so easily displacement, loose contact, deadlock height.Shown in Figure 3, the power connection of the micromachine of present embodiment is the cloudy interpolation block 13 that is arranged on casing rear end, thereby is difficult for displacement, and contact is good, and fault is low.

The foregoing description is through the actual test in exchange assembling back, and parameters is up to standard, and is functional, compact appearance.

Claims

1. a micromachine comprises casing, rotor, stator, rotating shaft, and rotor and rotating shaft are fixed as one, rotating shaft is installed on the two bearings, two bearings is fixed on the casing, it is characterized in that: the bearing of rotating shaft outlet side is a spherical bearing, and the bearing of axle head is a plane bearing after the rotating shaft.