CN2582253Y - Mechanism for positioning rotator of motor - Google Patents

Abstract

The utility model relates to a mechanism for positioning a motor rotator. The utility model is mainly characterized in that a fixed part is tightly matched and penetrated on one end of a rotating shaft of a rotor, and thus, the rotor is fixed and can not be disengaged from a stator; a combination part of the fixed part is formed by the circumference of a through hole, and the diameter of the through hole is less than the outer diameter of the rotating shaft; via utilizing a stamping mode, the combination part of the fixed part is tightly matched and fixed on the position of the rotating shaft which is extended through a bearing hole of the stator, and thus, the positioning of the motor rotor is formed.

Description

The locating structure of motor rotor

Technical field

The utility model relates to a kind of locating structure of motor rotor.

Technical background

Please read shown in Figure 1, it is a kind of locating structure of known motor rotor, it mainly is that centre bit by rotor 90 installs a rotation axis 91, this rotation axis 91 can run through the dead eye 93 that is incorporated into stator 92, dead eye 93 positions that this rotation axis 91 protrudes from stator 92 are provided with annular groove 94, and this annular groove 94 waits back-up ring 95 spacing for C shape ring, makes the restriction of this rotor 90 because of back-up ring 95, can not break away from stator 92, also form the location of motor rotor simultaneously.

But, the locating structure of the known motor rotor of above-mentioned kind, the rotation axis 91 of its rotor 90 needs car system annular groove 94, so on making, comparatively bother, especially, when the rotation axis 91 of this rotor 90 only has less external diameter, the work of car system is more difficult, and also comparatively inconvenience of assembling.

Summary of the invention

The purpose of this utility model is the locating structure that a kind of motor rotor will be provided, and makes the rotor of this motor can processed easily manufacturing.

The purpose of this utility model is achieved in that

A kind of locating structure of motor rotor includes:

One rotor is provided with a rotation axis;

One stator is provided with a dead eye, and this dead eye can run through for the rotation axis of rotor;

It is characterized in that also including:

One fixture, this fixture is provided with a through hole, and the periphery of this through hole is provided with the joint portion, and the diameter that this joint portion institute corral becomes is less than the external diameter of rotation axis;

By the compressing mode this fixture is combined closely with the joint portion of its through hole and be fixed on rotation axis through the stator dead eye, forming rotor can not break away from stator.

The periphery of this fixture formation through hole is provided with fixture is more combined closely in several breach of rotation axis.

This breach is according to being formed centrally equal angular laying in the through hole.

Because the utility model mainly is rotation axis one end that is through at rotor by a fixture close-fitting cover, this rotor is fixed can not broken away from stator; The joint portion of this fixture is formed by the peripheral of a through hole, the diameter of this through hole is less than the external diameter of rotation axis, utilize impact style to make the joint portion of fixture become close-fitting to be fixed on the rotation axis position that stretches out in the stator dead eye, form the location of motor rotor, thereby the utlity model has following advantage:

Motor rotor locating structure of the present utility model, the rotation axis of this rotor is to form single diameter, therefore, comparatively convenient on making, can reduce the procedure of processing of car system annular groove, especially for this rotation axis than minor diameter, the difficulty of this annular groove of its car system can be avoided, so the utility model is to have easy to manufacture and process easy advantage.

Description of drawings

Fig. 1 commonly uses the structure exploded perspective view.

The exploded perspective view of Fig. 2 the utility model first embodiment.

Sectional drawing after Fig. 3 the utility model first embodiment rotation axis and the fixture combination.

The exploded perspective view of Fig. 4 the utility model second embodiment.

Sectional drawing after Fig. 5 the utility model second embodiment rotation axis and the fixture combination.

The exploded perspective view of Fig. 6 the utility model the 3rd embodiment.The piece number explanation:

1 rotor, 11 rotation axiss, 2 stators

21 dead eyes, 3 fixtures, 31 through holes

32 breach, 33 joint portions, 4 fixtures

41 through holes, 42 breach, 43 joint portions

5 fixtures, 51 through holes, 52 joint portions

90 rotors, 91 rotation axiss, 92 stators

93 dead eyes, 94 annular grooves, 95 back-up rings

Embodiment

See also appended graphicly, the utility model lifted the following example explanation:

As shown in Figure 2, be the utility model first preferred embodiment, constituted by members such as rotor 1, stator 2 and fixtures 3.

Rotor 1 and stator 2 are to can be known structure, and this rotor 1 is to be provided with a rotation axis 11 by central part, and this rotation axis 11 can run through the dead eye 21 that is incorporated into stator 2, form this dead eye 21 and can support rotor 1 to make position rotating.

Fixture 3 is to be made or to be made by the plastic material shaping by the metal material punching press, this fixture 3 tools one through hole 31, the periphery that forms this through hole 31 is to have several breach 32 and be provided with joint portion 33, these breach 32 preferred version are to become isogonism to lay according to the center of through hole 31, and the diameter that 33 corrals in this joint portion become is the external diameter that is slightly less than this rotation axis 11, makes the through hole 31 of fixture 3 be combined in rotation axis 11 with joint portion 33 close-fittings by impact style.

As shown in Figure 3, be the compound section figure of the utility model first preferred embodiment rotation axis and fixture, this fixture 3 is with forcing the mode of being pressed into to be bonded on the rotation axis 11, make of the combination of this fixture 3 by the 11 one-tenth close-fittings in joint portion 33 and rotation axis of through hole 31, so when this rotor 1 rotated with respect to stator 2, this fixture 3 had the function that prevents rotor 1 disengaging stator 2.

As shown in Figure 4, be the utility model second embodiment, it also is to be provided with a rotation axis 11 by rotor 1, and this rotation axis 11 is the dead eyes 21 that can be applied in stator 2, make rotor 1 be positioned at this and schedule 21 rotations of dead eye of 2, the position that this rotation axis 11 stretches out in stator 2 dead eyes 21 is can be for a fixture 4 combinations, this fixture 4 also has a through hole 41, the periphery that forms this through hole 41 also has several breach 42 and joint portion 43, this breach 42 is to become more adjacent setting, and the diameter that 43 corrals in this joint portion become is the external diameter that is slightly less than rotation axis 11, therefore makes the joint portion 43 of these through hole 41 peripheries and 11 of rotation axiss that preferable combining closely can be arranged.

As shown in Figure 5, it is the utility model second embodiment rotation axis and the sectional drawing that combines of fixture, this fixture 4 also is to utilize to force the mode of being pressed into to be bonded on the rotation axis 11, therefore, this fixture 4 can also form friction tight mode and be fixed on the rotation axis 11, so, and when this rotor 1 rotates with respect to stator 2, this fixture 4 also has the function that prevents rotor 1 disengaging stator 2, and makes 1 one-tenth of rotor be positioned 21 rotations of dead eye of stator 2.

As shown in Figure 6, be the utility model the 3rd embodiment, it also is to be provided with a rotation axis 11 by rotor 1, and this rotation axis 11 is the dead eyes 21 that can be applied in stator 2, make rotor 1 be positioned at 21 rotations of this dead eye, the position that this rotation axis 11 stretches out in stator 2 dead eyes 21 is can be for a fixture 5 combinations, and this fixture 5 also has a through hole 51, the diameter of this through hole 51 also is slightly less than rotation axis 11 external diameters, and the periphery of this through hole 51 is to form joint portion 52.Therefore, this fixture 5 is to force the mode of being pressed into to be bonded on the rotation axis 11, to make this fixture 5 form close-fitting and be fixed on the rotation axis 11, so, when this rotor 1 rotated with respect to stator 2, this fixture 5 can also reach and prevent that rotor 1 breaks away from the function of stator 2.

The utility model can not depart under main spirit and the feature with other different forms enforcement.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.Person very, belong to claim equivalence variation or to revise all be to fall among the scope of the present utility model.

Claims (3)

1, a kind of locating structure of motor rotor includes:

One rotor is established a rotation axis;

One stator is established a dead eye, and this dead eye can run through for the rotation axis of rotor;

It is characterized in that also including:

One fixture, this fixture is provided with a through hole, and the periphery of this through hole is provided with the joint portion, and the diameter that this joint portion institute corral becomes is less than the external diameter of rotation axis;

By the compressing mode this fixture is combined closely with the joint portion of its through hole and be fixed on rotation axis through the stator dead eye.

2,, it is characterized in that periphery that this fixture forms through hole is provided with fixture is more combined closely in several breach of rotation axis according to the locating structure of the described motor rotor of claim 1.

3,, it is characterized in that this breach is according to being formed centrally equal angular laying in the through hole according to the locating structure of the described motor rotor of claim 2.

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