CN210693599U

CN210693599U - Motor and rotor positioning mechanism thereof

Info

Publication number: CN210693599U
Application number: CN201922039407.6U
Authority: CN
Inventors: 薛肇江; 叶欧
Original assignee: Huirun Electrical Co ltd
Current assignee: Huirun Electrical Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-05
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a rotor positioning mechanism, include: a rotating shaft provided with a bearing; the positioning sleeve is sleeved on the rotating shaft and used for preventing the rotor from moving along the axial direction of the rotating shaft; wherein, the position sleeve includes: the first positioning part is used for abutting against one end of the bearing close to the rotor in a contact manner and has elasticity; and the second positioning part is connected with the first positioning part and is used for abutting against one end of the rotor close to the bearing in a contact manner. The utility model also discloses a motor of including above-mentioned rotor positioning mechanism. Above-mentioned rotor positioning mechanism can effectively prevent that the rotor from taking place the not hard up problem of axial in the motor for a long time through setting up the position sleeve, and this position sleeve can realize automatic fine setting through the elasticity of first location portion to the axial float of adaptation rotor, the terminal surface that withstands the rotor through second location portion simultaneously, thereby can solve because the problem of unable effective prevention rotor axle center float after the wave washer is used for a long time.

Description

Motor and rotor positioning mechanism thereof

Technical Field

The utility model relates to a rotor motor assembles technical field, in particular to rotor positioning mechanism. The utility model discloses still relate to a motor including above-mentioned rotor positioning mechanism.

Background

The motor structure mainly comprises a front end cover, a rear end cover, a machine base, a stator, a rotor and the like, wherein a rotating shaft provided with the rotor is connected with the front end cover and the rear end cover through two bearings respectively. In the prior art, in order to prevent the axial float of the rotor during operation, a wave washer is often arranged between the rotor and the rotating shaft, so as to prevent the rotor from generating excessive axial float. However, since the conventional wave washer is generally effective, the effect is deteriorated after a long time use, so that the function of preventing the axial movement of the rotor cannot be effectively realized.

Therefore, how to avoid the problem that the conventional wave washer cannot effectively prevent the axial movement of the rotor after being used for a long time is a technical problem to be solved by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotor positioning mechanism, this rotor positioning mechanism can prevent that the rotor from taking place the axial not hard up in the motor to can solve because the wave washer can't effectively prevent the problem of rotor axle center drunkenness after using for a long time. Another object of the present invention is to provide an electric machine including the above rotor positioning mechanism.

In order to achieve the above object, the utility model provides a rotor positioning mechanism, include:

a rotating shaft provided with a bearing;

the positioning sleeve is sleeved on the rotating shaft and used for preventing the rotor from moving along the axial direction of the rotating shaft;

wherein, the position sleeve includes:

the first positioning part is used for abutting against one end, close to the rotor, of the bearing in a contact manner and has elasticity;

and the second positioning part is connected with the first positioning part and is used for abutting against one end of the rotor close to the bearing in a contact manner.

Optionally, one side of the first positioning portion, which is close to the second positioning portion, is provided with two notches which are arranged oppositely, the middle of the side wall of the first positioning portion is provided with two slots which are arranged oppositely, and the two notches and the two slots are both arranged symmetrically with respect to the axis of the positioning sleeve.

Optionally, the rotor further comprises a rear end cover for fixedly mounting the bearing, and the second positioning portion is provided with an inclined surface for ejecting the two carbon brushes respectively located at the two sides of the rotor when the positioning sleeve is inserted into the rear end cover.

Optionally, the first positioning portion is specifically an annular positioning portion.

Optionally, the second positioning portion is specifically a circular truncated cone-shaped positioning portion, and an end surface diameter of the circular truncated cone-shaped positioning portion close to the first positioning portion is smaller than an end surface diameter of the circular truncated cone-shaped positioning portion far away from the first positioning portion.

Optionally, the positioning sleeve is formed by injection molding once.

The utility model also provides a motor, including above-mentioned arbitrary rotor positioning mechanism.

Compared with the prior art, the utility model discloses to the different requirements of motor assembly, designed a rotor positioning mechanism, specifically speaking, above-mentioned rotor positioning mechanism includes pivot, bearing and position sleeve, and the bearing is located on the pivot, and the position sleeve cover is located on the pivot and is located between bearing and the rotor, and the position sleeve is used for preventing the rotor from shifting along the axial of pivot; the positioning sleeve comprises a first positioning part and a second positioning part, the first positioning part is used for abutting against one end, close to the rotor, of the bearing in a contact manner, and the first positioning part has elasticity; the second positioning part is connected with the first positioning part and used for abutting against one end, close to the bearing, of the rotor. So, above-mentioned rotor positioning mechanism has elastic position sleeve through the setting and can effectively prevent that the rotor from taking place the not hard up problem of axial in the motor for a long time, compare with traditional wave washer, this position sleeve includes first location portion and second location portion, a structure is simple, be convenient for production and processing and loading and unloading, the terminal surface of bearing is withstood through first location portion, automatic fine setting can be realized to the elasticity of first location portion, in order to adapt to the axial float of rotor, the terminal surface of rotor is withstood through second location portion simultaneously, thereby can solve because wave washer can't effectively prevent the problem of rotor axle center float after using for a long time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a rotor positioning mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the rotor positioning mechanism of FIG. 1;

FIG. 3 is a schematic structural view of the positioning sleeve of FIG. 1;

FIG. 4 is a front view of FIG. 3;

fig. 5 is a schematic cross-sectional view of fig. 3.

Wherein:

1-bearing, 2-rear end cover, 3-locating sleeve, 31-first locating part, 32-second locating part, 4-carbon brush, 5-rotor and 6-rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a rotor positioning mechanism, this rotor positioning mechanism can prevent that the rotor from taking place the axial not hard up in the motor to can solve because the wave washer can't effectively prevent the problem of rotor axle center drunkenness after using for a long time. The other core of the utility model is to provide a motor including above-mentioned rotor positioning mechanism.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

Referring to fig. 1 to 5, fig. 1 is a schematic view of an assembly structure of a rotor positioning mechanism according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the rotor positioning mechanism of FIG. 1; FIG. 3 is a schematic structural view of the positioning sleeve of FIG. 1; FIG. 4 is a front view of FIG. 3; fig. 5 is a schematic cross-sectional view of fig. 3.

The embodiment of the utility model provides a rotor positioning mechanism for fix a position rotor 5 to can prevent rotor 5 from taking place the problem of axial not hard up, this rotor positioning mechanism includes pivot 6, bearing 1 and position sleeve 3, bearing 1 locates on pivot 6, bearing 1's effect can support pivot 6 and make pivot 6 rotate and connect on rear end cap 2, position sleeve 3 cover locates on pivot 6 and locates between bearing 1 and rotor 5, position sleeve 3 is used for preventing rotor 5 along the axial float of pivot 6; the positioning sleeve 3 comprises a first positioning portion 31 and a second positioning portion 32, the first positioning portion 31 is used for abutting against one end, close to the rotor 5, of the bearing 1, and the first positioning portion 31 has elasticity; the second positioning portion 32 is connected to the first positioning portion 31, and the second positioning portion 32 is used for contacting and abutting against one end of the rotor 5 close to the bearing 1.

Of course, according to the actual requirement, the above-mentioned position sleeve 3 may be specifically configured as a plastic piece, the position sleeve 3 may be formed by one-time injection molding, the height of the position sleeve 3 may be set to be slightly greater than the distance from the upper end surface of the rotor 5 to the end surface (the end surface protrudes downward slightly from the lower end surface of the bearing 1) on the rear end cover 2 for installing the rotating shaft 6, in order to enable the top mechanism of the position sleeve 3, that is, the first position portion 31 has elasticity, on the basis of having plasticity, the first position portion 31 may be configured as a hollow structure, so that the position portion has elasticity, thereby achieving fine adjustment to adapt to the rotor 5 when the rotor 5 axially moves.

In addition, the first positioning portion 31 may be configured as a hollow cylinder, i.e., a circular ring, and the outer diameter of the first positioning portion 31 may be set to a value between the diameter of the rotating shaft 6 and the outer diameter of the bearing 1, so as to achieve the purpose of abutting against the end surface of the bearing 1; because the top surface of second location portion 32 and the lower terminal surface of first location portion 31 are structure that links to each other as an organic whole, the upper end of second location portion 32 can set up to the diameter and the structure that the external diameter of first location portion 31 equals, simultaneously, the lower terminal surface of second location portion 32 needs the top contact counterbalance with rotor 5, here, can set up the diameter of second location portion 32 bottom to be the same with the diameter of commutator, so, the position sleeve 3 wholly can set up to loudspeaker form, and the minor diameter terminal surface up, the major diameter terminal surface is down, when position sleeve 3 changes, loudspeaker form position sleeve 3 can be opened the carbon brush 4 of rotor 5 both sides to both sides completely, thereby can prevent the condition that carbon brush 4 card goes into the commutator.

So, above-mentioned rotor positioning mechanism has elastic position sleeve 3 through the setting and can prevent effectively that rotor 5 from taking place the not hard up problem of axial in the motor for a long time, compare with traditional wave washer, this position sleeve 3 includes first location portion 31 and second location portion 32, a structure is simple, be convenient for production and processing and loading and unloading, the terminal surface of bearing 1 is withstood through first location portion 31, automatic fine setting can be realized to the elasticity of first location portion 31, in order to adapt to rotor 5's axial float, withhold rotor 5's terminal surface through second location portion 32 simultaneously, thereby can solve because wave washer can't prevent effectively the problem of rotor 5 axle center float after using for a long time.

Further, in order to make the first positioning portion 31 have elasticity, the hollow design of the first positioning portion 31 may specifically include: two oppositely arranged notches are arranged on one side of the first positioning part 31 close to the second positioning part 32, and the notches can be notches with a certain radian; simultaneously, can be equipped with the fluting of two relative settings in the intermediate position of the lateral wall of first positioning portion 31, this fluting specifically can set up to middle opening big, the little structure of both ends opening, can be convenient for like this first positioning portion 31 compression deformation, in order to guarantee that first positioning portion 31 takes place elastic deformation's stability, two breachs and two flutings all can be for the axis symmetry setting of position sleeve 3. Thus, under the action of external force, the above arrangement mode can make the first positioning portion 31 have a space with a small deformation, thereby being beneficial to realizing automatic fine adjustment of the first positioning portion 31 to adapt to the axial movement of the rotor 5.

More specifically, the rotor positioning mechanism further includes a rear end cap 2, wherein the bearing 1 is fixedly mounted in a mounting groove of the rear end cap 2, and as can be seen from the above, in order to facilitate mounting of the second positioning portion 32, the second positioning portion 32 may be formed in a horn shape, that is, a hollow circular truncated cone shape, and the diameter of the end surface of the circular truncated cone shaped second positioning portion close to the first positioning portion 31 is smaller than the diameter of the end surface of the circular truncated cone shaped second positioning portion far away from the first positioning portion 31. In addition, the second positioning portion 32 is provided with an inclined surface, and when the rotor 5 and the positioning sleeve 3 are installed in the rear end cover 2, the two carbon brushes 4 can be pushed open along two sides of the rotor 5 by the inclined surface of the second positioning portion 32.

Generally, when the rotor 5 is installed in the rear end cover assembly, the carbon brushes 4 on both sides need to be pulled out first, and then the rotor 5 is installed, however, after the positioning sleeve 3 is used, the positioning sleeve 3 is installed on the top of the rotor 5, when the rotor 5 and the positioning sleeve 3 are installed in the rear end cover assembly, the inclined plane of the positioning sleeve 3 can directly push the carbon brushes 4 open to be installed, and the top of the installed positioning sleeve 3 pushes the end face of the bearing 1, so that the assembly time can be greatly saved, and the automatic assembly can be very easily realized by using the positioning sleeve 3.

The utility model provides a motor, which comprises a rotor positioning mechanism described in the above embodiment; other parts of the motor can be referred to the prior art and are not expanded herein.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above the utility model provides a motor and rotor positioning mechanism introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A rotor positioning mechanism, comprising:

a rotating shaft (6) provided with a bearing (1);

the positioning sleeve (3) is sleeved on the rotating shaft (6) and used for preventing the rotor (5) from moving along the axial direction of the rotating shaft (6);

wherein the positioning sleeve (3) comprises:

the first positioning part (31) is used for abutting against one end, close to the rotor (5), of the bearing (1), and the first positioning part (31) has elasticity;

and a second positioning part (32) which is connected with the first positioning part (31) and is used for being contacted and abutted with one end of the rotor (5) close to the bearing (1).

2. The rotor positioning mechanism according to claim 1, wherein one side of the first positioning portion (31) close to the second positioning portion (32) is provided with two oppositely arranged notches, the middle of the side wall of the first positioning portion (31) is provided with two oppositely arranged slots, and the two notches and the two slots are symmetrically arranged relative to the axis of the positioning sleeve (3).

3. The rotor positioning mechanism according to claim 2, further comprising a rear end cover (2) for fixedly mounting the bearing (1), wherein the second positioning portion (32) is provided with an inclined surface for pushing out two carbon brushes (4) respectively located at both sides of the rotor (5) when the positioning sleeve (3) is fitted into the rear end cover (2).

4. The rotor positioning mechanism according to claim 3, wherein the first positioning portion (31) is specifically an annular positioning portion.

5. The rotor positioning mechanism according to claim 4, wherein the second positioning portion (32) is embodied as a circular truncated cone-shaped positioning portion, and a diameter of an end surface of the circular truncated cone-shaped positioning portion, which is close to the first positioning portion (31), is smaller than a diameter of an end surface of the circular truncated cone-shaped positioning portion, which is far from the first positioning portion (31).

6. The rotor positioning mechanism according to any one of claims 1 to 5, wherein the positioning sleeve (3) is a one-shot injection molded positioning sleeve.

7. An electrical machine comprising a rotor positioning mechanism as claimed in any one of claims 1 to 6.