CN210246513U - Motor and rotating shaft thereof - Google Patents

Abstract

The utility model provides a motor and a rotating shaft thereof, wherein the rotating shaft comprises a rotating shaft body and a rotary transformer mounting part; the rotary transformer mounting part is arranged at one end of the rotating shaft body and is coaxial with the rotating shaft body, wherein: the rotating shaft body and the rotary transformer mounting part are split, and a through hole serving as a lightening hole is formed in the shaft part of the rotating shaft body. The utility model has the advantages of good dynamic balance performance, strong structural stability, low processing cost, short time and the like.

Description

Motor and rotating shaft thereof

Technical Field

The utility model relates to a motor spare part, specific theory relates to a motor shaft and applied motor of this pivot.

Background

In the field of new energy vehicles, the weight of a motor has great influence on the overall performance and the endurance time of the new energy vehicles, and in order to enable the motor to meet the weight requirement, a mode of drilling lightening holes at a rotating shaft of the motor is generally adopted at present, so that lightening of the motor is realized to a certain degree.

In the existing motor rotating shaft structure, a common lightening hole punching method is to adopt a long drill bit to punch a lightening hole on one side, but because the depth of the lightening hole is deeper, the coaxiality of the lightening hole and a rotating shaft is poorer, the dynamic unbalance of a rotor is larger in the high-speed rotating process of the motor rotating shaft, and even the situation that the dynamic balance process cannot be completed occurs, so that the overall performance of a motor product is influenced; in addition, the machining time of the deeper lightening hole is longer, the drill bit is easy to wear, and the machining efficiency and the cost are higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, a first object of the present invention is to provide a motor shaft, which has the advantages of low processing cost, short time consumption, strong structural stability, etc.

A second object of the present invention is to provide a motor, which comprises the above-mentioned motor shaft.

Based on the above object, the utility model provides a motor shaft, become the installation department including pivot body and soon, change the installation department soon and set up in the one end of pivot body, and with the pivot body is coaxial, wherein:

the rotating shaft body and the rotary transformer mounting part are split, and a through hole which is used as a lightening hole and penetrates through the whole shaft part of the rotating shaft body is arranged on the shaft part of the rotating shaft body.

Preferably, one end of the rotary transformer mounting part, which is close to the rotating shaft body, is provided with a boss, and the boss is press-fitted in the through hole of the rotating shaft body.

Preferably, the boss is cylindrical, and the radial dimension of the boss is matched with the radial dimension of the through hole.

Preferably, the boss of the rotary-change mounting part is press-fitted in the through hole of the rotating shaft body in a cold pressing mode.

Preferably, the rotating shaft body is integrally forged.

Preferably, the rotating shaft body is processed by adopting a hollow pipe material, and a pipe hole of the hollow pipe material is used as a lightening hole.

In another aspect of the present invention, a motor is provided, which includes the above-mentioned motor shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses set up motor shaft's pivot body and rotary transformer installation department into split type, be the through-hole structure coaxial with the pivot body with the lightening hole processing to make the lightening hole can be through mode processing such as bulk forging or hollow pipe material, the axiality is high, not only can guarantee the dynamic balance performance of pivot, and the processing yield is high, machining efficiency is high, with low costs.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic structural view of a motor rotating shaft in an embodiment of the present invention;

FIG. 2 is a sectional view of a motor shaft according to an embodiment of the present invention;

fig. 3 is a sectional view of the rotating shaft body in the embodiment of the present invention;

fig. 4 is a sectional view of the rotary transformer mounting part in the embodiment of the present invention.

Wherein, 1, the rotating shaft body; 2. a rotary transformer mounting part; 3. a through hole; 4. and (4) a boss.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a motor shaft, includes pivot body 1 and revolves and becomes installation department 2, revolve and become installation department 2 and set up in the one end of pivot body 1, and with pivot body 1 is coaxial, wherein:

as shown in fig. 1 and 2, the shaft body 1 and the rotary transformer mounting part 2 are separated, and as shown in fig. 3, the shaft part of the shaft body 1 is provided with a through hole 3 as a lightening hole penetrating through the whole shaft part of the shaft body.

As a preferred embodiment, as shown in fig. 4, a boss 4 is disposed at one end of the rotary transformer mounting part close to the rotating shaft body, and the boss 4 is press-fitted into the through hole 3 of the rotating shaft body 1.

As a preferred embodiment, the boss 4 is cylindrical and has a radial dimension matching the radial dimension of the through-hole 3.

As a preferred embodiment, the boss 4 of the rotary transformer mounting part 2 is press-fitted into the through hole 3 of the rotating shaft body 1 by cold pressing.

In a preferred embodiment, the shaft body 1 is integrally forged.

As a preferred embodiment, the rotating shaft body 1 is formed by processing a hollow pipe material, and the pipe hole of the hollow pipe material is used as a lightening hole.

In another aspect of this embodiment, an electric motor is provided, which includes the motor shaft as described above.

To sum up, the utility model discloses set up motor shaft's pivot body and rotary transformer installation department into split type, with the lightening hole processing for with the coaxial through-hole structure of pivot body, the utility model discloses a various simpler and easy processing methods can be chooseed for use to the lightening hole, for example the forge as a whole, broach processing perhaps directly processes with modes such as hollow tube material processing, not only does benefit to the process time that reduces processing cost and back process, improves the yield of pivot processing, and simultaneously, the axiality of gained pivot and lightening hole is high, can effectively guarantee the dynamic balance performance of pivot.

Further, it should be noted that:

in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (7)

1. A motor rotating shaft comprises a rotating shaft body (1) and a rotary transformer mounting part (2); the rotary transformer mounting part (2) is arranged at one end of the rotating shaft body (1) and is coaxial with the rotating shaft body (1),

the rotating shaft body (1) and the rotary transformer mounting part (2) are split, and a through hole (3) which is used as a lightening hole and penetrates through the whole shaft part of the rotating shaft body is formed in the shaft part of the rotating shaft body (1).

2. A rotating shaft of an electric motor according to claim 1, wherein a boss (4) is disposed at one end of the rotating installation part (2) close to the rotating shaft body (1), and the boss (4) is press-fitted in the through hole (3) of the rotating shaft body.

3. A machine shaft according to claim 2, characterized in that the boss (4) is cylindrical and has a radial dimension matching the radial dimension of the through-hole (3).

4. A rotating shaft of an electric motor according to claim 3, wherein the boss (4) of the rotary transformer mounting part (2) is press-fitted to the through hole (3) of the rotating shaft body (1) by means of cold pressing.

5. A machine shaft according to claim 3, characterized in that the shaft body (1) is integrally forged.

6. A rotating shaft of an electric motor according to claim 3, wherein the rotating shaft body (1) is formed by processing a hollow tube material, and tube holes of the hollow tube material are used as lightening holes.

7. An electric machine comprising a machine shaft according to any one of claims 1-6.

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