CN220692916U

CN220692916U - High-performance motor structure

Info

Publication number: CN220692916U
Application number: CN202322398709.9U
Authority: CN
Inventors: 张水中; 许梦瑶
Original assignee: Dingfang Motor Technology Changzhou Co ltd
Current assignee: Dingfang Motor Technology Changzhou Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-03-29
Anticipated expiration: 2033-09-05

Abstract

The utility model relates to the technical field of motors, in particular to a high-performance motor structure, which comprises a stator assembly, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively and correspondingly connected to the left end and the right end of the stator assembly, a rotor assembly is assembled in the stator assembly, and a rotating shaft is assembled in the rotor assembly.

Description

High-performance motor structure

Technical Field

The utility model relates to the technical field of motors, in particular to a high-performance motor structure.

Background

The prior art small motor adopts that front and rear aluminum end covers are embedded into one part of the inner hole of the stator to be used for assembly and positioning. There are the following drawbacks: 1. the linking mode of the stator and the end cover leads to the reduction of the effective utilization rate of the stator (more than 10 percent), 2, and the larger concentricity error of the end cover and the inner hole of the stator leads to the large gap between the stator and the rotor of the motor, as shown in figures 2 and 4.

In summary, the present utility model solves the existing problems by designing a high performance motor structure.

Disclosure of Invention

The present utility model is directed to a high performance motor structure to solve the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a high performance motor structure, includes stator module, front end housing and rear end cap correspond respectively and connect both ends about stator module, stator module's inside is equipped with rotor subassembly, rotor subassembly's inside is equipped with the pivot, the one end of pivot runs through the front end housing to extend to the opposite side of front end housing, wherein the inside of front end housing is equipped with the upper bearing with being located the outer wall of pivot, adopt the close-fitting mode assembly between front end housing and the upper bearing, the other end of pivot runs through the rear end housing to extend to the opposite side of rear end housing, wherein the inside of rear end housing is equipped with the lower bearing with being located the outer wall of pivot, adopt the close-fitting mode assembly between rear end housing and the lower bearing.

As a preferable scheme of the utility model, the outer wall of the rotor assembly and the inner wall of the stator assembly are in clearance fit, wherein the clearance fit distance is less than or equal to 0.08mm.

As a preferable scheme of the utility model, the upper bearing and the lower bearing are respectively in excessive fit with the rotating shaft.

As a preferable scheme of the utility model, the outer wall of the rotating shaft is in clearance fit with the rabbets of the front end cover and the rear end cover respectively, and the front end cover and the rear end cover are connected with the stator assembly respectively in a welding or riveting mode.

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

according to the utility model, the stator and the end cover are connected in a welding or riveting mode, the concentricity of the stator assembly is better than that of the screw installation connection, the bearing and the end cover are in close fit, so that the concentricity of the stator and the rotor is ensured, meanwhile, the bearing chamber and the inner hole of the stator are designed to be the same size, after being fixed in a welding or riveting mode, an overlong spigot is not needed to be embedded and fixed, the rotor lamination can be heightened, the motor performance is improved, the stator and the end cover are conveniently positioned by a core rod, the concentricity is ensured, the assembly error is removed, the end cover is not plugged into the inner hole of the stator, the length of the rotor is increased, and the length utilization rate of the stator is improved.

Drawings

FIG. 1 is a schematic diagram of a cross-sectional structure of an electric motor according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a prior art motor;

FIG. 3 is a schematic diagram of a cross-sectional mating structure of the motor of the present utility model;

fig. 4 is a schematic diagram of a cross-sectional structure of a conventional motor.

In the figure: 1. a stator assembly; 2. a front end cover; 3. a rear end cover; 4. a rotor assembly; 5. a rotating shaft; 6. an upper bearing; 7. and a lower bearing.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

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 utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, the present utility model provides a technical solution:

the utility model provides a high performance motor structure, including stator module 1, front end housing 2 and rear end housing 3 correspond respectively and connect both ends about stator module 1, the inside of stator module 1 is equipped with rotor subassembly 4, the inside of rotor subassembly 4 is equipped with pivot 5, the one end of pivot 5 runs through front end housing 2 to extend to the opposite side of front end housing 2, wherein the inside of front end housing 2 is equipped with upper bearing 6 with being located the outer wall of pivot 5, adopt the close-fitting mode assembly between front end housing 2 and the upper bearing 6, the other end of pivot 5 runs through rear end housing 3 to extend to the opposite side of rear end housing 3, wherein the inside of rear end housing 3 is equipped with lower bearing 7 with being located the outer wall of pivot 5, adopt close-fitting mode assembly between rear end housing 3 and the lower bearing 7.

As a preferred embodiment of the present utility model, the outer wall of the rotor assembly 4 is fitted with the inner wall of the stator assembly 1 in a clearance fit manner, wherein the distance of the clearance fit is less than or equal to 0.08mm.

As a preferable scheme of the utility model, the upper bearing 6 and the lower bearing 7 are respectively in excessive matching with the rotating shaft 5.

As a preferred embodiment of the utility model, the outer wall of the rotating shaft 5 is in clearance fit with the spigot of the front end cover 2 and the spigot of the rear end cover 3 respectively, so that the rotation of the rotating shaft 5 is effectively ensured, and the connection modes of the front end cover 2 and the rear end cover 3 and the stator assembly 1 are respectively welded or riveted.

The motor matching mode of the scheme is compared with that of the existing scheme through design, and the motor matching mode is shown in the following table, wherein the front end cover 2 and the rear end cover 3 are end covers, and the upper bearing 6 and the lower bearing 7 are bearings.

In general, this scheme adopts welding or riveting mode to be connected through designing stator and end cover, stator module concentricity is better than screw erection joint, and bearing and end cover cooperation mode adopts close-fitting, in order to guarantee stator-rotor concentricity, simultaneously bearing room and stator hole size design become same size, use welding or riveting mode fixed back, need not overlength tang embedding fixedly, the rotor lamination can be increased, the motor performance is improved, make things convenient for stator and end cover to adopt the plug to fix a position, guarantee the concentricity, remove assembly error, and the end cover is not plugged into the stator hole, increase rotor length, thereby improve stator length utilization ratio.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high performance motor structure, includes stator module (1), front end housing (2) and rear end housing (3), its characterized in that: front end housing (2) and rear end housing (3) correspond respectively and connect the left and right sides both ends at stator module (1), the inside of stator module (1) is equipped with rotor subassembly (4), the inside of rotor subassembly (4) is equipped with pivot (5), the one end of pivot (5) runs through front end housing (2) to extend to the opposite side of front end housing (2), wherein the inside of front end housing (2) is equipped with upper bearing (6) with being located the outer wall of pivot (5), adopt the close-fitting mode assembly between front end housing (2) and upper bearing (6), the other end of pivot (5) runs through rear end housing (3) to extend to the opposite side of rear end housing (3), wherein the inside of rear end housing (3) and be located the outer wall of pivot (5) are equipped with lower bearing (7), adopt the close-fitting mode assembly between rear end housing (3) and lower bearing (7).

2. A high performance motor structure as claimed in claim 1, wherein: the outer wall of the rotor assembly (4) is in clearance fit with the inner wall of the stator assembly (1), wherein the clearance fit distance is less than or equal to 0.08mm.

3. A high performance motor structure as claimed in claim 1, wherein: the upper bearing (6) and the lower bearing (7) are respectively in excessive fit with the rotating shaft (5).

4. A high performance motor structure as claimed in claim 1, wherein: the outer wall of the rotating shaft (5) is in clearance fit with the rabbets of the front end cover (2) and the rear end cover (3), and the connection mode of the front end cover (2) and the rear end cover (3) with the stator assembly (1) is welding or riveting.