CN220234295U

CN220234295U - Outer rotor motor stator assembly structure

Info

Publication number: CN220234295U
Application number: CN202321848798.6U
Authority: CN
Inventors: 黄国伟; 陈光昌
Original assignee: Jiangmen Shengshite Motor Manufacturing Co ltd
Current assignee: Jiangmen Shengshite Motor Manufacturing Co ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2023-12-22
Anticipated expiration: 2033-07-14

Abstract

The utility model discloses an outer rotor motor stator assembly structure, which relates to the technical field of motors and comprises a shaft body and a stator iron core arranged with the shaft body, wherein a clamp spring groove is formed in the side wall of the shaft body, one end of the side wall of the shaft body is fixedly connected with a mechanical stop ring, the shaft body and the stator iron core mounting groove hole are in clearance fit, and the stator iron core is fixedly connected at the matching position of the side wall of the shaft body in a welding mode; according to the technical scheme provided by the utility model, the size of the matching position is consistent with that of the shaft body, so that the stator core and the shaft body are matched compactly and can be penetrated in place quickly and simply, the simplification of the parts of the stator assembly structure of the outer rotor motor is further ensured, the installation is quicker, and meanwhile, the process can save the labor cost, the material cost and the manufacturing process cost; finally, the process can solve the problem of 80% of noise and solve the problem from the source.

Description

Outer rotor motor stator assembly structure

Technical Field

The utility model relates to the technical field of motors, in particular to an outer rotor motor stator assembly structure.

Background

In the traditional external rotor brushless direct current motor technology, the connection mode between the shaft and the iron core is to punch a plurality of ribs on the shaft or extrude knurling of a whole circle, and then press the knurling into the middle hole of the iron core in an interference mode, as shown in fig. 4, the disadvantage of the scheme technology is as follows:

1. under this condition, the annular knurl can appear that the iron fillings drops at income axle in-process, need add the dispatch personnel hand and scrape the iron fillings and handle, and wherein little part can hide in the gap or other reasons fail clean up to hide inside the motor, and the stator constantly switches under the controller at motor during operation alternating magnetic field, and the irregular iron fillings drops and can become the noise, seriously influences its quality stability.

2. The fixation between the shaft and the iron core also needs to be additionally provided with an elastic check ring to do mechanical limit, so that the axial falling off caused by vibration or external force factors during the daily operation of the motor is prevented, and the axial falling off is shown in fig. 4.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing an outer rotor motor stator assembly structure which is used for solving the problems in the background art.

In view of the above, the utility model provides an outer rotor motor stator assembly structure, which comprises a shaft body and a stator core mounted with the shaft body, wherein a clamp spring groove is formed in the side wall of the shaft body, one end of the side wall of the shaft body is fixedly connected with a mechanical stop ring, the shaft body and the stator core mounting groove hole are in clearance fit, and the stator core is fixedly connected to the matching position of the side wall of the shaft body in a welding mode.

Optionally, an end face of the clamp spring groove, which is close to the mechanical stop ring, is set to be an acute angle, and a fixed section of the mechanical stop ring is set to be an acute angle.

Optionally, one end face of the stator core is supported on one end face of the mechanical stop ring, and the other end face of the stator core is flush with the clamp spring groove.

From the above technical solutions, the embodiment of the present utility model has the following advantages:

according to the stator assembly structure of the outer rotor motor, after the shaft body is penetrated in place, the laser spot welder is used for laser welding the stator core and the shaft body to replace the original interference fit, and the size of the fit position is consistent with that of the shaft body, so that the stator core and the shaft body are compactly matched and can be penetrated in place quickly and simply, the parts of the stator assembly structure of the outer rotor motor are simplified, the installation is quicker, and meanwhile, the labor cost, the material cost and the manufacturing process cost of each station can be saved; finally, the process can solve the problem of 80% of noise and solve the problem from the source.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

Drawings

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is a front view of the shaft of the present utility model;

FIG. 3 is a schematic diagram of the structure of the present utility model;

fig. 4 is a schematic diagram of a prior art structure.

Reference numerals illustrate: 1. a shaft body; 11. a clamp spring groove; 12. a mechanical stop ring; 13. a mating position; 2. and a stator core.

Detailed Description

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

An outer rotor motor stator assembly structure according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

Examples

In order to facilitate understanding, referring to fig. 1 to 3, an embodiment of an outer rotor motor stator assembly structure provided by the utility model comprises a shaft body 1 and a stator core 2 mounted with the shaft body, wherein a clamp spring groove 11 is formed in the side wall of the shaft body 1, one end of the side wall of the shaft body 1 is fixedly connected with a mechanical stop ring 12, the shaft body 1 and a stator core 2 mounting slot hole are in clearance fit, and the stator core 2 is fixedly connected at a matching position 13 of the side wall of the shaft body 1 in a welding mode.

It should be noted that, the jump ring groove 11 in the prior art is kept, make this position of axis body 1 and stator core 2 be clearance fit, when axis body 1 wear in place the back again use laser spot welder to carry out laser welding stator core 2 and axis body 1 in order to replace original interference fit, and through adopting cooperation position 13, the size of this cooperation position 13 is unanimous with axis body 1, make stator core 2 and axis body 1 cooperation compact and can wear in place fast, simply, utilize mechanical stop ring 12 to guarantee that stator core 2 passes fast after cooperation position 13 position, can stop the position at mechanical stop ring 12 rank face.

In some embodiments, the snap spring groove 11 is disposed at an acute angle near an end face of the mechanical stop ring 12, and the constant section of the mechanical stop ring 12 is disposed at an acute angle.

It should be noted that, by setting one end face of the snap spring groove 11 and the mechanical stop ring 12 to be an acute angle, laser spot welding is conveniently adopted for fixation.

In some embodiments, one end face of the stator core 2 is supported on one end face of the mechanical stop ring 12, and the other end face of the stator core 2 is flush with the jump ring groove 11.

It should be noted that, the installation position of the stator core 2 and the shaft body 1 is guaranteed to be reasonable, and the use is convenient.

Working principle: when the novel mechanical stop ring is used, the position of the shaft body 1 is in clearance fit with the stator core 2, after the shaft body 1 is penetrated in place, the laser spot welder is used for laser welding the stator core 2 and the shaft body 1 to replace the original interference fit, and the size of the fit position 13 is consistent with that of the shaft body 1 by adopting the fit position 13, so that the stator core 2 and the shaft body 1 are compactly matched and can be quickly and simply penetrated in place, and after the mechanical stop ring 12 is used for ensuring that the stator core 2 quickly penetrates through the position of the fit position 13, the position can be stopped on the step surface of the mechanical stop ring 12.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An external rotor motor stator assembly structure, its characterized in that: including axis body (1) and stator core (2) of installing with it, jump ring groove (11) have been seted up to the lateral wall of axis body (1), the one end fixedly connected with machinery of axis body (1) lateral wall ends position ring (12), axis body (1) adopts clearance fit with stator core (2) installation slotted hole, stator core (2) adopt welded mode fixed connection in the cooperation position (13) position department of axis body (1) lateral wall.

2. The outer rotor motor stator assembly structure of claim 1, wherein: the clamping spring groove (11) is arranged at an acute angle near one end face of the mechanical stop ring (12), and the fixed section of the mechanical stop ring (12) is arranged at an acute angle.

3. The outer rotor motor stator assembly structure of claim 1, wherein: one end face of the stator core (2) is supported on one end face of the mechanical stop ring (12), and the other end face of the stator core (2) is flush with the clamp spring groove (11).