CN215911962U

CN215911962U - Assembly structure of outer rotor shell and magnetic ring of motor

Info

Publication number: CN215911962U
Application number: CN202122018150.3U
Authority: CN
Inventors: 周念祖; 王守生; 沈荣栩
Original assignee: Guangdong Huilipu Intelligent Technology Co ltd
Current assignee: Guangdong Huilipu Intelligent Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-25
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses an assembling structure of a motor outer rotor shell and a magnetic ring, which comprises a shell and a magnetic ring body, wherein a circular groove is formed in the shell, the magnetic ring body is arranged in the circular groove, more than one baffle extending upwards is arranged on the bottom wall of the circular groove, a positioning area is formed between the baffle and the inner wall of the circular groove, a lug capable of being inserted into the positioning area is arranged at the lower end of the magnetic ring body, the baffle is arranged on the shell, the positioning area is formed between the baffle and the inner wall of the circular groove, the lug capable of being inserted into the positioning area is arranged at the lower end of the magnetic ring body, and through the matching between the lug and the baffle, when the shell corresponding to the magnetic ring body rotates, the lug and the baffle can be tightly abutted together, so that the bonding strength between the shell and the magnetic ring body is increased, and the working safety of a motor is improved.

Description

Assembly structure of outer rotor shell and magnetic ring of motor

Technical Field

The utility model relates to the technical field of motors, in particular to an assembling structure of a motor outer rotor shell and a magnetic ring.

Background

In recent years, with the rapid development of power electronic technology, microelectronic technology and novel motor control theory, the direct current brushless motor can be rapidly popularized and applied. The mounting mode of the casing and the magnetic ring of the existing outer rotor of the direct current brushless motor is simple, the magnetic ring is mounted in the casing only in a mode of simple interference fit and glue matching, the casing is driven to rotate by the magnetic ring, but the bonding strength of the magnetic ring and the casing is reduced due to the fact that the plastic material has the characteristic of automatic shrinkage for a long time, and the magnetic ring and the casing are loosened, so that the safety risk exists in the work of the motor.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide an assembly structure of an outer rotor casing and a magnetic ring of a motor, which solves one or more problems of the related art.

In order to achieve the purpose, the utility model adopts the following scheme: the utility model provides an assembly structure of motor external rotor casing and magnetic ring, includes casing and magnetic ring body, be equipped with the circular recess on the casing, the magnetic ring body sets up in the circular recess the diapire of circular recess is equipped with the baffle of more than one upwards extension, form a locating area between baffle and the circular recess inner wall the magnetic ring body lower extreme is equipped with the lug that can insert and locate in the locating area.

Furthermore, one side of the lug, which is attached to the baffle, is of a planar structure.

Further, the baffle and the shell are integrally formed through stamping and bending.

Further, the baffle is bent and formed towards the central axis back to the shell.

Further, the lower end of one side, close to the baffle, of the lug is provided with a round corner structure.

Further, the number of the baffle plates and the lugs is four.

In summary, the beneficial effects of the utility model are as follows: through being provided with the baffle on the casing, form the location district between baffle and the round recess inner wall, be equipped with the lug that can insert in the location district at magnetic ring body lower extreme, through the cooperation between lug and the baffle, when the corresponding casing of magnetic ring body is rotatory, lug and baffle can be tight the counterbalance together, increase the intensity of combining between casing and the magnetic ring body, improve the security of motor work.

Drawings

Fig. 1 is a schematic structural view of the magnetic ring body of the present invention when it is mated with a housing.

Fig. 2 is a schematic structural view of the magnetic ring body and the shell of the present invention when they are disassembled.

Fig. 3 is a schematic cross-sectional view of the magnet ring body of the present invention in cooperation with the housing.

FIG. 4 is a schematic view of the bump in the positioning region according to the present invention.

FIG. 5 is a schematic view of the cam of the present invention rotating relative to the stop.

Fig. 6 is a schematic cross-sectional view of the motor of the present invention after installation.

Description of reference numerals: 1. a housing; 2. a magnetic ring body; 3. a circular groove; 4. a baffle plate; 5. A positioning area; 6. a bump; 41. a fillet structure; 10. an interference zone.

Detailed Description

The following detailed description provides many different embodiments or examples for implementing the utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers, such as repeated numbers and/or letters, may be used in various embodiments. These iterations are for simplicity and clarity of describing the present invention and are not intended to represent a particular relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms, such as "below" … "," below "," inside-out "," above "," upper "and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature during use or operation of the device, and may include different orientations of the device during use or operation of the device as illustrated in the figures. The devices may be rotated 90 degrees or other orientations from different orientations and the spatially relative descriptors used therein should be interpreted as such and are not to be construed as limiting the utility model, and the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance or to implicitly indicate 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.

The utility model is further described in the following figures and detailed description: as shown in fig. 1 to 6, the assembly structure of the outer rotor casing and the magnetic ring of the motor comprises a casing 1 and a magnetic ring body 2, wherein a circular groove 3 is arranged on the casing 1, the magnetic ring body 2 is arranged in the circular groove 3, more than one baffle 4 extending upwards is arranged on the bottom wall of the circular groove 3, a positioning area 5 is formed between the baffle 4 and the inner wall of the circular groove 3, a protrusion 6 capable of being inserted into the positioning area 5 is arranged at the lower end of the magnetic ring body 2, the number of the baffle 4 and the protrusion 6 is preferably four, the baffle 4 is arranged on the casing 1, the positioning area 5 is formed between the baffle 4 and the inner wall of the circular groove 3, the protrusion 6 capable of being inserted into the positioning area 5 is arranged at the lower end of the magnetic ring body 2, and by the matching between the protrusion 6 and the baffle 4, when the magnetic ring body 2 rotates corresponding to the casing 1, the protrusion 6 and the baffle 4 are tightly abutted against each other, the strength of the combination between the shell 1 and the magnetic ring body 2 is increased, and the working safety of the motor is improved.

Referring to fig. 4-5, one side of the protruding block 6, which is attached to the baffle 4, is a planar structure, after the protruding block 6 is fitted to the baffle 4, the magnetic ring body 2 and the housing 1 are coaxially disposed, when the magnetic ring body 2 and the housing 1 are loosened, the protruding block 6 is driven by the magnetic ring body 2 to rotate, at this time, because one side of the protruding block 6, which is attached to the baffle 4, is a planar structure, the protruding block 6 can generate an interference region 10 (as shown in fig. 5) with the baffle 4 when rotating, so that the protruding block 6 and the baffle 4 can be tightly clamped, and the housing 1 and the magnetic ring body 2 are also tightly combined, thereby ensuring the safety of the motor during operation.

In order to improve the strength of the baffle 4, the baffle 4 and the shell 1 are bent into a whole through stamping, and the baffle 4 and the shell 1 are bent into a whole through stamping, so that the strength of the baffle 4 is effectively improved, and the motor can normally work.

In order to facilitate the installation of the magnetic ring body 2, the baffle 4 is bent and molded towards the central axis back to the shell 1, and the lower end of the bump 6 close to one side of the baffle 4 is provided with a fillet structure 41, because when the baffle 4 is bent upwards, the baffle 4 and the bottom wall of the shell 1 can generate a fillet, the fillet structure 41 capable of avoiding the baffle is arranged on the bump 6, so that the bump 6 can be tightly attached to the side opposite to the baffle 4.

While there have been shown and described the fundamental principles and principal features of the utility model and advantages thereof with reference to the drawings, it will be understood by those skilled in the art that the utility model is not limited to the embodiments described above, which are given by way of illustration of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an assembled structure of motor external rotor casing and magnetic ring, is including casing (1) and magnetic ring body (2), be equipped with circle recess (3) on casing (1), magnetic ring body (2) set up in circle recess (3), its characterized in that: the bottom wall of the circular groove (3) is provided with more than one baffle (4) extending upwards, a positioning area (5) is formed between the baffle (4) and the inner wall of the circular groove (3), and the lower end of the magnetic ring body (2) is provided with a lug (6) capable of being inserted into the positioning area (5).

2. The structure of claim 1, wherein the structure comprises: one side of the lug (6) which is attached to the baffle (4) is of a plane structure.

3. The structure of claim 1, wherein the structure comprises: the baffle (4) and the shell (1) are integrally formed through stamping and bending.

4. The structure of claim 3, wherein the structure comprises: the baffle (4) is bent and formed towards the central axis back to the shell (1).

5. The structure of claim 4, wherein the structure comprises: the lower end of one side of the lug (6) close to the baffle (4) is provided with a round corner structure (41).

6. The structure of any one of claims 1 to 5, wherein the structure comprises: the number of the baffle plates (4) and the number of the convex blocks (6) are four.