CN216751342U

CN216751342U - Motor rotor structure

Info

Publication number: CN216751342U
Application number: CN202220314358.1U
Authority: CN
Inventors: 赖绍坚
Original assignee: Emaux Zhongshan Swimming Pool Equipment Co ltd
Current assignee: Emaux Zhongshan Swimming Pool Equipment Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-06-14
Anticipated expiration: 2032-02-16

Abstract

A motor rotor structure comprises a rotor iron core, a plurality of arc-shaped magnetic sheets arranged on the outer wall of the rotor iron core, baffle covers arranged at two ends of the rotor iron core and a motor shaft; the blocking cover is fixedly connected with the motor shaft or the rotor iron core; the outer wall of the rotor iron core is provided with clamping grooves at intervals; the magnetic sheet is embedded into the clamping grooves of the two adjacent bayonets in opposite directions. The clamping grooves are formed in the outer wall of the rotor iron core at intervals, and each magnetic sheet is embedded into the clamping grooves with the two adjacent bayonets facing each other to prevent the magnetic sheets from being loosened radially when the magnetic sheets rotate at a high speed.

Description

Motor rotor structure

Technical Field

The utility model relates to a motor structure, in particular to a rotor structure of a permanent magnet motor.

Background

Permanent-magnet machine's rotor structure mainly includes iron core, magnetic sheet, front and back copper fender lid, and the most structure of this type of rotor at present is open, and glue is used fixedly in the location of magnetic sheet, then uses the fender lid at both ends face to cover, because the magnetic sheet of pasting leans on glue to paste completely at radial locking force, in case high temperature or glue when inefficacy, the magnetic sheet will be thrown away easily. Recently, someone has improved this kind of rotor structure, like the magnetic shoe fixed knot structure of a permanent-magnet machine rotor of publication No. CN208782588U, it compresses tightly the cover outside the both ends of magnetic sheet through the annular distribution stopper on preceding baffle and the backplate, then is in the same place by the riveting of preceding baffle and pivot, though the magnetic sheet can be avoided being thrown away when the rotor flies to change at a high speed like this, nevertheless because compress tightly the cover at the stopper when the both ends of magnetic sheet are riveted again, produce the impact to the corner of magnetic sheet, and then make the magnetic sheet damaged easily, reduce the yields when producing.

Therefore, the applicant improves the magnetic shoe fixing structure of the permanent magnet motor rotor.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the motor rotor structure which is more reasonable in structure, safer and firmer and higher in yield.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a motor rotor structure comprises a rotor iron core, a plurality of arc-shaped magnetic sheets arranged on the outer wall of the rotor iron core, blocking covers arranged at two ends of the rotor iron core and a motor shaft; the baffle cover is fixedly connected with the motor shaft or the rotor core; the outer wall of the rotor iron core is provided with clamping grooves at intervals; the magnetic sheet is embedded into the clamping grooves of the two adjacent clamping openings in opposite directions.

In the improved scheme of the motor rotor structure, two adjacent clamping grooves which are opposite to each other form an inverted convex flange.

In the improved scheme of the motor rotor structure, after the baffle cover is fixedly connected with the motor shaft, the inner side of the baffle cover is tightly attached to the outer end face of the rotor iron core.

In the improved scheme of the motor rotor structure, a flange is arranged on the baffle cover; the blocking cover is tightly combined with the motor shaft in a mode of pressing and riveting outside the flanging.

In an improved scheme of the motor rotor structure, the blocking cover is a copper sheet blocking cover.

Compared with the prior art, the utility model has the beneficial effects that: the clamping grooves are formed in the outer wall of the rotor iron core at intervals, and each magnetic sheet is embedded into the clamping grooves with the two adjacent bayonets facing each other to prevent the magnetic sheets from being loosened radially when the magnetic sheets rotate at a high speed.

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

[ description of the drawings ]

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an assembly schematic of an embodiment of the present invention;

FIG. 3 is a front view of an embodiment of the present invention;

fig. 4 is a sectional view taken along line a-a of fig. 3.

[ detailed description ] embodiments

The utility model relates to a motor rotor structure, which comprises a rotor iron core 1, a plurality of arc-shaped magnetic sheets 2 arranged on the outer wall of the rotor iron core 1, baffle covers 3 arranged at two ends of the rotor iron core 1 and a motor shaft 4, wherein the arc-shaped magnetic sheets 2 are arranged on the outer wall of the rotor iron core 1; the baffle cover 3 is fixedly connected with the motor shaft 4 or the rotor core 1; the outer wall of the rotor core 1 is provided with clamping grooves 11 at intervals; magnetic sheet 2 imbed into the opposite draw-in groove 11 of two adjacent bayonet sockets in, can see out, the both ends of magnetic sheet 2 are kept off by keeping off lid 3 and take off with restriction magnetic sheet axial pine, both sides limit is in the draw-in groove 11 of card income rotor core 1 in order to prevent that the magnetic sheet from taking off in high-speed rotatory time radial pine, this kind of structure that comes from the lock magnetic sheet through draw-in groove on the iron core, just need not set up the cover claw cover that encloses by the stopper that a plurality of intervals set up on keeping off lid 3 tightly prevents that the magnetic sheet from taking off in high-speed rotatory time radial pine, just also can not be in the cover tightly, the stopper produces the scraping to the corner of magnetic sheet when the riveting, strike and make the damaged condition of magnetic sheet easily, consequently utility model's structure is more reasonable and safer firm, the yields is higher.

Two adjacent clamping grooves 11 which are opposite to each other are abutted together to form an inverted convex flange, so that the strength of the clamping grooves can be higher.

The baffle cover 3 can be riveted and fixed with the rotor core 1 through a plurality of rivets, but the process is complex and the production cost is high; for this reason, this embodiment is a preferred embodiment, in which the blocking cover 3 and the motor shaft 4 are fixedly connected together, and the inner side of the blocking cover abuts against the outer end face of the rotor core 1. In order to facilitate the fixing of the blocking cover 3 and the motor shaft 4, a flanging 31 is arranged on the blocking cover 3; the blocking cover 3 is tightly combined with the motor shaft in a mode of pressing and riveting outside the flanging 31, and compared with a mode of fixing the blocking cover and the rotor iron core together by punching and riveting a plurality of (generally 6 to 8) aluminum rivets, the blocking cover can better protect the iron core, and also can simplify the process and reduce the production cost.

In this embodiment, the blocking cover 3 is a copper sheet blocking cover.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made herein without departing from the spirit and scope of the utility model as defined in the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the remainder of the disclosure, but rather to limit the scope of the disclosure to the full extent set forth in the appended claims.

Claims

1. A motor rotor structure is characterized by comprising a rotor iron core, a plurality of arc-shaped magnetic sheets arranged on the outer wall of the rotor iron core, blocking covers arranged at two ends of the rotor iron core and a motor shaft; the baffle cover is fixedly connected with the motor shaft or the rotor core; the outer wall of the rotor iron core is provided with clamping grooves at intervals; the magnetic sheet is embedded into the clamping grooves of the two adjacent clamping openings in opposite directions.

2. The electric machine rotor structure of claim 1, wherein adjacent two of the opposing pockets form an inverted "male" flange.

3. The structure of an electric motor rotor according to claim 1 or 2, wherein the inner side of the cover abuts against the outer end surface of the rotor core after the cover is fixedly connected to the motor shaft.

4. The electric motor rotor structure of claim 3, wherein a flange is provided on the shield cover; the blocking cover is tightly combined with the motor shaft in a mode of pressing and riveting outside the flanging.

5. The electric machine rotor structure of claim 4, wherein the shield is a copper sheet shield.