SHAFT-EMBRACING PERMANENT MAGNET INTER-SHAFT GLUED ROTOR STRUCTURE OF HIGH-SPEED MOTOR

Abstract

The present invention relates to a shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor; the structure is a shaft-embracing permanent magnet integrated structure; the rotor structure comprises a permanent magnet (2), an output shaft (1) which is connected with one end of the permanent magnet (2) and embraces one part of the permanent magnet (2), and a rear shaft (4) which is respectively connected with the other end of the permanent magnet (2) and the output shaft (1), used for embracing the other part of the permanent magnet (2), and connected with the output shaft (1) to form a sealing mechanism of the permanent magnet (2). Compared with the prior art, the present invention has advantages of good electro-magnetic performance, high reliability, high productivity and good concentricity.

Claims

1. A shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor, characterized in that the structure is a shaft-embracing permanent magnet integrated structure; the rotor structure comprising: a permanent magnet (2); an output shaft (1), connected with one end of the permanent magnet (2) and embracing one part of the permanent magnet (2); and, a rear shaft (4), respectively connected with the other end of the permanent magnet (2) and the output shaft (1), used for embracing the other part of the permanent magnet (2), and connected with the output shaft (1) to form a sealing mechanism of the permanent magnet (2).

2. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, connected with the permanent magnet (2), of the output shaft (1) is formed with a first inner hole matched with the permanent magnet (2).

3. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, connected with the permanent magnet (2), of the rear shaft (4) is formed with a second inner hole matched with the permanent magnet (2).

4. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, the joint (3) between the output shaft (1) and the rear shaft (4) is glued to integrate the output shaft and the rear shaft as a whole.

5. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, the output shaft (1) and the rear shaft (4) are both convex structures.

6. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, the shafts and the inner holes of the shafts are processed at the same station.

7. The shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor according to claim 1, wherein, the rotor structure takes the excircle of the permanent magnet (4) as a positioning reference.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0029] FIG. 1 is a schematic view of an existing rotor structure matched with a thin and long hole.

[0030] FIG. 2 is a schematic view of an existing rotor structure held by rectangular key grooves at two ends.

[0031] FIG. 3 is a schematic view of an existing rotor structure protected with a steel jacket.

[0032] FIG. 4 is a structural view of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0033] The present invention is described in detail with reference to the attached drawings and embodiment.

Embodiment

[0034] As shown in FIG. 4, a shaft-embracing permanent magnet inter-shaft glued stator structure of a high-speed motor is provided. The structure is a shaft-embracing permanent magnet integrated structure. The rotor structure 5 includes: a permanent magnet 2, an output shaft 1 which is connected with one end of the permanent magnet 2 and embraces one part of the permanent magnet 2, and a rear shaft 4 which is respectively connected with the other end of the permanent magnet 2 and the output shaft 1, used for embracing the other part of the permanent magnet 2, and connected with the output shaft 1 to form a sealing mechanism of the permanent magnet 2.

[0035] An end, connected with the permanent magnet 2, of the output shaft 1 is formed with a first inner hole matched with the permanent magnet 2. An end, connected with the permanent magnet 2, of the rear shaft 4 is formed with a second inner hole matched with the permanent magnet 2.

[0036] The joint 3 between the output shaft 1 and the rear shaft 4 is glued to integrate the output shaft and the rear shaft as a whole. The output shaft 1 and the rear shaft 4 are both convex structures. The shafts and the holes inside the shafts are processed at the same station. The rotor structure takes the excircle of the permanent magnet 4 as a positioning reference.

[0037] Such rotor structure splits the steel jacket into two halves; inner holes matched with the permanent magnet 2 are respectively processed and formed on the rear shaft 4 and the output shaft 1; after being assembled with the permanent magnet 2, the rear shaft 1 and the output shaft 4 are glued to form the rotor.