CN220475508U

CN220475508U - Rotor system and motor

Info

Publication number: CN220475508U
Application number: CN202321572039.1U
Authority: CN
Inventors: 冯光亮
Original assignee: Zhongshan Jintian Electronic Technology Co ltd
Current assignee: Zhongshan Jintian Electronic Technology Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2024-02-09
Anticipated expiration: 2033-06-19

Abstract

The application discloses rotor system and motor, rotor system includes the axle core, it is equipped with first bearing, spring, second bearing and magnetic ring to overlap in proper order along its axial on the axle core, the second bearing is close to the one end of magnetic ring is first end, the magnetic ring has and is close to the second end of second bearing and keep away from the third end of second bearing, the distance between first end tip and the third end tip is L1, the distance of first end tip and second end tip is L2, and L1/L2 is less than 0.2. According to the motor, the proportion between the two ends of the magnetic ring and the first end part of the second bearing is limited, so that the second bearing can effectively support the shaft core when the magnetic ring drives the shaft core to rotate, the balance stability of the shaft core during rotation is improved, and the stability of the motor is improved.

Description

Rotor system and motor

Technical Field

The present application relates to the field of structural and mechanical load coupling, and in particular to a rotor system and motor.

Background

Existing inner rotor motors typically include a housing defining a receiving space, a stator, and a rotor system typically including a shaft core extending through the housing and the stator, a magnetic ring disposed about the shaft core and received within the stator, two bearings disposed about the shaft, and a spring disposed between the two bearings.

Two bearings are used to support the shaft core to reduce the friction resistance when the shaft core rotates, and the stability of the balance of the rotation of the rotor system, which affects the stability of the whole motor, is greatly affected with the increase of the rotation speed, so that further research on the stability is necessary.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a rotor system which is beneficial to improving the rotation stability of the rotor system and a motor, and adopts the following technical scheme:

a rotor system is characterized by comprising a shaft core, wherein a first bearing, a spring, a second bearing and a magnetic ring are sequentially sleeved on the shaft core along the axial direction of the shaft core,

the second bearing is close to one end of the magnetic ring and is provided with a second end close to the second bearing and a third end far away from the second bearing, the distance between the first end part and the third end part is L1, the distance between the first end part and the second end part is L2, and L2/L1 is smaller than 0.2.

The application also proposes a motor comprising a housing, a stator arranged in the housing and the rotor system described above.

The utility model has the beneficial effects that: according to the motor, the proportion between the two ends of the magnetic ring and the first end part of the second bearing is limited, so that the second bearing can effectively support the shaft core when the magnetic ring drives the shaft core to rotate, the balance stability of the shaft core during rotation is improved, and the stability of the motor is improved.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a motor according to the present application;

FIG. 2 is a schematic structural view of a rotor system according to the present disclosure;

fig. 3 is a position profile of a magnetic ring and a second bearing in the rotor system described herein.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless clearly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be connected directly or indirectly through an intermediary; the connecting device can be fixedly connected, detachably connected and integrally formed; may be a mechanical connection; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1-3, an embodiment of the present application is presented, in which the motor includes a housing 100, a stator 200 disposed within the housing 100, and a rotor system 300, the rotor system 300 including a shaft core 301 extending through the housing 100 and the stator 200, a magnetic ring 302 disposed around the shaft core 301 and received within the stator 200, a first bearing 303 disposed around the shaft core 301, a second bearing 304, and a spring 305 disposed between the first bearing 303 and the second bearing 304.

The end of the second bearing 304 near the magnetic ring 302 is a first end, the magnetic ring 302 has a second end near the second bearing 304 and a third end far from the second bearing 304, the distance between the first end and the third end is L1, the distance between the first end and the second end is L2, and L2/L1 is less than 0.2.

According to the motor, the proportion between the two ends of the magnetic ring 302 and the first end of the second bearing 304 is limited, so that the second bearing 304 can effectively support the shaft core 302 when the magnetic ring 302 drives the shaft core 301 to rotate, and the balance stability of the shaft core 301 during rotation is improved, so that the stability of the motor is improved.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. A rotor system is characterized by comprising a shaft core (301), wherein a first bearing (303), a spring (305), a second bearing (304) and a magnetic ring (302) are sequentially sleeved on the shaft core (301) along the axial direction of the shaft core,

one end of the second bearing (304) close to the magnetic ring (302) is a first end, the magnetic ring (302) is provided with a second end close to the second bearing (304) and a third end far away from the second bearing (304), the distance between the first end and the third end is L1, the distance between the first end and the second end is L2, and L2/L1 is smaller than 0.2.

2. A motor comprising a housing (100) and a stator (200) disposed within the housing and the rotor system of claim 1.