CN211183677U

CN211183677U - Motor rotor structure with dynamic balance and magnetic leakage prevention

Info

Publication number: CN211183677U
Application number: CN202020183303.2U
Authority: CN
Inventors: 高志川; 程皓; 蔡赛洪; 孙晓欣
Original assignee: ZHEJIANG FOUNDER MOTOR CO Ltd
Current assignee: ZHEJIANG FOUNDER MOTOR CO Ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-08-04
Anticipated expiration: 2030-02-19

Abstract

The utility model relates to a motor rotor structure of dynamic balance and anti-magnetic leakage, including motor rotor, install motor rotor's motor shaft in motor rotor and embedded in motor rotor's magnet steel, the motor shaft including embedded in motor rotor interior block, end the balanced section of butt in the electron rotor outside and in the section of stretching out of balanced section rear side, interior block, balanced section and stretch out end integrated into one piece guarantee motor rotor at during operation dynamic balance, be equipped with a magnetism spacer piece between motor rotor and the balanced section. The utility model discloses simple structure and simple to operate.

Description

Motor rotor structure with dynamic balance and magnetic leakage prevention

Technical Field

The utility model relates to a new energy automobile electron oil pump motor rotor field specifically is a dynamic balance and anti-magnetic leakage's electric motor rotor structure.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, a rotor of the motor is one of important component sections in the motor, an inner core of a motor rotor on the market is magnetic steel, the magnetic steel has magnetism, and when the rotor is used in a manner of being attached to the core, the magnetism of a rotor core is easy to leak, so that the operation capacity of the rotor core is influenced.

At present, in order to achieve dynamic balance and prevent the magnetic leakage of the motor rotor, the motor rotor balancing block is installed mostly, a shaft shoulder is arranged on a motor shaft in order to facilitate the installation of the motor rotor balancing block, and the motor rotor balancing block is supported by copper to prevent the magnetic leakage of the motor during the operation. But because the length restriction of electric motor rotor balancing piece, the length of grinding shaft shoulder is too short not good processing, and the root section fillet of shaft shoulder left end is difficult for satisfying, leads to the cooperation length of shaft shoulder and electric motor rotor balancing piece to further reduce, and the electric motor rotor balancing piece can become flexible gradually in the use, influences electric motor rotor dynamic balance.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model discloses implement and provide a simple structure and simple to operate's dynamic balance and anti-leakage's electric motor rotor structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a dynamic balance and anti-leakage's electric motor rotor structure, includes electric motor rotor, installs electric motor rotor's motor shaft in electric motor rotor and embedded in electric motor rotor's magnet steel, the motor shaft including embedded in electric motor rotor the interior block, end the balanced section of butt in the electric motor rotor outside and at the section of stretching out of balanced section rear side, interior block, balanced section and stretch out end integrated into one piece guarantee electric motor rotor at during operation dynamic balance, be equipped with a magnetism isolating gasket between electric motor rotor and the balanced section.

Preferably, the balancing section is a radially extending protrusion.

Preferably, the protrusion is stepped.

Preferably, the radial width of the balance section is matched with the radial width of the magnetic isolation gasket.

Preferably, a tool withdrawal groove for installing a motor magnetic isolation gasket is arranged between the balance section and the embedded section of the motor shaft.

Preferably, the motor magnetic isolation gasket is a thin circular gasket.

Preferably, the motor magnetic isolation gasket is a thin round gasket made of non-magnetic stainless steel or copper and rubber materials.

Preferably, the balancing section is cylindrical.

The utility model discloses interior block on the motor shaft, balanced section and stretch out end integrated into one piece guarantee electric motor rotor dynamic balance, processing is simple, is equipped with a magnetism isolating gasket between the balanced section of motor shaft and the electric motor rotor outside, can prevent that the magnetic leakage from appearing in the motor operation, compares with the dynamic balance and the leak protection magnetism structure of previous adoption, the utility model discloses the balanced section of integrated into one piece has overcome grinding shaft shoulder length and has not processed well, and the difficult satisfaction of shaft shoulder root section fillet to make the cooperation length of shaft shoulder and balancing piece reduce, influence electric motor rotor dynamic balance's problem, assemble simpler, the cost is reduced, guarantees electric motor rotor simultaneously and realizes dynamic balance and prevent the magnetic leakage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the motor shaft of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," "retained," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other at the inner sections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, the motor rotor structure for dynamic balance and magnetic leakage prevention comprises a motor rotor 3, a motor shaft 1 installed in the motor rotor 3, and magnetic steel 4 embedded in the motor rotor 3, wherein the motor shaft 1 comprises an inner block embedded in the motor rotor 3, a balance section 6 abutting against the outer side of the motor rotor 3, and an extension section at the rear side of the balance section 6, the inner block, the balance section 6, and the extension end are integrally formed to ensure dynamic balance of the motor rotor during operation, and a magnetic isolation gasket 2 is arranged between the motor rotor 3 and the balance section 6; the degree of difficulty of assembly has been reduced to 6 integrated into one piece in the balanced section of motor shaft 1, and the cost is reduced has prevented motor rotor 3 simultaneously in the course of the work, and balanced section 6 is not hard up, influences motor rotor 3's dynamic balance effect, prevents motor rotor 3 at the 4 magnetic leakages of function in-process magnet steel.

Furthermore, the balance section 6 is cylindrical and is matched with the motor magnetic isolation gasket 2 in a tight fit manner, so that good dynamic balance and magnetic leakage prevention effects are achieved.

Referring to fig. 2, the balance section 6 is a protrusion extending in the radial direction, and is matched with the magnetic isolation gasket 2 to realize dynamic balance and magnetic leakage prevention, the radial width of the balance section 6 is matched with the radial width of the magnetic isolation gasket 2, and the magnetic isolation gasket 2 is thin, so that the influence of outward folding due to extrusion on the magnetic leakage prevention effect is avoided.

Preferably, the projection is stepped to be more stable.

Further, balance section 6 and the embedded section of motor shaft 1 between be equipped with the tool withdrawal groove 5 of installation motor magnetic isolation gasket 2, improve motor shaft 1's processing technology, avoided motor magnetic isolation gasket 2 to take place to interfere because of the processing fillet that 6 root segments of boss left simultaneously, conveniently adjust magnetic isolation gasket, easy dismounting improves magnetic isolation gasket 2 stability.

As shown in fig. 1, the magnetic isolation shim 2 is a thin circular shim, and the thin magnetic isolation shim 2 is easier to assemble than a block-shaped magnetic isolation balance block.

Further, motor magnetism spacer 2 for the thin circle gasket that stainless steel or copper, the rubber materials of non-magnetic conductivity made, adopt the material of non-magnetic conductivity to make, can prevent electric motor rotor at the operation in-process, magnet steel 4 magnetic leakage, the better laminating with electric motor rotor, balanced section 6 of rubber material avoids influencing electric motor rotor work.

The utility model adopts the boss to replace the motor balance block to realize the dynamic balance of the motor rotor, the boss and the motor shaft are integrated, and the assembly is simple; a tool withdrawal groove is additionally arranged on one side of the boss, so that the processing technology of the motor shaft is improved, and the influence of a processing fillet left by the root section of the boss on a magnetic isolation gasket of the motor is reduced, thereby influencing the dynamic balance of a motor rotor;

the utility model discloses interior block, balanced section and the end integrated into one piece that stretches out on the motor shaft guarantee motor rotor dynamic balance, and processing is simple, is equipped with a magnetism isolating gasket between the balanced section of motor shaft and the motor rotor outside, can prevent that the motor from appearing the magnetic leakage when moving, compares with the dynamic balance and the leak protection magnetism structure that adopt before, the utility model discloses integrated into one piece balanced section on the motor shaft has overcome grinding shaft shoulder length not good processing, and the shaft shoulder root section fillet is difficult to satisfy to make the matching length of shaft shoulder and balancing piece reduce, influence motor rotor dynamic balance's problem, assemble simpler, the cost is reduced, guarantees motor rotor simultaneously and realizes dynamic balance and prevent the magnetic leakage; compared with the balance block of the motor rotor adopted in the prior art, the motor magnetic isolation gasket is a thin sheet and has simple matching process, better matching with a motor shaft balance section and the motor rotor and better magnetic leakage prevention effect.

It should be noted that the above embodiments are merely representative examples of the present invention. The utility model can also have a plurality of deformations. Any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. The utility model provides a dynamic balance and magnetic leakage prevention's electric motor rotor structure which characterized in that: including electric motor rotor (3), install motor shaft (1) in electric motor rotor (3) and embedded magnet steel (4) in electric motor rotor (3), motor shaft (1) including embedded in the interior block of electric motor rotor (3), end balanced section (6) of butt in electric motor rotor (3) outside and at the section of stretching out of balanced section (6) rear side, interior block, balanced section (6) and stretch out end integrated into one piece so that electric motor rotor is at the during operation dynamic balance, be equipped with a magnetism spacer (2) between electric motor rotor (3) and balanced section (6).

2. A dynamically balanced and leakage proof rotor structure for an electrical machine according to claim 1, characterised in that the balancing sections (6) are radially extending protrusions.

3. A dynamically balanced and leakage proof electric motor rotor construction as claimed in claim 2, wherein said projections are stepped.

4. A dynamically balanced and leakage proof rotor structure for an electrical machine according to claim 2, characterised in that the radial width of the balancing section (6) is adapted to the radial width of the magnetic spacer (2).

5. A dynamic balance and leakage-proof motor rotor structure as claimed in claim 1, wherein a relief groove (5) for installing a motor magnetic isolation pad (2) is provided between the balance section (6) and the embedded section of the motor shaft (1).

6. A dynamic balancing and leakage prevention motor rotor structure as claimed in claim 1, wherein the motor magnetic isolation spacer (2) is a thin circular spacer.

7. A dynamic balancing and leakage prevention motor rotor structure according to claim 6, characterized in that the motor magnetic isolation gasket (2) is a thin round gasket made of non-magnetic stainless steel or copper, rubber material.

8. A dynamically balanced and leakage proof rotor structure for an electrical machine according to claim 1, characterised in that the balancing section (6) is cylindrical.