CN202309274U

CN202309274U - Motor with permanent magnetic rotor

Info

Publication number: CN202309274U
Application number: CN201120335249XU
Authority: CN
Inventors: 刘岳兵; 史长忠
Original assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Current assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Priority date: 2011-09-07
Filing date: 2011-09-07
Publication date: 2012-07-04
Anticipated expiration: 2021-09-07

Abstract

A motor with a permanent magnetic rotor comprises a rotor core arranged on a rotor shaft. More than one permanent magnet is arranged on the rotor core. A protective component and sealing parts of the rotor core are further arranged on the rotor core, and the sealing parts are arranged between the rotor core and the protective component. The rotor core is provided with a gap position corresponding to the protective component, and the gap position and the protective component form an assembling groove for installing the permanent magnet. The protective component and the sealing parts of the rotor core are additionally arranged on the rotor core, and an injection molding layer is covered on outer surfaces of the rotor core, the sealing parts, the protective component and the permanent magnet through integral plastic covering processing technology to form a sealing permanent magnetic rotor, therefore the rotor has good rust-resistant effect, not only can be used in environment with large relative humidity, but also can be immersed into water to be used, and enlarges an application range. Simultaneously, corrosive or impurities can be effectively prevented from entering the permanent magnetic rotor to affect working efficiency and service life of the permanent magnetic rotor, and the rotor is especially applicable to direct current brushless motors.

Description

The motor of band p-m rotor

Technical field

The utility model relates to a kind of motor, particularly a kind of motor with p-m rotor.

Background technology

Traditional p-m rotor that is used for DC Brushless Motor; When in the bigger environment of some relative humidity, using; Mostly the general permanent magnetic material that adopts is ferrite or moulds the magnetic body; With respect to ferrite or mould for the magnetic body, rare earth permanent-magnetic materials such as neodymium iron boron are owing to have higher coercive force, and lower remanent magnetism performance is superior to ferrite or moulds the magnetic body.If use conventional method that rare earth materials such as neodymium iron boron are made p-m rotor, p-m rotor is easier to get rusty, thereby influences its service behaviour.Therefore, be necessary to do further improvement and perfect.

The utility model content

The purpose of the utility model aims to provide the motor of the strong band p-m rotor of a kind of simple and reasonable, with low cost, good sealing effect and rustless property, to overcome weak point of the prior art.

A kind of motor by this purpose design with p-m rotor; Comprise the rotor core that is set on the armature spindle; Rotor core is provided with more than one permanent magnet; Its architectural feature is also to be provided with protecting component and seal thereof on the said rotor core, and seal is arranged between rotor core and the protecting component; The corresponding protecting component of rotor core is provided with clearance position, and this clearance position and protecting component formation one are used to install the fitting recess of permanent magnet.

Said magnet ring is set around on the rotor core, and with the fitting recess matching and fixing; The outer surface of rotor core, seal, protecting component and permanent magnet wraps up or is coated with injection molded layers; The corresponding injection molded layers in the two ends of armature spindle is respectively arranged with embedding groove.

Said protecting component comprises mounting bracket, and mounting bracket is arranged at the rotor core two ends; Mounting bracket is provided with the location division, and the corresponding location division of rotor core is provided with positioning match part.

Said location division comprises more than one positioning convex, and positioning convex is arranged at a side of mounting bracket, location hole or the location notch of positioning match part for matching with positioning convex.

The corresponding seal of said mounting bracket is provided with groove, and seal is sheathed on the armature spindle, and is clamped and fastened between mounting bracket and the rotor core; The sealing part is a sealing ring, and the cross section of sealing ring is cross or quadrangle.

The material of said sealing ring, mounting bracket and injection molded layers is plastic part or rubber part; The material of armature spindle is a metallic article.

Set up protecting component and seal thereof on the rotor core of the utility model, the processing technology plastic through integral body is wrapped in rotor core with injection molded layers, seal; The outer surface of protecting component and permanent magnet; Form the p-m rotor of a closed type, have good rust-proof effect, not only can in the bigger environment of relative humidity, use; Also can immerse in the water and use, enlarge its scope of application; While can effectively avoid corroding thing or impurity gets in the p-m rotor, and influences the operating efficiency and the useful life of p-m rotor; And the characteristics that it has simple and reasonable, good sealing effect, assembling is easy and be convenient to processing are specially adapted to DC Brushless Motor.

Description of drawings

Fig. 1 is an embodiment perspective view of the utility model.

Fig. 2 looks the sectional structure sketch map for the master after Fig. 1 assembling.

Fig. 3 is the A-A direction sectional structure sketch map among Fig. 2.

Fig. 4 is the B place enlarged diagram among Fig. 2.

Fig. 5 is the assembling sketch map of armature spindle and rotor core.

Fig. 6-Fig. 7 is the assembling sketch map of armature spindle and sealing ring.

Fig. 8-Fig. 9 is the assembling sketch map of rotor core and plastic processing frame and rotor core.

Among the figure: 1 is armature spindle, and 1.1 is embedding groove, and 2 is rotor core, and 2.1 is location hole, and 2.2 is clearance position, and 3 is sealing ring, and 4 is mounting bracket, and 4.1 is positioning convex, and 4.2 is groove, and 4.3 is fitting recess, and 5 is permanent magnet, and 6 is injection molded layers.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1-Fig. 9, the motor of this band p-m rotor comprises the rotor core 2 that is set on the armature spindle 1, and the material of armature spindle 1 is a metallic article, during assembling, earlier armature spindle 1 is pressed in the axis hole of rotor core 2, and armature spindle 1 is an interference fit with iron core, sees Fig. 5.Also be provided with protecting component and seal thereof on the rotor core 2, rotor core 2 corresponding protecting components are provided with clearance position 2.2.Rotor core 2 is provided with 2-8 permanent magnet 5; Permanent magnet 5 is a NdFeB material, and permanent magnet 5 constitutes a p-m rotor jointly around being located on the rotor core 2; Its purpose is: adopt rare earth permanent-magnetic material making permanent magnets 5 such as neodymium iron boron; The p-m rotor performance is improved greatly,, effectively improved the easy problem of rustiness of rare earth permanent-magnetic materials such as neodymium iron boron simultaneously to solve with ferrite or to mould magnetic body common used material and make the not enough problem of p-m rotor performance; Prolong its useful life, to realize that p-m rotor can use in water.

Protecting component comprises mounting bracket 4, and mounting bracket 4 is arranged at rotor core 2 two ends.Mounting bracket 4 is provided with the location division, and rotor core 2 corresponding location divisions are provided with positioning match part.The location division is three positioning convex 4.1, and positioning convex 4.1 is arranged at a side of mounting bracket 4, the location hole 2.1 of positioning match part for matching with positioning convex 4.1.Seal is arranged between rotor core 2 and the protecting component.Seal is a sealing ring 3, and the cross section of sealing ring 3 is cross.

Sealing ring 3 is inserted in the two ends of armature spindle 1 respectively, lets sealing ring 3 contact with the end face of rotor core 2 simultaneously, sees Fig. 6-Fig. 7, and mounting bracket 4 corresponding seals are provided with groove 4.2.Pass armature spindle 1 to mounting bracket 4 again, make location hole 2.1 matching and fixing on its positioning convex 4.1 and the rotor core 2, this moment, sealing ring 3 was clamped and fastened between mounting bracket 4 and the rotor core 2, and let sealing ring 3 that certain decrement is arranged, and saw Fig. 4.Clearance position 2.2 on the rotor core 2 and mounting bracket 4 formation one are used to install the fitting recess 4.3 of permanent magnet 5, see Fig. 8, and permanent magnet 5 is assembled in the fitting recess 4.3.Through the plastic processing technology of integral body injection molded layers 6 is wrapped in the outer surface of rotor core 2, seal, protecting component and permanent magnet 5 at last; Form the p-m rotor of a closed type; See Fig. 2; Effectively avoid corroding thing or impurity and get in the p-m rotor, and influence its operating efficiency and useful life, the material of sealing ring 3, mounting bracket 4 and injection molded layers 6 is plastic part or rubber part.The corresponding injection molded layers 6 in the two ends of armature spindle 1 is respectively arranged with embedding groove 1.1, can be embedded in the groove 4.2 during with 6 injection mouldings of realization injection molded layers, improves its binding ability.

Claims

1. motor with p-m rotor; Comprise the rotor core (2) that is set on the armature spindle (1); Rotor core (2) is provided with more than one permanent magnet (5); It is characterized in that also being provided with protecting component and seal thereof on the said rotor core (2), seal is arranged between rotor core (2) and the protecting component; The corresponding protecting component of rotor core (2) is provided with clearance position (2.2), and this clearance position (2.2) forms one with protecting component and is used to install the fitting recess (4.3) of permanent magnet (5).

2. according to the motor of the said band p-m rotor of claim 1, it is characterized in that said permanent magnet (5) around being located on the rotor core (2), and with fitting recess (4.3) matching and fixing; The outer surface of rotor core (2), seal, protecting component and permanent magnet (5) wraps up or is coated with injection molded layers (6); The corresponding injection molded layers in the two ends of armature spindle (1) (6) are respectively arranged with embedding groove (1.1).

3. according to the motor of claim 1 or 2 said band p-m rotors, it is characterized in that said protecting component comprises mounting bracket (4), mounting bracket (4) is arranged at rotor core (2) two ends; Mounting bracket (4) is provided with the location division, and the corresponding location division of rotor core (2) is provided with positioning match part.

4. according to the motor of the said band p-m rotor of claim 3; It is characterized in that said location division comprises more than one positioning convex (4.1); Positioning convex (4.1) is arranged at a side of mounting bracket (4), location hole (2.1) or the location notch of positioning match part for matching with positioning convex (4.1).

5. according to the motor of the said band p-m rotor of claim 4, it is characterized in that the corresponding seal of said mounting bracket (4) is provided with groove (4.2), seal is sheathed on the armature spindle (1), and is clamped and fastened between mounting bracket (4) and the rotor core (2); The sealing part is sealing ring (3), and the cross section of sealing ring (3) is cross or quadrangle.

6. according to the motor of the said band p-m rotor of claim 5, it is characterized in that the material of said sealing ring (3), mounting bracket (4) and injection molded layers (6) is plastic part or rubber part; The material of armature spindle (1) is a metallic article.