CN206164297U - External rotor DD motor in circumference magnetic field in induction rotor - Google Patents

Abstract

The utility model discloses an external rotor DD motor in circumference magnetic field in induction rotor, including hall assembly, stator, rotor, the rotor centers on the stator rotates, hall assembly fixed mounting is in on the stator, be provided with the plastic envelope structure on the stator, hall assembly with plastic envelope structure fixed connection, the structural hall assembly mounting structure that is provided with of plastic envelope, hall assembly mounting structure's size and the cooperation of hall support, the structural hall assembly installation fixed slot of still having seted up of plastic envelope, hall assembly is located and relies on the screw to fix through the installation fixed slot, the structural design hall element protection groove mounting groove of plastic envelope, the groove of stepping down has still been seted up on the iron core of stator, hall assembly is located mounting groove and stepping down between the groove, it is external through constitution hall assembly formation hall in laying hall PCB board on the hall support, circular field in the hall element induction rotor, magnetic field intensity is stable for the motor operation is reliable and stable.

Description

The outer rotor DD motors in inductiopn rotor inner periphery magnetic field

Technical field

The utility model is related to technical field of motors, and especially a kind of outer rotor DD in inductiopn rotor inner periphery magnetic field is electric Machine.

Background technology

Prior art inner and outer rotors DD motors typically have following several structures：One Hall pcb board and motor triple line one Body plastic packaging in injection molding material, PCB Hall element inductiopn rotor inner peripherys magnetic field, the subject matter that this structure is present is to be molded Because the factor such as injection pressure and injection molding material temperature can cause certain punching to Hall components and parts and other electronic devices and components in journey Hit, cause Hall component reliability to reduce, motor fraction defective increases in injection moulding process；Second structure Hall pcb board is laid Formed after Hall subassembly in Hall support, be installed to inductiopn rotor excircle magnetic field on stator, External rotor electric machine rotor is cylindrical All magnetic field is compared with inner periphery magnetic field can be weaker, affects hall sensing magnetic field, while transport is removed when Hall subassembly is installed to stator Easily loosen during fortune, affect to use, it is higher to will ultimately result in power of motor, affect motor overall performance.

Utility model content

For the shortcoming of prior art, it is electric that the utility model provides a kind of outer rotor DD in inductiopn rotor inner periphery magnetic field Machine.

For achieving the above object, the utility model adopts the technical scheme that the outer rotor DD in inductiopn rotor inner periphery magnetic field Motor, including Hall subassembly, stator, rotor, the rotor surrounds the stator rotation, and the Hall subassembly is fixedly mounted on institute State on stator；Plastic package structure is provided with the stator, the Hall subassembly is fixedly connected with the plastic package structure；The plastic packaging Hall subassembly mounting structure is provided with structure, the size of Hall subassembly mounting structure and Hall support coordinate；The plastic packaging knot Hall subassembly is further opened with structure fixing groove is installed, the Hall subassembly is located to be carried out admittedly by installing fixing groove by screw It is fixed；Hall element protector mounting groove is designed on the plastic package structure；Slot to make way is further opened with the iron core of the stator, it is described Hall subassembly is located between the mounting groove and slot to make way.

In the embodiment of the utility model one, the Hall subassembly include Hall element, pcb board, Hall support, it is described suddenly You are welded on the pcb board element, and the pcb board is fixedly mounted on the Hall support；Arrange on the Hall support There is Hall element protector, the Hall element is located in the Hall element protector, and the Hall element protector is located at In mounting groove.Now correspondingly, in the mounting groove of Hall element protector plastic package structure.

In the embodiment of the utility model one, the Hall element protector be three columns, the size of the column with The size of the mounting groove matches.The size of Hall element protector and the mounting groove on plastic package structure should size it is identical, Compound matching requirements.

In the embodiment of the utility model one, the size of the slot to make way is engaged with the Hall protector.

In the embodiment of the utility model one, the plastic package structure is located between the stator and rotor, the Hall group Part is located inside the plastic package structure.

The utility model has the advantages that：

The utility model by by Hall pcb board be placed in Hall support constitute Hall subassembly formed Hall it is external, suddenly Circular field in your element senses rotor, magnetic field intensity is stable so that motor operation is reliable and stable, and motor performance increases；Adopt With Hall element protector, mounting groove, slot to make way structure design Hall subassembly is easily installed, install after fastness it is good, Non-loosening, and the processability of product structure is strong, facilitates implementation mechanical automation.

The utility model is molded core structure by the suitable stator plastic package structure of design, makes Hall subassembly external simultaneously Can circular field in inductiopn rotor, reliability improves.Solve the reduction of motor longtime running reliability, Hall pcb board integrally to mould Seal the technical problems such as service life reduction, motor fraction defective increase and hall sensing rotor outer circle stable magnetic field is slightly worse.And very well Overcome mechanization degree in technique productions it is low, it is operational poor the problems such as.

Description of the drawings

Fig. 1 is the utility model patent electric machine structure hall sensing mode structural representation；

Fig. 2 is the utility model patent Hall subassembly and stator mounting structure schematic diagram；

Fig. 3 is the utility model patent injection core portion Hall element protector resigning structure design schematic diagram；

Fig. 4 is that the utility model patent plastic packaging stator part Hall subassembly support is installed and Hall element protector installs knot Structure design diagram；

Fig. 5 is book utility model patent Hall subassembly design structure schematic diagram.

1st, slot to make way；2nd, mounting groove；3rd, Hall element protector；4th, Hall subassembly mounting structure；5th, Hall subassembly；6th, it is fixed Son；53rd, Hall support.

Specific embodiment

With reference to embodiment and accompanying drawing（1 to 5）The utility model will be further described.

The outer rotor DD motors in the inductiopn rotor inner periphery magnetic field involved by the utility model, including Hall subassembly 5, stator 6th, rotor, the rotor is rotated around the stator 6, and the Hall subassembly 5 is fixedly mounted on the stator 6.The Hall Component 5 includes Hall element (not indicating), pcb board (not indicating), Hall support 53, and the Hall element is welded on described On pcb board, the pcb board is fixedly mounted on the Hall support 53；Hall element guarantor is provided with the Hall support 53 Protecting groove 3, the Hall element is located in the Hall element protector 3.

Plastic package structure is provided with the stator, the Hall subassembly 5 is fixedly connected with the plastic package structure；The plastic packaging Hall subassembly installation site 4 is provided with structure, the size and Hall support 53 of Hall subassembly mounting structure 4 coordinate, so as to protect Card Hall subassembly 5 is firmly installed, non-loosening, the phenomenon such as skew, hall sensing high precision.Meanwhile, it is further opened with plastic package structure Mounting groove 2, the Hall element protector 3 is located in mounting groove 2, and mounting groove 2 is used to install Hall element protector 3, installs Hall element protector 3 in the size and Hall subassembly 5 of groove 2 is engaged.

Size can be easy to Hall element to install while avoiding wherein between Hall element protector 3 and Hall element used Hall element is in the inside of Hall element protector 3 skew wobble effects hall position.Mounting groove 2 and Hall group on plastic package structure Position angle zero deflection between Hall element protector 3 on part 5, groove installation dimension tolerance fit rationally, can be fixed suddenly You do not cause position angle deflection by component 5, while not affecting to install.

Slot to make way 1 is further opened with the iron core of the stator 6, the Hall subassembly 5 is fixed on the mounting groove 3 and steps down Between groove 1.Size design rationally, ties between the slot to make way 1, mounting groove 2 and the three of Hall element protector 3, protects Card motor rotation is stablized, and motor performance is high, and in the present embodiment, the Hall element protector 3 is three columns, the column Size matches with the size of the mounting groove 2.

The design of Hall subassembly mounting structure 4 and mounting groove 2 on plastic package structure ensure that the firm installation of Hall subassembly 5, Three faces are blocked without abjection, are loosened after installation, and Hall element place groove is external, while the inductiopn rotor magnetic field inner ring of Hall element 5, fortune Row is reliable and stable, and the installation site of Hall subassembly 5 is solid and reliable, non-loosening, it is to avoid motor rotation is interfered.

Above-mentioned specific embodiment is used only to illustrate the utility model, rather than is that the utility model is limited, In objective of the present utility model and scope of the claims, what the utility model was made any does not pay creative labor Dynamic replacement and change, fall within the protection domain of the utility model patent.

Claims (5)

1. the outer rotor DD motors in a kind of inductiopn rotor inner periphery magnetic field, including Hall subassembly, stator, rotor, the rotor encloses Around the stator rotation, it is characterised in that the Hall subassembly is fixedly mounted on the stator；Modeling is provided with the stator Seal structure, the Hall subassembly is fixedly connected with the plastic package structure；Hall subassembly is provided with the plastic package structure knot is installed Structure, the size of Hall subassembly mounting structure and Hall support coordinate；Hall subassembly is further opened with the plastic package structure and installs solid Determine groove, the Hall subassembly is located at and is fixed by screw by installing fixing groove；Hall unit is designed on the plastic package structure Part protector mounting groove；Slot to make way is further opened with the iron core of the stator, the Hall subassembly is located at the mounting groove and allows Between the groove of position.

2. the outer rotor DD motors in inductiopn rotor inner periphery magnetic field as claimed in claim 1, it is characterised in that the Hall group Part includes Hall element, pcb board, Hall support, and the Hall element is welded on the pcb board, the pcb board fixed installation On the Hall support；Hall element protector is provided with the Hall support, the Hall element is located at the Hall In element protection groove, the Hall element protector is located in mounting groove.

3. the outer rotor DD motors in inductiopn rotor inner periphery magnetic field as claimed in claim 2, it is characterised in that the Hall unit Part protector is three columns, and the size of the column matches with the size of the mounting groove.

4. the outer rotor DD motors in inductiopn rotor inner periphery magnetic field as claimed in claim 2 or claim 3, it is characterised in that described to allow The size of position groove is engaged with the Hall protector.

5. the outer rotor DD motors in inductiopn rotor inner periphery magnetic field as claimed in claim 4, it is characterised in that the plastic packaging knot Structure is located between the stator and rotor, and the Hall subassembly is located at outside the plastic package structure.