CN201435667Y

CN201435667Y - Improved direct-current brushless motor

Info

Publication number: CN201435667Y
Application number: CN2009200498558U
Authority: CN
Inventors: 张正良
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-09
Filing date: 2009-01-09
Publication date: 2010-03-31
Anticipated expiration: 2019-01-09

Abstract

The utility model relates to an improved direct-current brushless motor, comprising an assembled motor housing set, a motor stator set, a motor rotator set and a motor rear end cover set, wherein themotor housing set consists of a front bearing, an oil sealing, a housing body and a sealing gasket; the motor stator consists of a stator core, a triphase winding, a coil insulator, a short connectingring and a lead wire; the triphase winding adopts a way of concentrating winding and the coil of each winding is connected in parallel; the lead wire is stretched out from the inside of the motor; the motor rotator set consists of a shaft, a parallel key, a dynamic balance baffle, a rotator core and a permanent magnet; the two sides of the rotator core are provided with the dynamic balance bafflefor balance detection; and the motor rear end cover set consists of a rear end cover body, a corrugated gasket, a rear bearing, a Hull device and a Hull lead wire, wherein the Hull lead wire is stretched out from the inside of the motor. The utility model has the advantages of compact structure, convenient siring and assembly, excellent performance, good sealing performance, thus lowering the manufacturing and material cost and broadening the application range.

Description

A kind of improved DC Brushless Motor

Technical field:

The utility model relates to the motor technology field, particularly relates to a kind of improved DC Brushless Motor technology.

Background technology:

Brushless electric machine has been avoided both mechanical wear, thereby has been improved the durability of motor greatly owing to adopted hall position sensor to replace commutator and the carbon brush configuration in the brush motor.But present dc brushless motor needs installing space little at some, the efficient height, the occasion of good waterproof performance, be difficult to satisfy long-term, instructions for use reliably is (such as the tunnel of radiator of car engine cooling fan with DC Brushless Motor or some humid environments, engineering occasions such as colliery are with the blower fan DC Brushless Motor), and these occasions must rely on fan or blower fan to work normally again fully, and are relatively little as near the space radiator of car engine in addition, high humidity, obviously design a power density height, superior performance, sealing, high reliability, it is very important that the DC Brushless Motor of good endurance just seems.

The utility model content:

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and can satisfy that environment space is relatively little, high humidity, reliability requirement height, DC Brushless Motor that life requirement is good.

A kind of improved DC Brushless Motor according to this practicality provides comprises: Zhuan Pei motor case is always organized mutually, motor stator is always organized, motor rotor is always organized, the motor rear end cap is always organized.The total group of the shell of motor is made up of fore bearing (1), oil sealing (2), outer cover body (3) and gasket seal (4) for improved sealed structure; Motor stator is always organized by stator core (5), three phase windings (6), coil insulation thing (7), short circuit ring (8), lead-in wire (9) is formed, the punching shape of its stator core is through the magnetic circuit optimal design, coil adopted parallel way to connect under its three phase winding adopted and concentrates winding configuration and every phase winding, its coil insulation thing effect is the insulation resistance that improves between three phase winding all coils and the stator core, its short circuit ring has the neutral point that convenient three phase windings are connected into " Y " (star) connection, and its lead-in wire is extended and motor case is always organized from motor inside to the outside, rubber parts 1 (10) sealing of anti-high oil temperature is adopted in the position of the total set of contact of motor rear end cap; The total group of motor rotor is made up of axle (11), parallel key (12), dynamic balancing baffle plate (13), rotor core (14), permanent magnet (15), jam nut (16) and cushion block (17), and wherein the dynamic balancing baffle plate of rotor core both sides is used for the Working position that rotor dynamic balancing test back amount of unbalance removes heavy null method; The total group of motor rear end cap is made up of rear end cap body (18), corrugated gasket (19), rear bearing (20), Hall sensor device (21), Philip's head screw (22) and Hall lead-in wire (23), and its Hall lead-in wire is extended to the outside from motor inside and always organized with motor case, the position of the total set of contact of motor rear end cap adopts the rubber parts 2 (24) of anti-high oil temperature to seal.

A kind of improved DC Brushless Motor that provides according to the utility model also has following attached technical characterictic:

The total group of described shell is improved sealed structure, and simple in structure, part is few.

Described stator iron-core lamination comprises the dovetail groove of the identical narrow bottom width of mouth of 12 shapes, and the quantity of groove can be divided exactly by 3.

Described two dynamic balancing baffle plates are positioned at the two sides of rotor core, and two dynamic balancing baffle plates are identical on geometry and material, and its material is non-magnetic conductive material.

The relative prior art of a kind of improved DC Brushless Motor that provides according to the utility model has following advantage:

At first, improved DC Brushless Motor described in the utility model, because outer cover body adopts barrel-like structure, this is just existing with adopting the simple in structure of front end housing and shell, compact, good airproof performance, and lacked the cooperation of both seams, reduced the clamping times of machined into, because the hole that the fore bearing hole of outer cover body cooperates with frame diameter is a homonymy, can put in place in a clamping processing of lathe, improved because existing No. 2 clamping accumulated errors cause concentricity poor (for the motor of rotation, concentricity is most important).

Secondly, improved DC Brushless Motor described in the utility model, because the stator iron-core lamination shape of optimal design, no matter be automatic equipment coiling or artificial hand spiral, winding displacement is convenient, the coil outward appearance is neat.

Once more, improved DC Brushless Motor described in the utility model, its short circuit ring has the neutral point that convenient three phase windings are connected into " Y " (star) connection, as everyone knows, the Wound-rotor type stator core is every in the existing three-phase has 2 coils, the more a plurality of coils that have mutually at least, what coil adopted between end to end is tandem-type connection, this just means when spiral and links together that this has obviously increased the complexity of spooling equipment anchor clamps, equipment manufacturing cost height.The design of the novel employing short circuit of this practicality ring, coil adopted parallel way to connect under three phase windings adopted and concentrate winding configuration and every phase winding, can be incoherent between each coil of every like this phase winding, obviously reduced the difficulty of coiling, also shortened the length of the end enamelled wire of the utmost point and interpolar in addition, saved the loss of copper, during production in enormous quantities, economic benefit is just fairly obvious.

At last, improved DC Brushless Motor described in the utility model, two dynamic balancing baffle arrangements have been adopted: in motor manufacturing technology rotor dynamic balancing operation, the elimination of amount of unbalance has 2 kinds of methods, and the one, go heavy method, second kind is weighting procedure (generally adopting balance mud mounting method), and for high-speed electric expreess locomotive, the inertia of rotor is very big, and the second method reliability is too poor, and different balance mud all has the restriction of speed; The utility model adopts and goes heavy method, goes to heavy position on the dynamic balancing baffle plate of non-magnetic material, to the not influence of resultant magnetic field of stator and rotor; Yet the heavy method of going that prior motor manufacturer adopts is: going to heavy position all is on the outer surface unshakable in one's determination of rotor, and this is with regard to making the resultant magnetic field of stator and rotor that distortion shape in various degree be arranged, and is unfavorable to the dynamic property of motor.

Description of drawings:

Fig. 1 is improved DC Brushless Motor structural representation half sectional view.

Fig. 2 is the schematic appearance of stator iron-core lamination.

Fig. 3 is the cutaway view of short circuit ring.

Fig. 4 is Fig. 3 left view.

Fig. 5 is the every wiring schematic diagrams that wind the line mutually of three phase windings.

Fig. 6 is three a phase windings coiling wiring schematic diagram.

Embodiment:

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Label declaration among Fig. 1: the total group of the shell of motor has fore bearing (1), oil sealing (2), outer cover body (3), gasket seal (4); The total group of motor stator has stator core (5), three phase windings (6), coil insulation thing (7), short circuit ring (8), lead-in wire (9), rubber parts one (10); The total group of motor rotor has axle (11), parallel key (12), dynamic balancing baffle plate (13), rotor core (14), permanent magnet (15), jam nut (16), cushion block (17); The total group of motor rear end cap has rear end cap body (18), corrugated gasket (19), rear bearing (20), Hall sensor device (21), Philip's head screw (22), Hall lead-in wire (23), rubber parts two (24).

As can be seen from Figure 1:

Motor case is always organized by fore bearing (1), oil sealing (2), outer cover body (3), gasket seal (4) is formed, earlier fore bearing (1) is pressed into outer cover body (3), again oil sealing (2) is pressed in the outer cover body (3), when total assembling, is posted on outer cover body (3) and the plane that rear end cap body (18) contacts gasket seal (4) is flat;

Motor stator is always organized by stator core (5), three phase windings (6), coil insulation thing (7), short circuit ring (8), lead-in wire (9), rubber parts one (10) is formed, earlier coil insulation thing (7) is inserted in the stator core (5), finish the winding process of three phase windings (6) then, afterwards short circuit ring (8) is welded on a side of three phase windings (6), lead-in wire (9), rubber parts one (10) welds and fixes then;

The total group of motor rotor has axle (11), parallel key (12), dynamic balancing baffle plate (13), rotor core (14), permanent magnet (15), jam nut (16), cushion block (17) is formed, earlier axle (11) is penetrated in the dynamic balancing baffle plate (13) by the shaft extension side, then parallel key (12) is inserted in the holddown groove of axle (11), again rotor core (14) is placed axle (11), place rotor core (14) permanent magnet (15) is bonding again, dynamic balancing baffle plate (13) is installed successively again, cushion block (17) and jam nut (16);

The total group of motor rear end cap has rear end cap body (18), corrugated gasket (19), rear bearing (20), Hall sensor device (21), Philip's head screw (22), Hall lead-in wire (23), rubber parts two (24) is formed, earlier corrugated gasket (19) is put into rear end cap body (18), rear bearing (20) is installed then successively, Hall sensor device (21), welded Hall lead-in wire (23), fix rubber parts two (24), at last Philip's head screw (22) is penetrated Hall sensor device (21) after, be locked in the rear end cap body (18);

Successively the total group of motor stator is put into motor case at last and always organize, put into motor rotor again and always organize, install and fix the motor rear end cap at last and always organize.

The above, it only is the utility model preferred embodiment, basis is non-does any pro forma restriction to the utility model, and every foundation technical spirit of the present utility model is made simple modification, equivalent variations, all appointed in the scope that belongs to technical solutions of the utility model embodiment.

Claims

1, a kind of improved DC Brushless Motor, comprise: Zhuan Pei motor case is always organized mutually, motor stator is always organized, motor rotor is always organized, the motor rear end cap is always organized, and the shell of motor is always organized to be made up of fore bearing (1), oil sealing (2), outer cover body (3) and gasket seal (4); Motor stator is always organized by stator core (5), three phase windings (6), coil insulation thing (7), short circuit ring (8), lead-in wire (9) is formed, the punching shape of its stator core is through the magnetic circuit optimal design, coil adopted parallel way to connect under its three phase winding adopted and concentrates winding configuration and every phase winding, its coil insulation thing effect is the insulation resistance that improves between three phase winding all coils and the stator core, its short circuit ring has the neutral point that convenient three phase windings are connected into " Y " (star) connection, and its lead-in wire is extended and motor case is always organized from motor inside to the outside, rubber parts one (10) sealing of anti-high oil temperature is adopted in the position of the total set of contact of motor rear end cap; The total group of motor rotor is made up of axle (11), parallel key (12), dynamic balancing baffle plate (13), rotor core (14), permanent magnet (15), jam nut (16) and cushion block (17), and wherein the dynamic balancing baffle plate of rotor core both sides is used for the Working position that rotor dynamic balancing test back amount of unbalance removes heavy null method; The total group of motor rear end cap is made up of rear end cap body (18), corrugated gasket (19), rear bearing (20), Hall sensor device (21), Philip's head screw (22) and Hall lead-in wire (23), and its Hall lead-in wire is extended to the outside from motor inside and always organized with motor case, the position of the total set of contact of motor rear end cap adopts the rubber parts two (24) of anti-high oil temperature to seal.

2, improved DC Brushless Motor according to claim 1 is characterized in that described stator iron-core lamination shape through the magnetic circuit optimal design, and the quantity of the winding slot of its punching can be divided exactly by 3.

3, improved DC Brushless Motor according to claim 1 is characterized in that three phase windings adopt concentrated winding configuration and the affiliated coil of every phase winding to adopt parallel way to connect.

4, improved DC Brushless Motor according to claim 1 is characterized in that described short circuit ring is to adopt the pad of glass fibre and coil welding to form, and the quantity of pad equals the number of all coils of three phase windings.

5, improved DC Brushless Motor according to claim 1 is characterized in that two dynamic balancing baffle plates are positioned at the two sides of rotor core, and two dynamic balancing baffle plates are identical on geometry and material.

6, improved DC Brushless Motor according to claim 1 is characterized in that rubber parts one and rubber parts two adopt independently card slot type structure.