CN201178341Y

CN201178341Y - Motor rotor construction

Info

Publication number: CN201178341Y
Application number: CNU2008200070216U
Authority: CN
Inventors: 洪银树; 尹佐国
Original assignee: JIANZHUN DYNAMO IND CO Ltd
Current assignee: JIANZHUN DYNAMO IND CO Ltd; Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2008-03-05
Filing date: 2008-03-05
Publication date: 2009-01-07
Anticipated expiration: 2018-03-05

Abstract

The utility model relates to a motor rotor structure. The motor rotor structure is characterized in that the motor rotor comprises an axis which is in the shape of the cylindrical long rod; a plurality of magnet cramps which are in the shaped of thin circular plate, a center hole in the center of the magnet cramps for the axis to penetrate, at least three catching grooves which are arranged at the periphery of the magnet cramps, penetrate the circumferential edge of the magnet craps and have a shape of similarly a dovetail slot, which is tapered from outside to inside; and at least three magnets which are corresponding to the catching groove shape of the magnet cramps and are embedded and fixed therein. The motor rotor structure has the advantages of rapid and convenient assembly, no accumulated tolerance, and no requirement of excessively strict size precision. Moreover, the magnet cramps and a magnet gasket can be made by punch-forming to simplify the production process and reduce the cost.

Description

Motor rotor Motor rotor structure

Technical field

The utility model relates to a kind of motor rotor Motor rotor structure, is meant that especially a kind of spare part is few, simple in structure and does not need too to be strict with the precision size degree, with the motor rotor Motor rotor structure that reduces production costs.

Background technology

As shown in Figure 1, the DC Brushless Motor rotor structure of commonly using includes a plurality of magnet 10, a plurality of silicon steel sheet 20, a plurality of gim peg 30 and two end casings 40.

Wherein, magnet 10 is the arc plate body, and its dual side-edge is formed with symmetrical inclined-plane 11, makes the side of two magnet 10 keep can constituting a dovetail groove 12 jointly when suitably distance is arranged side by side.

Silicon steel sheet 20 is a thin type plectane body, its central authorities are provided with centre bore 21 and penetrate for an axle center (not shown), periphery is provided with the circular hole 22 of a plurality of equidistant arrangements, circular hole 22 adjacent silicon steel discs 20 peripheries are provided with the width breach 23 littler than circular hole 22, and the minimum widith of the corresponding dovetail groove 12 of the width of breach 23.

The cylinder of gim peg 30 corresponding circular holes 22, side have the fin 31 that width approximates breach 23, and fin 31 outer rims form dovetail block 32, and inclined-plane 33, two ends that dovetail block 32 2 lateral margins have corresponding magnet 10 inclined-planes 11 then have end inclined-plane 34 respectively.

End casing 40 1 sides have a plurality of location teats 41 that hold into dovetail groove 12, and location teat 41 is provided with the inclined-plane 42 on corresponding dovetail block 32 end inclined-planes 34.

Again as shown in Figure 2, be that gim peg 30 is located in the circular hole 22 of silicon steel sheet 20 with its serial connection during assembling, then magnet 10 inclined-planes 11 are coated with adhesive agent respectively with dovetail block 32 inclined-planes 33, magnet 10 inclined-planes 11 are slipped into, with the wedge-like engagement that forms dovetail block 32 and dovetail groove 12 and stick together fixing along dovetail block 32 inclined-planes 33.

Location teat 41 inclined-planes 42 of end casing 40 also are coated with adhesive agent respectively with gim peg 30 end inclined-planes 34, and will locates teat 41 and be linked in the dovetail groove 12 of 10 of two magnet, and the inclined-plane 42 that makes location teat 41 binds with the end inclined-plane 34 of gim peg 30 to be fixed.

But there is following shortcoming in the DC Brushless Motor rotor structure that this kind commonly used:

(1) various, the complex structure of spare part: commonly using structure must be located in gim peg in the silicon steel sheet circular hole of storehouse earlier, then utilize the side by side dovetail groove wedge-like engagement of the common formation of institute of dovetail block and magnet again, be separately fixed at the magnet end with two end casings more at last, and also must be coated with adhesive agent between each spare part with fixing, assembling process is quite loaded down with trivial details.

(2) the precision requirement height of size: because it is various to commonly use the spare part of structure, the cumulative limit in the time of can causing assembling is big, so require also to improve relatively for the precision size degree of spare part.

(3) production cost height: this kind commonly used structure and comprised three kinds of procedure for producing at least, first kind of processing procedure is to produce silicon steel sheet with punch forming, second kind of processing procedure is to produce gim peg and end casing with ejection formation, and the third processing procedure then is to produce magnet with the line cutting, therefore causes production cost high.

Summary of the invention

At the problems referred to above, main purpose of the present utility model is to provide a kind of motor rotor Motor rotor structure, and not only spare part is few, simple in structure, and does not need too to be strict with the precision size degree, can reduce production costs.

For achieving the above object, the utility model by the following technical solutions: a kind of motor rotor Motor rotor structure is characterized in that comprising: an axle center is the body length body of rod; A plurality of magnet cramps are thin type plectane body, and its central authorities have the centre bore that can supply described axle center to wear, and periphery is provided with the catching groove more than at least two, and described catching groove connects described magnet cramp periphery, and big outer little similar dovetail groove kenel in being; Magnet more than at least two is the catching groove kenel of corresponding described magnet cramp and is embedded and is fixed in wherein.

In the above-mentioned the technical solution of the utility model, be arranged with two magnet pads on the described axle center, two described magnet pads are thin type plectane body and distinguish block in described magnet two ends, and its central authorities have the centre bore that can supply described axle center to wear.

In the above-mentioned the technical solution of the utility model, described magnet cramp is made with permeability magnetic material.

In the above-mentioned the technical solution of the utility model, the centre bore internal diameter of described magnet cramp approximates described axle center external diameter, and is tight fit with described axle center.

In the above-mentioned the technical solution of the utility model, the centre bore internal diameter of described magnet pad approximates the axle center external diameter, and is tight fit with described axle center.

In the above-mentioned the technical solution of the utility model, have a plane in the described catching groove, the corresponding described catching groove of described magnet plane is provided with one smooth, and is coated with adhesive agent therebetween and binds fixing.

In the above-mentioned the technical solution of the utility model, described magnet one side is arc convex attitude, and described arc convex attitude is towards the described catching groove outside.

In the above-mentioned the technical solution of the utility model, the arc convex curvature of described magnet is less than described magnet cramp external diameter, and its center of curvature described axle center central authorities of staggering.

Adopt technique scheme, the utility model is after embedding magnet the magnet cramp catching groove of storehouse, combination between the two can utilize the coating adhesive agent to fix, also can utilize two magnet pad blocks to fix in magnet two ends, not only assembling fast, conveniently, the problem that does not more have cumulative limit is not so need too to be strict with the precision size degree.And magnet cramp of the present utility model and magnet pad all can produce in the punch forming manufacturing, can simplify procedure for producing, reduce production costs.

Description of drawings

Fig. 1 is a decomposing schematic representation of commonly using structure;

Fig. 2 is a generalized section of commonly using structure;

Fig. 3 is a decomposing schematic representation of the present utility model;

Fig. 4 is an assembling schematic diagram of the present utility model;

Fig. 5 is a generalized section of the present utility model;

Fig. 6 is a sectional schematic diagram of the present utility model.

Embodiment

Now lifting following examples also is elaborated to structure of the present utility model, characteristics and effect in conjunction with the accompanying drawings.

As shown in Figure 3, be a kind of motor rotor Motor rotor structure provided by the utility model, it comprises:

One axle center 50 is the body length body of rod;

A plurality of magnet cramps 60, be thin type plectane body and make with permeability magnetic material, its central authorities have a centre bore 61, centre bore 61 internal diameters approximate axle center 50 external diameters, magnet cramp 60 peripheries have the catching groove 62 (shown in the figure being four) more than at least two, catching groove 62 must connect magnet cramp 60 peripheries, and big outer little similar dovetail groove kenel in forming, and has a plane 63 in the catching groove 62.

Magnet 70 more than at least two (shown in the figure being four) is a long slab body, and the one side is smooth 71 of corresponding catching groove 62 planes 63, and opposite side then is an arc convex attitude.

Two magnet pads 80 are thin type plectane body, and central authorities have a centre bore 81, and the internal diameter of centre bore 81 approximates the external diameter in axle center 50.

As Fig. 4, shown in Figure 5, be earlier axle center 50 to be worn the centre bore 61 of the magnet cramp 60 of storehouse during the utility model assembling, and be tight fit between centre bore 61 and the axle center 50.

With smooth 71 coating adhesive agent of magnet 70, magnet 70 is slipped into along catching groove 62 by magnet cramp 60 sides of storehouse again, paste with smooth 71 and support the plane 63 of being fixed in magnet cramp 60, and locate with wedge-like engagement mode build-in.

At last, also can set up the sheathed block of two magnet pads, 80 difference in magnet 70 2 ends, and also be tight fit between the centre bore 81 of magnet pad 80 and the axle center 50, can further guarantee magnet 70 fixed positions, can when high speed rotating, not come off.

In addition, as shown in Figure 6, magnet of the present utility model 70 is chimeric to be fixed in after the catching groove 62 of magnet cramp 60, a side that is arc convex attitude must be outward, and the arc convex curvature of each magnet 70 must be less than magnet cramp 60 external diameters, therefore and its center of curvature must not be positioned at axle center 50 central authorities, makes the arc convex curvature of each magnet 70 not be positioned on the same circumference, can make the magnetic torsion of magnet 70 little, the magnetic line of force concentrates.

Therefore, the utility model has the following advantages than conventional construction:

(1) spare part is few, simple in structure: the utility model embeds magnet after the magnet cramp catching groove of storehouse, can utilize following two kinds of methods to make the two firm combination, the first is cemented at magnet in the catching groove with adhesive agent, second it be that block is at magnet two ends respectively with two magnet pads, and two kinds of methods all have advantage easy to assembly.

(2) need not be strict with the precision size degree: because spare part of the present utility model is few, thus there is not the problem of cumulative limit, so do not need too to be strict with the precision size degree.

(3) reduce production costs: magnet cramp of the present utility model and magnet pad all can be produced in the punch forming manufacturing, therefore can simplify procedure for producing, reduce production costs.

In sum, many characteristics of the present utility model real initiative that belongs in the middle of like product.

The above only is a preferable enforcement kenel of the present utility model, and the equivalent structure that all application the utility model specifications, claims or accompanying drawing are done changes, and all should be included in the scope of patent protection of the present utility model.

Claims

1, a kind of motor rotor Motor rotor structure is characterized in that comprising:

One axle center is the body length body of rod;

A plurality of magnet cramps are thin type plectane body, and its central authorities have the centre bore that can supply described axle center to wear, and periphery is provided with the catching groove more than at least two, and described catching groove connects described magnet cramp periphery, and big outer little similar dovetail groove kenel in being;

Magnet more than at least two is the catching groove kenel of corresponding described magnet cramp and is embedded and is fixed in wherein.

2, motor rotor Motor rotor structure as claimed in claim 1, it is characterized in that: be arranged with two magnet pads on the described axle center, two described magnet pads are thin type plectane body and distinguish block in described magnet two ends, and its central authorities have the centre bore that can supply described axle center to wear.

3, motor rotor Motor rotor structure as claimed in claim 1 is characterized in that: described magnet cramp is made with permeability magnetic material.

4, motor rotor Motor rotor structure as claimed in claim 1 is characterized in that: the centre bore internal diameter of described magnet cramp approximates described axle center external diameter, and is tight fit with described axle center.

5, motor rotor Motor rotor structure as claimed in claim 2 is characterized in that: the centre bore internal diameter of described magnet pad approximates the axle center external diameter, and is tight fit with described axle center.

6, motor rotor Motor rotor structure as claimed in claim 1 is characterized in that: have a plane in the described catching groove, the corresponding described catching groove of described magnet plane is provided with one smooth, and is coated with adhesive agent therebetween and binds fixing.

7, motor rotor Motor rotor structure as claimed in claim 1 is characterized in that: described magnet one side is arc convex attitude, and described arc convex attitude is towards the described catching groove outside.

8, motor rotor Motor rotor structure as claimed in claim 7 is characterized in that: the arc convex curvature of described magnet is less than described magnet cramp external diameter, and its center of curvature described axle center central authorities of staggering.