CN207652148U

CN207652148U - Stator core holder

Info

Publication number: CN207652148U
Application number: CN201820050010.XU
Authority: CN
Inventors: 项兆先
Original assignee: Taizhou Lai Ma Motor Parts Co Ltd
Current assignee: Taizhou Lai Ma Motor Parts Co Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2018-07-24
Anticipated expiration: 2028-01-12

Abstract

The technical solution of the utility model is a kind of stator core holder, including main support body made of being stretched through raw material and secondary support body, the main support body includes main support face and outer circumference surface, the secondary support body includes secondary supporting surface and outer positioning region, the endoporus interference fit of both the main support body and secondary support body is mounted on sleeve outer surface, the main support face and secondary supporting surface are radially tilted to both sides from inside to outside, and the outer positioning region of the secondary support body is supported to be positioned at the outer circumference surface end head inner surface of main support body.The utility model good integral strength, integrally-built load-bearing property is greatly improved by optimizing structure on the basis of using same material, larger sized stator core can be installed and then more powerful motor can be born, reduce raw material, cost is saved, and the phenomenon that improving concentricity concentricity, having eliminated as much as swing.

Description

Stator core holder

Technical field

The present invention relates to a kind of motor components, more particularly, to a kind of stator core holder.

Background technology

With the continuous development of electric vehicle, electric vehicle is more and more universal as green traffic tool, flat by original city etc. Smooth road conditions area gradually to the complex road conditions such as the Duo Shan such as rural area, mountain area, more slopes area promote, be especially applied to rural area some In terms of agricultural loading traffic, there is problems with for some conventional electric cars in city in the past：Motor power is insufficient, climbing nothing Power, can not heavy duty, the problems such as structural strength is insufficient when overloaded, low heavy burden ability seriously hinders electric vehicle in rural area, mountain area It uses and popularizes.

And important component of the stator core holder of electric vehicle as a load-bearing, stator support is during the work time not only The continually changing torque of motor itself and electromagnetic force are born, still suffers from impact force when wheel hub is jolted, electric vehicle is certainly The gravity of body, the structural strength of its own is most important, and electric vehicle its stator core more than 300W power must be used at present Double bracket structure, holder are thickness 1.2mm with upper steel plate, this is to inherently a kind of waste of material so that manufacturing cost is high.

In addition, double bracket is riveted together for two holders bears suffered external force jointly, on holder outer peripheral surface It is inevitably present an angle R, as depicted in figs. 1 and 2, stator core is laminated by silicon steel sheet, and stator core was Cooperation of being full of is fitted on holder outer ring, and the out-of-flatness due to holder outer peripheral surface during press fitting can lead to stator core Outer surface can be offset inward, this will increase the air gap between stator and rotor so that air gap increases, and leakage field increases, and then leads No-load current is caused to increase, power output is reduced.In addition double bracket bounce and swing are all bad, because double bracket is welded after being pressed into iron core Connect, cause to deform in the welding process, in addition double bracket technique on concentricity influence it is also larger, while stator core holder and The concentricity of motor shaft is to be improved.

Invention content

In view of the above-mentioned problems, the present invention is intended to provide a kind of stator core holder, novelty simple in structure, strength and stiffness Good, thickness can accomplish 1mm, can be adapted for more powerful motor, avoid the defect at the angles double bracket structure R.

The technical scheme is that a kind of stator core holder, including main support body made of being stretched through raw material and Secondary support body, the main support body include main support face and outer circumference surface, and the secondary support body includes secondary supporting surface and outer positioning Both portion, the main support body and secondary support body endoporus interference fit be mounted on sleeve outer surface on, the main support face and Secondary supporting surface is radially tilted to both sides from inside to outside, and the outer positioning region of the secondary support body supports the excircle in main support body It is welded and fixed after being positioned at the end head inner surface of face.

Preferably, end on the inside of the main support face, on the inside of secondary supporting surface end in an axial direction outward after bending with axis Cover outer surface cooperation positioning.

Preferably, it is welded and fixed integrally after the axle sleeve and main support body, secondary support body interference fit, the axle sleeve Centre bore is process by the way that the outer circumference surface of main support body is clamped.

Preferably, the outer surface of the main support face and secondary supporting surface is avoided being disposed radially reinforcement at fabrication hole Spoke.

Preferably, it is provided with technique between each two adjacent reinforcement spoke on the main support face and secondary supporting surface Hole.

Preferably, the fabrication hole on the secondary support body is that punching wrap direction is formed, and both sides and three face of outside are washed open Mouthful, along inside bending, bending follower head leans against to be welded and fixed on axle sleeve to form reinforced support the material after opening.

Preferably, the outer circumference surface end point of the main support body forms step to radially bending.

Preferably, the outer positioning region end side bending axially outward of the secondary support body, main support is tightly attached to after bending At the outer circumference surface inner surface of body.

Preferably, the end after the outer positioning region bending aligns with the side after the bending of outer circumference surface end.

Preferably, the outer positioning region end side bending axially inward of the secondary support body, main support is tightly attached to after bending At the outer circumference surface inner surface of body.

Preferably, the outer positioning region and welding manner at outer circumference surface end head inner surface are spot welding or whole weldering It connects.

Preferably, it is provided with axial positioning rib on the outer circumference surface.

Whole knot is greatly improved by optimizing structure on the basis of using same material in good integral strength of the present invention The load-bearing property of structure can install larger sized stator core and then can bear more powerful motor, reduce former material Material, the phenomenon that having saved cost, and improved concentricity concentricity, eliminated as much as swing.

Description of the drawings

Fig. 1 is the structural schematic diagram of existing double bracket stator core；

Fig. 2 is the deformation occurred after existing stator core is mounted on double bracket；

Fig. 3 is the structural schematic diagram of the present invention；

Fig. 4 is the structural schematic diagram at another visual angle of the present invention；

Fig. 5 be the present invention along center split after structural schematic diagram；

Fig. 6 is the partial enlarged view at A in Fig. 5；

Fig. 7 is the partial enlarged view at B in Fig. 5；

Fig. 8 is the structural schematic diagram of preferred structure of the present invention；

Fig. 9 is the sectional view of Fig. 8；

Figure 10 is the partial enlarged view at C in Fig. 9；

Figure 11 is the partial enlarged view at D in Fig. 9；

Wherein：1-main support body；2-secondary support bodies；3-main support faces；4-outer circumference surfaces；5-secondary supporting surfaces；6— Outer positioning region；7-axle sleeves；8-fabrication holes；9-reinforce spoke；10-positioning bars；11-reinforced supports.

Specific implementation mode

Below in conjunction with the accompanying drawings, invention is further described in detail.

As shown in Fig. 3 to Fig. 7, the invention discloses a kind of stator core holders, including made of being stretched through raw material Main support body 1 and secondary support body 2, the main support body 1 include main support face 3 and outer circumference surface 4, and the secondary support body 2 includes The endoporus interference fit of both secondary supporting surface 5 and outer positioning region 6, the main support body 1 and secondary support body 2 is mounted on outside axle sleeve 7 On surface, the main support face 3 and secondary supporting surface 5 are radially tilted to both sides from inside to outside, the outer positioning of the secondary support body 2 Portion 6 is supported to be welded and fixed after positioning at the 4 end head inner surface of outer circumference surface of main support body 1, the main support face 3 and secondary branch The outer surface in support face 5, which has been disposed radially, reinforces spoke 9, to enhance the load-bearing capacity of holder, 3 He of the main support face Fabrication hole 8, the outer circumference surface 4 of the main support body 1 are provided between each two adjacent reinforcement spoke 9 on secondary supporting surface 5 End point to radially bending formed step, 6 end of the outer positioning region side bending axially outward of the secondary support body 2, It is tightly attached to after bending at 4 inner surface of outer circumference surface of main support body 1, in 3 inside end of the main support face, secondary supporting surface 5 Coordinate with 7 outer surface of axle sleeve after the outside bending in an axial direction of side head and positions, the axle sleeve 7 and main support body 1, secondary support body It is welded and fixed after 2 interference fits integrally, the outer positioning region 6 is point with welding manner at 4 end head inner surface of outer circumference surface Weldering or integral solder are provided with axial positioning rib 10 on the outer circumference surface 4, positioning, institute when install for stator core The centre bore for stating axle sleeve 7 is process by the way that the outer circumference surface 4 of main support body 1 is clamped, and can guarantee axle sleeve and stator core in this way The concentricity of holder avoids dancing occur between electric vehicle wheel rim and motor shaft.

Further, as shown in Figs. 8 to 11, the fabrication hole 8 on the secondary support body 2 is that punching wrap direction is formed, Mouth is washed in its both sides and three face of outside open, and along inside bending, bending follower head leans against to be welded and fixed the material after opening on axle sleeve 7 To form reinforced support 11, certainly, 6 end of outer positioning region in an axial direction can also bending inwardly, be tightly attached to main support after bending At 4 inner surface of outer circumference surface of body 1,6 end of outer positioning region axially inward or outward bending mode and reinforced support 11 setting is independent of each other, and the end after 6 bending of outer positioning region is opposite with the side after 4 end bending of outer circumference surface Together, the setting of reinforced support 11 further enhances the overall construction intensity of stator core holder.

The present invention is after installing stator core, during stator core pressing, since holder outer circumference surface is one Smooth arc surface, stator core not will produce deformation, avoid the defect at the angles double bracket R so that stator core after practical manufacture Air gap when meeting design to the air gap between magnetic links, while the present invention uses angle branch using main support body and secondary support body The mode of support effectively enhances the load-bearing capacity of stator core holder, can be suitable for more powerful motor, while can be with 1.2 wall thickness 1mm will be thinned to the stator core holder of wall thickness originally, raw material has been saved, for being a weight in industry Big technological improvement.For the welding deformation of double bracket before, holder of the invention is first welded is pressed into iron core again, in this way Avoid the deformation in welding process.

The above is only the better embodiment of the present invention, is not made any form of restriction to invention, while sheet Stator core holder in invention is applicable not only to electric vehicle industry, or is used for the wheel hub motor in other industry, all It is technical principle any simple modification, equivalent variations or modification made to the above embodiment according to the present invention, still falls within this In the range of inventive technique scheme.

Claims

1. a kind of stator core holder, it is characterised in that：Including main support body made of being stretched through raw material（1）And secondary support Body（2）, the main support body（1）Including main support face（3）And outer circumference surface（4）, the secondary support body（2）Including secondary supporting surface （5）With outer positioning region（6）, the main support body（1）With secondary support body（2）The endoporus interference fit of the two is mounted on axle sleeve（7） On outer surface, the main support face（3）With secondary supporting surface（5）It is radially tilted from inside to outside to both sides, the secondary support body（2） Outer positioning region（6）It supports in main support body（1）Outer circumference surface（4）It is welded and fixed after being positioned at end head inner surface.

2. stator core holder according to claim 1, it is characterised in that：The main support face（3）Inside end, secondary branch Support face（5）Inside end in an axial direction outward after bending with axle sleeve（7）Outer surface cooperation positioning.

3. stator core holder according to claim 2, it is characterised in that：The axle sleeve（7）With main support body（1）, it is secondary Stake body（2）Integral, the axle sleeve is welded and fixed after interference fit（7）Centre bore pass through be clamped main support body（1）It is outer Periphery（4）It is process.

4. stator core holder according to claim 1, it is characterised in that：The main support face（3）With secondary supporting surface（5） Outer surface at be disposed radially reinforcement spoke（9）.

5. stator core holder according to claim 4, it is characterised in that：The main support face（3）With secondary supporting surface（5） On each two adjacent reinforcement spoke（9）Between be provided with fabrication hole（8）.

6. stator core holder according to claim 5, it is characterised in that：The secondary support body（2）On fabrication hole（8） It is formed for punching wrap direction, mouth is washed in both sides and three face of outside open, and the material after opening is along inside bending, bending follower head Lean against axle sleeve（7）On be welded and fixed to form reinforced support（11）.

7. stator core holder according to claim 1, it is characterised in that：The main support body（1）Outer circumference surface（4） End point forms step to radially bending.

8. stator core holder according to claim 1 or claim 7, it is characterised in that：The secondary support body（2）Outer positioning region （6）End side bending axially outward, main support body is tightly attached to after bending（1）Outer circumference surface（4）At inner surface.

9. stator core holder according to claim 8, it is characterised in that：The outer positioning region（6）End after bending With outer circumference surface（4）Side after the bending of end aligns.

10. stator core holder according to claim 1 or claim 7, it is characterised in that：The secondary support body（2）Outer positioning Portion（6）End side bending axially inward, main support body is tightly attached to after bending（1）Outer circumference surface（4）At inner surface.

11. stator core holder according to claim 1, it is characterised in that：The outer positioning region（6）With outer circumference surface （4）Welding manner is spot welding or integral solder at end head inner surface.

12. stator core holder according to claim 1, it is characterised in that：The outer circumference surface（4）On be provided with axial direction Positioning bar（10）.