CN202260067U - Commutator of hollow cup direct-current motor - Google Patents
Commutator of hollow cup direct-current motor Download PDFInfo
- Publication number
- CN202260067U CN202260067U CN2011203906471U CN201120390647U CN202260067U CN 202260067 U CN202260067 U CN 202260067U CN 2011203906471 U CN2011203906471 U CN 2011203906471U CN 201120390647 U CN201120390647 U CN 201120390647U CN 202260067 U CN202260067 U CN 202260067U
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- pole piece
- metal pole
- metal
- pole pieces
- plastic skeleton
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Abstract
The utility model relates to a commutator of a hollow cup direct-current motor, which comprises a metal shaft core, a plastic framework and at least three metal pole pieces. The commutator is fixed with the metal shaft core and the at least three metal pole pieces together through injection molding by the plastic framework, the plastic framework is provided with a cylinder end for installing the metal pole pieces, the at least three metal pole pieces are all uniformly distributed on the periphery of the cylinder end and are fixed on the plastic framework through injection molding, the end part of the cylinder end is provided with flanges which correspond to the metal pole pieces and extend in radial direction, one face of the flanges corresponding to the metal pole pieces is provided with a slot, the end part of the metal pole pieces is embedded in the slot to be fixed, and the axial end face of the metal pole pieces is covered by the flanges. With the adoption of the structure, the pole pieces can not be tilted and cracked during spot welding, the concentricity of the plastic framework and the shaft core is ensured, the deviation of roundness of the metal pole pieces is low, and the service life of the motor is greatly prolonged.
Description
Technical field
The utility model relates to a kind of structure of drag cup DC motor commutator, particularly a kind of drag cup DC motor commutator that has flange.
Background technology
At present the drag cup DC motor of different model is applied in the Different products, and the drag cup direct current machine is widely used in domestic electric appliance, toy and other a plurality of fields at present, and wherein commutator is that important assembly is as depicted in figs. 1 and 2; Existing commutator comprises metal shaft core 1, plastic skeleton 2 and at least three metal pole pieces 3, and said plastic skeleton is fixed together through injection moulding and metal shaft core, and plastic skeleton is provided with the cylindrical end that the metal pole piece is installed; Described at least three metal pole pieces are uniformly distributed with the circumference that is arranged on cylindrical end, are fixed on the plastic skeleton through injection moulding, for a long time the drag cup d.c. motor; Industry the cylindrical end head of general commutator all are arc convex surface; Because the pole piece of commutator is a sheet metal, when the welding stitch, pole piece is heated and is easy to generate the perk cracking; Cause the pole piece end to leave the cylindrical end of commutator; It is bad to produce concentricity and circularity, and it is short to cause material to be scrapped with useful life, influences the useful life of motor.
Summary of the invention
The deficiency that the utility model addresses the above problem provides a kind of drag cup DC motor commutator that has flange, and the metal pole piece was indeformable when this structure can make spot welding, guarantees concentricity and commutator segment circularity, improves motor life.
The technical scheme of the utility model is: comprise metal shaft core, plastic skeleton and at least three metal pole pieces; Said plastic skeleton is fixed together through injection moulding and metal shaft core; Plastic skeleton is provided with the cylindrical end that the metal pole piece is installed, and described at least three metal pole pieces are uniformly distributed with the circumference that is arranged on cylindrical end, are fixed on the plastic skeleton through injection moulding; The end of said plastic skeleton cylindrical end is provided with the flange that radially extend corresponding with the metal pole piece; The one side of the corresponding metal pole piece of said flange is provided with draw-in groove, and the end of metal pole piece is stuck in the draw-in groove fixing, and flange covers the axial end of metal pole piece.
Said metal pole piece is for bending to the pole piece of " L " type; The knee and the plastic skeleton injection moulding of " L " type pole piece are fixed; The cylindrical end of the installation metal pole piece of plastic skeleton is being pasted on one side of the pole piece of " L " type, the thimble through hole that is provided with on the corresponding plastic skeleton of the another side of " L " type pole piece.
Owing to adopted technique scheme to make the commutator of the utility model drag cup DC motor that following advantage arranged:
1. the end of the said cylindrical end of this drag cup DC motor commutator is provided with the flange that radially extend corresponding with the metal pole piece; The one side of the corresponding metal pole piece of said flange is provided with draw-in groove, and the end of metal pole piece is stuck in the draw-in groove fixing, and flange covers the axial end of metal pole piece; The flange draw-in groove can be fixed form of metal when metal deforms; It is stressed more even that flange all covers axially can letting of metal pole piece, can not cause pole piece end perk cracking so that the metal pole piece when the welding stitch is met, can not produce distortion because of being heated like this; Can be stable be fixed on the plastic skeleton can guarantee the concentricity of pole piece.
2. said metal pole piece is for bending to the pole piece of " L " type; The knee and the plastic skeleton injection moulding of " L " type pole piece are fixed; The cylindrical end of the installation metal pole piece of plastic skeleton is being pasted on one side of the pole piece of " L " type; The thimble through hole that is provided with on the corresponding plastic skeleton of the another side of " L " type pole piece; Can make metal pole piece and plastic skeleton keep more firm position, further guarantee the stability of metal pole piece and plastic skeleton in the welding stitch, guarantee pole piece and the concentricity of a core and the circularity of plastic skeleton.
The utility model is because above-mentioned advantage; Pole piece can not produce perk cracking when making spot welding, has guaranteed the whole concentricity of commutator, makes the roundness deviation of metal pole piece the end of than; Can let the scrappage of commutator material control to reduced levels, increase the useful life of motor greatly.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of existing commutator;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the structural representation of the utility model;
Fig. 4 is that the A of Fig. 3 is to view.
Wherein: 1 is the axle core, and 2 is plastic skeleton, and 3 is the metal pole piece, and 4 is flange, and 5 is the thimble through hole, and 6 is cylindrical end, and 7 is draw-in groove.
Embodiment
Referring to Fig. 3, Fig. 4, comprise metal shaft core 1, plastic skeleton 2 and at least three metal pole pieces 3, said plastic skeleton 2; Plastic skeleton is fixed together through injection moulding and metal shaft core, and plastic skeleton 2 is provided with the cylindrical end 6 that metal pole piece 3 is installed, and cylindrical end 6 is used for fixing the position of a core 2; The space that cylindrical end 6 is reserved when axle core 2 rotates can not be subjected to displacement when can make a core 2 rotate, and described at least three metal pole pieces 3 are uniformly distributed with the circumference that is arranged on cylindrical end 6, and present embodiment is five pole pieces 3 (referring to Fig. 4); Five pole pieces 3 are fixed on the plastic skeleton 2 through injection moulding respectively, make pole piece 3 and plastic skeleton 2 become one, and the end of said cylindrical end 6 is provided with the radially flange 4 of extension corresponding with metal pole piece 3; The one side of said flange 4 corresponding metal pole pieces 3 is provided with draw-in groove 7; The end of metal pole piece 3 is stuck in the draw-in groove 7 fixing, and sheet metal is heated in the spot welding stitch, metal heatedly perk will take place leaves; At this moment flange 4 and draw-in groove 7 just play the effect of a fixing metal pole piece 3; Make metal pole piece 3 that perk not take place and leave that flange 4 covers the axial end of metal pole piece 3 under the situation of being heated, can accept evenly in the fixing situation of pole piece 3; Said metal pole piece 3 is for bending to the pole piece of " L " type; The knee and plastic skeleton 2 injection mouldings of " L " type pole piece are fixed, and the knee of injection moulding metal pole piece 3 can let its stable pasting mutually with plastic skeleton 2, and " L " is one side the cylindrical end 6 of the installation metal pole piece 3 that is pasting plastic skeleton 2 of the pole piece of type; The thimble through hole 5 that is provided with on the corresponding plastic skeleton 2 of the another side of " L " type pole piece, the fabrication hole during for the commutator injection moulding.
The utility model not only is confined to the foregoing description, and said metal pole piece 3 also can be set to three or more, can be used for the structure of the utility model equally.
Claims (2)
1. the commutator of a drag cup DC motor; Comprise metal shaft core (1), plastic skeleton (2) and at least three metal pole pieces (3); Said plastic skeleton (2) is fixed together through injection moulding and metal shaft core (1); Plastic skeleton (2) is provided with the cylindrical end (6) that metal pole piece (3) is installed, and described at least three metal pole pieces (3) are uniformly distributed with the circumference that is arranged on cylindrical end (6), are fixed on the plastic skeleton (2) through injection moulding; It is characterized in that: the end of said cylindrical end (6) is provided with the flange (4) that radially extend corresponding with metal pole piece (3); The one side of the corresponding metal pole piece of said flange (4) (3) is provided with draw-in groove (7), and the end of metal pole piece (3) is stuck in the draw-in groove (7) fixing, and flange (4) covers the axial end of metal pole piece (3).
2. the commutator of drag cup DC motor according to claim 1; It is characterized in that: said metal pole piece (3) is for bending to the pole piece of " L " type; The knee of " L " type pole piece and plastic skeleton (2) injection moulding are fixed; The cylindrical end (6) of the installation metal pole piece (3) of plastic skeleton (2) is being pasted on one side of the pole piece of " L " type, and the corresponding plastic skeleton of the another side of " L " type pole piece (2) is gone up the thimble through hole (5) that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203906471U CN202260067U (en) | 2011-10-14 | 2011-10-14 | Commutator of hollow cup direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203906471U CN202260067U (en) | 2011-10-14 | 2011-10-14 | Commutator of hollow cup direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260067U true CN202260067U (en) | 2012-05-30 |
Family
ID=46121255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203906471U Expired - Fee Related CN202260067U (en) | 2011-10-14 | 2011-10-14 | Commutator of hollow cup direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202260067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429440A (en) * | 2019-08-20 | 2019-11-08 | 瑞安市成得电器有限公司 | Band reinforcing ring commutator |
-
2011
- 2011-10-14 CN CN2011203906471U patent/CN202260067U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429440A (en) * | 2019-08-20 | 2019-11-08 | 瑞安市成得电器有限公司 | Band reinforcing ring commutator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20171014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |