CN101855810A - Rotary electric machine for automobile - Google Patents
Rotary electric machine for automobile Download PDFInfo
- Publication number
- CN101855810A CN101855810A CN200880115703A CN200880115703A CN101855810A CN 101855810 A CN101855810 A CN 101855810A CN 200880115703 A CN200880115703 A CN 200880115703A CN 200880115703 A CN200880115703 A CN 200880115703A CN 101855810 A CN101855810 A CN 101855810A
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- CN
- China
- Prior art keywords
- notch
- conductive segment
- rotor
- interval
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0025—Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine ; Applying fastening means on winding heads
- H02K15/0031—Shaping or compacting conductors in slots or around salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a rotary electric machine, in particular a starter for an automobile, that comprises a stator, a rotor (2) arranged so as to be capable of rotation in the stator about a longitudinal axis, at least one winding (8) including conducting segments (11), and a plurality of notches (40) formed on one of the stator and the rotor (2), extending substantially along the longitudinal axis and each having a bottom (41), wherein one at least of said notches (40) receives at least one conducting segment of the winding (8). Said at least one conducting segment (11) bears against the notch bottom (41) and has a crush deformation that is sufficient for maintaining the same in the notch (40) during a nominal operation of the rotary electric machine.
Description
Technical field
The present invention relates to electric rotating machine, for example be used for the starter of motor vehicle, the invention still further relates to the method that is used for production the type motor.
Background technology
Patent application FR2708398, FR2721769 and FR2875068 have described the whole bag of tricks of the starter armature that is used to produce motor vehicle.These known methods are included in the step of line ball (crushing wire) in the notch of rotor, and/or extruding (crimp) rotor is to form the step of tooth.
All these methods also comprise the step with the lead dipping lacquer, to guarantee line fixing in notch by forming to adhere between these lines.
The rotor dipping lacquer may have some problems, particularly because necessary industrial equipment and relative long operating time.
In addition, lacquer can have the shortcoming of the heat exchange performance that reduces rotor.
There are the needs of eliminating aforesaid drawbacks.
Summary of the invention
Purpose of the present invention is a kind of electric rotating machine thus, and the starter especially for motor vehicle comprises:
-stator;
-rotor, it is set to and can rotates at the stator internal winding longitudinal axis;
-at least one winding comprises conductive segment;
-a plurality of notches, it is formed on in stator and the rotor one, its basically longitudinally axis extend, each notch all has the bottom, at least one of notch receives at least one conductive segment of winding;
It is characterized in that described at least one conductive segment is against the bottom of notch and supported, and have crimp, this this conductive segment of distortion sufficient to guarantee is maintained in the notch in the normal course of operation of electric rotating machine.
By the present invention, in the length of life of motor, conductive segment can remain in the respective slot, except their extruding without any need for additional means.
Especially, after rotor was assembled in the stator, motor can advantageously not have the lacquering thing that contacts with conductive segment in the notch.
The present invention can avoid the operation of rotor dipping lacquer thus, and it has simplified the production of rotor, and does not reduce the latter's heat exchange performance.
Especially, the energy that is used to produce rotor can be reduced, and it can reduce the CO of rotor
2Footprint, consistent with the concern of environment aspect.
According to an embodiment, at least one notch receives at least two conductive segments, and described conductive segment is particularly arranged along the radius of rotor basically.
For example, each notch can receive four conductive segments, and its radius along rotor is arranged.
As a kind of variation, at least two conductive segments in the single notch can be by basically along the circumferential arrangement of rotor.
Preferably, each conductive segment has a cross section, and it is along the circumference elongation of rotor, and this shape obtains during the extruding of conductive segment.
According to one embodiment of present invention, before deforming by extruding, each conductive segment can have circle or oval cross section.This circular cross section also is formed in the hair worn in a bun or coil shape portion of winding.
Winding is for example formed by one or more line.
As a kind of variation, before pushing, each conductive segment has the polygon cross section, and particularly rectangle or square cross section.
Conductive segment after extruding and the ratio between the thickness before the extruding be called as " press ratio " of this section.
Ratio between the thickness of conductive segment and its width is called as this section " shape ratio ".
At least one conductive segment in the notch, and all conductive segments particularly preferably have interval [0.6; 1] Nei press ratio is particularly interval [0.7; 0.9] in, and more especially interval [0.75; 0.85] in.
Preferably, at least one conductive segment in the notch, and all conductive segments particularly have interval [0.66; 1] Nei shape ratio is particularly interval [0.68; 0.84] in, and more especially interval [0.7; 0.75] in.
Especially, the shape ratio can be substantially equal to 0.71.
According to one embodiment of present invention, but each all comprises the longitudinal opening relative with the bottom notch, and at least one notch can be included in the notch free space that extends between the conductive segment of close opening and opening self, provides in the extrusion process of the conductive segment (one or more) of this free space in notch.
Preferably, the degree of depth of free space is at interval [0.1mm; 2mm] in.
If desired, the degree of depth of the free space of notch is substantially equal to zero.
Advantageously, at least one notch, particularly all notches have a filling rate, and it is defined as the ratio between the part that occupied by conductive segment in the notch and the notch part when empty, and this filling rate is interval [60%; 98%] in, especially interval [70%; 95%] in, and more particularly interval [75%; 92%] in.
According to one embodiment of present invention, notch can be formed on the main body, and particularly on rotor subject, and this main body can comprise at least one tooth, and this tooth is projected in one of them notch, and this tooth makes conductive segment is held in place in notch.
Especially, tooth can extend in the free space of notch at least in part.
Rotor subject can comprise longitudinal groove, and it extends above this tooth, this groove by initial setting up so that the distortion of rotor subject to form this tooth.
The bottom of each notch can have the cross section of spill, and its concave panel is to the inside of notch, this shape basically with the shape complementarity of conductive segment.
According to one embodiment of present invention, at least one notch can comprise two smooth basically relative vertical walls.
As a kind of variation, at least one notch can comprise two relative vertical walls, and these walls have recess shapes portion and protuberance shape portion, and it makes especially can improve the retentivity of conductive segment in notch.
Motor can comprise at least one insulating trip, and it is plugged between the wall of at least one conductive segment and notch.
Purpose of the present invention still is a kind of method that is used for Production Example as an aforementioned electric rotating machine, and this method comprises the steps:
A. in each notch, insert at least one conductive segment; With
B. apply extruding force on this conductive segment, this power is enough to for conductive segment provides distortion, and this distortion allows this conductive segment to be maintained in the notch in the normal course of operation of electric rotating machine.
This method also can comprise the steps:
C. push rotor subject partly, on this main body, to form one or more teeth that are projected in the notch.
If can use, step b and c can carry out simultaneously.
As a kind of variation, step b is prior to step c.
Extruding force can be along the length variations of at least one conductive segment.
Preferably, extruding force on the central area of conductive segment than big on the neighboring area at conductive segment.
Thus, the distortion of the central area of the conductive segment in the notch can be greater than the distortion of the neighboring area of conductive segment.
Description of drawings
By reading the following detailed description of non-limiting example of the present invention, and, can understand the present invention better by inspecting accompanying drawing, in the accompanying drawings:
-Fig. 1 schematically partly shows the electric rotating machine according to the embodiment of the invention;
-Fig. 2 schematically partly shows the rotor of the motor of Fig. 1 in independent mode;
-Fig. 3 schematically partly shows the rotor of Fig. 2 in according to the cross section of III;
-Fig. 4 schematically partly shows the conductive segment of motor before extruding of Fig. 1 in cross section;
-Fig. 5 schematically partly shows the rotor among Fig. 2 in according to the cross section of V-V;
-Fig. 6 schematically partly shows the rotor of motor according to another embodiment of the present invention in cross section;
-Fig. 7 schematically partly shows the rotor of motor according to still another embodiment of the invention in cross section; With
-Fig. 8 and 9 schematically partly shows the extruding drift according to two embodiment of the present invention.
Embodiment
Fig. 1 shows the electric rotating machine of the starter 1 that forms motor vehicle.
This starter 1 at first comprises rotor 2, and it is also referred to as armature, and it can be around longitudinal axis X rotation, and next comprises stator 3, and it is also referred to as inductor, around rotor 2.
Starter 1 has the electrical power of 1KW.
Starter 1 can be six magnetic poles (pole magnet) type for example.
As a kind of variation, stator can comprise that winding is to replace magnet.
Winding 8 comprises a plurality of leads, hair worn in a bun or coil shape portion 9 and back hair worn in a bun or coil shape portion 10 before it forms on the both sides of rotor subject 7.
At the rear portion, rotor 2 is provided with current-collector 12, comprises a plurality of contacts, and it is electrically connected to winding 8.
One group of brush 13 and 14 is set for the power supply of winding 8, and a brush 13 is connected to the ground wire of equipment 1, and another brush 14 is connected to the electric terminal 15 of contactor 17 by electric wire 16.Have for example four brushes.
When rotor 2 rotations, brush 13 and 14 rubs on current-collector 12.
Starter 1 also comprises starter (launcher) assembly 19, and it is installed as on driving shaft 18 and slides, and can rotate around axis X by rotor 2.
This shift fork 27 activates by contactor 17, along axis X actuator assembly 19 is shifted with respect to driving shaft 18 in known manner.
Except the terminal 15 that is connected to brush 14, contactor 17 comprises the terminal 29 that is connected to the power supply (particularly battery is not shown) of vehicle via electrical connecting element (particularly electric wire 30).
Referring now to Fig. 2 to 5 rotor 2 is described.
As shown in Figure 3, rotor subject 7 comprises a plurality of notches 40, and it extends along axis X, each notch 40 have 41, two the smooth basically relatively vertically walls 42 in bottom with 43 with the longitudinal opening 44 relative with bottom 41.
The bottom 41 of each notch 40 has concave shape in cross section, its concave panel is to the inside of notch 4.
Each notch 40 also comprises at least one insulating trip 34, and it is plugged between conductive segment 11 and wall 42 and 43, and described conductive segment is inserted in the notch 40.
This insulating trip 34 is at first along wall 42 and 43 and extend on bottom 41, secondly extends on the periphery 28 of the main body of rotor 7.
In described example, each notch 40 receives four conductive segments 11 of winding 8, and it lines up row along the radius of rotor 2 basically.
These conductive segments 11, it is formed by the part of the line with circular cross section at first, as shown in Figure 4, and is placed in the respective slot 40.
Then, by the instrument 50 that is provided with centre punch 51, conductive segment 11 is compressed in each notch 40, as shown in Figure 5.
The distortion that extruding force is selected as making respective slot 40 interior conductive segments 11 bear is enough in the normal course of operation of motor they are held in place.
In described example, laterally drift 52 is connected to centre punch 51.As a kind of variation, laterally drift 52 can be designed to and can slide with respect to centre punch 51.
These teeth 46 are guaranteed the maintenance of the enhancing of conductive segment 11 in respective slot 40.
For the ease of form tooth 46 by horizontal drift 52 during pushing, originally rotor subject 7 is provided with longitudinal groove 47, and it produces preferential deformed region.
These grooves 47 occur after extruding, and are positioned at the tight top of tooth 47.
Shown in Fig. 2 and 3, after rotor 2 had been assembled in stator 3, rotor 2 did not have any lacquering thing that contacts with conductive segment 11 in the notch 40.
This method does not need the conductive segment dipping lacquer.
Shown in Fig. 3 and 5, after extruding took place, each conductive segment 11 had a cross section, and it is along the circumference elongation of rotor 2.
" e " represents the thickness of the conductive segment 11 that axis Y radially measures, and the width of the conductive segment that " l " expression is measured along the axis Z perpendicular to axis Y, axis Y and Z are comprised on the plane perpendicular to axis X.
Shape (e/l) is defined as the thickness e of conductive segment 11 and the ratio between the width l than (form of ratio).
In described example, the conductive segment 11 that inserts notch 40 has and is substantially equal to 0.7 shape ratio.
As shown in Figure 4, before extruding took place, each conductive segment 11 had circular cross section, and its original depth is labeled as " e
0".
The thickness of conductive segment 11 after being extruded and its original depth e
0Between ratio defined the press ratio (e/e of this conductive segment 11
0).
In described example, the conductive segment 11 that inserts in the notch 40 has interval [0.75; 0.9] interior press ratio.
Each notch 40 comprises free space 45, and it extends between the conductive segment 11 of the most close notch 44 and opening 44 self, and this free space 45 has the degree of depth p that measures along axis Y.
Degree of depth p is selected as being substantially equal to 1.6mm.
The filling rate of each notch 40 is defined as the cross section (section) that occupied by conductive segment 11 in the notch 40 and the ratio between the cross section of notch 40 in sky, and the filling rate of each notch is in interval [65%, 80%].
In the example according to the embodiment of the invention, the rotor of motor has following feature:
The original depth e of-conductive segment
0=2mm;
Thickness e=the 1.57mm of-conductive segment after extruding takes place;
The width l=2.26mm of-conductive segment after extruding takes place;
-shape is than=0.69;
-press ratio=0.78;
The degree of depth=the 1.57mm of the free space of-notch;
-filling rate=76%.
Should be understood that and the invention is not restricted to previous embodiment.
For example, in the alternate embodiment according to rotor of the present invention, as shown in Figure 6, each free space 45a of rotor 2a has the very shallow degree of depth, is substantially equal to 0.4mm, and filling rate is interval [80%; 98%] in.
Also for example, Fig. 7 shows the alternate embodiment according to rotor of the present invention, and wherein this rotor 2b comprises notch 40b, and this notch comprises two relative vertical wall 42b and 43b, and these walls 42b and 43b have the shape portion for recess 48b and protuberance 49b.
These shape portions for recess 48b and protuberance 49b make and can receive conductive segment 11 that these conductive segments 11 have the retentivity of enhancing in notch 40b.
With reference in the example shown in Figure 5, the drift 51 that is used to push conductive segment 11 can have at least along the straight guide edge of the whole length of notch 40.
As a kind of variation, as shown in Figure 8, drift 51 can be included in the straight edge 511 that extends by recess 512 on the both sides.
These recess 512 have curved shape, and its concave panel is towards conductive segment 11.
When drift 51 extruding conductive segments 11, straight edge 511 is applied in the central area of conductive segment 11, and causes the extruding of this central area.
Simultaneously, recess 512 little by little acts on the neighboring area of conductive segment 11, and utilizes the power that reduces to push them.
The extruding force that changes applies by drift 51 thus.
In the embodiment of the invention shown in Figure 9, drift 51 comprises centre punch element 513 and two peripheral drift elements 514 on the centre punch elements on either side.
These drift elements 513 and 514 each all have straight edge, and independently of one another.
When of drift 51 extruding conductive segments 11, the guide edge of centre punch element 513 is at stroke c
2After be applied the central area of the conductive segment 11 in notch 40.
Claims (17)
1. an electric rotating machine (1), the starter especially for motor vehicle comprises:
-stator (3);
(2,2a), it is set to and can rotates around longitudinal axis (X) in stator (3)-rotor;
-at least one winding (8) comprises conductive segment (11);
-a plurality of notches (40), its be formed on stator (3) and rotor (2, on one in 2a), described notch basically longitudinally axis (X) extend, each notch all has bottom (41), and at least one of notch (40) receives at least one conductive segment (11) of winding;
It is characterized in that described at least one conductive segment (11) is against the bottom (41) of notch and supported, and have crimp, this this conductive segment of distortion sufficient to guarantee is maintained in the normal course of operation of electric rotating machine (1) in the notch (40).
2. the described motor of claim (1) as described above is characterized in that, rotor (2,2a) be assembled in the stator (3) after, motor does not have the lacquering thing that contacts with conductive segment (11) in the notch (40).
3. motor as claimed in claim 1 or 2 (1) is characterized in that, at least one notch (40) receives at least two conductive segments (11), and particularly (2, radius 2a) is lined up row to described conductive segment along rotor basically.
4. the described motor of each claim (1) as described above is characterized in that, each conductive segment (11) have along rotor (2, the cross section of circumference elongation 2a).
5. the described motor of each claim (1) as described above is characterized in that,
At least one conductive segment (11) in the notch (40), and particularly all conductive segments (11) have interval [0.6; 1] Nei press ratio is particularly interval [0.7; 0.9] in, and more especially interval [0.75; 0.85] in.
6. the described motor of each claim (1) as described above is characterized in that, at least one conductive segment (11) in the notch (40), and all conductive segments (11) particularly have interval [0.66; 1] Nei shape ratio is particularly interval [0.68; 0.84] in, and more especially interval [0.7; 0.75] in.
7. the described motor of each claim (1) as described above, each all comprises the longitudinal opening (44) relative with bottom (41) notch (40), it is characterized in that, at least one notch (40) comprises free space (45,45a, 45b), extend between the conductive segment (11) of close opening and the opening (44) self in notch (44) in described space.
8. the described motor of each claim (1) as described above is characterized in that, at least one notch (40), and particularly all notches (40) have a filling rate, and this filling rate is interval [60%; 98%] in, especially interval [70%; 95%] in, and more particularly interval [75%; 92%] in.
9. as claim 7 or 8 described motors (1), it is characterized in that, and free space (45,45a, degree of depth 45b) is substantially equal to zero.
10. the described motor of each claim (1) as described above is characterized in that notch (40) is formed on the main body (7), particularly at rotor subject (2,2a), and this main body (14) comprises at least one tooth (46), and this tooth is projected in one of them notch (40).
11. the described motor of each claim (1) is characterized in that as described above, main body (7) is included in the longitudinal groove (47) that extend tooth (46) top.
12. the described motor of each claim (1) is characterized in that as described above, at least one notch (40) comprises two smooth basically relative vertical walls (42,43).
13. each the described motor (1) as in the claim 1 to 11 is characterized in that, at least one notch (40) comprises two relative vertical walls, and (42b, 43b), these walls have recess (48b) shape portion and protuberance (49b) shape portion.
14. a method that is used to make electric rotating machine as claimed in claim 1 (1), this method comprises the steps:
A. in each notch (40), insert at least one conductive segment (11); With
B. apply extruding force on this conductive segment (11), to provide distortion to conductive segment, this distortion allows this conductive segment to be maintained in the normal course of operation of electric rotating machine (1) in the notch (40).
15., also comprise step as the described method of last claim:
C. push rotor subject (7) partly, form one or more teeth (46) that are projected in the notch (40) to go up, particularly by drift (52) extruding in this main body (7).
16., it is characterized in that step b and c carry out simultaneously as claim 14 and 15 described methods.
17. each the described method as in the claim 14 to 16 is characterized in that, extruding force is along the length variations of the conductive segment (11) in the notch (40).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0758998 | 2007-11-13 | ||
| FR0758998A FR2923662B1 (en) | 2007-11-13 | 2007-11-13 | ROTATING ELECTRIC MACHINE FOR MOTOR VEHICLE. |
| PCT/FR2008/052036 WO2009068814A1 (en) | 2007-11-13 | 2008-11-13 | Rotary electric machine for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101855810A true CN101855810A (en) | 2010-10-06 |
Family
ID=39555083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880115703A Pending CN101855810A (en) | 2007-11-13 | 2008-11-13 | Rotary electric machine for automobile |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101855810A (en) |
| BR (1) | BRPI0818263A8 (en) |
| FR (1) | FR2923662B1 (en) |
| WO (1) | WO2009068814A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782490A (en) * | 2011-11-21 | 2014-05-07 | 爱信艾达株式会社 | Conductive wire and electrical rotating machine |
| CN114050460A (en) * | 2022-01-12 | 2022-02-15 | 海门市正大电碳制品有限公司 | Carbon brush structure of fan motor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403850A (en) * | 2011-11-11 | 2012-04-04 | 陕西航空电气有限责任公司 | Method for sealing and fixing lead by motor rotor slot of direct-current pump |
| FR3023080B1 (en) * | 2014-06-30 | 2018-03-02 | Valeo Equipements Electriques Moteur | INDUCED ROTATING ELECTRIC MACHINE WITH OPTIMIZED NOTCH FILLING |
| DE102018104844A1 (en) * | 2018-03-02 | 2019-09-05 | Aumann Espelkamp Gmbh | Method and device for producing an arrangement for a coil with a distributed coil winding of an electrodynamic machine, arrangement and coil |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2708398B1 (en) * | 1993-07-26 | 1995-09-08 | Valeo Equip Electr Moteur | Method for crimping conductors in open slots of an armature of a rotating electrical machine, and electrical machine comprising an armature produced according to the method. |
| FR2721769B1 (en) * | 1994-06-22 | 1996-07-26 | Valeo Equip Electr Moteur | Method for crimping conductors in open slots of an armature of a rotating electric machine and electric machine, in particular a motor vehicle starter, comprising an armature according to the method. |
| IT1266896B1 (en) * | 1994-07-27 | 1997-01-21 | Magneti Marelli Spa | ROTOR OF AN ELECTRIC MACHINE, IN PARTICULAR OF AN ELECTRIC MOTOR FOR STARTING THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE AND |
| SE516002C2 (en) * | 2000-03-01 | 2001-11-05 | Abb Ab | Rotary electric machine and method of making a stator winding |
| DE102004032370A1 (en) * | 2004-06-30 | 2006-01-26 | Robert Bosch Gmbh | Electric machine and calibration method for a commutator rotor of the electric machine |
-
2007
- 2007-11-13 FR FR0758998A patent/FR2923662B1/en not_active Expired - Fee Related
-
2008
- 2008-11-13 BR BRPI0818263A patent/BRPI0818263A8/en not_active IP Right Cessation
- 2008-11-13 WO PCT/FR2008/052036 patent/WO2009068814A1/en active Application Filing
- 2008-11-13 CN CN200880115703A patent/CN101855810A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782490A (en) * | 2011-11-21 | 2014-05-07 | 爱信艾达株式会社 | Conductive wire and electrical rotating machine |
| CN103782490B (en) * | 2011-11-21 | 2016-08-17 | 爱信艾达株式会社 | Conductor lines and electric rotating machine |
| CN114050460A (en) * | 2022-01-12 | 2022-02-15 | 海门市正大电碳制品有限公司 | Carbon brush structure of fan motor |
| CN114050460B (en) * | 2022-01-12 | 2022-03-18 | 海门市正大电碳制品有限公司 | Carbon brush structure of fan motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009068814A1 (en) | 2009-06-04 |
| FR2923662A1 (en) | 2009-05-15 |
| BRPI0818263A2 (en) | 2018-12-11 |
| BRPI0818263A8 (en) | 2018-12-26 |
| FR2923662B1 (en) | 2010-02-19 |
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Application publication date: 20101006 |