CN101378211A - Rotary motor and method for manufacturing electric brush thereof - Google Patents
Rotary motor and method for manufacturing electric brush thereof Download PDFInfo
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- CN101378211A CN101378211A CNA2008100960481A CN200810096048A CN101378211A CN 101378211 A CN101378211 A CN 101378211A CN A2008100960481 A CNA2008100960481 A CN A2008100960481A CN 200810096048 A CN200810096048 A CN 200810096048A CN 101378211 A CN101378211 A CN 101378211A
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- brush
- commutator
- curved surface
- outer peripheral
- sliding surface
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 52
- 229910052751 metal Inorganic materials 0.000 claims description 52
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- 238000000748 compression moulding Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 210000002615 epidermis Anatomy 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 229910001651 emery Inorganic materials 0.000 description 10
- 238000004904 shortening Methods 0.000 description 5
- 230000001815 facial effect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention discloses a rotating electric machine and manufacturing method of the electrical brush of the rotating electric machine, which provides a low-cost electrical brush capable of compromising the long life of the electrical brush and shorting the running handling time or having no need of running and processing the two aspects. The rotating electric machine has a glide plane (14) formed on one end of the brush (4) along the concave curved face of the external circumstance surface of a commutator (11); and a removing section(15), formed in a concave curved face in the axial direction, gradually left from the external circumstance surface of the commutator (11) to the other axial direction end of the brush (4) from the glide plane (14), and simultaneously formed a smooth surface without concave-convex in then radial direction at the rotation direction side of the commutator (11). In addition, the method includes a process of continuously performing cutting process to the rotation direction side of the commutator (11) to form a removing section(15).
Description
Technical field
The present invention relates to have the manufacture method of the electric rotating machine and the brush thereof of brush.
Background technology
As about the manufacture method relevant method of brush with the electric rotating machine in the past and the brush thereof of the low noiseization of the slip sound of commutator (commutator), having a kind of is internal diameter side at brush, has the sliding surface that forms along the concavity curved surface of the outer peripheral face of commutator; And this sliding surface leaves such inclined plane that tilts from the outer peripheral face of commutator, in such brush, this inclined plane formed the concavity curved surface consistent with the curved surface of sliding surface, the motor reel that makes sliding surface to the slip width keep certain in fact.And having a kind of is the curvature formation of concavity curved surface to equate of concavity curved surface with the aforementioned sliding surface on aforementioned inclined plane.
In addition, having a kind of is to make the commutator rotation after the electric rotating machine assembling, wearing and tearing slightly, make the sliding surface of brush carry out break-in along the outer peripheral face of commutator, for the sliding mode of brush and commutator is stablized, the processing (cooperation) of turning round tries hard to just realize the low noiseization of the slip sound of electric rotating machine after assembling just.
[patent documentation 1] spy opens 2003-259607 communique (paragraph [0004], Fig. 4)
[patent documentation 2] spy opens 2005-102412 communique (paragraph [0002])
Method in the past is that the axial end at brush is provided with sliding surface, try hard to realize the low noiseization of slip sound, but inclined plane for the axial setting of this brush, because to axial linearly being formed slopely, make sliding surface leave from the outer peripheral face of commutator gradually vertically, therefore under the situation of the little brush of the angle that tilts, in other words, at the outer peripheral face of inclined plane and commutator near under the parallel situation, volume increase because of the corresponding brush that tilts less, though can there be the long life-span in the life-span for wearing and tearing of this brush, but in the electric rotating machine that this brush is installed, the problem that exists is that must append turns round handles, and perhaps needs the long time for the running processing.
On the other hand, under the situation of the big brush of the angle that tilts, in other words, leave at outer peripheral face under the situation on bigger such inclined plane from commutator, volume minimizing because of many corresponding brushes that tilt, though in the electric rotating machine that this brush is installed, can not need to append running handles, perhaps handle the enough relatively shorter time of energy for running, but the problem that exists is, the life-span for wearing and tearing of this brush becomes the relatively short life-span, can not take into account the wear-out life that improves brush, with shorten the running processing time or do not need running to handle this two aspect.
In addition, method in the past is such formation, promptly, formation is left linearly like that vertically inclination and the inclined plane that is provided with vertically gradually from the outer peripheral face of commutator, at the direction of rotation side of the commutator concavity curved surface consistent with the curved surface of sliding surface, because the inclined plane has the concavity curved surface of the center of direction of rotation side towards the radial outside depression at the face relative with commutator (internal diameter side), therefore the problem that exists is, a plurality of brushes for the overlapping setting in inclined plane that will have such concavity curved surface, being difficult to carry out cut continuously towards the direction of rotation side of commutator forms, become to be that emery wheel and per 1 brush that the center rotates compresses with the rotating shaft of electric rotating machine or with the parallel in fact axle in inclined plane, this concavity curved surface is carried out cut etc., when forming the inclined plane, need long process time etc., in order to obtain the brush of above-mentioned shape in the past, just form somewhat expensive brush.
The present invention proposes in order to solve problem as described above just, and its purpose is to obtain having the long-life that can take into account brush life and shortens the running processing time or the electric rotating machine of brush this two aspect of processing that do not need to turn round, the while cheapness and the manufacture method of brush thereof.
Summary of the invention
In the relevant electric rotating machine of the present invention, have brush, this brush has: the sliding surface that forms with the concavity curved surface along the outer peripheral face of commutator at the axial end of brush; And the axial other end from this sliding surface towards this brush leaves like that for the portion of removing that axially forms with the concavity curved surface gradually from the outer peripheral face of aforementioned commutator, and radially do not having concavo-convex even surface with direction of rotation side, forming this and remove portion for aforementioned commutator.
In the manufacture method of the brush of the relevant electric rotating machine of the present invention, brush has: the sliding surface that forms with the concavity curved surface along the outer peripheral face of commutator at the axial end of brush; And the axial other end from this sliding surface towards this brush from the outer peripheral face of aforementioned commutator leave gradually for axially form with the concavity curved surface, simultaneously with for the direction of rotation side of aforementioned commutator in the portion of removing that does not radially have concavo-convex even surface to form, the manufacture method of aforementioned brush has following operation: the operation of the material powder of filling in the forming metal mould of this brush being carried out compression molding; The operation that the brush of compression molding is burnt till; And a plurality of aforementioned brush after burning till carried out cut continuously towards the direction of rotation side of aforementioned commutator, to form aforementioned operation of removing portion.
According to the present invention, can access to have the long-life that to take into account brush life and shorten and turn round the processing time or do not need the turn round electric rotating machine of brush this two aspect of processing, the while cheapness and the manufacture method of brush thereof.
Description of drawings
Fig. 1 is the cutaway view of the motor of the invention process form 1.
Fig. 2 is the key diagram of shape of the brush of the invention process form 1.
The key diagram that Fig. 3 compares for the inclined plane with the portion of removing of the brush of the invention process form 1 and in the past brush.
Fig. 4 is the key diagram of the portion's of removing formation of the brush of the invention process form 1.
Fig. 5 is the front view of the brush of the invention process form 2.
Fig. 6 is the front view of the brush of the invention process form 3.
[label declaration]
1 motor, 4 brushes, 11 commutators, 14 sliding surfaces, 15 remove portion, 16 pigtails, 17 chamfered section.
Embodiment
Example 1
According to Fig. 1～Fig. 4, example 1 is described.In addition, in each figure, describe for same or the additional same label of considerable part.The cutaway view of the motor that Fig. 1 uses for driven steering device, Fig. 2 are the key diagram of brush shape of the motor of Fig. 1, the key diagram that Fig. 3 compares for the inclined plane with the portion of removing of the brush of Fig. 2 and in the past brush.Fig. 4 is the key diagram of the portion's of removing formation of the brush of Fig. 2.
In Fig. 1, the motor 1 that the driven steering device of formation electric rotating machine is used has: the yoke that the round-ended cylinder shape is arranged 2 that forms stator; Formation is configured in the armature 3 of rotor of the inboard of yoke 2; Brush 4 to armature 3 power supplies; With the peristome of yoke 2 chimeric and with yoke 2 fixed end caps 5; And be fixed on the end of rotating shaft 6 of armature 3 and the propeller boss 7 that is connected with the turn side of vehicle.At the inner peripheral surface of yoke 2, each 2 magnetic pole 8 that constitute by permanent magnet of fix N S, in the inboard of magnetic pole 8 across air gap configuration armature 3.Rotating shaft 6 utilizes bearing 9 and 10 to support, can rotate freely.Brush 4 slides with the outer peripheral face that is fixed on the commutator cylindraceous 11 in the rotating shaft 6, to armature winding 12 power supplies that are connected with commutator 11.
Fig. 2 is the key diagram of the shape of brush 4, Fig. 2 (a) is the side view from the commutator side, Fig. 2 (b) for from the axial end of the axial end opposition side of sliding surface 14 1 sides, promptly from the side view of armature side Fig. 2 (a), Fig. 2 (c) is the figure same with the brush 4 shown in Fig. 1, is the front view of expression from the end face of the direction of rotation side of the brush 4 of the direction of rotation side of commutator 11.In addition, about the about direction of the paper of the brush of Fig. 1 and Fig. 2 (c), be called the direction of rotation side of commutator.In addition, about from the sliding surface side of the brush of cuboid in fact, to the direction of the end face of a relative side with it, be called radially.
The axial other end (pigtail 16 1 sides) at brush 4, have: with form and leave the chamfered section 17 that forming metal mould such, that utilize this brush 4 forms gradually for axial axially linking to each other by the portion of removing 15 that forms for axial concavity curved surface from the outer peripheral face of commutator 11, distolateral from a distolateral sliding surface 14 towards axial another, then remove portion 15 and link to each other with chamfered section 17, these parts all are to leave like that gradually towards another axial distolateral outer peripheral face from commutator 11 to constitute.
In addition, as shown in Figure 2, the corner portion of extending vertically in the both ends of the surface of the direction of rotation side of the corner portion of radially extending of the both ends of the surface of the axial side of brush 4 and sliding surface 14, have the chamfering about 0.5 (mm)～1 (mm) that the forming metal mould that utilizes this brush 4 forms, this chamfering is for the corner portion damage that prevents brush 4 and be provided with.This chamfering utilizes forming metal mould to form with cheapness.
The radius of the concavity curved surface of sliding surface 14 forms more bigger than the radius of the outer peripheral face of commutator 11.For example, because the radius of the concavity curved surface of sliding surface 14 forms with 12.5 (mm), the radius of the outer peripheral face of commutator 11 forms with 12.3 (mm), therefore at assembling initial stage of motor 1, slide with the outer peripheral face of commutator 11 at first near the centre of the direction of rotation side of sliding surface 14, near along commutator 11 this centre outer peripheral face weares and teares in advance, can reduce slip sound in advance, can not need running to handle or the shortening running processing time.In addition, at the assembling initial stage of motor 1,, therefore can reduce slip sound owing to sinking of being provided with between the adjacent commutator segment of the outer peripheral face of commutator 11, do not interfere with near the corner portion etc. the both ends of the surface of the direction of rotation side of sliding surface 14.In addition, because the radius of the concavity curved surface of sliding surface 14 is got over the radius greater than the outer peripheral face of commutator 11, then near aforementioned centre, become thin-line-shaped the slip more, therefore the area that slides reduces more, because of the heating of the brush 4 that causes of electric current of energising increases more, so the radius of the concavity curved surface of sliding surface 14 wishes to form greater than the radius of the outer peripheral face of commutator 11 in fact below 10%, preferably form greater than in fact about 5%.
Fig. 3 for the brush 4 of Fig. 2 for the portion of removing 15 that axially forms, compare and illustrate the key diagram of usefulness with the inclined plane for axially forming of in the past brush with linearity with the concavity curved surface.
Remove portion 15 formation that links to each other with the part of the sliding surface 14 that forms at an axial end, direction towards the axial other end, increasing (leaving gradually) such curved surface gradually with the gap size radially with the outer peripheral face of commutator 11 forms, and, because this curved surface is for axially being the concavity curved surface, therefore can be near sliding surface 14, leave more sharp from the outer peripheral face of commutator 11, but near the axial other end of brush 4, leave more lentamente, can take into account the long-life of brush life, with the shortening running processing time or this two aspect of processing that do not need to turn round, can make the wearing and tearing of sliding surface 14 along with brush 4, and slide successively from an axial end towards the other end, can reduce the noise of slip sound.
In addition, aforementioned curved surface is when axially being convex curved surface, the problem that produces is, must be as the angle of the inclination that illustrates below the situation of little inclined plane 18a, appending running handles, perhaps handling for running needs the long time, and, can not form this convex curved surface etc. with common circular grinding wheel.
Different therewith is that the inclined plane 18a of brush in the past and 18b are for axially forming linearity.Under the situation of the little inclined plane 18a of the angle that tilts, in other words, under inclined plane 18a and the parallel in fact situation of the outer peripheral face of commutator 11, because can the corresponding volume that relatively increases brush for wear of brush because of tilting less, though therefore the wear-out life for brush can have the long life-span, but in the running of the electric rotating machine that this brush is installed is handled, must append the running processing because of volume increases, perhaps handling for running needs the long time.
On the other hand, under the situation of the big inclined plane 18b of the angle that tilts, in other words, leave under bigger such situation from the outer peripheral face of commutator 11 at inclined plane 18b, owing to relatively reduce because of the volume of many brushes for wear of brush that tilt is corresponding,, can not need running to handle though therefore handle for the running of electric rotating machine, perhaps handle the enough relatively shorter time of energy, but the wear-out life of brush becomes the relatively shorter life-span for running.
Though remove portion 15 and inclined plane 18a and 18b all sliding surface 14 distolaterally constitute from axial one along with wearing and tearing towards another distolateral slip successively, inclined plane 18a in the past and 18b can not take into account brush life long-life, with shorten the running processing time or do not need this two aspect of running processing.
Fig. 4 is the key diagram of the formation of the portion of removing 15 of the brush 4 of key diagram 2.Brush body after burning till forms the shape of the clout portion 19 that represents with chain-dotted line with Fig. 4.This be because, carrying out under the situation of compression molding with the shape that does not have clout portion 19, push in A direction (direction of pigtail 16) along Fig. 2 (c), during from forming metal mould taking-up brush 4, outstanding sliding surface 14 produces with forming metal mould interferes, be not easy to take out brush 4, push and can carry out compression molding to be provided with just, and form the brush body from the shape that forming metal mould takes out the such clout portion 19 of brush 4 along the A direction from forming metal mould.
With the brush body after burning till, dispose as shown in Figure 4 with the emery wheel 20 that utilizes cut (attrition process) to form to remove portion's 15 usefulness, remove deflashing portion 19, form and remove portion 15, can access brush 4.Emery wheel 20 will be vertical with the axle center of the rotating shaft 6 of motor 1 axle as the center, along the C direction rotation of Fig. 4, aforementioned axis is partial to another distolateral (pigtail 16 1 sides) configuration for the axial center of brush.Emery wheel 20 is towards the paper of Fig. 4 shape of the dimension of the circle in fact shape that comes to a point of direction inwards, make towards the paper of Fig. 4 inwards the overlapping a plurality of configurations of direction the brush body from the paper of Fig. 4 inwards direction towards outward direction, with respect to emery wheel 20 relatively move (slip), these a plurality of brush bodies are carried out cut continuously in the direction of rotation side (the about direction of the paper of Fig. 4) of commutator 11, by the largest portion corresponding concavity curved surface of such formation for the diameter of axial and emery wheel 20, can form the brush 4 with the portion of removing 15 that forms even surface continuously, this even surface is at right angles to form along the about direction of the paper of Fig. 4 for the direction of rotation side, radially there be not concavo-convex even surface.
Because be that circle is tieed up the emery wheel 20 of shape in fact, so can increase machining area gradually, processability is good, and can process a plurality of continuously.
Since be for the direction of rotation side of brush 4 end face, form the portion of removing 15 at right angle in the direction of rotation side, therefore removing portion 15 is symmetrical for the direction of rotation of commutator 11, be not easy to produce difference, can form the electric rotating machine of the motor 1 of the driven steering device that is suitable for two-way rotation for the slip sound of different rotary direction.
In Fig. 4, one distolateral (sliding surface 14 1 sides) of removing portion 15 and another distolateral (pigtail 16 1 sides) about radially difference of height size S, the radial dimension H with respect to brush 4 forms below 20%.For example, be 10 (mm) from sliding surface 14 to the radial dimension H the end face radially relative with it, sliding surface 14 is 1.7 (mm) with another the distolateral difference of height size S radially that removes portion 15, difference of height size S is 17% with respect to radial dimension H.
If difference of height size S increases, then machining area increases, simultaneously if the ratio (S/H) of S and H increases, then brush 4 is fixing insufficient, be difficult to form continuously the portion 15 of removing, the price of brush 4 rises, and brush life also shortens simultaneously, owing to produce above-mentioned problem, so the important point is that difference of height size S will form below 20% with respect to radial dimension H.In addition, preferably difference of height size S forms below 2 (mm).
Below, the action of the example 1 that constitutes like this is described.Have: according to signals such as the signal that turns to torque sensor of the turn side that is arranged on vehicle and the speed of a motor vehicle, the control device of the motor 1 that the control driven steering device is used, by 16 pairs of brushes of lead-in wire 27 pigtails that are connected, 4 power supplies that link to each other with this control device, switch on to armature winding 12 from the commutator 11 that brush 4 slides.The armature 3 that utilization is switched on and the electromagnetic action of magnetic pole 8, rotating shaft 6 rotations, its revolving force to the turn side transmission, is assisted the steering force to the deflecting roller of vehicle by propeller boss 7, can alleviate driver's steering force.
Driven steering device is because its energy saving, just gradually also with the big vehicle of air displacement, motor 1 required the slip sound etc. of brush realize low noise, small-sized and cheapness etc.
As mentioned above, in example 1,, have: the sliding surface 14 that forms with concavity curved surface at the axial end of brush 4 along the outer peripheral face of commutator 11 because brush 4 is in the side of its commutator side; And from sliding surface 14 towards brush 4 the axial other end, from the outer peripheral face of commutator 11 leave gradually for the portion of removing 15 that axially forms with the concavity curved surface, therefore can access the long-life that to take into account brush life, handle the electric rotating machine of this two aspect with shortening the running processing time or do not need to turn round, simultaneously since be the portion of removing 15 with for the direction of rotation side of commutator 11 at the brush 4 that does not radially have concavo-convex even surface to form, therefore can cheaply form and remove portion, can access electric rotating machine with cheap brush.
Because brush 4 has: from the pigtail 16 of drawing with the axial end of the axial end opposition side of sliding surface 14 1 sides; Utilize the sliding surface 14 of the forming metal mould formation of brush 4 along the concavity curved surface of the outer peripheral face of commutator 11; And utilize cut to form the portion of removing 15 for axial concavity curved surface, therefore can utilize that forming metal mould is cheap to be formed along the concavity curved surface of the outer peripheral face of commutator 11 etc., can utilize that cut is cheap to be formed for axial concavity curved surface etc., can access electric rotating machine with cheap brush 4.
Because the axial other end at brush 4, have: with by the portion of removing 15 that forms for axial concavity curved surface axially link to each other forms, from the outer peripheral face of commutator 11 for the chamfered section 17 of axially leaving gradually and utilizing the forming metal mould of this brush 4 to form, so can utilize forming metal mould cheapness formation chamfered section 17.Owing to be the chamfered section of leaving gradually for axially 17, therefore can make the wearing and tearing of sliding surface 14, and slide successively to the other end from an axial end along with brush 4, can make slip sound stable, realize low noise.When the upper limit of the diameter dimension of the emery wheel 20 that the portion of removing 15 is carried out attrition process etc. is restricted, by chamfered section 17 is set, also can enough aforementioned emery wheels 20 forms and remove portion 15, can try hard to use the processing unit (plant) of the portion of removing 15 etc., obtain cheap brush 4.
Because the radius of the concavity curved surface of sliding surface 14, form more biggerly than the radius of the outer peripheral face of commutator 11, therefore can reduce slip sound in advance, can not need running to handle or shorten the running processing time.
Owing to remove distolateral and another distolateral difference of height size S radially of portion 15, form below 20% with respect to the radial dimension H of brush, therefore can access cheap brush 4, also can form the long life-span for brush life simultaneously.
Because the manufacture method of the brush 4 of example 1 has following operation: the operation of the material powder of filling in the forming metal mould of brush 4 being carried out compression molding; The operation that the brush of compression molding is burnt till; And a plurality of brushes 4 after burning till are carried out cut continuously, remove the operation of portion 15 with formation towards the direction of rotation side of commutator 11, therefore can access the manufacture method of cheap brush.
Example 2
According to Fig. 5, example 2 is described.In addition, for or considerable part additional same label identical, and omit explanation with example 1.Fig. 5 is the figure that is equivalent to Fig. 2 (c), is the front view of expression from the end face of the direction of rotation side of the brush 4 of the direction of rotation side of commutator 11.
Imbed pigtail 16 in this material powder for the material powder of filling in the forming metal mould and end thereof,, carry out compression molding, form one in the about direction pressurization of the paper of Fig. 5.After compression molding, direction is pushed to the outside from the paper of Fig. 5 the inside, takes out the brush body from forming metal mould, and it is burnt till, and forms the brush body.In this example, utilize forming metal mould to form and remove portion 15, but utilize cut to form the facial concavity curved surface that slides.Chamfered section 17 utilizes forming metal mould to form.
Because sliding surface 14 is to form with the concavity curved surface along the outer peripheral face of commutator 11, therefore when forming sliding surface 14 with forming metal mould, when the concavity curved surface that caves in towards the inside (radial outside) of brush 4 takes out after compression molding, produce interference with forming metal mould, be not easy to take out from forming metal mould, so in the direction of rotation of this concavity curved surface not (the about direction of the paper of Fig. 5) side with level and smooth face compression molding, after burning till, utilize cut to remove to be equivalent to the epidermis of the slip face of the position that utilizes the sliding surface 14 that forming metal mould forms, form the sliding surface 14 that forms by concavity curved surface along the outer peripheral face of commutator 11.
When compression molding, owing to utilize the wall expanded material powder of forming metal mould, make its densification, surface of the electric brush is relatively hardened, though therefore electric rotating machine increases at the slip sound of start of run, but owing to utilize cut to remove to slide facial epidermis, therefore can access and have that hardness is lower, the sliding surface 14 of the also more uniform concavity curved surface of material structure, can reduce slip sound in advance.
As mentioned above, in example 2, because brush 4 has: the pigtail 16 of drawing from the end face of the direction of rotation side of commutator 11; Utilize the sliding surface 14 of cut formation along the concavity curved surface of the outer peripheral face of commutator 11; And the forming metal mould that utilizes this brush 4 forms the portion of removing 15 for axial concavity curved surface, therefore can reduce slip sound in advance, can utilize that forming metal mould is cheap to be formed for axial concavity curved surface etc. simultaneously, can access cheap electric rotating machine.
Owing to sliding surface 14 is to utilize cut to remove to utilize the epidermis of the slip face of forming metal mould formation to form, therefore sliding surface 14 weares and teares along the outer peripheral face of commutator 11 in advance, can reduce slip sound in advance, can not need running to handle or the shortening running processing time.
Example 3
According to Fig. 6, example 3 is described.In addition, for example 1 or the example 2 identical or additional same labels of considerable part, and omit explanation.Fig. 5 is the figure that is equivalent to Fig. 2 (c) and Fig. 5, is the front view of expression from the end face of the direction of rotation side of the brush 4 of the direction of rotation side of commutator 11.
In addition, sliding surface 14 and to remove the shape of portion 15 identical with example 1 or example 2.
Since for the outstanding sliding surface 14 of the portion of removing 15 in pigtail 16 1 sides, the paper right side from Fig. 6 after the compression molding is pushed and is taken out left side direction (pigtail 16 1 sides), therefore sliding surface 14 does not produce interference with forming metal mould, can take out brush 4, therefore can utilize forming metal mould formation sliding surface 14 and remove portion 15.
In addition, in this example, though can utilize forming metal mould to form sliding surface 14, but also can utilize forming metal mould to form the slip face that the concavity curved surface of sliding surface 14 is appended the such concavity curved surface of machining area, after burning till, the aforementioned facial epidermis that slides that utilizes cut to remove to utilize forming metal mould to form forms the concavity curved surface of the sliding surface 14 of brush 4.In this case, identical with example 2, sliding surface 14 can not need running to handle or the shortening running processing time in advance along commutator 11 wearing and tearing.
As mentioned above, in example 3, because brush 4 has: the pigtail 16 of drawing from the axial end of sliding surface 14 1 sides; Utilize the sliding surface 14 of the forming metal mould formation of this brush 4 along the concavity curved surface of the outer peripheral face of commutator 11; And utilize aforementioned forming metal mould to form the portion of removing 15 for axial concavity curved surface, so sliding surface 14 and remove portion 15 and all utilize forming metal mould to form, can access cheap brush 4.
In addition, in above example, be that motor 1 with driven steering device describes as electric rotating machine, but electric rotating machine is not limited to this certainly.
Claims (9)
1. electric rotating machine, have in the rotating shaft of being fixed on commutator cylindraceous and with the brush that the outer peripheral face of this commutator slides, it is characterized in that,
Described brush has in the side of described commutator side:
The sliding surface that forms with concavity curved surface at the axial end of this brush along the outer peripheral face of described commutator; And
The axial other end from this sliding surface towards described brush from the outer peripheral face of described commutator leave gradually for the portion of removing that axially forms with the concavity curved surface,
And radially do not having concavo-convex even surface with direction of rotation side, forming this and remove portion for described commutator.
2. electric rotating machine as claimed in claim 1 is characterized in that,
Brush has:
From the pigtail of drawing with the axial end of the axial end opposition side of sliding surface one side;
Utilize the forming metal mould of this brush, formation is along the sliding surface of the concavity curved surface of the outer peripheral face of commutator; And
Utilize cut, form the portion of removing for axial concavity curved surface.
3. electric rotating machine as claimed in claim 1 is characterized in that,
Brush has:
The pigtail of drawing from the end face of the direction of rotation side of commutator;
Utilize cut, formation is along the sliding surface of the concavity curved surface of the outer peripheral face of described commutator; And
Utilize the forming metal mould of this brush, form the portion of removing for axial concavity curved surface.
4. electric rotating machine as claimed in claim 1 is characterized in that,
Brush has:
The pigtail of drawing from the axial end of sliding surface one side;
Utilize the forming metal mould of this brush, formation is along the sliding surface of the concavity curved surface of the outer peripheral face of commutator; And
Utilize aforementioned forming metal mould, form the portion of removing for axial concavity curved surface.
5. as claim 2 or the described electric rotating machine of claim 4, it is characterized in that,
Utilize cut to remove to utilize the epidermis of the slip face that the forming metal mould of this brush forms, form the concavity curved surface of the sliding surface of brush.
6. as each described electric rotating machine of claim 1 to 5, it is characterized in that,
The axial other end at brush has:
With by the portion of removing that forms for axial concavity curved surface axially link to each other form and from the outer peripheral face of commutator for the axial chamfered section of leaving gradually and utilizing the forming metal mould of this brush to form.
7. as each described electric rotating machine of claim 1 to 6, it is characterized in that,
The radius of the concavity curved surface of sliding surface forms more bigger than the radius of the outer peripheral face of commutator.
8. as each described electric rotating machine of claim 1 to 7, it is characterized in that,
Remove distolateral and another distolateral difference of height size radially of portion, form below 20% with respect to the radial dimension of brush.
9. the manufacture method of the brush of an electric rotating machine, be the brush that the outer peripheral face with the commutator cylindraceous of electric rotating machine slides, described brush has in the side of described commutator side: the sliding surface that forms with the concavity curved surface along the outer peripheral face of described commutator at the axial end of this brush; And the axial other end from this sliding surface towards this brush from the outer peripheral face of described commutator leave gradually for axially form with the concavity curved surface, simultaneously with for the direction of rotation side of described commutator in the portion of removing that does not radially have concavo-convex even surface to form, it is characterized in that having following operation:
The material powder of filling in the forming metal mould of this brush is carried out the operation of compression molding;
The operation that the brush of compression molding is burnt till; And
A plurality of described brush after burning till is carried out cut continuously towards the direction of rotation side of described commutator, to form described operation of removing portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007219645 | 2007-08-27 | ||
| JP2007-219645 | 2007-08-27 | ||
| JP2007219645A JP4496415B2 (en) | 2007-08-27 | 2007-08-27 | Rotating electric machine and method of manufacturing brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101378211A true CN101378211A (en) | 2009-03-04 |
| CN101378211B CN101378211B (en) | 2012-03-28 |
Family
ID=40421596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100960481A Expired - Fee Related CN101378211B (en) | 2007-08-27 | 2008-04-25 | Rotary motor and method for manufacturing electric brush thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4496415B2 (en) |
| KR (1) | KR100973924B1 (en) |
| CN (1) | CN101378211B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082488A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Commutator motor |
| CN109155497A (en) * | 2016-05-10 | 2019-01-04 | Lg伊诺特有限公司 | Motor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102605082B1 (en) * | 2016-05-10 | 2023-11-24 | 엘지이노텍 주식회사 | Motor |
| KR102316130B1 (en) * | 2019-07-19 | 2021-10-25 | 주식회사 만도 | Method and system for manufacturing motor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9509869D0 (en) * | 1995-05-16 | 1995-07-12 | Johnson Electric Sa | Brush assembly for an electric motor |
| JPH10146025A (en) * | 1996-11-06 | 1998-05-29 | Asmo Co Ltd | Brush structure of dc machine |
| KR19990061399A (en) * | 1997-12-31 | 1999-07-26 | 오상수 | Metal Graphite Brush Manufacturing Method |
| JP2002027711A (en) * | 2000-07-10 | 2002-01-25 | Asmo Co Ltd | Brush, brush device, and motor |
| JP2003143813A (en) * | 2001-11-06 | 2003-05-16 | Asmo Co Ltd | Brush device |
| JP2003259607A (en) * | 2002-03-06 | 2003-09-12 | Mitsuba Corp | Brush for motor and manufacturing method therefor |
| JP3610049B2 (en) * | 2002-03-29 | 2005-01-12 | 三菱電機株式会社 | Rotating electric machine |
| KR20030087367A (en) * | 2002-05-08 | 2003-11-14 | 동양기전 주식회사 | Brush for brush motor and manufacturing method thereof |
| JP3767554B2 (en) * | 2002-12-27 | 2006-04-19 | 三菱電機株式会社 | Brush motor for electric power steering system |
| JP2005117707A (en) * | 2003-10-02 | 2005-04-28 | Asmo Co Ltd | Manufacturing method and manufacturing apparatus for rotating electrical machine |
| JP2006311639A (en) * | 2005-04-26 | 2006-11-09 | Mitsubishi Electric Corp | Motor for electric power steering device |
-
2007
- 2007-08-27 JP JP2007219645A patent/JP4496415B2/en not_active Expired - Fee Related
-
2008
- 2008-03-18 KR KR1020080024809A patent/KR100973924B1/en not_active Expired - Fee Related
- 2008-04-25 CN CN2008100960481A patent/CN101378211B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082488A (en) * | 2009-11-30 | 2011-06-01 | 三洋电机株式会社 | Commutator motor |
| CN109155497A (en) * | 2016-05-10 | 2019-01-04 | Lg伊诺特有限公司 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090023020A (en) | 2009-03-04 |
| JP4496415B2 (en) | 2010-07-07 |
| JP2009055707A (en) | 2009-03-12 |
| KR100973924B1 (en) | 2010-08-03 |
| CN101378211B (en) | 2012-03-28 |
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