CN101320613B - Coil member, motor and manufacturing method for coil member - Google Patents
Coil member, motor and manufacturing method for coil member Download PDFInfo
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- CN101320613B CN101320613B CN2008100883199A CN200810088319A CN101320613B CN 101320613 B CN101320613 B CN 101320613B CN 2008100883199 A CN2008100883199 A CN 2008100883199A CN 200810088319 A CN200810088319 A CN 200810088319A CN 101320613 B CN101320613 B CN 101320613B
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- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000002184 metal Substances 0.000 claims abstract description 116
- 229910052751 metal Inorganic materials 0.000 claims abstract description 116
- 238000004804 winding Methods 0.000 claims abstract description 72
- 230000002093 peripheral effect Effects 0.000 claims description 101
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 238000013459 approach Methods 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract 2
- 238000007493 shaping process Methods 0.000 description 28
- 229920005989 resin Polymers 0.000 description 24
- 239000011347 resin Substances 0.000 description 24
- 230000001771 impaired effect Effects 0.000 description 9
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 238000004382 potting Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000001002 morphogenetic effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000278713 Theora Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The invention provides a coil member which can prevent winding from being broken and damaged due to fuzzy grain and can not be damaged due to the metal mould when a molding object is stripped from a metal mould even in a small-sized motor, and a motor using the coil member. In a coil member (45), a cylindrical drum part (100, 100') coiling a winding (46, 46') on the outer circumference is formed by injecting and molding two metal moulds (301, 302) moving left and right in the direction orthogonal with the axes direction of the drum part (100, 100'), the axes direction of the outer circumference has a joint part (400) of the drum part (100, 100') formed along the joint part of the two metal moulds (301, 302), the joint part (400) is formed on a parallel plane (101) formed in parallel to the separating direction of the two metal moulds (301, 302), so as not to interfere with the two metal moulds (301, 302) in the whole sliding area of the two metal moulds (301, 302) and the drum part (100) when the two metal moulds (301, 302) are separated.
Description
Technical field
The present invention relates to a kind of coil component, use the manufacturing approach of motor and this coil component of this coil component.
Background technology
The coil device that in drive units such as stepper motor, is using coiling coil on the coil component that constitutes by bobbin etc. and forming.The coil component that in this coil device, uses generally forms through in the space that will form as a plurality of shaping resin die assemblies of cutting apart structure of metal die, injecting resin with stator core and behind resin solidification, the shaping resin mould being pulled down.Therefore, on the composition surface of shaping resin mould, produce the burr of outstanding shape sometimes.When being formed with this burr in the tube portion at the coiling winding, may Yin Maoci contact and make the winding broken string with winding.In order to prevent this situation; As shown in Figure 8; Disclose following structure: the ora terminalis along shaping resin mould shown in Figure 9 204,204 ' composition surface on cylindric 201 of the tube portion 207 of coiling winding is that die parting line 205 forms undercutting portions 202; The burr 203 that is produced is formed on from the position of coiling face 208 depressions, thereby prevents broken string (for example with reference to patent documentation 1).
Patent documentation 1: Japanese Patent Laid is opened the 2003-347117 communique
For this coil component, as shown in Figure 9, in above-mentioned patent documentation 1 disclosed structure, form aforesaid undercutting portion 202, and after shaping, make a portion 207 disengagement from shaping resin mould 204,204 ' with shaping resin mould 204,204 '.Yet, make shaping resin mould 204,204 ' when the direction shown in arrow P, the P ' is separated, the problem that exists shaping resin mould 204,204 ' protuberance 206,206 ' to interfere with tube portion 207.Especially; For the coil component that in miniature motor, uses; Because therefore the thin thickness of tube portion 207 when shaping resin mould 204,204 ' is separated, can and crack a portion 207 with protuberance 206,206 ' interference; Under situation worst, can exist coil component because of withstanding the damaged problem of winding pressure that is wound on the winding in the portion 207.
Summary of the invention
In view of the above problems; The object of the present invention is to provide a kind of coil component, use the manufacturing approach of motor and this coil component of this coil component; This coil component can prevent winding Yin Maoci and break with impaired, and, even comprise the coil component of the bobbin that uses in the miniature motor; Make the shaping thing when metal die is thrown off, can be not impaired because of metal die yet.
In order to solve the problems of the technologies described above; Coil component of the present invention; Supply winding to be wound on tubular tube portion on the outer peripheral face by carrying out injection molding forming at two metal dies and forming with move left and right on the direction of the axis direction quadrature of this one roundedly; It is characterized in that; Said outer peripheral face is provided with planar portions; The inboard that this planar portions is formed on said outer peripheral face is with in this planar portions and be wound between the inner peripheral surface of the circular winding on the said outer peripheral face and guarantee spatial portion, and forms when said two metal dies are separated and do not interfere with said two metal dies, makes junction in the said tube portion that forms along the junction of said two metal dies on said planar portions.
If constitute like this; Then, metal die do not interfere when separating with said tubular tube portion; Therefore, also can prevent make the coil component after the shaping impaired because of metal die when metal die is thrown off even comprise the coil component of the bobbin that uses in the miniature motor.In addition, even on the junction surface that forms along the junction of two metal dies, produced the occasion of burr, also can prevent winding Yin Maoci and break with impaired.In addition, said planar portions can be formed on when two metal dies are separated on the parallel plane with the parallel formation of detaching direction of said two metal dies.In addition, coil component of the present invention can be the coil component that only is made up of bobbin, also can be the bobbin that has portion of terminal, can also be the bobbin that forms as one with stator core.
In the present invention, said planar portions preferably form make the burr that forms along said junction surface not be wound on said tube portion on winding contact.Particularly, can set the circumferential lengths of said planar portions for length that the burr that forms on the said junction surface is not contacted with inner peripheral surface along the winding of the rounded coiling of said outer peripheral face of said tubular tube portion.If constitute like this,, also can prevent winding Yin Maoci reliably and break with impaired even produced the occasion of burr on the junction surface that then forms in junction along two metal dies.At this moment, preferably on the said outer peripheral face of said tubular tube portion, be formed with two the relative said parallel planes of center that clip said tubular tube portion.
In the present invention; In said tube portion, be formed with from the both ends of axis direction respectively at the circumferential flange part of the outstanding ring-type that forms; Preferably relatively and the coiling portion that supplies said winding to reel is circularly made in the space that forms, with said pair of flanges portion and said planar portions be formed on by in the whole zone of the axis direction of the said tube portion of this flange part clamping.If constitute like this,, also can prevent because of producing broken string that burr causes and impaired even then in the occasion at the both ends of the axis direction that winding is wound to a portion.
In the present invention, preferably in said tube portion, be formed with stator core with utmost point tooth through being shaped as inlaying of injection molding forming.
In the present invention, preferably said utmost point tooth is inlayed the inwall side that is formed in said tube portion, and perhaps, the inner peripheral surface of said utmost point tooth exposes from the inner peripheral surface of said tube portion.In the present invention; When metal die is separated; Tube portion can not produce with metal die and interfere; Therefore even be shaped and occasion that the inner peripheral surface of the occasion of integrally formed inwall side in tube portion and utmost point tooth exposes from the inner peripheral surface of tube portion through inlaying at utmost point tooth, when metal die separates, utmost point tooth pressurized can not take place and the situation of giving prominence to from the inner peripheral surface of tube portion yet.Therefore and since inner peripheral surface that can be through utmost point tooth being inlayed be formed in the inwall side of a portion or made said utmost point tooth from the inner peripheral surface of said tube portion expose and with utmost point tooth and rotor magnet near configuration, so can improve the efficient of motor, and the radial width of a portion is diminished.
In the present invention, said utmost point tooth can be to form along the overlapping form of radial direction and said junction surface.In the present invention, when metal die was separated, tube portion and metal die were not interfered, even so at utmost point tooth with along the overlapping morphogenetic occasion of radial direction and junction surface, utmost point tooth also can not given prominence to from the inner peripheral surface of tube portion.Therefore, can improve the design freedom of motor, and then improve the efficient of motor.
This point is elaborated, for example being formed with in the structure of the undercutting portion at junction surface shown in the background technology, the protuberance of metal die that is used to form undercutting portion when metal die separates with the undercutting portion interference of tube portion.Therefore, the stacked occasion on radial direction of at least one in junction surface and utmost point tooth exists utmost point tooth to topple over and from the inboard distinct issues of tube portion to the inboard of tube portion.As one of its countermeasure; The thickness that can consider the increase tube portion shown in the background technology is so that the method that utmost point tooth also can not toppled over to the inboard of tube portion when the protuberance of metal die is interfered with tube portion, but the thickness of increase tube portion can cause the corresponding problem that reduces of the occupation efficiency of winding in tube portion.To this, can consider to enlarge interval so that utmost point tooth can not contact the periphery of rotor when topple over the inboard of tube portion yet, but can have the corresponding problem that reduces of the occupation efficiency of winding in tube portion from utmost point tooth to the rotor periphery.In addition, can consider to set utmost point tooth, but can have the design freedom decline of motor and then the problem that moyor is descended with the form of avoiding undercutting portion.
Adopt the present invention; When metal die is separated because tube portion and metal die do not interfere, even so utmost point tooth with contact site overlapping morphogenetic occasion on radial direction; Utmost point tooth can not toppled over to the inboard of tube portion yet, can be not side-prominent in the tube portion.Therefore; Even utmost point tooth with contact site overlapping morphogenetic occasion on radial direction; The occupation efficiency of winding in tube portion reduced, in addition, need not to enlarge the distance of periphery from utmost point tooth to rotor magnet; The design freedom that can improve motor is the degree of freedom of the equipping position of utmost point tooth, and then can improve the efficient of motor.
In the present invention, said junction surface preferably is formed on the substantial middle of the detaching direction of two metal dies on the said planar portions, said.If constitute like this, compare with the occasion that junction surface deflection planar portions one side forms, can increase make burr not with the tolerance of winding butt.
In the present invention, said planar portions preferably with the direction of axis direction quadrature on the center of said relatively tube portion be formed with at least on the point-symmetric position a pair of.If constitute like this, the sliding die that opens and closes about then can using forms the outer peripheral face of the tube portion of coil component.Therefore, can coil component not thrown off not impairedly from metal die.
The coil component of the invention described above can be applicable to comprise to have that winding is wound on the outer peripheral face of tubular tube portion of coil component roundedly and the stator of the stator pack that constitutes and the motor that is equipped with the rotor of rotor magnet in interior all sides of said tube portion.The winding Yin Maoci that can prevent to be wound on owing to this motor in the tube portion of coil component breaks with impaired, therefore can reduce failure rate.
In motor of the present invention; Said stator comprises: utmost point tooth is shaped and the interior yoke of integrally formed inwall side in said tube portion and the utmost point tooth outer yoke in being inserted into from the inwall side of said tube portion towards the recess of radial depressions through inlaying, said in the utmost point tooth of utmost point tooth and said outer yoke of the yoke inwall side that can constitute in said tube portion be configured to replace the form that meshes along axis direction.
In motor of the present invention, preferably under the state that the inner peripheral surface of this utmost point tooth exposes from the inwall side of said tube portion, said in utmost point tooth and the utmost point tooth of said outer yoke of yoke be configured with the form relative with said rotor magnet.At this moment, the utmost point tooth of the utmost point tooth of yoke and said outer yoke preferably constitutes outer peripheral face and side by the covering of said tube portion in said.
The coil component of the invention described above can be done as follows manufacturing.Promptly; Supply the manufacturing approach of the coil component that the winding tubular tube portion on the outer peripheral face that is wound on forms by carrying out injection molding forming at two metal dies with move left and right on the direction of the axis direction quadrature of this one roundedly; It is characterized in that; On said two metal dies of the said outer peripheral face that is used to form said tubular tube portion, has the metal die plane; This metal die plane forms along the detaching direction of said two metal dies; And form with the form of when said two metal dies are separated, not interfering with the tubular tube portion of said coil component, the said metal die plane that utilizes said two metal dies forms planar portions on the said outer peripheral face of said tubular tube portion.
Adopt the manufacturing approach of above-mentioned coil component; Because metal die is not interfered with the tubular tube portion that forms coil component when separating; Therefore even comprise the coil component of the small-sized bobbin that uses in the miniature motor, make the shaping thing when metal die is thrown off, tubular tube portion can not gone into towards interior all side pressures by metal die yet; In addition; On the outer peripheral face of said tubular tube portion,, this burr is not contacted be wound on the winding in the said tube portion even on the axis direction of said tube portion, be formed with junction surface (burr) along the junction of two metal dies roundedly.
In the manufacturing approach of above-mentioned coil component, said metal die plane preferably is configured to following length in the length on the direction of engagement of said metal die: the burr that on the junction surface of the said tube portion that forms along the junction of said two metal dies, forms is not also contacted with inner peripheral surface along the circular winding of the said outer peripheral face coiling of said tubular tube portion when being in maximum overhang.If set like this, even then on the axis direction of said tube portion, be formed with junction surface (burr) along the junction of two metal dies, also can make reliably this burr not be wound on said tube portion on winding contact.
In the present invention; Because winding is wound on the said outer peripheral face of the tubular tube portion on the outer peripheral face and is provided with planar portions roundedly; The inboard that this planar portions is formed on said outer peripheral face is with in this planar portions and be wound between the inner peripheral surface of the circular winding on the said outer peripheral face and guarantee spatial portion; And form when said two metal dies are separated and do not interfere with said two metal dies; Make junction in the said tube portion that forms along the junction of said two metal dies on said planar portions; Therefore even in the occasion that is formed with burr along the junction surface, also can make the burr that forms along said junction surface with not be wound on said tube portion roundedly on the form formation that contact of winding, can prevent winding Yin Maoci and break and impaired.
Description of drawings
Fig. 1 is a half sectional view example, motor integral body of the motor of expression the present invention one example.
Fig. 2 be expression the present invention one example coil component an example, coil component dissects the partial sectional view that the back is seen from the direction of arrow with its part between A-A ' shown in Figure 3.
Fig. 3 is the end view of coil component example, motor shown in Figure 1 of the coil component of expression the present invention one example.
Fig. 4 be expression the present invention one example coil component based on an example of the manufacturing process of metal die, schematically expression is in the sectional elevation of tube portion of the coil component of the state that sliding die closed.
Fig. 5 be expression the present invention one example coil component based on an example of the manufacturing process of metal die, schematically yoke is kept by sliding die and the cutaway view of the state that patrix is opened in the expression.
Fig. 6 be expression the present invention one example coil component based on an example of the manufacturing process of metal die, schematically represent the vertical view of the state that sliding die is opened.
Fig. 7 is the enlarged drawing of an a parallel plane portion part on every side example, that amplify the tube portion in the presentation graphs 4 of the coil component of expression the present invention one example.
Fig. 8 is the figure of a part on plane that representes a tube portion example, that amplify the expression coil component of coil component in the past.
Fig. 9 be represent in the past coil component one the example, schematically the expression utilize metal die coil component shown in Figure 8 to be carried out the sketch map of the state of injection molding forming.
(symbol description)
1 motor
5 rotors
3 carriages
4 stators
6 terminal boards
21 rotating shafts
31,31 ' steel ball
32 outlet side bearings
33 reverse pumpings go out side bearing (bearing of a side opposite with outlet side)
34 bearing holding members
35 force application parts
41,41 ' stator core group
42,42 ' utmost point tooth
42A, 42A ' utmost point tooth
43,43 ' interior yoke
44,44 ' outer yoke
45A, 45B coiling portion
46,46 ' winding
54 notch parts
100,100 ' tube portion
101 parallel planes
101 ' plane formation portion
120 burrs
130 spatial portions
301,302 sliding dies
303 patrixes
304 counterdies
400 junction surfaces
Embodiment
Motor to the present invention's one example describes with reference to the accompanying drawings.
Fig. 1 is a half sectional view example, motor integral body of the motor of expression the present invention one example.Fig. 2 is that the expression coil component dissects the partial sectional view that the back is seen from the direction of arrow with its part between A-A ' shown in Figure 3.Fig. 3 is the end view of the coil component of motor shown in Figure 1.Fig. 4 is the sectional elevation of tube portion of schematically representing to be in the coil component of the state that sliding die closed.Fig. 5 representes that schematically interior yoke is kept by sliding die and the cutaway view of the state that patrix is opened.Fig. 6 is the vertical view of the state of representing that schematically sliding die is opened.Fig. 7 is the enlarged drawing of the parallel plane portion part on every side of the tube portion in the presentation graphs 4 of amplifying.
(overall structure of motor)
As shown in Figure 1, the motor 1 of this example has: the carriage 3 on rotor 5, the stator 4 that is configured with the form of surrounding rotor 5 and the outlet side end face that is fixed on stator 4.
One end of rotating shaft 21 is supported on the outlet side bearing 32 through steel ball 31; This outlet side bearing 32 is fixed on the carriage 3 that cross section on the stator 4 is the コ word shape and keeps; The other end of rotating shaft 21 is supported on reverse pumping through steel ball 31 ' and goes out on the side bearing 33, and this reverse pumping goes out side bearing 33 and is fixed on bearing holding member 34 maintenances on the stator 4.This reverse pumping goes out side bearing 33 and is fixed on force application part 35 on the bearing holding member 34 towards the outlet side application of force of rotating shaft 21.Therefore, rotating shaft 21 goes out on the side bearing 33 with reverse pumping being supported on outlet side bearing 32 under the state of the direction application of force of outlet side bearing 32 by force application part 35.
Stator 4 has a pair of stator core group 41,41 ' overlapping on the axis direction of rotating shaft 21, in this example, forms double-layer structural, and in the inside of stator 4, the form that rotor magnet 22 is opened specified gap with sky can be configured with rotating freely.Each stator core group 41,41 ' comprises respectively: the outer yoke 44,44 ' as stator core that under overlapping state, is configured in the axial outside; Be configured in outer yoke 44,44 ' axial inboard and overlapping interior yoke 43,43 ' under the state that eaves portion 431,431 ' contacts with each other as stator core; Be provided in the coil component 45 in the space that constitutes respectively by outer yoke 44 and interior yoke 43 and by outer yoke 44 ' and interior yoke 43 '; And the winding 46,46 ' in rounded the tube portion that is wound on coil component 45.
Winding 46,46 ' is wound on the outer peripheral face of tube portion 100 of coil component 45 roundedly.In addition, in order to distinguish, the tube portion of coiling winding 46 ' is expressed as a portion 100 ' with the tube portion 100 of coiling winding 46.Coil component 45 is through being shaped as inlaying of injection molding forming and interior yoke 43,43 ' is integrally formed, and in this example, is formed with the terminal board 6 with terminal pins 6A～6D in interior yoke 43,43 ' eaves portion 431,431 ' outer peripheral edges.On the inner peripheral surface of coil component 45, along circumferential configuration, likewise, the utmost point tooth 42A of interior yoke 43 ' and the utmost point tooth 42A ' of outer yoke 44 ' are to replace the form that meshes along circumferential configuration with the form of alternately engagement for the utmost point tooth 42 ' of utmost point tooth of interior yoke 43 42 and outer yoke 44.In addition, " the inlaying shaping " in this example thus be meant and in metal die, insert the manufacturing process that metal parts becomes one metal parts and resin-shaped.
(structure of the coil component of this example)
With Fig. 2, Fig. 3 the structure of the coil component 45 of this example is described below.
As shown in Figures 2 and 3; In this example; Coil component 45 be wound with winding 46 on the outer peripheral face, 46 ' tubular tube portion 100,100 ' is utilized in carries out injection molding forming with two metal dies 301,302 of move left and right on the direction of tube portion 100,100 ' axis direction quadrature and form, coil component 45 comprises: as the tubular tube portion 100,100 ' of bobbin; From the both ends of tube portion 100,100 ' axis direction respectively around the outstanding flange part 2,2 ' that forms of circumferential whole circumference as the ring-type of bobbin; Have the utmost point tooth 42 that is integrally formed with tube portion 100,100 ' through inlaying shaping, the interior yoke 43,43 ' of 42A; And on the eaves portion of interior yoke 431,431 ' outer peripheral edges integrally formed terminal board 6.
On tube portion 100,100 ' outer peripheral face, on junction, be formed with junction surface 400 along axis direction by two sliding dies that metal die constituted 301,302 shown in Figure 4.400 attend regular meeting's formation burr 120 at the junction surface, but might not will form burr 120 at the beginning.Because burr 120 is also usually because of long-term the use formed by two sliding dies that metal die constituted 301,302, therefore at the access times of considering metal die, use on the basis of year number the maximum overhang of the burr 120 of formation on the supposition junction surface 400.On two metal dies 301,302, be formed with metal die plane 3011,3021; This metal die plane 3011,3021 is used for going up the planar portions stated after forming, being the parallel plane 101 of this example at tube portion 100,100 ' outer peripheral face 102,102 '; Make two metal dies 301,302 towards the described arrow X of Fig. 4, when X ' direction is separated; For a portion 100,100 ' is not pressed in two sliding dies 301,302 in the zone that two sliding dies 301,302 and tube portion 100,100 ' slide; Metal die plane 3011,3021 forms parallel with the detaching direction (arrow X, X ' direction) of two sliding dies 301,302, is located on the parallel plane 101 that forms on a portion 100,100 ' the outer peripheral face at the junction surface 400 that forms on the seam of two metal dies 301,302.In this example, be formed with pair of parallel plane 101 with being on point-symmetric two positions of the direction (radially) of axis direction quadrature with respect to tube portion 100,100 ' center.Therefore, equally also be formed with a pair of metal die plane 3011,3021 that on two metal dies 301,302, forms.As shown in Figure 3, junction surface 400 is positioned at the substantial middle of detaching direction of two sliding dies 301,302 of parallel plane 101.
In addition; In this example, as shown in Figure 4, in the 400 residing parallel planes 101 of junction surface; In the occasion that sliding die 301,302 is separated towards arrow X, X ' direction, the width Y of the parallel plane 101 on the detaching direction of sliding die 301,302, the size of Y ' form equal.For the width Y that makes parallel plane 101, the equal and opposite in direction of Y ', can the length setting on the metal die plane 3011,3021 that on two metal dies 301,302, forms be become to equate.In addition, also can the width Y of parallel plane 101, the size of Y ' be formed difference.Junction surface 400 forms along the junction of two sliding dies 301,302.Promptly; As shown in Figure 3, junction surface 400 is formed on: go up the flange part 2 ' that forms in the whole zone of the upper surface of tube portion 100 (the paper upside of Fig. 3) flange part 2 that go up to form and the axis direction of going up the tube portion 100 between the flange part 2 that forms in the lower surface of tube portion 100 (the paper downside of Fig. 3) and in the upper surface of tube portion 100 ' (the paper upside of Fig. 3) and in the lower surface of tube portion 100 ' (the paper downside of Fig. 3) upward in the whole zone of the axis direction of the tube portion 100 ' between the flange part 2 ' of formation.
Parallel plane 101 is also the same with junction surface 400; As shown in Figure 3, be formed on: go up the flange part 2 ' that forms in the whole zone of the upper surface of tube portion 100 (the paper upside of Fig. 3) flange part 2 that go up to form and the axis direction of going up the tube portion 100 between the flange part 2 that forms in the lower surface of tube portion 100 (the paper downside of Fig. 3) and in the upper surface of tube portion 100 ' (the paper upside of Fig. 3) and in the lower surface of tube portion 100 ' (the paper downside of Fig. 3) upward in the whole zone of the axis direction of the tube portion 100 ' between the flange part 2 of formation.In addition, the size (with reference to Fig. 4) of the width Y of parallel plane 101, Y ' form when junction surface 400 is formed with burr 120, make burr 120 not be wound on a portion 100,100 ' roundedly on the size that contacts of winding 46,46 '.That is, be wound with winding 46 when going up, 46 ' time, formation spatial portion 130 (with reference to Fig. 7) between the winding of circle 46,46 ' inner peripheral surface and parallel plane 101 at tube portion 100,100 ' outer peripheral face 102,102 ' roundedly.In other words, between the winding of circle 46,46 ' inner peripheral surface and parallel plane 101, to form the form coiling winding 46,46 ' of spatial portion 130 (with reference to Fig. 7).At this moment; Because as long as the width Y, the Y ' that have confirmed parallel plane 101 just can confirm winding 46,46 ' radial position and the radial position of junction surface 400 residing parallel planes 101 of interior circumferential portion in advance; Therefore on the basis of the size of the burr of considering to form along junction surface 400 120, the form that can contact with winding 46,46 ' with the front end of burr 120 is set the width Y, Y ' of parallel plane 101, the i.e. length on the metal die plane 3011,3021 of formation on metal die 301,302.In addition; If width Y, the Y ' of parallel plane 101 are long; Then the most in the winding 46,46 ' radial position meeting of circumferential portion than original circumference more near the inboard; Therefore, so long as winding 46,46 ' not can with the scope of the burr butt that forms along junction surface 400 in, width Y, Y ' are less relatively good.
On tube portion 100,100 ' outer peripheral face, be formed with a plurality of notch parts 54.This notch part 54 is break-through to the breach of the outer peripheral face of interior yoke 43,43 ' utmost point tooth 42,42A.In this example; For prevent in the manufacture process of coil component 45 to inlay the interior yoke 43 of shaping in tube portion 100,100 ' inwall side, 43 ' utmost point tooth 42,42A swings to outer circumferential side because of the load that is produced to sliding die 301,302 potting resins, on sliding die 301,302, is formed with the projection (not shown) that prevents to topple over usefulness.Therefore, notch part 54 is to form through potting resin under the state of the outer peripheral face butt of the projection that prevents to topple over usefulness and utmost point tooth 42,42A.In addition, the projection that prevents to topple over use be preferably formed as into all utmost point tooth 42,42A butts, at this moment, notch part 54 can be formed on the outer peripheral face of all utmost point teeth 42,42A.
Interior yoke 43,43 ' utmost point tooth 42,42A and tube portion 100,100 ' are integrally formed, and interior yoke 43,43 ' utmost point tooth 42,42A inlay the portion that is formed in 100,100 ' inwall side.In this example; Owing to the state potting resin of utmost point tooth 42,42A clamping, therefore can prevent to cause utmost point tooth 42,42A towards radially toppling over because of the pressure of potting resin with the central assisted parts 304a of the counterdie 304 that prevents to topple over the projection of usefulness at butt on the outer peripheral face of utmost point tooth 42,42A and behind butt on the inner peripheral surface of utmost point tooth 42,42A, state.In addition; Because potting resin under the state of central assisted parts 304 butts of the inner peripheral surface of utmost point tooth 42,42A and counterdie 304; Therefore except the position that is equipped with the projection that prevents to topple over usefulness; The outer peripheral face of utmost point tooth 42,42A and side are all covered by resin, inlay under utmost point tooth 42, the 42A state in being embedded in a portion 100,100 ' to be formed in the inwall side.On the other hand, the inner peripheral surface of utmost point tooth 42,42A is not embedded in the portion 100,100 ', but exposes from tube portion 100,100 ' inner peripheral surface.Therefore, the inner peripheral surface of utmost point tooth 42,42A is relative with rotor magnet 22 with the state that does not clip resin (tube portion 100,100 ').In addition, in a plurality of utmost point tooth 42,42A, utmost point tooth 420 be formed on junction surface 400 along on the radial direction position overlapped.
In addition, be formed with in tube portion 100,100 ' inwall side and supply outer yoke 44,44 ' utmost point tooth 42 ', the utmost point tooth patchhole 47 of 42A ' insertion.Utmost point tooth patchhole 47 is the recesses from the inwall side towards radial depressions, and one of which side is at flange part 2, the 2 ' side opening in the outside.Therefore; After from flange part 2,2 ' the axial outside outer yoke 44,44 ' utmost point tooth 42 ', 42A ' being inserted; The same with adjacent interior yoke 43,43 ' utmost point tooth 42,42A; Form to cover utmost point tooth 42 ', the outer peripheral face of 42A ' and the form of side with resin, but the inner peripheral surface of utmost point tooth 42 ', 42A ' exposes from tube portion 100,100 ' inner peripheral surface, relative with the state that does not clip resin (tube portion 100,100 ') with rotor magnet 22.
In this example; Will be in the upper surface of tube portion 100 and be positioned at the pair of flanges portion 2,2 that forms on the lower surface of tube portion 100 at eaves portion 431 places of yoke 43 relatively and the space that forms forms as the 45A of coiling portion; In addition, will space formation forms as the 45B of coiling portion in that pair of flanges portion that the downside of the eaves portion 431 ' of interior yoke 43 ' promptly forms on the lower surface of upper surface and the tube portion 100 ' of tube portion 100 ' 2 ', 2 ' is relative.
Because the 45A of coiling portion utilizes the eaves portion 431 of flange part 2,2 and interior yoke 43, the eaves portion 441 of outer yoke 44 to completely cut off; The utmost point tooth 42 of interior yoke 43, outer yoke 44,42 ' is completely cut off by tube portion 100; And tube portion 100 to be to form the form that its outer peripheral face covers with resin, therefore is wound on winding 46 on the 45A of coiling portion and can guarantees and the abundant states of insulation of interior yoke 43, outer yoke 44.In addition; Because the 45B of coiling portion utilizes flange part 2 ', 2 ' to completely cut off with the eaves portion 441 ' of the eaves portion 431 ' of interior yoke 43 ', outer yoke 44 '; The utmost point tooth 42A of interior yoke 43 ', outer yoke 44 ', 42A ' are completely cut off by tube portion 100 '; And tube portion 100 ' to be to form the form that its outer peripheral face covers with resin, therefore is wound on winding 46 ' on the 45B of coiling portion and can guarantees and the abundant state of insulation of interior yoke 43 ', outer yoke 44 '.
Terminal board 6 through inlay shaping be formed in integratedly in yoke 43,43 ' eaves portion 431,431 ' outer peripheral edges; Four terminal pins 6A, 6B, 6C, 6D to be forming towards radially outstanding form, in last winding 46,46 ' the end of twining of each terminal pins 6A, 6B, 6C, 6D.In addition, in this example, terminal board 6 is with shown in Figure 3 integrally formed at flange part that forms on the lower surface of tube portion 100 2 and the flange part 2 ' that on the upper surface of tube portion 100 ', forms.
(shaping dies that in the manufacturing of the coil component of this example, uses)
Describe in the face of the metal die 301～304 that uses in the manufacturing of online coil component 45 down as shaping dies.
Like Fig. 4 and shown in Figure 5, comprise patrix 303, pair of right and left sliding die 301,302 and counterdie 304 as the metal die 301～304 of shaping dies.In addition, with patrix 303, pair of right and left sliding die 301,302 and counterdie 304 during as a unit, metal die 301～304 has been arranged side by side a plurality of unit.In addition, except sliding die 301,302, on counterdie 304, also has another the not shown sliding die that is used to form terminal board 6.
As shown in Figure 4; Arrow X, X ' expression be to make the detaching direction of sliding die 301,302 when shaping thing (coil component 45) separates; Because being used to form the detaching direction of 3011,3021 and two sliding dies 301,302 in metal die plane of parallel plane 101 forms abreast; Therefore when sliding die 301,302 was separated, the whole zone that sliding die 301,302 and tube portion 100,100 ' slide was that parallel plane 101 is not interfered with sliding die 301,302.In addition, be formed with pair of parallel plane 101 on the point-symmetric position being with respect to tube portion 100,100 ' center.
As shown in Figure 5, patrix 303 is to be the metal die of lid shape of the upper surface locking of die cavity with the synthetic resin inflow space that is formed by the matched moulds of counterdie 304 and sliding die 301,302, is arranged to and can moves up and down.In addition, outstandingly on the upper surface of counterdie 304 be formed with central assisted parts 304a, the assisted parts 304a of these central authorities is used for the interior yoke 43 of coil component 45,43 ' utmost point tooth 42, the inner surface side of 42A are supported.In other words, the assisted parts 304a of these central authorities is inserted in and comes shaping drum portion 100,100 ' internal face in the interior yoke 43,43 ' of coil component 45.
In addition; Pair of right and left sliding die 301,302 is used for the lateral surface that comprises the tube portion 100 that constitutes the coil component 45 that the coiling 45A of portion, 45B use, 100 ' outer peripheral face is formed, being arranged on the counterdie 304 towards the form that arrow X shown in Figure 4, X ' direction open and close.In addition, the medial surface of sliding die 301,302 is provided with three grooves that are arranged in order from top to bottom, i.e. the second groove 302a (2) of the first groove 302a (1) of foot, central portion and the three-flute 302a (3) of topmost.In addition, in order to form terminal board 6, be provided with the not shown sliding die that was arranged in 301,302 minutes with sliding die the form that moves being opened and closed towards direction with arrow X, X ' direction quadrature.
As shown in Figure 5, the second groove 302a (2) of central portion utilizes relative in the axial direction opposite face to form the die cavity of semicircle arcuation.In addition, the die cavity of the first groove 302a (1) of foot is formed by counterdie 304 and sliding die 301,302, and the die cavity of the three-flute 302a (3) of topmost is formed by patrix 303 and sliding die 301,302.
Especially, in the second groove 302a (2) of central portion, be formed with maintaining part 302b in the outside of die cavity, this maintaining part 302b keeps overlapping interior yoke 43, two eaves portions of 43 ' 431,431 ' outer peripheral edges.Therefore, the die cavity of the second groove 302a (2) is in the inboard of maintaining part 302b, form supply synthetic resin flow in the space of semicircle arcuation on two faces in the surface and the back side of yoke 43,43 ' eaves portion.
(manufacturing approach of the coil component of this example)
Down in the face of having used manufacturing approach to describe as the coil component 45 of the metal die 301～304 of shaping dies.
At first, as shown in Figure 6, under the die opening state of sliding die 301,302, use not shown position holding device to make two terminal pins 6B, 6D and by utmost point tooth 42 with have interior yoke 43 that the eaves portion 431 of utmost point tooth 42 constitutes with the level holding position.At this, interior yoke 43 uses a plate 401 with terminal pins 6B, 6D and utilizes binding parts 40 to link.In addition, interior yoke 43 ' also uses a plate with shape identical with interior yoke 43, through the holding position oppositely of yoke 43 in making, can obtain downward utmost point tooth 42A, and can dispose two terminal pins 6A, 6C.
The interior yoke 43 that links with plate 401 makes progress utmost point tooth 42 on paper, and not shown interior yoke 43 ' makes its utmost point tooth 42A downward, is integrally formed through spot welding or laser welding etc. making under the overlapping state of each other eaves portion 431,431 '.In addition, the interior yoke that is integrally formed 43,43 ' with not shown position holding device with the state holding position of location in the axial direction.Under this state, as shown in Figure 5, in interior yoke 43,43 ' inner peripheral, insert central assisted parts 304a, carry out location radially simultaneously.Under this state, as shown in Figure 5, interior yoke 43,43 ' eaves portion 431,431 ' and to be in the second groove 302a (2) of the central portion on the pair of right and left sliding die 301,302 of die opening state relative become its inner state of embedding.In addition, as shown in Figure 5, patrix 303 also moves to upside and becomes open mode with respect to sliding die 301,302.
Then, through sliding die 301,302 is moved towards the direction in the opposite direction with arrow X shown in Figure 6, X ' sliding die 301,302 is closed.On sliding die 301,302, being formed with the detaching direction of sliding die 301,302 is the parallel metal die plane of arrow X, X ' 3011,3021.In addition, the not shown sliding die that is used to form terminal board 6 is also from closing with the direction of X, X ' direction quadrature.Thus, interior yoke 43,43 ' eaves portion 431,431 ' and four terminal pins 6A, 6B, 6C and 6D are held under the state that has carried out the location with respect to sliding die 301,302.In addition, if interior yoke 43,43 ', four terminal pins 6A, 6B, 6C and 6D be by maintenances such as sliding dies 301,302, then it is moved to outside the sliding die 301,302 etc. with the form of changing not shown position holding device.
At this moment, yoke 43 in sliding die 301,302 allows, 43 ' eaves portion 431,431 ' get into, and this eaves portion 431,431 ' is held in the state that is positioned between the maintaining part 302b shown in Figure 5.That is, interior yoke 43,43 ' eaves portion 431,431 ' get in the second groove 302a (2), and its outer peripheral edges are held the 302b of portion and keep, and the inboard of outer peripheral edges is positioned at the die cavity of semicircle arcuation.
Then, patrix 303 is closed.Thus, the upper surface open of die cavity and sliding die 301,302 are sealed, and are used to make the synthetic resin of molten condition to flow into the state formation of the interior die cavity of metal die with complete closed.
Then, through not shown cast gate synthetic resin is injected in the die cavity.Being combination with this synthetic resin is integrally formed interior yoke 43,43 ' and four terminal pins 6A, 6B, 6C and 6D.That is, interior yoke 43, each utmost point tooth 42 of 43 ', 42A each other and the outer peripheral face of this utmost point tooth 42,42A be synthesized resin and be full of fully and surround, thereby form tube portion 100,100 '.In addition, because synthetic resin gets in each die cavity of semicircle arcuation of each groove 302a, so eaves portion 431,431 ' is synthesized resin and covers, tube portion 100,100 ' form flange part 2,2 and 2 ', 2 ' up and down respectively.In addition, on the part suitable, form parallel plane 101 with metal die plane 3011,3021.
In addition, behind the curable synthetic resin in injecting die cavity, opposite order is opened patrix 303 and sliding die 301,302 is opened with matched moulds the time, thereby carries out the demoulding.
If the shaping thing is thrown off from metal die 301～304, then can on the plate group, form and be bonded the coil component 45 that parts 40 link.At last, with downcutting on the coil component 45 slave plate groups, can form coil component 45 as separate part.At this moment, for carry out for board 401 with coil component 45 and the cut-out operation of the joint portion 402 that is provided with preferably is pre-formed aligned in position portion 50 shown in Figure 2.
Coiling winding 46,46 ' is gone up by tube portion 100,100 ' at the coil component 45 that forms like this; Winding 46,46 ' is wound into along the circle of tube portion 100,100 ' outer peripheral face; The winding 46 in week, 46 ' is also being wound into along the circle of tube portion 100,100 ' outer peripheral face, parallel plane 101 with in winding 46, the corresponding spatial portion 130 of circumferential lengths (with reference to Fig. 7) of formation and parallel plane 101 between 46 ' in week.Therefore; Adopt this example; As shown in Figure 7 and since parallel plane 101 with in all winding 46, be formed with spatial portion 130 between 46 ', even so along the junction surface 400 be formed with burr 120 occasion; Also can be accommodated in the spatial portion 130, burr 120 is not contacted with interior all windings 46,46 ' through the width Y of suitable setting parallel plane 101, big young pathbreaker's burr 120 of Y '.
(effect of example)
Like this; In the coil component 45 of this example; On tube portion 100,100 ' outer peripheral face, form junction surface 400 along axis direction, this junction surface 400 is in order to be arranged on separating sliding die that a portion 100,100 ' is not interfered with sliding die 301,302 on the parallel plane 101 with the parallel formation of detaching direction of sliding die 301,302.If constitute like this, can prevent that then coil component 45 is impaired because of metal die from sliding die 301,302 disengagements the time.
In addition, parallel plane 101 forms with the direction of the arrow X of Fig. 2, X ' and is parallel position relation, and junction surface 400 is set on the equal-sized position of separation width Y on the detaching direction of sliding die 301,302, Y '.If constitute like this, then can strengthen the burr that forms from parallel plane 101 separating distance to winding.Therefore, can prevent Yin Maoci more reliably and cause the broken string and the damage of winding.
In addition, parallel plane 101 is formed on the point-symmetric position on the direction with the axis direction quadrature, and junction surface 400 is formed on the parallel plane 101.If constitute like this, can prevent that then burr because of continuous formation between a side's of coil component end face portion and the opposing party's end face portion from causing the broken string and the damage of winding.
In addition; Because junction surface 400 is formed on the substantial middle of detaching direction of the sliding die 301,302 of parallel plane 101; Even therefore along the junction surface 400 produced burr 120 occasion; Compare with the occasion that a side of junction surface 400 deflection parallel planes 101 forms, 46,46 ' distance also can extend from the front end of burr 120 to winding.
In addition; Even when when the inboard integrally formed interior yoke of tube portion 100 43,43 ' utmost point tooth 42,42A are configured in the radial direction inboard (with reference to the utmost point tooth 420 of Fig. 2) at junction surface 400; Also can move and make coil component 45 demouldings towards direction through making sliding die 301,302 with 180 ° of X, X ' direction upsets; Thereby make sliding die 301,302 can utmost point tooth 42,42 ' be pressed into the inboard, therefore can be along the junction surface 400 configuration utmost point teeth 42,42 '.Therefore, can with burr with the direction of axis direction quadrature on overlapping form form utmost point tooth, can improve the configuration degree of freedom in design of utmost point tooth.
(other example)
In above-mentioned example; Metal die plane 3011,3021 forms the parallel plane 101 with the parallel formation of detaching direction (direction of arrow X, X ') of two sliding dies 301,302 on tube portion 100,100 ' outer peripheral face; To make two metal dies 301,302 when the direction of arrow X shown in Figure 4, X ' is separated, a portion 100,100 ' can be pressed in the zone of two sliding dies 301,302 and tube portion 100,100 ' slip by two sliding dies 301,302.But; Tube portion 100,100 ' is pressed into only otherwise by two sliding dies 301,302 and gets final product; Going up the planar portions that forms at tube portion 100,100 ' outer peripheral face 102,102 ' can be not parallel with the detaching direction (direction of arrow X, X ') of two sliding dies 301,302 yet, and the form that the junction surface that also can make two sliding dies 301,302 is positioned at the outside with than parallel plane 101 time slightly is formed obliquely.
In addition; Coil component 45 need not with interior yoke 43 ' integrally formed, also can by the tubular tube portion 100 of coiling winding 46 on outer peripheral face and from the both ends of the axis direction of tube portion 100 around the flange part 2 of the outstanding ring-type that forms of circumferential whole circumference, have through inlaying shaping with the interior yoke 43 of the integrally formed utmost point tooth 42 of tube portion 100, be formed with terminal board 6 in the outer peripheral edges of the eaves portion 431 of interior yoke and constitute.In addition, the interior yoke 43 with utmost point tooth 42 also can be used as the parts of opening in 45 minutes with coil component and constitutes, and can not inlay with tube portion 100 to be configured as one.At this moment, coil component 45 just forms as bobbin.
Above-mentioned coil component 45 uses sliding dies 301,302 and patrix 303, counterdie 304 to be shaped, but the structure of the metal die that coil component 45 is formed is not limited thereto.For example, the metal die of shaping glide direction uses two sliding dies 301,302 to constitute, but also can use the metal die of the shaping glide direction more than three that coil component 45 is formed.In addition, for patrix 303, present embodiment constitutes patrix 303 as a metal die, but also can use the metal die of direction in the plural shaping that coil component 45 is formed.
Above-mentioned example uses stepper motor to be illustrated, but except stepper motor, the present invention also can be applicable to use all motors (for example HB motor and Brushless DC motor etc.) of coil component.
Claims (17)
1. coil component; Supply winding to be wound on tubular tube portion on the outer peripheral face by carrying out injection molding forming at two metal dies and forming with move left and right on the direction of the axis direction quadrature of this one roundedly; Said outer peripheral face is provided with planar portions; The inboard that this planar portions is formed on said outer peripheral face is with in said planar portions and be wound between the inner peripheral surface of the circular winding on the said outer peripheral face and guarantee spatial portion; And form when said two metal dies are separated and do not interfere with said two metal dies; Make junction in the said tube portion that forms along the junction of said two metal dies on said planar portions, it is characterized in that, said planar portions is the parallel plane portion with the parallel formation of detaching direction of said two metal dies.
2. coil component as claimed in claim 1; It is characterized in that the circumferential lengths of said planar portions is configured to following length: the burr that forms on the said junction surface is not contacted with inner peripheral surface along the said winding of the rounded coiling of said outer peripheral face of said tubular tube portion.
3. coil component as claimed in claim 2 is characterized in that,
In said tube portion, be formed with the pair of flanges portion of ring-type, this forms towards radial direction is outstanding respectively the both ends of flange part from axis direction,
Be formed with said planar portions with said pair of flanges portion relatively and the coiling portion that supplies said winding to reel is circularly made in the space that forms, and in by the whole zone of the axis direction of the said tube portion of said flange part clamping.
4. coil component as claimed in claim 2 is characterized in that, on the said outer peripheral face of said tubular tube portion, is formed with two the relative said planar portions of center that clip said tubular tube portion.
5. coil component as claimed in claim 1 is characterized in that, in said tube portion, is formed with the stator core with utmost point tooth through being shaped as inlaying of injection molding forming.
6. coil component as claimed in claim 5 is characterized in that, the inner peripheral surface of said utmost point tooth exposes from the inner peripheral surface of said tube portion.
7. coil component as claimed in claim 6 is characterized in that, said utmost point tooth is to form with said junction surface overlapping form on radial direction.
8. coil component as claimed in claim 1 is characterized in that, said junction surface is formed on the substantial middle on the detaching direction of two metal dies on the said planar portions, said.
9. coil component as claimed in claim 1 is characterized in that, said planar portions with the direction of axis direction quadrature on the center of said relatively tube portion be formed with at least on the point-symmetric position a pair of.
10. motor; Comprise: have that winding is wound on the outer peripheral face of tubular tube portion of coil component roundedly and the stator of the stator pack that constitutes and the rotor that is equipped with rotor magnet in interior all sides of said tube portion; Said coil component is by carrying out injection molding forming at two metal dies with move left and right on the direction of the axis direction quadrature of said tubular tube portion and forming; The said outer peripheral face of said tubular tube portion is provided with planar portions; The inboard that this planar portions is formed on said outer peripheral face is with in said planar portions and be wound between the inner peripheral surface of the circular winding on the said outer peripheral face and guarantee spatial portion; And form when said two metal dies are separated and do not interfere with said two metal dies; Make junction in the said tube portion that forms along the junction of said two metal dies on said planar portions; Burr on the junction surface of the said tube portion that forms on the said planar portions is not contacted with the inner peripheral surface of said circular winding, it is characterized in that, said planar portions is the parallel plane portion with the parallel formation of detaching direction of said two metal dies.
11. motor as claimed in claim 10 is characterized in that,
Said stator comprises: utmost point tooth is shaped and the interior yoke of integrally formed inwall side in said tube portion and the utmost point tooth outer yoke in being inserted into from the inwall side of said tube portion towards the recess of radial depressions through inlaying,
The utmost point tooth of utmost point tooth and the said outer yoke of yoke replaces the form that meshes with the inwall side in said tube portion along axis direction and is configured in said.
12. motor as claimed in claim 11 is characterized in that, under the state that the inner peripheral surface of said utmost point tooth exposes from the inwall side of said tube portion, said in utmost point tooth and the utmost point tooth of said outer yoke of yoke be configured with the form relative with said rotor magnet.
13. motor as claimed in claim 12 is characterized in that, said in outer peripheral face and the side of utmost point tooth of utmost point tooth and said outer yoke of yoke by the covering of said tube portion.
14. motor as claimed in claim 10; It is characterized in that the circumferential lengths of said planar portions is configured to following length: the burr that forms on the said junction surface is not also contacted with the inner peripheral surface of the circular winding of reeling along the said outer peripheral face of said tubular tube portion when being in maximum overhang.
15. motor as claimed in claim 14 is characterized in that,
Said coil component has the flange part of ring-type, and this flange part forms from the both ends of the axis direction of said tube portion around circumferential whole circumference is outstanding,
Be formed with said planar portions with the outer peripheral face of said tube portion and said pair of flanges portion relatively and the coiling portion that supplies said winding to reel is circularly made in the space that forms, and in by the whole zone of the axis direction of the said tube portion of said flange part clamping.
16. the manufacturing approach of a coil component; In this coil component; Supply winding to be wound on tubular tube portion on the outer peripheral face by carrying out injection molding forming at two metal dies and forming with move left and right on the direction of the axis direction quadrature of this one roundedly; Said manufacturing approach is characterised in that
On said two metal dies of the said outer peripheral face that is used to form said tubular tube portion, has the metal die plane; This metal die plane is with the parallel formation of detaching direction of said two metal dies; And form with the form of when said two metal dies are separated, not interfering with the tubular tube portion of said coil component
The said metal die plane that utilizes said two metal dies forms planar portions on the said outer peripheral face of said tubular tube portion.
17. the manufacturing approach of coil component as claimed in claim 16; It is characterized in that said metal die plane is configured to following length in the length on the direction of engagement of said metal die: the burr that on the junction surface of the said tube portion that forms along the junction of said two metal dies, forms is not also contacted with inner peripheral surface along the circular winding of the said outer peripheral face coiling of said tubular tube portion when being in maximum overhang.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007094897 | 2007-03-30 | ||
| JP2007094897 | 2007-03-30 | ||
| JP2007-094897 | 2007-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101320613A CN101320613A (en) | 2008-12-10 |
| CN101320613B true CN101320613B (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100883199A Expired - Fee Related CN101320613B (en) | 2007-03-30 | 2008-03-26 | Coil member, motor and manufacturing method for coil member |
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| Country | Link |
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| JP (1) | JP5207785B2 (en) |
| CN (1) | CN101320613B (en) |
Families Citing this family (3)
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|---|---|---|---|---|
| JP6532199B2 (en) * | 2014-08-21 | 2019-06-19 | 日本電産サンキョー株式会社 | Method of manufacturing coil bobbin and deburring apparatus |
| JP6656813B2 (en) * | 2015-03-10 | 2020-03-04 | 株式会社シマノ | Fishing reel reciprocating mechanism and fishing reel |
| CN104822035A (en) * | 2015-04-28 | 2015-08-05 | 青岛海信电器股份有限公司 | Frame, display device and television set |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60143604A (en) * | 1984-11-30 | 1985-07-29 | Hitachi Ltd | Coil bobbin for electric apparatus |
| JP2763422B2 (en) * | 1991-08-26 | 1998-06-11 | 株式会社エンプラス | Resin moldings and molds for molding resin moldings |
| JP3461123B2 (en) * | 1998-07-28 | 2003-10-27 | ミネベア株式会社 | Stator structure of Crop-pole type stepping motor |
| JP2003347117A (en) * | 2002-05-30 | 2003-12-05 | Mitsubishi Electric Corp | Bobbin of coil device and its forming method |
| JP2005312233A (en) * | 2004-04-23 | 2005-11-04 | Mitsubishi Material Cmi Kk | Stepping motor and manufacturing method therefor |
-
2008
- 2008-03-11 JP JP2008061658A patent/JP5207785B2/en active Active
- 2008-03-26 CN CN2008100883199A patent/CN101320613B/en not_active Expired - Fee Related
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| JP5207785B2 (en) | 2013-06-12 |
| JP2008278741A (en) | 2008-11-13 |
| CN101320613A (en) | 2008-12-10 |
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