CN1933059A - Line filter and its manufacturing method - Google Patents
Line filter and its manufacturing method Download PDFInfo
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- CN1933059A CN1933059A CN 200610128079 CN200610128079A CN1933059A CN 1933059 A CN1933059 A CN 1933059A CN 200610128079 CN200610128079 CN 200610128079 CN 200610128079 A CN200610128079 A CN 200610128079A CN 1933059 A CN1933059 A CN 1933059A
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Abstract
To provide a line filter in which the distance between a center magnetic core to be inserted and a magnetic core of closed magnetic path is made constant during assembly, and in which normal mode characteristics are made stabilized, in the line filter for removing noise. A through-hole guide hole for guiding the center magnetic core is provided to an intermediate collar of the bobbin, and the magnetic core of closed magnetic path is built into the through-hole of bobbin. One winding and the other winding are wound around the bobbin, and the center magnetic core is inserted into the internal side of the through-hole guide hole from the external side. The magnetic core of closed magnetic path is fixed on a terminal board, a processor for compensating position is pressed with a tool from a tool inserting hole provided to the bobbin, and the center magnetic core is moved in the outer peripheral direction of the bobbin and is then fixed to the positioning part provided on the terminal board.
Description
Technical field
The present invention relates to the line filter that in various electronic equipments, uses.
Background technology
With reference to description of drawings line filter in the past.
Fig. 9 is the stereogram of line filter in the past, and Figure 10 is the stereogram of the center magnetic core of this line filter, and Figure 11 is the stereogram of the bobbin of this line filter.
At Fig. 9, Figure 10, among Figure 11, line filter in the past is provided with: the bobbin 1 that has the through hole of cylinder on the axial region of center, closed magnetic circuit magnetic core 2 with day word shape of the central magnetic pin 21 in the through hole that is inserted into this bobbin 1, be wound on a spiral and another root spiral on this bobbin, be configured in the center magnetic core 3 the recess 1a on interior all sides of this bobbin 1 from the inboard, this center magnetic core 3 is fixed on hooking sheet 1c in the bobbin 1, the terminal board 4 of this bobbin 1 of support fixation and closed magnetic circuit magnetic core 2, the terminal 51 that plants on this terminal board 4 and a spiral and another root spiral are connected.
Bobbin 1 has a plurality of round flanges and a plurality of coiling portion, is divided into 2, is provided with recess 1a on the interior perimembranous at divided monolithic bobbin, and the card locking mechanism by hooking sheet 1c in this recess 1a disposes center magnetic core 3.Monolithic bobbin after the combination disposes the central magnetic pin of the closed magnetic circuit magnetic core 2 of day word shape, with a spiral and another root reel around.
On the monolithic bobbin, be provided with perforation window 1b by outer peripheral face, dispose center magnetic core 3, this center magnetic core 3 is provided with the jut 3a that is projected among this perforation window 1b, and the part of center magnetic core 3 is exposed, and forms with closed magnetic circuit magnetic core 2 to be noncontact.
In addition, as the prior art document that is associated with the application, for example known have a patent documentation 1.
[patent documentation 1] TOHKEMY 2000-195730 communique
But, in the line filter of such structure, center magnetic core 3 only is fixed in the recess 1a by the hooking sheet 1c card on the both ends of the recess 1a of bobbin 1, but, for the inboard of center magnetic core 3 from bobbin being inserted into the recess 1a, on front end, be provided with the slit in the both sides of hooking sheet 1c, make hooking sheet 1c have elasticity, thereby flexibly keep center magnetic core 3, so hooking sheet 1c opens laterally when coiling coil etc., though regulated the position of center magnetic core 3, but can not be fixed on the correct position, harmful effect be arranged for the elimination of normal mode noise.
In addition, be provided with the hooking sheet 1c that center magnetic core 3 is pressed from the inner peripheral surface side direction outer peripheral face thruster of bobbin 1, towards the bottom surface of recess 1a pushing center magnetic core 3, pass through to connect the window 1b pushes protrusion 3a of portion from the outside of monolithic bobbin, but, because hooking sheet 1c is formed by elastomers such as resins, so, it is unstable that the position of center magnetic core 3 becomes, and can not correctly locate.
And then, pass through to connect the window 1b pushes protrusion 3a of portion from the outside of monolithic bobbin, still, because can not decompose the bobbin 1 that is wound with coil, so the position of center magnetic core 3 and closed magnetic circuit magnetic core 2 is become necessarily.
Therefore, it might not be certain being inserted into the center magnetic core 3 of bobbin 1 and the position of closed magnetic circuit magnetic core 2, has normal mode characteristic problem of unstable.
Summary of the invention
So, the invention provides a kind of position of center magnetic core 3 and closed magnetic circuit magnetic core 2 that makes and on making, be line filter certain, that make the normal mode stability of characteristicsization.
In order to solve above-mentioned problem, in the present invention, shown in technical scheme 1, be a kind of line filter, make the position stability of center magnetic core, this line filter possesses: bobbin, on the axial region of center, have through hole, and on the two ends of periphery, have outward flange portion; The closed magnetic circuit magnetic core of day word shape is inserted in central magnetic pin in the through hole of above-mentioned bobbin; A spiral and another root spiral are wound on the above-mentioned bobbin; Center magnetic core is inserted in the above-mentioned bobbin; Terminal board keeps above-mentioned closed magnetic circuit magnetic core; It is characterized in that above-mentioned bobbin has the flange portion of an above-mentioned spiral and above-mentioned another root spiral being cut apart and be inserted with above-mentioned center magnetic core in the substantial middle of above-mentioned outward flange portion; Above-mentioned flange portion has the perforation guide hole, and this perforation guide hole possesses the guidance function that above-mentioned center magnetic core is slided; Above-mentioned terminal board is provided with insulation wall, this insulation wall make the above-mentioned spiral that is wound on the above-mentioned bobbin and above-mentioned another root spiral, with above-mentioned closed magnetic circuit magnetic core insulation of surrounding around it, with above-mentioned flange portion opposed part on be provided with location division with above-mentioned center magnetic core location.
Shown in technical scheme 2, be as technical scheme 1 described line filter, it is characterized in that above-mentioned location division is that above-mentioned center magnetic core is moved and detent mechanism during the fixed position to the peripheral direction of above-mentioned bobbin in above-mentioned perforation guide hole; Can correctly carry out the location of center magnetic core.
Shown in technical scheme 3, be as technical scheme 1 described line filter, it is characterized in that, above-mentioned center magnetic core with at least one of opposed of above-mentioned central magnetic pin on have position correction with adding the Ministry of worker; Above-mentioned bobbin is provided with following mechanism, this mechanism have with above-mentioned position correction with adding the corresponding anchor clamps patchhole of the Ministry of worker, insert anchor clamps and above-mentioned position correction is pressurizeed with adding the Ministry of worker from above-mentioned anchor clamps patchhole, above-mentioned center magnetic core is fixed on mechanism on the above-mentioned location division; Improved the normal mode characteristic.
Shown in technical scheme 4, be as technical scheme 1 described line filter, it is characterized in that above-mentioned guide mechanism is recess or corresponding protuberance or the recess that is arranged on the inboard of above-mentioned perforation guide hole of protuberance that is had with above-mentioned center magnetic core; So center magnetic core can be assembled on the bobbin simply, operation improves.
Shown in technical scheme 5, be as technical scheme 1 described line filter, it is characterized in that, above-mentioned center magnetic core with above-mentioned closed magnetic circuit magnetic core non-contacting position on be fixed on the above-mentioned location division; The normal mode stability of characteristics.
Shown in technical scheme 6, it is the manufacture method of each described line filter in a kind of manufacturing technology scheme 1 to 5, operation improves, can assemble simply, it is characterized in that, the central magnetic pin of closed magnetic circuit magnetic core is inserted in the center axial region of above-mentioned bobbin, assemble above-mentioned bobbin, after an above-mentioned spiral and above-mentioned another root reel are on the above-mentioned bobbin, above-mentioned center magnetic core outside-in is inserted in the above-mentioned perforation guide hole of above-mentioned bobbin, after being fixed on above-mentioned closed magnetic circuit magnetic core on the above-mentioned terminal board, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division.
Shown in technical scheme 7, be as the manufacture method of technical scheme 6 described line filters, it is characterized in that, above-mentioned center magnetic core with at least one of opposed of above-mentioned central magnetic pin on have position correction with adding the Ministry of worker; Above-mentioned bobbin have with above-mentioned position correction with adding the corresponding anchor clamps patchhole of the Ministry of worker, come above-mentioned position correction with adding Ministry of worker's pressurization by insert anchor clamps from above-mentioned anchor clamps patchhole, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division; So can assemble simply.
Shown in technical scheme 8, it is manufacture method as technical scheme 6 described line filters, it is characterized in that, by above-mentioned bobbin being pressurizeed with anchor clamps, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division; So can easily assemble.
According to above such the present invention, because flange portion has the perforation guide hole that center magnetic core is inserted from the outside, so can be after coil being wound up on the bobbin mounting center magnetic core, the position offset problem of the center magnetic core in the time of can not reeling.In addition, connect the guidance function of guide hole when possessing the center magnetic core of making and sliding from the outside, and terminal board with flange portion opposed part on have location division with the center magnetic core location, so, can unlike example in the past, position with flexibly keeping center magnetic core, the position stability of center magnetic core, the normal mode stability of characteristics.
In addition, center magnetic core with the both ends of central magnetic pin opposed faces on have position correction with adding the Ministry of worker, and bobbin have with position correction with adding the relative anchor clamps patchhole of the Ministry of worker, anchor clamps are inserted to position correction with adding Ministry of worker's pressurization from the anchor clamps patchhole, center magnetic core peripheral direction to bobbin in connecting guide hole is moved, by the position that is located at the location division fixed center magnetic core on the terminal board, so, the distance of center magnetic core and closed magnetic circuit magnetic core is certain, the normal mode stability of characteristics.
In addition, by with center magnetic core with closed magnetic circuit magnetic core contactless state under be fixed on the location division, improved the normal mode characteristic.
In addition, the guide mechanism that connects guide hole is recess or corresponding protuberance or the recess that is arranged on the inboard that connects guide hole of protuberance that is had with center magnetic core, thus, center magnetic core can be installed on the bobbin simply, has improved operation.
Description of drawings
Fig. 1 is the exploded perspective view of the line filter of one embodiment of the present invention.
Fig. 2 is the stereogram of the line filter that uses in an embodiment of the present invention.
Fig. 3 is the stereogram of the center magnetic core used in an embodiment of the present invention.
Fig. 4 is the stereogram of the center magnetic core used in another embodiment of the present invention.
Fig. 5 has been the coiling that uses the in an embodiment of the present invention front view before the configuration center magnetic core in the bobbin behind the coil.
Fig. 6 is the coiling that uses has in an embodiment of the present invention inserted the cutaway view after the center magnetic core in the bobbin behind the coil.
Fig. 7 is with the cutaway view after in an embodiment of the present invention center magnetic core and bobbin and the terminal board combination.
Fig. 8 is the cutaway view of the line filter that uses in an embodiment of the present invention.
Fig. 9 is the stereogram of line filter in the past.
Figure 10 is the stereogram of the center magnetic core of line filter in the past.
Figure 11 is the stereogram of the bobbin of line filter in the past.
Embodiment
In the flange portion of bobbin, be provided with the perforation guide hole of direct central magnetic core, on bobbin, reel a spiral and another root spiral.Then, the center magnetic core outside-in is inserted in the perforation guide hole, is fixed on the terminal board.Utilize anchor clamps that the position correction of center magnetic core is pressurizeed with adding the Ministry of worker from the anchor clamps patchhole of being located on the bobbin, center magnetic core is moved to the bobbin peripheral direction, be fixed on the location division of being located on the terminal board.
Fig. 1 is the exploded perspective view of the line filter of one embodiment of the present invention.
Fig. 2 is the stereogram of the line filter that uses in an embodiment of the present invention.
Fig. 3 is the stereogram of the center magnetic core used in an embodiment of the present invention.
Fig. 4 is the stereogram of the center magnetic core used in another embodiment of the present invention.
Fig. 5 has been the coiling that uses the in an embodiment of the present invention front view before the configuration center magnetic core in the bobbin behind the coil.
Fig. 6 is the coiling that uses has in an embodiment of the present invention inserted the cutaway view after the center magnetic core in the bobbin behind the coil.
Fig. 7 is the cutaway view after being incorporated in an embodiment of the present invention bobbin and closed magnetic circuit magnetic core set on the terminal board.
Fig. 8 is the cutaway view of the location of the center magnetic core used in an embodiment of the present invention.
[embodiment]
In Fig. 1～Fig. 4, the line filter of present embodiment is provided with: the bobbin 1 that has the through hole 11 of cylinder on the axial region of center, closed magnetic circuit magnetic core 2 with day word shape of the central magnetic pin 21 in the through hole 11 that is inserted into this bobbin 1, be wound on a spiral 13 and another root spiral 14 on this bobbin 1, be inserted into the center magnetic core 3 of the perforation guide hole 18 of the substantial middle that is arranged in this bobbin, the terminal board 4 of this bobbin 1 of support fixation and closed magnetic circuit magnetic core 2, the terminal 51 that plants on this terminal board 4 and a spiral 13 and another root spiral 14 are connected, eliminate the elimination mechanism of common mode (common mode) and the elimination mechanism of elimination normal mode (normal mode).
Bobbin 1 is formed by the 2 semicylindrical volume framves of cutting apart, and has through hole 11 cylindraceous on the axial region of center, and the central magnetic pin 21 of closed magnetic circuit magnetic core 2 of word shape is inserted in this through hole 11 with day.On this bobbin 1, be provided with 2 outward flange portions 12 and the flange portion 15 a spiral 13 and another root spiral 14 cut apart at the substantial middle place, be provided with again a spiral 13 and another root spiral 14 be divided into respectively and cut apart flange part 16 more than 2, be provided with in the outward flange portion 12 when being wound on coil on the bobbin from the stressed gear 17 of external force.
In addition, on bobbin 1, in the flange portion 15 that inserts center magnetic core 3, be provided with and connect guide hole 18.This perforation guide hole 18 has the guidance function that center magnetic core of making 3 is slided.This guidance function is, will be arranged on the corresponding recess 18a of shape of protuberance 31 on the side that is arranged on center magnetic core 3 described later and recess 32 and protuberance 18b to connect in the guide hole 18, and center magnetic core 3 can freely be slided on certain orientation.This perforation guide hole 18 can make center magnetic core 3 slide on certain orientation, but the mechanism that card ends center magnetic core 3 is not set, but after coil being wound on the bobbin 1, uses bonding agent to carry out the location of center magnetic core 3.
In addition, on bobbin 1, be provided with the position correction of location that is used for center magnetic core 3 with adding the corresponding anchor clamps patchhole 1d of the Ministry of worker (bight 33 described later).In the present embodiment, be provided with 2 this anchor clamps patchhole 1d with position correction with adding on the corresponding position of the upside of the Ministry of worker.As another embodiment, also the anchor clamps patchhole 1d that is located on the bobbin 1 can be arranged on the position correction with adding the Ministry of worker transversely.
Closed magnetic circuit magnetic core 2 is day shape of word shape, is formed by magnetic, has central magnetic pin 21 and two ends magnetic pin 22, central magnetic pin 21 chamferings.
Center magnetic core 3 is a magnetic, has the shape of protuberance 31 and recess 32 on two sides, is provided with recess 18a and protuberance 18b in perforation guide hole 18 corresponding with it.Recess 18a and protuberance 31, protuberance 18b and recess 32 are corresponding respectively and form guiding, and center magnetic core 3 can only move freely on certain left and right directions in connecting guide hole 18, inserts slidably.
In addition, center magnetic core 3 is provided with and is used for the bight 33 that positions behind the bobbin 1 inserting.This bight 33 utilizes press fixture to be applied power G from the drawing above-below direction, utilizes this power G to make center magnetic core 3 to horizontal slip.In the present embodiment, this bight 33 use angle initialization with the turning be the C faces of 45 degree as position correction with adding the Ministry of worker, but also can be that angle initialization with the turning is the shape of acute angle or the turning is set at the R shape.In addition, as shown in Figure 4, also groove shapes can be made in bight 33.
In addition, center magnetic core 3 has external 34, rake 35 and opposed facial 36.Opposed facial 36 is opposed of mutual center magnetic core 3 that surround central magnetic pin 21.External 34 is the faces with opposed facial 36 opposition sides, is opposed of two ends magnetic pin 22 sides.The part of rake 35 contacts with external 34, and is located at angularly on the center magnetic core 3.About the angle of this rake 35, the drawing left and right directions of Fig. 7, Fig. 8 is made as horizontal direction, the interior angle that this rake 35 and this horizontal direction are intersected is made as 45 degree in the present embodiment, but also can be acute angle.
If observe the center magnetic core 3 on the right side of Fig. 7, Fig. 8, then on drawing, have 2 these rakes 35.In the center magnetic core 3 on right side, the rake 35 of the downside of drawing above-below direction is described.The rake 35 of this downside uses when making center magnetic core 3 slips and location.This rake 35 is following size: when assembling closed magnetic circuit magnetic core 2 on bobbin 1, insert center magnetic core 3 and being assembled on the terminal board 4, be noncontact with the bobbin supporting part 45 that is located at the maintenance bobbin 1 on the terminal board 4.In addition, this rake 35 and location division 44 butts that are located on the terminal board 4 are with center magnetic core 3 location, so that external 34 is noncontact with two ends magnetic pin 22 when center magnetic core 3 slides into the figure right side of face.And, be that part of its height is than location division 44 height at least with the height setting of the inclination of this rake 35.Above-mentioned explanation is at the center magnetic core 3 of figure right side of face, but for the center magnetic core 3 in drawing left side too.
4 pairs of terminal boards are inserted with the bobbin 1 of center magnetic core 3 and have the closed magnetic circuit magnetic core 2 of being clamped the central magnetic pin 21 in the through hole 11 that is assembled in this bobbin 1 and carry out support fixation.This terminal board 4 is provided with the insulation wall 42 of approximate vertical, this insulation wall 42 make a spiral being wound on the bobbin 1 13 and another root spiral 14, with closed magnetic circuit magnetic core 2 insulation of surrounding around it.This terminal board 4 is provided with the notch 43 corresponding with the flange portion 15 of bobbin 1 on this insulation wall 42, be provided with location division 44 on the part of this notch 43.Owing on this terminal board 4, be provided with insulation wall 42, can make a spiral 13 and another root spiral 14 and 2 insulation of closed magnetic circuit magnetic core.In addition, terminal board 4 is provided with the bobbin supporting part 45 that keeps bobbin 1 at the downside of the notch 43 corresponding with the flange portion 15 of bobbin 1.
In addition, shorter than center from the external 34 of center magnetic core 3 to the outside of insulation wall 42 from central magnetic pin 21 to opposed facial 36 length, and than long to the inboard of insulation wall from the center of central magnetic pin 21.
Then, in this line filter,, the elimination mechanism of eliminating common mode and the elimination mechanism of eliminating normal mode are arranged as the mechanism of eliminating noise.The elimination mechanism of eliminating common mode makes each flux from a spiral 13 and 14 generations of another root spiral equidirectional each other mutually in closed magnetic circuit magnetic core 2, and mutual non-counteracting.In addition, the elimination mechanism of eliminating normal mode makes from each flux of a spiral 13 and 14 generations of another root spiral and flow in the same way in the center magnetic core 3 that is disposed at the bobbin 1 mutually, and in closed magnetic circuit magnetic core 2, oppositely flow the mutual non-counteracting of each flux that in closed magnetic circuit magnetic core 2, is produced mutually.
In the line filter of this spline structure, below its assemble method is described with reference to Fig. 5～Fig. 8.
In Fig. 5, Fig. 6, the central magnetic pin 21 of closed magnetic circuit magnetic core 2 of word shape is inserted in the center axial region of the 2 semicylindrical volume framves of cutting apart with day, with bobbin 1 combination.On this bobbin 1, in an outward flange portion 12, gear 17 is arranged, utilize external force that this gear 17 is applied revolving force, thereby be center rotation with central magnetic pin 21, a spiral 13 and another root spiral 14 are wound on the bobbin 1.Then, center magnetic core 3 outside-ins are inserted in the perforation guide hole 18 of the bobbin 1 behind the coiling.
In Fig. 7, make closed magnetic circuit magnetic core 2 be the drawing horizontal direction, and to make the anchor clamps patchhole 1d on the bobbin 1 be the drawing above-below direction, be fixed on the terminal board 4.The insulation wall 42 that approximate vertical is arranged on this terminal board 4 is projected between the bobbin 1 of the two ends magnetic pin 22 of closed magnetic circuit magnetic core 2 and the coil of having reeled this insulation wall 42.Closed magnetic circuit magnetic core 2 is located under the state that is connected on the insulation wall 42 as shown in Figure 7.Use bonding agent etc. in closed magnetic circuit magnetic core 2 and terminal board 4 fixing.
In Fig. 8, utilize front end from the anchor clamps G that the anchor clamps patchhole 1d of bobbin 1 roughly is overshooting shape, from of bight 33 pressurizations of drawing above-below direction, make center magnetic core 3 direction slip laterally to center magnetic core 3.Center magnetic core 3 moves to the lateral direction of bobbin 1, and rake 35 is connected on the location division of being located on the terminal board 4 44.As another embodiment, the characteristic of utilizing magnetic in the slip in the perforation guide hole 18 of center magnetic core 3 is arranged and attract method that center magnetic core 3 is slided by magnetic attachment or from the outside of bobbin 1 by air.In the present embodiment, as the simplest method, utilize front end at bobbin 1 from the anchor clamps patchhole 1d anchor clamps G of overshooting shape roughly, from drawing above-below direction pushing bight 33, make center magnetic core 3 slide into location division 44.
The portion from the outside 34 of this center magnetic core 3 is shorter to the outside of insulation wall 42 than the center from central magnetic pin 21 to opposed facial 36 length, and than long to the inboard of insulation wall from the center of central magnetic pin 21.
Therefore, after closed magnetic circuit magnetic core 2 being assembled on the bobbin 1, inserting center magnetic core 3 and be assembled on the terminal board 4, outer circumferential surface section 34 moves in the position that makes center magnetic core 3 and fixedly time the and the inboard of the two ends magnetic pin 22 of closed magnetic circuit magnetic core 2 is noncontact, can position.In addition, owing to the protuberance 31 and recess 32, the recess 18a that connects guide hole 18 and the guide mechanism of protuberance 18b that have on center magnetic core of being located at 3, so can reliably center magnetic core be positioned on the bobbin 1.As other embodiment, has the slide mechanism that to the top pressurization of bobbin 1 center magnetic core 3 is slided along the drawing left and right directions by by the smooth anchor clamps of front end, and rake 35 and location division 44 butts are so center magnetic core 3 moves and is positioned to the peripheral direction of bobbin 1.
And center magnetic core 3 is coating adhesive on the notch 43 corresponding with the flange portion 15 of bobbin 1, and above-mentioned closed magnetic circuit magnetic core 2, above-mentioned center magnetic core 3 and above-mentioned bobbin 1 is fixing.
Thus, center magnetic core 3 is certain on making with the position of closed magnetic circuit magnetic core 2, can make the normal mode stability of characteristics.
And, be wound on a spiral 13 on the bobbin 1 and another root spiral 14 and be connected on the terminal of being located on the terminal board 4 51 by welding etc.
Design of the present invention is, the central magnetic pin 21 of closed magnetic circuit magnetic core 2 is inserted in the through hole 11 of bobbin 1 and is assembled on the bobbin 1, and after coil being wound on the bobbin 1, center magnetic core 3 outside-ins are inserted in the perforation guide hole 18 of bobbin 1.
In addition, the guide mechanism when being inserted into center magnetic core 3 outside-ins in the bobbin 1, the recess 32 that is had with center magnetic core 3 or protuberance 31 are corresponding and be provided with protuberance 18b or the recess 18a that is arranged on the inboard that connects guide hole 18.
In addition, fixed mechanism about center magnetic core 3, setting is used with position correction and is added the corresponding anchor clamps patchhole 1d of the Ministry of worker on bobbin 1, anchor clamps are inserted wherein, by the position correction that is inserted into the center magnetic core 3 in the bobbin 1 is mutually opposed to each other pressurizeed with adding the Ministry of worker, lateral direction direct central magnetic core 3 to bobbin 1, on the location division 44 that rake 35 is connected to be located on the terminal board 4, coating adhesive in the notch 43 of bobbin 1 is fixed on above-mentioned center magnetic core 3 on above-mentioned closed magnetic circuit magnetic core 2 and the above-mentioned bobbin 1.
As above such effect of the present invention that constitutes, owing to coil can be wound up on the bobbin 1 back mounting center magnetic core 3, thus the problem of the offset of the center magnetic core 3 can not reel the time, the normal mode stability of characteristics.
In addition, owing to the guide mechanism that has when being inserted into center magnetic core 3 in the bobbin 1, connect in the guide hole 18 so center magnetic core 3 can be inserted into simply, transaction capabilities improves.
In addition, the elastomeric hooking sheet 1c that keeps center magnetic core 3 is not set, can not take place because of hooking sheet 1c be elastomer opened, makes thus center magnetic core 3 offsets laterally along with effluxion situation.
As described above, the present invention is not limited to the foregoing description, can suitably change in the scope that does not break away from design of the present invention and implement.
Claims (8)
1. line filter, possess: bobbin has through hole, and have outward flange portion on the two ends of periphery on the axial region of center; The closed magnetic circuit magnetic core of day word shape is inserted in central magnetic pin in the through hole of above-mentioned bobbin; A spiral and another root spiral are wound on the above-mentioned bobbin; Center magnetic core is inserted in the above-mentioned bobbin; Terminal board keeps above-mentioned closed magnetic circuit magnetic core; It is characterized in that,
Above-mentioned bobbin has the flange portion of an above-mentioned spiral and above-mentioned another root spiral being cut apart and be inserted with above-mentioned center magnetic core in the substantial middle of above-mentioned outward flange portion;
Above-mentioned flange portion has the perforation guide hole, and this perforation guide hole possesses the guidance function that above-mentioned center magnetic core is slided;
Above-mentioned terminal board is provided with insulation wall, this insulation wall make the above-mentioned spiral that is wound on the above-mentioned bobbin and above-mentioned another root spiral, with above-mentioned closed magnetic circuit magnetic core insulation of surrounding around it, with above-mentioned flange portion opposed part on be provided with location division with above-mentioned center magnetic core location.
2, line filter as claimed in claim 1 is characterized in that, above-mentioned location division is that above-mentioned center magnetic core is moved and detent mechanism during the fixed position to the peripheral direction of above-mentioned bobbin in above-mentioned perforation guide hole.
3, line filter as claimed in claim 1 is characterized in that,
Above-mentioned center magnetic core with at least one of opposed of above-mentioned central magnetic pin on have position correction with adding the Ministry of worker;
Above-mentioned bobbin is provided with following mechanism, this mechanism have with above-mentioned position correction with adding the corresponding anchor clamps patchhole of the Ministry of worker, pressurize with adding the Ministry of worker from above-mentioned anchor clamps patchhole insertion anchor clamps and to above-mentioned position correction, above-mentioned center magnetic core is fixed on the above-mentioned location division.
4, line filter as claimed in claim 1 is characterized in that, above-mentioned guide mechanism is recess or corresponding protuberance or the recess that is arranged on the inboard of above-mentioned perforation guide hole of protuberance that is had with above-mentioned center magnetic core.
5, line filter as claimed in claim 1 is characterized in that, above-mentioned center magnetic core with above-mentioned closed magnetic circuit magnetic core non-contacting position on be fixed on the above-mentioned location division.
6, a kind of manufacture method of line filter, it is the manufacture method of making each described line filter in the claim 1 to 5, it is characterized in that, the central magnetic pin of closed magnetic circuit magnetic core is inserted in the center axial region of above-mentioned bobbin, assemble above-mentioned bobbin, after an above-mentioned spiral and above-mentioned another root reel are on the above-mentioned bobbin, above-mentioned center magnetic core outside-in is inserted in the above-mentioned perforation guide hole of above-mentioned bobbin, after being fixed on above-mentioned closed magnetic circuit magnetic core on the above-mentioned terminal board, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division.
7, the manufacture method of line filter as claimed in claim 6 is characterized in that, above-mentioned center magnetic core with at least one of opposed of above-mentioned central magnetic pin on have position correction with adding the Ministry of worker; Above-mentioned bobbin have with above-mentioned position correction with adding the corresponding anchor clamps patchhole of the Ministry of worker, come above-mentioned position correction with adding Ministry of worker's pressurization by insert anchor clamps from above-mentioned anchor clamps patchhole, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division.
8, the manufacture method of line filter as claimed in claim 6, it is characterized in that, by above-mentioned bobbin being pressurizeed with anchor clamps, above-mentioned center magnetic core peripheral direction to above-mentioned bobbin in above-mentioned perforation guide hole is moved, with fixed-site on above-mentioned location division.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP263902/2005 | 2005-09-12 | ||
| JP2005263902A JP4205086B2 (en) | 2005-09-12 | 2005-09-12 | Line filter and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1933059A true CN1933059A (en) | 2007-03-21 |
| CN1933059B CN1933059B (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101280791A Active CN1933059B (en) | 2005-09-12 | 2006-09-01 | Line filter and its manufacturing method |
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| Country | Link |
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| JP (1) | JP4205086B2 (en) |
| CN (1) | CN1933059B (en) |
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| CN101510920B (en) * | 2009-03-13 | 2011-02-16 | 北京佳讯飞鸿电气股份有限公司 | Filling-in type line filter |
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| JP6661360B2 (en) * | 2015-02-18 | 2020-03-11 | 東京パーツ工業株式会社 | Line filter |
| KR102421432B1 (en) | 2016-06-23 | 2022-07-14 | 가부시키가이샤 토킨 | Composite line filter |
| JP6543225B2 (en) * | 2016-06-23 | 2019-07-10 | 株式会社トーキン | Composite line filter |
| JP6873615B2 (en) * | 2016-06-24 | 2021-05-19 | 株式会社トーキン | Composite line filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370573Y (en) * | 1998-12-18 | 2000-03-22 | 潘正友 | Anti electromagnetic interference wave filter |
-
2005
- 2005-09-12 JP JP2005263902A patent/JP4205086B2/en active Active
-
2006
- 2006-09-01 CN CN2006101280791A patent/CN1933059B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510920B (en) * | 2009-03-13 | 2011-02-16 | 北京佳讯飞鸿电气股份有限公司 | Filling-in type line filter |
| CN110931219A (en) * | 2018-09-03 | 2020-03-27 | 无锡东电化兰达电子有限公司 | Coil device |
| CN112927906A (en) * | 2021-01-27 | 2021-06-08 | 上海埃斯凯变压器有限公司 | Filament transformer and high-voltage generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007080951A (en) | 2007-03-29 |
| CN1933059B (en) | 2010-11-17 |
| JP4205086B2 (en) | 2009-01-07 |
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