CN105990014A - Line filter - Google Patents
Line filter Download PDFInfo
- Publication number
- CN105990014A CN105990014A CN201610147615.6A CN201610147615A CN105990014A CN 105990014 A CN105990014 A CN 105990014A CN 201610147615 A CN201610147615 A CN 201610147615A CN 105990014 A CN105990014 A CN 105990014A
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- China
- Prior art keywords
- mentioned
- terminal
- fastener
- iron core
- common mode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Provided is a line filter capable of well locating precision between terminals and being low in height. A box (50) is provided with a first stopper portion (56) and a second stopper portion (57) which are inserted into the upper surfaces (34c, 44c) of a first terminal table and a second terminal table. A common-mode iron core (10) is configured on the upper surfaces of the first stopper portion (56) and the second stopper portion (57). The first stopper portion (56) is used as a first insulation wall configured between the common-mode iron core (10) and a first terminal (36). The second stopper portion (57) is used as a second insulation wall configured between the common-mode iron core (10) and a second terminal (46).
Description
Technical field
The present invention relates to the line filter used in electronic equipment of various.
Background technology
Generally, line filter is mainly for preventing from producing between a pair circuit and earth potential of power circuit
Raw common-mode noise composition and use, the most known circuit having patent documentation 1 as shown in Figure 10
Wave filter.
In line filter as Figure 10, box 150 is highlighted upward by from base plate 156,157
Two panels side plate 158 and intermediate plate 151 structure prominent upward between two coil portions 133,143
Become, be configured to, the inner face side of the base plate 156,157 of box and the I type terminal 136,146 of coil portion
The bottom surface sections contact of side.In line filter as Figure 10, owing to two coil portions are attached at terminal
Closely kept by box, so the position of I type terminal 136,146 will not be occurred to offset, the position between terminal
Precision improves.
Patent documentation 1: JP 2006-32659 publication
But, along with the miniaturization of electronic equipment in recent years, it is desirable to the miniaturization of line filter.
Particularly, in the case of the line filter in being used in power line, it is located at the feelings of power circuit periphery
Condition is more, does not hinder the flowing of air from air cooling fan, it is desirable that low level.
So, if such as I type terminal is changed to L-type terminal and makes this line filter low clearance
Change, then owing to being equipped with common mode iron core on the upper surface of terminal board arranging L-type terminal, so
The front end of the L-type terminal extended outward from the side of terminal board, close to the lower end of common mode iron core, is sent out
The raw problem being difficult to ensure that insulation distance.
Summary of the invention
The present invention want to provide a kind of solve conventional art with the line filter of the problems referred to above.
In order to solve the problems referred to above, the line filter of the present invention is characterised by possessing: the 1st
Pipe, has the 1st tubular body part being wound the 1st spiral, is made up of resin；2nd bobbin, tool
There is the 2nd tubular body part being wound the 2nd spiral, be made up of resin；Box, is positioned at mutually axially
On between the above-mentioned 1st tubular body part and the above-mentioned 2nd tubular body part that arrange concurrently, by resin
Constitute；Common mode iron core, leg is inserted into above-mentioned 1st tubular body part and above-mentioned 2nd tubular body
In portion, form the closed magnetic circuit of common mode；Above-mentioned 1st bobbin has and is located at above-mentioned 1st tubular body part
Axially the 1st terminal board of both sides；Above-mentioned 2nd bobbin has the axle being located at above-mentioned 2nd tubular body part
To the 2nd terminal board of both sides；On above-mentioned 1st terminal board, fixed one end is prominent, another downwards
1st terminal of the L-type that one end extends towards foreign side from side；On above-mentioned 2nd terminal board, fixing
The 2nd terminal of one end L-type that prominent, the other end extends towards foreign side downwards from side；Upper
State the end winding above-mentioned 1st spiral on the other end of the 1st terminal；At another of above-mentioned 2nd terminal
The end of above-mentioned 2nd spiral is wound on end；Above-mentioned box is provided with the 1st fastener and the 2nd fastener；
Above-mentioned 1st fastener is locked on the upper surface of above-mentioned 1st terminal board, and above-mentioned common mode iron core is disposed in
On the upper surface of above-mentioned 1st fastener；Above-mentioned 2nd fastener is locked on the upper of above-mentioned 2nd terminal board
On surface, above-mentioned common mode iron core is disposed on the upper surface of above-mentioned 2nd fastener；Above-mentioned 1st locking
Portion is disposed between above-mentioned common mode iron core and above-mentioned 1st terminal as the 1st insulation wall, and the above-mentioned 2nd
Fastener is disposed between above-mentioned common mode iron core and above-mentioned 2nd terminal as the 2nd insulation wall.
In the line filter of the present invention, as preferred feature, including:
" above-mentioned 1st fastener than the other end of above-mentioned common mode iron core and above-mentioned 1st terminal from the above-mentioned 1st
The side of terminal board extends towards foreign side and arranges；Above-mentioned 2nd fastener is than above-mentioned common mode iron core and upper
The other end stating the 2nd terminal arranges from the side of above-mentioned 2nd terminal board towards foreign side's extension "；
" above-mentioned 1st fastener, when top view, covers the 1st of the one end inserting above-mentioned 1st terminal the
Terminal insertion hole and the periphery of above-mentioned 1st terminal insertion hole；Above-mentioned 2nd fastener when top view,
Cover and insert the 2nd terminal insertion hole of one end of above-mentioned 2nd terminal and above-mentioned 2nd terminal insertion hole
Periphery "；
" above-mentioned common mode iron core contacts on the upper surface of above-mentioned 1st fastener and above-mentioned 2nd fastener
And arrange "；
" on above-mentioned box, it is provided with maintaining part fixing for normal mode iron core；Above-mentioned normal mode ferrum
Core is inserted into and is fixed in above-mentioned maintaining part, forms closed magnetic circuit with above-mentioned common mode iron core ".
According to the line filter of the present invention, the 1st bobbin, the 2nd bobbin and box are difficult to by overall dimensions
Uneven resin formation.
Further, it is locked on by the 1st fastener and the 2nd fastener due to the 1st bobbin and the 2nd bobbin
On box, it is possible to precision between the terminal on two bobbins being respectively provided at split is positioned well.
Additionally, in the line filter of the present invention, owing to being provided with one end to the 1st terminal board and the 2nd
The lower section of terminal board is prominent and the other end extends outward from the side of the 1st terminal board and the 2nd terminal board
L-type terminal, the other end of this L-type terminal is wrapped spiral end, it is possible to make winding
The height low level of the spiral end at one end gone up.
And then, in the line filter of the present invention, the 1st fastener is disposed in as the 1st insulation wall
Between common mode iron core and the 1st terminal, and the 2nd fastener is disposed in common mode ferrum as the 2nd insulation wall
Between core and the 2nd terminal.Therefore, it is possible to while realizing the low level of line filter, protect
Hold the insulation distance of common mode iron core and the other end of L-type terminal.
Thus, the present invention can obtain can realizing low level compared with structure as past case
While, do not increase part number of packages and keep the line filter of insulation distance.
Accompanying drawing explanation
Fig. 1 is the line filter of the finished goods of the 1st embodiment, and (a) is plane graph, and (b) is
(a) to the front view regarding A-A, (c) be (a) to the side view regarding B-B.
Fig. 2 is the bobbin of the split of the 1st embodiment example, and (a) is plane graph, and (b) is front view.
Fig. 3 is the common mode iron core of the 1st embodiment example, and (a) is plane graph, and (b) is front view.
Fig. 4 is the box of the 1st embodiment example, and (a) is plane graph, and (b) is front view.
Fig. 5 is the bobbin of the split by the 1st embodiment example plane graph when being enclosed in box.
Fig. 6 be the common mode iron core 11 representing the 1st embodiment example with the other end 36b of L-type terminal,
The main portion sectional view of Fig. 1 (c) of the insulation distance of 46b, (a) represents at common mode iron core 11 and L
Insulation distance R1, the R3 in the case of insulation wall 56,57, (b) it is provided with between type terminal 36b, 46b
Represent be not provided with between the other end 36b, 46b of common mode iron core 11 and L-type terminal insulation wall 56,
Insulation distance R2, R4 in the case of 57.
Fig. 7 is the line filter of the finished goods of the 2nd embodiment example, and (a) is plane graph, (b)
Be (a) to the front view regarding C-C.
Fig. 8 is the normal mode iron core 60 of the 2nd embodiment example, and (a) is plane graph, and (b) is just
View.
Fig. 9 is the variation before the bobbin of the split by present embodiment example is encased in box, represents
The lower surface of the 1st teat 56a and the 2nd teat 57a of box is provided with protuberance 56d, 57d, at cylinder
The upper surface of the 1st order difference part the 35 and the 2nd order difference part 45 of pipe is provided with the recess chimeric with this protuberance
The structure of (not shown).
Figure 10 is the axonometric chart of the line filter representing past case.
Label declaration
1 line filter
10 common mode iron cores
11 iron cores
The arm of 12 common mode iron cores
The arm lower end of 15 common mode iron cores
The leg of 16 common mode iron cores
17a the 1st terminal insertion hole
17b the 2nd terminal insertion hole
18a the 1st terminal insertion groove
18b the 2nd terminal insertion groove
30 the 1st bobbins
31 the 1st tubular body part
The inner bottom part of 31a the 1st tubular body part
The convex edge of 32 the 1st tubular body part
33 the 1st spirals
34 the 1st terminal boards
The lower surface of 34a the 1st terminal board
The side of 34b the 1st terminal board
The upper surface of 34c the 1st terminal board
35 the 1st order difference parts
36 the 1st terminals (L-type terminal)
One end (one end of L-type terminal) of 36a the 1st terminal
The other end (other end of L-type terminal) of 36b the 1st terminal
40 the 2nd bobbins
The side of 40a the 2nd bobbin
41 the 2nd tubular body part
The inner bottom part of 41a the 2nd tubular body part
The convex edge of 42 the 2nd tubular body part
43 the 2nd spirals
44 the 2nd terminal boards
The lower surface of 44a the 2nd terminal board
The side of 44b the 2nd terminal board
The upper surface of 44c the 2nd terminal board
45 the 2nd order difference parts
46 the 2nd terminals (L-type terminal)
One end (one end of L-type terminal) of 46a the 2nd terminal
The other end (other end of L-type terminal) of 46b the 2nd terminal
50 boxes
51 have corner, end cylindrical portion (maintaining part of normal mode iron core)
52 bottoms (abutting part) having corner, end cylindrical portion
53 sidewalls having corner, end cylindrical portion
56 the 1st fasteners (the 1st insulation wall)
1st teat of 56a the 1st fastener
One end of 56b the 1st fastener
The other end of 56c the 1st fastener
1st protuberance of 56d the 1st fastener
57 the 2nd fasteners (the 2nd insulation wall)
2nd teat of 57a the 2nd fastener
One end of 57b the 2nd fastener
The other end of 57c the 2nd fastener
2nd protuberance of 57d the 2nd fastener
60 normal mode iron cores
The arm of 61 normal mode iron cores
The leg of 64 normal mode iron cores
The prolongation of 80 insulation distances
Detailed description of the invention
Hereinafter, embodiments of the present invention are described illustratively based on accompanying drawing.
(the 1st embodiment example)
In Fig. 1 to Fig. 6, the line filter 1 of present embodiment example have common mode iron core 10,
1 bobbin the 30, the 2nd bobbin 40, box 50 and fixing metalwork.
1st bobbin the 30 and the 2nd bobbin 40 as shown in Figure 1 or 2, is by nonmagnetic thermmohardening
Property two bobbins of split of constituting of resin.1st bobbin 30 has the 1st tubular body part 31, difference
It is located at the 1st convex edge 32 of the both sides of the 1st tubular body part 31, is wound on the 1st tubular body part
The 1st spiral 33 that insulation-coated coppers on 31 is constituted, it is located at the axial of the 1st tubular body part 31
1st terminal board 34 of (Y-direction) both sides and the 1st terminal being fixed on the 1st terminal board 34
36。
2nd bobbin 40 has the 2nd tubular body part 41, is respectively provided at the 2nd tubular body part 41
2nd convex edge 42 of both sides, it is wound on being made up of insulation-coated coppers in the 2nd tubular body part 41
The 2nd spiral 43, be located at the 2nd terminal of axial (Y-direction) both sides of the 2nd tubular body part 41
Platform 44 and the 2nd terminal 46 being fixed on the 2nd terminal board 44.
In the cross section of the 1st tubular body part the 31 and the 2nd tubular body part 41, shape is formed as rectangle, altogether
The cross-sectional shape of the leg 16 of mould iron core is formed as than the 1st tubular body part the 31 and the 2nd tubular body
Rectangle slightly smaller inside the cross section in portion 41.It addition, the 1st bobbin the 30 and the 2nd bobbin 40 can also be by
Thermoplastic resin is formed.
1st terminal 36 by have highlight downwards from the lower surface 34a of the 1st terminal board one end 36a,
With the side 34b from the 1st terminal board axially (Y-direction) upper highlighting by the end of the 1st spiral 33
The L-type terminal of the other end 36b of end winding is constituted.
2nd terminal 46 by have highlight downwards from the lower surface 44a of the 2nd terminal board one end 46a,
With the side 44b from the 2nd terminal board axially (Y-direction) upper highlighting by the end of the 2nd spiral 43
The L-type terminal of the other end 46b of end winding is constituted.
Further, the 1st terminal board 34 is formed with the 1st end of one end 36a being inserted into the 1st terminal
Son inserts hole 17a.Additionally, be formed with one end 46a being inserted into the 2nd terminal on the 2nd terminal board 44
The 2nd terminal insertion hole 17b.
1st terminal insertion hole 17a at top view (from the paper surface of Fig. 2 (a) rearwardly) is
The diameter less than the profile of upper surface 34c of the 1st terminal board, the most through and formed.This
Outward, the 2nd terminal insertion hole 17b at top view (from the paper surface of Fig. 2 (a) rearwardly) is
The diameter less than the profile of upper surface 44c of the 2nd terminal board, the most through and formed.
Additionally, the 1st terminal insertion hole 17a is disposed in the upper surface 34c of the 1st terminal board at top view
Substantial middle, do not contact with the 1st convex edge 32.2nd terminal insertion hole 17b joins at top view
It is located at the substantial middle of the upper surface 44c of the 2nd terminal board, does not contacts with the 2nd convex edge 42.
On the upper surface 34c of the 1st terminal board, it is formed and is connected on the 1st terminal insertion hole 17a
And it is inserted into the 1st terminal insertion groove 18a of the other end 36b of the 1st terminal 36.At the 2nd terminal board
Upper surface 44c on, be formed and be connected on the 2nd terminal insertion hole 17b and be inserted into the 2nd terminal
The 2nd terminal insertion groove 18b of the other end 46b of 46.
1st terminal insertion groove 18a on the upper surface 34c of the 1st terminal board axially (Y-direction)
Formed.2nd terminal insertion groove 18b axially (Y side on the upper surface 44c of the 2nd terminal board
To) formed.
If one end 36a of the 1st terminal is inserted into terminal by the upper surface 34c from the 1st terminal board and inserts
In hand-hole 17a, then one end 36a of the 1st terminal highlights and quilt from the lower surface 34a of the 1st terminal board
Fixing.If one end 46a of the 2nd terminal is inserted into terminal by the upper surface 44c from the 2nd terminal board
Insert in the 17b of hole, then one end 46a of the 2nd terminal from the lower surface 44a of the 2nd terminal board prominent and
Fixed.
If additionally, the other end 36b of the 1st terminal is inserted in the 1st terminal insertion groove 18a,
Then the other end 36b of the 1st terminal by from the side 34b of the 1st terminal board in axially (Y-direction)
Prominent (with reference to Fig. 2 (a)), (with reference to Fig. 2 (b)) is fixed in the central authorities in the Z-direction of the 1st terminal board.
If the other end 46b of the 2nd terminal is inserted in the 2nd terminal insertion groove 18b, then the 2nd terminal
Other end 46b from the side 44b of the 2nd terminal board at axially (Y-direction) prominent (reference Fig. 2
(a)), (with reference to Fig. 2 (b)) is fixed in the central authorities in the Z-direction of the 2nd terminal board.
Further, as shown in Fig. 6 (a), in other end 36b and the 1st locking described later of the 1st terminal
It is provided with gap between portion 56.Additionally, at other end 46b and the 2nd fastener described later of the 2nd terminal
Gap it is provided with between 57.
1st spiral 33 wrapped around 1 layer on the periphery of the 1st tubular body part 31.2nd spiral 43
The periphery of the 2nd tubular body part 41 wrapped around 1 layer.
Two ends of the 1st spiral 33 are electrically connected at the 1st end being located on the 1st bobbin 30 respectively
On the other end 36b of son.Two ends of the 2nd spiral 43 are electrically connected at respectively is located at the 2nd bobbin
On the other end 46b of the 2nd terminal on 40.
The profile of the 1st spiral 33 is disposed in the profile of the convex edge 32 than the 1st bobbin in the inner part.2nd
The profile of spiral 43 is disposed in the profile of the convex edge 42 than the 2nd bobbin in the inner part.
It addition, the 1st spiral the 33 and the 2nd spiral 43 can also be wound as multilamellar respectively.
Common mode iron core 10 is as it is shown on figure 3, be made up of two U-shaped iron cores 11, and this iron core 11 is respectively
There is arm 12 and the leg 16 extended to right angle orientation from the two ends of arm 12.
Box 50 as shown in Figure 4, is made up of nonmagnetic thermoplastic resin, has and has corner, end cylindrical portion
51, the 1st fastener the 56 and the 2nd fastener 57.Specifically, box 50 possesses and has sidewall 53
With bottom 52 have corner, end cylindrical portion 51, from axial (Y-direction) having corner, end cylindrical portion 51
Prominent to the left flat two the 1st fasteners 56 in two ends up and down and from there being corner, end tubular
Two flat 2nd fasteners that the two ends up and down of axial (Y-direction) in portion 51 are prominent to the right
57.The chimb of the 1st bobbin in the gap H1 of two the 1st fasteners 56 and axially (Y-direction)
Length L1 between portion 32 is roughly the same.Additionally, the gap H2 of two the 2nd fasteners 57 and axle
Length L2 between the convex edge 42 of the 2nd bobbin in (Y-direction) is roughly the same.
The upper surface of the 1st fastener 56 is formed as plane.The lower surface of the 1st fastener 56 is formed
For roughly planar, have the 1st of the 1st order difference part 35 locking with the 1st terminal board 34 described later the
Teat 56a.The upper surface of the 2nd fastener 57 is formed as plane, with the upper table of the 1st fastener 56
Face links abreast as isoplanar.The lower surface of the 2nd fastener 57 is shaped generally as plane,
There is the 2nd teat 57a that the 2nd order difference part 45 with the 2nd terminal board 44 described later engages.It addition,
Box 50 can also be formed by thermosetting resin.
The upper surface 34c of the 1st terminal board is at Z compared with the inner bottom part 31a of the 1st tubular body part
The structure of the amount of thickness of the 1st fastener 56 it is cut off on direction.Additionally, the upper surface of the 2nd terminal board
44c is to be cut off the 2nd fastener in z-direction compared with the inner bottom part 41a of the 2nd tubular body part
The structure of the amount of thickness of 57.This is in order in the 1st tubular body part the 31 and the 2nd tubular body part 41
When inserting the leg 16 of two iron cores 11 respectively, by the 1st fastener the 56 and the 2nd fastener 57
Be clamped to arm lower end the 15, the 1st terminal board of common mode iron core 10 and the upper surface 34c of the 2nd terminal board,
Between 44c.
Additionally, on the upper surface 34c of the 1st terminal board, be formed and the 1st of the 1st fastener 56 the
1st order difference part 35 of teat 56a locking.On the upper surface 44c of the 2nd terminal board, be formed with
2nd order difference part 45 of the 2nd teat 57a locking of the 2nd fastener 57.
Additionally, box 50 has corner, end cylindrical portion 51 as it is shown in figure 5, be positioned at the 1st bobbin 30 and
Between 2 bobbins 40.Further, the 1st fastener 56 is locked in the upper surface 34c of the 1st terminal board
On, and the 2nd fastener 57 is locked on the upper surface 44c of the 2nd terminal board.
Specifically, for following so.
The convex edge 32 of the 1st bobbin is inserted in the gap H1 of two the 1st fasteners 56.At two
The gap H2 of the 2nd fastener 57 inserts the convex edge 42 of the 2nd bobbin.Then, the 1st tubular body
Convex edge 32,42 outer end of body and the 2nd tubular body part is connected to the sidewall of corner, end cylindrical portion
On 53.Additionally, the 1st fastener 56 is disposed on the upper surface 34c of the 1st terminal board, the 1st teat
56a and the 1st order difference part 35 are engaged and are fixed by bonding agent.2nd fastener 57 is provided in the 2nd
On the upper surface 44c of terminal board, the 2nd teat 57a and the 2nd order difference part 45 engage and pass through bonding agent
Fixing.Further, corner, end cylindrical portion 51 is had to be positioned at the 1st tubular body part the 31 and the 2nd tubular body
Between portion 41, the 1st tubular body part the 31 and the 2nd tubular body part 41 links the most concurrently
On box 50.1st bobbin the 30 and the 2nd bobbin 40 is fixed on box on the XYZ direction of Fig. 1
On 50.
Further, in the 1st tubular body part the 31 and the 2nd tubular body part 41, two are inserted respectively
The leg 16 of iron core 11, the front end of two legs 16 of iron core 11 is in the 1st tubular body part 31 and
Being mutually butted in 2 tubular body part 41, iron core 11 is formed as O type, forms the closed magnetic circuit of common mode.
In the present invention, as shown in Fig. 6 (a), the 1st fastener 56 is disposed in as the 1st insulation wall
Between the other end 36b of arm lower end the 15 and the 1st terminal of common mode iron core.Additionally, the 2nd fastener
The other end 46b of 57 arm lower end the 15 and the 2nd terminals being disposed in common mode iron core as the 2nd insulation wall
Between.
Specifically, the 1st fastener 56 is at top view (from the paper surface of Fig. 2 (a) rearwardly)
Profile is formed bigger, with the upper surface 34c by the 1st terminal board than the upper surface 34c of the 1st terminal board
The mode all covered arranges.Observe (from Fig. 2's (a) additionally, the 2nd fastener 57 regards in plane
Paper surface is rearwardly) profile forms bigger than the upper surface 44c of the 2nd terminal board, with by the 2nd end
The mode that the upper surface 44c of sub-platform all covers arranges.
If the 1st fastener 56 is equipped on the upper surface 34c of the 1st terminal board, then the 1st locking
One end 56b and the 1st convex edge 32 in portion abut.The other end 56c of the 1st fastener is from the 1st terminal
The side 34b of platform highlights towards foreign side in axially (Y-direction) and arranges.
If the 2nd fastener 57 is arranged on the upper surface 44c of the 2nd terminal board, then the 2nd locking
One end 57b and the 2nd convex edge 42 in portion abut.The other end 57c of the 2nd fastener is from the 2nd terminal
The side 44b of platform highlights towards foreign side in axially (Y-direction) and arranges.
Further, in the 1st tubular body part the 31 and the 2nd tubular body part 41, two ferrum are inserted respectively
The leg 16 of core 11, is formed as O type by iron core 11.Then, the arm lower end 15 of common mode iron core
Whole arrange, by common mode ferrum with the 1st fastener 56 and the upper surface of the 2nd fastener 57
Core 10 is fixed on the 1st bobbin the 30 and the 2nd bobbin 40.
Further, the 1st more prominent than the side 34b of the 1st terminal board fastener 56 is than the arm of common mode iron core
The other end 36b of portion the 12 and the 1st terminal extends outward in axially (Y-direction) and arranges.Than the
The 2nd prominent for the side 44b of 2 terminal boards fastener 57 is than arm the 12 and the 2nd terminal of common mode iron core
Other end 46b extend outward in axially (Y-direction) and arrange.
Fixing metalwork is formed as U-shaped, with from axially folder to make the docking of two iron cores 11 touch
The mode two iron cores 11 installs (not shown) from the 40a side, side of the 2nd bobbin 40.
So, this example possess have wrapped around the 1st spiral 33 the 1st tubular body part 31 by setting
Fat constitute the 1st bobbin 30, have wrapped around the 2nd spiral 43 the 2nd tubular body part 41 by
The 2nd bobbin 40 that resin is constituted, it is positioned at the most parallel mutually the 1st tubular body part 31 arranged
And the box 50 being made up of resin and leg 16 between the 2nd tubular body part 41 are inserted into the 1st
The common mode iron core 10 of the closed magnetic circuit of the formation common mode in tubular body part the 31 and the 2nd tubular body part 41.
Further, the 1st bobbin 30 has the 1st end of the axial both sides being located at the 1st tubular body part 31
Sub-platform 34.
Additionally, the 2nd bobbin 40 has the 2nd end of the axial both sides being located at the 2nd tubular body part 41
Sub-platform 44.
Additionally, on the 1st terminal board 34, fixed one end 36a highlights and other end 36b downwards
1st terminal 36 of the L-type extended towards foreign side from side.
Additionally, on the 2nd terminal board 44, fixed one end 46a highlights and other end 46b downwards
2nd terminal 46 of the L-type extended towards foreign side from side.
Additionally, wrapped around the end of the 1st spiral 33 on the other end 36b of the 1st terminal.
Additionally, wrapped around the end of the 2nd spiral 43 on the other end 46b of the 2nd terminal.
Additionally, be provided with the 1st fastener the 56 and the 2nd fastener 57 on box 50.
Additionally, the 1st fastener 56 is locked on the upper surface 34c of the 1st terminal board, common mode iron core 10
It is disposed on the upper surface of the 1st fastener 56.
Additionally, the 2nd fastener 57 is locked on the upper surface 44c of the 2nd terminal board, common mode iron core 10
It is disposed on the upper surface of the 2nd fastener 57.
Additionally, the 1st fastener 56 is disposed in common mode iron core the 10 and the 1st terminal as the 1st insulation wall
Between 36, additionally, the 2nd fastener 57 is disposed in common mode iron core 10 and the 2nd as the 2nd insulation wall
Between terminal 46.
According to the line filter of this example, the 1st bobbin the 30, the 2nd bobbin 40 and box 50 are by profile chi
The very little resin formation being difficult to deviation.
Further, engaged by the 1st fastener the 56 and the 2nd due to the 1st bobbin the 30 and the 2nd bobbin 40
Portion 57 is locked on box 50, it is possible to by essence between the terminal on two bobbins being respectively provided at split
Degree positions well.
Additionally, in I type terminal as past case, due at the I highlighted downwards from terminal board
Spiral end it is wound around on type terminal, so this twining amount of line filter high altitude.On the other hand,
In this example, one end is prominent downwards and L-type terminal that the other end extends outward from terminal board side,
By being wound around spiral end on the other end of this L-type terminal, it is possible to the height on one end will be wrapped in
Amount carries out low level.
But, if I type terminal to be changed to L-type terminal by this line filter low level,
Then owing to being equipped with common mode iron core on the upper surface of terminal board being equipped with L-type terminal, so from end
The other end of the L-type terminal that the side of sub-platform extends outward is close with the lower end of common mode iron core, occurs
The problem being difficult to ensure that insulation distance.So, this example has following such structure.
1st fastener and the 2nd fastener are locked on the upper surface of the 1st terminal board and the 2nd terminal board.
Additionally, common mode iron core is disposed on the upper surface of the 1st fastener and the 2nd fastener.
Additionally, the 1st fastener is disposed between common mode iron core and the 1st terminal as the 1st insulation wall.
Additionally, the 2nd fastener is disposed between common mode iron core and the 2nd terminal as the 2nd insulation wall.
Therefore, it is possible to keep common mode iron core and L while making the line filter low level of this example
The insulation distance of the other end of type terminal.
So, this example can obtain compared with structure as past case in the precision maintaining terminal position
While, do not increase part and count and the line filter that keeps insulation distance, low level.
Additionally, in this example, the 1st fastener 56 is disposed in the arm of common mode iron core as the 1st insulation wall
Between the other end 36b of subordinate's end the 15 and the 1st terminal.Additionally, the 2nd fastener 57 is as the 2nd
Insulation wall is disposed between the other end 46b of arm lower end the 15 and the 2nd terminal of common mode iron core.
Then, it is equipped between the other end 36b of arm lower end the 15 and the 1st terminal of common mode iron core
Insulation distance (R1 of Fig. 6 (a)) in the case of 1st insulation wall is than the arm at common mode iron core
The insulation in the case of arranging the 1st insulation wall is not had between the other end 36b of lower end the 15 and the 1st terminal
The distance that distance (R2 of Fig. 6 (b)) extends.Additionally, the arm lower end 15 of common mode iron core with
Insulation distance (the Fig. 6 in the case of the 2nd insulation wall it is equipped with between the other end 46b of the 2nd terminal
The R3 of (a)) be than the other end 46b at arm lower end the 15 and the 2nd terminal of common mode iron core between
There is no the distance that the insulation distance (R4 of Fig. 6 (b)) in the case of arranging the 2nd insulation wall extends.
The R1 of Fig. 6 (a) represents and joins between arm lower end the 15 and the 2nd terminal 43 of common mode iron core
It is provided with the other end 46b of arm lower end the 15 and the 2nd terminal of common mode iron core in the case of insulation wall 57
Insulation distance.
The R3 of Fig. 6 (a) represents and joins between arm lower end the 15 and the 2nd terminal 43 of common mode iron core
It is provided with in the case of insulation wall 57, the other end of common mode iron core arm lower end the 15 and the 2nd terminal
The insulation distance of 46b.
The R2 of Fig. 6 (b) represents do not have between arm lower end the 15 and the 2nd terminal 43 of common mode iron core
Have arrange in the case of insulation wall 57, common mode iron core arm lower end the 15 and the 2nd terminal another
The insulation distance of end 46b.
The R4 of Fig. 6 (b) represents do not have between arm lower end the 15 and the 2nd terminal 43 of common mode iron core
Have arrange in the case of insulation wall 57, common mode iron core arm lower end the 15 and the 2nd terminal another
The insulation distance of end 46b.
(about insulation distance R1, R2)
In Fig. 6 (a), the 1st fastener the 56 and the 2nd fastener 57 quilt arranged as insulation wall
It is disposed in arm lower end the 15, the 1st terminal and the other end 36b, 46b of the 2nd terminal of common mode iron core
Between, and than arm lower end the 15, the 1st terminal of common mode iron core and the other end 36b of the 2nd terminal,
46b extends outward and arranges.Then, arm lower end the 15 and the 1st terminal and the 2nd of common mode iron core
The insulation distance R1 of the other end 36b, 46b of terminal is by the 1st fastener arranged as insulation wall
56 and the 2nd fastener 57 and be extended, formed than the insulation not arranged in the case of insulation wall away from
From R2 length.
(about insulation distance R3, R4)
Additionally, at the top view (on the right side of the left sides of paper) of Fig. 6 (a), the 1st fastener
56 and the 2nd fastener 57 is by the 1st terminal insertion hole 17a, the 2nd terminal insertion hole 17b, the 1st end
Son inserts the periphery of hole 17a and the 2nd terminal insertion hole 17b and covers.
Specifically, at the top view of Fig. 6 (a), the 1st fastener 56 is by the 1st terminal insertion hole
17a and the periphery as its adjacent open end cover, and the 2nd terminal is inserted by the 2nd fastener 57
Hole 17b and the periphery as its adjacent open end cover.
Then, at the top view of Fig. 6 (a), by the 1st fastener the 56 and the 1st terminal insertion hole
The lap of the periphery of 17a forms the prolongation 80 of insulation distance, by the 2nd fastener 57 and the
The lap of the periphery of 2 terminal insertion hole 17b forms the prolongation 80 of insulation distance.
Thus, arm lower end the 15, the 1st terminal of common mode iron core and the other end 36b of the 2nd terminal,
The insulation distance R3 of 46b is extended by above-mentioned lap (prolongation), formed ratio does not has
Form the insulation distance R4 length in the case of insulation wall.
So, this example is compared with structure as past case, it is possible to does not increase and decrease part number of packages and makes common mode
The insulation distance of the other end of iron core and the 1st terminal and the 2nd terminal is elongated.It addition, insulation distance R1
The most identical with insulation distance R3.
Additionally, on the upper surface of the 1st fastener the 56 and the 2nd fastener 57, contact is equipped altogether
Mould iron core 10.Thus, the 1st fastener the 56 and the 2nd fastener 57 formed as insulation wall is total to
Arm lower end the 15, the 1st terminal board of mould iron core and upper surface 34c, 44c clamping of the 2nd terminal board.
Thus, the 1st fastener the 56 and the 2nd fastener 57 is securely fixed on box 50, between terminal not
Easily position deviation.
Additionally, whole contact of the arm lower end 15 of common mode iron core blocks at the 1st fastener the 56 and the 2nd
Arrange on the upper surface of stop 57.Therefore, the 1st fastener the 56 and the 2nd fastener 57 is by more firm
Admittedly be fixed on box 50, so being difficult to position skew between terminal, and when the circuit of the present invention is filtered
When ripple device is installed on circuit substrate, it is possible to suppress the deformation of common mode iron core to improve reliability as far as possible.
(the 2nd embodiment example)
Then, the line filter of the 2nd embodiment example for the present invention is described by Fig. 7 to Fig. 9
The structure of device.
In Fig. 7 to Fig. 9, give identical for the parts identical with the parts in Fig. 1 to Fig. 6
Label, illustrates about these component omission.
Common-mode noise can be removed by the line filter of the 1st embodiment example by arranging common mode iron core 10
Go, but the line filter of the 2nd embodiment example is by adding normal mode to the 1st embodiment example
Iron core 60, it is possible to by both removings of common-mode noise and normal mode noise.
Normal mode iron core 60 as shown in Figure 8, is formed as having two arms 61 and 1 leg 64
T-shaped.
The opening having corner, end cylindrical portion (maintaining part) 51 is formed as and has been inserted into corner, end cylindrical portion
The profile of the leg 64 of the normal mode iron core in 51 is roughly the same.
The opening direction having corner, end cylindrical portion 51 is formed as and the 1st tubular body part 31 and the 2nd
The direction axial at a right angle of shape body part 41.
Corner, end cylindrical portion 51 is had to have bottom (abutting part) 52.Further, if by normal mode ferrum
Core 60 is inserted in maintaining part 51, then the leg 64 of normal mode iron core is connected on abutting part 52
And fixed.
Further, in this example, the leg 16 of common mode iron core is provided in the 1st tubular body part 31 He
In 2nd tubular body part 41, iron core 11 is formed as O type, if normal mode iron core 60 is inserted into
It is connected on abutting part 52 in having corner, end cylindrical portion 51, then makes normal mode iron core 60 close
In common mode iron core 10, it is possible to obtain normal mode characteristic.
So, box 50 is provided with by the fixing maintaining part 51 of normal mode iron core 60, normal mode
Iron core 60 is inserted into be fixed in maintaining part 51, forms closed magnetic circuit with common mode iron core 10.
Thus, the 2nd embodiment example can suppress common-mode noise with normal in 1 line filter
Modal noise, it is possible to be conducive to carrying the miniaturization of the electronic equipment of the line filter of this example.
The present invention is not limited to above embodiment example, in the range of its purport can various respectively
The change of sample ground.
In the above description, common mode iron core 10 contacts at the 1st fastener the 56 and the 2nd fastener 57
Upper surface on and arrange, but be not limited to this.As long as being able to ensure that the insulation distance of regulation, it is possible to
To use the 1st fastener the 56 and the 2nd fastener 57 of thinning above-mentioned embodiment example, by common mode ferrum
The arm lower end 15 of core arranges non-contactly with the upper surface of the 1st fastener the 56 and the 2nd fastener 57.
Additionally, in the above description, the other end 36b of the 1st terminal and the 1st fastener 56 it
Between be provided with gap, between the other end 46b and the 2nd fastener 57 of the 2nd terminal, be provided with gap, but
It is not limited to this.As long as being able to ensure that the insulation distance of regulation, it is also possible to be the other end of the 1st terminal
36b and the contact of the 1st fastener 56 are arranged, the other end 46b of the 2nd terminal and the 2nd fastener 57
Contact is arranged.
Additionally, in the above description, the 1st fastener the 56 and the 2nd fastener 57 is disposed in the 1st
Fix at order difference part the 35 and the 2nd order difference part 45 and by bonding agent, but as shown in Figure 9, it is also possible to
The lower surface of the 1st teat 56a of the 1st fastener and the 2nd teat 57a of the 2nd fastener sets
Put the 1st protuberance 56d and the 2nd protuberance 57d, by chimeric with this protuberance 56d, 57d not shown recessed
Portion is located on the 1st order difference part 35 and the 2nd order difference part 45 and makes it concavo-convex chimeric.
Claims (5)
1. a line filter, it is characterised in that
Possess:
1st bobbin, has the 1st tubular body part being wound the 1st spiral, is made up of resin；
2nd bobbin, has the 2nd tubular body part being wound the 2nd spiral, is made up of resin；
Box, is positioned at the above-mentioned 1st tubular body part and above-mentioned 2nd arranged the most parallel
Between shape body part, it is made up of resin；And
Common mode iron core, leg is inserted into above-mentioned 1st tubular body part and above-mentioned 2nd tubular body part
In, form the closed magnetic circuit of common mode；
Above-mentioned 1st bobbin has the 1st terminal board of the axial both sides being located at above-mentioned 1st tubular body part；
Above-mentioned 2nd bobbin has the 2nd terminal board of the axial both sides being located at above-mentioned 2nd tubular body part；
On above-mentioned 1st terminal board, be fixed with one end prominent, other end downwards from side towards
1st terminal of the L-type of Fang Yanshen；
On above-mentioned 2nd terminal board, be fixed with one end prominent, other end downwards from side towards
2nd terminal of the L-type of Fang Yanshen；
The other end of above-mentioned 1st terminal winds the end of above-mentioned 1st spiral；
The other end of above-mentioned 2nd terminal winds the end of above-mentioned 2nd spiral；
Above-mentioned box is provided with the 1st fastener and the 2nd fastener；
Above-mentioned 1st fastener is locked on the upper surface of above-mentioned 1st terminal board, and above-mentioned common mode iron core is joined
It is located on the upper surface of above-mentioned 1st fastener；
Above-mentioned 2nd fastener is locked on the upper surface of above-mentioned 2nd terminal board, and above-mentioned common mode iron core is joined
It is located on the upper surface of above-mentioned 2nd fastener；
Above-mentioned 1st fastener is disposed in above-mentioned common mode iron core and above-mentioned 1st terminal as the 1st insulation wall
Between, and above-mentioned 2nd fastener is disposed in above-mentioned common mode iron core and the above-mentioned 2nd as the 2nd insulation wall
Between terminal.
2. line filter as claimed in claim 1, it is characterised in that
Above-mentioned 1st fastener than the other end of above-mentioned common mode iron core and above-mentioned 1st terminal from the above-mentioned 1st
The side of terminal board extends towards foreign side and arranges；
Above-mentioned 2nd fastener than the other end of above-mentioned common mode iron core and above-mentioned 2nd terminal from the above-mentioned 2nd
The side of terminal board extends towards foreign side and arranges.
3. line filter as claimed in claim 2, it is characterised in that
Above-mentioned 1st fastener, when top view, covers the 1st of the one end inserting above-mentioned 1st terminal the
Terminal insertion hole and the periphery of above-mentioned 1st terminal insertion hole；
Above-mentioned 2nd fastener, when top view, covers the 2nd of the one end inserting above-mentioned 2nd terminal the
Terminal insertion hole and the periphery of above-mentioned 2nd terminal insertion hole.
4. line filter as claimed in claim 3, it is characterised in that
Above-mentioned common mode iron core contacts on the upper surface of above-mentioned 1st fastener and above-mentioned 2nd fastener
Arrange.
5. line filter as claimed in claim 4, it is characterised in that
On above-mentioned box, it is provided with maintaining part fixing for normal mode iron core；
Above-mentioned normal mode iron core is inserted into and is fixed in above-mentioned maintaining part, is formed with above-mentioned common mode iron core
Closed magnetic circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-051727 | 2015-03-16 | ||
| JP2015051727A JP6403614B2 (en) | 2015-03-16 | 2015-03-16 | Line filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105990014A true CN105990014A (en) | 2016-10-05 |
| CN105990014B CN105990014B (en) | 2019-11-01 |
Family
ID=56982577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610147615.6A Expired - Fee Related CN105990014B (en) | 2015-03-16 | 2016-03-15 | Line filter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6403614B2 (en) |
| CN (1) | CN105990014B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6661360B2 (en) * | 2015-02-18 | 2020-03-11 | 東京パーツ工業株式会社 | Line filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004193331A (en) * | 2002-12-11 | 2004-07-08 | Tdk Corp | Common mode filter and its manufacturing method |
| JP2008244247A (en) * | 2007-03-28 | 2008-10-09 | Fdk Corp | Wire component |
| CN203300366U (en) * | 2013-05-31 | 2013-11-20 | 广州金升阳科技有限公司 | Common-mode filter inductor |
| CN104637653A (en) * | 2013-11-13 | 2015-05-20 | 三星电机株式会社 | Common mode filter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01208819A (en) * | 1988-02-17 | 1989-08-22 | Matsushita Electric Ind Co Ltd | Line filter |
| JP3487693B2 (en) * | 1995-09-19 | 2004-01-19 | Ｎｅｃトーキン株式会社 | Bobbin fixing stand and transformer coil using the same |
| JP2006032659A (en) * | 2004-07-16 | 2006-02-02 | Matsushita Electric Ind Co Ltd | Line filter |
| JP4191671B2 (en) * | 2004-12-13 | 2008-12-03 | Ｔｄｋ株式会社 | Common mode choke coil |
| JP2008005171A (en) * | 2006-06-21 | 2008-01-10 | Matsushita Electric Works Ltd | Line filter with base |
-
2015
- 2015-03-16 JP JP2015051727A patent/JP6403614B2/en not_active Expired - Fee Related
-
2016
- 2016-03-15 CN CN201610147615.6A patent/CN105990014B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004193331A (en) * | 2002-12-11 | 2004-07-08 | Tdk Corp | Common mode filter and its manufacturing method |
| JP2008244247A (en) * | 2007-03-28 | 2008-10-09 | Fdk Corp | Wire component |
| CN203300366U (en) * | 2013-05-31 | 2013-11-20 | 广州金升阳科技有限公司 | Common-mode filter inductor |
| CN104637653A (en) * | 2013-11-13 | 2015-05-20 | 三星电机株式会社 | Common mode filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016171283A (en) | 2016-09-23 |
| CN105990014B (en) | 2019-11-01 |
| JP6403614B2 (en) | 2018-10-10 |
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