CN105990014B - Line filter - Google Patents
Line filter Download PDFInfo
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- CN105990014B CN105990014B CN201610147615.6A CN201610147615A CN105990014B CN 105990014 B CN105990014 B CN 105990014B CN 201610147615 A CN201610147615 A CN 201610147615A CN 105990014 B CN105990014 B CN 105990014B
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- 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
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- 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
There is provided one kind will can precisely position and the line filter of low level between terminal.1st fastener (56) and 2nd fastener (57) are equipped on box (50).1st fastener (56) and 2nd fastener (57) are inserted on the upper surface (34c, 44c) of the 1st terminal board and the 2nd terminal board, and common mode iron core (10) is disposed on the upper surface of 1st fastener (56) and 2nd fastener (57).1st fastener (56) is disposed between common mode iron core (10) and the 1st terminal (36) as the 1st insulation wall, and 2nd fastener (57) is disposed between common mode iron core (10) and the 2nd terminal (46) as the 2nd insulation wall.
Description
Technical field
The present invention relates to the line filters used in electronic equipment of various.
Background technique
In general, line filter is mainly for preventing the common mode generated between a pair of of the route and ground potential of power circuit from making an uproar
Sound ingredient and use, such as it has been known that there is the line filters of patent document 1 as shown in Figure 10.
In the line filter as Figure 10, box 150 is by from the two panels side plate 158 outstanding upwards of bottom plate 156,157
And from intermediate plate 151 outstanding is constituted upwards between two coil parts 133,143, be configured to, the bottom plate 156,157 of box it is interior
Surface side is contacted with the bottom surface sections of the I type terminal 136 of coil part, 146 sides.In the line filter as Figure 10, due to two
Coil part is kept near terminal by box, so the positional shift of I type terminal 136,146 will not occur, the position essence between terminal
Degree improves.
Patent document 1: special open 2006-32659 bulletin
But with the miniaturization of electronic equipment in recent years, it is desirable to the miniaturization of line filter.In particular, with
In the case where line filter in power supply line, the case where being located at power circuit periphery, is more, does not hinder from air-cooled fan
Air flowing, it is desirable that low level.
So for example, if I type terminal is changed to L-type terminal and makes the line filter low level, then due to
It is arranged on the upper surface of the terminal board of L-type terminal and is equipped with common mode iron core, so the L extended outward from the side of terminal board
The front end of type terminal is close to the lower end of common mode iron core, the problem of being difficult to ensure insulation distance.
Summary of the invention
The present invention wants to provide a kind of line filter for solving the above problem that conventional art has.
To solve the above-mentioned problems, line filter of the invention is characterized in that having: the 1st bobbin, has and is wound
1st tubular body part of the 1st spiral, is made of resin；2nd bobbin has the 2nd tubular body part for being wound the 2nd spiral, by
Resin is constituted；Box, positioned at the above-mentioned 1st tubular body part and above-mentioned 2nd tubular body part being mutually concurrently arranged in the axial direction
Between, it is made of resin；Common mode iron core, leg are inserted into above-mentioned 1st tubular body part and above-mentioned 2nd tubular body part,
Form the closed magnetic circuit of common mode；Above-mentioned 1st bobbin has the 1st terminal board of the axial sides for being located at above-mentioned 1st tubular body part；On
State the 2nd terminal board that the 2nd bobbin has the axial sides for being located at above-mentioned 2nd tubular body part；On above-mentioned 1st terminal board, Gu
Determine the 1st terminal of the L-type that one end protrudes downwards, the other end extends from side towards foreign side；On above-mentioned 2nd terminal board,
2nd terminal of the L-type that fixed one end is prominent downwards, the other end extends from side towards foreign side；In the another of above-mentioned 1st terminal
The end of above-mentioned 1st spiral is wound on one end；The end of above-mentioned 2nd spiral is wound on the other end of above-mentioned 2nd terminal；Upper
Box is stated equipped with 1st fastener and 2nd fastener；Above-mentioned 1st fastener is locked on the upper surface of above-mentioned 1st terminal board, on
Common mode iron core is stated to be disposed 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 fastener is matched as the 1st insulation wall
Be located between above-mentioned common mode iron core and above-mentioned 1st terminal, and above-mentioned 2nd fastener be disposed in as the 2nd insulation wall it is above-mentioned total
Between mould iron core and above-mentioned 2nd terminal.
In line filter of the invention, feature more preferably, comprising:
" above-mentioned 1st fastener is than the other end of above-mentioned common mode iron core and above-mentioned 1st terminal from the side of above-mentioned 1st terminal board
It faces and extends and be arranged outward；Above-mentioned 2nd fastener is than the other end of above-mentioned common mode iron core and above-mentioned 2nd terminal from above-mentioned
The side of 2 terminal boards extends towards foreign side and is arranged "；
" above-mentioned 1st fastener in plan view, covering be inserted into one end of above-mentioned 1st terminal the 1st terminal insertion hole and
The periphery of above-mentioned 1st terminal insertion hole；In plan view, one end of above-mentioned 2nd terminal is inserted into covering to above-mentioned 2nd fastener
The periphery of 2nd terminal insertion hole and above-mentioned 2nd terminal insertion hole "；
" above-mentioned common mode iron core contact is arranged on the upper surface of above-mentioned 1st fastener and above-mentioned 2nd fastener "；
" on above-mentioned box, equipped with the maintaining part that normal mode iron core is fixed；Above-mentioned normal mode iron core is inserted into fixation
In above-mentioned maintaining part, closed magnetic circuit is formed with above-mentioned common mode iron core ".
Line filter according to the present invention, the 1st bobbin, the 2nd bobbin and box are not easy non-uniform resin by outer dimension
It is formed.
Also, since the 1st bobbin and the 2nd bobbin are locked on box by 1st fastener and 2nd fastener, so can
It will precisely be positioned between the terminal being respectively provided on two seperated bobbins.
In addition, in line filter of the invention, due to being equipped with one end to the lower section of the 1st terminal board and the 2nd terminal board
Prominent and L-type terminal that the other end extends outward from the side of the 1st terminal board and the 2nd terminal board, in the another of the L-type terminal
Spiral end is wrapped on end, so the height low level of the spiral end in winding at one end can be made.
In turn, in line filter of the invention, 1st fastener is disposed in common mode iron core and the 1st as the 1st insulation wall
Between terminal, and 2nd fastener is disposed between common mode iron core and the 2nd terminal as the 2nd insulation wall.It therefore, can be in reality
While the low level of existing line filter, the insulation distance of the other end of common mode iron core and L-type terminal is kept.
As a result, the present invention can obtain compared with structure as previous example can while realizing low level, no
Increase part number of packages and keeps the line filter of insulation distance.
Detailed description of the invention
Fig. 1 is the line filter of the finished goods of the 1st embodiment, and (a) of Fig. 1 is plan view, and (b) of Fig. 1 is Fig. 1
(a) the front view to view A-A, (c) of Fig. 1 are the side views to view B-B of Fig. 1 (a).
Fig. 2 is the seperated bobbin of the 1st embodiment example, and (a) of Fig. 2 is plan view, and (b) of Fig. 2 is front view.
Fig. 3 is the common mode iron core of the 1st embodiment example, and (a) of Fig. 3 is plan view, and (b) of Fig. 3 is front view.
Fig. 4 is the box of the 1st embodiment example, and (a) of Fig. 4 is plan view, and (b) of Fig. 4 is front view.
Fig. 5 is plan view when the seperated bobbin of the 1st embodiment example is enclosed in box.
Fig. 6 is the insulation distance for indicating the other end 36b, 46b of common mode iron core 11 and L-type terminal of the 1st embodiment example
Fig. 1 (c) main cross-sectional view of a main portion, (a) of Fig. 6 indicates to be equipped with insulation between common mode iron core 11 and L-type terminal 36b, 46b
(b) of insulation distance R1, R3 in the case where wall 56,57, Fig. 6 indicate the other end 36b of common mode iron core 11 and L-type terminal,
Insulation distance R2, R4 in the case where insulation wall 56,57 are not provided between 46b.
Fig. 7 is the line filter of the finished goods of the 2nd embodiment example, and (a) of Fig. 7 is plan view, and (b) of Fig. 7 is Fig. 7
(a) to view C-C front view.
Fig. 8 is the normal mode iron core 60 of the 2nd embodiment example, and (a) of Fig. 8 is plan view, and (b) of Fig. 8 is front view.
Fig. 9 is the variation before the seperated bobbin of present embodiment example is encased in box, and (a) of Fig. 9 is to indicate
(b) of figure, Fig. 9 on the lower surface of the 1st protrusion 56a and the 2nd protrusion 57a of box equipped with protrusion 56d, 57d is indicated in cylinder
1st order difference part 35 of pipe and the upper surface of the 2nd order difference part 45 are equipped with the structure of the recess portion (not shown) chimeric with the protrusion
Figure.
Figure 10 is the perspective view for indicating the line filter of previous example.
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
The 1st terminal insertion hole of 17a
The 2nd terminal insertion hole of 17b
The 1st terminal insertion groove of 18a
The 2nd terminal insertion groove of 18b
30 the 1st bobbins
31 the 1st tubular body part
The interior bottom of the 1st tubular body part of 31a
The convex edge of 32 the 1st tubular body part
33 the 1st spirals
34 the 1st terminal boards
The lower surface of the 1st terminal board of 34a
The side of the 1st terminal board of 34b
The upper surface of the 1st terminal board of 34c
35 the 1st order difference parts
36 the 1st terminals (L-type terminal)
One end (one end of L-type terminal) of the 1st terminal of 36a
The other end (other end of L-type terminal) of the 1st terminal of 36b
40 the 2nd bobbins
The side of the 2nd bobbin of 40a
41 the 2nd tubular body part
The interior bottom of the 2nd tubular body part of 41a
The convex edge of 42 the 2nd tubular body part
43 the 2nd spirals
44 the 2nd terminal boards
The lower surface of the 2nd terminal board of 44a
The side of the 2nd terminal board of 44b
The upper surface of the 2nd terminal board of 44c
45 the 2nd order difference parts
46 the 2nd terminals (L-type terminal)
One end (one end of L-type terminal) of the 2nd terminal of 46a
The other end (other end of L-type terminal) of the 2nd terminal of 46b
50 boxes
51 have bottom quadrangle cylindrical portion (maintaining part of normal mode iron core)
52 have the bottom (abutting part) of bottom quadrangle cylindrical portion
53 have the side wall of bottom quadrangle cylindrical portion
56 1st fasteners (the 1st insulation wall)
1st protrusion of 56a 1st fastener
One end of 56b 1st fastener
The other end of 56c 1st fastener
1st protrusion of 56d 1st fastener
57 2nd fasteners (the 2nd insulation wall)
2nd protrusion of 57a 2nd fastener
One end of 57b 2nd fastener
The other end of 57c 2nd fastener
2nd protrusion of 57d 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
Specific embodiment
Hereinafter, illustratively illustrating embodiments of the present invention based on attached drawing.
(the 1st embodiment example)
In Fig. 1 into Fig. 6, the line filter 1 of present embodiment example has common mode iron core 10, the 1st bobbin 30, the 2nd
Pipe 40, box 50 and fixed metalwork.
1st bobbin 30 and the 2nd bobbin 40 are the fissions being made of nonmagnetic thermosetting resin as shown in Figure 1 or 2
Two bobbins.1st bobbin 30 have the 1st tubular body part 31, the two sides for being respectively provided at the 1st tubular body part 31 it is the 1st convex
The 1st spiral 33 that edge 32, insulation-coated coppers in the 1st tubular body part 31 are constituted is located at the 1st tubular body part
1st terminal board 34 of 31 axial direction (Y-direction) two sides and the 1st terminal 36 being fixed on the 1st terminal board 34.
2nd bobbin 40 has the 2nd convex edge of the 2nd tubular body part 41, the two sides for being respectively provided at the 2nd tubular body part 41
42, the 2nd spiral 43 being made of insulation-coated coppers in the 2nd tubular body part 41, be located at the 2nd tubular body part 41
Axial direction (Y-direction) two sides the 2nd terminal board 44 and the 2nd terminal 46 that is fixed on the 2nd terminal board 44.
Shape is formed as rectangle, the leg 16 of common mode iron core in the section of 1st tubular body part 31 and the 2nd tubular body part 41
Cross-sectional shape be formed as the rectangle more slightly smaller than on the inside of the section of the 1st tubular body part 31 and the 2nd tubular body part 41.In addition,
1st bobbin 30 and the 2nd bobbin 40 can also be formed by thermoplastic resin.
1st terminal 36 is by having from the lower surface 34a of the 1st terminal board 1 terminal of one end 36a, He Cong outstanding downwards
The side 34b of platform protruded in axial direction (Y-direction) and by the end of the 1st spiral 33 winding other end 36b L-type terminal structure
At.
2nd terminal 46 is by having from the lower surface 44a of the 2nd terminal board 2 terminal of one end 46a, He Cong outstanding downwards
The side 44b of platform protruded in axial direction (Y-direction) and by the end of the 2nd spiral 43 winding other end 46b L-type terminal structure
At.
Also, the 1st terminal insertion hole 17a for being inserted into one end 36a of the 1st terminal is formed on the 1st terminal board 34.This
Outside, the 2nd terminal insertion hole 17b for being inserted into one end 46a of the 2nd terminal is formed on the 2nd terminal board 44.
1st terminal insertion hole 17a is than the 1st terminal board on overlook view (rearwardly from the paper surface of (a) of Fig. 2)
The small diameter of the shape of upper surface 34c, penetrates through in z-direction and is formed.In addition, the 2nd terminal insertion hole 17b is in overlook view
(rearwardly from the paper surface of (a) of Fig. 2) is the diameter smaller than the shape of the upper surface 44c of the 2nd terminal board, in z-direction
It penetrates through and is formed.
In addition, the 1st terminal insertion hole 17a is disposed in the substantial middle of the upper surface 34c of the 1st terminal board in overlook view,
It is not contacted with the 1st convex edge 32.2nd terminal insertion hole 17b is disposed in the big of the upper surface 44c of the 2nd terminal board in overlook view
Center is caused, is not contacted with the 2nd convex edge 42.
On the upper surface 34c of the 1st terminal board, it is formed with and is connected on the 1st terminal insertion hole 17a and is inserted into the 1st end
The 1st terminal insertion groove 18a of the other end 36b of son 36.On the upper surface 44c of the 2nd terminal board, it is formed with and is connected to the 2nd end
Son is inserted on the 17b of hole and is inserted into the 2nd terminal insertion groove 18b of the other end 46b of the 2nd terminal 46.
Axially (Y-direction) is formed 1st terminal insertion groove 18a on the upper surface 34c of the 1st terminal board.2nd terminal is inserted
Entering slot 18b, axially (Y-direction) is formed on the upper surface 44c of the 2nd terminal board.
If one end 36a of the 1st terminal is inserted into terminal insertion hole 17a from the upper surface 34c of the 1st terminal board,
The lower surface 34a of one end 36a of 1st terminal from the 1st terminal board is prominent and is fixed.If one end 46a of the 2nd terminal is by from
The upper surface 44c of 2 terminal boards is inserted into terminal insertion hole 17b, then one end 46a of the 2nd terminal is from the lower surface of the 2nd terminal board
44a is prominent and is fixed.
In addition, if the other end 36b of the 1st terminal is inserted into the 1st terminal insertion groove 18a, then the 1st terminal is another
Hold 36b by the side 34b from the 1st terminal board prominent in axial direction (Y-direction) (referring to (a) of Fig. 2), in the side Z of the 1st terminal board
To center be fixed (referring to Fig. 2 (b)).If the other end 46b of the 2nd terminal is inserted into the 2nd terminal insertion groove 18b
In, then the other end 46b of the 2nd terminal is protruded in axial direction (Y-direction) from the side 44b of the 2nd terminal board (referring to (a) of Fig. 2),
It is fixed in the center of the Z-direction of the 2nd terminal board (referring to (b) of Fig. 2).
Also, as shown in (a) of Fig. 6, between being equipped between the other end 36b and aftermentioned 1st fastener 56 of the 1st terminal
Gap.In addition, being equipped with gap between the other end 46b and aftermentioned 2nd fastener 57 of the 2nd terminal.
1st spiral 33 is wrapped around 1 layer on the periphery of the 1st tubular body part 31.2nd spiral 43 is in the 2nd tubular body part
1 layer is wrapped around on 41 periphery.
Two ends of the 1st spiral 33 are electrically connected at the other end 36b of the 1st terminal on the 1st bobbin 30 respectively
On.Two ends of the 2nd spiral 43 are electrically connected at respectively on the other end 46b of the 2nd terminal on the 2nd bobbin 40.
The shape of 1st spiral 33 is disposed in the shape of the convex edge 32 than the 1st bobbin in the inner part.The shape of 2nd spiral 43
It is disposed in the shape of the convex edge 42 than the 2nd bobbin in the inner part.
In addition, the 1st spiral 33 and the 2nd spiral 43 can also be wound as multilayer respectively.
Common mode iron core 10 as shown in figure 3, be made of two U-shaped iron cores 11, the iron core 11 be respectively provided with arm 12 and from
The leg 16 that the both ends of arm 12 extend to right angle orientation.
Box 50 has bottom quadrangle cylindrical portion 51,1st fastener as shown in figure 4, being made of nonmagnetic thermoplastic resin
56 and 2nd fastener 57.Specifically, box 50, which has, has bottom quadrangle cylindrical portion 51, from there is bottom with side wall 53 and bottom 52
The upper and lower ends of the axial direction (Y-direction) of quadrangle cylindrical portion 51 flat two 1st fasteners 56, He Congyou outstanding to the left
The upper and lower ends of the axial direction (Y-direction) of bottom quadrangle cylindrical portion 51 two outstanding flat 2nd fasteners 57 to the right.Two
Length L1 between the gap H1 of 1st fastener 56 and the convex edge 32 of the 1st bobbin in axial (Y-direction) is roughly the same.This
Outside, the length L2 between the gap H2 of two 2nd fasteners 57 and the convex edge 42 of the 2nd bobbin in axial (Y-direction) is substantially
It is identical.
The upper surface of 1st fastener 56 is formed as planar.The lower surface of 1st fastener 56 be shaped generally as it is planar,
With the 1st protrusion 56a with the locking of the 1st order difference part 35 of aftermentioned 1st terminal board 34.The upper surface of 2nd fastener 57 is formed
To be planar, it is coplanar for linking in parallel with the upper surface of 1st fastener 56.The lower surface of 2nd fastener 57 is formed
For roughly planar, there is the 2nd protrusion 57a engaged with the 2nd order difference part 45 of aftermentioned 2nd terminal board 44.In addition, box 50
It can be formed by thermosetting resin.
The upper surface 34c of 1st terminal board is to be cut off the in z-direction compared with the interior bottom 31a of the 1st tubular body part
The structure of the amount of thickness of 1 fastener 56.In addition, the upper surface 44c of the 2nd terminal board is the interior bottom 41a with the 2nd tubular body part
Compared to the structure for the amount of thickness for being cut off 2nd fastener 57 in z-direction.This is in order in the 1st tubular body part 31 and the 2nd tubular
When inserting the leg 16 of two iron cores 11 in body part 41 respectively, 1st fastener 56 and 2nd fastener 57 are clamped to common mode
Between the arm lower end 15 of iron core 10, the 1st terminal board and upper surface 34c, 44c of the 2nd terminal board.
In addition, on the upper surface 34c of the 1st terminal board, it is formed with the with the 1st protrusion 56a of 1st fastener 56 locking
1 order difference part 35.On the upper surface 44c of the 2nd terminal board, it is formed with the 2nd rank with the 2nd protrusion 57a of 2nd fastener 57 locking
Poor portion 45.
In addition, box 50 has bottom quadrangle cylindrical portion 51 as shown in figure 5, between the 1st bobbin 30 and the 2nd bobbin 40.And
And 1st fastener 56 is locked on the upper surface 34c of the 1st terminal board, and 2nd fastener 57 is locked in the 2nd terminal board
Upper surface 44c on.
Specifically, for it is following in this way.
The convex edge 32 of the 1st bobbin is inserted into the gap H1 of two 1st fasteners 56.In two 2nd fasteners 57
The convex edge 42 of the 2nd bobbin is inserted into the H2 of gap.Then, the convex edge 32,42 of the 1st tubular body part and the 2nd tubular body part
Outer end is connected on the side wall 53 of bottom quadrangle cylindrical portion.In addition, 1st fastener 56 is disposed in the upper surface 34c of the 1st terminal board
On, the 1st protrusion 56a is engaged with the 1st order difference part 35 and is fixed by bonding agent.2nd fastener 57 is provided in the 2nd terminal board
On the 44c of upper surface, the 2nd protrusion 57a is engaged with the 2nd order difference part 45 and is fixed by bonding agent.Also, there is bottom quadrangle cylindrical portion 51
Between the 1st tubular body part 31 and the 2nd tubular body part 41, the 1st tubular body part 31 and the 2nd tubular body part 41 are in axis
It is concurrently attached on box 50 upwards.1st bobbin 30 and the 2nd bobbin 40 are fixed on box 50 on the direction XYZ of Fig. 1.
Also, in the 1st tubular body part 31 and the 2nd tubular body part 41, it is inserted into the leg 16 of two iron cores 11 respectively,
The front end of two legs 16 of iron core 11 is mutually butted in the 1st tubular body part 31 and the 2nd tubular body part 41, the formation of iron core 11
Be it is O-shaped, form the closed magnetic circuit of common mode.
In the present invention, as shown in (a) of Fig. 6,1st fastener 56 is disposed in the arm of common mode iron core as the 1st insulation wall
Between subordinate end 15 and the other end 36b of the 1st terminal.In addition, 2nd fastener 57 is disposed in common mode iron core as the 2nd insulation wall
Arm lower end 15 and the 2nd terminal other end 46b between.
Specifically, 1st fastener 56 is formed in overlook view (rearwardly from the paper surface of (a) of Fig. 2) shape
Upper surface 34c than the 1st terminal board is big, is arranged in a manner of all covering the upper surface 34c of the 1st terminal board.In addition, the 2nd
Fastener 57 plane depending on observation (rearwardly from the paper surface of (a) of Fig. 2) shape formed than the 2nd terminal board upper surface
44c is big, is arranged in a manner of all covering the upper surface 44c of the 2nd terminal board.
If 1st fastener 56 is equipped onto the upper surface 34c of the 1st terminal board, one end 56b of 1st fastener with
1st convex edge 32 abuts.The other end 56c of 1st fastener is from the side 34b of the 1st terminal board towards outer in axial direction (Y-direction)
Square protrusion and be arranged.
If by 2nd fastener 57 with being set on the upper surface 44c of the 2nd terminal board, one end 57b of 2nd fastener with
2nd convex edge 42 abuts.The other end 57c of 2nd fastener is from the side 44b of the 2nd terminal board towards outer in axial direction (Y-direction)
Square protrusion and be arranged.
Also, it is inserted into the leg 16 of two iron cores 11 respectively in the 1st tubular body part 31 and the 2nd tubular body part 41,
Iron core 11 is formed as O-shaped.Then, the whole face Yu 1st fastener 56 and 2nd fastener 57 of the arm lower end 15 of common mode iron core
Upper surface contacts and is arranged, and common mode iron core 10 is fixed on the 1st bobbin 30 and the 2nd bobbin 40.
Also, 1st fastener 56 more outstanding than the side 34b of the 1st terminal board is than the arm 12 and the 1st terminal of common mode iron core
Other end 36b extend outward in axial direction (Y-direction) and be arranged.2nd fastener more outstanding than the side 44b of the 2nd terminal board
57 extend in axial direction (Y-direction) than the arm 12 of common mode iron core and the other end 46b of the 2nd terminal outward and are arranged.
Fixed metalwork is formed as U-shaped to touch the docking of two iron cores 11, to clip two iron cores from axial
11 mode installs (not shown) from the side side 40a of the 2nd bobbin 40.
In this way, this example has the 1st be made of resin tin with the 1st tubular body part 31 for being wrapped around the 1st spiral 33
Pipe 30, is located at mutually in axis the 2nd bobbin 40 being made of resin with the 2nd tubular body part 41 for being wrapped around the 2nd spiral 43
The box 50 being made of resin and leg 16 between upward the 1st tubular body part 31 being arranged parallel and the 2nd tubular body part 41
It is inserted into the common mode iron core 10 of the closed magnetic circuit of the 1st tubular body part 31 and the formation common mode in the 2nd tubular body part 41.
Also, the 1st bobbin 30 has the 1st terminal board 34 of the axial sides for being located at the 1st tubular body part 31.
In addition, the 2nd bobbin 40 has the 2nd terminal board 44 of the axial sides for being located at the 2nd tubular body part 41.
In addition, on the 1st terminal board 34, fixed one end 36a is prominent downwards and other end 36b is from side towards foreign side
1st terminal 36 of the L-type of extension.
In addition, on the 2nd terminal board 44, fixed one end 46a is prominent downwards and other end 46b is from side towards foreign side
2nd terminal 46 of the L-type of extension.
In addition, being wrapped around the end of the 1st spiral 33 on the other end 36b of the 1st terminal.
In addition, being wrapped around the end of the 2nd spiral 43 on the other end 46b of the 2nd terminal.
In addition, being equipped with 1st fastener 56 and 2nd fastener 57 on box 50.
In addition, 1st fastener 56 is locked on the upper surface 34c of the 1st terminal board, common mode iron core 10 is disposed in the 1st locking
On the upper surface in portion 56.
In addition, 2nd fastener 57 is locked on the upper surface 44c of the 2nd terminal board, common mode iron core 10 is disposed in the 2nd locking
On the upper surface in portion 57.
In addition, 1st fastener 56 is disposed between common mode iron core 10 and the 1st terminal 36 as the 1st insulation wall, in addition, the 2nd
Fastener 57 is disposed between common mode iron core 10 and the 2nd terminal 46 as the 2nd insulation wall.
According to the line filter of this example, the 1st bobbin 30, the 2nd bobbin 40 and box 50 are not easy the tree of deviation by outer dimension
Rouge is formed.
Also, since the 1st bobbin 30 and the 2nd bobbin 40 are locked on box 50 by 1st fastener 56 and 2nd fastener 57
On, so can will precisely be positioned between the terminal being respectively provided on two seperated bobbins.
In addition, in the I type terminal as previous example, due to being wound from terminal board downwards I type terminal outstanding
Spiral end, so the line filter high High Level twining amount.On the other hand, in this example, one end it is prominent downwards and
The L-type terminal that the other end extends outward from terminal board side, by winding spiral end on the other end of the L-type terminal,
The amount of height in winding at one end can be subjected to low level.
But if I type terminal is changed to L-type terminal and by the line filter low level, due to being arranged
Common mode iron core is equipped on the upper surface for having the terminal board of L-type terminal, so the L-type end extended outward from the side of terminal board
The problem of other end of son and the lower end of common mode iron core are close, are difficult to ensure insulation distance.So this example have it is following this
The structure of sample.
1st fastener and 2nd fastener are locked on the upper surface of the 1st terminal board and the 2nd terminal board.
In addition, common mode iron core is disposed on the upper surface of 1st fastener and 2nd fastener.
In addition, 1st fastener is disposed between common mode iron core and the 1st terminal as the 1st insulation wall.
In addition, 2nd fastener is disposed between common mode iron core and the 2nd terminal as the 2nd insulation wall.
Therefore, the another of common mode iron core and L-type terminal can be kept while the line filter low level for making this example
The insulation distance of one end.
In this way, this example can obtain compared with structure as previous example maintain terminal position precision while, no
Increase the line filter that part counts and keeps insulation distance, low level.
In addition, in this example, 1st fastener 56 is disposed in the arm lower end 15 and the 1st of common mode iron core as the 1st insulation wall
Between the other end 36b of terminal.In addition, 2nd fastener 57 as the 2nd insulation wall be disposed in the arm lower end 15 of common mode iron core with
Between the other end 46b of 2nd terminal.
Then, the 1st insulation wall is equipped between the arm lower end 15 of common mode iron core and the other end 36b of the 1st terminal
In the case of insulation distance (R1 of (a) of Fig. 6) be than the other end 36b in the arm lower end 15 of common mode iron core and the 1st terminal
Between do not have be arranged the 1st insulation wall in the case where insulation distance (R2 of (b) of Fig. 6) extend distance.In addition, in common mode iron
Be equipped between the arm lower end 15 of core and the other end 46b of the 2nd terminal insulation distance in the case where the 2nd insulation wall (Fig. 6's
(a) R3) it is than there is no that the 2nd insulation wall is arranged between the arm lower end 15 of common mode iron core and the other end 46b of the 2nd terminal
In the case of insulation distance (R4 of (b) of Fig. 6) extend distance.
The R1 expression of (a) of Fig. 6 is equipped with insulation wall 57 between the arm lower end 15 and the 2nd terminal 43 of common mode iron core
In the case of common mode iron core arm lower end 15 and the 2nd terminal other end 46b insulation distance.
The R3 expression of (a) of Fig. 6 is equipped with insulation wall 57 between the arm lower end 15 and the 2nd terminal 43 of common mode iron core
In the case of, the insulation distance of the other end 46b of the arm lower end 15 of common mode iron core and the 2nd terminal.
The R2 of (b) of Fig. 6 is indicated between the arm lower end 15 and the 2nd terminal 43 of common mode iron core that insulation wall 57 is not arranged
In the case where, the insulation distance of the other end 46b of the arm lower end 15 of common mode iron core and the 2nd terminal.
The R4 of (b) of Fig. 6 is indicated between the arm lower end 15 and the 2nd terminal 43 of common mode iron core that insulation wall 57 is not arranged
In the case where, the insulation distance of the other end 46b of the arm lower end 15 of common mode iron core and the 2nd terminal.
(about insulation distance R1, R2)
In (a) of Fig. 6,1st fastener 56 and 2nd fastener 57 as insulation wall setting are provided in common mode iron core
Arm lower end 15, between the 1st terminal and the other end 36b, 46b of the 2nd terminal, and than the arm lower end 15 of common mode iron core,
The other end 36b, 46b of 1st terminal and the 2nd terminal extend outward and are arranged.Then, the arm lower end 15 of common mode iron core and
The insulation distance R1 of the other end 36b, 46b of 1 terminal and the 2nd terminal pass through the 1st fastener 56 and the 2nd that is arranged as insulation wall
Fastener 57 and be extended, formed than without be arranged insulation wall in the case where insulation distance R2 long.
(about insulation distance R3, R4)
In addition, the overlook view (on the right side of the left sides of paper) of (a) in Fig. 6,1st fastener 56 and the 2nd is engaged
Portion 57 is by the 1st terminal insertion hole 17a, the 2nd terminal insertion hole 17b, the 1st terminal insertion hole 17a and the 2nd terminal insertion hole 17b
Periphery covering.
Specifically, the overlook view of (a) in Fig. 6,1st fastener 56 is opened by the 1st terminal insertion hole 17a and as it
Periphery covering near mouth end, and 2nd fastener 57 is by the 2nd terminal insertion hole 17b and as the periphery of its adjacent open end
Covering.
Then, in the overlook view of (a) of Fig. 6, by the overlapping of 1st fastener 56 and the periphery of the 1st terminal insertion hole 17a
Part forms the prolongation 80 of insulation distance, by the lap of 2nd fastener 57 and the periphery of the 2nd terminal insertion hole 17b
Form the prolongation 80 of insulation distance.
The insulation distance R3 of the other end 36b, 46b of the arm lower end 15 of common mode iron core, the 1st terminal and the 2nd terminal as a result,
It is extended by above-mentioned lap (prolongation), forms to compare the insulation distance R4 in the case where not forming insulation wall
It is long.
In this way, this example compared with structure as previous example, can not increase and decrease part number of packages and make common mode iron core and the 1st end
The insulation distance of the other end of son and the 2nd terminal is elongated.In addition, insulation distance R1 and insulation distance R3 are preferably identical.
In addition, contact is equipped with common mode iron core 10 on the upper surface of 1st fastener 56 and 2nd fastener 57.As a result,
The 1st fastener 56 and 2nd fastener 57 formed as insulation wall is by the arm lower end 15 of common mode iron core, the 1st terminal board and the 2nd
Upper surface 34c, 44c of terminal board are clamped.1st fastener 56 and 2nd fastener 57 are securely fixed on box 50 as a result,
Position deviation is not easy between terminal.
In addition, the whole face of the arm lower end 15 of common mode iron core is contacted in the upper surface of 1st fastener 56 and 2nd fastener 57
Above it is arranged.Therefore, 1st fastener 56 and 2nd fastener 57 are more firmly secured on box 50, so not transposition between terminal
Offset is set, and when line filter of the invention to be installed on circuit substrate, the change of common mode iron core can be inhibited as far as possible
Shape and improve reliability.
(the 2nd embodiment example)
Then, the structure of the line filter of the 2nd embodiment example for the present invention is illustrated by Fig. 7 to Fig. 9.
In Fig. 7 into Fig. 9, identical label is assigned for component identical with component of the Fig. 1 into Fig. 6, about these
Component omission explanation.
The line filter of 1st embodiment example can be removed common-mode noise by the way that common mode iron core 10 is arranged, but the 2nd is real
The line filter of mode example is applied by the additional normal mode iron core 60 of the 1st embodiment example, it can by common-mode noise and just
The two of normal modal noise removes.
Normal mode iron core 60 is as shown in figure 8, be formed to have the T-type of two arm 61 and 1 legs 64.
Have bottom quadrangle cylindrical portion (maintaining part) 51 opening shape become be inserted into it is normal in bottom quadrangle cylindrical portion 51
The shape of the leg 64 of mode iron core is roughly the same.
There is the opening direction of bottom quadrangle cylindrical portion 51 to be formed as and the 1st tubular body part 31 and the 2nd tubular body part 41
Axially at right angle orientation.
There is bottom quadrangle cylindrical portion 51 that there is bottom (abutting part) 52.Also, if normal mode iron core 60 is inserted into guarantor
It holds in portion 51, then the leg 64 of normal mode iron core is connected on abutting part 52 and is fixed.
Also, in this example, the leg 16 of common mode iron core is provided in the 1st tubular body part 31 and the 2nd tubular body part
In 41 and iron core 11 is formed as O-shaped, if normal mode iron core 60 be inserted into bottom quadrangle cylindrical portion 51 and be connected to
In socket part 52, then makes normal mode iron core 60 close to common mode iron core 10, normal mode characteristic can be obtained.
In this way, being equipped with the maintaining part 51 that normal mode iron core 60 is fixed on box 50, normal mode iron core 60 is inserted into
It is fixed into maintaining part 51, forms closed magnetic circuit with common mode iron core 10.
The 2nd embodiment example can inhibit common-mode noise and normal mode noise, energy in 1 line filter as a result,
Enough be conducive to carry the miniaturization of the electronic equipment of the line filter of this example.
The present invention is not limited to above embodiment examples, can variedly change within the scope of its subject matter.
In the above description, the contact of common mode iron core 10 is matched on the upper surface of 1st fastener 56 and 2nd fastener 57
If but it is not limited to this.As long as can ensure defined insulation distance, the of thinning above embodiment example also can be used
1 fastener 56 and 2nd fastener 57, by the upper table of the arm lower end 15 of common mode iron core and 1st fastener 56 and 2nd fastener 57
Face is non-contactly arranged.
In addition, in the above description, gap, In are equipped between the other end 36b and 1st fastener 56 of the 1st terminal
Gap is equipped between the other end 46b and 2nd fastener 57 of 2nd terminal, but it is not limited to this.As long as defined in capable of ensuring absolutely
Edge distance, is also possible to the other end 36b of the 1st terminal and 1st fastener 56 contacts setting, the other end 46b of the 2nd terminal and
The contact setting of 2 fasteners 57.
In addition, in the above description, 1st fastener 56 and 2nd fastener 57 are disposed in the 1st order difference part 35 and the 2nd rank
It is fixed at poor portion 45 and by bonding agent, but as shown in (a) of Fig. 9, (b) of Fig. 9, it can also be in the 1st protrusion of 1st fastener
On the lower end surface of 56a and the 2nd protrusion 57a of 2nd fastener be arranged the 1st protrusion 56d and the 2nd protrusion 57d, will with protrusion 56d,
57d chimeric recess portion (not shown) is located on the 1st order difference part 35 and the 2nd order difference part 45 and keeps its bumps chimeric.
Claims (5)
1. a kind of line filter, which is characterized in that
Have:
1st bobbin has the 1st tubular body part for being wound the 1st spiral, is made of resin；
2nd bobbin has the 2nd tubular body part for being wound the 2nd spiral, is made of resin；
Box, between the above-mentioned 1st tubular body part being mutually arranged parallel in the axial direction and above-mentioned 2nd tubular body part, by
Resin is constituted；And
Common mode iron core, leg are inserted into above-mentioned 1st tubular body part and above-mentioned 2nd tubular body part, form closing for common mode
Magnetic circuit；
Above-mentioned 1st bobbin has the 1st terminal board of the axial sides for being located at above-mentioned 1st tubular body part；
Above-mentioned 2nd bobbin has the 2nd terminal board of the axial sides for being located at above-mentioned 2nd tubular body part；
On above-mentioned 1st terminal board, it is fixed with the 1st of the L-type that one end protrudes downwards, the other end extends from side towards foreign side
Terminal；
On above-mentioned 2nd terminal board, it is fixed with the 2nd of the L-type that one end protrudes downwards, the other end extends from side towards foreign side
Terminal；
The end of above-mentioned 1st spiral is wound on the other end of above-mentioned 1st terminal；
The end of above-mentioned 2nd spiral is wound on the other end of above-mentioned 2nd terminal；
1st fastener and 2nd fastener are equipped on above-mentioned box；
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 above-mentioned 1st locking
On the upper surface in portion；
Above-mentioned 2nd fastener is locked on the upper surface of above-mentioned 2nd terminal board, and above-mentioned common mode iron core is disposed in above-mentioned 2nd locking
On the upper surface in portion；
Above-mentioned 1st fastener 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.
2. line filter as described in claim 1, which is characterized in that
Above-mentioned 1st fastener is than the other end of above-mentioned common mode iron core and above-mentioned 1st terminal from the side direction of above-mentioned 1st terminal board
Foreign side extends and is arranged；
Above-mentioned 2nd fastener is than the other end of above-mentioned common mode iron core and above-mentioned 2nd terminal from the side direction of above-mentioned 2nd terminal board
Foreign side extends and is arranged.
3. line filter as claimed in claim 2, which is characterized in that
In plan view, the 1st terminal insertion hole of one end of above-mentioned 1st terminal and above-mentioned is inserted into covering to above-mentioned 1st fastener
The periphery of 1st terminal insertion hole；
In plan view, the 2nd terminal insertion hole of one end of above-mentioned 2nd terminal and above-mentioned is inserted into covering to above-mentioned 2nd fastener
The periphery of 2nd terminal insertion hole.
4. line filter as claimed in claim 3, which is characterized in that
Above-mentioned common mode iron core contact is arranged on the upper surface of above-mentioned 1st fastener and above-mentioned 2nd fastener.
5. line filter as claimed in claim 4, which is characterized in that
On above-mentioned box, equipped with the maintaining part that normal mode iron core is fixed；
Above-mentioned normal mode iron core, which is inserted into, to be fixed in above-mentioned maintaining part, forms closed magnetic circuit with above-mentioned common mode iron core.
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 CN105990014A (en) | 2016-10-05 |
| CN105990014B true 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 |
| JP6403614B2 (en) | 2018-10-10 |
| CN105990014A (en) | 2016-10-05 |
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