CN110491654A - Coil component - Google Patents
Coil component Download PDFInfo
- Publication number
- CN110491654A CN110491654A CN201910394630.4A CN201910394630A CN110491654A CN 110491654 A CN110491654 A CN 110491654A CN 201910394630 A CN201910394630 A CN 201910394630A CN 110491654 A CN110491654 A CN 110491654A
- Authority
- CN
- China
- Prior art keywords
- terminal
- reel
- coil component
- bobbin
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 239000000306 component Substances 0.000 description 69
- 238000010618 wire wrap Methods 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 14
- 238000009413 insulation Methods 0.000 description 11
- 239000008358 core component Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
This application involves coil components, it is with terminal and the coil component (1) that is mounted on the surface comprising front and back and left and right directions, including as the coil (6) of spool (100), the iron core (2) with middle foot (21), bobbin (3) and being mounted on the cover on bobbin and being made of insulating material (7) using front-rear direction；In bobbin, there is the lower section for the hollow tube-shape reel for being open and being wound with spiral in front and back, be formed with terminal (4) from front and the terminal board (32) projected behind；The middle foot of iron core is inserted into the hollow portion (33) of reel；Cover is configured to, and the eaves portion (71) that front-end and back-end extend in the lateral direction is connected by the interconnecting piece (72) extended in the longitudinal direction, is in H font when from up and down direction, and can be inserted into the hollow portion of reel；State configuration of the interconnecting piece to be configured at underfooting side in iron core is covered from the top of terminal board terminal outstanding by eaves portion in the hollow portion of reel.
Description
Cross reference to related applications
This application claims submitting on May 14th, 2018, the Japanese Patent Room, application No. is the Japan of 2018-093141 specially
The priority and right of benefit application, entire contents are hereby incorporated by reference in the application.
Technical field
The present invention relates to a kind of coil components.
Background technique
In coil component, have it is a kind of it is mountable on substrate, be referred to as board mounting type comprising as terminal board around
Spool.The bobbin of board mounting type coil component, it is integrally formed with the reel and terminal board of the spiral that is wound with coil, and
And terminal protrudes from terminal board.Terminal is made of linear conductor, and intermediate portion is embedded in bobbin.And one end of terminal, it is inciting somebody to action
When coil component is installed on substrate, the installation terminal being fixed on substrate in a manner of welding etc. is served as, the other end is then institute
" the winding terminal " of meaning, the end that the winding for being wound with the spiral of coil thereon starts and winding terminates.
Fig. 1 shows an example of the bobbin 103 with terminal board 32.Limiting orthogonal left and right, front and back
While with three upper and lower directions, using the direction of the spool 100 of coil as front-rear direction.In addition, when coil component is installed
When comprising the upper surface of front-rear direction and the face of left and right directions, bobbin 3 includes having the hollow of opening in front-end and back-end
The reel 31 of tubular, and the terminal board 32 with multiple terminals 4 is formed in the lower section of reel 31.Each terminal 4 is curved
For song at L-shaped, wire wrap terminal 41 is prominent with rear forwards from the front-end and back-end of terminal board 32 respectively, and installs and use terminal
(also referred to as mounting terminal 42 below) then protrudes downwards.
But, it is not limited only to coil component, electronic component also requires to reduce mounting area by minimizing, passes through low back
Change to control upper-lower height when installation.About the low back of coil component, a side to be parallel to mounting surface can be passed through
Carry out the height of control coil component to " horizontal " in the spool direction as coil.But when horizontal coil component, such as conduct
Gate drive transformer in insulated gate bipolar transistor (IGBT) that vehicle power supply transformer uses etc. and when handling high voltage,
Its miniaturization becomes difficult.
Particularly, it in the coil component of the gate drive transformer of IGBT etc., needs to be wanted according to electronic circuit side
Ask or the specification of the voltage value etc. of coil component processing, be arranged between the spiral or iron core and terminal of coil scheduled insulation away from
From.In the spiral of coil, as being usually provided with the coating layer made of insulator on the surface, the insulation to be ensured
Distance as the distance between iron core and terminal.Moreover, insulation distance includes, space is passed through with shortest path connection iron core and end
When having insulant on the space insulation distance of son and the most short connection path between iron core and terminal, along insulator surface
It detours with the surface insulation distance of shortest distance connection iron core and terminal.
In the horizontal coil component for being conducive to low back, since the middle foot of iron core protrudes in the longitudinal direction, iron
Core broadens in the longitudinal direction.But when wire wrap terminal is from the terminal board of bobbin forwards and when rear is prominent, in order to ensure
Space insulation distance between the iron core and wire wrap terminal of wide cut in the longitudinal direction, needs to increase bobbin in the longitudinal direction
Width.That is, it needs to increase the distance between the front/rear end for protruding wire wrap terminal on bobbin and iron core.Alternatively, needing
Increase make on bobbin wire wrap terminal position outstanding and iron core in the up-down direction at a distance from.However, if up and down direction
Distance increases, then cannot obtain through horizontal brought low back effect.Then, it in some horizontal coil components, is passing through
The cover for ensuring insulation distance is provided on the path in the space of iron core and terminal.In addition, public in following patent documents 1
A kind of coil component with cover, i.e. so-called " band cover spiral component " are opened.
Existing technical literature
Patent document
Patent document 1: special open 2006-237203 bulletin
Summary of the invention
Subject to be solved by the invention
As described above, the coil component with the bobbin integrally formed with terminal board is designed to realize low back
At using front-rear direction as reel wound have coil spiral it is horizontal.And in existing horizontal coil component, to ensure absolutely
Edge apart from while realize miniaturization, need to use covering terminal above cover.However, the cover of existing coil component has frame
Shape structure, to be mounted on the reel of bobbin and to cover the top of terminal.Also, cover is the mould made of insulating resin
The molding product of component processed, frame-shaped is easy to generate well-known weld seam, to cause in apparent defect or intensity not
Foot.That is, existing coil component, may cause yield rate reduction.
In addition, cover has a complex shape in the spiral component disclosed in patent document 1, flange shape body part one
Body is formed in the lower end of the peripheral wall portion formed by the framework of hollow square tube shape, and the framework of the hollow square tube shape is using up and down direction as axis
Reel is covered, this also will increase the manufacturing cost of cover.Therefore, if complex-shaped cover is arranged for coil component,
It is just difficult to inexpensively provide coil component.
Therefore, it is an object of the present invention to more inexpensively provide a kind of coil part of low back that can ensure that insulation distance
Part.
Solution to problem
To achieve the goals above, the coil component that one aspect of the present invention provides, with front and rear, left and right and up and down
All directions as three mutually orthogonal directions,
It with terminal and is mounted on the surface comprising front and back and left and right directions, which is characterized in that the coil component packet
It includes:
Coil is formed by spiral by reel wound of front-rear direction；Iron core, with middle foot；Bobbin is wound with
The spiral；And cover, it is mounted on the bobbin and is made of insulating material；Wherein
In the bobbin, there is the lower section of the reel for the hollow tube-shape for being open and being wound with the spiral in front and back,
The terminal is formed with from front and the terminal board projected behind；
The middle foot of the iron core is inserted into the hollow portion of the reel；
The cover is configured to, and the eaves portion that front-end and back-end extend in the lateral direction by prolonging in the longitudinal direction
The interconnecting piece stretched is connected, and is in H shape when from up and down direction, and can be inserted into the hollow portion of the reel；
The interconnecting piece be configured at the middle foot of the iron core lower section state configuration the reel hollow portion,
From the top of the terminal board terminal outstanding, covered by the eaves portion.
More preferably coil component is formed with and extends along the longitudinal direction below the hollow portion of the reel
Groove, interconnecting piece configuration is in the groove.
Invention effect
In accordance with the invention it is possible to more inexpensively provide a kind of coil component of low back for ensuring insulation distance.In addition, its
He will illustrate effect in the following description.
Detailed description of the invention
Fig. 1 is the outside drawing for constituting the bobbin of coil component.
Fig. 2 is the outside drawing of middle line coil component of the embodiment of the present invention.
Fig. 3 is the exploded perspective view of above-described embodiment middle line coil component.
Fig. 4 is the schematic diagram that the configuration relation of bobbin and cover of coil component is constituted in above-described embodiment.
Fig. 5 is the schematic diagram that the bobbin and cover of coil component are constituted in comparative example.
Fig. 6 is the figure for comparing the size of above-described embodiment middle line coil component and above-mentioned comparative example middle line coil component.
Fig. 7 is the schematic diagram that the variation of bobbin of coil component is constituted in above-described embodiment.
Specific embodiment
Attached drawing will be referred to, the embodiment of the present invention will be illustrated.In addition, in the attached drawing used in following explanation, it is right
Same or similar part, the sometimes repeated explanation using same tag and omission to it.Some attached drawings, are omitted when illustrating
Unnecessary label.
===embodiment==
Fig. 2 is the outside drawing of middle line of embodiment of the present invention coil component 1.In addition, hereinafter, by middle line of the embodiment of the present invention
The all directions of the top to bottom, left and right, front and rear of coil component 1 are, it is specified that be identical as bobbin shown in FIG. 1.Wherein, Fig. 2 (A) is from the right side
Perspective view when upper front observation line coil component 1, Fig. 2 (B) are the perspective views from bottom right forward observation coil component 1.Such as Fig. 2 institute
Show, the basic composition that the coil component 1 that embodiment provides includes has: coil 6, with the spool 100 on front-rear direction；Bobbin
3, it is integrally formed with the terminal board 32 that is equipped with terminal 4；And iron core 2, closed magnetic circuit is formed around coil 6.Moreover,
In coil component 1 shown in Fig. 2, iron core 2 is made of two iron core components (2a, 2b) relative to each other in the longitudinal direction.
Each iron core component (2a, 2b), not to be in contact with wire wrap terminal 41 while realizing the low back of coil component 1, in lower end
Side is formed with trapeze cut.That is, the configuration of wire wrap terminal 41 is in the trapeze cut region of iron core component (2a, 2b).Iron core as a result,
2 lower end position is lowered closer to the lower end of bobbin 3.In addition, adhesive tape (tape) 5 is wound on iron core 2, so that two iron cores
Component (2a, 2b) will not be separated from each other.Also, as shown in Fig. 2 (B), in order to ensure the insulation between iron core 2 and wire wrap terminal 41
Distance, coil component 1 have with the insulating properties cover 7 of 41 top of eaves shape covering wire wrap terminal.
Fig. 3 shows the exploded perspective view of embodiment middle line coil component 1.Iron core 2 be by two E sections core components (2a,
EE type 2b) being oppositely arranged in the longitudinal direction.In bobbin 3, one below the reel 31 for being wound with the spiral of coil 6
Body is formed with terminal board 32, and more parallel in the lateral direction wire wrap terminals 41, from the front and back of terminal board 32
Respectively forwardly side and rear are prominent.Reel 31 is the hollow square tube shape being open in front and back, and in the periphery of the reel 31
It is wound with spiral, to form coil 6.The middle foot 21 of E shaped iron core (2a, 2b) is inserted into the hollow portion 33 of reel 31.
Cover 7 is integral type component, the eaves portion 71 that front and back extends in the lateral direction, respectively by front and back
The interconnecting piece 72 just upwardly extended is connected, and H shape is rendered as when from up and down direction.The left and right width W1 of eaves portion 71 is set
It is set to and is greater than or equal to width W2, width W2 is that can will be inserted into the hollow portion 33 of reel 31 from front-rear direction and on a left side
The width that the multiple wire wrap terminals 41 arranged in right direction cover together.In the present embodiment, the left and right width W1 of eaves portion 71, with
Be formed with relationship between the left and right width W2 in the region of wire wrap terminal 41 and the left and right width W3 of hollow portion 33 be W3 > W1 >
W2.Therefore, cover 7 can easily be inserted into hollow portion 33, and the region for being formed with wire wrap terminal 41 can be practical by eaves portion 71
Covering.In addition, in the present embodiment, the opening shape of hollow portion 33 is ellipse, still, for example, working as the opening of hollow portion 33
When shape is rectangle, even if as long as then the left and right width W3 of hollow portion 33 is in the left and right width W1 of eaves portion 71 hereinafter, hollow portion 33
Catercorner length be greater than eaves portion 71 left and right width W3, then cover 7 can be inserted into hollow portion 33.Certainly, cover 7 can also
To be made of flexible resin, as long as cover 7 can be inserted into the hollow portion 33 of reel 31 i.e. when eaves portion 71 is bent
It can.In short, as long as cover 7 is configured to that the hollow portion 33 of reel 31 can be inserted into.
In addition, the left and right ends of eaves portion 71 are bent downwards, to cover the side of the wire wrap terminal 41 of left and right ends.By
This, eaves portion 71 can cover the left and right side of the wire wrap terminal 41 configured to left and right end portions, so that iron core 2 and wire wrap terminal 41 are more preferable
Ground insulation.
Also, in the coil component of the present embodiment 1, below the hollow portion 33 of reel 31 on be formed with along front and back
The groove 34 that direction extends.Also, the interconnecting piece of cover 7 72 is configured along the groove 34, then cover 7 will not be in the lateral direction
Offset.In the present embodiment, the left and right width W4 of groove 34 is substantially equal to the left and right width of interconnecting piece W5, and interconnecting piece 72
It is embedded in groove 34 with zero-lash state.
Then, the assembling sequence of the coil component 1 provided embodiment is illustrated.Firstly, by spiral wound on around
It is formed after coil 6 in the reel 31 of spool 3, the end of spiral is wrapped on wire wrap terminal 41.Next, by cover
7 are inserted into the hollow portion 33 of reel 31.It is embedded into the interconnecting piece 72 of cover 7 in the groove 34 in hollow portion 33.As a result, such as
Shown in Fig. 4, eaves portion 71 is by the wire wrap terminal 41a of the top and left and right ends of 4 wire wrap terminals 41 outstanding forward and backward
Left and right sides cover together.Also, the middle foot 21 of iron core component (2a, 2b) is inserted into the hollow of the reel 31 of bobbin 3
Portion 33 to form EE shaped iron core 2, and is wound with adhesive tape 5 around iron core 2.Two iron core component (2a, 2b) quilts as a result,
It is fixed.So complete coil component 1.
As above, in the coil component of the present embodiment 1, H-type cover 7 covers the top of wire wrap terminal 41.Therefore, unlike
Frame-shaped cover generates weld mark like that, and the yield rate caused by open defect and intensity are insufficient can be inhibited to reduce.In addition,
It, can be more compared with the coil component with frame-shaped cover by using the cover 7 of H-type in the coil component 1 of the present embodiment
Realize low back well.
Then, in order to which the low back of the coil component 1 to the present embodiment is illustrated, with the coil part with frame-shaped cover
Part is as comparative example.Fig. 5 shows the frame-shaped cover 8 and bobbin 103 that comparative example middle line coil component has.Fig. 5 (A) shows respectively
Bobbin 103 and cover 8 are gone out, Fig. 5 (B) shows the state that cover 8 is sheathed on after bobbin 103.As shown in figure 5, comparing
The bobbin 103 of example middle line coil component is identical as bobbin 103 shown in FIG. 1, in as shown in Figure 3, Figure 4, the present embodiment
The structure of the bobbin 3 of coil component 1 is also almost the same.But the bobbin 103 of comparative example middle line coil component, hollow
Groove 34 is not formed below portion 33.
In the coil component of comparative example, as shown in Fig. 5 (A), cover 8 is the frame-shaped being vertically open, and is had
There is the left and right central portion for making tabular frame to bend to trapezoidal shape.Also, as shown in Fig. 5 (B), when the volume of bobbin 103
When axle portion 31 is inserted into the opening 81 of frame-shaped cover 8, above-mentioned trapezoid area covers the top of wire wrap terminal 41 together.
Fig. 6 shows the present embodiment middle line coil component (also referred to as embodiment 1 below) and comparative example middle line coil component is (below
Claim comparative example 101) between outer dimension difference.When Fig. 6 shows embodiment 1 and comparative example 101 from left and right directions
Side view.In addition, cover (7,8) is indicated with slanted hatched line.
Embodiment 1 and comparative example 101 use identical iron core 2, and the front-rear direction size of each coil component (1,101)
It is to be limited by the size of iron core 2 with left and right directions size, therefore embodiment 1 and comparative example 101, when from up and down direction
Size is identical.But as shown in fig. 6, due to having used frame-shaped cover 8 in comparative example 101, so in covering winding terminal
The left and right of the trapezoid area of son 41 is also configured with the frame part of cover 8.Therefore, in order to by frame part configure in iron core 2
Lower section needs to make the size of the up and down direction of the terminal board 32 of bobbin 103, than the coiling of embodiment 1 in comparative example 101
Pipe 3 is big several.Therefore, in embodiment 1 and comparative example 101, even if the size of iron core 2 in above-below direction is identical, embodiment 1 exists
The size of up and down direction is also smaller.
===other embodiments==
In the coil component 1 of the present embodiment, the interconnecting piece 72 of cover 7 is embedded in the 33 inside institute of hollow portion of reel 31
In the groove 34 of formation.Therefore, it is increased without the size of the up and down direction of the hollow portion 33 of reel 31, iron core 2 can be made
Middle foot 21 is inserted into hollow portion 33.That is, the coil component 1 of embodiment is provided with by forming groove 34 in hollow portion 33
It is more suitable for the structure of slimming.It is of course also possible to form groove 34 not in the hollow portion 33 of bobbin 3.If worrying cover 7
Positional shift can occur, positional shift can be prevented by the way that cover 7 is the modes such as to be attached on bobbin 3 to.
In the coil component 1 of above-described embodiment, the eaves portion 71 of cover 7 covers the top of wire wrap terminal 41, but can also be with
Consider not being the bobbin from the rear and front end of terminal board 32 structure outstanding using wire wrap terminal 41.For example, as shown in Figure 7
As bobbin 203, wire wrap terminal 41 is prominent to the lower section of terminal board 32, and mounting terminal 42 is from the respective front and back of terminal board 32
The case where end face protrudes forward and backward, while its top is bent downwards etc..Even in this case, as long as in installation end
In son 42, also covered from the top in the region outstanding forward and backward of terminal board 32 by the eaves portion 71 of cover 7.In short,
As long as the eaves portion 71 of cover 7 can be covered on from the respective front/rear end of terminal board 32 forwards with rear terminal 4 outstanding
Top.
Although the structure of iron core 2 is EE type in the coil component 1 of above-described embodiment, but as long as iron core 2 has middle foot 21,
Iron core 2 can also be other structures such as EI type etc..
It is made of flexible resin, certainly, it is also although the cover 7 of the coil component 1 in embodiment
It can be made of the insulating materials with higher rigidity, as long as the size in iron core 2 can be inserted into.
Description of symbols
1,101 coil component, 2 iron cores, 2a, 2b iron core component,
3,103,203 bobbin, 4 terminals, 41 wire wrap terminals, 42 mounting terminals,
5 adhesive tapes, 6 coils, 7,8 covers, the middle foot of 21 iron cores, 31 reel,
32 terminal boards, 33 hollow portions, 71 eaves portions, 72 interconnecting pieces, 81 openings, 100 spools.
Claims (2)
1. a kind of coil component has terminal simultaneously using front and rear, left and right and upper and lower all directions as three mutually orthogonal directions
It is mounted on the surface comprising front and back and left and right directions, which is characterized in that the coil component includes:
Coil is formed by spiral by reel wound of front-rear direction；Iron core, with middle foot；Bobbin is wound with described
Spiral；And cover, it is mounted on the bobbin and is made of insulating material；Wherein
In the bobbin, there is the lower section of the reel for the hollow tube-shape for being open and being wound with the spiral, one in front and back
The terminal is formed with from front and the terminal board projected behind；
The middle foot of the iron core is inserted into the hollow portion of the reel；
The cover is configured to, and eaves portion that front-end and back-end extend in the lateral direction by extending in the longitudinal direction
Interconnecting piece is connected, and is in H shape when from up and down direction, and can be inserted into the hollow portion of the reel；
The interconnecting piece be configured at the middle foot of the iron core lower section state configuration the reel hollow portion,
From the top of the terminal board terminal outstanding, covered by the eaves portion.
2. coil component according to claim 1, which is characterized in that
Below the hollow portion of the reel, it is formed with the groove extended along the longitudinal direction,
The interconnecting piece configuration is in the groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-093141 | 2018-05-14 | ||
| JP2018093141A JP7141848B2 (en) | 2018-05-14 | 2018-05-14 | coil parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110491654A true CN110491654A (en) | 2019-11-22 |
| CN110491654B CN110491654B (en) | 2024-06-21 |
Family
ID=68546170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910394630.4A Active CN110491654B (en) | 2018-05-14 | 2019-05-13 | Coil component |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7141848B2 (en) |
| CN (1) | CN110491654B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006237203A (en) * | 2005-02-24 | 2006-09-07 | Fdk Corp | Winding component with cover |
| KR100638649B1 (en) * | 2006-06-27 | 2006-10-31 | 신한전기공업주식회사 | Dry type transformer having insulation reinforcement |
| JP2010093107A (en) * | 2008-10-09 | 2010-04-22 | Tdk Corp | Lateral type coil component |
| JP2011086842A (en) * | 2009-10-19 | 2011-04-28 | Tokyo Parts Ind Co Ltd | Line filter |
| JP2012234997A (en) * | 2011-05-06 | 2012-11-29 | Funai Electric Co Ltd | Low height transformer |
| JP2017089763A (en) * | 2015-11-11 | 2017-05-25 | 住友電装株式会社 | Solenoid valve and method of manufacturing solenoid valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542419Y2 (en) * | 1975-11-27 | 1980-10-04 | ||
| JPS5872809U (en) * | 1981-11-12 | 1983-05-17 | 東芝テック株式会社 | Electromagnetic device coil bobbin |
| JPH0722050B2 (en) * | 1990-02-09 | 1995-03-08 | 株式会社タムラ製作所 | Thin transformer |
| JPH087611Y2 (en) * | 1990-03-02 | 1996-03-04 | ティーディーケイ株式会社 | Bobbin with pin and transformer |
| JP2517365Y2 (en) * | 1990-03-15 | 1996-11-20 | 株式会社日立メディアエレクトロニクス | Power transformer |
| JPH05159930A (en) * | 1991-09-13 | 1993-06-25 | Kijima:Kk | Bobbin for thin transformer |
| JPH0563025U (en) * | 1992-01-31 | 1993-08-20 | 太陽誘電株式会社 | Transformer structure |
| EP1341193A1 (en) * | 2002-02-22 | 2003-09-03 | Magnetek S.p.A. | Transformer |
| JP2014236128A (en) * | 2013-06-03 | 2014-12-15 | Tdk株式会社 | Coil device |
-
2018
- 2018-05-14 JP JP2018093141A patent/JP7141848B2/en active Active
-
2019
- 2019-05-13 CN CN201910394630.4A patent/CN110491654B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006237203A (en) * | 2005-02-24 | 2006-09-07 | Fdk Corp | Winding component with cover |
| KR100638649B1 (en) * | 2006-06-27 | 2006-10-31 | 신한전기공업주식회사 | Dry type transformer having insulation reinforcement |
| JP2010093107A (en) * | 2008-10-09 | 2010-04-22 | Tdk Corp | Lateral type coil component |
| JP2011086842A (en) * | 2009-10-19 | 2011-04-28 | Tokyo Parts Ind Co Ltd | Line filter |
| JP2012234997A (en) * | 2011-05-06 | 2012-11-29 | Funai Electric Co Ltd | Low height transformer |
| JP2017089763A (en) * | 2015-11-11 | 2017-05-25 | 住友電装株式会社 | Solenoid valve and method of manufacturing solenoid valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019201041A (en) | 2019-11-21 |
| JP7141848B2 (en) | 2022-09-26 |
| CN110491654B (en) | 2024-06-21 |
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