CN101477872A - Winding wire type coil component - Google Patents
Winding wire type coil component Download PDFInfo
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- CN101477872A CN101477872A CNA2008101696147A CN200810169614A CN101477872A CN 101477872 A CN101477872 A CN 101477872A CN A2008101696147 A CNA2008101696147 A CN A2008101696147A CN 200810169614 A CN200810169614 A CN 200810169614A CN 101477872 A CN101477872 A CN 101477872A
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Abstract
The invention provides a coil type winding component which can prevent short circuit of coils near to a joint part without complicating structure and reducing winding density of coils. The coil type winding component (10) is composed of the following components: a core (12) having a first flange part (16) and a second flange part (18) at two ends of a core winding part (14); a first coil (28) and a second coil (30); and terminal electrodes (24A, 26A, 24B, 26B). Convex steps (20, 22) are formed at the inner surface (17) of the first flange part (16) near to a first side face of the core winding part (14) and at the inner surface (19) of the second flange part (18) near to a second side face of the core winding part (14). One end (28A) at one side of the first coil (28) is fixed on the terminal electrode (24A) through the top of the step (20), the end (30A) at the other side is connected on the terminal electrode (26B). Therefore, near to the joint part, a certain distance capable of insulating electricity is arranged between coils (28, 30) so as to prevent short circuit.
Description
Technical field
The present invention relates on two ends have the volume core of flange part, be wound with the winding wire type coil component of the 1st and the 2nd spiral, further relate to the improvement of insulating properties between spiral particularly.
Background technology
The common mode choke that is wound with two spirals on the volume core of drum type core is used to its anti-noise parts as various electronic instruments.The structure of winding wire type coil component in the past is: have core components, this core components comprises the volume core that is wound with spiral and is configured in the flange part at its two ends, the end that is wound on the spiral on the above-mentioned volume core is connected (for example, following patent documentation 1) on the terminal electrode that is formed on the above-mentioned flange part.
[patent documentation 1] TOHKEMY 2004-63697 communique
Usually, above-mentioned spiral coats processing to wire rods such as copper cash through insulating and constitutes, and its end is bonded on the terminal electrode by methods such as thermo-compressed, near this junction surface, peel off because above-mentioned insulating coating material melts, thus the position of two spirals near the time may be short-circuited., in order to prevent near the wire rod short circuit junction surface, and spiral was retracted to reduce the rolling density of two spirals in the past, complicated but structure becomes, can not obtain high characteristic.
Summary of the invention
The present invention is conceived to the problems referred to above, and purpose is to provide a kind of winding wire type coil component, and it can not make structure become complicated or not make under the situation that the rolling density of spiral reduces, and prevents near the spiral short circuit the junction surface.
To achieve these goals, winding wire type coil component of the present invention has: the core that is provided with the 1st and the 2nd flange part at the two ends of volume core; The the 1st and the 2nd spiral of on above-mentioned volume core, reeling; Be formed on above-mentioned each flange part and be connected with the terminal electrode of the end of above-mentioned each spiral respectively, it is characterized in that: near the 1st flange part of the 1st side of above-mentioned volume core and be respectively equipped with the step of convex near the 2nd flange part of the 2nd side of above-mentioned volume core, and, the end of one side of a spiral in the above-mentioned the 1st or the 2nd spiral is connected on the above-mentioned terminal electrode by the top of the step of the convex of the 1st flange part of the 1st side of close above-mentioned volume core, the end of one side of another spiral is not connected on the above-mentioned terminal electrode by above-mentioned step, the end of the opposite side of above-mentioned another spiral is connected on the above-mentioned terminal electrode by the top of the step of the convex of the 2nd flange part of the 2nd side of close above-mentioned volume core, and the end of the opposite side of a described spiral is not connected on the above-mentioned terminal electrode by above-mentioned step.Thus, realize above-mentioned purpose.
Winding wire type coil component of the present invention, be provided with the 1st and the 2nd spiral of reeling on the volume core of core of the 1st and the 2nd flange part at two ends, the end of this spiral is connected with terminal electrode on being formed on above-mentioned flange part, wherein, near the 1st flange part of the 1st side of above-mentioned volume core and be respectively equipped with the step of convex near the 2nd flange part of the 2nd side of above-mentioned volume core, the step of this convex is used to form the distance that can make electric insulation between the above-mentioned the 1st and the 2nd spiral.And, the end of one side of a spiral in the above-mentioned the 1st or the 2nd spiral is connected on the above-mentioned terminal electrode by the top of the step of the convex of the 1st flange part of the 1st side of close above-mentioned volume core, and the end of a side of another spiral is not connected on the above-mentioned terminal electrode by above-mentioned step.Equally, the end of the opposite side of above-mentioned another spiral is connected on the above-mentioned terminal electrode by the top of the step of the convex of the 2nd flange part of the 2nd side of close above-mentioned volume core, and the end of the opposite side of a described spiral is not connected on the above-mentioned terminal electrode by above-mentioned step.Therefore, become complicated or do not make under the situation that the rolling density of spiral reduces, just can increase and the distance between near the spiral the junction surface of terminal electrode, obtain to prevent the effect of the 1st and the 2nd spiral short circuit at the structure of drawing that does not make spiral.
A main mode is, the step of above-mentioned convex has outstanding and do not reach the overhang of the side of above-mentioned flange part from the side of above-mentioned volume core, and is formed in the height dimension scope of side of above-mentioned volume core.Thus, can easily make the end of a spiral step up the step of above-mentioned convex.
In addition, other main modes are, are provided with the foot of separation on above-mentioned flange part, and, be provided with the terminal electrode of the end of connection the above-mentioned the 1st or the 2nd spiral on one in the foot that separates, in another foot, be provided with the terminal electrode of the end that connects another spiral.Other mode is to make the shape of foot of above-mentioned separation or at least one side in the size different.
Other modes that have again are that the side of above-mentioned volume core and the top of step are continuous by inclined-plane or curved surface.Further mode is side bending in axial cross section of above-mentioned volume core.Have, above-mentioned step has the above-mentioned the 1st and the width more than 1/2 and the height of the diameter of the 2nd spiral again.Further mode is to make between the flange part at above-mentioned two ends by tabular magnetic core binding.According to following detailed explanation and the clear and definite above-mentioned and other purpose of the present invention of accompanying drawing, feature, advantage.
Description of drawings
Fig. 1 is the figure of expression embodiments of the invention 1, Fig. 1 (A) is the stereoscopic figure of winding wire type coil component, Fig. 1 (B) is the vertical view of above-mentioned winding wire type coil component, Fig. 1 (C-1) is the vertical view of core, Fig. 1 (C-2) is the end view of core, and Fig. 1 (D) is the cutaway view that above-mentioned (C-2) cut off and observe from the direction of arrow along the #A-#A line.
Fig. 2 is the figure of expression embodiments of the invention 2, and Fig. 2 (A-1) is a stereogram, and Fig. 2 (A-2) is a vertical view, and Fig. 2 (B) is the vertical view of variation, and Fig. 2 (C) is the stereoscopic figure of variation.
Fig. 3 is the figure of expression other embodiment of the present invention.
Fig. 4 is the figure of expression other embodiment of the present invention.
Symbol description
10: winding wire type coil component
12,12A: core
14: the volume core
14A, 14B, 16A, 18A: side
16,18: flange part
17,19: inner surface
20,22: step
24A, 24B, 26A, 26B: terminal electrode
28,30: spiral
28A, 28B, 30A, 30B: end
40: winding wire type coil component
42,44: flange part
46,48: recess
50A, 50B, 52A, 52B: foot
54A, 54B, 56A, 56B: terminal electrode
58: tabular magnetic core
60: winding wire type coil component
70,90,110,130,150,160,170,190: core
72,92,112,132,152,162,172,192: the volume core
74,76,94,96,114,116,134,136: flange part
78A, 78B: bend
80、82、98、100、118、120、138、140、154、156、164、166、
174,176,178,180,194,196: step
98A, 100A: curved surface
112A, 112B, 132A, 132B: side
138A, 140A: inclined-plane
Embodiment
Below, describe enforcement best mode of the present invention in detail based on embodiment.
(embodiment 1)
At first, with reference to Fig. 1 embodiments of the invention 1 are described.Fig. 1 (A) is the stereoscopic figure of the winding wire type coil component of present embodiment, Fig. 1 (B) is a vertical view of observing above-mentioned (A) from the direction of arrow F1, Fig. 1 (C-1) is a vertical view of observing core from the direction of arrow F1, Fig. 1 (C-2) is a side view of observing above-mentioned core from the direction of arrow F2, and Fig. 1 (D) is the cutaway view that above-mentioned (C-2) cut off and observe along the direction of arrow along the #A-#A line.As shown in Figure 1, the winding wire type coil component 10 of present embodiment is made of following parts: the core 12 that has the 1st flange part 16 and the 2nd flange part 18 at the two ends of volume core 14; Be wound on the 1st spiral 28 and the 2nd spiral 30 on the above-mentioned volume core 14; Be formed on terminal electrode 24A and 26A on the 1st side 16A of above-mentioned flange part 16; Be formed on terminal electrode 26B, 28B on the 2nd side 18A of above-mentioned flange part 18.
On the 1st side 14A of the volume core 14 of above-mentioned core 12, shown in Fig. 1 (C-1), be formed with the step 20 of convex at position near the inner surface 17 of the 1st flange part 16, this step 20 has from the 1st side 14A of above-mentioned volume core 14 outstanding but do not arrive the overhang of the side of above-mentioned flange part 16, and forms in the scope of the height dimension of the 1st side 14A of above-mentioned volume core 14.In addition, on the 2nd side 14B of above-mentioned volume core 14, be formed with the step 22 of convex at position near the inner surface 19 of the 2nd flange part 18, this step 22 has from the 2nd side 14B of above-mentioned volume core 14 outstanding but do not arrive the overhang of the side of above-mentioned flange part 18, and forms in the scope of the height dimension of the 2nd side 14B of above-mentioned volume core 14.Rolling up as constituted above on the core 14, on same direction, be wound with the 1st spiral 28 and the 2nd spiral 30.In addition, as long as can access desirable characteristic, following the example of of the interval of the 1st spiral 28 and the 2nd spiral 30 can be arbitrarily.The end 28A of one side of above-mentioned the 1st spiral 28 is fixed on the terminal electrode 24A in the mode at the top by above-mentioned step 20, and the end 28B of opposite side is connected on the above-mentioned terminal electrode 24B.Equally, the end 30A of a side of the 2nd spiral 30 is connected on the terminal electrode 26A, and the end 30B of opposite side is connected on the terminal electrode 26B in the mode by above-mentioned step 22.
Above-mentioned spiral end 28A, 28B, 30A, 30B and terminal electrode 24A, 24B, 26A, 28B for example engage by methods such as thermo-compressed, at this moment, peel off the clad material of the wire rod of spiral 28,30.But, in the present embodiment, near above-mentioned junction surface,,, can prevent short circuit so can become electric insulation because a spiral in the 1st spiral 28 and the 2nd spiral 30 is positioned in the mode by step 20 and step 22.In addition, above-mentioned step 20,22 for example forms the width more than 1/2 and the 1/2 above height of the diameter of the wire rod with above-mentioned spiral 28,30.
Next, the manufacturing sequence of the winding wire type coil component 10 of present embodiment is described.The ceramic powders that is mixed with adhesive is squeezed into roughly cuboid by mould, carries out cut subsequently, the core base substrate of not fired.Perhaps, be squeezed into the shape of regulation, the core base substrate of not fired by mould.And, the core of not firing is fired with base substrate, obtain the core base substrate.Next, core with the bonding station of the 1st and the 2nd flange part of base substrate on the laggard electroplating of coating thickener, form terminal electrode 24A, 24B, 26A, 26B.And, to the 1st and the 2 two lead carry out spiral, and obtain above-mentioned winding wire type coil component 10 on above-mentioned terminal electrode 24A, 24B, 26A, the 26B by the end crimping is bonded on.At this moment, as mentioned above, with the end of a side of the 1st spiral 28 with the mode by step 20 and with the end of the opposite side of the 2nd spiral 30 to locate by the mode of step 22.Pottery as above-mentioned core 12 for example adopts NiZn ferrite, MnZn ferrite, aluminium oxide, for example adopts the material that plates Ni, Sn on Ag as terminal electrode 24A, 24B, 26A, 26B.In addition, the wire rod employing Cu as above-mentioned spiral 28,30 for example adopts polyurethane as its clad material.
Like this, according to embodiment 1, have on the above-mentioned volume core 14 of core 12 of the 1st flange part 16 and the 2nd flange part 18 at the two ends of volume core 14, the step 20 of convex and the step 22 of convex are located at inner surface 19 1 sides of above-mentioned the 2nd flange part 18 of the 2nd side 14B of the above-mentioned volume core 14 of inner surface 17 1 sides of above-mentioned the 1st flange part 16 of the 1st side 14A and above-mentioned core 12 respectively.And, the top of end 30B by above-mentioned step 20,22 of the opposite side of the end 28A of a side that is wound on the 1st spiral 28 on the above-mentioned volume core 14 and the 2nd spiral 30 is connected on terminal electrode 24A, the 26B, the end 30A of a side of the end 28B of opposite side of the 1st spiral 28 and the 2nd spiral 30 is not connected on terminal electrode 24B, the 26A by above-mentioned step 20,22.Therefore, can make spiral 28,30 to draw structure uncomplicated and can not reduce rolling density, can increase the distance between near the spiral the junction surface of itself and terminal electrode, even and have an effect that the insulating coating material of peeling off above-mentioned spiral 28,30 also can prevent short circuit.
(embodiment 2)
Below, with reference to Fig. 2 embodiments of the invention 2 are described.Fig. 2 (A-1) is the stereogram of the winding wire type coil component of embodiment 2, Fig. 2 (A-2) is a vertical view, Fig. 2 (B) is the vertical view of winding wire type coil component of the variation of present embodiment, and Fig. 2 (C) is the stereoscopic figure of the winding wire type coil component of expression variation.In addition, to marking identical Reference numeral with the foregoing description 1 identical and corresponding component parts.At first, the structure of the winding wire type coil component 40 shown in Fig. 2 (A-1) reaches (A-2) is as follows, on core 12A, be wound with spiral 28 and spiral 30, have step 20 and step 22 on the volume core 14 of described core 12A and have flange part 42 and 44 at the two ends of described core 12A.On above-mentioned flange part 42, be formed with 1 group of recess 46 that is provided with by substantial middle and the separated 50A of foot, 50B at the interarea of side when installation (for example, bottom surface side).On the flange part 44 of opposite side, be formed with similarly 1 group by the recess 48 that is provided with in the substantial middle of an above-mentioned interarea the separated 52A of foot, 52B.And, on the above-mentioned 50A of foot, 50B, 52A, 52B, being formed with terminal electrode 54A, 56A, 54B, 56B, the above-mentioned 50A of foot, 50B, 52A, 52B are connected with the 1st and the 2nd spiral end 28A, 30A, 28B, 30B respectively.
Above-mentioned spiral 28,30 and the foregoing description 1 are similarly, the end 28A of one side of the 1st spiral 28 is fixed on the terminal electrode 54A by the top of above-mentioned step 20, and the end 30B of the opposite side of the 2nd spiral 30 is connected on the terminal electrode 56B by the top of above-mentioned step 22.Like this,, on flange part 42,44, be provided with recess 46,48 according to present embodiment and since be the bonding part that will be connected with the spiral end from structure, therefore, compare with the foregoing description 1, more difficultly be short-circuited at the junction surface.In addition, winding wire type coil component 60 shown in Fig. 2 (B) is such, makes varying in size of above-mentioned 50A of foot and 50B, and by making varying in size of above-mentioned 52A of foot and 52B, thus with above-mentioned Fig. 2 (A-1) and (A-2) shown in embodiment compare near the more difficult contact junction surface.And shown in Fig. 2 (C), the upper surface when the installation of the winding wire type coil component 40 shown in above-mentioned Fig. 2 (A) can also be provided with tabular magnetic core 58 and form closed magnetic circuit.As shown in the figure, link by tabular magnetic core 58 between the flange part 42,44, thus, when using the electronic unit apparatus for automatically loading winding wire type coil component 40 to be equipped on the circuit substrate etc., can prevent that the parts adsorption mouth of above-mentioned loading attachment from the absorption mistake taking place.In addition, can reduce the deflection of the flux of drum type core.
In addition, the invention is not restricted to the foregoing description, in the scope that does not break away from technological thought of the present invention, can append various changes.For example, comprise following content.
(1) shape shown in the foregoing description, size are examples, can suitably change as required.For example, in the foregoing description 1, the volume core 14 of core 12 is formed roughly rectangular shape, still, the core 70 shown in Fig. 3 (A) is such, and the side that also can have the volume core 72 of flange part 74,76 at two ends forms bend 78A, 78B.In addition, above-mentioned bend 78A and 78B are formed spiral the coiling width W about 0.1～4%, thus, can make the fixing-stable of the spiral 28,30 in step 80 and the step 82.In addition, the core 90 shown in Fig. 3 (B) is such, have at two ends on the volume core 92 of flange part 94,96 step 98,100 is set, and, can make the top of this step 98,100 and above-mentioned volume core 92 continuous by curved surface 98A, 100A.And, reel along above-mentioned curved surface 98A, 100A by making the spiral on the top that is not fixed on above-mentioned step 98,100, can increase the contact area with spiral, thereby stably fix.In addition, the curvature of above-mentioned curved surface 98A, 100A for example is about 10～100 μ m.
(2) in the foregoing description 1, in the roughly length range of height dimension of side 14A, the 14B of volume core 14, be formed with step 20,22, but this only is an example, can suitably change as required.For example, in the example of the core 110 shown in Fig. 3 (C-1) reaches (C-2), two ends at volume core 112 have flange part 114,116, and, on the bight of the 1st side 112A, be provided with step 118, on the bight of the 2nd side 112B, be provided with step 120 in addition near the end of the 2nd flange part 116 near the end of the 1st flange part 114.In addition, in the example of the core 130 shown in Fig. 3 (D-1) reaches (D-2), two ends at volume core 132 have the 1st flange part 134 and the 2nd flange part 136, and, the substantial middle portion near the end of the 1st flange part 134 at the 1st side 132A is provided with step 138, in addition, the substantial middle portion near the end of the 2nd flange part 136 at the 2nd side 132B is provided with step 140.In addition, in illustrated embodiment, above-mentioned step 138,140 is continuous by inclined- plane 138A, 140A and above-mentioned volume core 132.By such inclined- plane 138A, 140A are set, with the example shown in above-mentioned Fig. 3 (B) similarly can make the fixing-stable of wire rod owing to increased the contact area of spiral.
(3) in the foregoing description 1, the cross section of volume core 14 is rectangle roughly, and still, this is an example, can suitably change as required.For example, the core 150 shown in Fig. 4 (A) is such, has on the volume core 152 of octagonal cross sectional shape roughly, and 1 rank 154,156 of organizing a performance can relatively be set.In addition, the core 160 shown in Fig. 4 (B) is such, is roughly the outer peripheral face of oval-shaped volume core 162 in the cross section, and the planar step of 1 suite 164,166 can relatively be set.And the core 170 shown in Fig. 4 (C) is such, is roughly in the cross section on four protuberances of criss-cross volume core 172 and is provided with step 174,176,178,180, can utilize arbitrarily fixedly spiral of step.In addition, the core 190 shown in Fig. 4 (D) is such, has on the volume core 192 that is forming the cross sectional shape of the protuberance of semicircle shape roughly on the rectangular minor face roughly, can divide at this long leg of rolling up core 192 1 rank 194,196 of organizing a performance are set.Certainly, the cross sectional shape of volume core shown in Fig. 4 (A)～(D) and step also is an example, as long as can access same effect, can suitably change as required.
(4) material shown in the foregoing description also is an example, can utilize known various material.
(5) manufacturing sequence shown in the foregoing description also is an example, can suitably change as required.
(6) winding number of the spiral shown in the foregoing description 28,30 also is an example, can suitably change as required.
(7) the tabular magnetic core 58 shown in the foregoing description 2 also is an example, can be located on the winding wire type coil component 10 of embodiment 1.
(8) coil component of the present invention be working signal good make use-case, but also can be applicable to the purposes of all jumbo image shakes transmission.
Industrial applicibility
According to the present invention, be provided with the core of the 1st and the 2nd flange part at the two ends of volume core, at the volume core Be wound with the 1st and the 2nd spiral in the section, the end of this spiral and the end that is located on above-mentioned each flange part Sub-electrode connects, near the 1st flange part of the 1st side of above-mentioned volume core and above-mentioned volume core The 2nd flange part of the 2nd side near, be respectively equipped with the step of convex, the step of this convex is used In formation make between the above-mentioned the 1st and the 2nd spiral can electric insulation distance, and, with the above-mentioned the 1st The end of the end of one side of spiral and the opposite side of the 2nd spiral is by the top branch of above-mentioned step Be not connected on the above-mentioned terminal electrode. Thus, owing to can become at the structure of drawing that does not make spiral Complicated or do not reduce in the situation of rollback density of spiral, increase attached at the junction surface with terminal electrode Therefore distance between near spiral, can be applicable to winding wire type coil component. Especially, be applicable to Common mode choke.
Claims (8)
1. a winding wire type coil component has: the core that is provided with the 1st and the 2nd flange part at the two ends of volume core; The the 1st and the 2nd spiral of on described volume core, reeling; Be formed on described each flange part and be connected with the terminal electrode of the end of described each spiral respectively, it is characterized in that:
Near the 1st flange part of the 1st side of described volume core and be respectively equipped with the step of convex near the 2nd flange part of the 2nd side of described volume core, and,
The end of one side of a spiral in the described the 1st or the 2nd spiral is connected on the described terminal electrode by the top of the step of the convex of the 1st flange part of the 1st side of close described volume core, the end of one side of another spiral is not connected on the described terminal electrode by described step
The end of the opposite side of described another spiral is connected on the described terminal electrode by the top of the step of the convex of the 2nd flange part of the 2nd side of close described volume core, and the end of the opposite side of a described spiral is not connected on the described terminal electrode by described step.
2. winding wire type coil component as claimed in claim 1, it is characterized in that: the step of described convex has outstanding and do not reach the overhang of the side of described flange part from the side of described volume core, and is formed in the height dimension scope of side of described volume core.
3. winding wire type coil component as claimed in claim 1, it is characterized in that: the foot that on described flange part, is provided with separation, and, be provided with the terminal electrode that connects an end in the described the 1st and the 2nd spiral on one in the foot that separates, in another foot, be provided with the terminal electrode of the end that connects another spiral.
4. winding wire type coil component as claimed in claim 3 is characterized in that: at least one side in the shape of the foot of described separation or the size is different.
5. as each described winding wire type coil component of claim 1～4, it is characterized in that: the side of described volume core and the top of step are continuous by inclined-plane or curved surface.
6. as each described winding wire type coil component of claim 1～4, it is characterized in that: the side of described volume core is crooked in axial cross section.
7. as each described winding wire type coil component of claim 1～5, it is characterized in that: described step has the described the 1st and the width more than 1/2 and the height of the diameter of the 2nd spiral.
8. as each described winding wire type coil component of claim 1～6, it is characterized in that: link by tabular magnetic core between the flange part at described two ends.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-265370 | 2007-10-11 | ||
| JP2007265370 | 2007-10-11 | ||
| JP2007265370A JP4796560B2 (en) | 2007-10-11 | 2007-10-11 | Wire-wound coil parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477872A true CN101477872A (en) | 2009-07-08 |
| CN101477872B CN101477872B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101696147A Active CN101477872B (en) | 2007-10-11 | 2008-10-09 | Winding wire type coil component |
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| Country | Link |
|---|---|
| JP (1) | JP4796560B2 (en) |
| CN (1) | CN101477872B (en) |
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| JP3960977B2 (en) * | 2003-02-17 | 2007-08-15 | 株式会社フォノン明和 | Common mode coil |
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- 2007-10-11 JP JP2007265370A patent/JP4796560B2/en not_active Expired - Fee Related
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2008
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2009094389A (en) | 2009-04-30 |
| CN101477872B (en) | 2012-05-23 |
| JP4796560B2 (en) | 2011-10-19 |
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