WO2010137492A1 - 車載用ノイズフィルタ - Google Patents
車載用ノイズフィルタ Download PDFInfo
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- WO2010137492A1 WO2010137492A1 PCT/JP2010/058364 JP2010058364W WO2010137492A1 WO 2010137492 A1 WO2010137492 A1 WO 2010137492A1 JP 2010058364 W JP2010058364 W JP 2010058364W WO 2010137492 A1 WO2010137492 A1 WO 2010137492A1
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- Prior art keywords
- noise filter
- coil
- vehicle
- capacitors
- pair
- Prior art date
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- 239000003990 capacitor Substances 0.000 claims abstract description 120
- 230000005684 electric field Effects 0.000 claims abstract description 51
- 230000008878 coupling Effects 0.000 claims abstract description 33
- 238000010168 coupling process Methods 0.000 claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 claims abstract description 33
- 238000004804 winding Methods 0.000 claims description 16
- 210000000078 claw Anatomy 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Classifications
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
Definitions
- the present invention relates to an in-vehicle noise filter, and more particularly to an in-vehicle noise filter with improved noise attenuation performance even in an FM radio band (ultra-high frequency band).
- noise filters have been developed to remove noise from on-board electrical components.
- the rear glass of a vehicle is often provided with an anti-fogging heat ray and a radio antenna, but noise superimposed on the wiring for supplying power to the heat wire does not affect the AM radio, for example.
- Patent Document 1 discloses a noise filter that can be reduced in size and can further reduce heat dissipation.
- This filter circuit functionally allows direct current to pass, and the maximum noise suppression amount in the AM radio band (medium / short wave band). (Passing loss).
- the noise suppression amount in the AM radio band is sufficient, but the noise suppression amount in the FM radio band may not be sufficient. This is because the noise on the input side leaks to the output side without passing through the filter circuit due to the influence of electric field coupling between the input and output terminals of the noise filter, and a sufficient amount of noise attenuation cannot be secured. .
- such a circuit element for a vehicle-mounted noise filter is configured as a ⁇ -type filter circuit composed of a capacitor-coil-capacitor, and two capacitors are arranged opposite to each other due to the limitation of miniaturization.
- a filter circuit In the vicinity of the AM radio band, such a filter circuit has a configuration in which high attenuation is obtained by series resonance between the capacitor body and the capacitor lead wire.
- the capacitor portion becomes an equivalent series inductor.
- the coil portion shows a high inductance value in the AM radio band by using a magnetic core, but at a high frequency, the inductance is lowered due to the influence of the decrease in the magnetic permeability of the magnetic core, and the coupling capacitance between the coils appears. Therefore, it is equivalent to a parallel circuit of a coil and a coupling capacitor.
- the configuration of a ⁇ -type filter circuit consisting of a capacitor, a coil and a capacitor is not used, but an equivalent series inductor of the capacitor unit, an equivalent parallel circuit of an inductor and a coupling capacitor of the coil unit, It becomes a structure called an equivalent series inductor of the capacitor part.
- the pair of capacitors on the input side and output side of the noise filter are arranged opposite to each other on mounting, and as a result, they behave as coupled lines that are terminated and short-circuited. It was not enough to design the attenuation of the series inductor alone.
- the present invention provides an in-vehicle noise filter that suppresses electric field coupling between a pair of capacitors in the FM radio band and can exhibit the original noise attenuation performance of the noise filter circuit in the FM radio band. It is something to try.
- a vehicle-mounted noise filter is arranged such that a ground plate for grounding a vehicle body, a coil around which a conductive wire is wound, and a coil are sandwiched between the ⁇ -type A pair of capacitors that are electrically connected to the coil and the ground plate so as to constitute a filter circuit, and an electric field coupling between the pair of capacitors are interposed between the pair of capacitors and grounded to the ground plate.
- a conductive shielding plate is arranged such that a ground plate for grounding a vehicle body, a coil around which a conductive wire is wound, and a coil are sandwiched between the ⁇ -type A pair of capacitors that are electrically connected to the coil and the ground plate so as to constitute a filter circuit, and an electric field coupling between the pair of capacitors are interposed between the pair of capacitors and grounded to the ground plate.
- the conductive shielding plate may be interposed between each of the pair of capacitors and the coil.
- the coil conductor may be wound in a winding direction in which a leakage electric field is generated in a direction that cancels the electric field of electric field coupling generated between the pair of capacitors.
- the coil when the capacitor connected to the input terminal side is arranged on the right side in the axial direction of the coil when viewed from the input terminal of the vehicle-mounted noise filter, the coil is wound clockwise and the capacitor connected to the input terminal side is When arranged on the left side in the direction, the coil may be wound left-handed.
- the pair of capacitors may be arranged so that the surfaces of each capacitor having a small area face each other so that the facing area becomes small.
- the pair of capacitors may be arranged to face each other so as to sandwich the coil in parallel to a direction perpendicular to the axis of the coil.
- the ground plate may have an overhanging portion for fixing to the vehicle body, and at least a part of the overhanging portion may be disposed between a pair of capacitors disposed to face each other.
- the overhanging portion may be configured so that the distance to the connection point where the pair of capacitors are connected to the ground plate is made equal.
- the coil may be wound so that the conductive wires have the same direction and height of the ends of the conductive wires at both ends of the coil.
- the overhanging portion may have a temporary fastening claw that is locked to a temporary fastening hole provided in the vehicle body.
- the in-vehicle noise filter of the present invention has an advantage that high noise attenuation performance can be exhibited even in the FM radio band by suppressing electric field coupling between a pair of capacitors.
- FIG. 1 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the first embodiment of the present invention.
- FIG. 2 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the second embodiment of the present invention.
- FIG. 3 is a graph of input / output characteristics with respect to frequency of the in-vehicle noise filter of the present invention.
- FIG. 4 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the third embodiment of the present invention.
- FIG. 5 is a top view for explaining the electric field direction of the in-vehicle noise filter of the present invention.
- FIG. 6 is a top view for explaining an example in which the winding direction of the coil and the arrangement position of the capacitor of the in-vehicle noise filter of the present invention shown in FIG. 5 are reversed.
- FIG. 7 is a graph of the input / output characteristics with respect to the frequency of the in-vehicle noise filter for explaining the influence on the input / output characteristics due to the difference in the coil winding direction.
- FIG. 8 is a top view for explaining a state in which the coil is wound counterclockwise while the capacitor is disposed in the in-vehicle noise filter shown in FIG.
- FIG. 9 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the fourth embodiment of the present invention.
- FIG. 10 is a perspective view for explaining an example of the protruding portion of the ground plate of the in-vehicle noise filter of the present invention.
- FIG. 1 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the first embodiment of the present invention.
- FIG. 1 (a) is a top view thereof, and FIG. FIG.
- the on-vehicle noise filter of the first embodiment of the present invention mainly includes a ground plate 1, a coil 2, a pair of capacitors 3 a and 3 b, and a conductive shielding plate 4. These components are housed in a housing 30 made of an insulating material.
- Ground plate 1 is provided for vehicle body grounding, and is fixed to a vehicle body (not shown) and electrically connected when a noise filter is mounted.
- the ground plate 1 is disposed on the back surface side of the housing 30 and is provided so as to cover substantially the entire back surface of the housing 30.
- the ground terminals 15 and 16 are electrically connected to the ground plate 1.
- the ground terminals 15 and 16 are disposed inside the housing 30 through predetermined through holes provided in the housing 30.
- the ground terminals 15 and 16 may be formed by bending and raising a part of the plate-like ground plate 1 at a right angle, or may be electrically connected to the ground plate 1 by soldering or the like.
- the ground plate 1 is provided with an overhanging portion 12, and a connection hole 13 through which a screw (not shown) passes is provided in the vehicle body.
- a vehicle-mounted noise filter is screwed to the vehicle body through the connection hole 13.
- the coil 2 is formed by winding a conducting wire.
- the coil 2 in the illustrated example increases the inductance by winding a conducting wire around a magnetic core.
- One terminal of the coil 2 is connected to the input terminal 10 of the noise filter, and the other terminal is connected to the output terminal 20 of the noise filter. Note that the input terminal 10 and the output terminal 20 are electrically connected to wiring for connecting to the outside.
- the pair of capacitors 3a and 3b constitute a ⁇ -type filter circuit together with the coil 2.
- the pair of capacitors 3a and 3b are arranged so as to sandwich the coil 2, respectively. More specifically, in the illustrated example, the pair of capacitors 3 a and 3 b are arranged so as to sandwich the coil 2 in parallel with the axial direction of the coil 2.
- one terminal of the capacitor 3 a is connected to the input terminal 10, and the other terminal is connected to the ground terminal 15.
- One terminal of the capacitor 3 b is connected to the ground terminal 16, and the other terminal is connected to the output terminal 20.
- one terminal of the capacitor 3a is electrically connected to one terminal of the coil 2 via the input terminal 10
- the other terminal of the capacitor 3b is electrically connected to the other terminal of the coil 2 via the output terminal 20.
- a ⁇ -type filter circuit composed of a capacitor-coil-capacitor is configured.
- the conductive shielding plate 4 which is the most characteristic part of the present invention is provided to shield the electric field coupling between the pair of capacitors 3a and 3b.
- the conductive shielding plate 4 is grounded to the ground plate 1 and is electrically connected to the ground plate 1.
- the conductive shielding plate 4 is disposed inside the housing 30 through a predetermined through hole provided in the housing 30. Similar to the ground terminals 15 and 16 described above, the conductive shielding plate 4 may be formed by bending a part of the ground plate 1 at a right angle and standing up, or electrically connected to the ground plate 1 by soldering or the like. It may be connected.
- the conductive shielding plate 4 only needs to be interposed between the pair of capacitors 3a and 3b.
- a conductive shielding plate 4 is provided so as to be interposed between the capacitor 3 a and the coil 2.
- the present invention is not limited to this, and the conductive shielding plate 4 may be provided so as to be interposed between the capacitor 3 b and the coil 2.
- the conductive shielding plate 4 is provided to shield the electric field coupling between the pair of capacitors 3a and 3b, increasing the height of the conductive shielding plate 4 can further increase the electric field coupling shielding rate. Is possible. Furthermore, the conductive shielding plate 4 may be further folded so as to rise from the ground plate 1 and cover the upper part of the capacitor.
- the pair of capacitors may be arranged in such an orientation that the surfaces whose height direction is low are opposed to each other so that their facing areas are small. This will be described later. Thereby, the electric field coupling between the pair of capacitors can be reduced. Further, they may not be arranged completely opposite to each other, but may be slightly shifted left and right as in the illustrated example.
- FIG. 2 is a schematic diagram for explaining an arrangement example of each component of the in-vehicle noise filter according to the second embodiment of the present invention.
- FIG. 2 (a) is a top view thereof, and FIG. FIG. In the figure, the same reference numerals as those in FIG. 1 denote the same parts.
- the in-vehicle noise filter of the second embodiment of the present invention is different from that of the first embodiment in that a conductive shielding plate is interposed between each of a pair of capacitors and coils. That is, the second embodiment includes two conductive shielding plates 4a and 4b, which are disposed between the capacitor 3a and the coil 2 and between the capacitor 3b and the coil 2, respectively. Similarly to the first embodiment, the conductive shielding plates 4a and 4b are also grounded to the ground plate 1 through predetermined through holes provided in the housing.
- the in-vehicle noise filter according to the second embodiment of the present invention is configured to shield the electric field coupling between the capacitors using the two conductive shielding plates as described above. Therefore, in the second embodiment, the electric field coupling between the capacitors can be shielded more reliably than in the case of the first embodiment.
- FIG. 3 is a graph of input / output characteristics with respect to frequency of the in-vehicle noise filter of the present invention.
- the input / output characteristics shown in FIG. 3 are those of the in-vehicle noise filter shown in FIG. 2.
- the characteristics when no conductive shielding plate is provided are indicated by gray lines.
- the in-vehicle noise filter of the present invention provided with the conductive shielding plate has a reduced attenuation compared to the case without the conductive shielding plate. That is, it can be seen that the electric field coupling between the pair of capacitors can be shielded by the conductive shielding plate.
- the illustrated input / output characteristics are merely examples, and are influenced by the characteristics of the filter circuit. Therefore, noise attenuation characteristics can be further improved by optimizing the filter constant.
- the heat generated in the coil when a current is passed to the conductive shielding plate It is possible to transmit and dissipate heat with the ground plate. Therefore, there is also an effect of reducing heat transfer to the capacitor side. That is, the conductive shielding plate shields electric field coupling and has a heat dissipation effect. As a result, the temperature characteristics of the capacitor can be stabilized.
- the ground terminals 15 and 16 are securely grounded because a potential difference may be generated between the ground terminals 15 and 16 that are electrically grounded.
- grounding is insufficient, a potential difference is generated between the conductive shielding plates 4a and 4b, so that the effect of shielding the electric field is reduced.
- FIGS. 4A and 4B are schematic views for explaining an arrangement example of each component of the in-vehicle noise filter according to the third embodiment of the present invention.
- FIG. 4A is a top view thereof, and FIG. FIG. In the figure, the same reference numerals as those in FIGS. 1 and 2 denote the same components.
- the on-vehicle noise filter of the third embodiment of the present invention is different from the first and second embodiments in that the protruding portion of the ground plate is arranged symmetrically with the coil interposed therebetween.
- the ground plate 1 is provided so as to cover substantially the entire back surface of the housing 30, and the overhanging portion 12 for fixing to the vehicle body is only on one side (the upper side in FIGS. 1 and 2). It was provided.
- the ground plate 1 covers substantially the entire back surface of the housing 30 and is provided with protruding portions 12 a and 12 b symmetrically across the coil 2.
- connection holes 13a and 13b for screwing to the vehicle body are provided in the overhang portions 12a and 12b, respectively, and are securely screwed to the vehicle body via the connection holes 13a and 13b.
- FIG. 5 is a top view for explaining the electric field direction of the in-vehicle noise filter of the present invention.
- the same reference numerals as those in FIG. 2 denote the same parts.
- the vehicle-mounted noise filter shown in FIG. 5 is the same as that of the second embodiment shown in FIG. 2, and is an electric field direction attached thereto.
- the electric field E C can be canceled.
- the winding direction of the coil conductor 2 a pair of capacitors 3a, if wound as field coupling field H such as leakage electric field E L is generated in a direction to cancel the electric field E C of generated generated between 3b, It becomes possible to suppress electric field coupling between the pair of capacitors 3a and 3b.
- the electric field is coupled in the direction from the capacitor 3a connected to the input terminal 10 to the capacitor 3b connected to the output terminal 20, the axis of the coil 2 as viewed from the input terminal 10 as shown in FIG.
- the coil 2 may be wound in the left-hand direction.
- a magnetic field is generated from the input terminal 10 in the direction of the output terminal 20, the leakage electric field E L occurs from the capacitor 3b in the direction of the capacitor 3a.
- FIG. 6 shows a top view for explaining an example in which the coil winding direction and the capacitor arrangement position of the in-vehicle noise filter of the present invention shown in FIG. 5 are reversed.
- the same reference numerals as those in FIG. 5 denote the same components.
- the coil 2 when the capacitor 3 a connected to the input terminal side is arranged on the right side in the axial direction of the coil 2 when viewed from the input terminal 10, the coil 2 may be wound in a right-handed manner.
- the leakage electric field E L occurs from the capacitor 3b in the direction of the capacitor 3a.
- FIG. 7 shows the input / output characteristics when the winding direction of the coil is right-handed and left-handed. More specifically, in the drawing, the case of “right-handed” is the characteristic of the state of the arrangement position of the right-handed coil and capacitor as shown in FIG. In the case of “left-handed”, as shown in FIG. 8, the coil is wound left-handed while maintaining the capacitor placement position of the on-vehicle noise filter shown in FIG. 6, that is, the electric field between the capacitors. This is a characteristic in a state where binding is not suppressed. In order to simplify the phenomenon, an in-vehicle noise filter without a conductive shielding plate was used for the measurement here.
- FIG. 9 is a schematic diagram for explaining an arrangement example of each part of the vehicle-mounted noise filter according to the fourth embodiment of the present invention.
- FIG. 9 (a) is a top view thereof, and FIG. FIG. In the figure, the same reference numerals as those in FIG. 1 denote the same parts.
- the surfaces of the capacitors 3a and 3b having a small area are arranged to face each other so that the pair of capacitors 3a and 3b have a small facing area. That is, the pair of capacitors 3a and 3b are arranged in such an orientation that the low surfaces face each other in the height direction.
- a ceramic capacitor or the like has a wide outer surface and a narrow side surface. By arranging the narrow side surfaces to face each other, the facing area can be reduced. Thereby, the electric field coupling between the pair of capacitors can be further suppressed. Further, by arranging the faces having a small facing area to face each other, it is possible to reduce the thickness of the in-vehicle noise filter.
- a pair of capacitors 3 a and 3 b are arranged to face each other so as to sandwich the coil in a direction perpendicular to the axis of the coil 2.
- the side of the coil parallel to the axial direction of the coil 2 is opened.
- the heat generated by the coil 2 is generally radiated to the side of the coil. Therefore, by opening the side of the coil 2, it is possible to enhance the heat dissipation effect and reduce the heat conduction to the capacitors 3a and 3b.
- the ground plate 1 has the overhang
- the connecting hole 13 of the overhanging portion 12 is arranged so as to bite into the coil 2 side between the pair of capacitors 3a and 3b so as not to interfere with the coil 2. This makes it possible to reduce the size of the in-vehicle noise filter.
- the overhanging portion 12 is configured so that the distance to the connection point where the pair of capacitors 3a and 3b are connected to the ground plate 1 is made equal. That is, the distance from the connection hole 13 of the overhanging portion 12 to the ground terminals 15 and 16 is configured to be equal. More specifically, the relationship between the connection hole 13 of the projecting portion 12 and the ground terminals 15 and 16 is configured to be symmetrical with respect to a center line perpendicular to the axis of the coil 2. As a result, a potential difference between the ground terminals 15 and 16 hardly occurs, and stable grounding can be performed.
- two conductive shielding plates 4a and 4b are disposed between the capacitor 3a and the coil 2, and between the capacitor 3b and the coil 2, respectively. Since the conductive shielding plates 4a and 4b are also equal in distance from the connection hole 13 of the overhanging portion 12, the effect of shielding the electric field can be obtained with certainty. In addition, it is possible to stabilize the temperature characteristics of the capacitor by transferring heat generated from the coil 2 to the conductive shielding plates 4a and 4b.
- the conducting wire wound around the coil 2 is wound so that the direction and height of the end portions of the conducting wire at both ends of the coil 2 are aligned (the direction is 180 degrees opposite).
- the input terminal 10 and the output terminal 20 are arranged in parallel to the axis of the coil 2. As a result, the input and output terminals are symmetrized.
- the ground terminals 15 and 16, the conductive shielding plates 4 a and 4 b, and the coil conductor are arranged so as to be symmetrical with respect to the center line perpendicular to the axis of the coil 2.
- an electrically stable state is obtained between the input and output. Therefore, it is possible to stably reduce the attenuation particularly in the high frequency band without being affected by the coil winding direction and the like.
- the on-vehicle noise filter according to the fourth embodiment of the present invention can greatly reduce the coupling between capacitors, is electrically stable, and can be reduced in size and thickness. is there.
- FIG. 10 is a perspective view for explaining an example of the protruding portion of the ground plate of the in-vehicle noise filter of the present invention.
- the overhanging portion may be provided with a temporary fastening claw 50 that is locked in a temporary fastening hole (not shown) provided in the vehicle body.
- the temporary fastening claw 50 includes a locking portion 51 to be inserted into the temporary fastening hole, and a knob portion 52 to be sandwiched when the temporary fastening claw 50 is removed from the temporary fastening hole as necessary after being inserted into the temporary fastening hole.
- the temporary fastening claws 50 are inserted into temporary fastening holes provided in the vehicle body and temporarily fixed. Then, a screw or the like is screwed into the connection hole 13 and fixed. Thereby, attachment to a vehicle becomes easy. In addition, when a vehicle-mounted noise filter breaks down, etc., it can be easily removed and replaced by pinching the knob 52.
- vehicle-mounted noise filter of the present invention is not limited to the illustrated example described above, and it is needless to say that various modifications can be made without departing from the gist of the present invention.
- a shielding plate that shields electric field coupling between input and output terminals such as Japanese Patent Application No. 2008-138750 by the same person as the present inventor, may be used.
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Abstract
Description
2 コイル
3a,3b コンデンサ
4,4a,4b 導電性遮蔽板
10 入力端子
12,12a,12b 張り出し部
13,13a,13b 接続用孔
15,16 グラウンド端子
20 出力端子
30 筺体
50 仮留め爪
51 係止部
52 つまみ部
Claims (10)
- 車載用ノイズフィルタであって、該車載用ノイズフィルタは、
車両ボディ接地用のグラウンド板と、
導線が巻回されるコイルと、
前記コイルを挟むようにそれぞれ配置され、π型フィルタ回路を構成するようにコイルとグラウンド板にそれぞれ電気的に接続される一対のコンデンサと、
前記一対のコンデンサ間の電界結合を遮蔽するように、一対のコンデンサ間に介在し、グラウンド板に接地される導電性遮蔽板と、
を具備することを特徴とする車載用ノイズフィルタ。 - 請求項1に記載の車載用ノイズフィルタにおいて、前記導電性遮蔽板は、一対のコンデンサとコイルのそれぞれの間に介在することを特徴とする車載用ノイズフィルタ。
- 請求項1又は請求項2に記載の車載用ノイズフィルタにおいて、前記コイルの導線は、一対のコンデンサ間で生じる電界結合の電界を打ち消す方向に漏れ電界が生じるような巻き方向で巻回されることを特徴とする車載用ノイズフィルタ。
- 請求項3に記載の車載用ノイズフィルタにおいて、入力端子側に接続されるコンデンサが車載用ノイズフィルタの入力端子から見てコイルの軸方向右側に配置されるときには前記コイルは右巻きに巻回され、入力端子側に接続されるコンデンサが軸方向左側に配置されるときには前記コイルは左巻きに巻回されることを特徴とする車載用ノイズフィルタ。
- 請求項1に記載の車載用ノイズフィルタにおいて、前記一対のコンデンサは、対向面積が小さくなるように、各コンデンサの面積が小さい面が対向配置されることを特徴とする車載用ノイズフィルタ。
- 請求項5に記載の車載用ノイズフィルタにおいて、前記一対のコンデンサは、コイルの軸に垂直な方向に平行にコイルを挟むように対向配置されることを特徴とする車載用ノイズフィルタ。
- 請求項6に記載の車載用ノイズフィルタにおいて、前記グラウンド板は、車両ボディへ固定するための張り出し部を有し、該張り出し部の少なくとも一部が、対向配置される一対のコンデンサの間に配置されることを特徴とする車載用ノイズフィルタ。
- 請求項5乃至請求項7の何れかに記載の車載用ノイズフィルタにおいて、前記グラウンド板は、車両ボディへ固定するための張り出し部を有し、該張り出し部が、一対のコンデンサがグラウンド板に接続される接続点までの距離が等長化されるよう構成されることを特徴とする車載用ノイズフィルタ。
- 請求項5乃至請求項8の何れかに記載の車載用ノイズフィルタにおいて、前記コイルは、その導線が、コイルの両端の導線の端部の方向及び高さが揃うように巻回されることを特徴とする車載用ノイズフィルタ。
- 請求項1乃至請求項9の何れかに記載の車載用ノイズフィルタにおいて、前記グラウンド板は、車両ボディへ固定するための張り出し部を有し、該張り出し部は、車両ボディに設けられる仮留め孔に係止される仮留め爪を有することを特徴とする車載用ノイズフィルタ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/322,901 US20120081194A1 (en) | 2009-05-29 | 2010-05-18 | Vehicle-Mounted Noise Filter |
CN2010800234894A CN102449904A (zh) | 2009-05-29 | 2010-05-18 | 车载噪声滤波器 |
JP2011515987A JPWO2010137492A1 (ja) | 2009-05-29 | 2010-05-18 | 車載用ノイズフィルタ |
GB1120820.4A GB2482646A (en) | 2009-05-29 | 2010-05-18 | Vehicle-mounted noise filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009131374 | 2009-05-29 | ||
JP2009-131374 | 2009-05-29 |
Publications (1)
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WO2010137492A1 true WO2010137492A1 (ja) | 2010-12-02 |
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PCT/JP2010/058364 WO2010137492A1 (ja) | 2009-05-29 | 2010-05-18 | 車載用ノイズフィルタ |
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---|---|
US (1) | US20120081194A1 (ja) |
JP (1) | JPWO2010137492A1 (ja) |
CN (1) | CN102449904A (ja) |
GB (1) | GB2482646A (ja) |
WO (1) | WO2010137492A1 (ja) |
Cited By (10)
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JP2015015670A (ja) * | 2013-07-08 | 2015-01-22 | 株式会社オートネットワーク技術研究所 | ノイズフィルタ装置 |
JP2015079932A (ja) * | 2013-10-18 | 2015-04-23 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | 複合電子部品及びその実装基板 |
JP2015122241A (ja) * | 2013-12-25 | 2015-07-02 | 株式会社オートネットワーク技術研究所 | アース構造 |
JP2015149466A (ja) * | 2014-02-04 | 2015-08-20 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | 複合電子部品及びその実装基板 |
JP2015167352A (ja) * | 2014-02-13 | 2015-09-24 | 三菱電機株式会社 | フィルタ装置 |
JP2015204527A (ja) * | 2014-04-14 | 2015-11-16 | 矢崎総業株式会社 | ノイズフィルタ、及びそれを備えたワイヤハーネス組立体 |
US9225055B2 (en) | 2011-03-24 | 2015-12-29 | Harada Industry Co., Ltd. | Antenna device |
KR20160110681A (ko) * | 2015-03-10 | 2016-09-22 | 현대자동차주식회사 | Emc 특성을 개선한 출력터미널 |
JP2016208487A (ja) * | 2015-04-27 | 2016-12-08 | 矢崎総業株式会社 | ノイズフィルタ及びワイヤハーネス |
DE102016218117A1 (de) | 2015-09-24 | 2017-03-30 | Yazaki Corporation | Rauschfilter und Kabelbaum |
Families Citing this family (6)
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JP6298974B2 (ja) * | 2013-08-09 | 2018-03-28 | 北川工業株式会社 | 出力ノイズ低減装置 |
US9780754B2 (en) * | 2014-04-14 | 2017-10-03 | Yazaki Corporation | Noise removal circuit of wire harness and wire harness assembly including the same |
JP6438677B2 (ja) * | 2014-05-13 | 2018-12-19 | 矢崎総業株式会社 | ノイズフィルタ装置及びハーネス |
CN107078443A (zh) * | 2014-11-06 | 2017-08-18 | 赫希曼汽车通讯有限公司 | 由铜线制成的接通销 |
JP6642122B2 (ja) * | 2016-03-04 | 2020-02-05 | 株式会社オートネットワーク技術研究所 | ノイズフィルタ |
US11554752B2 (en) * | 2019-09-03 | 2023-01-17 | Te Connectivity Solutions Gmbh | Wavetrap for a vehicle defroster system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55138913A (en) * | 1979-04-17 | 1980-10-30 | Tdk Corp | Passive composite element |
JPH0232223U (ja) * | 1988-08-22 | 1990-02-28 | ||
JPH04257111A (ja) * | 1991-02-09 | 1992-09-11 | Murata Mfg Co Ltd | 積層チップπ型フィルタ |
JPH1140920A (ja) * | 1997-07-22 | 1999-02-12 | Taiyo Yuden Co Ltd | 複合部品 |
JP2004153502A (ja) * | 2002-10-30 | 2004-05-27 | Murata Mfg Co Ltd | 積層型lc複合部品 |
WO2007020902A1 (ja) * | 2005-08-15 | 2007-02-22 | Harada Industry Co., Ltd. | ノイズフィルタ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002093964A (ja) * | 2000-09-13 | 2002-03-29 | Hitachi Kokusai Electric Inc | 電子機器の筐体構造 |
JP2007214443A (ja) * | 2006-02-10 | 2007-08-23 | Nec Corp | 筐体および電子機器 |
JP2008198785A (ja) * | 2007-02-13 | 2008-08-28 | Alps Electric Co Ltd | 高周波ユニット |
JP4605192B2 (ja) * | 2007-07-20 | 2011-01-05 | セイコーエプソン株式会社 | コイルユニット及び電子機器 |
-
2010
- 2010-05-18 GB GB1120820.4A patent/GB2482646A/en not_active Withdrawn
- 2010-05-18 JP JP2011515987A patent/JPWO2010137492A1/ja active Pending
- 2010-05-18 WO PCT/JP2010/058364 patent/WO2010137492A1/ja active Application Filing
- 2010-05-18 US US13/322,901 patent/US20120081194A1/en not_active Abandoned
- 2010-05-18 CN CN2010800234894A patent/CN102449904A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55138913A (en) * | 1979-04-17 | 1980-10-30 | Tdk Corp | Passive composite element |
JPH0232223U (ja) * | 1988-08-22 | 1990-02-28 | ||
JPH04257111A (ja) * | 1991-02-09 | 1992-09-11 | Murata Mfg Co Ltd | 積層チップπ型フィルタ |
JPH1140920A (ja) * | 1997-07-22 | 1999-02-12 | Taiyo Yuden Co Ltd | 複合部品 |
JP2004153502A (ja) * | 2002-10-30 | 2004-05-27 | Murata Mfg Co Ltd | 積層型lc複合部品 |
WO2007020902A1 (ja) * | 2005-08-15 | 2007-02-22 | Harada Industry Co., Ltd. | ノイズフィルタ |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US9287610B2 (en) | 2011-03-24 | 2016-03-15 | Harada Industry Co., Ltd. | Antenna device |
US9825351B2 (en) | 2011-03-24 | 2017-11-21 | Harada Industry Co., Ltd. | Antenna device |
US9680201B2 (en) | 2011-03-24 | 2017-06-13 | Harada Industry Co., Ltd. | Antenna device |
US9225055B2 (en) | 2011-03-24 | 2015-12-29 | Harada Industry Co., Ltd. | Antenna device |
JP2015015670A (ja) * | 2013-07-08 | 2015-01-22 | 株式会社オートネットワーク技術研究所 | ノイズフィルタ装置 |
JP2015079932A (ja) * | 2013-10-18 | 2015-04-23 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | 複合電子部品及びその実装基板 |
JP2015122241A (ja) * | 2013-12-25 | 2015-07-02 | 株式会社オートネットワーク技術研究所 | アース構造 |
JP2015149466A (ja) * | 2014-02-04 | 2015-08-20 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | 複合電子部品及びその実装基板 |
JP2015167352A (ja) * | 2014-02-13 | 2015-09-24 | 三菱電機株式会社 | フィルタ装置 |
JP2015204527A (ja) * | 2014-04-14 | 2015-11-16 | 矢崎総業株式会社 | ノイズフィルタ、及びそれを備えたワイヤハーネス組立体 |
KR20160110681A (ko) * | 2015-03-10 | 2016-09-22 | 현대자동차주식회사 | Emc 특성을 개선한 출력터미널 |
KR101664667B1 (ko) | 2015-03-10 | 2016-10-12 | 현대자동차주식회사 | Emc 특성을 개선한 출력터미널 |
JP2016208487A (ja) * | 2015-04-27 | 2016-12-08 | 矢崎総業株式会社 | ノイズフィルタ及びワイヤハーネス |
DE102016218117A1 (de) | 2015-09-24 | 2017-03-30 | Yazaki Corporation | Rauschfilter und Kabelbaum |
DE102016218117B4 (de) | 2015-09-24 | 2023-02-09 | Yazaki Corporation | Rauschfilter und Kabelbaum |
Also Published As
Publication number | Publication date |
---|---|
CN102449904A (zh) | 2012-05-09 |
GB201120820D0 (en) | 2012-01-11 |
JPWO2010137492A1 (ja) | 2012-11-15 |
GB2482646A (en) | 2012-02-08 |
US20120081194A1 (en) | 2012-04-05 |
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