JP2020077739A - Noise filter - Google Patents

Noise filter Download PDF

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JP2020077739A
JP2020077739A JP2018209792A JP2018209792A JP2020077739A JP 2020077739 A JP2020077739 A JP 2020077739A JP 2018209792 A JP2018209792 A JP 2018209792A JP 2018209792 A JP2018209792 A JP 2018209792A JP 2020077739 A JP2020077739 A JP 2020077739A
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case
split
circuit board
electronic circuit
noise filter
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JP7260137B2 (en
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寛 青山
Hiroshi Aoyama
寛 青山
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Kitagawa Industries Co Ltd
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Kitagawa Industries Co Ltd
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Abstract

To provide a noise filter capable of reducing the height of protrusion from an electronic circuit board when attached to the electronic circuit board.SOLUTION: A noise filter has a magnetic core and a case. The magnetic core is made of a magnetic material and has a through hole having a shape into which an electric wire can be inserted. The case is configured to accommodate the magnetic core, and the case is slid in a direction along the plate surface of the electronic circuit board from the end surface side of the electronic circuit board, and the case is introduced into a cutout portion provided in the electronic circuit board, and therefore, the case is configured to be attachable to the electronic circuit board in a state where a part of the case enters the cutout portion in the plate thickness direction of the electronic circuit board.SELECTED DRAWING: Figure 7

Description

本開示は、ノイズフィルタに関する。   The present disclosure relates to noise filters.

フラットケーブル用のノイズフィルタが知られている（例えば、特許文献１参照。）。特許文献１には、第２のケース部材（５）に外部取り付け部（５７）を設ける例が記載されている。このような外部取り付け部（５７）を利用すれば、ノイズフィルタを回路基板などに設けられた取付孔（５８）などに容易に装着し得る旨が開示されている。   A noise filter for a flat cable is known (for example, see Patent Document 1). Patent Document 1 describes an example in which an external mounting portion (57) is provided on the second case member (5). It is disclosed that the noise filter can be easily mounted in a mounting hole (58) provided in a circuit board or the like by using such an external mounting portion (57).

特開２００５−４５１７８号公報JP, 2005-45178, A

しかし、上記特許文献１に記載のノイズフィルタを、例えば、回路基板の上面に取り付けたい場合であっても、その回路基板の上方にノイズフィルタを配置できるだけの十分な寸法の空間が存在しなければ、ノイズフィルタを取り付けることは困難である。   However, even if the noise filter described in Patent Document 1 is to be mounted on the upper surface of a circuit board, for example, if there is not enough space for disposing the noise filter above the circuit board, , It is difficult to attach a noise filter.

本開示の一局面においては、電子回路基板に取り付けられた際に電子回路基板からの突出高さを低減可能なノイズフィルタを提供することが望ましい。   In one aspect of the present disclosure, it is desirable to provide a noise filter that can reduce the protrusion height from the electronic circuit board when attached to the electronic circuit board.

本開示の一態様は、ノイズフィルタであって、磁性コア及びケースを備える。磁性コアは、磁性材料によって構成され、電線を挿通可能な形状の貫通孔を有する。ケースは、磁性コアを収容可能に構成され、電子回路基板の端面側から電子回路基板の板面に沿う方向へケースをスライドさせて、電子回路基板に設けられた切欠き部へケースを導入することにより、電子回路基板の板厚方向についてケースの一部が切欠き部へ入り込んでいる状態で、ケースを電子回路基板に対して取り付け可能に構成されている。   One aspect of the present disclosure is a noise filter including a magnetic core and a case. The magnetic core is made of a magnetic material and has a through hole having a shape capable of inserting an electric wire. The case is configured to accommodate the magnetic core, and the case is slid from the end surface side of the electronic circuit board in the direction along the plate surface of the electronic circuit board, and the case is introduced into the cutout portion provided in the electronic circuit board. Thus, the case is configured to be attachable to the electronic circuit board in a state where a part of the case enters the cutout portion in the plate thickness direction of the electronic circuit board.

このように構成されたノイズフィルタによれば、上述のように構成されたケースを備えている。そのため、ノイズフィルタを電子回路基板の端面側から電子回路基板の板面に沿う方向へスライドさせて、電子回路基板に設けられた切欠き部へノイズフィルタを導入することができる。これにより、電子回路基板の板厚方向についてケースの一部が切欠き部へ入り込んでいる状態で、ノイズフィルタを電子回路基板に対して取り付けることができる。したがって、このようなノイズフィルタであれば、電子回路基板の片面の上に積み重ねられるように配置されるノイズフィルタに比べ、電子回路基板からの突出高さを低減することができる。   According to the noise filter configured as described above, the case configured as described above is provided. Therefore, the noise filter can be slid from the end surface side of the electronic circuit board in the direction along the plate surface of the electronic circuit board, and the noise filter can be introduced into the notch provided in the electronic circuit board. Thus, the noise filter can be attached to the electronic circuit board in a state where a part of the case is inserted into the cutout portion in the plate thickness direction of the electronic circuit board. Therefore, such a noise filter can reduce the protruding height from the electronic circuit board as compared with the noise filter arranged so as to be stacked on one surface of the electronic circuit board.

図１Ａはノイズフィルタを右上前方から見た斜視図である。図１Ｂはノイズフィルタを左下後方から見た斜視図である。FIG. 1A is a perspective view of the noise filter viewed from the upper right front. FIG. 1B is a perspective view of the noise filter as viewed from the lower left rear. 図２Ａは磁性コアを右上前方から見た斜視図である。図２Ａは第１分割コア及び第２分割コアを右上前方から見た斜視図である。FIG. 2A is a perspective view of the magnetic core as viewed from the upper right front. FIG. 2A is a perspective view of the first split core and the second split core viewed from the upper right front. 図３Ａはノイズフィルタの平面図である。図３Ｂはノイズフィルタの底面図である。FIG. 3A is a plan view of the noise filter. FIG. 3B is a bottom view of the noise filter. 図４Ａはノイズフィルタの左側面図である。図４Ｂはノイズフィルタの正面図である。図４Ｃはノイズフィルタの右側面図である。図４Ｄはノイズフィルタの背面図である。FIG. 4A is a left side view of the noise filter. FIG. 4B is a front view of the noise filter. FIG. 4C is a right side view of the noise filter. FIG. 4D is a rear view of the noise filter. 図５Ａは第１分割ケース及び第２分割ケースを開位置へ変位させた状態を示す斜視図である。図５Ｂは図４ＢにＶＢ−ＶＢ線で示した切断面における断面図である。FIG. 5A is a perspective view showing a state in which the first split case and the second split case are displaced to the open position. 5B is a cross-sectional view taken along the line VB-VB in FIG. 4B. 図６Ａは電子回路基板に取り付けられる前のノイズフィルタを示す斜視図である。図６Ｂは電子回路基板に取り付けられた後のノイズフィルタを示す斜視図である。FIG. 6A is a perspective view showing the noise filter before being attached to the electronic circuit board. FIG. 6B is a perspective view showing the noise filter after being attached to the electronic circuit board. 図７Ａはノイズフィルタ、電子回路基板及びフラットケーブルの前後方向に垂直な切断面における中央断面図である。図７Ｂはノイズフィルタ、電子回路基板及びフラットケーブルの左右方向に垂直な切断面における中央断面図である。FIG. 7A is a central cross-sectional view of a cross section of the noise filter, the electronic circuit board, and the flat cable that is perpendicular to the front-rear direction. FIG. 7B is a central cross-sectional view of a cross section of the noise filter, the electronic circuit board, and the flat cable that is perpendicular to the left-right direction.

次に、上述のノイズフィルタについて、例示的な実施形態を挙げて説明する。本実施形態においては、図中に併記した前後左右上下の各方向を利用して説明を行う。これらの各方向は、ノイズフィルタの平面図（図３Ａ参照。）に表れる箇所が向けられる方向を上、底面図（図３Ｂ参照。）に表れる箇所が向けられる方向を下、正面図（図４Ｂ参照。）に表れる箇所が向けられる方向を前、背面図（図４Ｄ参照。）に表れる箇所が向けられる方向を後、左側面図（図４Ａ参照。）に表れる箇所が向けられる方向を左、右側面図（図４Ｃ参照。）に表れる箇所が向けられる方向を右、と規定した相対的な方向である。   Next, the noise filter described above will be described with reference to exemplary embodiments. In the present embodiment, description will be made using the front, rear, left, right, up, and down directions that are also shown in the drawing. In each of these directions, the direction in which the part appearing in the plan view (see FIG. 3A) of the noise filter is directed upward, the direction in which the part appearing in the bottom view (see FIG. 3B) is directed downward, and the front view (FIG. 4B). The direction in which the portion appearing in FIG. 4) is directed to the front, the direction in which the portion appearing in the rear view (see FIG. 4D) is directed to the rear, and the direction in which the portion appearing in the left side view (see FIG. 4A) is directed to the left, It is a relative direction in which the direction in which the part appearing in the right side view (see FIG. 4C) is directed is the right.

ただし、これらの各方向は、ノイズフィルタを構成する各部の相対的な位置を簡潔に説明するために規定した方向にすぎない。したがって、例えばノイズフィルタの使用時等に、ノイズフィルタがどのような方向に向けられるかは不定である。   However, each of these directions is only a direction defined for simply explaining the relative positions of the respective parts constituting the noise filter. Therefore, for example, when the noise filter is used, it is uncertain in what direction the noise filter is directed.

［ノイズフィルタの構成］
図１Ａ及び図１Ｂに示すように、ノイズフィルタ１は、磁性コア３及びケース５を備える。磁性コア３は、磁性材料（本実施形態の場合はフェライト。）によって構成される。ケース５は、樹脂材料によって構成される。磁性コア３は、図２Ａに示すように、図中でいう前後方向に貫通する貫通孔１１を有する。この貫通孔１１は、フラットケーブル（本開示でいう電線の一例に相当。）を挿通可能な扁平な形状（すなわち、上下方向の寸法が左右方向の寸法に比べて極めて薄い形状。）とされている。本実施形態の場合、磁性コア３は、図２Ａ及び図２Ｂに示すように、第１分割コア１３Ａ及び第２分割コア１３Ｂを有する。第１分割コア１３Ａ及び第２分割コア１３Ｂは、完全に同一の形状に構成され、同一形状とされた特定の面同士を向かい合わせて接触させると、貫通孔１１を有する形状となるように構成されている。 [Configuration of noise filter]
As shown in FIGS. 1A and 1B, the noise filter 1 includes a magnetic core 3 and a case 5. The magnetic core 3 is made of a magnetic material (ferrite in the case of this embodiment). The case 5 is made of a resin material. As shown in FIG. 2A, the magnetic core 3 has a through hole 11 penetrating in the front-back direction in the figure. The through-hole 11 has a flat shape (that is, a shape in which the vertical dimension is extremely thinner than the horizontal dimension) in which a flat cable (corresponding to an example of an electric wire in the present disclosure) can be inserted. There is. In the case of the present embodiment, the magnetic core 3 has a first split core 13A and a second split core 13B, as shown in FIGS. 2A and 2B. The first split core 13A and the second split core 13B are configured to have completely the same shape, and when the specific surfaces having the same shape are brought into contact with each other to face each other, they are configured to have the shape having the through hole 11. Has been done.

ケース５は、磁性コア３を収容可能に構成されている。本実施形態の場合、ケース５は、図１Ａ、図１Ｂ、図３Ａ、図３Ｂ、図４Ａ、図４Ｂ、図４Ｃ及び図４Ｄに示すように、第１分割ケース１５Ａ及び第２分割ケース１５Ｂを有する。第１分割ケース１５Ａと第２分割ケース１５Ｂは、図１Ｂ及び図４Ａ等に示すように、ヒンジ部１７を介して開閉可能に連結されている。これにより、第１分割ケース１５Ａ及び第２分割ケース１５Ｂは、互いに相対的に揺動し、図１Ａに示すような閉位置及び図５Ａに示すような開位置へ変位可能となっている。なお、第１分割ケース１５Ａ、第２分割ケース１５Ｂ及びヒンジ部１７は、射出成形によって一体成形されている。   The case 5 is configured to accommodate the magnetic core 3. In the case of the present embodiment, the case 5 includes a first divided case 15A and a second divided case 15B as shown in FIGS. 1A, 1B, 3A, 3B, 4A, 4B, 4C and 4D. Have. The first split case 15A and the second split case 15B are openably and closably connected via a hinge portion 17 as shown in FIGS. 1B and 4A. As a result, the first split case 15A and the second split case 15B swing relative to each other and can be displaced to the closed position as shown in FIG. 1A and the open position as shown in FIG. 5A. The first split case 15A, the second split case 15B, and the hinge portion 17 are integrally formed by injection molding.

ケース５は、第１分割ケース１５Ａによって第１分割コア１３Ａを保持可能、かつ第２分割ケース１５Ｂによって第２分割コア１３Ｂを保持可能に構成されている。本実施形態の場合、第１分割コア１３Ａは、図２Ｂに示すように、４つの凹部２１を有する。第１分割コア１３Ａが第１分割ケース１５Ａに収容される際には、図５Ａに示すように、第１分割ケース１５Ａに設けられた４つの爪部２３が４つの凹部２１に引っ掛かる。また、第１分割ケース１５Ａは、図３Ｂに示すように、２つのばね部２５を有する。第１分割コア１３Ａが第１分割ケース１５Ａに収容される際、ばね部２５は、図５Ｂに示すように、第１分割コア１３Ａに接触し、第１分割コア１３Ａから作用する力でばね部２５が弾性変形し、ばね部２５は第１分割コア１３Ａを爪部２３に向かって付勢する。これにより、第１分割コア１３Ａは、爪部２３に向かって押し付けられる状態で、第１分割ケース１５Ａによって保持される。   The case 5 is configured such that the first split case 15A can hold the first split core 13A and the second split case 15B can hold the second split core 13B. In the case of the present embodiment, the first split core 13A has four recesses 21 as shown in FIG. 2B. When the first split core 13A is housed in the first split case 15A, the four claw portions 23 provided in the first split case 15A are caught in the four recesses 21, as shown in FIG. 5A. The first split case 15A has two spring portions 25, as shown in FIG. 3B. When the first split core 13A is housed in the first split case 15A, the spring portion 25 comes into contact with the first split core 13A as shown in FIG. 5B, and the spring portion is acted upon by the force acting from the first split core 13A. 25 is elastically deformed, and the spring portion 25 biases the first split core 13A toward the claw portion 23. As a result, the first split core 13A is held by the first split case 15A while being pressed toward the claw portion 23.

上述の通り、第２分割コア１３Ｂは第１分割コア１３Ａと完全に同一の形状に構成されていて、第２分割コア１３Ｂも４つの凹部２１を有する。これら４つの凹部２１には、第２分割ケース１５Ｂに設けられた４つの爪部２３が引っ掛かる。また、第２分割ケース１５Ｂは、図３Ａに示すように、２つのばね部２５を有する。第２分割コア１３Ｂが第２分割ケース１５Ｂに収容される際、ばね部２５は、図５Ｂに示すように、第２分割コア１３Ｂに接触し、第２分割コア１３Ｂから作用する力でばね部２５が弾性変形し、ばね部２５は第２分割コア１３Ｂを爪部２３に向かって付勢する。これにより、第２分割コア１３Ｂは、爪部２３に向かって押し付けられる状態で、第２分割ケース１５Ｂによって保持される。   As described above, the second split core 13B has the completely same shape as the first split core 13A, and the second split core 13B also has four recesses 21. The four claws 23 provided on the second split case 15B are hooked on these four recesses 21. The second split case 15B has two spring portions 25, as shown in FIG. 3A. When the second split core 13B is housed in the second split case 15B, the spring portion 25 comes into contact with the second split core 13B as shown in FIG. 5B, and the spring portion is acted upon by the force acting from the second split core 13B. 25 is elastically deformed, and the spring portion 25 biases the second split core 13B toward the claw portion 23. As a result, the second split core 13B is held by the second split case 15B while being pressed against the claw portion 23.

第１分割ケース１５Ａ及び第２分割ケース１５Ｂは、上述の閉位置（図１Ａ等参照。）へ変位した際に、互いに係合可能に構成されている。第１分割ケース１５Ａと第２分割ケース１５Ｂを係合させると、第１分割コア１３Ａと第２分割コア１３Ｂは、上述のような貫通孔１１を形成する位置に配置される。より詳しくは、第２分割ケース１５Ｂは、図４Ｃ及び図５Ａに示すように、係合突起３１を有する。第１分割ケース１５Ａは、弾性係合片３３を有する。第１分割ケース１５Ａ及び第２分割ケース１５Ｂが上述の閉位置（図１Ａ等参照。）へ変位すると、係合突起３１が弾性係合片３３を弾性変形させつつ弾性係合片３３に引っ掛かる位置へと移動し、第１分割ケース１５Ａ及び第２分割ケース１５Ｂが係合する。   The first split case 15A and the second split case 15B are configured to be engageable with each other when displaced to the above-described closed position (see FIG. 1A and the like). When the first split case 15A and the second split case 15B are engaged with each other, the first split core 13A and the second split core 13B are arranged at the positions where the through holes 11 as described above are formed. More specifically, the second split case 15B has an engagement protrusion 31 as shown in FIGS. 4C and 5A. The first divided case 15A has an elastic engagement piece 33. When the first split case 15A and the second split case 15B are displaced to the above-described closed position (see FIG. 1A, etc.), the engagement protrusion 31 elastically deforms the elastic engagement piece 33 while being caught by the elastic engagement piece 33. The first divided case 15A and the second divided case 15B are engaged with each other.

ケース５は、図１Ａ、図１Ｂ、図３Ａ、図３Ｂ、図４Ａ、図４Ｂ、図４Ｃ及び図４Ｄに示すように、第１挟持部３５Ａ、第２挟持部３５Ｂ及び抜止部３７を有する。本実施形態の場合、第１挟持部３５Ａ、第２挟持部３５Ｂ及び抜止部３７は、第１分割ケース１５Ａに設けられている。   As shown in FIGS. 1A, 1B, 3A, 3B, 4A, 4B, 4C, and 4D, the case 5 has a first holding portion 35A, a second holding portion 35B, and a retaining portion 37. In the case of this embodiment, the first sandwiching portion 35A, the second sandwiching portion 35B, and the retaining portion 37 are provided in the first split case 15A.

第１挟持部３５Ａは、図４Ｂに表れるように、前方から見ると略円形に見える空隙４１を有し、左端側にスリット４３を有する形状とされている。当該空隙４１及びスリット４３を有する形状とされた部分は、図３Ａ、図３Ｂ及び図４Ａに表れるように、ヒンジ部１７が設けられた範囲よりも前方となる範囲、及びヒンジ部１７が設けられた範囲よりも後方となる範囲、以上２つの範囲において前後方向に延在している。   As shown in FIG. 4B, the first holding portion 35A has a gap 41 that looks substantially circular when viewed from the front, and has a slit 43 on the left end side. As shown in FIG. 3A, FIG. 3B, and FIG. 4A, the portion formed into the shape having the void 41 and the slit 43 is provided with the hinge portion 17 and the area in front of the area where the hinge portion 17 is provided. The area extending rearward of the above range extends in the front-rear direction in the above two areas.

これら２つの範囲それぞれにおいて、スリット４３の後端側の一部は、図４Ａに表れるように、上下方向の寸法が後端で最大となり、後端から前端側に向かって徐々に狭まる形状とされている。また、空隙４１の後端側の一部は、図４Ｄに表れるように、左右方向の寸法が後端で最大となり、後端から前端側に向かって徐々に左側へ狭まる形状とされている。このように空隙４１及びスリット４３の形状を後端側で拡がる形状にすると、後述する電子回路基板６１の第１縁部７３Ａを空隙４１及びスリット４３へ導入しやすくすることができる。   In each of these two ranges, as shown in FIG. 4A, a part of the rear end side of the slit 43 has a maximum vertical dimension at the rear end and is gradually narrowed from the rear end toward the front end. ing. Further, as shown in FIG. 4D, a part of the rear end side of the gap 41 has a shape in which the left-right dimension becomes maximum at the rear end and gradually narrows to the left side from the rear end toward the front end. When the shape of the gap 41 and the slit 43 is widened on the rear end side in this manner, the first edge portion 73A of the electronic circuit board 61 described later can be easily introduced into the gap 41 and the slit 43.

第２挟持部３５Ｂは、図４Ｂに表れるように、前方から見ると略円形に見える空隙４５を有し、右端側にスリット４７を有する形状とされている。当該空隙４５及びスリット４７を有する形状とされた部分は、図３Ａ、図３Ｂ及び図４Ｂに表れるように、ケース５の前端から後端に至る範囲において前後方向に延在している。   As shown in FIG. 4B, the second holding portion 35B has a void 45 that looks like a substantially circular shape when viewed from the front, and has a shape having a slit 47 on the right end side. As shown in FIGS. 3A, 3B and 4B, the portion having the void 45 and the slit 47 extends in the front-rear direction in the range from the front end to the rear end of the case 5.

スリット４７の後端側の一部は、図４Ｂに表れるように、上下方向の寸法が後端側ほど拡大する形状とされている。また、空隙４５の後端側の一部は、図４Ｄに表れるように、左右方向の寸法が後端で最大となり、後端から前端側に向かって徐々に右側へ狭まる形状とされている。このように空隙４５及びスリット４７の形状を後端側で拡がる形状にすると、後述する電子回路基板６１の第２縁部７３Ｂを空隙４５及びスリット４７へ導入しやすくすることができる。   As shown in FIG. 4B, a part of the rear end side of the slit 47 has a shape in which the vertical dimension increases toward the rear end side. Further, as shown in FIG. 4D, a part of the rear end side of the void 45 has a shape in which the dimension in the left-right direction is maximum at the rear end and gradually narrows to the right side from the rear end toward the front end. When the void 45 and the slit 47 are shaped so as to widen on the rear end side in this way, it is possible to easily introduce the second edge portion 73B of the electronic circuit board 61, which will be described later, into the void 45 and the slit 47.

抜止部３７は、図３Ａ、図３Ｂ、図４Ａ及び図４Ｃに表れるように、後方に向かって延出する延出片５１と、延出片５１の延出方向先端付近の下面から下方へ向かって突出する突起５３とを有する形状とされている。突起５３は、図３Ｂに表れるような、下方からは円形に見える円柱体の一部が切り取られて、図４Ａ及び図４Ｃに表れるような、円柱体の後端上方から斜め下前方へと傾斜する傾斜面が設けられた形状とされている。   As shown in FIG. 3A, FIG. 3B, FIG. 4A, and FIG. 4C, the retaining portion 37 extends downward from the extension piece 51 that extends rearward, and the lower surface near the extension direction tip of the extension piece 51. And a protrusion 53 that protrudes. As shown in FIG. 3B, a part of the circular columnar body that is circular from below is cut off, and the protrusion 53 is inclined obliquely downward and forward from above the rear end of the cylindrical column as shown in FIGS. 4A and 4C. It has a shape provided with an inclined surface.

以上のように構成されたノイズフィルタ１は、図６Ａに示すように、電子回路基板６１の端面側から電子回路基板６１の板面に沿う方向（図６中に矢印で示す方向。）へケース５をスライドさせることにより、図６Ｂに示すように、電子回路基板６１に取り付けることができる。また、図６Ａに示すように、第１分割ケース１５Ａ及び第２分割ケース１５Ｂを開位置へと変位させた状態でフラットケーブル６３を配置してから、第１分割ケース１５Ａ及び第２分割ケース１５Ｂを閉位置へと変位させることにより、図６Ｂに示すように、フラットケーブル６３をノイズフィルタ１に通すことができる。ノイズフィルタ１を電子回路基板６１に取り付ける作業と、フラットケーブル６３をノイズフィルタ１に通す作業については、どちらを先に実施してもよい。   As shown in FIG. 6A, the case of the noise filter 1 configured as described above extends from the end face side of the electronic circuit board 61 to the direction along the plate surface of the electronic circuit board 61 (the direction indicated by the arrow in FIG. 6). By sliding 5, the electronic circuit board 61 can be mounted as shown in FIG. 6B. Further, as shown in FIG. 6A, the flat cable 63 is arranged with the first split case 15A and the second split case 15B displaced to the open position, and then the first split case 15A and the second split case 15B. By displacing to the closed position, the flat cable 63 can be passed through the noise filter 1 as shown in FIG. 6B. Either the operation of attaching the noise filter 1 to the electronic circuit board 61 or the operation of passing the flat cable 63 through the noise filter 1 may be performed first.

ノイズフィルタ１が電子回路基板６１に取り付けられる際、第１挟持部３５Ａは、図６Ａ及び図７Ａに示すように、切欠き部７１を挟んで対向する位置にある電子回路基板６１の第１縁部７３Ａ及び第２縁部７３Ｂのうち、第１縁部７３Ａを当該第１縁部７３Ａの板厚方向両側から挟み込む位置に配置されて第１縁部７３Ａに沿ってスライドする。第２挟持部３５Ｂは、第２縁部７３Ｂを当該第２縁部７３Ｂの板厚方向両側から挟み込む位置に配置されて第２縁部７３Ｂに沿ってスライドする。   When the noise filter 1 is attached to the electronic circuit board 61, the first holding portion 35A has a first edge of the electronic circuit board 61 located at a position facing each other with the cutout portion 71 interposed therebetween, as shown in FIGS. 6A and 7A. Of the portion 73A and the second edge portion 73B, the first edge portion 73A is arranged at a position sandwiching the first edge portion 73A from both sides of the first edge portion 73A in the plate thickness direction, and slides along the first edge portion 73A. The 2nd clamping part 35B is arrange | positioned in the position which clamps the 2nd edge 73B from the board thickness direction both sides of the said 2nd edge 73B, and it slides along the 2nd edge 73B.

ケース５を切欠き部７１の奥までスライドさせると、図７Ｂに示すように、抜止部３７は、電子回路基板６１に設けられた被係合部７５と係合する。これにより、抜止部３７と被係合部７５との係合を意図的に解除しない限り、第１挟持部３５Ａ及び第２挟持部３５Ｂを第１縁部７３Ａ及び第２縁部７３Ｂに沿って前方へとスライドさせることはできなくなり、ノイズフィルタ１が電子回路基板６１に固定される。   When the case 5 is slid to the inside of the cutout portion 71, the retaining portion 37 engages with the engaged portion 75 provided on the electronic circuit board 61, as shown in FIG. 7B. Thereby, unless the engagement between the retaining portion 37 and the engaged portion 75 is intentionally released, the first holding portion 35A and the second holding portion 35B are arranged along the first edge portion 73A and the second edge portion 73B. It cannot be slid forward, and the noise filter 1 is fixed to the electronic circuit board 61.

［効果］
上記ノイズフィルタ１によれば、ノイズフィルタ１を電子回路基板６１の端面側から電子回路基板６１の板面に沿う方向へスライドさせて、電子回路基板６１に設けられた切欠き部７１へノイズフィルタ１を導入することができる。これにより、電子回路基板６１の板厚方向についてケース５の一部が切欠き部７１へ入り込んでいる状態で、ノイズフィルタ１を電子回路基板６１に対して取り付けることができる。したがって、このようなノイズフィルタ１であれば、電子回路基板６１の片面の上に積み重ねられるように配置されるノイズフィルタ１に比べ、電子回路基板６１からの突出高さを低減することができる。 [effect]
According to the above noise filter 1, the noise filter 1 is slid from the end face side of the electronic circuit board 61 in the direction along the plate surface of the electronic circuit board 61 to the cutout portion 71 provided in the electronic circuit board 61. 1 can be introduced. Thereby, the noise filter 1 can be attached to the electronic circuit board 61 in a state where a part of the case 5 is inserted into the cutout portion 71 in the plate thickness direction of the electronic circuit board 61. Therefore, with such a noise filter 1, the protruding height from the electronic circuit board 61 can be reduced as compared with the noise filter 1 arranged so as to be stacked on one surface of the electronic circuit board 61.

［他の実施形態］
以上、本開示のノイズフィルタについて、例示的な実施形態を挙げて説明したが、上述の実施形態は本開示の一態様として例示されるものにすぎない。すなわち、本開示は、上述の例示的な実施形態に限定されるものではなく、本開示の技術的思想を逸脱しない範囲内において、様々な形態で実施することができる。 [Other Embodiments]
Although the noise filter of the present disclosure has been described above with reference to the exemplary embodiment, the above-described embodiment is merely one example of one aspect of the present disclosure. That is, the present disclosure is not limited to the above-described exemplary embodiments, and can be implemented in various forms without departing from the technical idea of the present disclosure.

例えば、上記実施形態では、第１分割ケース１５Ａ及び第２分割ケース１５Ｂは、ヒンジ部１７を介して開閉可能に連結されていたが、ヒンジ部１７を設けるか否かは任意である。例えば、第１分割ケース１５Ａ及び第２分割ケース１５Ｂは、互いに係合可能かつ係合を解除すると分離可能な構造になっていてもよい。   For example, in the above-described embodiment, the first divided case 15A and the second divided case 15B are openably and closably connected via the hinge portion 17, but whether or not the hinge portion 17 is provided is arbitrary. For example, the first split case 15A and the second split case 15B may have a structure capable of being engaged with each other and separable when the engagement is released.

また、上記実施形態では、第１分割コア１３Ａと第２分割コア１３Ｂが同一形状となっていたが、第１分割コア１３Ａと第２分割コア１３Ｂが異なる形状となっていてもよい。
また、上記実施形態では、電線の一例としてフラットケーブルを例示したが、本開示でいう電線はフラットケーブルに限定されない。ただし、機器の小型化や薄型化に対応するため、フラットケーブルを使用する事例は増大している。よって、複数の電線を有するケーブルを利用したい場合は、フラットケーブルを用いると好ましく、その場合、ノイズフィルタもフラットケーブルに対応した形状とすれば、ノイズフィルタを低背化することが可能である。 Further, in the above embodiment, the first split core 13A and the second split core 13B have the same shape, but the first split core 13A and the second split core 13B may have different shapes.
Further, in the above embodiment, the flat cable is illustrated as an example of the electric wire, but the electric wire according to the present disclosure is not limited to the flat cable. However, the number of cases of using flat cables is increasing in order to respond to downsizing and thinning of devices. Therefore, when it is desired to use a cable having a plurality of electric wires, it is preferable to use a flat cable, and in that case, if the noise filter is formed into a shape corresponding to the flat cable, it is possible to reduce the height of the noise filter.

また、上記実施形態では、第１分割コア１３Ａ及び第２分割コア１３Ｂが互いに接触するように構成されていたが、磁気飽和を抑制するために、上記実施形態における第１分割コア１３Ａ及び第２分割コア１３Ｂの互いの接触面間に、樹脂シートを挟み込んだり空隙を設けたりすることにより、磁気的ギャップを設けてもよい。すなわち、第１分割コア１３Ａ及び第２分割コア１３Ｂが貫通孔１１を有する形状となるように配置されれば、第１分割コア１３Ａ及び第２分割コア１３Ｂを磁気的に接続して閉磁路を構成できるので、第１分割コア１３Ａと第２分割コア１３Ｂが直に接触するか、介在物を挟み込むか、空隙を挟んで対向するかは、いずれの構成を採用してもよい。   Further, in the above-described embodiment, the first split core 13A and the second split core 13B are configured to be in contact with each other, but in order to suppress magnetic saturation, the first split core 13A and the second split core 13A in the above-described embodiment. A magnetic gap may be provided by sandwiching a resin sheet or providing a space between the contact surfaces of the split cores 13B. That is, if the first split core 13A and the second split core 13B are arranged so as to have the shape having the through hole 11, the first split core 13A and the second split core 13B are magnetically connected to form a closed magnetic path. Since the first split core 13A and the second split core 13B directly contact each other, sandwich an inclusion, or face each other with a gap therebetween, any configuration may be adopted.

以上の他、上記各実施形態における一つの構成要素によって実現していた機能を、複数の構成要素によって実現するように構成してもよい。また、複数の構成要素によって実現していた機能を一つの構成要素によって実現するように構成してもよい。また、上記各実施形態の構成の一部を省略してもよい。また、上記各実施形態の構成の少なくとも一部を、他の上記実施形態の構成に対して付加、置換等してもよい。   In addition to the above, the function realized by one component in each of the above embodiments may be realized by a plurality of components. Further, the function realized by a plurality of constituent elements may be realized by one constituent element. Moreover, you may omit a part of structure of each said embodiment. Further, at least a part of the configuration of each of the above-described embodiments may be added to or replaced with the configuration of the other above-described embodiments.

（４）補足
［補足］
なお、以上説明した例示的な実施形態から明らかなように、本開示のノイズフィルタは、更に以下に挙げるような構成を備えていてもよい。 (4) Supplement [Supplement]
In addition, as is clear from the exemplary embodiments described above, the noise filter of the present disclosure may further include the following configurations.

本開示の一態様では、磁性コアは、第１分割コア及び第２分割コアを有し、第１分割コアと第２分割コアを対向させると貫通孔が形成されるように構成されてもよい。ケースは、互いに係合可能に構成された第１分割ケース及び第２分割ケースを有し、第１分割ケースによって第１分割コアを保持可能、かつ第２分割ケースによって第２分割コアを保持可能に構成され、第１分割ケースと第２分割ケースを係合させると、第１分割コアと第２分割コアが貫通孔を形成する位置に配置されるように構成されていてもよい。   In one aspect of the present disclosure, the magnetic core may include a first split core and a second split core, and a through hole may be formed when the first split core and the second split core face each other. .. The case has a first split case and a second split case configured to be engageable with each other, the first split case can hold the first split core, and the second split case can hold the second split core. When the first split case and the second split case are engaged with each other, the first split core and the second split core may be arranged at positions where the through holes are formed.

本開示の一態様では、ケースは、第１挟持部、第２挟持部及び抜止部を有してもよい。第１挟持部は、ケースが切欠き部へ導入される際に、切欠き部を挟んで対向する位置にある電子回路基板の第１縁部及び第２縁部のうち、第１縁部を当該第１縁部の板厚方向両側から挟み込む位置に配置可能、かつ第１縁部に沿ってスライド可能に構成されてもよい。第２挟持部は、ケースが切欠き部へ導入される際、第２縁部を当該第２縁部の板厚方向両側から挟み込む位置に配置可能、かつ第２縁部に沿ってスライド可能に構成されてもよい。抜止部は、ケースが切欠き部へ導入される際に、電子回路基板に設けられた被係合部と係合可能に構成されて、当該被係合部と係合した際には、第１挟持部及び第２挟持部が第１縁部及び第２縁部に沿ってスライドするのを抑制するように構成されていてもよい。   In one aspect of the present disclosure, the case may have a first sandwiching portion, a second sandwiching portion, and a retaining portion. The first sandwiching portion is configured such that, when the case is introduced into the cutout portion, the first edge portion of the first edge portion and the second edge portion of the electronic circuit board located at a position facing each other across the cutout portion is disposed. The first edge may be arranged at a position sandwiched from both sides in the plate thickness direction, and may be slidable along the first edge. When the case is introduced into the cutout portion, the second sandwiching portion can be arranged at a position where the second edge portion is sandwiched from both sides of the second edge portion in the plate thickness direction, and can be slid along the second edge portion. It may be configured. The retaining portion is configured to be engageable with an engaged portion provided on the electronic circuit board when the case is introduced into the cutout portion, and when engaged with the engaged portion, The first holding portion and the second holding portion may be configured to suppress sliding along the first edge portion and the second edge portion.

本開示の一態様では、第１挟持部、第２挟持部及び抜止部は、第１分割ケースに設けられていて、ケースが切欠き部へ導入される際には、第１分割ケースが電子回路基板に対して取り付けられるように構成され、第１分割ケースが電子回路基板に対して取り付けられた状態のまま、第１分割ケースと第２分割ケースとの係合を解除可能に構成されていてもよい。   In one aspect of the present disclosure, the first holding portion, the second holding portion, and the retaining portion are provided in the first split case, and when the case is introduced into the cutout portion, the first split case is electronic. The first division case is configured to be attached to the circuit board, and the engagement between the first division case and the second division case can be released while the first division case is attached to the electronic circuit board. May be.

本開示の一態様では、ケースは、第１分割ケース及び第２分割ケースと一体成形されて、第１分割ケースと第２分割ケースを開閉可能に連結するヒンジ部を有してもよい。   In one aspect of the present disclosure, the case may have a hinge part that is integrally molded with the first split case and the second split case and that connects the first split case and the second split case in an openable and closable manner.

１…ノイズフィルタ、３…磁性コア、５…ケース、１１…貫通孔、１３Ａ…第１分割コア、１３Ｂ…第２分割コア、１５Ａ…第１分割ケース、１５Ｂ…第２分割ケース、１７…ヒンジ部、２１…凹部、２３…爪部、２５…ばね部、３１…係合突起、３３…弾性係合片、３５Ａ…第１挟持部、３５Ｂ…第２挟持部、３７…抜止部、４１，４５…空隙、４３，４７…スリット、５１…延出片、５３…突起、６１…電子回路基板、６３…フラットケーブル、７１…切欠き部、７３Ａ…第１縁部、７３Ｂ…第２縁部、７５…被係合部。   DESCRIPTION OF SYMBOLS 1 ... Noise filter, 3 ... Magnetic core, 5 ... Case, 11 ... Through hole, 13A ... 1st split core, 13B ... 2nd split core, 15A ... 1st split case, 15B ... 2nd split case, 17 ... Hinge Part, 21 ... Recessed part, 23 ... Claw part, 25 ... Spring part, 31 ... Engagement protrusion, 33 ... Elastic engagement piece, 35A ... 1st clamping part, 35B ... 2nd clamping part, 37 ... Retaining part, 41, 45 ... Void, 43, 47 ... Slit, 51 ... Extension piece, 53 ... Projection, 61 ... Electronic circuit board, 63 ... Flat cable, 71 ... Notch, 73A ... First edge, 73B ... Second edge , 75 ... Engaged part.

Claims (5)

磁性コア及びケースを備え、
前記磁性コアは、磁性材料によって構成され、電線を挿通可能な形状の貫通孔を有し、
前記ケースは、前記磁性コアを収容可能に構成され、電子回路基板の端面側から前記電子回路基板の板面に沿う方向へ前記ケースをスライドさせて、前記電子回路基板に設けられた切欠き部へ前記ケースを導入することにより、前記電子回路基板の板厚方向について前記ケースの一部が前記切欠き部へ入り込んでいる状態で、前記ケースを前記電子回路基板に対して取り付け可能に構成されている
ノイズフィルタ。 With magnetic core and case,
The magnetic core is made of a magnetic material and has a through hole having a shape through which an electric wire can be inserted.
The case is configured to accommodate the magnetic core, and the case is slid in a direction along the plate surface of the electronic circuit board from the end surface side of the electronic circuit board to form a cutout portion provided in the electronic circuit board. By introducing the case into the electronic circuit board, the case is configured to be attachable to the electronic circuit board in a state where a part of the case enters the cutout portion in the plate thickness direction of the electronic circuit board. There is a noise filter. 請求項１に記載のノイズフィルタであって、
前記磁性コアは、第１分割コア及び第２分割コアを有し、前記第１分割コアと前記第２分割コアを対向させると前記貫通孔が形成されるように構成され、
前記ケースは、互いに係合可能に構成された第１分割ケース及び第２分割ケースを有し、前記第１分割ケースによって前記第１分割コアを保持可能、かつ前記第２分割ケースによって前記第２分割コアを保持可能に構成され、前記第１分割ケースと前記第２分割ケースを係合させると、前記第１分割コアと前記第２分割コアが前記貫通孔を形成する位置に配置されるように構成されている
ノイズフィルタ。 The noise filter according to claim 1, wherein
The magnetic core includes a first split core and a second split core, and the through hole is formed when the first split core and the second split core are opposed to each other,
The case has a first split case and a second split case that are configured to be engageable with each other, the first split core can be held by the first split case, and the second split case can be held by the second split case. When the first split case and the second split case are engaged with each other, the first split core and the second split core are arranged at positions where the through-holes are formed. A noise filter that is configured in. 請求項２に記載のノイズフィルタであって、
前記ケースは、第１挟持部、第２挟持部及び抜止部を有し、
前記第１挟持部は、前記ケースが前記切欠き部へ導入される際に、前記切欠き部を挟んで対向する位置にある前記電子回路基板の第１縁部及び第２縁部のうち、前記第１縁部を当該第１縁部の板厚方向両側から挟み込む位置に配置可能、かつ前記第１縁部に沿ってスライド可能に構成され、
前記第２挟持部は、前記ケースが前記切欠き部へ導入される際、前記第２縁部を当該第２縁部の板厚方向両側から挟み込む位置に配置可能、かつ前記第２縁部に沿ってスライド可能に構成され、
前記抜止部は、前記ケースが前記切欠き部へ導入される際に、前記電子回路基板に設けられた被係合部と係合可能に構成されて、当該被係合部と係合した際には、前記第１挟持部及び前記第２挟持部が前記第１縁部及び前記第２縁部に沿ってスライドするのを抑制するように構成されている
ノイズフィルタ。 The noise filter according to claim 2, wherein
The case has a first sandwiching portion, a second sandwiching portion, and a retaining portion,
The first holding portion includes a first edge portion and a second edge portion of the electronic circuit board which are located at positions facing each other across the cutout portion when the case is introduced into the cutout portion. The first edge portion can be arranged at positions sandwiching the first edge portion from both sides in the plate thickness direction, and is configured to be slidable along the first edge portion,
When the case is introduced into the cutout portion, the second holding portion can be arranged at a position to hold the second edge portion from both sides of the second edge portion in the plate thickness direction, and at the second edge portion. It is configured to slide along
The retaining portion is configured to be engageable with an engaged portion provided on the electronic circuit board when the case is introduced into the cutout portion, and engages with the engaged portion. The noise filter is configured to prevent the first sandwiching portion and the second sandwiching portion from sliding along the first edge portion and the second edge portion. 請求項３に記載のノイズフィルタであって、
前記第１挟持部、前記第２挟持部及び前記抜止部は、前記第１分割ケースに設けられていて、前記ケースが前記切欠き部へ導入される際には、前記第１分割ケースが前記電子回路基板に対して取り付けられるように構成され、前記第１分割ケースが前記電子回路基板に対して取り付けられた状態のまま、前記第１分割ケースと前記第２分割ケースとの係合を解除可能に構成されている
ノイズフィルタ。 The noise filter according to claim 3, wherein
The first sandwiching portion, the second sandwiching portion, and the retaining portion are provided in the first split case, and when the case is introduced into the cutout portion, the first split case is It is configured to be attached to an electronic circuit board, and the engagement between the first divided case and the second divided case is released while the first divided case is attached to the electronic circuit board. A noise filter that is configured as possible. 請求項２から請求項４までのいずれか一項に記載のノイズフィルタであって、
前記ケースは、前記第１分割ケース及び前記第２分割ケースと一体成形されて、前記第１分割ケースと前記第２分割ケースを開閉可能に連結するヒンジ部を有する
ノイズフィルタ。 The noise filter according to any one of claims 2 to 4, wherein:
A noise filter, wherein the case is integrally molded with the first split case and the second split case, and has a hinge part that connects the first split case and the second split case in an openable and closable manner.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577112A (en) * 1980-06-16 1982-01-14 Tdk Electronics Co Ltd Composite circuit part and method of producing same
JPS57134812U (en) * 1981-02-14 1982-08-23
JPH07153507A (en) * 1993-11-25 1995-06-16 Yazaki Corp Connector surface mounting mechanism
JPH07273485A (en) * 1994-03-31 1995-10-20 Kitagawa Ind Co Ltd Noise current absorption bushing
JPH10270107A (en) * 1997-03-21 1998-10-09 Hosiden Corp Board mounting connector
JP2002043133A (en) * 2000-07-27 2002-02-08 Funai Electric Co Ltd Ferrite core mounting structure
JP2005123266A (en) * 2003-10-14 2005-05-12 Tdk Corp Noise absorber

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577112A (en) * 1980-06-16 1982-01-14 Tdk Electronics Co Ltd Composite circuit part and method of producing same
JPS57134812U (en) * 1981-02-14 1982-08-23
JPH07153507A (en) * 1993-11-25 1995-06-16 Yazaki Corp Connector surface mounting mechanism
JPH07273485A (en) * 1994-03-31 1995-10-20 Kitagawa Ind Co Ltd Noise current absorption bushing
JPH10270107A (en) * 1997-03-21 1998-10-09 Hosiden Corp Board mounting connector
JP2002043133A (en) * 2000-07-27 2002-02-08 Funai Electric Co Ltd Ferrite core mounting structure
JP2005123266A (en) * 2003-10-14 2005-05-12 Tdk Corp Noise absorber

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