JP2015095684A - Noise filter - Google Patents

Noise filter Download PDF

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JP2015095684A
JP2015095684A JP2013232389A JP2013232389A JP2015095684A JP 2015095684 A JP2015095684 A JP 2015095684A JP 2013232389 A JP2013232389 A JP 2013232389A JP 2013232389 A JP2013232389 A JP 2013232389A JP 2015095684 A JP2015095684 A JP 2015095684A
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shaped
box
plate
main
opening
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JP6156076B2 (en
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武史 相澤
Takeshi Aizawa
武史 相澤
正二郎 後藤
Shojiro Goto
正二郎 後藤
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株式会社オートネットワーク技術研究所
Auto Network Gijutsu Kenkyusho:Kk
住友電装株式会社
Sumitomo Wiring Syst Ltd
住友電気工業株式会社
Sumitomo Electric Ind Ltd
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Abstract

PROBLEM TO BE SOLVED: To reduce a material cost of a grounding member.SOLUTION: A noise filter includes: a box-shaped member 12 of synthetic resin having an opening portion 15; a grounding member 40 of metal having a plate-shaped body part 41 disposed so as to close the opening portion 15 and a connection part 44 in the form of projecting into the box-shaped member 12 from the plate-shaped body part 41; a capacitor 50 housed in the box-shaped member 12; a lead wire 52R provided in the capacitor 50 and connected to the connection part 44 by welding in the box-shaped member 12; and a notch part 47 formed in the plate-shaped body part 41 to expose the weld zone of the connection part 44 and the lead wire 52R out from the box-shaped member.

Description

本発明は、ノイズフィルタに関するものである。   The present invention relates to a noise filter.

特許文献1には、合成樹脂製のハウジングと、金属板材からなるアース部材と、ハウジング内に収容されるコンデンサとを備えたノイズフィルタが開示されている。ハウジングは、上面が開放された箱形部材と、箱形部材の上面を塞ぐ蓋部材とを備えて構成されている。アース部材は、箱形部材の底壁部に沿うように取り付けられており、アース部材には、ハウジング内においてコンデンサのリード線と接続するための接続部が形成されている。   Patent Document 1 discloses a noise filter that includes a synthetic resin housing, a ground member made of a metal plate, and a capacitor accommodated in the housing. The housing includes a box-shaped member whose upper surface is opened and a lid member that closes the upper surface of the box-shaped member. The ground member is attached along the bottom wall portion of the box-shaped member, and a connection portion for connecting to the lead wire of the capacitor in the housing is formed in the ground member.

この接続部とリード線との接続手段としては、溶接による方法が接続信頼性の点で好ましいが、溶接による接続方法では、合成樹脂製のハウジングが熱変形することが懸念される。その点、特許文献1のノイズフィルタでは、接続部を上方へ立ち上げることにより、溶接位置を、箱形部材の上面の開口部に近い位置に設定しているので、溶接時にハウジングが熱変形する虞はない。   As a means for connecting the connecting portion and the lead wire, a welding method is preferable from the viewpoint of connection reliability, but there is a concern that the synthetic resin housing is thermally deformed by the welding connection method. In that respect, in the noise filter of Patent Document 1, since the welding position is set to a position close to the opening on the upper surface of the box-shaped member by raising the connection portion upward, the housing is thermally deformed during welding. There is no fear.

特許第4850181号公報Japanese Patent No. 4850181

上記特許文献1のノイズフィルタは、接続部を、箱形部材の底壁部に沿うように配されているアース部材から、箱形部材の上面の開口部の近傍位置まで上方へ立ち上げた形態とすることにより、溶接時におけるハウジングの熱変形を回避できるようになっている。しかし、接続部を上方へ大きく立ち上げる形状は、アース部材の材料コストが高くなるという問題がある。
本発明は上記のような事情に基づいて完成されたものであって、アース部材の材料コストを低減することを目的とする。 The present invention has been completed based on the above circumstances, and an object of the present invention is to reduce the material cost of the grounding member. The noise filter disclosed in Patent Document 1 has a configuration in which the connection portion is raised upward from a ground member arranged along the bottom wall portion of the box-shaped member to a position near the opening on the upper surface of the box-shaped member. By doing so, thermal deformation of the housing during welding can be avoided. However, the shape in which the connecting portion is largely raised upward has a problem that the material cost of the ground member is increased. The noise filter disclosed in Patent Document 1 has a configuration in which the connection portion is raised upward from a ground member arranged along the bottom wall portion of the box-shaped member to a position near the opening on the upper surface of the box-shaped By doing so, thermal deformation of the housing during welding can be avoided. However, the shape in which the connecting portion is largely raised upward has a problem that the material cost of the ground member is increased.
The present invention has been completed based on the above situation, and an object thereof is to reduce the material cost of the ground member. The present invention has been completed based on the above situation, and an object thereof is to reduce the material cost of the ground member.

本発明のノイズフィルタは、
開口部を有する合成樹脂製の箱形部材と、 A box-shaped member made of synthetic resin with an opening,
前記開口部を塞ぐように配された板状本体部と、前記板状本体部から前記箱形部材内に向けて突出した形態の接続部とを有する金属製のアース部材と、 A metal grounding member having a plate-shaped main body arranged so as to close the opening, and a connecting portion in a form protruding from the plate-shaped main body toward the inside of the box-shaped member.
前記箱形部材内に収容されたコンデンサと、 The capacitor housed in the box-shaped member and
前記コンデンサに設けられ、前記箱形部材内において前記接続部に溶接により接続されるリード線と、 A lead wire provided on the capacitor and connected to the connection portion by welding in the box-shaped member,
前記板状本体部に形成され、前記接続部と前記リード線との溶接領域を前記箱形部材の外部へ露出させる切欠部とを備えているところに特徴を有する。 It is characterized in that it is formed in the plate-shaped main body portion and is provided with a notch portion that exposes a welded region between the connecting portion and the lead wire to the outside of the box-shaped member. The noise filter of the present invention is The noise filter of the present invention is
A synthetic resin box-shaped member having an opening; A synthetic resin box-shaped member having an opening;
A metal ground member having a plate-like main body portion arranged so as to close the opening, and a connection portion protruding from the plate-like main body portion into the box-shaped member; A metal ground member having a plate-like main body portion arranged so as to close the opening, and a connection portion portion arranged from the plate-like main body portion into the box-shaped member;
A capacitor housed in the box-shaped member; A capacitor housed in the box-shaped member;
A lead wire provided in the capacitor and connected to the connecting portion by welding in the box-shaped member; A lead wire provided in the capacitor and connected to the connecting portion by welding in the box-shaped member;
It is characterized in that it is provided with a notch that is formed in the plate-like main body and exposes a welding region between the connecting portion and the lead wire to the outside of the box-shaped member. It is characterized in that it is provided with a notch that is formed in the plate-like main body and exposes a welding region between the connecting portion and the lead wire to the outside of the box-shaped member.

溶接による接続部とリード線との接続は、箱形部材の外部から切欠部を通して行うことができる。切欠部と接続部は同じ板状本体部に形成されているので、接続部の突出寸法を小さくして、アース部材の材料コストを低減することができる。   The connection between the connecting portion and the lead wire by welding can be made from the outside of the box-shaped member through the notch. Since the cutout portion and the connection portion are formed in the same plate-like main body portion, the projecting dimension of the connection portion can be reduced and the material cost of the ground member can be reduced.

実施例1のノイズフィルタの平面図The top view of the noise filter of Example 1 ハウジングからアース部材を外した状態をあらわす平面図A plan view showing the grounding member removed from the housing 図1のX−X線断面図XX sectional view of FIG. 図3のY−Y線断面図YY sectional view of FIG.

(1)本発明のノイズフィルタは、前記切欠部が前記接続部を切り起こすことによって形成されていてもよい。この構成によれば、切欠部を形成するために除去した部分が、接続部として活用されているので、材料コストを更に低減できる。   (1) The noise filter of this invention may be formed when the said notch raises the said connection part. According to this structure, since the part removed in order to form a notch part is utilized as a connection part, material cost can further be reduced.

(2)本発明のノイズフィルタは、前記接続部が、前記開口部の開口縁の近傍に配されているものであって、前記接続部における前記リード線との溶接領域が、前記開口部の開口縁とは反対側に面していてもよい。この構成によれば、溶接の際に、開口部の開口縁に対する熱の影響が軽減される。 (2) In the noise filter of the present invention, the connecting portion is disposed in the vicinity of the opening edge of the opening, and a welding region with the lead wire in the connecting portion is You may face the opposite side to an opening edge. According to this structure, the influence of the heat with respect to the opening edge of an opening part is reduced in the case of welding.

<実施例1>
以下、本発明を具体化した実施例1を図1〜図4を参照して説明する。 Hereinafter, Example 1 embodying the present invention will be described with reference to FIGS. 1 to 4. 本実施例1のノイズフィルタは、合成樹脂製のハウジング10と、端子金具30と、アース部材40と、一対のコンデンサ50と、1つのコイル60とを備えて構成されている。 The noise filter of the first embodiment includes a housing 10 made of synthetic resin, a terminal fitting 30, a ground member 40, a pair of capacitors 50, and one coil 60. 尚、以下の説明において、上下の方向については図3,4に表れる向きを基準とし、前後方向については図1〜3における右側を前側と定義する。 In the following description, the vertical direction is defined as the direction appearing in FIGS. 3 and 4, and the front-back direction is defined as the right side in FIGS. 1 to 3 as the front side. <Example 1> <Example 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The noise filter according to the first embodiment includes a housing 10 made of synthetic resin, a terminal fitting 30, a ground member 40, a pair of capacitors 50, and one coil 60. In the following description, the vertical direction is based on the direction shown in FIGS. 3 and 4, and the right and left directions in FIGS. Embodiment 1 of the present invention will be described below with reference to FIGS. The noise filter according to the first embodiment includes a housing 10 made of synthetic resin, a terminal fitting 30, a ground member 40, a pair of capacitors 50, and one coil 60. In the following description, the vertical direction is based on the direction shown in FIGS. 3 and 4, and the right and left directions in FIGS.

<ハウジング10>
ハウジング10は、箱形部材12とフード部22とを一体に形成して構成されている。箱形部材12は、平面視方形の底壁部13と、底壁部13の外周縁から立ち上がる角筒状の周壁部14とから構成され、上面が全領域に亘って開放された開口部15となっている。開口部15は、アース部材40によって閉塞されるようになっている。
<Housing 10>
The housing 10 is configured by integrally forming a box-shaped member 12 and a hood portion 22. The box-shaped member 12 includes a bottom wall portion 13 having a square shape in plan view and a square cylindrical peripheral wall portion 14 rising from the outer peripheral edge of the bottom wall portion 13, and an opening portion 15 whose upper surface is opened over the entire region. It has become. The opening 15 is closed by the ground member 40. The housing 10 is configured by forming a box-shaped member 12 and a hood portion 22. The box-shaped member 12 includes a bottom wall portion 13 having a square shape in plan view and a square cylindrical peripheral wall portion 14 rising from the The outer peripheral edge of the bottom wall portion 13, and an opening portion 15 whose upper surface is opened over the entire region. It has become. The opening 15 is closed by the ground member 40.

箱形部材12内には、底壁部13の上面から上方へ立ち上がった形態の前後一対の挟持部16が形成されている。一対の挟持部16は、コイル60を位置決め支持する機能を有する。同じく、箱形部材12内には、底壁部13の上面から立ち上がった形態の左右一対の収容部17が形成されている。収容部17の内部は、上方に開放された収容空間となっており、収容部17内には、コンデンサ50が収容されるようになっている。   In the box-shaped member 12, a pair of front and rear clamping parts 16 are formed that rise upward from the upper surface of the bottom wall part 13. The pair of sandwiching portions 16 has a function of positioning and supporting the coil 60. Similarly, in the box-shaped member 12, a pair of left and right accommodating portions 17 are formed that rise from the upper surface of the bottom wall portion 13. The interior of the accommodating portion 17 is an accommodating space opened upward, and the capacitor 50 is accommodated in the accommodating portion 17.

周壁部14を構成する前壁部18には、その上端面(即ち、開口部15の開口縁のうち前縁部)を凹ませた形態の位置決め溝19が形成されている。周壁部14を構成する左右両側壁部20の上端縁には、上方へ突出した形態の左右一対の係止爪21が、前後に間隔を空けて二対形成されている。フード部22は、前壁部18の外周縁から前方へ角筒状に延出した形態である。フード部22の上面は、箱形部材12の上面(開口部15の開口綿)に対して段差状に高くなっている。係止爪21の上端面は、フード部22の上面と同じ高さに設定されている。   The front wall portion 18 constituting the peripheral wall portion 14 is formed with a positioning groove 19 having a recessed upper end surface (that is, the front edge portion of the opening edge of the opening portion 15). Two pairs of left and right engaging claws 21 projecting upward are formed on the upper edge of the left and right side wall portions 20 constituting the peripheral wall portion 14 with a space in the front and rear direction. The hood portion 22 has a shape that extends forward from the outer peripheral edge of the front wall portion 18 in a rectangular tube shape. The upper surface of the hood part 22 is raised stepwise with respect to the upper surface of the box-shaped member 12 (open cotton of the opening 15). The upper end surface of the locking claw 21 is set to the same height as the upper surface of the hood portion 22.

<端子金具30>
端子金具30は、全体として前後方向に細長い形状である。 The terminal fitting 30 has an elongated shape in the front-rear direction as a whole. 一対の端子金具30は、左右に並列するように配されており、前壁部18を前後に貫通した状態でインサート成形によりハウジング10(箱形部材12)と一体化されている。 The pair of terminal fittings 30 are arranged so as to be parallel to each other on the left and right sides, and are integrated with the housing 10 (box-shaped member 12) by insert molding while penetrating the front wall portion 18 in the front-rear direction. 端子金具30の前端側領域を構成するタブ31は、フード部22内に収容され、図示しないワイヤーハーネスを構成する相手側端子(図示省略)に接続されるようになっている。 The tab 31 that constitutes the front end side region of the terminal fitting 30 is housed in the hood portion 22 and is connected to a mating terminal (not shown) that constitutes a wire harness (not shown). 端子金具30の後端部は、側面視が略L字形をなすように上向きに屈曲された溶接部32となっている。 The rear end portion of the terminal fitting 30 is a welded portion 32 bent upward so that the side view is substantially L-shaped. 溶接部32は、箱形部材12内における上端部、即ち開口部15に近い位置に配置されている。 The welded portion 32 is arranged at the upper end portion in the box-shaped member 12, that is, at a position close to the opening 15. 溶接部32の後面には、コンデンサ50のリード線52Fが半田62により接続されるようになっている。 The lead wire 52F of the capacitor 50 is connected to the rear surface of the welded portion 32 by the solder 62. <Terminal fitting 30> <Terminal fitting 30>
The terminal fitting 30 has an elongated shape in the front-rear direction as a whole. The pair of terminal fittings 30 are arranged in parallel to the left and right, and are integrated with the housing 10 (box-shaped member 12) by insert molding in a state of passing through the front wall portion 18 in the front-rear direction. The tab 31 constituting the front end side region of the terminal fitting 30 is accommodated in the hood portion 22 and is connected to a mating terminal (not shown) constituting a wire harness (not shown). The rear end portion of the terminal fitting 30 is a welded portion 32 that is bent upward so that the side view is substantially L-shaped. The welded portion 32 is disposed at the upper end in the box-shaped member 12, that is, at a position close to the opening 15. A lead wire 52F of the capacitor 50 is connected to the rear surface of the welded portion 32 by solder 62. The terminal fitting 30 has an elongated shape in the front-rear direction as a whole. The pair of terminal fittings 30 are arranged in parallel to the left and right, and are integrated with the housing 10 (box-shaped member 12) by insert molding in a state of passing through the front wall portion 18 in the front-rear direction. The tab 31 therefore the front end side region of the terminal fitting 30 is accommodated in the hood portion 22 and is connected to a mating terminal (not shown) ) Recently a wire harness (not shown). The rear end portion of the terminal fitting 30 is a welded portion 32 that is bent upward so that the side view is substantially L-shaped. The welded portion 32 is disposed at the upper end in the box-shaped member 12, that is, at a position close to the opening 15. A lead wire 52F of the capacitor 50 is connected to the rear surface of the welded portion 32 by solder 62.

<アース部材40>
アース部材40は、金属板材を所定形状に打ち抜いて曲げ加工等を施して成形されている。アース部材40は、板状本体部41と、屈曲部42と、接地部43と、接続部44とから構成されている。板状本体部41は、全体として平面視方形の水平な平板状をなしている。板状本体部41には、その前端縁から下向きに屈曲した位置決めリブ45が形成されている。屈曲部42は、板状本体部41の後端縁に連なっている。屈曲部42の後端縁には、板状本体部41と平行であって平面視略方形をなす接地部43の前端縁が連なっている。接地部43には、平面視円形をなす貫通形態の取付孔46が形成されている。
<Earth member 40>
The ground member 40 is formed by punching a metal plate material into a predetermined shape and bending it. The ground member 40 includes a plate-like main body portion 41, a bent portion 42, a ground portion 43, and a connection portion 44. The plate-like main body 41 has a horizontal flat plate shape that is square in plan view as a whole. The plate-like main body portion 41 is formed with positioning ribs 45 bent downward from the front end edge thereof. The bent portion 42 is continuous with the rear end edge of the plate-like main body portion 41. The rear end edge of the bent portion 42 is connected to the front end edge of the ground contact portion 43 that is parallel to the plate-like main body portion 41 and has a substantially square shape in plan view. The grounding portion 43 is formed with a through hole mounting hole 46 having a circular shape in plan view. The ground member 40 is formed by punching a metal plate material into a predetermined shape and bending it. The ground member 40 includes a plate-like main body portion 41, a bent portion 42, a ground portion 43, and a connection portion 44. The plate-like main body 41 has a horizontal flat plate shape that is square in plan view as a whole. The plate-like main body portion 41 is formed with positioning ribs 45 bent downward from the front end edge thereof. The bent portion 42 is continuous with the rear end edge of the plate-like main body portion 41. The rear end edge of the bent portion 42 is connected to the front end edge of the ground contact portion 43 that is parallel to the plate-like main body portion 41 and has a substantially square shape in plan view. The grounding portion 43 is formed with a through hole mounting hole 46 having a circular shape in plan view.

板状本体部41の後端側領域には、左右一対の接続部44が形成されている。接続部44は、板状本体部41の一部を下後方へ略直角に切り起こした形態である。接続部44の前面には、後述するコンデンサ50のリード線52Rが半田62により接続される。接続部44を切り起こし形成したことにより、板状本体部41のうち接続部44の前方に隣接する領域には、平面視方形をなす切欠部47が形成されている。切欠部47は、板状本体部41を上下に貫通した形態であり、全周に亘って閉じた窓状をなしている。この切欠部47は、平面視において、接続部44とリード線52Rとの溶接領域を箱形部材12の上方外部へ露出させるように位置する。また、板状本体部41の前端側領域には、端子金具30の溶接部32とリード線52Fとの溶接を行うための左右一対の窓孔48が形成されている。   A pair of left and right connection portions 44 are formed in the rear end side region of the plate-like main body portion 41. The connection part 44 is a form in which a part of the plate-like main body part 41 is cut and raised at a substantially right angle downward and rearward. A lead wire 52 </ b> R of a capacitor 50, which will be described later, is connected to the front surface of the connection portion 44 by solder 62. Since the connection portion 44 is cut and raised, a notch portion 47 having a square shape in plan view is formed in a region adjacent to the front of the connection portion 44 in the plate-like main body portion 41. The cutout portion 47 has a form penetrating the plate-like main body portion 41 in the vertical direction, and forms a closed window shape over the entire circumference. The cutout portion 47 is positioned so as to expose the welded region between the connection portion 44 and the lead wire 52 </ b> R to the upper outside of the box-shaped member 12 in plan view. A pair of left and right window holes 48 for welding the welded portion 32 of the terminal fitting 30 and the lead wire 52F are formed in the front end side region of the plate-like main body portion 41.

アース部材40をハウジング10に組み付けた状態では、板状本体部41が周壁部14の上端面に載置されるように当接することにより、箱形部材12に対するアース部材40の下方への相対変位が規制される。また、位置決めリブ45が位置決め溝19に嵌合することにより、箱形部材12に対するアース部材40の前後方向への相対変位が規制される。さらに、二対の係止爪21が板状本体部41の左右両側縁部に係止することにより、箱形部材12に対するアース部材40の上方への相対変位及び左右方向への相対変位が規制される。   In a state in which the ground member 40 is assembled to the housing 10, the plate-like main body portion 41 abuts so as to be placed on the upper end surface of the peripheral wall portion 14, whereby the ground member 40 is relatively displaced downward with respect to the box-shaped member 12. Is regulated. Further, when the positioning rib 45 is fitted in the positioning groove 19, the relative displacement in the front-rear direction of the ground member 40 with respect to the box-shaped member 12 is restricted. Further, the two pairs of locking claws 21 are locked to the left and right side edges of the plate-like main body 41, thereby restricting the relative displacement of the box-shaped member 12 in the upward direction and the relative displacement in the left-right direction. Is done.

アース部材40を箱形部材12に組み付けた状態では、接地部43の上面が、フード部22の上面、及び係止爪21の上端面と同じ高さに位置する。したがって、ノイズフィルタは、フード部22の上面、係止爪21の上端面及び接地部43の上面を、自動車のボディ等における平坦状の接地面(図示省略)に対して安定して当接させることができる。この状態では、接地面に対し、接地部43が、その全領域に亘る広い範囲で面当たりする。そして、取付孔46に貫通したボルト(図示省略)を接地面にねじ込むことにより、アース部材40が接地されるようになっている。   In a state where the ground member 40 is assembled to the box-shaped member 12, the upper surface of the grounding portion 43 is positioned at the same height as the upper surface of the hood portion 22 and the upper end surface of the locking claw 21. Therefore, the noise filter stably abuts the upper surface of the hood portion 22, the upper end surface of the locking claw 21, and the upper surface of the grounding portion 43 against a flat grounding surface (not shown) in the body of the automobile. be able to. In this state, the ground contact portion 43 comes into contact with the ground contact surface in a wide range over the entire area. The ground member 40 is grounded by screwing a bolt (not shown) penetrating the mounting hole 46 into the ground surface.

アース部材40を箱形部材12に組み付けた状態では、アース部材40に形成した左右一対の接続部44が、箱形部材12の内部に収容され、周壁部14を構成する後壁部の上端部前面に接近した位置に配置される。つまり、接続部44は、開口部15の開口縁のうち後壁部に近い位置に配置される。そのため、接続部44とリード線52Rとの溶接作業時の熱が、後壁部に悪影響を及ぼすことが懸念される。しかし、接続部44におけるリード線52Rとの溶接領域は、接続部44の前面、つまり接続部44を挟んで後壁部とは前後反対側であるから、後壁部に対して熱の影響が及ぶ虞はない。   In a state in which the ground member 40 is assembled to the box-shaped member 12, a pair of left and right connection portions 44 formed on the ground member 40 are accommodated inside the box-shaped member 12 and the upper end portion of the rear wall portion constituting the peripheral wall portion 14. It is arranged at a position close to the front. That is, the connecting portion 44 is disposed at a position near the rear wall portion of the opening edge of the opening portion 15. Therefore, there is a concern that the heat during the welding operation between the connecting portion 44 and the lead wire 52R may adversely affect the rear wall portion. However, since the welding region of the connecting portion 44 with the lead wire 52R is on the front surface of the connecting portion 44, that is, on the opposite side of the rear wall portion across the connecting portion 44, there is an influence of heat on the rear wall portion. There is no fear.

アース部材40を箱形部材12に組み付けた状態では、一対の窓孔48は、平面視において、一対の端子金具30の溶接部32とその後方近傍領域と対応するように配置されている。したがって、窓孔48は、平面視において、溶接部32とリード線52Fとの溶接領域を、箱形部材12の上方外部へ露出させている。溶接部32は、開口部15の開口縁のうち前壁部18に近い位置に配置されるため、溶接部32とリード線52Fとの溶接作業時の熱が、前壁部18に悪影響を及ぼすことが懸念される。しかし、溶接部32におけるリード線52Fとの溶接領域は、溶接部32の後面、つまり溶接部32を挟んで前壁部18とは前後反対側であるから、前壁部18に対して熱の影響が及ぶ虞はない。   In the state in which the ground member 40 is assembled to the box-shaped member 12, the pair of window holes 48 are arranged so as to correspond to the welded portion 32 of the pair of terminal fittings 30 and the rear vicinity region thereof in plan view. Therefore, the window hole 48 exposes the welded region between the welded portion 32 and the lead wire 52F to the upper outside of the box-shaped member 12 in plan view. Since the weld portion 32 is disposed at a position near the front wall portion 18 in the opening edge of the opening portion 15, the heat during the welding operation of the weld portion 32 and the lead wire 52 </ b> F adversely affects the front wall portion 18. There is concern. However, the welding region of the welded portion 32 with the lead wire 52F is on the rear surface of the welded portion 32, that is, on the opposite side of the front wall portion 18 across the welded portion 32. There is no risk of impact.

<コンデンサ50>
コンデンサ50は、コンデンサ本体51と、コンデンサ本体51から延出する前後一対のリード線52F,52Rとを備えて構成されている。コンデンサ本体51は、側面視が横長の略方形をなし、幅寸法は、前後寸法及び上下寸法に比べて小さい。コンデンサ50は、そのコンデンサ本体51を収容部17内に収容させた状態で、箱形部材12内に配されている。コンデンサ本体51は、接続部44とリード線52Rとの位置ずれ及び溶接部32とリード線52Fとの位置ずれを吸収するために、収容部17内で前後方向及び左右方向へ遊動できるようになっている。
<Capacitor 50>
The capacitor 50 includes a capacitor main body 51 and a pair of front and rear lead wires 52F and 52R extending from the capacitor main body 51. The capacitor main body 51 has a substantially rectangular shape in a side view, and the width dimension is smaller than the front-rear dimension and the vertical dimension. The capacitor 50 is disposed in the box-shaped member 12 in a state where the capacitor main body 51 is accommodated in the accommodating portion 17. The capacitor main body 51 can move in the front-rear direction and the left-right direction in the housing portion 17 in order to absorb the positional deviation between the connecting portion 44 and the lead wire 52R and the positional deviation between the welded portion 32 and the lead wire 52F. ing. The capacitor 50 includes a capacitor main body 51 and a pair of front and rear lead wires 52F and 52R extending from the capacitor main body 51. The capacitor main body 51 has a substantially rectangular shape in a side view, and the width dimension is smaller Thank the front-rear dimension and the vertical dimension. The capacitor 50 is disposed in the box-shaped member 12 in a state where the capacitor main body 51 is accommodated in the accommodating portion 17. The capacitor main body 51 can move in the front -rear direction and the left-right direction in the housing portion 17 in order to absorb the positional deviation between the connecting portion 44 and the lead wire 52R and the positional deviation between the welded portion 32 and the lead wire 52F. Ing.

一対のリード線52F,52Rは、いずれも、コンデンサ本体51の上面における前端部と後端部から上向きに導出されている。上向きに導出された前側のリード線52Fは、前方へ転向するように屈曲され、その先端部が、半田62(溶接)により端子金具30の溶接部32の後面に導通可能に接続されている。また、上向きに導出された後側のリード線52Rは、後方へ転向し、その先端部が、半田62(溶接)によりアース部材40の接続部44の前面に導通可能に接続されている。   Each of the pair of lead wires 52F and 52R is led upward from the front end portion and the rear end portion on the upper surface of the capacitor main body 51. The front lead wire 52F led upward is bent so as to turn forward, and its tip is connected to the rear surface of the welded portion 32 of the terminal fitting 30 by solder 62 (welding). Further, the rear lead wire 52R led out upward is turned rearward, and the front end portion thereof is connected to the front surface of the connection portion 44 of the ground member 40 by solder 62 (welding).

<コイル60>
コイル60は、軸線を前後方向に向けた円柱形のコア61の外周に螺旋状に巻き付けられて構成されている。コイル60は、底壁部13の上面に載置され、コア61は、前後一対の挟持部16に間で挟み付けられることにより、箱形部材12に対して移動を規制された状態に支持されている。
<Coil 60>
The coil 60 is configured to be spirally wound around the outer periphery of a cylindrical core 61 whose axis is directed in the front-rear direction. The coil 60 is mounted on the upper surface of the bottom wall portion 13, and the core 61 is supported between the pair of front and rear clamping portions 16 so that the movement is restricted with respect to the box-shaped member 12. ing.

コイル60の両端部は、一対の端子金具30の溶接部32に、半田62(溶接)により導通可能に接続される。コイル60の溶接は、コンデンサ50の前側のリード線52Fを溶接する工程で同時に行われる。上記のようにアース部材40と端子金具30に接続されたコイル60と2つのコンデンサ50は、π型のフィルタ回路を構成し、端子金具30に接続されたワイヤーハーネスの回路のノイズを効果的に除去するフィルタとしての機能を発揮する。   Both ends of the coil 60 are connected to the welded portions 32 of the pair of terminal fittings 30 by solder 62 (welding). The welding of the coil 60 is performed simultaneously in the process of welding the lead wire 52F on the front side of the capacitor 50. As described above, the coil 60 and the two capacitors 50 connected to the ground member 40 and the terminal fitting 30 constitute a π-type filter circuit, and effectively reduce the noise of the circuit of the wire harness connected to the terminal fitting 30. It functions as a filter to be removed.

<実施例1の作用及び効果>
ノイズフィルタの製造工程を説明する。まず、インサート成形により、ハウジング10を成形すると同時に、ハウジング10と一対の端子金具30を一体化させる。次に、箱形部材12の開口部15を上に向けた状態で、コイル60を箱形部材12内に収容して挟持部16により位置決めして保持するとともに、コンデンサ50を箱形部材12内に収容して収容部17内にセットする。
<Operation and Effect of Example 1>
The manufacturing process of the noise filter will be described. First, the housing 10 and the pair of terminal fittings 30 are integrated at the same time as the housing 10 is formed by insert molding. Next, with the opening 15 of the box-shaped member 12 facing upward, the coil 60 is accommodated in the box-shaped member 12 and positioned and held by the clamping unit 16, and the capacitor 50 is held in the box-shaped member 12. And set in the accommodating portion 17. The manufacturing process of the noise filter will be described. First, the housing 10 and the pair of terminal fittings 30 are integrated at the same time as the housing 10 is formed by insert molding. Next, with the opening 15 of the box-shaped. member 12 facing upward, the coil 60 is accommodated in the box-shaped member 12 and positioned and held by the clamping unit 16, and the capacitor 50 is held in the box-shaped member 12. And set in the accommodating portion 17.

コイル60とコンデンサ50を箱形部材12内に収容したら、アース部材40を箱形部材12(ハウジング10)に組み付けて、開口部15を板状本体部41で塞ぐ。この後、箱形部材12内において、コイル60と端子金具30との溶接、前側のリード線52Fと端子金具30との溶接、及び後側のリード線52Rとアース部材40との溶接を行う。   When the coil 60 and the capacitor 50 are accommodated in the box-shaped member 12, the ground member 40 is assembled to the box-shaped member 12 (housing 10), and the opening 15 is closed with the plate-shaped main body 41. Thereafter, in the box-shaped member 12, welding of the coil 60 and the terminal fitting 30, welding of the front lead wire 52F and the terminal fitting 30, and welding of the rear lead wire 52R and the ground member 40 are performed.

端子金具30の溶接部32は、箱形部材12内の上端部、即ち開口部15に近い位置に配置されており、この溶接部32の上方近傍には、板状本体部41に形成した窓孔48が開口している。この窓孔48により、溶接部32の溶接領域が箱形部材12の上方外部へ露出されている。箱形部材12内の溶接部32に対するコイル60及び前側のリード線52Fの溶接は、箱形部材12の上方から半田コテ(図示省略)を窓孔48内に差し入れて行う。   The welded portion 32 of the terminal fitting 30 is disposed at an upper end portion in the box-shaped member 12, that is, a position close to the opening portion 15. A window formed in the plate-like main body portion 41 is located above the welded portion 32. A hole 48 is opened. Through the window hole 48, the welded region of the welded portion 32 is exposed to the upper outside of the box-shaped member 12. Welding of the coil 60 and the front lead wire 52F to the welded portion 32 in the box-shaped member 12 is performed by inserting a soldering iron (not shown) into the window hole 48 from above the box-shaped member 12.

この時、高温の半田コテが合成樹脂製の周壁部14に接触することによって、周壁部14(開口部15の開口縁)が熱変形することが懸念される。しかし、窓孔48は、全周に亘って閉じた形態であるから、半田コテが前後左右に動いても、窓孔48の孔縁に当たるだけであり、周壁部14に接触する虞はない。   At this time, there is a concern that the peripheral wall portion 14 (opening edge of the opening portion 15) is thermally deformed by the high temperature soldering iron coming into contact with the peripheral wall portion 14 made of synthetic resin. However, since the window hole 48 is closed over the entire circumference, even if the soldering iron moves back and forth and right and left, it only hits the hole edge of the window hole 48 and there is no possibility of contacting the peripheral wall portion 14.

また、アース部材40の接続部44も、溶接部32と同様、箱形部材12内の上端部、即ち開口部15に近い位置に配置されている。そして、接続部44の上方近傍には、板状本体部41に形成した切欠部47が開口している。この切欠部47により、接続部44の溶接領域が箱形部材12の上方外部へ露出されている。したがって、箱形部材12内の接続部44に対する後側のリード線52Rの溶接も、溶接部32の溶接と同様、箱形部材12の上方から半田コテ(図示省略)を切欠部47内に差し入れて行う。   Further, the connection portion 44 of the ground member 40 is also arranged at the upper end portion in the box-shaped member 12, that is, at a position close to the opening portion 15, similarly to the weld portion 32. A notch 47 formed in the plate-like main body 41 is opened near the upper portion of the connecting portion 44. By this cutout portion 47, the welding region of the connection portion 44 is exposed to the upper outside of the box-shaped member 12. Therefore, in the welding of the rear lead wire 52R to the connecting portion 44 in the box-shaped member 12, a soldering iron (not shown) is inserted into the cutout portion 47 from above the box-shaped member 12 in the same manner as the welding of the welded portion 32. Do it.

この時、高温の半田コテが合成樹脂製の周壁部14に接触することによって、周壁部14(開口部15の開口縁)が熱変形することが懸念される。しかし、切欠部47は、全周に亘って閉じた形態であり、切欠部47の開口縁における後縁には接続部44が位置している。したがって、半田コテが前後左右に動いても、切欠部47の開口縁や接続部44に当たるだけであり、周壁部14に接触する虞はない。   At this time, there is a concern that the peripheral wall portion 14 (opening edge of the opening portion 15) is thermally deformed by the high temperature soldering iron coming into contact with the peripheral wall portion 14 made of synthetic resin. However, the notch 47 is closed over the entire circumference, and the connecting portion 44 is located at the rear edge of the opening edge of the notch 47. Therefore, even if the soldering iron moves back and forth and right and left, it only hits the opening edge of the notch 47 and the connecting portion 44, and there is no possibility of contacting the peripheral wall portion 14.

本実施例1のノイズフィルタは、開口部15を有する合成樹脂製の箱形部材12と、開口部15を塞ぐように配された板状本体部41と、板状本体部41から箱形部材12内に向けて突出した形態の接続部44とを有する金属製のアース部材40とを有する。箱形部材12内にはコンデンサ50が収容され、コンデンサ50に設けたリード線52Rが、箱形部材12内において接続部44に溶接により接続される。そして、板状本体部41には、接続部44とリード線52Rとの溶接領域を箱形部材12の外部へ露出させる切欠部47が形成されている。   The noise filter of the first embodiment includes a box-shaped member 12 made of synthetic resin having an opening 15, a plate-like main body 41 arranged so as to close the opening 15, and a box-shaped member from the plate-like main body 41. 12 and a metal grounding member 40 having a connecting portion 44 that protrudes toward the inside of the housing 12. A capacitor 50 is accommodated in the box-shaped member 12, and a lead wire 52 </ b> R provided on the capacitor 50 is connected to the connection portion 44 in the box-shaped member 12 by welding. The plate-like main body 41 is formed with a notch 47 that exposes a welding region between the connecting portion 44 and the lead wire 52 </ b> R to the outside of the box-shaped member 12.

この構成によれば、溶接による接続部44とリード線52Rとの接続を、箱形部材12の外部から切欠部47を通して行うことができる。この切欠部47と、溶接対象である接続部44は、同じ板状本体部41に形成されているので、板状本体部41からの接続部44の突出寸法を小さくして、アース部材40の材料コスト低減が実現されている。   According to this configuration, the connection portion 44 and the lead wire 52 </ b> R can be connected by welding through the cutout portion 47 from the outside of the box-shaped member 12. Since the cutout portion 47 and the connection portion 44 to be welded are formed on the same plate-like main body portion 41, the projecting dimension of the connection portion 44 from the plate-like main body portion 41 is reduced, and the ground member 40 Material cost reduction has been realized.

また、ノイズフィルタは、切欠部47が接続部44を切り起こすことによって形成されているので、板状本体部41のうち切欠部47を形成するために除去した部分が、接続部44として活用されている。したがって、材料コストを更に低減できるとともに、接続部44を切欠部47の近傍に配することができた。また、接続部44は、開口部15の開口縁の近傍に配されているのであるが、接続部44におけるリード線52Rとの溶接領域は、開口部15の開口縁とは反対側に面しているので、溶接の際に、開口部15の開口縁に対する熱の影響が軽減されている。   In addition, since the noise filter is formed by the cutout portion 47 cutting out the connection portion 44, the portion removed from the plate-like main body portion 41 to form the cutout portion 47 is used as the connection portion 44. ing. Therefore, the material cost can be further reduced, and the connection portion 44 can be disposed in the vicinity of the notch portion 47. Further, although the connection portion 44 is disposed in the vicinity of the opening edge of the opening portion 15, the welding region with the lead wire 52 </ b> R in the connection portion 44 faces the side opposite to the opening edge of the opening portion 15. Therefore, the influence of heat on the opening edge of the opening 15 is reduced during welding.

<他の実施例>
本発明は上記記述及び図面によって説明した実施例に限定されるものではなく、例えば次のような実施例も本発明の技術的範囲に含まれる。
(1)上記実施例1では、接続部を切り起こすことによって切欠部が形成されているが、切欠部を形成するために除去した部分とは別に、接続部が形成されていてもよい。
(2)上記実施例1では、切欠部を、全周に亘って閉じた窓状としたが、切欠部は、板状本体部の外周縁に開放された形態であってもよい。
(3)上記実施例1では、2つのコンデンサと1つのコイルによりπ形のフィルタ回路が構成されているが、本発明は、フィルタ回路が、1つのコンデンサと1つのコイルで構成されている場合や、1つのコンデンサで構成されている場合や、2つのコンデンサで構成されている場合にも適用できる。 (3) In the first embodiment, the π-shaped filter circuit is composed of two capacitors and one coil. However, in the present invention, the filter circuit is composed of one capacitor and one coil. It can also be applied when it is composed of one capacitor or when it is composed of two capacitors.
(4)上記実施例1では、ノイズ除去対象回路との接続手段を、箱形部材に形成したフード部によるコネクタ構造としたが、ノイズ除去対象回路との接続手段は、ノイズ除去対象回路を構成する電線に固着した端子金具を、箱形部材に組み付ける等の構造を用いてもよい。 (4) In the first embodiment, the connection means with the noise removal target circuit has a connector structure formed by a hood portion formed in a box-shaped member, but the connection means with the noise removal target circuit constitutes a noise removal target circuit. A structure such as assembling a terminal fitting fixed to an electric wire to a box-shaped member may be used.
(5)上記実施例1では、アース部材に形成した接地部を、前後方向においてフィルタ素子を挟んで端子金具とは反対の後方へ突出するように配したが、アース部材に接地部を形成せず、アース部材に設けたアース端子を端子金具と並ぶように配置し、このアース端子とアース部材を接続してもよい。 (5) In the first embodiment, the grounding portion formed on the grounding member is arranged so as to project backward opposite to the terminal fitting with the filter element sandwiched in the front-rear direction, but the grounding portion is formed on the grounding member. Instead, the ground terminal provided on the ground member may be arranged so as to be aligned with the terminal fitting, and the ground terminal may be connected to the ground member. <Other embodiments> <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention. The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Example 1 described above, the cutout portion is formed by raising the connection portion. However, the connection portion may be formed separately from the portion removed to form the cutout portion. (1) In Example 1 described above, the cutout portion is formed by raising the connection portion. However, the connection portion may be formed separately from the portion removed to form the cutout portion.
(2) In the first embodiment, the cutout portion has a window shape that is closed over the entire circumference. However, the cutout portion may be open to the outer peripheral edge of the plate-like main body portion. (2) In the first embodiment, the cutout portion has a window shape that is closed over the entire circumference. However, the cutout portion may be open to the outer peripheral edge of the plate-like main body portion.
(3) In the first embodiment, a π-type filter circuit is configured by two capacitors and one coil. However, in the present invention, the filter circuit is configured by one capacitor and one coil. It can also be applied to the case of being composed of one capacitor or the case of being composed of two capacitors. (3) In the first embodiment, a π-type filter circuit is configured by two capacitors and one coil. However, in the present invention, the filter circuit is configured by one capacitor and one coil. It can also be applied to the case. of being composed of one capacitor or the case of being composed of two capacitors.
(4) In the first embodiment, the connection means to the noise removal target circuit is a connector structure by the hood formed on the box-shaped member, but the connection means to the noise removal target circuit constitutes the noise removal target circuit. A structure such as assembling a terminal fitting fixed to an electric wire to be attached to a box-shaped member may be used. (4) In the first embodiment, the connection means to the noise removal target circuit is a connector structure by the hood formed on the box-shaped member, but the connection means to the noise removal target circuit constitutes the noise removal target circuit. A structure such as assembling a terminal fitting fixed to an electric wire to be attached to a box-shaped member may be used.
(5) In the first embodiment, the grounding portion formed on the ground member is arranged so as to protrude rearward from the terminal fitting with the filter element sandwiched in the front-rear direction. However, the grounding portion should be formed on the grounding member. Alternatively, an earth terminal provided on the earth member may be arranged in line with the terminal fitting, and the earth terminal and the earth member may be connected. (5) In the first embodiment, the grounding portion formed on the ground member is arranged so as to protrude rearward from the terminal fitting with the filter element sandwiched in the front-rear direction. However, the grounding portion should be formed on the grounding member. Alternatively, an earth terminal provided on the earth member may be arranged in line with the terminal fitting, and the earth terminal and the earth member may be connected.

12…箱形部材 15…開口部 40…アース部材 41…板状本体部 44…接続部 47…切欠部 50…コンデンサ 52R…リード線DESCRIPTION OF SYMBOLS 12 ... Box-shaped member 15 ... Opening part 40 ... Grounding member 41 ... Plate-shaped main-body part 44 ... Connection part 47 ... Notch part 50 ... Capacitor 52R ... Lead wire

Claims (3)

  1. 開口部を有する合成樹脂製の箱形部材と、
    前記開口部を塞ぐように配された板状本体部と、前記板状本体部から前記箱形部材内に向けて突出した形態の接続部とを有する金属製のアース部材と、
    前記箱形部材内に収容されたコンデンサと、
    前記コンデンサに設けられ、前記箱形部材内において前記接続部に溶接により接続されるリード線と、
    前記板状本体部に形成され、前記接続部と前記リード線との溶接領域を前記箱形部材の外部へ露出させる切欠部とを備えていることを特徴とするノイズフィルタ。
    A synthetic resin box-shaped member having an opening;
    A metal ground member having a plate-like main body portion arranged so as to close the opening, and a connection portion protruding from the plate-like main body portion into the box-shaped member; A metal ground member having a plate-like main body portion arranged so as to close the opening, and a connection portion portion arranged from the plate-like main body portion into the box-shaped member;
    A capacitor housed in the box-shaped member; A capacitor housed in the box-shaped member;
    A lead wire provided in the capacitor and connected to the connecting portion by welding in the box-shaped member; A lead wire provided in the capacitor and connected to the connecting portion by welding in the box-shaped member;
    A noise filter, comprising: a notch portion formed in the plate-like main body portion and exposing a welding region between the connection portion and the lead wire to the outside of the box-shaped member. A noise filter, comprising: a notch portion formed in the plate-like main body portion and exposing a welding region between the connection portion and the lead wire to the outside of the box-shaped member.
  2. 前記切欠部が前記接続部を切り起こすことによって形成されていることを特徴とする請求項1記載のノイズフィルタ。 The noise filter according to claim 1, wherein the cutout portion is formed by cutting up the connection portion.
  3. 前記接続部が、前記開口部の開口縁の近傍に配されているものであって、
    前記接続部における前記リード線との溶接領域が、前記開口部の開口縁とは反対側に面していることを特徴とする請求項1又は請求項2記載のノイズフィルタ。
    The connecting portion is disposed in the vicinity of the opening edge of the opening,
    3. The noise filter according to claim 1, wherein a welding region of the connection portion with the lead wire faces an opposite side of the opening edge of the opening.
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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653811U (en) * 1979-10-02 1981-05-12
JPS60186712U (en) * 1984-05-21 1985-12-11
US4620165A (en) * 1982-12-22 1986-10-28 Siemens Aktiengesellschaft Electrical suppressor filter
JPS63191574U (en) * 1987-05-28 1988-12-09
JPH03110891U (en) * 1990-02-27 1991-11-13
JPH06275979A (en) * 1993-03-19 1994-09-30 Nec Kansai Ltd Structure for grounding high frequency unit
JPH1126958A (en) * 1997-07-09 1999-01-29 Tdk Corp Bracket mounting structure for electric part
JPH11307955A (en) * 1998-04-20 1999-11-05 Tokin Corp Metallic case for electronic circuit part, and noise filter
JP2003308895A (en) * 2002-04-16 2003-10-31 Sony Corp Electric connection terminal device and receiver
JP2009076594A (en) * 2007-09-19 2009-04-09 Alps Electric Co Ltd Electronic circuit module
US20090139741A1 (en) * 2007-11-29 2009-06-04 Yazaki Corporation Electrical junction box incorporating an electronic component and electrical connection unit having thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653811U (en) * 1979-10-02 1981-05-12
US4620165A (en) * 1982-12-22 1986-10-28 Siemens Aktiengesellschaft Electrical suppressor filter
JPS60186712U (en) * 1984-05-21 1985-12-11
JPS63191574U (en) * 1987-05-28 1988-12-09
JPH03110891U (en) * 1990-02-27 1991-11-13
JPH06275979A (en) * 1993-03-19 1994-09-30 Nec Kansai Ltd Structure for grounding high frequency unit
JPH1126958A (en) * 1997-07-09 1999-01-29 Tdk Corp Bracket mounting structure for electric part
JPH11307955A (en) * 1998-04-20 1999-11-05 Tokin Corp Metallic case for electronic circuit part, and noise filter
JP2003308895A (en) * 2002-04-16 2003-10-31 Sony Corp Electric connection terminal device and receiver
JP2009076594A (en) * 2007-09-19 2009-04-09 Alps Electric Co Ltd Electronic circuit module
US20090139741A1 (en) * 2007-11-29 2009-06-04 Yazaki Corporation Electrical junction box incorporating an electronic component and electrical connection unit having thereof
JP2009134904A (en) * 2007-11-29 2009-06-18 Yazaki Corp Electronic component junction box, and unit incorporated with electronic component

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