JP6083344B2 - Noise absorber - Google Patents

Noise absorber Download PDF

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JP6083344B2
JP6083344B2 JP2013155972A JP2013155972A JP6083344B2 JP 6083344 B2 JP6083344 B2 JP 6083344B2 JP 2013155972 A JP2013155972 A JP 2013155972A JP 2013155972 A JP2013155972 A JP 2013155972A JP 6083344 B2 JP6083344 B2 JP 6083344B2
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corrugated tube
pair
holder
ferrite core
main body
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JP2015027205A (en
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武史 相澤
武史 相澤
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Description

本発明は、ノイズ吸収具に関するものである。   The present invention relates to a noise absorber.

電線束に重畳するノイズを一括して除去する方法として、電線束を可撓性を有する蛇腹状のコルゲートチューブに収容した後に、その周囲を磁性体（フェライトコア）で覆う方法が広く知られている。下記特許文献１では、２分割したリング状のフェライトコアをそれぞれ樹脂ケースに収容し、ヒンジ部を介して開閉可能に連結することで、電線束を収容したコルゲートチューブにフェライトコアを簡単に装着させる技術が開示されている。   As a method for collectively removing noise superimposed on a wire bundle, a method of covering the periphery with a magnetic material (ferrite core) after accommodating the wire bundle in a flexible bellows-like corrugated tube is widely known. Yes. In Patent Document 1 below, ring-shaped ferrite cores divided into two parts are housed in resin cases and connected via a hinge portion so that the ferrite core can be easily attached to a corrugated tube containing a wire bundle. Technology is disclosed.

特開２００２−１６４２１９号公報JP 2002-164219 A

しかしながら、フェライトコアは重いため、振動が伴う環境下では、その装着位置がずれ易いという問題点があった。その対策として、フェライトコアを収容する樹脂ケースをコルゲートチューブに入念にテープ巻きする方法が採られているが、作業が煩雑であるという問題点があった。   However, since the ferrite core is heavy, there is a problem that the mounting position is easily shifted under an environment with vibration. As a countermeasure, a method in which a resin case containing a ferrite core is carefully taped around a corrugated tube is employed, but there is a problem that the operation is complicated.

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、コルゲートチューブへの固定性を高めたノイズ吸収具を提供することを目的とする。   This invention is completed based on the above situations, Comprising: It aims at providing the noise absorber which improved the fixability to a corrugated tube.

本発明のノイズ吸収具は、
山部と谷部とが交互に繰り返された蛇腹状に形成されて可撓性を有するとともに、内部にワイヤハーネスを挿通可能なコルゲートチューブに装着されるノイズ吸収具であって、
前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることでリング状に合体されるフェライトコア対と、
各フェライトコア対をそれぞれ収容可能であり、前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることで前記コルゲートチューブの外周面を包囲可能なリング状に合体可能なホルダ対と、
前記ホルダ対に設けられ、前記コルゲートチューブの谷部に係止可能な係止部とを備え、
前記ホルダ対が、前記フェライトコア対をそれぞれ収容可能な本体部と、この本体部から前記コルゲートチューブの長手方向に沿って張り出し形成された延出片と、を有し、
前記ホルダ対に設けられた延出片が、前記ホルダ対の合体時に前記コルゲートチューブの全周を覆った状態になることを特徴とする。 The noise absorber of the present invention is
A noise absorber that is formed in a bellows shape in which peaks and valleys are alternately repeated and has flexibility, and is attached to a corrugated tube through which a wire harness can be inserted.
A ferrite core pair that is divided along the insertion direction of the wire harness and merged into a ring shape by abutting the divided surfaces,
A holder that can accommodate each ferrite core pair, is divided along the insertion direction of the wire harness, and can be combined into a ring shape that can surround the outer peripheral surface of the corrugated tube by butting the divided surfaces together Vs.
Provided with the holder pair, provided with a locking portion that can be locked to the valley of the corrugated tube ,
The holder pair has a main body part that can accommodate the ferrite core pair, respectively, and an extending piece that extends from the main body part along the longitudinal direction of the corrugated tube,
The extending piece provided in the holder pair is in a state of covering the entire circumference of the corrugated tube when the holder pair is united .

本発明によれば、フェライトコア対を収容可能なホルダ対に設けられた係止部をコルゲートチューブの谷部に係止させることで、ノイズ吸収具を簡単に位置決め固定することが可能となる。   According to the present invention, it is possible to easily position and fix the noise absorber by locking the locking portion provided in the holder pair capable of accommodating the ferrite core pair to the valley portion of the corrugated tube.

実施例１に係るコルゲートチューブに装着したノイズ吸収具を示す側断面図Side sectional view which shows the noise absorber attached to the corrugated tube which concerns on Example 1. FIG. 同じくノイズ吸収具の構成部品を示す斜視図The perspective view which similarly shows the component of a noise absorber 同じくノイズ吸収具の正断面図Similarly, a cross-sectional view of the noise absorber 同じくコルゲートチューブに装着したノイズ吸収具を示す斜視図The perspective view which shows the noise absorber similarly attached to the corrugated tube

本発明における好ましい実施の形態を説明する。   A preferred embodiment of the present invention will be described.

（１）本発明のノイズ吸収具は、
前記ホルダ対は、前記フェライトコア対をそれぞれ収容可能な本体部と、この本体部から前記コルゲートチューブの長手方向に沿って張り出し形成された延出片とからなり、
前記係止部は前記延出片の内面側に形成されている構成とすることが好ましい。
この構成によれば、係止部が内面側に設けられた延出片がコルゲートチューブの長手方向に沿って張り出し形成されているので、コルゲートチューブの任意の谷部に対して係止部を係止させればよく、ノイズ吸収具の固定作業の自由度が向上する。 (1) The noise absorber of the present invention is
The holder pair is composed of a main body portion that can accommodate the ferrite core pair, and an extending piece that extends from the main body portion along the longitudinal direction of the corrugated tube,
It is preferable that the locking portion is formed on the inner surface side of the extending piece.
According to this configuration, since the extending piece provided with the locking portion on the inner surface side is formed so as to extend along the longitudinal direction of the corrugated tube, the locking portion is engaged with an arbitrary valley portion of the corrugated tube. What is necessary is just to stop, and the freedom degree of the fixing work of a noise absorber is improved.

（２）本発明のノイズ吸収具は、
前記延出片は前記本体部から前記コルゲートチューブの長手方向に沿いつつ相互に反対方向へ向けて延出されるとともに、
前記係止部は、各延出片において前記コルゲートチューブの前記谷部のピッチに合わせて複数個所に配されている構成とすることが好ましい。
この構成によれば、コルゲートチューブと係止部の係止箇所を多くとれるので、ノイズ吸収具の固定性が一層高められる。 (2) The noise absorber of the present invention is
The extending pieces extend from the main body portion in opposite directions while being along the longitudinal direction of the corrugated tube,
It is preferable that the engaging portions are arranged at a plurality of locations in accordance with the pitch of the valley portions of the corrugated tube in each extending piece.
According to this structure, since many latching places of a corrugated tube and a latching | locking part can be taken, the fixability of a noise absorber is further improved.

（３）本発明のノイズ吸収具は、
前記延出片は、その先端部が前記コルゲートチューブ側へ押し付けられるように付勢されており、前記係止部は少なくとも前記延出片の先端部に配されている構成とすることが好ましい。
この構成によれば、延出片の先端部には係止部が設けられており、更にコルゲートチューブ側に押し付けられるように付勢されているので、ノイズ吸収具はより位置ずれしにくくなる。 (3) The noise absorber of the present invention is:
It is preferable that the extending piece is biased so that a tip end thereof is pressed toward the corrugated tube, and the locking portion is arranged at least at the tip end of the extending piece.
According to this structure, since the latching | locking part is provided in the front-end | tip part of the extension piece, and it is urged | biased so that it may be pressed against the corrugated tube side, a noise absorber becomes more difficult to shift.

次に、本発明のノイズ吸収具を具体化した実施例１について、図面を参照しつつ説明する。   Next, Example 1 that embodies the noise absorber of the present invention will be described with reference to the drawings.

＜実施例１＞
本実施例のノイズ吸収具はフェライトコア対２０と、ホルダ３０とによって構成され、電線束（ワイヤハーネス）ＷＨを内部に収容したコルゲートチューブ１０に装着される。以下の説明において、前後方向については、図１の左側を前側、右側を後側とする。 <Example 1>
The noise absorber according to the present embodiment includes a ferrite core pair 20 and a holder 30 and is attached to a corrugated tube 10 that houses an electric wire bundle (wire harness) WH. In the following description, in the front-rear direction, the left side in FIG. 1 is the front side and the right side is the rear side.

コルゲートチューブ１０は合成樹脂製であり、長尺の筒状に形成されている。コルゲートチューブ１０の外周面は山部１２と谷部１１とが交互に繰り返された蛇腹形状に形成され、可撓性を有している。コルゲートチューブ１０内には、電線束ＷＨが挿通されている。   The corrugated tube 10 is made of synthetic resin and is formed in a long cylindrical shape. The outer peripheral surface of the corrugated tube 10 is formed in a bellows shape in which the peak portions 12 and the valley portions 11 are alternately repeated, and has flexibility. An electric wire bundle WH is inserted into the corrugated tube 10.

フェライトコア対２０は、円環状のフェライトを、直径を通る平面に沿って２分割することで形成されている。更に両フェライトコア対２０の分割面２２には鏡面加工を施されている。合体状態のフェライトコア対２０の中空部の径はコルゲートチューブ１０の径と略同等に設定されている。また、フェライトコア対２０の内周面には、図２に示すように、軸方向に沿って樹脂製の樹脂リブ２１が一定のピッチで形成されている。樹脂リブ２１の形成ピッチはコルゲートチューブ１０の谷部１１の形成ピッチと同等に設定されており、コルゲートチューブ１０の谷部１１に略隙間なく係合可能である。   The ferrite core pair 20 is formed by dividing an annular ferrite into two along a plane passing through the diameter. Further, the split surface 22 of both ferrite core pairs 20 is mirror-finished. The diameter of the hollow portion of the combined ferrite core pair 20 is set to be approximately equal to the diameter of the corrugated tube 10. Further, as shown in FIG. 2, resin ribs 21 made of resin are formed on the inner peripheral surface of the ferrite core pair 20 at a constant pitch along the axial direction. The formation pitch of the resin ribs 21 is set to be equal to the formation pitch of the trough portions 11 of the corrugated tube 10 and can be engaged with the trough portions 11 of the corrugated tube 10 without a substantial gap.

ホルダ３０は合成樹脂製であり、直径を通る平面に沿って２分割されてホルダ対（第１ホルダ対３１Ａ、第２ホルダ対３１Ｂ）３１Ａ、３１Ｂが形成されている。両ホルダ対３１Ａ、３１Ｂ同士はヒンジ部３２によって開閉可能に連結されている。各ホルダ対３１Ａ、３１Ｂはフェライトコア対２０が収容可能な本体部３５Ａ、３５Ｂと、延出片３３Ａ、３３Ｂとから構成されている。そして、本体部３５Ａ、３５Ｂの内部にはフェライトコア対２０をほぼ隙間なく収容可能な収容空間が形成されている。   The holder 30 is made of synthetic resin, and is divided into two along a plane passing through the diameter to form holder pairs (first holder pair 31A, second holder pair 31B) 31A, 31B. Both holder pairs 31 </ b> A and 31 </ b> B are connected to each other by a hinge portion 32 so as to be opened and closed. Each holder pair 31A, 31B is composed of main body portions 35A, 35B that can accommodate the ferrite core pair 20, and extending pieces 33A, 33B. And the accommodation space which can accommodate the ferrite core pair 20 almost without a gap is formed inside the main body portions 35A and 35B.

図３に示すように、第２ホルダ対３１Ｂにはヒンジ部３２と反対側の縁部には、一対のロック突部Ｒ１が設けられており、第１ホルダ対３１Ａには、同じくロック突部Ｒ１に係合可能な略枠状のロックアームＲ２が一対設けられている。そして、両ホルダ対３１Ａ、３１Ｂを整合させた際には、第１ホルダ対３１Ａに設けられたロックアームＲ２が第２ホルダ対３１Ｂに設けられたロック突部Ｒ１に係合し、合体状態が維持される。そして、この合体状態ではホルダ３０の略中心部にコルゲートチューブ１０を挿通可能な挿通孔３１Ｈが形成される（図３）。また、挿通孔３１Ｈの径はコルゲートチューブ１０の山部１２の外径と略同等に設定されている。   As shown in FIG. 3, the second holder pair 31B is provided with a pair of lock protrusions R1 on the edge opposite to the hinge part 32, and the first holder pair 31A has the same lock protrusions. A pair of substantially frame-like lock arms R2 that can be engaged with R1 are provided. When the holder pairs 31A and 31B are aligned, the lock arm R2 provided on the first holder pair 31A engages with the lock protrusion R1 provided on the second holder pair 31B, and the combined state is established. Maintained. And in this united state, the insertion hole 31H which can penetrate the corrugated tube 10 is formed in the approximate center part of the holder 30 (FIG. 3). Further, the diameter of the insertion hole 31 </ b> H is set substantially equal to the outer diameter of the peak portion 12 of the corrugated tube 10.

また、第１、第２ホルダ対３１Ａ、３１Ｂには、本体部３５Ａ、３５Ｂの前後面の挿通孔３１Ｈ縁部より、前後方向に向かってそれぞれ２枚の延出片（第１前方延出片３３ＡＦ、第１後方延出片３３ＡＢ、第２前方延出片３３ＢＦ、第２後方延出片３３ＢＢ）３３が延出形成されている（図２）。延出片３３はそれぞれ半円筒形状であり、その内周面には、その延出方向に沿ってリブ（係止部）３４が繰り返し形成されている。また、リブ３４は樹脂リブ２１と同様に、その形成ピッチはコルゲートチューブ１０の谷部１１のピッチと同等に設定されており、コルゲートチューブ１０の谷部１１に略隙間なく係合可能である。   The first and second holder pairs 31A and 31B have two extending pieces (first front extending pieces) in the front-rear direction from the edge portions of the insertion holes 31H on the front and rear surfaces of the main body portions 35A and 35B. 33AF, first rear extension piece 33AB, second front extension piece 33BF, second rear extension piece 33BB) 33 are extended (FIG. 2). Each of the extending pieces 33 has a semi-cylindrical shape, and ribs (locking portions) 34 are repeatedly formed on the inner peripheral surface along the extending direction. Further, the ribs 34 are formed at the same pitch as the pitches of the valleys 11 of the corrugated tube 10, and can be engaged with the valleys 11 of the corrugated tube 10 with substantially no gap, like the resin ribs 21.

そして、第２ホルダ対３１Ｂの本体部３５Ｂより延出する第２前方延出片３３ＢＦ、第２後方延出片３３ＢＢの先端部には、図４に示すように、ロック突部Ｒ１がそれぞれ形成されている。また、第１ホルダ対３１Ａの本体部３５Ａより延出する第１前方延出片３３ＡＦ、第１後方延出片３３ＡＢの先端部には、ロック突部Ｒ１と係合可能な略枠状のロックアームＲ２がそれぞれ形成されている。   Then, as shown in FIG. 4, lock protrusions R1 are formed at the front ends of the second front extension piece 33BF and the second rear extension piece 33BB extending from the main body portion 35B of the second holder pair 31B. Has been. In addition, a substantially frame-like lock that can be engaged with the locking protrusion R1 is provided at the front end of the first front extension piece 33AF and the first rear extension piece 33AB extending from the main body portion 35A of the first holder pair 31A. Each arm R2 is formed.

次に、ノイズ吸収具をコルゲートチューブ１０に装着する手順の一例を説明する。まず、各ホルダ対３１Ａ、３１Ｂの本体部３５Ａ、３５Ｂに、フェライトコア対２０を収容する。その後、図３に示すように、挿通孔３１Ｈにコルゲートチューブ１０が挿通されるようにしながら、ヒンジ部３２を中心にして両ホルダ対３１Ａ、３１Ｂを閉じていき、第１ホルダ対３１ＡのロックアームＲ２を第２ホルダ対３１Ｂのロック突部Ｒ１に係合させる。この時、フェライトコア対２０の分割面２２同士は隙間なく密着する。また、フェライトコア２０の内周面に設けられた樹脂リブ２１はコルゲートチューブ１０の谷部１１に係合し、フェライトコア対２０の位置ずれが規制される。   Next, an example of a procedure for attaching the noise absorber to the corrugated tube 10 will be described. First, the ferrite core pair 20 is accommodated in the main body portions 35A and 35B of the holder pairs 31A and 31B. Thereafter, as shown in FIG. 3, while the corrugated tube 10 is inserted through the insertion hole 31H, both the holder pair 31A and 31B are closed around the hinge portion 32, and the lock arm of the first holder pair 31A is closed. R2 is engaged with the lock projection R1 of the second holder pair 31B. At this time, the split surfaces 22 of the ferrite core pair 20 are in close contact with each other without a gap. Further, the resin rib 21 provided on the inner peripheral surface of the ferrite core 20 engages with the valley portion 11 of the corrugated tube 10, and the positional deviation of the ferrite core pair 20 is restricted.

次に、各ホルダ対３１Ａ、３１Ｂの本体部３５Ａ、３５Ｂの前後面より延出する延出片３３をコルゲートチューブ１０に密着させる。各延出片３３は半円筒状であるから、第１ホルダ対３１Ａより延出する第１延出片３３ＡＦ、３３ＡＢと、第２ホルダ対３１Ｂより延出する第２延出片３３ＢＦ、３３ＢＢが整合することでコルゲートチューブ１０の外周面は略覆われる。また、各延出片３３の内周面にはリブ３４が繰り返し形成されており、それらはコルゲートチューブ１０の谷部１１にそれぞれ係合してほぼ隙間なく密着する。これにより、ホルダ３０の前後方向への位置ずれは規制される。最後に、第１延出片３３ＡＦ、３３ＡＢの先端部に設けられたロックアームＲ２を第２延出片３３ＢＦ、３３ＢＢの先端部に設けられたロック突部Ｒ１に係合させることで互いをロックする。この時、両延出片３３はコルゲートチューブ１０に対して圧縮気味に付勢される。これでノイズ吸収具の装着作業は完了する。   Next, the extending piece 33 extending from the front and rear surfaces of the main body portions 35A and 35B of the holder pairs 31A and 31B is brought into close contact with the corrugated tube 10. Since each extending piece 33 is semi-cylindrical, first extending pieces 33AF and 33AB extending from the first holder pair 31A and second extending pieces 33BF and 33BB extending from the second holder pair 31B are provided. By aligning, the outer peripheral surface of the corrugated tube 10 is substantially covered. Further, ribs 34 are repeatedly formed on the inner peripheral surface of each extending piece 33, and they engage with the valley portions 11 of the corrugated tube 10 and are in close contact with each other with almost no gap. Thereby, the position shift of the holder 30 in the front-rear direction is restricted. Finally, the locking arms R2 provided at the distal ends of the first extending pieces 33AF, 33AB are engaged with the locking projections R1 provided at the distal ends of the second extending pieces 33BF, 33BB to lock each other. To do. At this time, both the extended pieces 33 are urged against the corrugated tube 10 in a compressed manner. This completes the installation work of the noise absorber.

次に本実施例の作用・効果を説明する。   Next, the operation and effect of the present embodiment will be described.

フェライトコア対２０を収容するホルダ対３１Ａ、３１Ｂにはコルゲートチューブ１０に沿う様に半円筒状の延出片３３が延出形成されている。よって、本実施例によれば、ホルダ対３１Ａ、３１Ｂをロックすることでホルダ３０がコルゲートチューブ１０より脱落するのを防止できる。また、延出片３３の内周面にはコルゲートチューブ１０の谷部１１に略隙間なく係合可能なリブ３４が形成されているので、ノイズ吸収具の軸方向への位置ずれが規制され、ノイズ吸収具の固定性を高めることができる。   A semi-cylindrical extending piece 33 is formed to extend along the corrugated tube 10 in the holder pair 31A, 31B that accommodates the ferrite core pair 20. Therefore, according to the present embodiment, the holder 30 can be prevented from falling off the corrugated tube 10 by locking the holder pair 31A, 31B. Further, since the rib 34 that can be engaged with the valley portion 11 of the corrugated tube 10 without substantial gap is formed on the inner peripheral surface of the extending piece 33, the positional deviation in the axial direction of the noise absorber is restricted, The fixability of the noise absorber can be improved.

また、リブ３４は延出片３３に、延出方向に沿って繰り返し形成されているので、コルゲートチューブ１０の谷部１１に対する係合箇所を多く採ることができ、ノイズ吸収具はより位置ずれしにくくなる。   Moreover, since the rib 34 is repeatedly formed in the extension piece 33 along the extension direction, many engagement parts with respect to the trough part 11 of the corrugated tube 10 can be taken, and the noise absorber is more misaligned. It becomes difficult.

また、延出片３３はホルダ対３１Ａ、３１Ｂの本体部３５Ａ、３５Ｂの両側面より計４本延出形成されているため、ホルダ対３１Ａ、３１Ｂの本体部３５Ａ、３５Ｂの一側面のみに延出片３３を設ける場合に比べて、高い固定性が発揮される。   In addition, since four extension pieces 33 are formed to extend from both side surfaces of the main body portions 35A and 35B of the holder pair 31A and 31B, they extend to only one side surface of the main body portions 35A and 35B of the holder pair 31A and 31B. Compared with the case where the protruding piece 33 is provided, high fixability is exhibited.

また、フェライトコア対２０の内周面にもコルゲートチューブ１０の谷部１１に略隙間なく係合可能な樹脂リブ２１が繰り返し形成されているので、フェライトコア対２０自体の位置ずれを防ぐことが可能となり、これに伴ってフェライトコアによるノイズ除去機能の安定化を図ることができる。   Further, since the resin ribs 21 that can be engaged with the valley portions 11 of the corrugated tube 10 without substantial gaps are repeatedly formed on the inner peripheral surfaces of the ferrite core pair 20, it is possible to prevent the positional deviation of the ferrite core pair 20 itself. Accordingly, the noise removal function by the ferrite core can be stabilized.

また、第２ホルダ対３１Ｂの本体部３５Ｂより延出する第２延出片３３ＢＦ、３３ＢＢの先端部３４Ｂと、第１ホルダ対３１Ａの本体部３５Ａより延出する第１延出片３３ＡＦ、３３ＡＢの先端部３４Ａには、それぞれロック突部Ｒ１と、ロック突部Ｒ１に係合可能なロックアームＲ２が形成されており、これらをロックすることにより、各延出片３３はコルゲートチューブ１０側に付勢されるので、ノイズ吸収具の固定性は一層高められる。   Further, the second extending pieces 33BF and 33BB extending from the main body portion 35B of the second holder pair 31B, and the first extending pieces 33AF and 33AB extending from the main body portion 35A of the first holder pair 31A. The front end portion 34A is formed with a lock projection R1 and a lock arm R2 that can be engaged with the lock projection R1, and by locking these, the extended pieces 33 are located on the corrugated tube 10 side. Since it is biased, the fixability of the noise absorber is further enhanced.

以上、本発明によれば、コルゲートチューブ１０への固定性が高いノイズ吸収具を得ることが可能となる。   As described above, according to the present invention, it is possible to obtain a noise absorber that is highly fixed to the corrugated tube 10.

＜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）上記実施例では、延出片を計４本延出形成されたが、延出片の本数に制限はない。
（２）上記実施例では、延出片の先端部のみをロック構造によりコルゲートチューブに付勢したが、延出片のいずれの箇所に設けても良い。
（３）上記実施例では、延出片の先端部をロック構造によりコルゲートチューブに付勢したが、これに限らず、テープ巻き等の手段で付勢しても良い。
（４）上記実施例では、両延出片の全長に亘って係止部を形成したが、これに限らず、延出片の一部領域にのみ係止部を形成しても良い。
（５）上記実施例では、延出片により、コルゲートチューブの全周を覆ったが、コルゲートの周面の一部に配されているだけでも良い。
（６）上記実施例では、フェライト対を合体された状態を円環状としたが、方環状等であっても構わない。 <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.
(1) In the above embodiment, a total of four extended pieces are formed, but the number of extended pieces is not limited.
(2) In the above embodiment, only the tip of the extended piece is urged to the corrugated tube by the lock structure, but it may be provided at any location of the extended piece.
(3) In the above-described embodiment, the distal end portion of the extending piece is urged to the corrugated tube by the lock structure. However, the present invention is not limited to this, and it may be urged by means such as tape winding.
(4) In the above-described embodiment, the locking portion is formed over the entire length of both extending pieces. However, the present invention is not limited thereto, and the locking portion may be formed only in a partial region of the extending piece.
(5) In the above-described embodiment, the entire periphery of the corrugated tube is covered with the extending piece, but it may be disposed only on a part of the peripheral surface of the corrugated surface.
(6) In the above-described embodiment, the combined state of the ferrite pair is an annular shape, but it may be a annular shape or the like.

１０…コルゲートチューブ
１１…谷部
１２…山部
２０…フェライトコア対
２２…分割面
３１Ａ、３１Ｂ…第１、第２ホルダ対（ホルダ対）
３１Ｈ…挿通孔
３３…延出片（３３ＡＦ…第１前方延出片、３３ＡＢ…第１後方延出片、３３ＢＦ…第２前方延出片、３３ＢＢ…第２後方延出片）
３４…リブ（係止部）
３５Ａ、３５Ｂ…本体部
ＷＨ…電線束（ワイヤハーネス） DESCRIPTION OF SYMBOLS 10 ... Corrugated tube 11 ... Valley part 12 ... Mountain part 20 ... Ferrite core pair 22 ... Dividing surface 31A, 31B ... 1st, 2nd holder pair (holder pair)
31H ... Insertion hole 33 ... Extension piece (33AF ... 1st front extension piece, 33AB ... 1st back extension piece, 33BF ... 2nd front extension piece, 33BB ... 2nd back extension piece)
34 ... Rib (locking part)
35A, 35B ... Main body WH ... Electric wire bundle (wire harness)

Claims (4)

山部と谷部とが交互に繰り返された蛇腹状に形成されて可撓性を有するとともに、内部にワイヤハーネスを挿通可能なコルゲートチューブに装着されるノイズ吸収具であって、
前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることでリング状に合体されるフェライトコア対と、
各フェライトコア対をそれぞれ収容可能であり、前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることで前記コルゲートチューブの外周面を包囲可能なリング状に合体可能なホルダ対と、
前記ホルダ対に設けられ、前記コルゲートチューブの谷部に係止可能な係止部とを備え、
前記ホルダ対が、前記フェライトコア対をそれぞれ収容可能な本体部と、この本体部から前記コルゲートチューブの長手方向に沿って張り出し形成された延出片と、を有し、
前記ホルダ対に設けられた延出片が、前記ホルダ対の合体時に前記コルゲートチューブの全周を覆った状態になることを特徴とするノイズ吸収具。 A noise absorber that is formed in a bellows shape in which peaks and valleys are alternately repeated and has flexibility, and is attached to a corrugated tube through which a wire harness can be inserted.
A ferrite core pair that is divided along the insertion direction of the wire harness and merged into a ring shape by abutting the divided surfaces,
A holder that can accommodate each ferrite core pair, is divided along the insertion direction of the wire harness, and can be combined into a ring shape that can surround the outer peripheral surface of the corrugated tube by butting the divided surfaces together Vs.
Provided with the holder pair, provided with a locking portion that can be locked to the valley of the corrugated tube ,
The holder pair has a main body part that can accommodate the ferrite core pair, respectively, and an extending piece that extends from the main body part along the longitudinal direction of the corrugated tube,
The noise absorbing tool , wherein the extended piece provided on the holder pair covers the entire circumference of the corrugated tube when the holder pair is united . 山部と谷部とが交互に繰り返された蛇腹状に形成されて可撓性を有するとともに、内部にワイヤハーネスを挿通可能なコルゲートチューブに装着されるノイズ吸収具であって、
前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることでリング状に合体されるフェライトコア対と、
各フェライトコア対をそれぞれ収容可能であり、前記ワイヤハーネスの挿通方向に沿って分割されて、その分割面同士を突き合わせることで前記コルゲートチューブの外周面を包囲可能なリング状に合体可能なホルダ対と、
前記ホルダ対に設けられ、前記コルゲートチューブの谷部に係止可能な係止部とを備え、
前記ホルダ対は、前記フェライトコア対をそれぞれ収容可能な本体部と、この本体部から前記コルゲートチューブの長手方向に沿って張り出し形成された延出片とからなり、
前記係止部は前記延出片の内面側に形成されていることを特徴とするノイズ吸収具。 A noise absorber that is formed in a bellows shape in which peaks and valleys are alternately repeated and has flexibility, and is attached to a corrugated tube through which a wire harness can be inserted.
A ferrite core pair that is divided along the insertion direction of the wire harness and merged into a ring shape by abutting the divided surfaces,
A holder that can accommodate each ferrite core pair, is divided along the insertion direction of the wire harness, and can be combined into a ring shape that can surround the outer peripheral surface of the corrugated tube by butting the divided surfaces together Vs.
Provided with the holder pair, provided with a locking portion that can be locked to the valley of the corrugated tube,
The holder pair is composed of a main body portion that can accommodate the ferrite core pair, and an extending piece that extends from the main body portion along the longitudinal direction of the corrugated tube,
Noise absorber the locking portion you characterized in that formed on the inner surface side of the extension piece. 前記延出片は前記本体部から前記コルゲートチューブの長手方向に沿いつつ相互に反対方向へ向けて延出されるとともに、
前記係止部は、各延出片において前記コルゲートチューブの前記谷部のピッチに合わせて複数個所に配されていることを特徴とする請求項２に記載のノイズ吸収具。 The extending pieces extend from the main body portion in opposite directions while being along the longitudinal direction of the corrugated tube,
The noise absorber according to claim 2, wherein the locking portions are arranged at a plurality of locations in accordance with the pitch of the valley portions of the corrugated tube in each extending piece. 前記延出片は、その先端部が前記コルゲートチューブ側へ押し付けられるように付勢されており、前記係止部は少なくとも前記延出片の先端部に配されていることを特徴とする請求項１ないし請求項３のいずれか一項に記載のノイズ吸収具。 Claim wherein the extension piece is characterized in that its distal end portion the is biased manner pressed against the corrugated tube side, wherein the locking portion is disposed on the tip portion of at least the extending piece The noise absorber according to any one of claims 1 to 3 .
JP2013155972A 2013-07-26 2013-07-26 Noise absorber Expired - Fee Related JP6083344B2 (en)

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JP7508769B2 (en) * 2019-10-31 2024-07-02 住友電装株式会社 Wire Harness
JP6897822B2 (en) * 2020-01-20 2021-07-07 住友電装株式会社 Grommets and wire harnesses
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