JP2011187644A

JP2011187644A - Cord bushing

Info

Publication number: JP2011187644A
Application number: JP2010050721A
Authority: JP
Inventors: Koji Ogawa; 宏二小川
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2010-03-08
Filing date: 2010-03-08
Publication date: 2011-09-22

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a cord bushing which can protect a cord and can enhance mothproof properties, dust-proof properties, and drip-proof properties even if the cord bushings are attached to through holes of various dimensions, and cords of various shapes are made to penetrate the bushings, and hardly deteriorates workability. <P>SOLUTION: The cord bushing 1 includes a cylindrical part 2 of a cylindrical shape, a plurality of collar-shaped parts 4 which are formed in collar shapes throughout all circumferences with respect to an outer peripheral face 21 of one end side 2a of the cylindrical part, and arranged while leaving a space to an axial direction of the cylindrical part, and an anti-dropping part 7 which is provided on an outer peripheral face of the other end side 2b of the cylindrical part for preventing a band tightening the other end side from being dropped. The cylindrical part and the collar-shaped parts are constituted of elastic bodies. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、製品筐体のコード貫通口などで、コードと貫通口との隙間を塞ぐコードブッシュに関する。 The present invention relates to a cord bush that closes a gap between a cord and a through-hole at a cord through-hole or the like of a product housing.

従来、製品筐体のコード貫通口などで、コードと貫通口との隙間を塞いで、コードの保護や、製品内部への水滴の侵入を防ぐコードブッシュが用いられている。例えば、弾力性を有する材質から成形され、貫通させるコードより幾分細目の内径とされた先端部分を備える筒状のコードブッシュと、コードブッシュの内面の根本部分にコードより幾分細めのリング状の突起を設ける技術が開示されている（例えば、特許文献１参照）。コードブッシュの先端部分と根元部分の両方をコードと密着させることで、水滴の侵入の防止を図っている。 2. Description of the Related Art Conventionally, a cord bush is used in which a gap between a cord and a through-hole is closed by a cord through-hole in a product housing to protect the cord and prevent water droplets from entering a product. For example, a cylindrical cord bush formed of an elastic material and having a tip portion whose inner diameter is slightly narrower than the cord to be penetrated, and a ring shape slightly narrower than the cord at the base portion of the inner surface of the cord bush A technique for providing a protrusion is disclosed (for example, see Patent Document 1). The intrusion of water droplets is prevented by bringing both the tip and the base of the cord bush into close contact with the cord.

特開昭６２−２４７５９８号公報Japanese Patent Laid-Open No. 62-247598

しかしながら、上記従来の技術によれば、コードブッシュの外周面を伝わってくる水滴に対しては水滴浸入防止構造となっていない。そのため、コードブッシュの外周面を伝わってくる水滴が製品内部に浸入しやすいという問題があった。 However, according to the above-described conventional technology, the water droplet intrusion preventing structure is not provided for the water droplets transmitted along the outer peripheral surface of the cord bush. Therefore, there has been a problem that water droplets transmitted along the outer peripheral surface of the cord bush are likely to enter the inside of the product.

また、平形コードのように円形ではなく楕円等の異形コードに対しては、材質の弾力性だけではリング状の突起がコード形状に追従できず隙間が発生してしまう。そのため、その隙間から、コードを伝ってくる水滴が製品内部に浸入してしまうという問題があった。また、コードブッシュ先端部がコードより幾分細目となっているため、コードブッシュの先端部側からコードを挿入する場合、作業性が悪いという問題があった。 Further, for a deformed code such as an ellipse instead of a circle like a flat cord, the ring-shaped protrusion cannot follow the code shape only by the elasticity of the material, and a gap is generated. For this reason, there is a problem that water droplets traveling along the cord enter the product from the gap. Further, since the tip end portion of the cord bush is slightly finer than the cord, there is a problem that workability is poor when the cord is inserted from the tip end portion side of the cord bush.

また、コードブッシュの根元には、つばが１個しか設けられていないため、コードブッシュの外径部の弾力性だけで貫通口に固定されることになる。よって、コードに押込み荷重または引張り荷重が加わるとコードブッシュが貫通口から外れやすいといった問題や、製品筐体のコード貫通口の寸法が変わると貫通口に固定しにくいという問題があった。 Further, since only one brim is provided at the base of the cord bush, the cord bush is fixed to the through hole only by the elasticity of the outer diameter portion of the cord bush. Therefore, there is a problem that the cord bushing is easily detached from the through hole when a pushing load or a tensile load is applied to the cord, and a problem that it is difficult to fix the cord bush to the through hole when the size of the cord through hole of the product housing is changed.

また、コードブッシュの先端部の内径に適合しないコードが挿入された場合、防滴効果の低下や、コードの挿入作業性の悪化が生じるという問題があった。例えば、コードブッシュの先端部の内径よりも小さいコードが挿入された場合、コードブッシュの先端部の内径とコードとの間に隙間が生じ、防滴効果が低下する。また、リング状の突起とコードとの間でも、隙間の発生やつぶし代減少による圧接力の低下により、密着性が悪化して防滴効果が低下する。また、コードブッシュ先端部の内径よりも太いコードを挿入する場合、コード挿入時の摩擦力が大きくなるため挿入作業性が悪化する。 In addition, when a cord that does not match the inner diameter of the tip end portion of the cord bush is inserted, there is a problem that the drip-proof effect is lowered and the cord insertion workability is deteriorated. For example, when a cord smaller than the inner diameter of the tip end portion of the cord bush is inserted, a gap is generated between the inner diameter of the tip end portion of the cord bush and the cord, and the drip-proof effect is reduced. In addition, even between the ring-shaped protrusion and the cord, the adhesion is deteriorated and the drip-proof effect is reduced due to the decrease in the pressure contact force due to the generation of a gap and the reduction of the crushing allowance. Also, when a cord thicker than the inner diameter of the cord bush tip is inserted, the frictional force at the time of cord insertion is increased, and the insertion workability is deteriorated.

本発明は、上記に鑑みてなされたものであって、様々な寸法の貫通口に取り付けたり、様々な形状のコードを貫通させたりしても、コードの保護や、防虫性・防塵性・防滴性の向上を図ることができ、作業性も低下しにくいコードブッシュを得ることを目的とする。 The present invention has been made in view of the above, and even if it is attached to a through-hole having various dimensions or a cord having various shapes is penetrated, the cord can be protected, insect-proof, dust-proof, and anti-proof. An object of the present invention is to obtain a cord bushing that can improve the dropability and hardly deteriorate the workability.

上述した課題を解決し、目的を達成するために、本発明は、筒状形状の円筒部と、円筒部の一端側の外周面に対して全周にわたって鍔状に形成され、円筒部の軸方向に間隔をおいて複数設けられた鍔状部と、円筒部の他端側の外周面に設けられて、他端側を締め付けるバンドの脱落を防ぐ脱落防止部と、を備え、円筒部および鍔状部は、弾性体で構成されることを特徴とする。 In order to solve the above-mentioned problems and achieve the object, the present invention is formed in a bowl shape over the entire circumference with respect to the cylindrical portion of the cylindrical shape and the outer peripheral surface on one end side of the cylindrical portion, and the shaft of the cylindrical portion A plurality of bowl-shaped portions spaced apart in the direction, and a drop-off preventing portion that is provided on the outer peripheral surface of the other end side of the cylindrical portion to prevent the band that tightens the other end side from falling off. The hook-shaped portion is formed of an elastic body.

本発明によれば、様々な寸法の貫通口に取り付けたり、様々な形状のコードを貫通させたりしても、コードの保護や、防虫性・防塵性・防滴性の向上を図ることができ、作業性も低下しにくいコードブッシュを得ることができるという効果を奏する。 According to the present invention, it is possible to protect the cord and improve the insect-proof, dust-proof and drip-proof properties even if it is attached to a through-hole of various sizes or a cord of various shapes is penetrated. In addition, there is an effect that it is possible to obtain a cord bushing in which workability is not easily lowered.

図１は、本発明の実施の形態１にかかるコードブッシュの外観を示す側面図である。FIG. 1 is a side view showing an appearance of a cord bush according to a first embodiment of the present invention. 図２は、図１に示すコードブッシュを先端部側から見た正面図である。FIG. 2 is a front view of the cord bush shown in FIG. 1 as viewed from the distal end side. 図３は、図２に示すＡ−Ａ線に沿った矢視断面図である。3 is a cross-sectional view taken along line AA shown in FIG. 図４は、製品筐体のコード貫通口に取り付けられるとともに、内側に屈曲コードが挿入されたコードブッシュの状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state of the cord bush attached to the cord through hole of the product housing and having a bent cord inserted therein. 図５は、本発明の実施の形態２に係るコードブッシュの外観を示す側面図である。FIG. 5 is a side view showing an appearance of a cord bush according to Embodiment 2 of the present invention. 図６は、図５に示すコードブッシュを先端部側から見た正面図である。FIG. 6 is a front view of the cord bush shown in FIG. 5 as viewed from the distal end side. 図７は、図６に示すＢ−Ｂ線に沿った矢視断面図である。7 is a cross-sectional view taken along the line BB shown in FIG. 図８は、本発明の実施の形態３に係るコードブッシュの外観を示す側面図である。FIG. 8 is a side view showing the appearance of the cord bush according to Embodiment 3 of the present invention. 図９は、図８に示すコードブッシュを先端部側から見た正面図である。FIG. 9 is a front view of the cord bush shown in FIG. 8 as viewed from the distal end side. 図１０は、図９に示すＣ−Ｃ線に沿った矢視断面図である。FIG. 10 is a cross-sectional view taken along the line CC shown in FIG. 図１１は、図８に示すＤ線およびＥ線でコードブッシュを切断した状態を示す図である。FIG. 11 is a diagram illustrating a state in which the cord bush is cut along the D line and the E line illustrated in FIG. 8.

以下に、本発明の実施の形態にかかるコードブッシュを図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Below, the cord bush concerning an embodiment of the invention is explained in detail based on a drawing. Note that the present invention is not limited to the embodiments.

実施の形態１．
図１は、本発明の実施の形態１にかかるコードブッシュの外観を示す側面図である。図２は、図１に示すコードブッシュを先端部側から見た正面図である。図３は、図２に示すＡ−Ａ線に沿った矢視断面図である。図４は、製品筐体のコード貫通口に取り付けられるとともに、内側に屈曲コードが挿入されたコードブッシュの状態を示す断面図である。 Embodiment 1 FIG.
FIG. 1 is a side view showing an appearance of a cord bush according to a first embodiment of the present invention. FIG. 2 is a front view of the cord bush shown in FIG. 1 as viewed from the distal end side. 3 is a cross-sectional view taken along line AA shown in FIG. FIG. 4 is a cross-sectional view showing a state of the cord bush attached to the cord through hole of the product housing and having a bent cord inserted therein.

図１〜図４に示すように、コードブッシュ１は、円筒部２、鍔状部４、脱落防止部７を備える。コードブッシュ１は、ゴム等の弾力性を有する弾性体で構成されている。円筒部２は、筒状形状を呈し、その外周面２１が根元部（一端側）２ａから先端部（他端側）２ｂに向けて細くなる略円錐台形状を呈している。また、円筒部２の内周面２２も根元部２ａから先端部２ｂに向けて細くなる略円錐台形状を呈している。円筒部２の根元部２ａでの外径寸法は、製品筐体１１のコード貫通口３の内径と略同等か若干大きめとなっている。先端部２ｂにおける円筒部２の内径寸法は、挿入されるコード６の外径寸法以上であることが望ましい。 As shown in FIGS. 1 to 4, the cord bush 1 includes a cylindrical portion 2, a bowl-shaped portion 4, and a drop-off preventing portion 7. The cord bush 1 is made of an elastic body having elasticity such as rubber. The cylindrical portion 2 has a cylindrical shape, and has an approximately frustoconical shape in which the outer peripheral surface 21 becomes narrower from the root portion (one end side) 2a toward the tip end portion (the other end side) 2b. Further, the inner peripheral surface 22 of the cylindrical portion 2 also has a substantially truncated cone shape that becomes narrower from the root portion 2a toward the tip portion 2b. The outer diameter of the base portion 2a of the cylindrical portion 2 is substantially the same as or slightly larger than the inner diameter of the cord through-hole 3 of the product housing 11. The inner diameter dimension of the cylindrical portion 2 at the distal end portion 2b is desirably equal to or larger than the outer diameter dimension of the cord 6 to be inserted.

鍔状部４は、円筒部２の根元部２ａの外周面に対して全周にわたって鍔状に形成されている。鍔状部４は、製品筐体１１のコード貫通口３よりも大きな外径で形成されている。円筒部２の軸方向に間隔をおいて、２つの鍔状部４が近接するように設けられている。 The bowl-shaped portion 4 is formed in a bowl shape over the entire circumference with respect to the outer peripheral surface of the root portion 2 a of the cylindrical portion 2. The bowl-shaped portion 4 is formed with an outer diameter larger than that of the cord through hole 3 of the product housing 11. The two hook-shaped parts 4 are provided close to each other with an interval in the axial direction of the cylindrical part 2.

鍔状部４も弾性体で構成されているので、鍔状部４の外周部４ａをたわませることで、製品筐体１１のコード貫通口３に容易にコードブッシュ１を挿入することができる。コードブッシュ１の挿入後は、コード貫通口３よりも外径が大きな鍔状部４で製品筐体１１を挟みこむので、コードブッシュ１に押込み荷重や引張り荷重が加わった場合でも、コード貫通口３からコードブッシュ１が脱落しにくい。 Since the hook-like portion 4 is also made of an elastic body, the cord bush 1 can be easily inserted into the cord through-hole 3 of the product housing 11 by bending the outer peripheral portion 4 a of the hook-like portion 4. . After the cord bush 1 is inserted, the product casing 11 is sandwiched by the hook-shaped portion 4 having an outer diameter larger than that of the cord through-hole 3, so that even if a pushing load or a tensile load is applied to the cord bush 1, the cord through-hole 3 makes it difficult for the cord bush 1 to fall off.

また、円筒部２の根元部２ａにおける外径寸法は、製品筐体１１のコード貫通口３の内径と略同等か若干大きめの外径寸法となっているため、円筒部２とコード貫通口３との間から虫や塵が製品内部に侵入するのを防ぐことができる。さらに、円筒部２の外周面２１を伝わってくる水滴１２があった場合でも、製品筐体１１のコード貫通口３よりも大きな外径を持つ鍔状部４により、製品筐体１１のコード貫通口３からの水滴１２の浸入を防止できる。 In addition, since the outer diameter of the base portion 2a of the cylindrical portion 2 is substantially the same as or slightly larger than the inner diameter of the cord through-hole 3 of the product housing 11, the cylindrical portion 2 and the cord through-hole 3 Insects and dust can be prevented from entering inside the product. Further, even when there is a water droplet 12 transmitted along the outer peripheral surface 21 of the cylindrical portion 2, the cord penetration of the product housing 11 is performed by the hook-like portion 4 having an outer diameter larger than the cord penetration port 3 of the product housing 11. Intrusion of the water droplet 12 from the mouth 3 can be prevented.

脱落防止部７は、円筒部２の外周面２１に対して全周にわたって鍔状に設けられている。円筒部２の軸方向に間隔をおいて、２つの脱落防止部７が近接するように設けられている。この構造により、近接するように設けられた脱落防止部７の間でバンド９を締め付けることができる。円筒部２の先端部２ｂにおける内径寸法は、コード６の外形寸法より大きければ、円筒部２の内周面２２とコード６との間に隙間ができる。この場合、コード６を容易にコードブッシュ１に挿入することができる。 The drop-off prevention part 7 is provided in a bowl shape over the entire circumference with respect to the outer peripheral surface 21 of the cylindrical part 2. Two drop-off prevention parts 7 are provided close to each other with an interval in the axial direction of the cylindrical part 2. With this structure, the band 9 can be tightened between the drop-off prevention portions 7 provided so as to be close to each other. If the inner diameter dimension at the distal end 2 b of the cylindrical portion 2 is larger than the outer dimension of the cord 6, a gap is formed between the inner peripheral surface 22 of the cylindrical portion 2 and the cord 6. In this case, the cord 6 can be easily inserted into the cord bush 1.

コード６の挿入後は、弾力性を有する円筒部２をバンド９で締め付けて圧接することで、コード６と内周面２２との隙間を解消して密着させることができる。したがって、虫、塵および水滴の侵入を防ぐことができる。また、バンド９は、近接する２つの脱落防止部７の間に位置するため、ほとんど脱落することはない。また、円筒部２の先端部２ｂをバンド９で締め付ける構造としたため、平形コードのように円形ではなく楕円などの異形コードに対しても、円筒部２の内周面２２がコード６の形状に追従して水滴の浸入を防止することができる。 After the cord 6 is inserted, the cylindrical portion 2 having elasticity is fastened by the band 9 and pressed, so that the gap between the cord 6 and the inner peripheral surface 22 can be eliminated and brought into close contact. Therefore, invasion of insects, dust and water droplets can be prevented. Moreover, since the band 9 is located between the two drop-off prevention portions 7 that are close to each other, the band 9 hardly falls off. Further, since the distal end portion 2b of the cylindrical portion 2 is tightened with the band 9, the inner peripheral surface 22 of the cylindrical portion 2 has the shape of the cord 6 even for a deformed cord such as an ellipse instead of a circle like a flat cord. It is possible to prevent intrusion of water droplets by following.

なお、脱落防止部７の個数は２つに限られない。少なくとも１つの脱落防止部７が形成されていれば、その脱落部よりも根元部２ａ側にバンド９を設ければ、先端部２ｂ側からのバンド９の脱落を防ぐことができる。また、脱落防止部７を３つ以上設ければ、バンド９による締め付け可能な位置が増えるので、締め付け位置の選択や、複数個所でのバンド９による締め付けが可能となる。また、脱落防止部７は、外周面２１の全周にわたって形成されていなくてもよい。例えば、鍔状の脱落防止部７の一部に切り欠きを有していても、バンド９の脱落を防止するという効果を得ることができる。 Note that the number of dropout prevention units 7 is not limited to two. If at least one drop-off prevention part 7 is formed, if the band 9 is provided on the root part 2a side than the drop-off part, the band 9 can be prevented from dropping off from the tip part 2b side. If three or more drop prevention portions 7 are provided, the number of positions where the band 9 can be tightened increases, so that it is possible to select a tightening position and tighten the band 9 at a plurality of locations. Further, the drop-off prevention unit 7 may not be formed over the entire circumference of the outer peripheral surface 21. For example, even if a part of the bowl-shaped dropout prevention part 7 has a cutout, the effect of preventing the band 9 from dropping off can be obtained.

また、円筒部２の外周面２１、内周面２２の形状は、円錐台形状に限られない。例えば、根元部２ａと先端部２ｂとで寸法にほとんど差の無い円筒形状としても構わない。 Moreover, the shape of the outer peripheral surface 21 and the inner peripheral surface 22 of the cylindrical part 2 is not restricted to a truncated cone shape. For example, the base portion 2a and the tip portion 2b may have a cylindrical shape with little difference in dimensions.

実施の形態２．
図５は、本発明の実施の形態２に係るコードブッシュの外観を示す側面図である。図６は、図５に示すコードブッシュを先端部側から見た正面図である。図７は、図６に示すＢ−Ｂ線に沿った矢視断面図である。上記実施の形態と同様の構成については、同様の符号を用いて詳細な説明を省略する。 Embodiment 2. FIG.
FIG. 5 is a side view showing an appearance of a cord bush according to Embodiment 2 of the present invention. FIG. 6 is a front view of the cord bush shown in FIG. 5 as viewed from the distal end side. 7 is a cross-sectional view taken along the line BB shown in FIG. About the structure similar to the said embodiment, detailed description is abbreviate | omitted using the same code | symbol.

本実施の形態２では、脱落防止部７が、円筒部２の先端部２ｂの外周面に対して設けられた２つの突起となっている。この突起のそれぞれには、円筒部２の円周方向に沿って貫通する貫通孔２０が形成されている。貫通孔２０にバンド９を通して、円筒部２の先端部２ｂ側を締め付けることで、水滴の侵入を防止しつつバンド９の脱落を防止することができる。脱落防止部７が、実施の形態１で説明したように全周にわたって鍔状に設けられていないため、近接した脱落防止部７同士の間でバンド９を締め付け作業する必要がなく、作業が邪魔されにくい。そのため、バンド９の締め付け作業が容易になる。 In the second embodiment, the drop-off preventing portion 7 is two protrusions provided on the outer peripheral surface of the distal end portion 2 b of the cylindrical portion 2. Each of the protrusions is formed with a through hole 20 that penetrates along the circumferential direction of the cylindrical portion 2. By tightening the tip 2b side of the cylindrical portion 2 through the band 9 through the through hole 20, it is possible to prevent the band 9 from falling off while preventing intrusion of water droplets. Since the drop-off prevention part 7 is not provided in a bowl shape over the entire circumference as described in the first embodiment, there is no need to tighten the band 9 between adjacent drop-off prevention parts 7, and the operation is obstructive. It is hard to be done. Therefore, the band 9 can be easily tightened.

また、製品出荷時にバンド９を貫通孔２０に通して仮止めしておけば、コードブッシュ１とバンド９とが一体となるために、バンド９を紛失しにくくすることができる。また、バンド９が取り付けてあることが視覚的に確認しやすいため、施工業者がバンド９を締め付ける作業を忘れることを防止することができる。なお、脱落防止部７は、１つの突起で構成されてもよいし、３つ以上の突起で構成されてもよい。 Further, if the band 9 is temporarily fixed by passing through the through hole 20 at the time of product shipment, the cord bush 1 and the band 9 are integrated, so that the band 9 can be hardly lost. Further, since it is easy to visually confirm that the band 9 is attached, it is possible to prevent the contractor from forgetting the work of tightening the band 9. In addition, the drop-off prevention unit 7 may be configured with one protrusion, or may be configured with three or more protrusions.

実施の形態３．
図８は、本発明の実施の形態３に係るコードブッシュの外観を示す側面図である。図９は、図８に示すコードブッシュを先端部側から見た正面図である。図１０は、図９に示すＣ−Ｃ線に沿った矢視断面図である。上記実施の形態と同様の構成については、同様の符号を用いて詳細な説明を省略する。 Embodiment 3 FIG.
FIG. 8 is a side view showing the appearance of the cord bush according to Embodiment 3 of the present invention. FIG. 9 is a front view of the cord bush shown in FIG. 8 as viewed from the distal end side. FIG. 10 is a cross-sectional view taken along the line CC shown in FIG. About the structure similar to the said embodiment, detailed description is abbreviate | omitted using the same code | symbol.

本実施の形態３では、円筒部２の根元部２ａから先端部２ｂまで、円筒部２の軸方向に間隔をおいて鍔状部４が連続して形成されている。円筒部２の外周面２１は、円錐台形状を呈しているので、いずれの鍔状部４の間に製品筐体１１を挟み込ませるかで、コード貫通口３に嵌まる円筒部２の外径を異ならせることができる。したがって、コード貫通口３の内径に合わせて、円筒部２の外径を選択することで、円筒部２をコード貫通口３に適切に密着させることができ、コードの保護や、防虫性・防塵性・防滴性の向上を図ることができる。また、１種類のコードブッシュ１で様々な寸法に対応できるため、コードブッシュ１の製作に必要な金型の種類も減らすことができるので、金型の製造費を抑制できる効果もある。なお、鍔状部４は、３つ以上設けられていればよい。鍔状部４が３つ以上設けられていれば、コード貫通口３の内径に合わせた円筒部２の外径の選択を行うことができる。 In the third embodiment, the hook-like portion 4 is continuously formed from the root portion 2a to the tip portion 2b of the cylindrical portion 2 with an interval in the axial direction of the cylindrical portion 2. Since the outer peripheral surface 21 of the cylindrical portion 2 has a truncated cone shape, the outer diameter of the cylindrical portion 2 that fits in the cord through-hole 3 depending on which of the hook-shaped portions 4 the product casing 11 is sandwiched between. Can be different. Therefore, by selecting the outer diameter of the cylindrical portion 2 in accordance with the inner diameter of the cord through-hole 3, the cylindrical portion 2 can be properly brought into close contact with the cord through-hole 3, and the cord can be protected, insect-proof and dust-proof. And drip-proof property can be improved. In addition, since one type of cord bush 1 can cope with various dimensions, the types of molds necessary for manufacturing the cord bush 1 can be reduced, so that there is an effect that the manufacturing cost of the molds can be suppressed. In addition, the hook-shaped part 4 should just be provided three or more. If three or more hook-shaped parts 4 are provided, the outer diameter of the cylindrical part 2 can be selected according to the inner diameter of the cord through-hole 3.

図１１は、図８に示すＤ線およびＥ線でコードブッシュを切断した状態を示す図である。このように、コードブッシュ１を切断することで、製品筐体１１のコード貫通口３に適した外径寸法となる円筒部２部分だけを選択して用いることもできる。 FIG. 11 is a diagram illustrating a state in which the cord bush is cut along the D line and the E line illustrated in FIG. 8. Thus, by cutting the cord bush 1, it is possible to select and use only the cylindrical portion 2 portion having an outer diameter suitable for the cord penetration port 3 of the product housing 11.

なお、本実施の形態３では、円筒部２の先端部２ｂ側に形成された鍔状部４の間で、バンド９による締め付けを行ってもよい。この場合、円筒部２の先端部２ｂ側に形成された鍔状部４が、バンド９の脱落を防止する脱落防止部として機能することとなる。 In the third embodiment, the band 9 may be used for tightening between the flanges 4 formed on the tip 2b side of the cylindrical portion 2. In this case, the hook-shaped portion 4 formed on the distal end portion 2b side of the cylindrical portion 2 functions as a drop-off preventing portion that prevents the band 9 from dropping off.

以上のように、本発明にかかるコードブッシュは製品筐体のコード貫通口とコードとの隙間を塞ぐのに有用である。 As described above, the cord bush according to the present invention is useful for closing the gap between the cord through hole of the product housing and the cord.

１コードブッシュ
２円筒部
２ａ根元部（一端側）
２ｂ先端部（他端側）
３コード貫通口
４鍔状部
４ａ外周部
６コード
７脱落防止部
９バンド
１１製品筐体
１２水滴
２０貫通孔
２１外周面
２２内周面 1 Cord bush 2 Cylindrical part 2a Root part (one end side)
2b Tip (other end side)
DESCRIPTION OF SYMBOLS 3 Cord through-hole 4 Corrugated part 4a Outer peripheral part 6 Cord 7 Drop-off prevention part 9 Band 11 Product housing 12 Water drop 20 Through-hole 21 Outer peripheral surface 22 Inner peripheral surface

Claims

A cylindrical part of a cylindrical shape;
A bowl-shaped part formed in a bowl shape over the entire circumference with respect to the outer peripheral surface on one end side of the cylindrical part, and a plurality of bowl-shaped parts provided at intervals in the axial direction of the cylinder part;
Provided on the outer peripheral surface on the other end side of the cylindrical portion, and a drop-off preventing portion for preventing the band that tightens the other end side from falling off,
The cord bush characterized by the said cylindrical part and the said hook-shaped part being comprised with an elastic body.

The drop-off prevention part is formed in a bowl shape over substantially the entire circumference with respect to the outer peripheral surface on the other end side of the cylindrical part, and a plurality of drop-off prevention parts are provided at intervals in the axial direction of the cylindrical part. The cord bush according to claim 1.

The drop-off prevention portion is a plurality of protrusions provided on the outer peripheral surface on the other end side of the cylindrical portion,
The cord bush according to claim 1, wherein a through-hole penetrating along the circumferential direction is formed in the protrusion.

The cylindrical portion has a substantially frustoconical shape in which an inner peripheral surface and an outer peripheral surface become narrower from the one end side toward the other end side,
The cord bush according to any one of claims 1 to 3, wherein three or more hook-shaped portions are provided.