JP2023169474A - Swirl shaped protection tube - Google Patents

Swirl shaped protection tube Download PDF

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JP2023169474A
JP2023169474A JP2022080586A JP2022080586A JP2023169474A JP 2023169474 A JP2023169474 A JP 2023169474A JP 2022080586 A JP2022080586 A JP 2022080586A JP 2022080586 A JP2022080586 A JP 2022080586A JP 2023169474 A JP2023169474 A JP 2023169474A
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spiral
protection tube
cable
shaped protection
shaped
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JP7411263B2 (en
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公治 岩瀬
Kimiharu Iwase
岳人 亀山
Takehito Kameyama
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IWASE KK
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Abstract

To provide a swirl shaped protection tube that can be easily installed after a cable is completed and prevents a wire from being exposed even when a wire portion is bent, an installation jig for attaching the swirl shaped protection tube to the cable, and a mold for manufacturing the swirl shaped protection tube.SOLUTION: A swirl shaped protection tube 1 for a wire bundle and a cable 50 made of a thermoplastic resin 100 molded into a roughly cylindrical shape, includes: an opening/closing region 2 disposed over the entire region along a longitudinal direction of the swirl shaped protection tube 1; and a base region 11 to maintain the required strength of the swirl shaped protection tube 1, wherein thicknesses T1 and T2 of a cylindrical inner end 13 and a cylindrical outer end 12 are formed to be thinner than a thickness T0 of the base region 11.SELECTED DRAWING: Figure 1

Description

特許法第３０条第２項適用申請有り 掲載日 令和３年１１月２５日 掲載アドレス ｈｔｔｐｓ：／／ｗｗｗ．ｉｗａｓｅ．ｃｏ．ｊｐ／ＥＸＬＯＮ＿ＰＶＣ＿ＡＦＣＯ＿ＲｏｌｌＴｙｐｅ１．ｐｄｆApplication for application of Article 30, Paragraph 2 of the Patent Act Published date: November 25, 2021 Published address: https://www. iwase. co. jp/EXLON_PVC_AFCO_RollType1. pdf

本発明は、電線束やケーブルを保護、絶縁するための被膜材に関し、詳しくは、電線束やケーブルへの装着作業が容易な樹脂製の渦巻き形状保護チューブと、渦巻き形状保護チューブをケーブルに装着するための装着治具、及び渦巻き形状保護チューブ製造用金型（口金部）に関する。 The present invention relates to a coating material for protecting and insulating wire bundles and cables, and more specifically, a resin spiral-shaped protective tube that is easy to attach to wire bundles and cables, and a spiral-shaped protective tube that is attached to the cable. The present invention relates to a mounting jig for manufacturing a spiral protection tube and a mold (mouthpiece) for manufacturing a spiral protection tube.

従来から、電線束やケーブルを保護、絶縁するための被膜材としては、一般的に所謂丸チューブやビニールテープが使用されていた。しかし、丸チューブは管状であるために、電線に丸チューブを先通した後にコネクターを取付けてケーブルを完成する必要があり、被膜材の装着手順に制限があった。また、ケーブル完成後に丸チューブを装着する場合は、コネクターよりも内径が大きな丸チューブを使用し、装着後に丸チューブがずれてケーブルの電線が露出しないように、所要箇所を結束材で締結するなど、装着作業が追加となる問題があった。さらに、ビニールテープは装着作業が非常に煩雑である問題があった。 Conventionally, so-called round tubes and vinyl tape have generally been used as coating materials for protecting and insulating wire bundles and cables. However, since the round tube is tubular, it is necessary to first thread the round tube through the electric wire and then attach the connector to complete the cable, which limits the procedure for attaching the coating material. In addition, when attaching a round tube after the cable is completed, use a round tube with an inner diameter larger than the connector, and use binding material to secure the necessary points to prevent the round tube from shifting and exposing the cable wires after installation. However, there was a problem in that additional installation work was required. Furthermore, vinyl tape has the problem of being very complicated to attach.

そこで、特許文献１には、ケーブルを完成した後から装着可能であって、比較的装着作業が容易な被膜材として、合成樹脂からなり山部と谷部とが交互に軸線方向に設けられた所謂コルゲートチューブが開示されている。 Therefore, Patent Document 1 discloses a coating material that is made of synthetic resin and has peaks and valleys alternately arranged in the axial direction, as a coating material that can be attached after the cable is completed and is relatively easy to attach. A so-called corrugated tube is disclosed.

特開２００４－３１２９４８号公報Japanese Patent Application Publication No. 2004-312948

しかし、特許文献１に記載のコルゲートチューブは、電線部分を大きく屈曲させると山部同士が干渉し屈曲状態が維持できない、若しくは、側面や背面が開口し電線が露出する問題があった。 However, the corrugated tube described in Patent Document 1 has a problem in that when the electric wire portion is bent significantly, the peaks interfere with each other and the bent state cannot be maintained, or the side and back surfaces are opened and the electric wire is exposed.

本発明は、上記課題を鑑みてなされたものであり、その具体的目的は、ケーブルを完成した後に容易に装着でき、電線部分を屈曲させても電線が露出しづらい渦巻き形状保護チューブと、渦巻き形状保護チューブをケーブルに装着するための装着治具、及び渦巻き形状保護チューブ製造用金型（口金部）を提供することにある。 The present invention was made in view of the above-mentioned problems, and its specific purpose is to provide a spiral-shaped protective tube that can be easily installed after a cable is completed, and that prevents the wire from being exposed even when the wire portion is bent; An object of the present invention is to provide a mounting jig for mounting a shape protection tube on a cable, and a mold (mouthpiece) for manufacturing a spiral shape protection tube.

本発明は、上記目的を達成するために案出されたものである。詳述するならば、熱可塑性樹脂を加熱溶融し、押し出し成型機で略円筒形状に成型された、電線束やケーブルを保護、絶縁するための渦巻き形状保護チューブであって、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設された電線束やケーブルに装着するための開閉部領域と、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設され前記渦巻き形状保護チューブの所要強度を維持するための基部領域とを有し、前記開閉部領域は円筒形状内側端部と円筒形状外側端部とが径方向に相互に重合された形状であり、前記基部領域は前記円筒形状内側端部と前記円筒形状外側端部の周方向の間に連設されており、前記円筒形状内側端部と前記円筒形状外側端部の厚さが前記基部領域の厚さに比べ薄く成型され、前記保護チューブの長さ方向と垂直方向となる向きからの断面視において、渦巻き形状となる構成からなる。 The present invention has been devised to achieve the above object. To be more specific, it is a spiral-shaped protection tube for protecting and insulating electric wire bundles and cables, which is made by heating and melting a thermoplastic resin and molding it into a substantially cylindrical shape using an extrusion molding machine. an opening/closing area for attaching to a wire bundle or cable disposed throughout the length direction of the spiral-shaped protective tube; a base region for maintaining the required strength of the spiral-shaped protection tube, and the opening/closing region has a shape in which a cylindrical inner end portion and a cylindrical outer end portion are overlapped with each other in the radial direction; The base region is connected between the cylindrical inner end and the cylindrical outer end in the circumferential direction, and the thickness of the cylindrical inner end and the cylindrical outer end is equal to that of the base region. The protection tube is formed thinner than the thickness, and has a spiral shape when viewed in cross section from a direction perpendicular to the length direction of the protection tube.

本発明の渦巻き形状保護チューブは、開閉部領域が渦巻き形状保護チューブの長さ方向に沿った向きの全域に亘って配設されていることから、電線の両端部にコネクターを取付け、ケーブルとして完成した後でも、若しくは、ケーブルや配線束などを車両や機械内などに配置した後でも装着できる効果がある。 Since the spiral protection tube of the present invention has an opening/closing area that spans the entire length of the spiral protection tube, connectors can be attached to both ends of the wire to complete the cable. It has the advantage that it can be installed even after the cables and wiring bundles have been placed inside the vehicle or machine.

本発明には、前記熱可塑性樹脂が軟質ポリ塩化ビニル樹脂PVCからなり、そのシヨアＡ硬度が７５以上９０以下である構成が含まれる。 The present invention includes a configuration in which the thermoplastic resin is made of a soft polyvinyl chloride resin PVC, and the Shore A hardness thereof is 75 or more and 90 or less.

本発明の渦巻き形状保護チューブは、所要硬度を有することで断面視における渦巻き形状を維持することができる。また、軟質ポリ塩化ビニル樹脂PVCを押し出し成型することで、渦巻き形状の内側面及び外側面のいずれもが平滑な表面となり、ケーブルに装着する作業時の開閉動作がスムーズとなり作業性が向上する効果がある。 The spiral-shaped protection tube of the present invention can maintain the spiral shape in cross-sectional view by having the required hardness. In addition, by extrusion molding the soft polyvinyl chloride resin PVC, both the inner and outer surfaces of the spiral shape become smooth, making opening and closing operations smooth when attaching to the cable, improving work efficiency. There is.

本発明には、前記開閉部領域の前記円筒形状内側端部と前記円筒形状外側端部の重合する部分の範囲が、略円筒形状の周方向の一周に対して、１／４以上であって３／４以下である構成が含まれる。 In the present invention, the range of the overlapping portion of the cylindrical inner end and the cylindrical outer end of the opening/closing region is 1/4 or more with respect to one circumference in the circumferential direction of the substantially cylindrical shape. Includes configurations that are 3/4 or less.

本発明の渦巻き形状保護チューブは、開閉部領域の所要範囲によりケーブルに渦巻き形状保護チューブを装着する作業性が向上する効果がある。 The spiral protection tube of the present invention has the effect of improving the workability of attaching the spiral protection tube to the cable depending on the required range of the opening/closing area.

本発明には、前記円筒形状内側端部と前記円筒形状外側端部の最も薄い肉厚部分の厚さが、前記基部領域の最も厚い肉厚部分の厚さの１／２以下であって１／５以上である構成が含まれる。 In the present invention, the thickness of the thinnest wall portion of the cylindrical inner end and the cylindrical outer end is 1/2 or less of the thickness of the thickest wall portion of the base region, and 1/2 or less of the thickness of the thickest wall portion of the base region. /5 or more is included.

本発明の渦巻き形状保護チューブは、前記円筒形状内側端部と前記円筒形状外側端部の厚さが、前記基部領域の厚さより薄く成型されていることから、ケーブルに渦巻き形状保護チューブを装着した後に、ケーブルを屈曲させて自動車や機械などに配設しても開閉部領域が開口し電線が露出する問題が解消すると共に、開閉部領域の開閉動作が容易となる効果がある。 In the spiral protection tube of the present invention, the thickness of the cylindrical inner end and the cylindrical outer end are thinner than the thickness of the base region, so that the spiral protection tube is attached to the cable. Even if the cable is later bent and installed in an automobile, machine, etc., the problem of the opening/closing area being opened and the electric wires being exposed is solved, and the opening/closing operation of the opening/closing area is facilitated.

本発明には、上述した渦巻き形状保護チューブを成型する押し出し成型機用の金型（口金部）であって、熱可塑性樹脂を加熱し溶融された溶融材の通路となる渦巻き形状の間隙部と、前記間隙部の中心部近傍所要位置に押し出し成型機内部の溶融材の通路に向け垂設された、溶融材による押圧力を分散するための円錐ピン部が配設されている構成が含まれる。 The present invention provides a mold (mouthpiece) for an extrusion molding machine for molding the above-mentioned spiral-shaped protection tube, which includes a spiral-shaped gap section that serves as a passage for a molten material heated by heating a thermoplastic resin. , a configuration is included in which a conical pin part is disposed at a predetermined position near the center of the gap part, the conical pin part being vertically disposed toward the passage of the molten material inside the extrusion molding machine, for dispersing the pressing force of the molten material. .

本発明の押し出し成型機用の金型（口金部）は、間隙部の中心部近傍所要位置に円錐ピン部が配設されていることで、溶融材が通過する際に発生する押圧力が中心部に集中することを防止することで、金型（口金部）の中心部が変形することを防止し、金型（口金部）の耐久性を向上させる効果がある。さらに、間隙部が変形することを防止することともなり、渦巻き形状保護チューブの寸法精度も向上する効果がある。 The mold (mouthpiece) for an extrusion molding machine of the present invention has a conical pin section disposed at a predetermined position near the center of the gap, so that the pressing force generated when the molten material passes is centered. By preventing the deformation of the central part of the mold (mouthpiece), this has the effect of improving the durability of the mold (mouthpiece). Furthermore, it also prevents the gap from being deformed, and has the effect of improving the dimensional accuracy of the spiral-shaped protection tube.

本発明には、上述した渦巻き形状保護チューブをケーブルに装着するための装着治具であって、作業者が例えば２本の指などで挟持し、前記渦巻き形状保護チューブを挿入可能な内径を有する正面視において、略台形管状の挟持部と、前記挟持部の内径内側に接続部で吊設され前記渦巻き形状保護チューブを拡径し挿入する略円錐形状の挿入部と、前記挿入部に連設され前記ケーブルの電線部分を円管形状の内部に挿入固定し、前記渦巻き形状保護チューブ内側に導くケーブル導入部とを有している構成が含まれる。 The present invention provides a mounting jig for mounting the above-mentioned spiral-shaped protection tube on a cable, which has an inner diameter that allows an operator to insert the spiral-shaped protection tube by holding it between, for example, two fingers. When viewed from the front, a substantially trapezoidal tubular clamping part, a substantially conical insertion part which is suspended from a connecting part inside the clamping part and into which the spiral-shaped protection tube is expanded and inserted, and which is connected to the insertion part. The present invention includes a configuration including a cable introduction portion for inserting and fixing the electric wire portion of the cable into the inside of the circular tube shape and guiding it to the inside of the spiral protection tube.

本発明の渦巻き形状保護チューブ用の装着治具は、装着治具にケーブルを固定し、例えば片手の２本指などで挟持し、渦巻き形状保護チューブを挿入部より挿入し、渦巻き形状保護チューブの先端部をもう一方の手で引き抜くだけで、ケーブルに渦巻き形状保護チューブを装着することができるので、従来の被膜材と比べ装着作業の作業効率が向上する効果がある。 The installation jig for the spiral-shaped protection tube of the present invention is such that the cable is fixed to the installation jig, the cable is held between two fingers of one hand, and the spiral-shaped protection tube is inserted through the insertion part. The spiral-shaped protection tube can be attached to the cable simply by pulling out the tip with the other hand, which has the effect of improving the efficiency of attachment work compared to conventional coating materials.

本発明の渦巻き形状保護チューブは、ケーブルを完成した後に容易に装着でき、電線部分を屈曲させても電線が露出しづらい効果があり、さらに、渦巻き形状保護チューブをケーブルに装着するための装着治具は装着作業効率が向上し、渦巻き形状保護チューブ製造用金型（口金部）は金型の耐久性が向上する効果がある。 The spiral protection tube of the present invention can be easily installed after the cable is completed, and has the effect of making it difficult for the wire to be exposed even if the wire portion is bent. The tool improves the installation efficiency, and the spiral-shaped protective tube manufacturing mold (mouthpiece) improves the durability of the mold.

本発明に係る渦巻き形状保護チューブの使用例を示す（ａ）は斜視図であり、（ｂ）は（ａ）のｂ－ｂ断面図である。(a) is a perspective view, and (b) is a cross-sectional view taken along line bb in (a), showing an example of use of the spirally shaped protection tube according to the present invention. 渦巻き形状保護チューブの断面図で（ａ）は本発明品、（ｂ）は厚みが均一な比較例、及び（ｃ）は溶融材のショアＡ硬度が６９の場合の比較図である。In the cross-sectional views of spiral-shaped protection tubes, (a) is a product of the present invention, (b) is a comparative example with a uniform thickness, and (c) is a comparative diagram when the molten material has a Shore A hardness of 69. 本発明に係る装着治具の使用手順を示す作業工程図である。FIG. 3 is a work process chart showing a procedure for using the mounting jig according to the present invention. 渦巻き形状保護チューブを装着し、電線部分を屈曲させた状態を示す斜視図である。It is a perspective view which shows the state where the spiral-shaped protection tube was attached and the electric wire part was bent. 本発明に係る装着治具の構造を示す（ａ）は平面図、（ｂ）は背面図、（ｃ）は側面図、（ｄ）は正面図及び、（ｅ）は斜視図である。1A is a plan view, FIG. 1B is a rear view, FIG. 3C is a side view, FIG. 1D is a front view, and FIG. 本発明に係る渦巻き形状保護チューブを製造する押し出し製造装置の金型（口金部）部分を示す説明図ある。FIG. 2 is an explanatory diagram showing a mold (mouthpiece) portion of an extrusion manufacturing apparatus for manufacturing the spiral-shaped protection tube according to the present invention. 本発明に係る押し出し製造装置の金型（口金部）の構造を示す（ａ）は正面図、（ｂ）は背面図及び、（ｃ）は側面図である。1A is a front view, FIG. 1B is a rear view, and FIG. 1C is a side view, showing the structure of a mold (die portion) of an extrusion manufacturing apparatus according to the present invention.

以下、本発明の実施形態を図面を参照しながら説明する。ただし、図面は模式的に図示しており、実際の寸法や比率等とは必ずしも一致しない。また、図面相互間において、お互いの寸法の関係や比率が異なる部分が含まれることがある。尚、本実施形態において、渦巻き形状保護チューブを説明する場合には、渦巻き形状保護チューブの長さ方向に沿った向きを長さ方向、長さ方向に垂直する方向を径方向、渦巻き形状保護チューブの円周に沿った方向を周方向と言うこととする。 Embodiments of the present invention will be described below with reference to the drawings. However, the drawings are schematic illustrations and do not necessarily correspond to actual dimensions, proportions, etc. Furthermore, the drawings may include portions with different dimensional relationships and ratios. In this embodiment, when describing the spiral-shaped protection tube, the direction along the length of the spiral-shaped protection tube is referred to as the length direction, the direction perpendicular to the length direction is referred to as the radial direction, and the spiral-shaped protection tube is referred to as the radial direction. The direction along the circumference is called the circumferential direction.

また、基部領域と開閉部領域は、渦巻き形状保護チューブの周方向に連続的に形成されており、渦巻き形状保護チューブの内径面も外径面も平滑に形成されているために、基部領域と開閉部領域の境界線は明確ではない。そこで、円筒形内側端部と円筒形外側端部とが径方向に相互に重合する範囲を開閉部領域と表現し、開閉部領域以外の領域を基部領域と表現することとする。 In addition, the base region and the opening/closing region are formed continuously in the circumferential direction of the spiral-shaped protection tube, and since both the inner and outer diameter surfaces of the spiral-shaped protection tube are formed smoothly, the base region and the opening/closing region are formed continuously. The boundaries of the closure area are not clearly defined. Therefore, the area where the cylindrical inner end and the cylindrical outer end overlap each other in the radial direction will be expressed as the opening/closing region, and the area other than the opening/closing region will be referred to as the base region.

さらに、本実施形態において渦巻き形状保護チューブの断面図は、その構成を説明するために、円筒形内側端部と円筒形外側端部とが接触しない状態で図示されているが、通常外力を加えない状態では円筒形内側端部の外側面と、円筒形外側端部の内側面はお互いに当接した状態となり、開閉部領域は閉じた状態となる。 Furthermore, in the present embodiment, the sectional view of the spirally shaped protection tube is shown in a state where the cylindrical inner end and the cylindrical outer end are not in contact in order to explain the structure, but normally an external force is applied In the closed state, the outer surface of the cylindrical inner end and the inner surface of the cylindrical outer end are in contact with each other, and the opening/closing region is in a closed state.

図１及び図６に示されるように、本実施形態の渦巻き形状保護チューブ１は、電線束やケーブル５０を保護、絶縁するための被覆材であって、熱可塑性樹脂１００を加熱溶融して押し出し成型機２００で、ｂ－ｂ断面視において略円筒形の渦巻き形状に成型されている。 As shown in FIGS. 1 and 6, the spiral-shaped protection tube 1 of this embodiment is a covering material for protecting and insulating a wire bundle or cable 50, and is made by extruding thermoplastic resin 100 by heating and melting it. The molding machine 200 molds it into a substantially cylindrical spiral shape when viewed from the bb cross section.

また、図１及び図４に示されるように、本実施形態の渦巻き形状保護チューブ１は、渦巻き形状保護チューブ１の長さ方向に沿った向き全域に亘って配設された電線束やケーブル５０に装着するための開閉部領域２と、渦巻き形状保護チューブ１の長さ方向に沿った向き全域に亘って配設され渦巻き形状保護チューブ１の所要強度を維持するための基部領域１１とを有し、開閉部領域２は円筒形内側端部１３と円筒形外側端部１２とが径方向に相互に重合し開閉自在に成型されている。 Further, as shown in FIGS. 1 and 4, the spiral protection tube 1 of this embodiment has a wire bundle or cable 50 disposed over the entire length of the spiral protection tube 1. It has an opening/closing region 2 for attaching to the spiral-shaped protection tube 1, and a base region 11 disposed over the entire length of the spiral-shaped protection tube 1 to maintain the required strength of the spiral-shaped protection tube 1. However, the opening/closing region 2 is formed such that a cylindrical inner end 13 and a cylindrical outer end 12 overlap each other in the radial direction and can be opened and closed.

以下、本発明の実施例について説明するが、本発明は、以下の実施例に限定されるものではなく、発明の要旨の範囲内で適宜変更して実施できる。 Examples of the present invention will be described below, but the present invention is not limited to the following examples, and can be implemented with appropriate modifications within the scope of the gist of the invention.

図２（ａ）及び、図４（ａ）に示されるように、実施例１の渦巻き形状保護チューブ１を、以下の条件で形成してその効果を確認した。
まず、材料は軟質ポリ塩化ビニル樹脂PVCのシヨアＡ硬度が８０のものを使用して、成型する渦巻き形状保護チューブ１の大きさは、略円筒形状内径φを５ｍｍとし、基部領域１１のもっとも暑い部分の厚さＴ０を０．６８ｍｍ、円筒形状内側端部１３と円筒形状外側端部１２のもっとも薄い部分の厚さＴ１，Ｔ２を０．３ｍｍ、開閉部領域２が、開閉部領域２と基部領域１１とを加えた周方向の1周の長さに対して、１／２となるように形成した。その後、本実施例にかかる渦巻き形状保護チューブ１をケーブル５０に装着し、電線部分を屈曲させても電線５１が露出しづらい効果と共に、装着作業も容易に行えることを確認した。 As shown in FIG. 2(a) and FIG. 4(a), the spiral-shaped protective tube 1 of Example 1 was formed under the following conditions, and its effects were confirmed.
First, the material used is soft polyvinyl chloride resin PVC with Shore A hardness of 80, and the size of the spiral-shaped protection tube 1 to be molded is approximately cylindrical with an inner diameter φ of 5 mm, and the hottest part of the base region 11 The thickness T0 of the part is 0.68 mm, the thicknesses T1 and T2 of the thinnest parts of the cylindrical inner end 13 and the cylindrical outer end 12 are 0.3 mm, and the opening/closing region 2 is different from the opening/closing region 2 and the base. It was formed to be 1/2 of the length of one round in the circumferential direction including the area 11. Thereafter, the spiral-shaped protection tube 1 according to the present example was attached to the cable 50, and it was confirmed that the electric wire 51 is not easily exposed even when the electric wire portion is bent, and that the attachment work can be easily performed.

これに対して、図２（ｂ）及び、図４（ｂ）に示される比較例１は、材料を上述した実施例１と同様の軟質ポリ塩化ビニル樹脂PVCのシヨアＡ硬度が８０のものを使用して、成型する比較例渦巻き形状保護チューブ３０の大きさである略円筒形状内径φは５ｍｍとし、開閉部領域２の範囲も周方向の1周の長さに対して１／２として上述した実施例１と同様の条件とし、厚さT３だけは実施例１と相違する全域を０．６８ｍｍとなるように形成した。その後、比較例渦巻き形状保護チューブ３０をケーブル５０に装着し電線部分を屈曲させると開閉部領域２の一部部分で開口部位Ａが確認され電線５１は露出した。さらに、装着作業で比較例渦巻き形状保護チューブ３０を一度拡径して開閉領域２を押し広げると、元の閉じた状態に復元しにくい問題点も確認された。 On the other hand, in Comparative Example 1 shown in FIG. 2(b) and FIG. 4(b), the material was made of the same soft polyvinyl chloride resin PVC as in Example 1 and had a shore A hardness of 80. The approximately cylindrical inner diameter φ, which is the size of the comparative example spiral-shaped protection tube 30 to be molded using the above-mentioned method, is 5 mm, and the range of the opening/closing region 2 is also set to 1/2 of the length of one circumference in the circumferential direction. The conditions were the same as in Example 1, except for the thickness T3, which was formed so that the entire area was 0.68 mm. Thereafter, when the spiral protection tube 30 of the comparative example was attached to the cable 50 and the electric wire portion was bent, an opening portion A was confirmed in a part of the opening/closing region 2 and the electric wire 51 was exposed. Furthermore, it was also confirmed that once the diameter of the spiral protection tube 30 of the comparative example was expanded and the opening/closing area 2 was expanded during the installation process, it was difficult to restore the tube to its original closed state.

さらに、図２（ｃ）に示される比較例２渦巻き形状保護チューブ４０は、材料を軟質ポリ塩化ビニル樹脂PVCのシヨアＡ硬度が６９のものを使用して、上述した実施例１と同じ寸法の金型（口金部）３００を使用して成型した。しかし、押し出し成型中に成型速度にばらつき（蛇動）が生じ、成型精度が安定せず、円筒形状内側端部１３と円筒形状外側端部１２などが設定寸法に成型することが困難であることが確認された。 Furthermore, the spiral-shaped protection tube 40 of Comparative Example 2 shown in FIG. It was molded using a mold (mouthpiece) 300. However, variations in molding speed (snaking) occur during extrusion molding, making the molding accuracy unstable, making it difficult to mold the cylindrical inner end 13 and the cylindrical outer end 12 to the set dimensions. was confirmed.

開閉部領域２は、熱可塑性樹脂１００が変形することで開閉自在とすることができるが、上述した実施例のように、使用する熱可塑性樹脂１００の種類や硬度、成型する渦巻き形状保護チューブ１の径方向の大きさなどにより、開閉部領域２や各部の厚さＴ０，Ｔ１，Ｔ２などを適宜設定可能である。 The opening/closing region 2 can be opened and closed by deforming the thermoplastic resin 100, but as in the above embodiment, the type and hardness of the thermoplastic resin 100 used, the spiral-shaped protective tube 1 to be molded, etc. The thicknesses T0, T1, T2, etc. of the opening/closing section region 2 and each section can be set as appropriate depending on the radial size of the opening/closing section 2, and the thicknesses T0, T1, T2, etc. of each section.

本実施形態では、軟質ポリ塩化ビニル樹脂PVCを使用することとし、そのシヨアＡ硬度が７５以上９０以下の材料を使用すればよい。 In this embodiment, a soft polyvinyl chloride resin PVC is used, and a material having a Shore A hardness of 75 or more and 90 or less may be used.

また、円筒形状内側端部１３と円筒形状外側端部１２の重合する部分の範囲である開閉部領域２が、開閉部領域２と基部領域１１とを加えた周方向の1周の長さに対して、１／４以上であって３／４以下であればよい。ここで、開閉部領域２と基部領域１１とを加えた周方向の1周の長さとは、円筒形内側端部１３の先端から円筒形外側端部１２の先端までの渦巻き形状の周方向全域を指すものではなく、略円筒形状の外周部分の１周を指すものとする。 In addition, the opening/closing region 2, which is the overlapped portion of the cylindrical inner end 13 and the cylindrical outer end 12, is equal to the length of one circumference in the circumferential direction, which is the sum of the opening/closing region 2 and the base region 11. On the other hand, it is sufficient if it is 1/4 or more and 3/4 or less. Here, the length of one circumference in the circumferential direction including the opening/closing region 2 and the base region 11 is the entire circumferential area of the spiral shape from the tip of the cylindrical inner end 13 to the tip of the cylindrical outer end 12. It does not refer to , but refers to one circumference of the approximately cylindrical outer circumferential portion.

本実施形態における渦巻き形状保護チューブ１の厚さは、円筒形状内側端部１３と円筒形状外側端部１２のもっとも薄い部分の厚さＴ１，Ｔ２が、基部領域１１のもっとも厚い部分の厚さＴ０に比べ薄く成型されている。このＴ１及びＴ２の厚さは、Ｔ０の厚さの１／２以下１／５以上で形成すればよい。 The thickness of the spiral protection tube 1 in this embodiment is such that the thicknesses T1 and T2 at the thinnest parts of the cylindrical inner end 13 and the cylindrical outer end 12 are the thickness T0 of the thickest part of the base region 11. It is molded thinner than the . The thickness of T1 and T2 may be 1/2 or more and 1/5 or more of the thickness of T0.

図６及び図７に示されるように、本実施形態の渦巻き形状保護チューブ１を成型する押し出し成型機２００に使用する金型（口金部）３００は、熱可塑性樹脂１００を加熱し溶融された溶融材の通路となる渦巻き形状の間隙部３０３と、間隙部３０３の中心部近傍所要位置に押し出し成型機２００の内部方向の溶融材の通路に向け垂設された、溶融材による押圧力を分散するための円錐ピン部３０４が配設されている。 As shown in FIGS. 6 and 7, a mold (mouthpiece) 300 used in an extrusion molding machine 200 for molding the spiral-shaped protection tube 1 of this embodiment is used to heat and melt a thermoplastic resin 100. A spiral gap 303 serving as a passage for the material and a vertically installed molten material at a predetermined position near the center of the gap 303 toward the inside of the extrusion molding machine 200 to disperse the pressing force of the molten material. A conical pin portion 304 is provided for this purpose.

図７（ａ）に示されるように、略円板形状の金型（口金部）３００の正面側は、円板形状の中心部近傍に間隙部３０３が形成され、外縁部近傍所要位置に押し出し成型機２００に固定するための取付け孔３０２が複数個配設され、間隙部３０３の中心部近傍所要位置に円錐ピン部３０４がピン固定ボルト３０１で固定されている。さらに、図７（ｂ）に示されるように、金型（口金部）３００の背面側は、間隙部３０３の縁部全域に亘り溶融材を導き易くするためのテーパー部３０５が形成されている。 As shown in FIG. 7(a), a gap 303 is formed near the center of the disk shape on the front side of the approximately disk-shaped mold (die portion) 300, and the die is extruded to a desired position near the outer edge. A plurality of attachment holes 302 for fixing to the molding machine 200 are provided, and a conical pin portion 304 is fixed at a predetermined position near the center of the gap 303 with a pin fixing bolt 301. Furthermore, as shown in FIG. 7(b), a tapered part 305 is formed on the back side of the mold (mouth part) 300 to facilitate guiding of the molten material over the entire edge of the gap part 303. .

図５に示されるように、本実施形態の装着治具６０は、作業者が例えば２本の指などで挟持し装着作業をする挟持部６１と、挟持部６１の内径側に接続部６６で吊設され、渦巻き形状保護チューブ１を拡径し開閉部領域２を押し広げ挿入する略円錐形状の挿入部６２と、挿入部６２に連設されケーブル５０の電線５１を円管形状の内部に導入するケーブル導入部６４とで形成されている。 As shown in FIG. 5, the mounting jig 60 of the present embodiment includes a clamping part 61 that the operator uses, for example, with two fingers to perform the mounting operation, and a connecting part 66 on the inner diameter side of the clamping part 61. A substantially conical insertion part 62 is suspended and inserted into the spiral protection tube 1 to expand the opening/closing area 2 by expanding the diameter thereof, and the insertion part 62 is connected to the insertion part 62 and inserts the electric wire 51 of the cable 50 into the inside of the circular tube shape. It is formed by a cable introduction part 64 to be introduced.

挟持部６１は、図５（ｄ）に示されるように、正面視において略台形の外縁で内径側に渦巻き形状保護チューブ１を挿入可能な間隙を有する略管状に形成され、頂点分部にケーブル５０を逃がすための窪み部６５が配設されている。 As shown in FIG. 5(d), the holding part 61 is formed into a substantially tubular shape having a substantially trapezoidal outer edge when viewed from the front with a gap on the inner diameter side into which the spirally shaped protection tube 1 can be inserted, and a cable is attached to the apex part. A recessed portion 65 is provided for allowing the material 50 to escape.

ケーブル導入部６４は、円管形状の側面に不定形に刻設され電線５１を円管形状の内部に挿入可能となる挿入溝６７と、電線５１を保持固定すると共に、渦巻き形状保護チューブ１が復元して縮径することを防止しながら導く円管形状の爪部６３とで形成されている。 The cable introduction part 64 has an insertion groove 67 that is carved in an irregular shape on the side surface of the circular tube shape and allows the electric wire 51 to be inserted into the inside of the circular tube shape. It is formed with a circular tube-shaped claw portion 63 that guides the guide while preventing it from restoring and contracting in diameter.

装着治具６０の素材としては、プラスチックなどの樹脂組成物やアルミニウム合金などを使用すればよく、その場合の製造方法としては、樹脂組成物やアルミニウム合金などを切削加工にて成形すればよい。 As the material for the mounting jig 60, a resin composition such as plastic, an aluminum alloy, or the like may be used, and the manufacturing method in this case may be to form the resin composition, aluminum alloy, or the like by cutting.

次に、渦巻き形状保護チューブ１をケーブル５０に装着する手順を、図３を使って説明する。
図３（ａ）及び（ｂ）に示すように、電線５１を挿入溝６７からケーブル導入部６４の内側に挿入する。次に図３（ｃ）に示すように渦巻き形状保護チューブ１を挿入部６２側から挿入する。尚、挿入時に開閉部領域２を接続部６６側に合わせて挿入すると、渦巻き形状保護チューブ１は挿入部６２で拡径し開閉部領域２が押し広げられ、渦巻き形状保護チューブ１の先端部をケーブル導入部６４側から引き抜くと、図３（ｄ）に示すように、渦巻き形状保護チューブ１がケーブル５０に装着された状態となる。 Next, the procedure for attaching the spiral protection tube 1 to the cable 50 will be explained using FIG. 3.
As shown in FIGS. 3A and 3B, the electric wire 51 is inserted into the cable introduction part 64 from the insertion groove 67. Next, as shown in FIG. 3(c), the spiral protection tube 1 is inserted from the insertion portion 62 side. If the opening/closing part area 2 is aligned with the connecting part 66 side during insertion, the diameter of the spiral protection tube 1 will expand at the insertion part 62 and the opening/closing area 2 will be pushed out, causing the tip of the spiral protection tube 1 to expand. When pulled out from the cable introduction part 64 side, the spirally shaped protective tube 1 is attached to the cable 50, as shown in FIG. 3(d).

上記の通り、本実施形態の渦巻き形状保護チューブは、電線にコネクターを両端に取り付けてケーブルを完成した後でも容易に装着でき、電線部分を屈曲させても電線が露出しづらい効果がある。また、渦巻き形状保護チューブをケーブルに装着するための装着治具は装着作業効率が向上し、渦巻き形状保護チューブ製造用の金型（口金部）は溶融材による押圧力を分散するための円錐ピン部を有することで金型（口金部）の耐久性が向上すると共に、溶融材による押圧力によって金型（口金部）が変形し間隙部が広がることを防止する効果もある。 As mentioned above, the spiral-shaped protection tube of this embodiment can be easily attached even after the cable is completed by attaching connectors to both ends of the electric wire, and has the effect that the electric wire is difficult to expose even if the electric wire portion is bent. In addition, the installation jig for attaching the spiral protection tube to the cable improves installation work efficiency, and the mold (mouthpiece) for manufacturing the spiral protection tube has conical pins to disperse the pressing force of the molten material. Having this part improves the durability of the mold (mouthpiece), and also has the effect of preventing the mold (mouthpiece) from being deformed and the gap from widening due to the pressing force of the molten material.

以上のように、本発明を実施するための最良の構成、方法等は、前記記載で開示されているが、本発明は、これに限定されるものではない。
例えば、前記実施形態では、装着治具は、プラスチックなどの樹脂組成物やアルミニウム合金などで形成したが、これは材料を限定するものではなく、ステンレス、炭素鋼、または、エンジニアリングプラスチックなどの合成樹脂を材料としても良い。 As mentioned above, although the best configuration, method, etc. for carrying out the present invention are disclosed in the above description, the present invention is not limited thereto.
For example, in the embodiment described above, the mounting jig is made of a resin composition such as plastic, an aluminum alloy, etc., but this is not intended to limit the material; it may be made of stainless steel, carbon steel, or synthetic resin such as engineering plastic. may be used as a material.

１ 渦巻き形状保護チューブ
２ 開閉部領域
１１ 基部領域
１２ 円筒形外側端部
１３ 円筒形内側端部
３０ 比較例渦巻き形状保護チューブ
４０ 比較例２渦巻き形状保護チューブ
５０ ケーブル
５１ 電線
５２ コネクター
６０ 装着治具
６１ 挟持部
６２ 挿入部
６３ 爪部
６４ ケーブル導入部
６５ 窪み部
６６ 接続部
６７ 挿入溝
１００ 熱可塑性樹脂
２００ 押し出し成型機
３００ 金型（口金部）
３０１ ピン固定ボルト
３０２ 取付け孔
３０３ 間隙部
３０４ 円錐ピン部
３０５ テーパー部
Ｔ０ 基部領域１１のもっとも厚い部分の厚さ
Ｔ１ 円筒形状内側端部１３のもっとも薄い部分の厚さ
Ｔ２ 円筒形状外側端部１２のもっとも薄い部分の厚さ
Ｔ３ 比較例１の厚さ
φ 略円筒形状内径
Ａ 開口部位 1 Spiral-shaped protection tube 2 Opening/closing region 11 Base region 12 Cylindrical outer end 13 Cylindrical inner end 30 Comparative example spiral-shaped protection tube 40 Comparative example 2 spiral-shaped protection tube 50 Cable 51 Electric wire 52 Connector 60 Installation jig 61 Clamping part 62 Insertion part 63 Claw part 64 Cable introduction part 65 Recess part 66 Connection part 67 Insertion groove 100 Thermoplastic resin 200 Extrusion molding machine 300 Mold (mouth part)
301 Pin fixing bolt 302 Mounting hole 303 Gap portion 304 Conical pin portion 305 Tapered portion T0 Thickness of the thickest part of the base region 11 T1 Thickness of the thinnest part of the cylindrical inner end 13 T2 Thickness of the cylindrical outer end 12 Thickness of the thinnest part T3 Thickness of comparative example 1 φ Approximately cylindrical inner diameter A Opening part

本発明は、上記目的を達成するために案出されたものである。詳述するならば、軟質ポリ塩化ビニル樹脂ＰＶＣを加熱溶融し、押し出し成型機で略円筒形状に成型された、電線束やケーブルを保護、絶縁するための渦巻き形状保護チューブであって、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設された電線束やケーブルに装着するための開閉部領域と、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設され前記渦巻き形状保護チューブの所要強度を維持するための基部領域とを有し、前記開閉部領域は円筒形状内側端部と円筒形状外側端部とが径方向に相互に重合され、さらに電線束やケーブルを装着する作業性向上と電線束やケーブルを装着後に車両や機械内に配置する這いまわしが容易となるように前記渦巻き形状の内側面及び外側面のいずれもが平滑な表面に形成され、前記基部領域は前記円筒形状内側端部と前記円筒形状外側端部の周方向の間に連設されており、前記円筒形状内側端部と前記円筒形状外側端部の厚さが前記基部領域の厚さに比べ薄く成型され、前記保護チューブの長さ方向と垂直方向となる向きからの断面視において、渦巻き形状となる構成からなる。
The present invention has been devised to achieve the above object. To be more specific, it is a spiral-shaped protection tube for protecting and insulating electric wire bundles and cables, which is made by heating and melting a soft polyvinyl chloride resin PVC and molding it into a substantially cylindrical shape using an extrusion molding machine. An opening/closing area for attaching to a wire bundle or cable arranged over the entire longitudinal direction of the shape protection tube, and an opening/closing area for attaching to the wire bundle or cable arranged throughout the length direction of the spiral shaped protection tube. a base region disposed to maintain the required strength of the spirally shaped protective tube, the closure region having a cylindrical inner end and a cylindrical outer end radially overlapping each other ; Both the inner and outer surfaces of the spiral shape are made of smooth surfaces to improve the workability of installing wire bundles and cables and to make it easier to move the wire bundles and cables around in vehicles and machines after installing them. the base region is connected between the cylindrical inner end and the cylindrical outer end in the circumferential direction, and the thickness of the cylindrical inner end and the cylindrical outer end is equal to It is formed thinner than the thickness of the base region, and has a spiral shape when viewed in cross section from a direction perpendicular to the length direction of the protective tube.

本発明には、軟質ポリ塩化ビニル樹脂ＰＶＣのシヨアＡ硬度が７５以上９０以下である構成が含まれる。
The present invention includes a structure in which the Shore A hardness of the flexible polyvinyl chloride resin PVC is 75 or more and 90 or less.

本発明には、上述した渦巻き形状保護チューブを成型する押し出し成型機用の金型（口金部）であって、軟質ポリ塩化ビニル樹脂ＰＶＣを加熱し溶融された溶融材の通路となる渦巻き形状の間隙部と、前記間隙部の中心部近傍所要位置に押し出し成型機内部の溶融材の通路に向け垂設された、溶融材による押圧力を分散するための円錐ピン部が配設されている構成が含まれる。
The present invention includes a mold (mouthpiece) for an extrusion molding machine for molding the above-mentioned spiral-shaped protection tube, which has a spiral shape that serves as a passage for the molten material heated by heating the soft polyvinyl chloride resin PVC. A configuration in which a gap portion and a conical pin portion for dispersing the pressing force of the molten material are provided at a predetermined position near the center of the gap portion and are vertically disposed toward the passage of the molten material inside the extrusion molding machine. is included.

Claims (6)

熱可塑性樹脂が略円筒形状に成型された、電線束やケーブル用の渦巻き形状保護チューブであって、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設された電線束やケーブルを装着するための開閉部領域と、前記渦巻き形状保護チューブの長さ方向に沿った向き全域に亘って配設され前記渦巻き形状保護チューブの所要強度を維持するための基部領域とを有し、前記開閉部領域は円筒形状内側端部と円筒形状外側端部とが径方向に相互に重合され開閉自在となる形状であり、前記基部領域は前記円筒形状内側端部と前記円筒形状外側端部の周方向の間に連設されており、前記円筒形状内側端部と前記円筒形状外側端部の厚さが前記基部領域の厚さに比べ薄く成型されいることを特徴とする渦巻き形状保護チューブ。 A spiral-shaped protective tube for electric wire bundles and cables in which a thermoplastic resin is molded into a substantially cylindrical shape, and the electric wire bundle or cable is arranged over the entire longitudinal direction of the spiral-shaped protective tube. It has an opening/closing area for attaching a cable, and a base area disposed over the entire length of the spiral protection tube to maintain the required strength of the spiral protection tube. , the opening/closing region has a shape in which a cylindrical inner end and a cylindrical outer end overlap each other in the radial direction so that it can be opened and closed freely, and the base region has a cylindrical inner end and a cylindrical outer end. The spiral-shaped protection is continuous between the parts in the circumferential direction, and the thickness of the cylindrical inner end part and the cylindrical outer end part is formed thinner than the thickness of the base area. tube. 前記熱可塑性樹脂がポリ塩化ビニル樹脂PVCからなり、そのシヨアＡ硬度が７５以上９０以下であることを特徴とする請求項１に記載の渦巻き形状保護チューブ。 2. The spiral-shaped protective tube according to claim 1, wherein the thermoplastic resin is made of polyvinyl chloride resin PVC and has a Shore A hardness of 75 or more and 90 or less. 前記円筒形状内側端部と前記円筒形状外側端部の重合する部分の範囲が周方向の全周に対して１／４以上３／４以下であることを特徴とする請求項１乃至請求項２のいずれか１項に記載の渦巻き形状保護チューブ。 Claims 1 to 2, wherein the range of the overlapping portion of the cylindrical inner end and the cylindrical outer end is 1/4 or more and 3/4 or less of the entire circumference in the circumferential direction. The spirally shaped protective tube according to any one of the above. 前記円筒形状内側端部と前記円筒形状外側端部の最小厚さが、前記基部領域の最大厚さの１／２以下１／５以上であることを特徴とする請求項１乃至請求項３のいずれか１項に記載の渦巻き形状保護チューブ。 Claims 1 to 3, wherein the minimum thickness of the cylindrical inner end and the cylindrical outer end is 1/2 or more and 1/5 or more of the maximum thickness of the base region. The spiral-shaped protective tube according to any one of the items. 請求項１乃至請求項４のいずれか１項に記載の渦巻き形状保護チューブを成型する押し出し成型機用の金型であって、熱可塑性樹脂を加熱し溶融された溶融材の通路となる渦巻き形状の間隙部と、前記間隙部の中心部近傍所要位置に押し出し成型機内部に向け垂設された溶融材による押圧力を分散するための円錐ピン部が配設されていることを特徴とする押し出し成型機用金型。 A mold for an extrusion molding machine for molding the spiral-shaped protection tube according to any one of claims 1 to 4, the spiral shape serving as a passage for a molten material heated and melted by a thermoplastic resin. An extrusion device characterized in that a gap portion and a conical pin portion for dispersing the pressing force of the molten material vertically placed toward the inside of the extrusion molding machine are disposed at a predetermined position near the center of the gap portion. Mold for molding machine. 請求項１乃至請求項４のいずれか１項に記載の渦巻き形状保護チューブをケーブルに装着するための装着治具であって、作業者が挟持し前記渦巻き形状保護チューブを挿入可能な内径を有する略管状の挟持部と、前記挟持部の径方向内側に吊設され前記渦巻き形状保護チューブを拡径し挿入する略円錐形状の挿入部と、前記挿入部に連設され前記ケーブルの電線部分を挿入固定し前記渦巻き形状保護チューブ内側に導くケーブル導入部とを有していることを特徴とする渦巻き形状保護チューブ装着治具。 A mounting jig for mounting the spiral-shaped protection tube according to any one of claims 1 to 4 on a cable, the mounting jig having an inner diameter that allows an operator to hold and insert the spiral-shaped protection tube. a substantially tubular holding part; a substantially conical insertion part suspended radially inside the holding part for expanding and inserting the spiral protection tube; and a substantially conical insertion part connected to the insertion part for inserting the electric wire portion of the cable. 1. A spiral protection tube mounting jig, characterized in that it has a cable introduction part that is inserted and fixed and guided inside the spiral protection tube.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5585819U (en) * 1978-12-12 1980-06-13
JPH10210627A (en) * 1997-01-21 1998-08-07 Sumitomo Wiring Syst Ltd Cable sheath material
JP2003532357A (en) * 2000-04-24 2003-10-28 タイコ・エレクトロニクス・コーポレイション Wrap-around cable sleeve having inflatable body and method for manufacturing the same
JP3194639U (en) * 2014-09-19 2014-12-04 株式会社Ｓｋｙ Slit tube
JP2015220807A (en) * 2014-05-15 2015-12-07 株式会社オートネットワーク技術研究所 Corrugate tube and wire harness
JP2018059611A (en) * 2016-10-07 2018-04-12 住友電装株式会社 Corrugated tube
JP2018152983A (en) * 2017-03-13 2018-09-27 デンカ株式会社 Protective tube, protective material and wire harness

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5585819U (en) * 1978-12-12 1980-06-13
JPH10210627A (en) * 1997-01-21 1998-08-07 Sumitomo Wiring Syst Ltd Cable sheath material
JP2003532357A (en) * 2000-04-24 2003-10-28 タイコ・エレクトロニクス・コーポレイション Wrap-around cable sleeve having inflatable body and method for manufacturing the same
JP2015220807A (en) * 2014-05-15 2015-12-07 株式会社オートネットワーク技術研究所 Corrugate tube and wire harness
JP3194639U (en) * 2014-09-19 2014-12-04 株式会社Ｓｋｙ Slit tube
JP2018059611A (en) * 2016-10-07 2018-04-12 住友電装株式会社 Corrugated tube
JP2018152983A (en) * 2017-03-13 2018-09-27 デンカ株式会社 Protective tube, protective material and wire harness

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