JP6968687B2

JP6968687B2 - Corrugated tube

Info

Publication number: JP6968687B2
Application number: JP2017248792A
Authority: JP
Inventors: 勇介町田
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2017-12-26
Filing date: 2017-12-26
Publication date: 2021-11-17
Anticipated expiration: 2037-12-26
Also published as: JP2019115229A

Description

本発明は、コルゲートチューブに関する。 The present invention relates to a corrugated tube.

従来、自動車等に搭載される電線を外部から保護する部材としてコルゲートチューブが使用されている。 Conventionally, a corrugated tube has been used as a member for protecting an electric wire mounted on an automobile or the like from the outside.

従来のコルゲートチューブは、コルゲートチューブの軸方向に１本のスリットが形成されており、スリットを介して電線をコルゲートチューブの内部に挿入することで、電線を収容する。これにより、コルゲートチューブは、電線を保護している。また、従来のコルゲートチューブは、電線をコルゲートチューブの内部に挿入した後に、コルゲートチューブの両端部を互いに重ねることで、両端部をラップし、スリットを閉じることで、車両に対して組み付ける組付作業時、梱包時、搬送時などにおける曲げに対して、ラップが解除され、スリットが開くことによる電線の露出を抑制するものがある。 In the conventional corrugated tube, one slit is formed in the axial direction of the corrugated tube, and the electric wire is accommodated by inserting the electric wire into the corrugated tube through the slit. Thereby, the corrugated tube protects the electric wire. In addition, in the conventional corrugated tube, after inserting the electric wire inside the corrugated tube, both ends of the corrugated tube are overlapped with each other to wrap both ends and the slit is closed to assemble the corrugated tube to the vehicle. There is a device that suppresses the exposure of the electric wire due to the opening of the slit by releasing the wrap against bending during bending, packing, and transportation.

特表２００９−５４２１８０号公報Special Table 2009-542180 Gazette

しかしながら、上記従来のコルゲートチューブでは、組付作業時や、梱包時、搬送時などにおいて、コルゲートチューブが曲がりながら、さらにコルゲートチューブの周方向にねじれるように回転されると、ラップしている部分が周方向における横ずれをすることでラップが解除され、電線が露出するため、改善の余地がある。 However, in the above-mentioned conventional corrugated tube, when the corrugated tube is bent and further twisted in the circumferential direction during assembly work, packing, transportation, etc., the wrapped portion is formed. There is room for improvement because the lap is released by lateral displacement in the circumferential direction and the electric wire is exposed.

本発明は、上記に鑑みてなされたものであって、曲げ又はねじれ等の変形に対してラップが解除されることによる電線の露出を抑制することができるコルゲートチューブを提供することを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to provide a corrugated tube capable of suppressing exposure of an electric wire due to unwrapping due to deformation such as bending or twisting. ..

上記目的を達成する為、本発明のコルゲートチューブは、コルゲートチューブの軸方向から見た場合において湾曲して形成される本体部と、前記本体部の湾曲する方向のうち一端に形成される被ロック部と、前記本体部の湾曲する方向のうち他端に形成され、前記被ロック部に係止されるロック部と、前記被ロック部または前記ロック部を挟んで、前記本体部側と反対側に形成されるベロ部と、を備え、前記本体部を閉じた状態において、前記ロック部は、前記被ロック部を係止するとともに、前記ベロ部は、前記本体部と重なり、前記ロック部および前記被ロック部は、前記軸方向から見た場合において、前記本体部の外周面の一部を形成する頂面と、前記頂面の延在方向において対向し、前記頂面の両端部から形成される一対の側面と、を備え、前記ロック部の一対の前記側面のうち、前記本体部側と反対側の側面は、前記頂面と直交する直交面であり、前記本体部側の側面は、前記頂面と直交する方向と交差し、かつ前記本体部側に向かって傾斜する傾斜面であり、前記被ロック部の一対の前記側面のうち、前記本体部側の側面は、前記頂面と直交する直交面であり、前記本体部側と反対側の側面は、前記頂面と直交する方向と交差し、かつ前記ロック部の傾斜面と同一方向に傾斜する傾斜面である、ことを特徴としている。 In order to achieve the above object, the corrugated tube of the present invention is locked at one end of the main body portion formed to be curved when viewed from the axial direction of the corrugated tube and the curved direction of the main body portion. A lock portion formed at the other end of the curved direction of the main body portion and the locked portion and locked to the locked portion, and the locked portion or the locked portion sandwiching the locked portion and the opposite side to the main body portion side. and a tongue portion formed on, in the closed state of the said body portion, said locking portion, the addition to locking the locked portion, the tongue portion, Ri and Do heavy said body portion, said locking When viewed from the axial direction, the portion and the locked portion face the top surface forming a part of the outer peripheral surface of the main body portion in the extending direction of the top surface, and both ends of the top surface. A pair of side surfaces formed from the above, and of the pair of the side surfaces of the lock portion, the side surface opposite to the main body portion side is an orthogonal surface orthogonal to the top surface, and is on the main body portion side. The side surface is an inclined surface that intersects the direction orthogonal to the top surface and is inclined toward the main body portion side, and among the pair of the side surfaces of the locked portion, the side surface on the main body portion side is the said. It is an orthogonal surface orthogonal to the top surface, and the side surface opposite to the main body portion side is an inclined surface that intersects the direction orthogonal to the top surface and is inclined in the same direction as the inclined surface of the lock portion. It is characterized by that.

ここで、前記本体部は、円弧形状の第１部材と、円弧形状の第２部材と、前記第１部材と前記第２部材との間に形成される許容部と、を備え、前記第１部材は、前記許容部側と反対側に前記被ロック部が形成され、前記第２部材は、前記許容部側と反対側に前記ロック部が形成され、前記許容部は、前記軸方向から見た場合において、前記被ロック部と前記ロック部を近づけるように、支点として前記第１部材および前記第２部材を回転することを許容する、ことが望ましい。 Here, the main body portion includes a first member having an arc shape, a second member having an arc shape, and a permissible portion formed between the first member and the second member, and the first member. The member has the locked portion formed on the side opposite to the allowable portion side, the second member has the locked portion formed on the side opposite to the allowable portion side, and the allowable portion is viewed from the axial direction. In such a case, it is desirable to allow the first member and the second member to rotate as fulcrums so that the locked portion and the locked portion are brought close to each other.

本発明に係るコルゲートチューブは、曲げ又はねじれ等の変形に対してラップが解除されることによる電線の露出を抑制することができる。 The corrugated tube according to the present invention can suppress the exposure of the electric wire due to the unwrapping due to the deformation such as bending or twisting.

図１は、実施形態におけるコルゲートチューブの斜視図である。FIG. 1 is a perspective view of a corrugated tube according to an embodiment. 図２は、図１のＡ１−Ａ１の断面図である。FIG. 2 is a cross-sectional view taken along the line A1-A1 of FIG. 図３は、実施形態における電線の組付前状態を示すコルゲートチューブの斜視図である。FIG. 3 is a perspective view of a corrugated tube showing a state before assembling the electric wire in the embodiment. 図４は、実施形態における電線の組付前状態を示すコルゲートチューブの断面図である。FIG. 4 is a cross-sectional view of a corrugated tube showing a state before assembling the electric wire in the embodiment. 図５は、実施形態における電線の組付後状態を示すコルゲートチューブの断面図である。FIG. 5 is a cross-sectional view of a corrugated tube showing a state after assembling the electric wire in the embodiment. 図６は、変形例における電線の組付後状態を示すコルゲートチューブの断面図である。FIG. 6 is a cross-sectional view of a corrugated tube showing a state after assembly of an electric wire in a modified example.

以下に、本発明における実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

［実施形態］
まず、実施形態におけるコルゲートチューブについて説明する。図１は、実施形態におけるコルゲートチューブの斜視図である。図２は、図１のＡ１−Ａ１の断面図である。図３は、実施形態における電線の組付前状態を示すコルゲートチューブの斜視図である。図４は、実施形態における電線の組付前状態を示すコルゲートチューブの断面図である。図５は、実施形態における電線の組付後状態を示すコルゲートチューブの断面図である。ここで、図３および図４の電線の組付前状態のＸ方向は、実施形態におけるコルゲートチューブの幅方向であり、Ｘ１方向は右方向であり、Ｘ２方向は左方向である。各図のＹ方向は、実施形態におけるコルゲートチューブの軸方向であり、幅方向と直交する方向である。 [Embodiment]
First, the corrugated tube in the embodiment will be described. FIG. 1 is a perspective view of a corrugated tube according to an embodiment. FIG. 2 is a cross-sectional view taken along the line A1-A1 of FIG. FIG. 3 is a perspective view of a corrugated tube showing a state before assembling the electric wire in the embodiment. FIG. 4 is a cross-sectional view of a corrugated tube showing a state before assembling the electric wire in the embodiment. FIG. 5 is a cross-sectional view of a corrugated tube showing a state after assembling the electric wire in the embodiment. Here, the X direction of the electric wires in FIGS. 3 and 4 before assembly is the width direction of the corrugated tube in the embodiment, the X1 direction is the right direction, and the X2 direction is the left direction. The Y direction in each figure is the axial direction of the corrugated tube in the embodiment, and is a direction orthogonal to the width direction.

本実施形態におけるコルゲートチューブ１は、自動車等の車両に搭載される電線Ｗを外部から保護する部材として使用するものである。コルゲートチューブ１は、図１〜図５に示すように、コルゲートチューブ本体部２と、被ロック部３と、ロック部４と、ベロ部５と、許容部６と、から構成される。なお、電線Ｗは、複数本の導電性の金属素線からなる導体部（芯線）の外側を絶縁性の被覆部によって覆われたものが１本又は複数本集合したものである。 The corrugated tube 1 in the present embodiment is used as a member for protecting the electric wire W mounted on a vehicle such as an automobile from the outside. As shown in FIGS. 1 to 5, the corrugated tube 1 is composed of a corrugated tube main body portion 2, a locked portion 3, a lock portion 4, a tongue portion 5, and an allowable portion 6. The electric wire W is a set of one or a plurality of electric wires whose outside of a conductor portion (core wire) composed of a plurality of conductive metal strands is covered with an insulating covering portion.

コルゲートチューブ本体部２は、電線Ｗを収容するものである。コルゲートチューブ本体部２は、絶縁性の樹脂材料で形成され、可撓性を有するものである。コルゲートチューブ本体部２は、図１および図２に示すように、電線Ｗを組み付けた後の状態（以下、「組付後状態」という。）において、内部空間２１を有する筒型形状に形成されており、外周面の周方向に沿って凹状の凹部２ａと凸状の凸部２ｂとが軸方向に交互に連続することで、蛇腹状に形成される。コルゲートチューブ本体部２は、図３および図４に示すように、電線Ｗを組み付ける前（以下、「組付前状態」という。）の状態において、軸方向から見た場合において、開口部２２を有するように湾曲して形成される。コルゲートチューブ本体部２は、電線Ｗをコルゲートチューブ本体部２の内部空間２１に挿入した後に、軸方向周りにコルゲートチューブ本体部２の両端部を近づけ、コルゲートチューブ本体部２の両端部の一部が互いに重なるようにラップさせることで、コルゲートチューブ本体部２を閉じて、すなわち開口部２２を閉じて、電線Ｗを収容する。コルゲートチューブ本体部２は、第１部材２３と、第２部材２４と、ベロ部５と、許容部６と、から構成される。 The corrugated tube main body 2 accommodates the electric wire W. The corrugated tube main body 2 is made of an insulating resin material and has flexibility. As shown in FIGS. 1 and 2, the corrugated tube main body 2 is formed in a tubular shape having an internal space 21 in a state after the electric wire W is assembled (hereinafter, referred to as “post-assembly state”). The concave concave portion 2a and the convex convex portion 2b are alternately continuous in the axial direction along the circumferential direction of the outer peripheral surface to form a bellows shape. As shown in FIGS. 3 and 4, the corrugated tube main body 2 has an opening 22 when viewed from the axial direction in a state before assembling the electric wire W (hereinafter, referred to as “pre-assembly state”). It is formed curved to have. After inserting the electric wire W into the internal space 21 of the corrugated tube main body 2, the corrugated tube main body 2 brings both ends of the corrugated tube main body 2 close to each other in the axial direction, and a part of both ends of the corrugated tube main body 2. By wrapping them so that they overlap each other, the corrugated tube main body 2 is closed, that is, the opening 22 is closed, and the electric wire W is accommodated. The corrugated tube main body 2 is composed of a first member 23, a second member 24, a tongue portion 5, and an allowable portion 6.

第１部材２３は、図１〜図５に示すように、軸方向から見た場合において、円弧形状に形成されており、外周面の周方向に沿って凹状の凹部２３ａと凸状の凸部２３ｂとが軸方向に交互に連続することで、蛇腹状に形成される。本実施形態の第１部材２３は、軸方向から見た場合において、許容部６に対して左方向（Ｘ２方向）側に形成される。第１部材２３は、第１部材２３の周方向の一方の端部に被ロック部３が連結され、他方の端部に許容部６が連結される。各凹部２３ａの延在方向、すなわち周方向の両端部は、被ロック部３および許容部６にそれぞれ連結されている。各凸部２３ｂの延在方向、すなわち周方向の両端部は、第１部材２３の径方向内側に延在しており、径方向内側の端部において被ロック部３および許容部６にそれぞれ連結されている。 As shown in FIGS. 1 to 5, the first member 23 is formed in an arc shape when viewed from the axial direction, and has a concave concave portion 23a and a convex convex portion along the circumferential direction of the outer peripheral surface. 23b and 23b are alternately continuous in the axial direction to form a bellows shape. The first member 23 of the present embodiment is formed on the left direction (X2 direction) side with respect to the allowable portion 6 when viewed from the axial direction. In the first member 23, the locked portion 3 is connected to one end of the first member 23 in the circumferential direction, and the allowable portion 6 is connected to the other end. Both ends of each recess 23a in the extending direction, that is, in the circumferential direction, are connected to the locked portion 3 and the allowable portion 6, respectively. Both ends of each convex portion 23b in the extending direction, that is, in the circumferential direction, extend radially inward of the first member 23, and are connected to the locked portion 3 and the allowable portion 6 at the radially inner end portion, respectively. Has been done.

第２部材２４は、図１〜図５に示すように、軸方向から見た場合において、円弧形状に形成されており、外周面の周方向に沿って凹状の凹部２４ａと凸状の凸部２４ｂとが軸方向に交互に連続することで、蛇腹状に形成される。本実施形態の第２部材２４は、軸方向から見た場合において、許容部６に対して右方向（Ｘ１方向）側に形成される。第２部材２４は、第２部材２４の周方向の一方の端部にロック部４が連結され、他方の端部に許容部６が連結される。各凹部２４ａの延在方向、すなわち周方向の両端部は、ロック部４および許容部６にそれぞれ連結されている。各凸部２４ｂの延在方向、すなわち周方向の両端部は、第２部材２４の径方向内側に延在しており、径方向内側の端部においてロック部４および許容部６にそれぞれ連結されている。 As shown in FIGS. 1 to 5, the second member 24 is formed in an arc shape when viewed from the axial direction, and has a concave concave portion 24a and a convex convex portion along the circumferential direction of the outer peripheral surface. 24b and 24b are alternately continuous in the axial direction to form a bellows shape. The second member 24 of the present embodiment is formed on the right side (X1 direction) side with respect to the allowable portion 6 when viewed from the axial direction. In the second member 24, the lock portion 4 is connected to one end of the second member 24 in the circumferential direction, and the allowable portion 6 is connected to the other end. Both ends of each recess 24a in the extending direction, that is, in the circumferential direction, are connected to the lock portion 4 and the allowable portion 6, respectively. The extending direction, that is, both ends in the circumferential direction of each convex portion 24b extend radially inwardly of the second member 24, and are connected to the locking portion 4 and the allowable portion 6 at the radially inner end portion, respectively. ing.

被ロック部３は、組付後状態において、ロック部４に係止されるものである。被ロック部３は、図３〜図５に示すように、軸方向から見た場合において、円弧形状に形成されており、外周面の周方向に沿って凹状の凹部３ａと凸状の凸部３ｂとが軸方向に交互に連続することで、蛇腹状に形成される。被ロック部３は、コルゲートチューブ本体部２の湾曲する方向のうち一端、本実施形態では第１部材２３の周方向のうち、許容部６側と反対側に形成される。本実施形態における被ロック部３は、周方向の両端部のうち、一方の端部に第１部材２３が連結され、他方の端部にベロ部５が連結される。被ロック部３のうち、各凸部３ｂは、頂面３１と、直交面３２と、傾斜面３３と、から構成される。頂面３１は、軸方向から見た場合において、コルゲートチューブ本体部２の外周面の一部を形成するものである。頂面３１は、円弧形状に形成されている。直交面３２および傾斜面３３は、軸方向から見た場合において、頂面３１の延在方向、すなわち周方向において対向し、頂面３１の両端部から形成される一対の側面である。直交面３２および傾斜面３３は、頂面３１の周方向における両端部より、第１部材２３における径方向内側に延在して形成されている。直交面３２は、軸方向から見た場合において、第１部材２３側に形成されており、頂面３１と直交する。傾斜面３３は、軸方向から見た場合において、第１部材２３側と反対側、すなわちベロ部５側に形成されており、頂面３１と直交する方向と交差し、ロック部４の後述する傾斜面４３と同一方向に傾斜して形成される。なお、各凹部３ａの延在方向、すなわち周方向の両端部は、第１部材２３の各凹部２３ａおよびベロ部５の後述する凹部５ａにそれぞれ連結されている。 The locked portion 3 is locked to the locked portion 4 in the assembled state. As shown in FIGS. 3 to 5, the locked portion 3 is formed in an arc shape when viewed from the axial direction, and has a concave concave portion 3a and a convex convex portion along the circumferential direction of the outer peripheral surface. 3b and 3b are alternately continuous in the axial direction to form a bellows shape. The locked portion 3 is formed at one end in the curved direction of the corrugated tube main body portion 2, and in the present embodiment, on the side opposite to the allowable portion 6 side in the circumferential direction of the first member 23. In the locked portion 3 in the present embodiment, the first member 23 is connected to one end of both ends in the circumferential direction, and the tongue portion 5 is connected to the other end. Of the locked portions 3, each convex portion 3b is composed of a top surface 31, an orthogonal surface 32, and an inclined surface 33. The top surface 31 forms a part of the outer peripheral surface of the corrugated tube main body 2 when viewed from the axial direction. The top surface 31 is formed in an arc shape. The orthogonal surface 32 and the inclined surface 33 face each other in the extending direction of the top surface 31, that is, in the circumferential direction when viewed from the axial direction, and are a pair of side surfaces formed from both ends of the top surface 31. The orthogonal surface 32 and the inclined surface 33 are formed so as to extend radially inward in the first member 23 from both ends in the circumferential direction of the top surface 31. The orthogonal surface 32 is formed on the side of the first member 23 when viewed from the axial direction, and is orthogonal to the top surface 31. The inclined surface 33 is formed on the side opposite to the first member 23 side, that is, on the tongue portion 5 side when viewed from the axial direction, intersects the direction orthogonal to the top surface 31, and is described later in the lock portion 4. It is formed so as to be inclined in the same direction as the inclined surface 43. Both ends of each recess 3a in the extending direction, that is, in the circumferential direction, are connected to each recess 23a of the first member 23 and a recess 5a described later in the tongue portion 5.

ロック部４は、組付後状態において、被ロック部３を係止するものである。ロック部４は、図３〜図５に示すように、軸方向から見た場合において、円弧形状に形成されており、外周面の周方向に沿って凹状の凹部４ａと凸状の凸部４ｂとが軸方向に交互に連続することで、蛇腹状に形成される。ロック部４は、コルゲートチューブ本体部２の湾曲する方向のうち他端、本実施形態では第２部材２４の周方向のうち、許容部６側と反対側に形成される。本実施形態におけるロック部４は、周方向の両端部のうち、一方の端部に第２部材２４が連結され、他方の端部は自由端である。ロック部４のうち、各凸部４ｂは、頂面４１と、直交面４２と、傾斜面４３と、から構成される。頂面４１は、軸方向から見た場合において、コルゲートチューブ本体部２の外周面の一部を形成するものである。頂面４１は、円弧形状に形成されている。直交面４２および傾斜面４３は、軸方向から見た場合において、頂面４１の延在方向、すなわち周方向において対向し、頂面４１の両端部から形成される一対の側面である。直交面４２および傾斜面４３は、頂面４１の周方向における両端部より、第２部材２４における径方向内側に延在して形成されている。直交面４２は、軸方向から見た場合において、第２部材２４側と反対側に形成されており、頂面４１と直交する。傾斜面４３は、軸方向から見た場合において、第２部材２４側に形成されており、頂面４１と直交する方向と交差し、コルゲートチューブ本体部２側、すなわち第２部材２４側に向かって傾斜して形成されている。ロック部４は、組付後状態において、被ロック部３の外周面と対向し、被ロック部３とラップする。 The locked portion 4 locks the locked portion 3 in the assembled state. As shown in FIGS. 3 to 5, the lock portion 4 is formed in an arc shape when viewed from the axial direction, and has a concave concave portion 4a and a convex convex portion 4b along the circumferential direction of the outer peripheral surface. And are formed in a bellows shape by alternately continuing in the axial direction. The lock portion 4 is formed at the other end of the bending direction of the corrugated tube main body portion 2, or in the circumferential direction of the second member 24 in the present embodiment, on the side opposite to the allowable portion 6 side. In the lock portion 4 in the present embodiment, the second member 24 is connected to one end of both ends in the circumferential direction, and the other end is a free end. Of the lock portions 4, each convex portion 4b is composed of a top surface 41, an orthogonal surface 42, and an inclined surface 43. The top surface 41 forms a part of the outer peripheral surface of the corrugated tube main body 2 when viewed from the axial direction. The top surface 41 is formed in an arc shape. The orthogonal surface 42 and the inclined surface 43 face each other in the extending direction of the top surface 41, that is, in the circumferential direction when viewed from the axial direction, and are a pair of side surfaces formed from both ends of the top surface 41. The orthogonal surface 42 and the inclined surface 43 are formed so as to extend radially inward in the second member 24 from both ends in the circumferential direction of the top surface 41. The orthogonal surface 42 is formed on the side opposite to the second member 24 side when viewed from the axial direction, and is orthogonal to the top surface 41. The inclined surface 43 is formed on the second member 24 side when viewed from the axial direction, intersects the direction orthogonal to the top surface 41, and faces the corrugated tube main body 2 side, that is, the second member 24 side. It is formed at an angle. The locked portion 4 faces the outer peripheral surface of the locked portion 3 and wraps with the locked portion 3 in the assembled state.

ベロ部５は、被ロック部３を挟んで、コルゲートチューブ本体部２側、すなわち第１部材２３と反対側に形成されている。ベロ部５は、開口部２２をコルゲートチューブ本体部２により閉じる際に、ロック部４を被ロック部３へ案内するものである。ベロ部５は、図１〜図５に示すように、円弧形状に形成されており、外周面の周方向に沿って凹状の凹部５ａと凸状の凸部５ｂとが軸方向に交互に連続することで、蛇腹状に形成される。本実施形態におけるベロ部５は、軸方向から見た場合において、周方向の両端部のうち、一方の端部に被ロック部３が連結されている。ベロ部５は、組付後状態において、第２部材２４の内周面と対向し、第２部材２４とラップする。各凸部５ｂの延在方向、すなわち周方向の両端部は、第２部材２４の径方向内側に延在しており、一方の端部の径方向内側の端部が傾斜面３３と連結されており、他方の端部は周方向に開口している。 The tongue portion 5 is formed on the corrugated tube main body portion 2 side, that is, on the side opposite to the first member 23, with the locked portion 3 interposed therebetween. The tongue portion 5 guides the lock portion 4 to the locked portion 3 when the opening portion 22 is closed by the corrugated tube main body portion 2. As shown in FIGS. 1 to 5, the tongue portion 5 is formed in an arc shape, and concave concave portions 5a and convex convex portions 5b are alternately continuous in the axial direction along the circumferential direction of the outer peripheral surface. By doing so, it is formed in a bellows shape. In the tongue portion 5 of the present embodiment, the locked portion 3 is connected to one end of both ends in the circumferential direction when viewed from the axial direction. The tongue portion 5 faces the inner peripheral surface of the second member 24 and wraps with the second member 24 in the assembled state. The extending direction, that is, both ends in the circumferential direction of each convex portion 5b extend radially inwardly of the second member 24, and the radially inner end portion of one end portion is connected to the inclined surface 33. The other end is open in the circumferential direction.

許容部６は、第１部材２３と、第２部材２４との間に形成されるものである。許容部６は、軸方向から見た場合において、開口部２２をコルゲートチューブ本体部２により閉じる際に、被ロック部３とロック部４を近づけるように、支点として第１部材２３および第２部材２４を回転することを許容するものである。許容部６は、図１〜図５に示すように、平板状に形成されており、軸方向に延在して形成されている。許容部６は、幅方向の両端部に第１部材２３と第２部材２４とが連結されている。許容部６は、第１部材２３または第２部材２４とは異なり、軸方向に凹凸が交互に連続して形成されていない。 The permissible portion 6 is formed between the first member 23 and the second member 24. When the opening 22 is closed by the corrugated tube main body 2, the allowable portion 6 has the first member 23 and the second member as fulcrums so that the locked portion 3 and the lock portion 4 are brought close to each other. It allows the 24 to rotate. As shown in FIGS. 1 to 5, the allowable portion 6 is formed in a flat plate shape, and is formed so as to extend in the axial direction. In the allowable portion 6, the first member 23 and the second member 24 are connected to both ends in the width direction. Unlike the first member 23 or the second member 24, the permissible portion 6 is not formed with irregularities alternately and continuously in the axial direction.

次に、本実施形態におけるコルゲートチューブ１の組み立てについて説明する。まず、作業員は、コルゲートチューブ本体部２に対応する金型から押し出されて形成されるコルゲートチューブ本体部２に対して、第１部材２３と第２部材２４との間のうち、許容部６と反対側の部分を切り取り、開口部２２を形成する。これにより、コルゲートチューブ本体部２は、組付前状態となる。次に、作業員は、組付前状態のコルゲートチューブ本体部２に対して、開口部２２から電線Ｗを内部空間２１に挿入する。次に、作業員は、軸方向から見た場合において、被ロック部３とロック部４を近づけるように、許容部６を支点として第１部材２３および第２部材２４を回転させる。このとき、ロック部４の直交面４２がベロ部５と接触する。作業員が第１部材２３および第２部材２４をさらに回転させると、ロック部４がベロ部５を乗り上げ、ロック部４の内周面とベロ部５の外周面とが対向し、ベロ部５の外周面がロック部４の内周面とのラップ量が増加する。作業員が第１部材２３および第２部材２４をさらに回転させると、ベロ部５がロック部４を被ロック部３に対して案内するように移動する。作業員が第１部材２３および第２部材２４をさらに回転させると、ロック部４の直交面４２が被ロック部３の傾斜面３３に乗り上げ、傾斜面３３を乗り越えることで、被ロック部３の頂面３１に接触する。作業員が第１部材２３および第２部材２４をさらに回転させると、ロック部４の直交面４２が頂面３１を乗り越え、ロック部４の直交面４２と被ロック部３の直交面３２とが周方向において対向し、互いに接触する。これにより、ロック部４が被ロック部３を係止する。このとき、ベロ部５の外周面と、第２部材２４の内周面とが径方向において対向し、ベロ部５と第２部材２４とがラップ、すなわちベロ部５がコルゲートチューブ本体部２と重なる。これにより、ロック部４が被ロック部３を係止し、電線Ｗが収容されることでコルゲートチューブ１を組み立てる。次に、作業員は、組み立てたコルゲートチューブ１を自動車等に設置し、電線Ｗとモータ等とを電気的に接続する。 Next, the assembly of the corrugated tube 1 in the present embodiment will be described. First, the worker allows the corrugated tube main body 2 formed by being extruded from the mold corresponding to the corrugated tube main body 2 among the allowable portions 6 between the first member 23 and the second member 24. The portion opposite to the above is cut off to form the opening 22. As a result, the corrugated tube main body 2 is in the state before assembly. Next, the worker inserts the electric wire W into the internal space 21 from the opening 22 with respect to the corrugated tube main body 2 in the state before assembly. Next, the worker rotates the first member 23 and the second member 24 with the permissible portion 6 as a fulcrum so that the locked portion 3 and the locked portion 4 come close to each other when viewed from the axial direction. At this time, the orthogonal surface 42 of the lock portion 4 comes into contact with the tongue portion 5. When the worker further rotates the first member 23 and the second member 24, the lock portion 4 rides on the tongue portion 5, the inner peripheral surface of the lock portion 4 and the outer peripheral surface of the tongue portion 5 face each other, and the tongue portion 5 The amount of lap between the outer peripheral surface and the inner peripheral surface of the lock portion 4 increases. When the worker further rotates the first member 23 and the second member 24, the tongue portion 5 moves so as to guide the lock portion 4 with respect to the locked portion 3. When the worker further rotates the first member 23 and the second member 24, the orthogonal surface 42 of the lock portion 4 rides on the inclined surface 33 of the locked portion 3 and gets over the inclined surface 33, whereby the locked portion 3 is locked. Contact the top surface 31. When the worker further rotates the first member 23 and the second member 24, the orthogonal surface 42 of the lock portion 4 gets over the top surface 31, and the orthogonal surface 42 of the lock portion 4 and the orthogonal surface 32 of the locked portion 3 are brought into contact with each other. They face each other in the circumferential direction and come into contact with each other. As a result, the locked portion 4 locks the locked portion 3. At this time, the outer peripheral surface of the tongue portion 5 and the inner peripheral surface of the second member 24 face each other in the radial direction, and the tongue portion 5 and the second member 24 wrap, that is, the tongue portion 5 and the corrugated tube main body portion 2. Overlap. As a result, the locked portion 4 locks the locked portion 3, and the electric wire W is accommodated to assemble the corrugated tube 1. Next, the worker installs the assembled corrugated tube 1 in an automobile or the like, and electrically connects the electric wire W and the motor or the like.

以上のように、本実施形態におけるコルゲートチューブ１は、被ロック部３にベロ部５が形成されていることで、ベロ部５が形成されていないコルゲートチューブと比べて、電線Ｗを組み付ける状態において、ベロ部５がロック部４を被ロック部３へ案内させることで、ロック部４が被ロック部３を係止しやすくなるため、電線Ｗの組み付け作業性を向上させることができる。また、ロック部４が被ロック部３を係止することで、曲げまたはねじれ等の変形に対してラップが解除されることによる電線Ｗの露出を抑制することができる。 As described above, in the corrugated tube 1 in the present embodiment, since the tongue portion 5 is formed in the locked portion 3, the electric wire W is assembled as compared with the corrugated tube in which the tongue portion 5 is not formed. By guiding the locked portion 4 to the locked portion 3 by the tongue portion 5, the locked portion 4 can easily lock the locked portion 3, so that the assembling workability of the electric wire W can be improved. Further, by locking the locked portion 3 by the locked portion 4, it is possible to suppress the exposure of the electric wire W due to the release of the wrap against deformation such as bending or twisting.

また、本実施形態におけるコルゲートチューブ１は、コルゲートチューブ本体部２に許容部６が形成されていることで、許容部６を支点として第１部材２３および第２部材２４を回転させやすくなる。従って、作業員が簡単に第１部材２３および第２部材２４を回転させることができるので、電線Ｗの組み付け作業性をさらに向上させることができる。 Further, in the corrugated tube 1 of the present embodiment, since the permissible portion 6 is formed in the corrugated tube main body portion 2, it becomes easy to rotate the first member 23 and the second member 24 with the permissible portion 6 as a fulcrum. Therefore, since the worker can easily rotate the first member 23 and the second member 24, the assembling workability of the electric wire W can be further improved.

また、本実施形態におけるコルゲートチューブ１は、ロック部４と被ロック部３にそれぞれ直交面３２，４２が形成されていることで、組付後状態において、コルゲートチューブ本体部２が開こうとする力、すなわち被ロック部３の直交面３２がロック部４の直交面４２を押す力が、被ロック部３の直交面３２に対して垂直に働くことで、ロック部４に対して被ロック部３が外れ難くなる。従って、曲げまたはねじれ等の変形に対してラップが解除されることによる電線Ｗの露出をさらに抑制することができる。また、被ロック部３に傾斜面３３が形成されていることで、ロック部４が被ロック部３に乗り上げやすくなり、電線Ｗの組み付け作業性をさらに向上させることができる。 Further, in the corrugated tube 1 in the present embodiment, the orthogonal surfaces 32 and 42 are formed on the locked portion 4 and the locked portion 3, respectively, so that the corrugated tube main body portion 2 tends to open in the post-assembled state. The force, that is, the force that the orthogonal surface 32 of the locked portion 3 pushes the orthogonal surface 42 of the locked portion 4 acts perpendicularly to the orthogonal surface 32 of the locked portion 3, so that the locked portion 4 is locked. 3 is hard to come off. Therefore, it is possible to further suppress the exposure of the electric wire W due to the release of the lap due to deformation such as bending or twisting. Further, since the inclined surface 33 is formed on the locked portion 3, the locked portion 4 can easily ride on the locked portion 3, and the assembling workability of the electric wire W can be further improved.

上記本実施形態におけるコルゲートチューブ１は、被ロック部３に対してベロ部５が形成されていたが、これに限定されるものではない。図６は、変形例における電線Ｗの組付後状態を示すコルゲートチューブの断面図である。コルゲートチューブ１は、ロック部４に対してベロ部５が形成されていてもよい。この場合、コルゲートチューブ１は、軸方向から見て、被ロック部３とロック部４を近づけるように、許容部６を支点として第１部材２３および第２部材２４を回転させることで、ベロ部５が被ロック部３を乗り上げ、ベロ部５の内周面と被ロック部３の外周面とが対向し、ベロ部５がロック部４を被ロック部３に対して案内するように移動する。 In the corrugated tube 1 in the present embodiment, the tongue portion 5 is formed with respect to the locked portion 3, but the corrugated tube 1 is not limited to this. FIG. 6 is a cross-sectional view of a corrugated tube showing a state after assembly of the electric wire W in the modified example. The corrugated tube 1 may have a tongue portion 5 formed with respect to the lock portion 4. In this case, the corrugated tube 1 has a tongue portion by rotating the first member 23 and the second member 24 with the allowable portion 6 as a fulcrum so that the locked portion 3 and the locked portion 4 are brought close to each other when viewed from the axial direction. 5 rides on the locked portion 3, the inner peripheral surface of the tongue portion 5 and the outer peripheral surface of the locked portion 3 face each other, and the tongue portion 5 moves so as to guide the locked portion 4 to the locked portion 3. ..

また、上記本実施形態におけるコルゲートチューブ１は、被ロック部３に対してベロ部５が形成されていたが、これに限定されるものではなく、被ロック部３およびロック部４に対してベロ部５が形成されていてもよい。 Further, in the corrugated tube 1 in the present embodiment, the tongue portion 5 is formed with respect to the locked portion 3, but the present invention is not limited to this, and the tongue portion 5 is formed with respect to the locked portion 3 and the locked portion 4. The portion 5 may be formed.

１コルゲートチューブ
２コルゲートチューブ本体部
２ａ凹部
２ｂ凸部
２１内部空間
２２開口部
２３第１部材
２４第２部材
３被ロック部
３１頂面
３２直交面
３３傾斜面
４ロック部
４１頂面
４２直交面
４３傾斜面
５ベロ部
６許容部
Ｗ電線 1 Corrugated tube 2 Corrugated tube body 2a Concave 2b Convex 21 Internal space 22 Opening 23 First member 24 Second member 3 Locked part 31 Top surface 32 Orthogonal surface 33 Inclined surface 4 Locked part 41 Top surface 42 Orthogonal surface 43 Inclined surface 5 Tongue part 6 Allowable part W Electric wire

Claims

The main body, which is curved when viewed from the axial direction of the corrugated tube,
A locked portion formed at one end of the bending direction of the main body portion,
A lock portion formed at the other end of the bending direction of the main body portion and locked to the locked portion, and a lock portion.
A tongue portion formed on the side opposite to the main body portion side with the locked portion or the lock portion sandwiched thereof is provided.
In the closed state of the main body portion, the lock portion is configured to lock the locked portion, the tongue portion, Ri and Do heavy said body portion,
The locked portion and the locked portion are viewed from the axial direction.
The top surface forming a part of the outer peripheral surface of the main body and
A pair of side surfaces facing each other in the extending direction of the top surface and formed from both ends of the top surface.
Of the pair of side surfaces of the lock portion, the side surface opposite to the main body portion side is an orthogonal surface orthogonal to the top surface, and the side surface on the main body portion side intersects the direction orthogonal to the top surface. However, it is an inclined surface that inclines toward the main body side.
Of the pair of side surfaces of the locked portion, the side surface on the main body side is an orthogonal surface orthogonal to the top surface, and the side surface opposite to the main body side is a direction orthogonal to the top surface. An inclined surface that intersects and is inclined in the same direction as the inclined surface of the lock portion.
Corrugated tube characterized by that.

The main body is
The arc-shaped first member and
The arc-shaped second member and
A permissible portion formed between the first member and the second member is provided.
In the first member, the locked portion is formed on the side opposite to the allowable portion side, and the locked portion is formed.
In the second member, the lock portion is formed on the side opposite to the allowable portion side.
The permissible portion allows the first member and the second member to rotate as fulcrums so that the locked portion and the locked portion are brought close to each other when viewed from the axial direction.
The corrugated tube according to claim 1.