JP2015097464A - Corrugate tube, wire harness and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugate tube capable of passing a cable having a thick part in other than a part to be protected, and capable of preventing the exposure and the extension of a cable to the outside.SOLUTION: The corrugate tube has a bellows structure formed in a tubular shape without a gap in a circumferential direction, with ridge parts and groove parts formed on an outer peripheral surface and juxtaposed alternately in the axial center direction along the circumferential direction. The corrugate tube includes a diameter expansion part which extends transversely in the axial center direction across a part of each ridge part and each groove part in the circumferential direction, and is movable to the inner peripheral side or the outer peripheral side of the ridge part and the groove part so that mutually facing ridge parts and mutually facing groove parts, located on both sides of the circumferential direction, are closed.

Description

  The present invention relates to a corrugated tube covering the periphery of a cable.

  2. Description of the Related Art Conventionally, a wire harness mounted on a vehicle such as an automobile often includes a corrugated tube as a protector covering the periphery of a cable such as an electric wire or an optical fiber cable. The corrugated tube has a bellows structure in which ridges and grooves along the circumferential direction are alternately formed on the outer circumferential surface in the axial direction.

  The corrugated tube has flexibility in the longitudinal direction by having a bellows structure. By covering the cable with the corrugated tube, the cable does not come into contact with surrounding members according to vibration or movement of the movable part, and durability is increased.

  Moreover, as shown in Patent Documents 1 and 2, the corrugated tube often has a series of cuts extending in the entire longitudinal direction. Thereby, even when a member such as a connector having a width larger than the thickness of the cable is attached to a portion other than the portion to be protected in the cable, the portion to be protected of the cable can be inserted into the corrugated tube.

  The cable is inserted into the corrugated tube from between the circumferential ends of the corrugated tube (cut). At that time, the corrugated tube is expanded to both sides of the cut using a dedicated jig, and the cable is inserted into the corrugated tube through the gap formed by the jig.

  Moreover, the corrugated tube shown by patent document 1, 2 is equipped with the lock structure which maintains the said corrugated tube in a tubular shape, when the both ends in the circumferential direction mutually fit. The corrugated tube may be maintained in a tubular shape by winding an adhesive tape.

JP 2003-79021 A JP 2012-5256 A

  By the way, a corrugated tube tends to receive the external force of the circumferential direction or an outer direction by the external force added to the cable which penetrates it, or bending deformation.

  In the corrugated tubes shown in Patent Documents 1 and 2, in the unlikely event that the lock structure is subjected to a strong external force and the lock is released, the cable may be exposed to the outside from the cut of the corrugated tube and further protrude.

  On the other hand, in the conventional corrugated tube, when the cut is not formed, a cable having a thick portion other than the portion to be protected cannot be passed through the corrugated tube.

  The objective of this invention is providing the corrugated tube which can let the cable which has a thick part other than a protection object part pass, and can prevent the exposure and protrusion of the cable outside.

  The corrugated tube which concerns on a 1st aspect is formed in the tubular shape which does not have a cut | interruption in the circumferential direction, The corrugated tube which has the bellows structure in which the protruding part and groove part which followed the circumferential direction on the outer peripheral surface were formed in a line in the axial direction alternately Each of the raised portions and each of the groove portions extend in the axial direction across the circumferential direction and are located on both sides in the circumferential direction and face each other. Is provided with an enlarged diameter portion that can move to the inner peripheral side or the outer peripheral side of the raised portion and the groove portion.

  The corrugated tube according to the second aspect is a corrugated tube according to the first aspect, wherein the plurality of first partition walls partitioning each of the raised portions from the outer peripheral surface to the depth of the groove at the first position in the circumferential direction A first partition arrangement portion that is a portion formed in a line along the axial direction, and a plurality of second partition walls that partition each of the raised portions from the outer peripheral surface to the depth of the groove portion at a second position in the circumferential direction. A second partition array portion that is a portion formed in a line along the axial direction, and the expanded diameter portion includes each of the first partition portion and the second partition portion. A plurality of fitting projections protruding toward the outer peripheral surface side at a position between the fitting projection arrangement portion that is a portion formed in a line along the axial direction, and each of the first partition portions At a position between each of the second partition walls A plurality of fitting recesses that are recessed toward the peripheral surface and into which the respective fitting projections can be fitted, and a fitting recess arrangement portion that is formed in a line along the axial direction; The first partition wall array portion and the second partition wall array portion, and the fitting convex array portion and the fitting concave array portion are formed with a thickness smaller than that portion along the axial direction. And two thin portions that can be folded back along the axial direction.

  The corrugated tube which concerns on a 3rd aspect is a corrugated tube which concerns on a 2nd aspect, Comprising: Between the said 1st partition arrangement | sequence part and the said 2nd partition arrangement | positioning part, the said fitting convex arrangement part and the said fitting concave arrangement part And two sets of the two thin-walled portions.

  The corrugated tube which concerns on a 4th aspect is a corrugated tube which concerns on a 1st aspect, Comprising: The said enlarged diameter part is connected in the center part of the circumferential direction so that bending is possible with the bending line along the said axial direction. The pair of divided enlarged diameter portions are bent along the folding line and moved to the outer peripheral side or the inner peripheral side of the raised portion and the groove portion, whereby the circumferential direction of the enlarged diameter portion The raised portions and the groove portions that are located on both sides and face each other are brought closer to each other in a closing direction.

  A corrugated tube according to a fifth aspect is the corrugated tube according to the fourth aspect, wherein the pair of divided enlarged diameter portions are folded and folded on the folding line, and the inside of the raised portion and the groove portion Cross sections perpendicular to the axial direction of each of the pair of divided enlarged diameter portions are formed in an arc shape so as to be curved along the circumferential side or the outer circumferential side.

  A corrugated tube according to a sixth aspect is the corrugated tube according to the fifth aspect, wherein the pair of divided enlarged diameter portions are folded on each other, and each of the raised portions and the outer peripheral surface of each of the groove portions or Concave and convex portions corresponding to the concave and convex shape of the inner peripheral surface are provided.

  The wire harness which concerns on a 7th aspect is fixed with a binding tool in the state which the electric wire and the said electric wire were penetrated, and the said enlarged diameter part closed by moving to the inner peripheral side or outer peripheral side of the said protruding part and the said groove part And a corrugated tube according to any one of the fourth to sixth aspects.

  The manufacturing method of the wire harness according to the eighth aspect expands the diameter-expanded portion of the corrugated tube according to any one of the first aspect to the sixth aspect, and is positioned on both sides in the circumferential direction to face each other. In a state where the raised portions and the groove portions are opened, the step of inserting at least one electric wire connected to the connector from the connector side to the corrugated tube; and the enlarged diameter portion of the raised portion and the groove portion The step of closing the ridges and the grooves facing each other by moving to the inner peripheral side or the outer periphery, and maintaining the corrugated tube in a state where the ridges and the grooves facing each other are closed. Steps.

  In the corrugated tube according to each of the above aspects, the diameter-enlarged portion moves to the inner peripheral side or the outer peripheral side of the raised portion and the groove portion so that the raised portions and the groove portions facing each other located on both sides in the circumferential direction are closed. Is possible. Therefore, the corrugated tube is a tube having a relatively large inner diameter in the original shape before the enlarged diameter portion moves, and a cable having a thick portion other than the portion to be protected can be passed through the corrugated tube in the original shape. . Furthermore, the corrugated tube has a relatively large inner diameter when the enlarged diameter portion moves toward the inner peripheral side or the outer peripheral side of the raised portion and the groove portion and the raised portions and the groove portions on both sides in the circumferential direction of the enlarged diameter portion are closed. The tube has a smaller inner diameter suitable for accommodating the protected portion of the cable. Furthermore, the corrugated tube is formed in a tubular shape having no cut in the circumferential direction. Thereby, even when the expanded diameter portion returns to the state before the movement and the corrugated tube returns to the original state, it is possible to prevent the cable accommodated in the corrugated tube from being exposed to the outside and protruding.

  The corrugated tube which concerns on a 2nd aspect is a tubular shape with a comparatively big internal diameter in the original form before each fitting convex part of an enlarged diameter part is inserted in each fitting recessed part. Therefore, it is possible to pass a cable having a thick part other than the part to be protected through the corrugated tube in its original state.

  Furthermore, in the corrugated tube according to the second aspect, each of the two thin portions of the enlarged diameter portion is folded back, and each of the fitting convex portions is fitted into each of the fitting concave portions. Accordingly, the corrugated tube changes from a tube having a relatively large inner diameter to a tube having an inner diameter suitable for the thickness of the protection target portion of the cable. Moreover, the fitting structure of each fitting convex part and each fitting concave part hold | maintains a corrugated tube in the tubular shape thinner than the original state.

  Furthermore, the corrugated tube which concerns on a 2nd aspect is formed in the tubular shape which does not have a cut | interruption in the circumferential direction. For this reason, even if the fitting convex portion and the fitting concave portion are partially disengaged, it is possible to prevent the cable from being exposed to the outside and protruding.

  In the corrugated tube according to the third aspect, two sets of structures for reducing the inner diameter of the corrugated tube (a fitting convex arrangement part, a fitting concave arrangement part, and two thin-walled parts) are provided. Thereby, the reduction degree of the internal diameter of a corrugated tube can be raised more, and it becomes possible to let the cable which has a thicker part pass through a corrugated tube.

  In the corrugated tube according to the fourth aspect, the pair of divided enlarged diameter portions included in the enlarged diameter portion are bent at a folding line along the axial direction and moved to the outer peripheral side or inner peripheral side of the raised portion and the groove portion. Thus, the raised portions and the groove portions facing each other approach in the closing direction. As a result, the inner diameter of the tubular corrugated tube changes from a relatively large inner diameter to a smaller inner diameter suitable for accommodating the portion to be protected of the cable.

  In the corrugated tube according to the fifth aspect, each of the pair of divided enlarged diameter portions is formed in an arc shape, and the pair of divided enlarged diameter portions are folded and folded on a folding line so that the raised portion and the groove portion are Curve along the inner or outer periphery. Therefore, since the protrusion width of the pair of divided enlarged diameter portions from each of the raised portions and each of the groove portions is reduced, it is possible to suppress a decrease in the internal space or the external space of the corrugated tube.

  The corrugated tube which concerns on a 6th aspect WHEREIN: A pair of division | segmentation enlarged diameter part is provided with the uneven | corrugated | grooved part according to each uneven | corrugated shape of each of a protruding part and each groove part in the state folded mutually. Therefore, it can suppress that the softness | corrugation of a corrugated tube is impaired, suppressing the reduction | decrease of the internal space or external space of a corrugated tube.

  In the wire harness according to the seventh aspect, the corrugated tube into which the electric wire is inserted becomes smaller in the state where the expanded diameter portion moves to the inner peripheral side or the outer peripheral side of the raised portion and the groove portion, and in that state, the binding tool It is fixed. Therefore, the wire harness can be maintained in a state where the inner diameter is small.

  In the method for manufacturing the wire harness according to the eighth aspect, the corrugated tube is formed in a tubular shape having no cut in the circumferential direction. And the electric wire connected to the connector is penetrated from the connector side in the corrugated tube in the state where the bulging portions and the groove portions facing each other located on both sides in the circumferential direction of the enlarged diameter portion are opened. And the said protruding parts and groove parts are closed by the movement of an enlarged diameter part, and the closed state is maintained. Therefore, even when the connector is connected to the electric wire prior to housing the electric wire in the corrugated tube, it is possible to easily manufacture a wire harness that can prevent the accommodated electric wire from being exposed to the outside and protruding.

It is a 1st cross-sectional view in the position in alignment with the protruding part of the corrugated tube 1 which concerns on Embodiment 1. FIG. FIG. 3 is a cross-sectional view at a position along the groove portion of the corrugated tube 1. It is a 2nd cross-sectional view in the position along the protruding part of the corrugated tube. 1 is a perspective view of a corrugated tube 1. It is a 1st cross-sectional view in the position along the protruding part of 1 A of corrugated tubes which concern on Embodiment 2. FIG. It is a cross-sectional view at a position along the groove portion of the corrugated tube 1A. It is a 2nd cross-sectional view in the position along the protruding part of 1 A of corrugated tubes. It is a perspective view of corrugated tube 1A. It is a top view of the wire harness 100 provided with 1 A of corrugated tubes. It is a 1st cross-sectional view in the position along the protruding part of the corrugated tube 1B which concerns on Embodiment 3. FIG. It is a 2nd cross-sectional view in the position along the protruding part of the corrugated tube 1B. It is a perspective view of 1C of corrugated tubes which concern on Embodiment 4. It is a longitudinal cross-sectional view of the diameter-expanded part vicinity of 1 C of closed corrugated tubes.

  Hereinafter, embodiments will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention. In the drawings, parts having the same configuration and function are denoted by the same reference numerals, and redundant description is omitted in the following description.

<Embodiment 1>
<Corrugated tube structure>
Hereinafter, the corrugated tube 1 according to the first embodiment will be described with reference to FIGS. The corrugated tube 1 is a protective tube that covers the periphery of a cable such as an insulated wire or an optical fiber cable in a wire harness mounted on a vehicle such as an automobile.

  The corrugated tube 1 has a bellows structure in which ridges 2 and grooves 3 along the circumferential direction are alternately arranged on the outer peripheral surface in the axial direction. The axial direction is a direction along the center line of the hollow portion of the corrugated tube 1.

  1 and 3 show the corrugated tube 1 cut at the position of the raised portion 2. Moreover, the cross-sectional view of FIG. 2 shows the corrugated tube 1 cut at the position of the groove 3.

  The corrugated tube has flexibility in the longitudinal direction by having a bellows structure. Since the corrugated tube 1 has a bellows structure, the raised portion 2 forms a recess on the inner surface, and the groove portion 3 is formed in a convex shape on the inner surface.

  The corrugated tube 1 is an integrally molded member of synthetic resin such as polyamide (PA), polypropylene (PP), polybutylene terephthalate (PBT), or ABS resin. The corrugated tube 1 is continuously molded by a combination of extrusion molding and blow molding or vacuum molding.

  The corrugated tube 1 is formed in a tubular shape having no cut in the circumferential direction. Nevertheless, the corrugated tube 1 is different from the conventional corrugated tube in that it has a structure that can be reduced from a tube having a relatively large inner diameter to a tube having an inner diameter suitable for the thickness of the protection target portion of the cable 9.

  1-4, the cable 9 passed through the hollow part of the corrugated tube 1 is drawn with a virtual line (two-dot chain line).

  The corrugated tube 1 has a first partition arrangement portion 410, a second partition arrangement portion 420, a first fitting convex arrangement portion 510, a first fitting concave arrangement portion 610, a first thin portion 71, and a second thin portion 72. doing. Furthermore, the corrugated tube 1 has a second fitting convex arrangement part 520, a second fitting concave arrangement part 620, a third thin part 73 and a fourth thin part 74. Furthermore, the corrugated tube 1 also has a hinge part 430.

<Partition arrangement part>
As shown in FIGS. 1 and 4, the first partition array portion 410 is a portion in which a plurality of first partition portions 41 are formed in a line along the axial direction. Each of the first partition walls 41 is a portion that partitions the raised portions 2 aligned in the axial direction from the outer peripheral surface to the depth of the groove 3 at the first position in the circumferential direction.

  Similarly, the second partition array portion 420 is a portion in which a plurality of second partition portions 42 are formed in a line along the axial direction. Each of the second partition wall portions 42 is a portion that partitions the raised portions 2 aligned in the axial direction from the outer peripheral surface to the depth of the groove portion 3 at the second position in the circumferential direction.

<Fitting convex arrangement part>
As shown in FIGS. 1 and 4, the first fitting convex array portion 510 is formed by arranging a plurality of first fitting convex portions 51 that protrude to the outer peripheral surface side by side in a line along the axial direction. Part. Each first fitting convex portion 51 is formed at a position between each first partition wall portion 41 and each second partition wall portion 42.

  Similarly, the 2nd fitting convex arrangement | sequence part 520 is the part in which the several 2nd fitting convex part 52 which protruded to the outer peripheral surface side was formed in a line along the axial center direction, respectively. Each of the second fitting convex portions 52 is formed at a position between each of the first partition wall portion 41 and each of the second partition wall portions 42.

  Therefore, a portion between each of the first fitting convex portions 51 and a portion between each of the second fitting convex portions 52 form a part of the groove portion 3.

  In the present embodiment, the first fitting convex array portion 510 is formed at a position near the first partition array portion 410 between the first partition array portion 410 and the second partition array portion 420. On the other hand, the second fitting convex array portion 520 is formed at a position near the second partition array portion 420 between the first partition array portion 410 and the second partition array portion 420.

<Fitting concave arrangement part>
As shown in FIGS. 1 and 4, the first fitting recess array portion 610 is formed with a plurality of first fitting recesses 61 that are recessed toward the inner peripheral surface side by side in a line along the axial direction. Part. Each 1st fitting recessed part 61 is formed in the position between each 1st partition part 41 and each 2nd partition part 42.

  Similarly, the second fitting recess array portion 620 is a portion in which a plurality of second fitting recesses 62 each recessed toward the inner peripheral surface side are formed in a line along the axial direction. Each of the second fitting recesses 62 is formed at a position between each of the first partition wall portion 41 and each of the second partition wall portions 42.

  Therefore, a portion between each first fitting recess 61 and a portion between each second fitting recess 62 form a part of the groove 3.

  Moreover, each 1st fitting recessed part 61 is formed in the shape and magnitude | size which can fit each corresponding 1st fitting convex part 51 each. Similarly, each 2nd fitting recessed part 62 is formed in the shape and magnitude | size which can fit each 2nd fitting convex part 52 corresponding.

  Each of the first fitting recess 61 and the second fitting recess 62 has a recess on the outer surface and is formed in a convex shape on the inner surface.

  In the present embodiment, the first mating concave array portion 610 has a second partition wall array portion that is more than the position of the first mating convex array portion 510 between the first partition wall array portion 410 and the second partition wall array portion 420. It is formed at a position on the 420 side.

  On the other hand, the second fitting concave array portion 620 is positioned closer to the first partition wall array portion 410 than the position of the second fitting convex array portion 520 between the first partition wall array portion 410 and the second partition wall array portion 420. Is formed.

  Further, the second fitting convex arrangement part 520 and the second fitting concave arrangement part 620 are closer to the second partition arrangement part 420 side than the positions of the first fitting convex arrangement part 510 and the first fitting concave arrangement part 610. Formed in position.

<Thin part>
The first thin portion 71 and the second thin portion 72 are portions that are formed in duplicate along the axial direction with a smaller thickness than the other portions. The 1st thin part 71 and the 2nd thin part 72 are each formed in the sheet form thinner than another part.

  The first thin portion 71 and the second thin portion 72 connect the first partition array portion 410, the first fitting convex array portion 510, and the first fitting concave array portion 610. In the present embodiment, the first thin portion 71 is a portion connecting the first partition array portion 410 and the first fitting convex array portion 510, and the second thin portion 72 is the first fitting convex array portion 510. And the first fitting concave array portion 610.

  Similarly, the third thin portion 73 and the fourth thin portion 74 are portions that are formed in duplicate along the axial direction with a small thickness, like the first thin portion 71 and the second thin portion 72. The 3rd thin part 73 and the 4th thin part 74 are each formed in the sheet form thinner than another part.

  The third thin portion 73 and the fourth thin portion 74 connect the second partition array portion 420, the second fitting convex array portion 520, and the second fitting concave array portion 620. In the present embodiment, the third thin portion 73 is a portion connecting the second partition array portion 420 and the second fitting convex array portion 520, and the fourth thin portion 74 is the second fitting convex array portion 520. And the second fitting concave array portion 620.

  The 1st thin part 71, the 2nd thin part 72, the 3rd thin part 73, and the 4th thin part 74 are flexible parts rather than another part by being formed thinner than another part. Therefore, the first thin portion 71, the second thin portion 72, the third thin portion 73, and the fourth thin portion 74 can be folded back along the axial direction.

  In the present embodiment, the first thin portion 71 and the third thin portion 73 so that each of the first thin portion 71 and the third thin portion 73 is easily folded back with the inner peripheral surface side inward at a predetermined position. Folds 711 and 731 along the axial direction are formed in a part of each of 73. The fold line 711 of the first thin part 71 and the crease line 731 of the third thin part 73 are parts where ridge lines along the axial direction are formed on the outer surfaces.

  Furthermore, in the present embodiment, the second thin portion 72 and the fourth thin portion are arranged so that each of the second thin portion 72 and the fourth thin portion 74 is easily folded with the outer peripheral surface side inward at a predetermined position. Creases 721 and 741 along the axial direction are formed in a part of each portion 74. The fold line 721 of the second thin part 72 and the crease line 741 of the fourth thin part 74 are parts where ridge lines along the axial direction are formed on the inner side surfaces, respectively.

<Hinge part>
The hinge part 430 is a part in which a plurality of pairs of opposing wall parts 43 are formed side by side along the axial direction. Each of the pair of opposing wall portions 43 is a portion that is formed to face each other at a third position in the circumferential direction, and that forms a recess by partitioning each raised portion 2 from the outer peripheral surface to the depth of the groove portion 3.

  The hinge part 430 is formed in a groove shape along the axial direction. In the corrugated tube 1, the part from the hinge part 430 to each of the first thin part 71 and the third thin part 73 on both sides of the hinge part 430 is relative to the bottom part of the groove formed by the hinge part 430. Pivotable.

  In the example shown in each drawing, the hinge portion 430 is formed only at one position facing the portion between the first partition wall array portion 410 and the second partition wall array portion 420. However, a plurality of hinge portions 430 may be formed.

<Action and effect of corrugated tube>
As shown in FIGS. 1, 2, and 4, the corrugated tube 1 includes a first fitting convex portion 51 and a second fitting convex portion 52 in each of the first fitting concave portion 61 and the second fitting concave portion 62. In the original shape before being fitted, the tube has a relatively large inner diameter. Therefore, it is possible to pass the cable 9 having a thick part other than the part to be protected through the corrugated tube 1 in the original state.

  Furthermore, as FIG. 3 shows, each of the two first thin-walled portions 71 and the second thin-walled portions 72 is folded at folds 711 and 721, and each of the first fitting convex portions 51 is each of the first fitting concave portions 61. It is inserted in. Similarly, the two third thin-walled portions 73 and the fourth thin-walled portions 74 are folded back at the folds 731 and 741, and the second fitting convex portions 52 are fitted into the second fitting concave portions 62.

  By fitting the fitting convex portions 51 and 52 into the fitting concave portions 61 and 62, the corrugated tube 1 has a relatively large inner diameter to a tubular inner diameter suitable for the thickness of the portion to be protected of the cable 9. become. Moreover, the fitting structure of each of the fitting convex portions 51 and 52 and the fitting concave portions 61 and 62 constitutes a lock structure that holds the corrugated tube 1 in a tubular shape thinner than the original state.

  Therefore, the corrugated tube 1 can pass the cable 9 having a thick part other than the part to be protected. Furthermore, the corrugated tube 1 is formed in a tubular shape having no cut in the circumferential direction. Therefore, even if the fitting convex portions 51 and 52 and the fitting concave portions 61 and 62 are partially disengaged, the cable 9 can be prevented from being exposed to the outside and protruding.

  Further, the corrugated tube 1 has a structure for reducing the inner diameter thereof, and includes a set of a first fitting convex arrangement portion 510, a first fitting concave arrangement portion 610, a first thin portion 71, and a second thin portion 72, It has a second fitting convex arrangement part 520, a second fitting concave arrangement part 620, a third thin part 73 and a fourth thin part 74. Since the corrugated tube 1 has these two sets of structures, the degree of reduction of the inner diameter of the corrugated tube 1 can be further increased, and the cable 9 having a thicker portion can be passed through the corrugated tube 1.

<Application example>
The corrugated tube 1 includes a first fitting convex arrangement portion 510, a first fitting concave arrangement portion 610, a first thin portion 71 and a second thin portion 72, a second fitting convex arrangement portion 520, and a second fitting. It is also conceivable that one of the set of the concave / convex array portion 620, the third thin portion 73, and the fourth thin portion 74 is not provided.

  Moreover, in the corrugated tube 1, it is also conceivable that the positional relationship between the first fitting convex arrangement part 510 and the first fitting concave arrangement part 610 is reversed. Similarly, it is also conceivable that the positional relationship between the second fitting convex array part 520 and the second fitting concave array part 620 is reversed.

  However, when the 1st fitting recessed arrangement part 610 is connected with the 1st partition arrangement | positioning part 410 via the 1st thin part 71, each convex-shaped part which each 1st fitting recessed part 61 comprises in the inner peripheral surface side However, it is necessary to be formed in the width | variety and height which can be fitted in the hollow formed in the internal peripheral surface side of the protruding part 2. FIG. Similarly, when the 2nd fitting recessed arrangement part 620 is connected with the 2nd partition arrangement part 420 via the 3rd thin part 73, the convex part which each 2nd fitting recessed part 62 comprises in the inner peripheral surface side Each of them needs to be formed with a width and height that can be fitted into a recess formed on the inner peripheral surface side of the raised portion 2.

  The first (second) fitting convex arrangement part 510 (520), the first (second) fitting concave arrangement part 610 (620), and the two first thin parts 71 (third thin part 73). ) And the second thin-walled portion 72 (fourth thin-walled portion 74) extend across the circumferential direction of each of the raised portions 2 and the groove portions 3 in the axial direction, and are located on both sides in the circumferential direction. Thus, the ridges 2 and the groove portions 3 are enlarged diameter portions that can move to the inner peripheral side or the outer peripheral side so that the ridge portions 2 and the groove portions 3 that face each other are closed. Further, after the cable 9 is inserted into the corrugated tube 1 in the original state, the first fitting convex portion 51 and the second fitting convex portion 52 are respectively replaced with the first fitting concave portion 61 and the second fitting concave portion 62. The wire harness is manufactured by fitting it in and reducing the inner diameter of the corrugated tube 1. The state where the inner diameter of the corrugated tube 1 is reduced may be maintained using a binding tool such as an adhesive tape or a binding band.

<Embodiment 2 and Embodiment 3>
Hereinafter, the corrugated tube 1 </ b> A according to the second embodiment will be described with reference to FIGS. 5 to 9, and the corrugated tube 1 </ b> B according to the third embodiment will be described with reference to FIGS. 10 to 11.

  Corrugated tube 1 </ b> A (1 </ b> B) is a protective tube that covers the periphery of a cable such as an insulated wire or an optical fiber cable in a wire harness mounted on a vehicle such as an automobile, similarly to corrugated tube 1 of the first embodiment.

  The corrugated tube 1A (1B) is formed in a tubular shape having no cut in the circumferential direction. The corrugated tube 1 </ b> A (1 </ b> B) has a bellows structure in which raised portions 2 and groove portions 3 along the circumferential direction are formed alternately in the axial direction on the outer peripheral surface. The axial direction is a direction along the center line of the hollow portion of the corrugated tube 1A (1B).

  The corrugated tube 1 </ b> A (1 </ b> B) has the same configuration as that of the corrugated tube 1 except that the corrugated tube 1 is provided with an enlarged diameter portion 20 </ b> A (20 </ b> B) instead of the enlarged diameter portion. Corrugated tube 1A (1B) is formed of the same material as corrugated tube 1 by the same method.

  Similarly to the corrugated tube 1, a plurality of first partition walls 41 are formed in a line along the axial direction at a first position in the circumferential direction of the corrugated tube 1A (1B). Each first partition wall portion 41 partitions each raised portion 2 aligned in the axial direction from the outer peripheral surface to the depth of the groove portion 3. A plurality of second partition walls 42 are formed in a line along the axial direction at a second position in the circumferential direction of the corrugated tube 1A (1B). Each of the second partition walls 42 partitions each raised portion 2 aligned in the axial direction from the outer peripheral surface to the depth of the groove 3.

  Hereinafter, the enlarged diameter portion 20A (20B) will be described with reference to other components of the corrugated tube 1A (1B) as appropriate. 5 and 7 (10, 11) show the corrugated tube 1A (1B) cut at the position of the raised portion 2. Moreover, the cross-sectional view of FIG. 6 shows the corrugated tube 1A cut at the position of the groove 3.

<Configuration of Expanded Diameter 20A (20B)>
The enlarged diameter portion 20A (20B) is a plate-like member that extends across a part of the circumferential direction of each of the raised portions 2 and each of the groove portions 3 in the axial direction. The enlarged diameter portion 20A (20B) extends from the first position in the circumferential direction of the corrugated tube 1A (1B) to the second position. The enlarged diameter portion 20A (20B) includes a pair of divided enlarged diameter portions 81 and 82 (83 and 84) and hinge portions 91 to 93 (94 to 96). The pair of divided enlarged diameter portions 81 and 82 (83 and 84) and the hinge portions 91 to 93 (94 to 96) are moved from the first position in the circumferential direction of the corrugated tube 1A (1B) to the second position. Thus, the hinge portion 91 (94), the divided enlarged portion 81 (83), the hinge 92 (95), the divided enlarged portion 82 (84), and the hinge portion 93 (96) are formed in this order.

  A pair of division | segmentation enlarged diameter parts 81 and 82 (83, 84) are a pair of plate-shaped members each extended along the axial direction. The cross section orthogonal to each axial center direction of a pair of division | segmentation enlarged diameter parts 81 and 82 (83, 84) is formed in the arc shape. Thereby, a pair of division | segmentation enlarged diameter part 81,82 (83,84) is bend | folded by the bending line along the axial direction in the center part of the circumferential direction of enlarged diameter part 20A (20B) so that it may mention later. In a folded state, it forms a shape that curves along the inner peripheral side (outer peripheral side) of the raised portion 2 and the groove portion 3. Moreover, the length of the circumferential direction of a pair of division | segmentation enlarged diameter parts 81 and 82 (83, 84) is substantially equal mutually.

  In the first position, the hinge portion 91 has each end on the inner peripheral side of each raised portion 2 and each groove portion 3, more specifically, each first partition wall portion 41 and each groove portion 3 that partitions each raised portion 2. In addition to being connected to each end on the inner peripheral side, it is connected to one end of the divided enlarged diameter portion 81 and extends along the axial direction. Moreover, the hinge part 94 is each edge part of the outer peripheral side of each bulge part 2 in a 1st position, More specifically, each edge part of the outer peripheral side of each 1st partition part 41 which partitions off each bulge part 2 While connecting, it connects to the end of the division | segmentation enlarged diameter part 83, and is extended along the axial direction. The divided enlarged diameter portion 81 (83) can be bent by the hinge portion 91 (94) so that the other end of the divided enlarged diameter portion 81 (83) is displaced with respect to each raised portion 2 and each groove portion 3. That is, the divided enlarged diameter portion 81 (83) can be bent along a line along the axial direction at the first position.

  In the second position, the hinge portion 93 is provided at each end portion on the inner peripheral side of each raised portion 2 and each groove portion 3, more specifically, each second partition wall portion 42 and each groove portion 3 that partitions each raised portion 2. In addition to being connected to each end on the inner peripheral side, it is connected to the other end of the divided enlarged diameter portion 82 and extends along the axial direction. In the second position, the hinge portion 96 is connected to each end portion on the outer peripheral side of each raised portion 2, more specifically, to each end portion on the outer peripheral side of each second partition wall portion 42 that partitions each raised portion 2. In addition, it is connected to the other end of the divided enlarged diameter portion 84 and extends along the axial direction. The divided enlarged diameter portion 82 (84) can be bent at the hinge portion 93 (96) such that one end of the divided enlarged diameter portion 82 (84) is displaced with respect to each raised portion 2 and each groove portion 3. That is, the divided enlarged diameter portion 82 (84) can be bent along a line along the axial direction at the second position.

  The hinge portion 92 (95) connects the other end of the divided enlarged portion 81 (83) and one end of the divided enlarged portion 82 (84) at the central portion in the circumferential direction of the enlarged diameter portion 20A (20B). Extending along the axial direction. In the pair of divided enlarged diameter portions 81 and 82 (83, 84), one end of the divided enlarged diameter portion 81 (83) and the other end of the divided enlarged diameter portion 82 (84) are displaced with respect to the hinge portion 92 (95). The hinge portions 92 (95) are foldably connected to each other as possible. That is, the pair of divided enlarged diameter portions 81 and 82 (83, 84) are connected to each other so as to be bendable along a folding line along the axial direction at the circumferential central portion of the enlarged diameter portion 20A (20B).

  The hinge portions 91 to 93 (94 to 96) are, for example, members that are thinner than the pair of divided enlarged diameter portions 81 and 82 (83 and 84), or can be easily folded at a folding line along the axial direction. It is comprised by the member etc. in which the crease | fold to make was formed.

  In the first state shown in FIGS. 5 and 6 (10), when the enlarged diameter portion 20A (20B) is viewed along the axial direction, the hinge portion 91 (94) and the divided enlarged diameter portion 81 (83). The hinge portion 92 (95), the divided diameter-expanded portion 82 (84), and the hinge portion 93 (96) are sequentially arranged along the circumferential direction. The raised portions 2 and the groove portions 3 that are located on both sides in the circumferential direction of the enlarged diameter portion 20A (20B) and face each other are separated from each other along the circumferential direction.

  In the second state shown in FIG. 7 (11), the pair of divided enlarged diameter portions 81, 82 (83, 84) of the enlarged diameter portion 20A (20B) are folded over via the hinge portion 92. Therefore, it is along the inner peripheral side (outer peripheral side) of the portion of the raised portion 2 and the groove portion 3 on the second partition wall 42 side. The raised portions 2 and the groove portions 3 that are located on both sides in the circumferential direction of the enlarged diameter portion 20A (20B) and face each other are closed to each other.

  In the present specification, a state in which the raised portions 2 and the groove portions 3 that are located on both sides in the circumferential direction of the enlarged diameter portion 20A (20B) and face each other are closed without a gap is illustrated in FIG. As shown, although there are gaps between the raised portions 2 and the groove portions 3, the pair of divided enlarged diameter portions 81 and 82 (83, 84) are the second partition wall portions 42 of the raised portions 2 and the groove portions 3. Both the state of being folded along the inner peripheral side (outer peripheral side) of the portion on the side is referred to as the “closed state” between the raised portions 2 and the groove portions 3. One end of the divided enlarged diameter portion 81 (83) and the other end of the divided enlarged diameter portion 82 (84) are farthest apart in the first state and closest in the second state.

  In the enlarged diameter portion 20B, one end (the other end) of the hinge portion 94 (96) is connected to the outer peripheral side of each first partition wall portion 41 (each second partition wall portion 42). And you may connect to the inner peripheral side of each 1st partition part 41 (each 2nd partition part 42). In this case, the hinge portion 94 (96) in the cross section of the corrugated tube 1B is slightly longer than the length along the radial direction of the first partition wall portion 41 (42), for example. If 94 (96) is formed, the enlarged diameter portion 20B can move to the outer peripheral side of the raised portion 2 and the groove portion 3 by bending the pair of divided enlarged diameter portions 83 and 84 at the hinge portion 95.

<Changes in the shape of the enlarged diameter portion 20A (20B)>
In the enlarged diameter portion 20A (20B), a pair of divided enlarged diameter portions 81, 82 (83, 84) are sequentially arranged along the circumferential direction, and a pair of divided enlarged diameter portions 81, 82. The relative positional relationship between the divided enlarged portion 81 (83) and the divided enlarged portion 82 (84) varies between the second state in which (83, 84) is folded.

  More specifically, the corrugated tube 1 </ b> A (1 </ b> B) has a smaller inner diameter so that the raised portions 2 and the groove portions 3 that face each other with the enlarged diameter portion 20 </ b> A (20 </ b> B) approach each other from the first state. When the tube 1A (1B) is deformed, the pair of divided enlarged diameter portions 81, 82 (83, 84) are bent at the hinge portion 92 (95). As a result, one end of the divided enlarged portion 81 (83) and the other end of the divided enlarged portion 82 (84) approach each other, and the hinge portion 92 (95 of the pair of divided enlarged portions 81, 82 (83, 84). ) Becomes smaller. As a result, one end of the divided enlarged portion 81 (83) and the other end of the divided enlarged portion 82 (84) approach each other so that the pair of divided enlarged portions 81, 82 (83, 84) It will be in the 2nd state folded up along the inner peripheral side (outer peripheral side) of the groove part 3. FIG. Thus, the pair of divided enlarged diameter portions 81, 82 (83, 84) are bent by the hinge portion 92 (95) and moved to the inner peripheral side (outer peripheral side) of the raised portion 2 and the groove portion 3, The raised portions 2 and the groove portions 3 which are located on both sides in the circumferential direction of the enlarged diameter portion 20A (20B) and face each other are brought closer to each other in the closing direction.

  Conversely, from the second state, the corrugated tube 1A (1B) has a larger inner diameter so that the raised portions 2 and the groove portions 3 facing each other across the enlarged diameter portion 20A (20B) are separated from each other. When 1A (1B) is deformed, one end of the divided enlarged portion 81 (83) and the other end of the divided enlarged portion 82 (84) are separated from each other, and a pair of divided enlarged portions 81, 82 (83, 84). The relative positional relationship between the divided enlarged-diameter portion 81 (83) and the divided enlarged-diameter portion 82 (84) changes so that the angle between which the hinge portion 92 (95) is sandwiched increases. Thereby, the enlarged diameter portion 20A (20B) is separated from the one end of the divided enlarged diameter portion 81 (83) and the other end of the divided enlarged diameter portion 82 (84), and the hinge portion 91 (94), the divided enlarged diameter portion. 81 (83), the hinge part 92 (95), the division | segmentation enlarged diameter part 82 (84), and the hinge part 93 (96) will be in the 1st state arranged in order along the circumferential direction.

  As described above, the enlarged diameter portion 20A (20B) is located on both sides in the circumferential direction, and the raised portions 2 and the groove portions 3 facing each other are closed so that the raised portions 2 and the groove portions 3 are closed on the inner circumferential side (outer circumferential side). ). Thereby, the corrugated tube 1A (1B) can be reduced from a tube having a relatively large inner diameter to a tube having an inner diameter suitable for the thickness of the protection target portion of the cable 9.

<Wire harness and its manufacturing method>
With reference to FIG. 9, the wire harness 100 which concerns on embodiment provided with 1 A of corrugated tubes, and its manufacturing method are demonstrated.

  The wire harness 100 is an adhesive tape that is closed when the cable (“at least one electric wire”) 9 and the cable 9 are inserted and the enlarged diameter portion 20 </ b> A moves to the inner peripheral side of the raised portion 2 and the groove portion 3. A corrugated tube 1A wound around T on the outer peripheral surface is provided.

  In the manufacture of the wire harness 100, first, the diameter-enlarged portion 20A of the corrugated tube 1A is expanded so as to be in the first state, and the raised portions 2 facing each other located on both sides in the circumferential direction of the diameter-enlarged portion 20A and In a state where the groove portions 3 are opened, the cable 9 previously connected to the connector 150 is inserted into the corrugated tube 1A from the connector 150 side.

  Next, when the ridges 2 and the grooves 3 facing each other are closed by moving the enlarged diameter portion 20A to the inner peripheral side of the ridges 2 and the grooves 3, the enlarged diameter portions 20A are brought into the second state. Become.

  When the adhesive tape T is wound around the outer periphery of the corrugated tube 1A with the raised portions 2 and the groove portions 3 facing each other closed, the corrugated tube 1A has the raised portions 2 and the groove portions 3 facing each other. They are kept closed. Thereby, the wire harness 100 is manufactured.

  In the manufacture of the wire harness provided with the corrugated tube 1B, the enlarged diameter portion 20B moves to the outer peripheral side of the raised portion 2 and the groove portion 3 in a state where the cable 9 is inserted through the corrugated tube 1B, and the raised portions facing each other. The adhesive tape T is wound around the outer peripheral surface of the corrugated tube 1B with the portions 2 and the grooves 3 closed.

  In addition, by using another binding tool such as a binding band instead of the adhesive tape T, the raised portions 2 and the groove portions 3 of the corrugated tube 1A (1B) facing each other are maintained in a closed state. Also good.

<Embodiment 4>
Hereinafter, the corrugated tube 1C according to the fourth embodiment will be described with reference to FIGS.

  Corrugated tube 1C is a protective tube that covers the periphery of a cable such as an insulated wire or an optical fiber cable in a wire harness mounted on a vehicle such as an automobile, similarly to corrugated tube 1A of the second embodiment.

  The corrugated tube 1C is configured in the same manner as the corrugated tube 1A except that the corrugated tube 1A is provided with an enlarged diameter portion 20C instead of the enlarged diameter portion 20A. For this reason, below, diameter-enlarged part 20C is demonstrated, gathering drawings, and description is abbreviate | omitted about another component. FIG. 13 shows that the corrugated tube 1C is the second as a result of the ridges 2 and the grooves 3 facing each other across the enlarged diameter portion 20C of the corrugated tube 1C in the first state shown in FIG. It is a longitudinal cross-sectional view of the vicinity part of the enlarged diameter part 20C of 1 C of corrugated tubes when it will be in this state.

  As shown in FIG. 12, the enlarged-diameter portion 20C is the same as the enlarged-diameter portion 20A except that it includes a pair of divided enlarged-diameter portions 85, 86 instead of the pair of divided enlarged-diameter portions 81, 82. It has a configuration. That is, the enlarged diameter portion 20 </ b> C includes hinge portions 91 to 93 and a pair of divided enlarged diameter portions 85 and 86.

  A pair of division | segmentation enlarged diameter parts 85 and 86 are provided with the uneven | corrugated | grooved part according to the uneven | corrugated shape of each inner peripheral surface of each of the protruding part 2 and each groove part 3 in the state mutually folded by the hinge part 92. FIG. More specifically, fitting convex portions 121 and fitting concave portions 122 along the circumferential direction are alternately formed in the axial direction on the outer peripheral surface in the first state of the divided enlarged diameter portion 85. Yes. Thereby, the division | segmentation enlarged diameter part 85 has a bellows structure. In order to have a bellows structure, the fitting convex part 121 forms a dent on the inner surface, and the fitting concave part 122 is formed in a convex shape on the inner surface.

  In addition, on the outer peripheral surface of the divided enlarged diameter portion 86 in the first state, fitting concave portions 123 and fitting convex portions 124 are formed alternately in the axial direction along the circumferential direction. Thereby, the division | segmentation enlarged diameter part 86 has a bellows structure. In order to have a bellows structure, the fitting recess 123 is formed in a convex shape on the inner surface, and the fitting protrusion 124 forms a recess on the inner surface.

  As shown in FIG. 13, in the second state, the pair of divided enlarged diameter portions 85 and 86 are folded together by the hinge portion 92 and positioned along the inner peripheral surface of the raised portion 2 and the groove portion 3. . The convex shape of the surface opposite to the concave surface in the fitting concave portion 123 of the divided enlarged diameter portion 86 is fitted in the concave portion of the inner peripheral surface of the raised portion 2. And the convex shape of the inner peripheral surface of the groove part 3 is fitted in the dent of the surface on the opposite side to the convex surface of the fitting convex part 124 of the division | segmentation enlarged diameter part 86. FIG.

  A divided enlarged portion 85 is located along the divided enlarged portion 86 on the inner periphery side of the divided enlarged portion 86. The convex shape of the outer surface of the fitting convex portion 121 of the divided enlarged diameter portion 85 is fitted into the concave shape of the fitting concave portion 123 of the divided enlarged diameter portion 86. Further, the concave shape of the fitting concave portion 122 of the divided enlarged diameter portion 85 is fitted with the convex shape of the surface opposite to the concave surface of the fitting concave portion 122 of the divided enlarged diameter portion 86.

  Thus, in the second state, if the divided enlarged portion 86 is fitted to each raised portion 2 and each groove portion 3 and the divided enlarged portion 85 is further fitted to the divided enlarged portion 86, the divided enlarged portion is expanded. Even if the flexibility of the corrugated tube 1C is improved by providing the bellows structure in the portion 85 and the divided enlarged diameter portion 86, the decrease in the inner diameter of the corrugated tube 1C can be suppressed.

  The corrugated tube 1C is a pair of divided enlarged diameters that are folded along the outer peripheral sides of the raised portions 2 and the groove portions 3 in the same manner as the pair of divided enlarged diameter portions 83 and 84 (FIG. 11) of the corrugated tube 1B. May be provided. In this case, the pair of divided enlarged diameter portions only need to have an uneven portion corresponding to the uneven shape of the outer peripheral surface of each of the raised portions 2 and each of the groove portions 3 in a state of being folded on each other.

  The pair of divided enlarged diameter portions 81, 82 (83, 84) (85, 86) of Embodiments 2 to 4 described above were formed in an arc shape in a cross section orthogonal to the axial direction. It does not have to be arcuate. Moreover, in Embodiment 1-4, although the hinge part 430 was formed so that the internal diameter of a corrugated tube could be expanded easily, the hinge part 430 does not need to be formed. Moreover, each 1st partition part 41 and 2nd partition part 42 which partition each protruding part 2 do not need to be formed. In this case, the end portion in the circumferential direction of the enlarged diameter portion is connected to each of the end portions on the inner peripheral side of each groove portion 3 in the first, second, and fourth embodiments. It is connected to the outer peripheral end of the part 2.

  According to the corrugated tubes 1, 1 </ b> A to 3 </ b> C according to the first to fourth embodiments as described above, the enlarged diameter portions are positioned on both sides in the circumferential direction so that the raised portions 2 and the groove portions 3 facing each other are closed. Furthermore, it can move to the inner peripheral side or the outer peripheral side of the raised portion 2 and the groove portion 3. Accordingly, the corrugated tubes 1, 1 </ b> A to 3 </ b> C are tubular with a relatively large inner diameter in the original shape before the enlarged diameter portion moves, and the corrugated tube 1 in the original shape with the cable 9 having a thick portion other than the portion to be protected. It is possible to pass through 1A to 3C. Further, the enlarged diameter portion moves to the inner peripheral side or the outer peripheral side of the raised portion 2 and the groove portion 3 and the raised portions 2 and the groove portions 3 on both sides in the circumferential direction of the enlarged diameter portion are closed, whereby the corrugated tubes 1, 1 </ b> A to. 3C changes from a tube having a relatively large inner diameter to a tube having a smaller inner diameter suitable for accommodating the portion to be protected of the cable 9. Further, the corrugated tubes 1, 1 </ b> A to 3 </ b> C are formed in a tubular shape having no cut in the circumferential direction. Thereby, even when a diameter expansion part returns to the state before a movement and the corrugated tubes 1, 1A-3C return to the original state, the exposure and protrusion of the accommodated cable 9 can be prevented. In addition, a dedicated jig for passing the cut becomes unnecessary, and processing for forming the cut becomes unnecessary.

  Moreover, according to the corrugated tubes 1A-1C which concern on the above Embodiments 2-4, a pair of division | segmentation enlarged diameter part 81,82 (83,84) (85,86) contained in the enlarged diameter part 20A-20C. However, the ridges 2 and the grooves 3 facing each other approach each other in the closing direction by being bent at a folding line along the axial direction and moving toward the outer peripheral side or inner peripheral side of the ridges 2 and the groove 3. To do. Thereby, the internal diameter of tubular corrugated tube 1A-1C is fluctuate | varied from the comparatively large internal diameter to the smaller internal diameter suitable for accommodation of the protection object part of a cable.

  Further, according to the corrugated tubes 1A to 1C according to Embodiments 2 to 4 as described above, each of the pair of divided enlarged diameter portions is formed in an arc shape, and the pair of divided enlarged diameter portions are hinge portions 92 or It bends along the inner peripheral side or the outer peripheral side of the raised portion 2 and the groove portion 3 in a state of being folded at 95 and folded. Therefore, since the protruding width of the pair of divided enlarged diameter portions from each of the raised portions 2 and each of the groove portions 3 is reduced, it is possible to suppress a decrease in the internal space or the external space (surrounding space) of the corrugated tubes 1A to 1C.

  Moreover, according to the corrugated tube 1C which concerns on the above Embodiment 4, a pair of division | segmentation enlarged diameter parts 85 and 86 are each uneven | corrugated shape of each of the protruding part 2 and each groove part 3 in the state folded over mutually. Corresponding uneven portions are provided. Therefore, it can suppress that the softness | corrugation of a corrugated tube is impaired, suppressing the reduction | decrease of the internal space or external space of 1C of corrugated tubes.

  Moreover, according to the wire harness 100 provided with 1 A of corrugated tubes which concern on Embodiment 1, the corrugated tube 1A which penetrated the cable 9 is moved when the enlarged diameter part 20A moves to the inner peripheral side of the protruding part 2 and the groove part 3. The inner diameter is reduced and the adhesive tape T is fixed in this state. Therefore, the wire harness 100 can be maintained in a state where the inner diameter is small.

  Moreover, according to the manufacturing method of the wire harness 100, 1 A of corrugated tubes are formed in the tubular shape which does not have a cut | interruption in the circumferential direction. Then, the cable 9 connected to the connector 150 is inserted from the connector 150 side into the corrugated tube 1A that is located on both sides in the circumferential direction of the diameter-enlarged portion 20A and that has the raised portions 2 and the groove portions 3 facing each other. The And the said protruding parts 2 and the groove parts 3 are closed by the movement of 20 A of enlarged diameter parts, and the closed state is maintained. Therefore, even when the connector 150 is connected to the cable 9 prior to housing the cable 9 in the corrugated tube 1A, it is possible to easily manufacture the wire harness 100 that can prevent the housed cable 9 from being exposed to the outside and protruding. .

  The corrugated tube according to the present invention can be freely combined with the above-described embodiments and application examples within the scope of the invention described in each claim, or can be modified as appropriate. It is also possible to configure by omitting a part.

DESCRIPTION OF SYMBOLS 100 Wire harness 1,1A, 1B, 1C Corrugated tube 20A, 20B, 20C Expanded part 2 Raised part 3 Groove part 41 First partition part 410 First partition part arrangement part 42 Second partition part 420 Second partition part arrangement part 43 Opposing wall portion 430 Hinge portion 51 First fitting convex portion 510 First fitting convex arrangement portion 52 Second fitting convex portion 520 Second fitting convex arrangement portion 61 First fitting concave portion 610 First fitting concave arrangement portion 62 2nd fitting recessed part 620 2nd fitting recessed arrangement part 71 1st thin part 711,721,731,741 Fold 72 72 2nd thin part 73 3rd thin part 74 4th thin part 81-86 Division | segmentation enlarged diameter part 91 ~ 96 Hinge part 9 Cable (electric wire)
150 connector T adhesive tape

Claims (8)

A corrugated tube having a bellows structure that is formed in a tubular shape without a cut in the circumferential direction, and in which the ridges and grooves along the circumferential direction are formed alternately in the axial direction on the outer circumferential surface,
Each of the raised portions and a part of each groove portion in the circumferential direction extend across the axial direction so that the raised portions and the groove portions that are located on both sides in the circumferential direction and face each other are closed. A corrugated tube comprising an enlarged-diameter portion movable to the inner peripheral side or the outer peripheral side of the raised portion and the groove portion. The corrugated tube according to claim 1,
A first partition arrangement in which a plurality of first partition portions that partition each of the raised portions from an outer peripheral surface to a depth of the groove portion at a first position in the circumferential direction are formed in a line along the axial direction. And
A second partition arrangement in which a plurality of second partition portions that partition each of the raised portions from the outer peripheral surface to the depth of the groove portion at a second position in the circumferential direction are formed in a line along the axial direction. And
Further comprising
The expanded diameter portion is
A plurality of fitting protrusions protruding toward the outer peripheral surface at positions between the first partition walls and the second partition walls are portions formed in a line along the axial direction. A mating convex array,
A plurality of fitting recesses that are recessed toward the inner peripheral surface at positions between each of the first partition walls and the second partition walls and that can be fitted with the fitting protrusions are provided in the axial direction. A fitting concave array portion that is a portion formed in a line along the line;
It is formed along the axial direction with a thickness smaller than other parts, and one of the first partition array portion and the second partition array portion, the fitting convex array portion, and the fitting concave array portion. Two thin wall portions that can be folded back along the axial direction,
Having a corrugated tube. The corrugated tube according to claim 2,
A corrugated tube having two sets of the fitting convex arrangement portion, the fitting concave arrangement portion, and the two thin wall portions between the first partition arrangement portion and the second partition arrangement portion. . The corrugated tube according to claim 1,
The expanded diameter portion is
Including a pair of divided enlarged diameter portions connected to bendable along a folding line along the axial direction in the central portion in the circumferential direction;
The pair of divided enlarged diameter portions is
The raised portions and the groove portions that are located on both sides in the circumferential direction of the enlarged diameter portion and are opposed to each other by being bent at the bending line and moving to the outer peripheral side or the inner peripheral side of the raised portion and the groove portion. A corrugated tube that approaches in the closing direction. The corrugated tube according to claim 4,
The pair of split diameter-expanded portions are formed to be curved along the inner peripheral side or the outer peripheral side of the raised portion and the groove portion in a state where the pair of split enlarged diameter portions are folded and folded along the folding line. A corrugated tube in which a cross section perpendicular to the axial direction of each of the enlarged diameter portions is formed in an arc shape. The corrugated tube according to claim 5,
The pair of divided enlarged diameter portions are corrugated tubes each having a concavo-convex portion corresponding to the concavo-convex shape of the outer peripheral surface or the inner peripheral surface of each of the raised portions and each of the groove portions in a folded state. Electric wires,
The said electric wire was inserted, and the said enlarged diameter part was fixed by the binding tool in the closed state by moving to the inner peripheral side or outer peripheral side of the said protruding part and the said groove part, The Claim 1 to Claim 4 The corrugated tube according to any one of claims 6 and
A wire harness comprising: The said enlarged diameter part of the corrugated tube as described in any one of Claims 1-6 was expanded, and the said protruding parts and the said groove parts which were located in the circumferential direction both sides and mutually opposed were opened. In the state, inserting at least one electric wire connected to the connector from the connector side into the corrugated tube;
Closing the ridges and the groove portions facing each other by moving the enlarged diameter portion to the inner peripheral side or the outer peripheral side of the ridge portion and the groove portion;
Maintaining the corrugated tube in a state where the ridges facing each other and the grooves are closed; and
A method for manufacturing a wire harness.

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