WO2013179511A1 - Slit-forming jig and corrugated tube with lock - Google Patents

Slit-forming jig and corrugated tube with lock Download PDF

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Publication number
WO2013179511A1
WO2013179511A1 PCT/JP2012/078475 JP2012078475W WO2013179511A1 WO 2013179511 A1 WO2013179511 A1 WO 2013179511A1 JP 2012078475 W JP2012078475 W JP 2012078475W WO 2013179511 A1 WO2013179511 A1 WO 2013179511A1
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WO
WIPO (PCT)
Prior art keywords
lock
corrugated tube
groove
slit
forming jig
Prior art date
Application number
PCT/JP2012/078475
Other languages
French (fr)
Japanese (ja)
Inventor
和紀 中川
Original Assignee
住友電装株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友電装株式会社 filed Critical 住友電装株式会社
Publication of WO2013179511A1 publication Critical patent/WO2013179511A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0468—Corrugated

Definitions

  • the present invention relates to a technique for forming a slit in a corrugated tube.
  • Corrugated tubes are known as members for protecting wire harnesses and the like.
  • Patent Documents 1 and 2 disclose techniques related to corrugated tubes.
  • the formation position in the circumferential direction of the slit is determined.
  • the lock structure is damaged or the lock structure does not function properly. Therefore, it is desirable that the formation position is not shifted as much as possible.
  • an object of the present invention is to provide a technique capable of suppressing the displacement of the formation position in the circumferential direction of the slit in the corrugated tube with a lock. To do.
  • the slit forming jig according to the first aspect is a slit forming jig used when forming the slit of the corrugated tube with a lock having a slit along the extending direction, which is formed in a bellows-like cylindrical shape.
  • the corrugated tube with the lock before the slit is formed is provided along the extending direction on the outer surface of the corrugated tube with the lock, and is arranged in this order in the circumferential direction of the corrugated tube with the lock First, second, and third groove portions, and a plurality of fitting projections that are provided between the second and third groove portions on the outer surface of the lock corrugated tube and are arranged along the extending direction.
  • the slit is formed in the bottom of the second groove, and the inner surface of the portion between the first and second grooves in the corrugated tube with a lock extends the extension.
  • a plurality of fitting recesses that are fitted and locked with the plurality of fitting protrusions are formed along the direction, and the slit forming jig passes through the corrugated tube with a lock.
  • a corrugated tube with a lock provided on an inner surface of the insertion space, extending along the insertion direction of the corrugated tube with a lock, and fitted into the first groove, and provided on an inner surface of the insertion space.
  • the lock includes a second protrusion that extends along a tube insertion direction and fits in the second groove, and a cutter that cuts a bottom of the second groove to form the slit in the bottom.
  • the slit forming jig according to the second aspect is the slit forming jig according to the first aspect, wherein the second protrusions do not hit the plurality of fitting protrusions of the corrugated tube with lock. Is fitted into the second groove.
  • a slit forming jig according to a third aspect is the slit forming jig according to any one of the first and second aspects, and the second protrusion does not hit the bottom surface of the second groove part. Thus, the second groove is fitted.
  • a slit forming jig according to a fourth aspect is the slit forming jig according to any one of the first to third aspects, wherein the first protrusion does not hit the bottom surface of the first groove part. Thus, the first groove portion is fitted.
  • a slit forming jig according to a fifth aspect is the slit forming jig according to any one of the first to fourth aspects, provided on an inner surface of the insertion space, and inserting the corrugated tube with a lock.
  • a third protrusion that extends along the direction and fits in the third groove is further provided.
  • the slit forming jig according to the sixth aspect is the slit forming jig according to the fifth aspect, wherein the third protrusions do not hit the plurality of fitting protrusions of the corrugated tube with lock. Is fitted into the third groove.
  • a slit forming jig according to a seventh aspect is the slit forming jig according to any one of the fifth and sixth aspects, wherein the third projecting portion does not hit the bottom surface of the third groove portion. Thus, the third groove is fitted.
  • a slit forming jig according to an eighth aspect is the slit forming jig according to any one of the first to seventh aspects, provided on the inner surface of the insertion space, and inserting the corrugated tube with a lock.
  • a plurality of fourth protrusions extending along the direction, and a portion of the corrugated tube with lock inserted into the insertion space other than a portion where the first to third groove portions are formed. This portion is in contact with the slit forming jig only by the plurality of fourth protrusions.
  • a slit forming jig according to a ninth aspect is the slit forming jig according to the eighth aspect, wherein the plurality of fourth protrusions are formed on the first and second groove portions in the corrugated tube with a lock. It includes a plurality of fifth protrusions that press a portion in the insertion space among the portions between them toward the inner surface of the insertion space.
  • the corrugated tube with a lock according to the tenth aspect is a corrugated tube with a lock in which a slit is formed by using the slit forming jig according to any one of the first to ninth aspects.
  • the bottom part of the 2nd groove part is a cutter. Since it cut
  • the slit when the slit is formed, it is possible to suppress the bottom portion of the second groove portion cut by the cutter from moving to the inner peripheral side. Therefore, it can suppress that the formation position of a slit shifts
  • the third protrusion that fits into the third groove is provided, it is possible to further suppress the corrugated tube with lock inserted into the insertion space from rotating in the circumferential direction. it can. Therefore, it can further suppress that the formation position of the slit in the circumferential direction is shifted.
  • the corrugated tube with a lock can be easily passed through the insertion space. Therefore, workability is improved.
  • the portion in the insertion space among the portions between the first and second grooves in the corrugated tube with the lock is directed toward the inner surface of the insertion space by the plurality of fifth protrusions. Since it is pressed, it can suppress that the bottom part of the 2nd groove part cut
  • FIG. 1 is a perspective view showing a slit forming jig 100 according to an embodiment.
  • the slit forming jig 100 is a jig used when forming the slit of the corrugated tube 10 with a lock having a slit along the extending direction (axial direction), which is formed in a bellows-like cylindrical shape.
  • the corrugated tube 10 with a lock in which slits are formed by the slit forming jig 100 will be described.
  • FIG. 4 is a view showing a cross-sectional structure of the corrugated tube 10 with a lock in the direction of arrows III-III shown in FIG.
  • the corrugated tube 10 with a lock is a member for protecting the wire harness 1 from the outside.
  • the corrugated tube 10 with a lock is a cylindrical member having a bellows structure having one slit 50 along the extending direction (axial direction).
  • the corrugated tube 10 with a lock is formed in a substantially cylindrical shape.
  • rock can arrange
  • the corrugated tube 10 with a lock can be deformed into a closed mouth state in which the corrugated tube 10 with a lock is closed, and the closed mouth state can be maintained.
  • 2 to 4 show the corrugated tube 10 with a lock before being transformed into the closed mouth state.
  • the circumferential direction and the extending direction mean the circumferential direction and the extending direction in the entire corrugated tube 10 with a lock, respectively.
  • the corrugated tube 10 with a lock includes a main body 20 and a lock structure 30. Specifically, the corrugated tube 10 with a lock has each part of the lock structure 30 at a part including both edge parts sandwiching the slit 50 in the circumferential direction.
  • the corrugated tube 10 with a lock is provided with a main body portion 20 having an arcuate sectional view, which is the remaining portion other than the lock structure 30 so as to connect the respective portions of the lock structure 30.
  • the lock structure 30 has a second groove portion 34 and a third groove portion 35 provided along the extending direction on a part of the outer surface in the circumferential direction.
  • a slit 50 is formed at the bottom of the second groove 34 of the lock structure 30.
  • the main body 20 has a shape in which convex valleys 22 extending along the circumferential direction and concave valleys 24 extending along the circumferential direction are provided alternately and continuously in the extending direction. Is formed. That is, the main body 20 has a wave shape (substantially rectangular wave shape) in a cross-sectional view orthogonal to the circumferential direction. The mountain portion 22 and the valley portion 24 extend over the entire circumferential direction of the main body portion 20. And the main-body part 20 is bent in the form which the peak parts 22 located in a line in the extending direction adjoin or separate.
  • the main body 20 has a first groove 26 provided along the extending direction on a part of the outer surface in the circumferential direction.
  • the first groove 26 will be described in detail after the lock structure 30 is described.
  • the lock structure 30 is provided in the corrugated tube 10 with a lock at a male lock portion 32 provided at one end of both ends in the circumferential direction across the slit 50 and at the other end of the both ends.
  • the female lock part 42 is provided.
  • the lock structure 30 is formed to be deformable from a pre-lock configuration to a lock configuration.
  • the form before locking is a form in which the male locking part 32 and the female locking part 42 are arranged in the circumferential direction.
  • the lock form is a form in which the female lock part 42 is put on the outer peripheral part of the male lock part 32 and fitted and locked (see FIG. 5 described later).
  • the corrugated tube 10 with a lock is in a mouth-closed state in the lock form of the lock structure 30. That is, the corrugated tube 10 with a lock is configured not to open in the lock form of the lock structure 30.
  • the male lock portion 32 has a plurality of fitting protrusions 36 arranged along the extending direction.
  • the plurality of fitting protrusions 36 are provided between the second groove portion 34 and the third groove portion 35 on the outer surface of the corrugated tube 10 with lock.
  • 3rd groove part 35 is a part into which the side wall part 45 of the female lock part 42 mentioned later enters.
  • the third groove portion 35 is a portion of the lock structure 30 that is provided at a boundary portion with one end in the circumferential direction of the main body portion 20 and is formed in a shape that is recessed toward the inner peripheral side from the peak portion 22 of the main body portion 20. is there.
  • the third groove portion 35 has a bottom surface on the same circumference of the valley portion 24.
  • the third groove portion 35 is set such that the dimension in the circumferential direction of the bottom surface is larger than at least the thickness dimension of the corrugated tube 10 with a lock.
  • the second groove portion 34 is provided in a boundary portion between the male lock portion 32 and the female lock portion 42 in the corrugated tube 10 with a lock, and is formed in a shape that is recessed on the inner peripheral side from the peak portion 22 of the main body portion 20. Part. A slit 50 is formed at a boundary portion between the bottom of the second groove portion 34 and the female lock portion 42.
  • the fitting protrusion 36 is a portion that protrudes to the outer peripheral side and engages and engages with a fitting recess 44 of a female lock portion 42 described later.
  • the fitting protrusion 36 is continuous from the slit 50 side of the third groove 35 to the third groove 35 side of the second groove 34 and is sandwiched between the second groove 34 and the third groove 35.
  • the projecting dimension of the fitting protrusion 36 is set smaller than the projecting dimension of the mountain portion 22, and the extending direction dimension of the fitting protrusion 36 is set smaller than the extending direction dimension of the mountain portion 22.
  • the portion between the two fitting projections 36 adjacent to each other in the extending direction is an extending portion 38 extending on the same circumference from the trough portion 24.
  • the extending portion 38 is continuous with the bottom surfaces of the second groove portion 34 and the third groove portion 35.
  • the female lock portion 42 is formed between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with a lock.
  • the female lock portion 42 occupies a partial range in the circumferential direction from the other edge portion of the edge portions on both sides of the slit 50 in the corrugated tube 10 with a lock, and covers the male lock portion 32 from the outside.
  • the male lock 32 is fitted and locked.
  • the female lock portion 42 is formed with a plurality of fitting recesses 44 on the inner peripheral side thereof. The plurality of fitting recesses 44 are fitted and locked with the plurality of fitting protrusions 36 included in the male lock portion 32.
  • the fitting recess 44 is formed in a shape that is concave on the inner peripheral side of the corrugated tube 10 with a lock (in other words, convex on the outer peripheral side), and is fitted to the outer peripheral portion of the fitting protrusion 36. That is, the fitting recess 44 is externally fitted to the fitting protrusion 36 in a form in which the fitting protrusion 36 is disposed in its own internal space.
  • the plurality of fitting recesses 44 are provided along the extending direction on the inner surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with lock.
  • a plurality of fitting recesses 44 are provided along the extending direction on the inner surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with a lock, thereby providing a lock.
  • a plurality of protrusions 49 are formed on the outer surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10. The inner surface of the protrusion 49 is a fitting recess 44.
  • the fitting recess 44 is set to have approximately the same dimension as the mountain portion 22 in the extending direction. In the relationship with the fitting projection 36, the fitting recess 44 is set such that the internal space is larger (slightly larger here) than the fitting projection 36 in the extending direction. Preferably, the fitting recess 44 and the fitting protrusion 36 can be fitted with as little gap as possible in the extending direction. The fitting recess 44 is set larger than the fitting protrusion 36 in the circumferential direction.
  • a portion between two projecting portions 49 adjacent to each other in the extending direction is an extending portion 48 extending on the same circumference from the trough portion 24.
  • the extending portion 48 is continuous with the bottom surfaces of the first groove portion 26 and the second groove portion 34.
  • the corrugated tube 10 with a lock is manufactured as follows, for example. First, the melted synthetic resin material is extruded into a cylindrical shape using an extrusion mold. The extruded cylindrical body is sandwiched between a pair of molds 90 (see FIG. 4), and is brought into close contact with the pair of molds 90 by blow molding or vacuum molding, thereby forming a cylindrical shape having irregularities. Thereby, the corrugated tube 10 with a lock
  • the first groove portion 26 is provided at only one location on the side of the female lock portion 42 in the circumferential direction in the main body portion 20.
  • the first groove portion 26 has a bottom surface 27 that is flush with the outer peripheral surface of the valley portion 24 and is a series of groove-shaped portions along the extending direction so as to bisect the mountain portion 22 in the circumferential direction.
  • the first groove portion 26 is formed across the peak portion 22 of the main body portion.
  • the 1st groove part 26 is formed in the edge part of the circumferential direction in the main-body part 20.
  • the first groove portion 26 is continuously formed on the side of the protruding portion 49 and the extending portion 48 of the female lock portion 42.
  • the first groove portion 26 is a portion that does not fit with other portions in the lock configuration, unlike the third groove portion 35 (others, the uneven portion in the lock structure 30) (see FIG. 5).
  • the side wall 45 on the slit 50 side in the circumferential direction in each fitting recess 44 (projection 49) of the female lock portion 42 enters the third groove 35.
  • 1st groove part 26 is formed in the shape which has the side wall part 28 extended along the tangent of the trough part 24 (refer the dashed-dotted line which passes on the side wall part 28 of FIG. 4).
  • the side wall 28 extends along the contact / separation direction of the pair of molds 90 when the corrugated tube 10 with lock is molded (see FIG. 4).
  • the 1st groove part 26 has comprised substantially V shape in the cross sectional view orthogonal to the extending direction.
  • the bottom surface 27 of the first groove portion 26 extends linearly along the extending direction.
  • the corrugated tube 10 with a lock is bent so as to be bent along the linear bottom surface 27 of the first groove portion 26 in the circumferential direction.
  • the bottom face 27 of the 1st groove part 26 may be formed in the flat surface shape which has a width
  • the corrugated tube with lock 10 bends so that the bottom surface 27 having a width is curved in the circumferential direction.
  • the extending portion 48 may be inclined with respect to the circumferential surface along which the trough portion 24 extends to form a corner portion, and the corner portion may form the bottom surface 27 of the first groove portion 26.
  • the valley portion 24 and the extending portion 48 may form a polygonal line shape.
  • the lock structure 30 is deformed into a lock form. That is, the female lock portion 42 is put on the male lock portion 32 while elastically deforming the corrugated tube 10 with a lock so as to reduce the diameter. More specifically, the fitting protrusion 36 is disposed inside the fitting recess 44 so that the side wall 45 on the slit 50 side of the fitting recess 44 enters the third groove 35 and the both are fitted together. .
  • the corrugated tube 10 with the lock is engaged with the outer surface of the side wall portion 45 of the fitting recess 44 facing the mountain portion 22 side of the fitting projection 36 by the force of returning to the pre-locking configuration.
  • the force for returning to the pre-locking form is a force for separating the male lock portion 32 and the female lock portion 42 in the circumferential direction so as to increase the diameter, and the inner surface of the fitting recess 44 and the fitting protrusion 36. It works so that the outer surface of each other abuts against each other. At this time, it is desirable that the inner surface and the outer surface are in surface contact with each other.
  • the male lock portion 32 is pressed against the female lock portion 42 toward the outer peripheral side by a force for expanding the diameter of the corrugated tube 10 with a lock.
  • the first groove portion 26 is formed on the side in the circumferential direction of the female lock portion 42 fitted to the outer peripheral portion of the male lock portion 32, and the groove corresponding to the first groove portion 26 is formed on the side of the male lock portion 32. Not formed.
  • the male lock part 32 is pressed against the female lock part 42 toward the outer peripheral side as described above by the rigidity of the part extending from the one end side part of the main body part 20 to the male lock part 32.
  • the female lock portion 42 follows the male lock portion 32 that is a locking partner and is in a state where the posture can be changed with respect to the main body portion 20 with the bottom surface 27 of the first groove portion 26 as a base point.
  • the male lock portion 32 has an inner periphery as indicated by an arrow 61. Try to move to the side.
  • the female locking part 42 tries to move to the inner peripheral side as indicated by the arrow 62 following the operation of the male locking part 32 in a state of being locked to the male locking part 32. That is, the first groove portion 26 is deformed so that the bottom surface 27 moves toward the outer peripheral side as indicated by an arrow 63 and opens.
  • the female lock portion 42 changes its posture relative to the inner circumferential side relative to the end portion on the first groove portion 26 side in the circumferential direction of the main body portion 20 with the bottom surface 27 of the first groove portion 26 as a base point.
  • rock maintains the state which the female locking part 42 fitted with respect to the outer peripheral part of the male locking part 32 also by the said deformation
  • the female lock portion 42 only in one place on the side of the female lock portion 42 has a bottom surface 27 that is flush with the outer peripheral surface of the valley portion 24 and a series of first groove portions along the extending direction that bisects the mountain portion 22 in the circumferential direction. 26. Therefore, stress acting by bending or twisting is alleviated by bending deformation at the bottom surface 27 of the first groove portion 26 in the main body portion 20.
  • the male lock portion 32 is pressed against the female lock portion 42 toward the outer peripheral side by a force to return to the form before locking in which the male lock portion 32 and the female lock portion 42 are arranged in the circumferential direction.
  • the female lock portion 42 in which the first groove portion 26 is formed on the side in the circumferential direction follows and moves with respect to the male lock portion 32.
  • the 1st groove part 26 is formed in the shape which has the side wall part 28 extended along the tangent of the trough part 24, a pair of metal mold
  • the first groove 26 can be formed at the end in the width direction of the molding surface by moving toward and away.
  • the first groove portion 26 only needs to have a bottom surface that is flush with the outer peripheral surface of the valley portion 24, and is not limited to a substantially V-shaped cross-sectional view having the side wall portion 28.
  • the slit forming jig 100 is, for example, a manual processing jig that has a relatively small external dimension and is used by an operator.
  • the slit forming jig 100 may be a large one that cannot be held by a human hand, or may be used while being fixed to a work table or the like.
  • the outer shape of the slit forming jig 100 is a substantially quadrangular prism.
  • the slit forming jig 100 includes an insertion space 110 through which a lock corrugated tube 10 in which no slit 50 is formed is inserted from one end in the extending direction thereof.
  • the corrugated tube 10 with a lock means the corrugated tube 10 with a lock in which the slit 50 is not formed.
  • the insertion space 110 is substantially cylindrical and penetrates the slit forming jig 100.
  • the corrugated tube 10 with a lock is inserted from one opening 111 in the insertion space 110.
  • the vicinity of the opening 111 is slightly widened.
  • the corrugated tube with lock 10 inserted into the insertion space 110 is taken out from the other opening (not shown) in the insertion space 110.
  • one opening 111 of the insertion space 110 is referred to as “insertion side opening 111”, and the other opening of the insertion space 110 is referred to as “extraction side opening”.
  • the blade portion of the cutter 400 is disposed in the insertion space 110.
  • the bottom portion of the second groove 34 of the corrugated tube 10 with a lock is inserted by the blade portion. It is cut from one end in the extending direction.
  • the slit 50 is formed at the bottom of the second groove portion 34. Corrugated tube 10 with a lock in which is formed can be obtained.
  • the length of the corrugated tube 10 with a lock inserted into the insertion space 110 is the length of the insertion space 110, specifically, the insertion direction of the corrugated tube 10 with a lock in the insertion space 110 (hereinafter referred to as the insertion space 110).
  • the length may be larger or smaller than the length along the “insertion direction”), or may be the same as the length.
  • the slit forming jig 100 has a first member 200 and a second member 300, and has a structure that is divided into two parts along the insertion direction passing through the insertion space 110.
  • the slit forming jig 100 includes the first member 200 such that the combined surface (divided surface) 210 of the first member 200 and the combined surface (divided surface) 310 of the second member 300 overlap with the cutter 400 interposed therebetween. 200 is obtained by combining the second member 300 with the second member 300.
  • Each of the first member 200 and the second member 300 is made of, for example, resin.
  • FIG. 7 is a perspective view showing the first member 200 and the cutter 400.
  • FIG. 8 is an enlarged perspective view showing a part of the second member 300 and the cutter 400.
  • FIG. 9 is a view showing the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube 10 with lock is inserted is viewed from the insertion side opening 111.
  • the inner surface 110a of the insertion space 110 is provided with a first for suppressing the rotation of the corrugated tube with lock 10 inserted in the insertion space 110 in the circumferential direction.
  • a first rotation suppression protrusion 120, a second rotation suppression protrusion 130, and a third rotation suppression protrusion 140 are provided.
  • a plurality of smooth passage projections 150, 160, 170, and 180 are provided on the inner surface 110 a of the insertion space 110 to facilitate passage of the corrugated tube 10 with lock through the insertion space 110.
  • Each of the first rotation suppression projection 120, the second rotation suppression projection 130, the third rotation suppression projection 140, and the plurality of smooth passage projections 150, 160, 170, 180 extends along the insertion direction.
  • the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, the third rotation suppression protrusion 140, and the smooth passage protrusions 150, 160, and 170. , 180 are arranged clockwise in this order.
  • the first rotation suppression protrusion 120 and the two smooth passage protrusions 170 and 180 are provided on the first concave surface 112 for forming the insertion space 110 provided on the combination surface 210 of the first member 200. Yes. Further, the second rotation suppression protrusion 130, the third rotation suppression protrusion 140, and the remaining two smooth passage protrusions 150 and 160 form an insertion space 110 provided on the combination surface 310 of the second member 300. Is provided on the second concave surface 113. A space surrounded by the first concave surface 112 and the second concave surface 113 in a state where the first member 200 and the second member 300 are combined becomes the insertion space 110.
  • the combination surface 210 of the first member 200 includes a first concave surface 112 and an upper flat surface 210a and a lower flat surface 210b sandwiching the first concave surface 112 therebetween.
  • a first fitting projection 250 and a second fitting projection 260 are provided on the upper flat surface 210a, and a third fitting projection 270 is provided on the lower flat surface 210b.
  • the combination surface 310 of the second member 300 includes a second concave surface 113 and an upper flat surface 310a and a lower flat surface 310b that sandwich the second concave surface 113 therebetween.
  • a first fitting recess 350 and a second fitting recess 360 are provided on the upper flat surface 310a, and a third fitting recess 370 is provided on the lower flat surface 310b.
  • the first member 200 and the second member 300 are combined by the three fitting recesses 370 being fitted and locked.
  • the cutter 400 has a rectangular plate shape, for example, and is sandwiched between the upper flat surface 210a of the first member 200 and the upper flat surface 310a of the second member 300.
  • the cutter 400 is provided with a fixing hole 410 and a fixing notch 420.
  • the cutter 400 is fixed to the upper flat surface 210 a of the first member 200 or the lower flat surface 310 a of the second member 300 using the fixing hole 410 and the fixing notch 420.
  • the cutter 400 may be a disk-shaped rotary cutter in which a blade portion is provided on the outer peripheral edge portion.
  • FIG. 10 is an enlarged view showing the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube with lock 10 is inserted is viewed from the insertion side opening 111.
  • the illustration of the second member 300 is omitted.
  • FIG. 11 is a view showing a state in which the bottom of the second groove 34 of the corrugated tube 10 with lock is cut by the cutter 400. In FIG. 11, the second member 300 is not shown.
  • a blade portion 430 One end in the short direction of the rectangular plate-shaped cutter 400 is a blade portion 430.
  • the blade portion 430 of the cutter 400 is inclined with respect to the insertion direction so that a part 430a enters the insertion space 110 and is visible when the insertion space 110 is viewed from the insertion-side opening 111.
  • a part 430 a of the blade portion 430 is an end of the second rotation suppression protrusion 130 on the extraction side opening side in the longitudinal direction (end on the back side when viewed from the insertion side opening 111). It penetrates into the insertion space 110 from nearby.
  • each of the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third rotation suppression protrusion 140 has a substantially triangular cross-sectional shape in a plane perpendicular to the longitudinal direction. ing.
  • the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third rotation suppression protrusion 140 are the first groove 26, the second groove 34, and the third of the corrugated tube 10 with the lock inserted into the insertion space 110.
  • the groove portions 35 are respectively fitted.
  • the corrugated tube 10 with the lock has the first groove portion 26, the second groove portion 34, and the third groove portion 35, and the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third groove 35 of the slit forming jig 100.
  • the slits are inserted into the insertion space 110 of the slit forming jig 100 so as to be fitted to the rotation suppressing protrusions 140, respectively.
  • the first rotation suppression projection 120 abuts against the side wall 28 on the projection 49 side of the first groove 26, and the second rotation suppression projection 130 contacts the side wall 34 a of the second groove 34 on the projection 49 side. Touch. Accordingly, the first rotation suppression protrusion 120 and the second rotation suppression protrusion 130 sandwich the portion between the first groove 26 and the second groove 34 in the corrugated tube 10 with lock, that is, the protrusion 49. It has become.
  • the corrugated tube 10 with the lock inserted into the insertion space 110 has the projection 49 sandwiched between the first rotation restraining projection 120 and the second rotation restraining projection 130 of the slit forming jig 100. Proceed through 110.
  • the corrugated tube 10 with a lock inserted into the insertion space 110 is difficult to rotate in the circumferential direction.
  • the cutter 400 and The protrusion 49 is sandwiched.
  • the first rotation suppression protrusion 120 is adapted to fit with the first groove 26 so as not to hit the bottom surface 27 of the first groove 26.
  • the second rotation suppression protrusion 130 does not contact the plurality of fitting protrusions 36 provided between the second groove part 34 and the third groove part 35 and does not contact the bottom surface of the second groove part 34. It fits into the groove 34.
  • the third rotation suppression protrusion 140 is adapted to be fitted to the third groove 35 so as to come into contact with the side wall 35 a opposite to the fitting protrusion 36 in the third groove 35. Further, the third rotation suppression protrusion 140 is fitted to the third groove 35 so as not to hit the plurality of fitting protrusions 36 and to the bottom of the third groove 35.
  • each of the plurality of smooth passage protrusions 150, 160, 170, 180 on the plane perpendicular to the longitudinal direction is a substantially square shape.
  • the first groove 26, the second groove 34, and the third groove 35 are formed in the portion of the corrugated tube 10 with the lock in the insertion space 110.
  • the portions other than the portions that are present are in contact with the slit forming jig 100 only by the plurality of smooth passage projections 150, 160, 170, 180.
  • Each of the plurality of smooth passage projections 150, 160, 170, and 180 is configured to hit the peak portion 22 of the main body portion 20 of the corrugated tube with lock 10 inserted into the insertion space 110.
  • FIG. 12 is a diagram for explaining the arrangement of the plurality of smooth passage protrusions 150, 160, 170, 180.
  • FIG. 12 shows the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube with lock 10 is inserted is viewed from the insertion side opening 111, as in FIG. 9 described above.
  • FIG. 12 in order to avoid complication of the drawing, reference numerals of elements that are not particularly necessary for the description of the arrangement of the smooth passage protrusions 150, 160, 170, 180 are deleted as much as possible. Unless otherwise specified, the following content is an explanation of the arrangement of the smooth passage projections 150, 160, 170, 180 when viewed from the insertion direction.
  • the arrangement interval in the circumferential direction of the insertion space 110 is the same for the plurality of smooth passage protrusions 150, 160, 170, 180.
  • the passage smoothing projections 150 and 180 are arranged symmetrically with respect to the central axis 110 b of the insertion space 110.
  • the smooth passage protrusions 160 and 170 are, with respect to the first straight line 500 connecting the smooth passage protrusions 150 and 180 and the central axis 110b, the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third. It is located on the opposite side to the rotation suppression protrusion 140.
  • the smooth passage protrusions 160 and 170 are positioned on the opposite side of the first straight line 500 from the protrusion 49 of the corrugated tube 10 with a lock.
  • a second straight line 510 that bisects the angle formed by the passage smoothing protrusions 160 and 170 and the central axis 110 b is perpendicular to the first straight line 500 and is a protrusion of the corrugated tube 10 with a lock inserted into the insertion space 110. 49 through.
  • the two smooth passage protrusions 160, 170 are the first groove portion 26 and the second groove portion in the corrugated tube 10 with a lock. 34, the portion in the insertion space 110, that is, the protrusion 49 in the insertion space 110 is pressed toward the inner surface 110a of the insertion space 110. Thereby, it can suppress that the bottom part of the 2nd groove part 34 cut
  • the two passing smoothing projections 150 and 180 are locked in the direction in which the projection 49 is pressed toward the inner surface 110a of the insertion space 110 and the direction perpendicular to the insertion direction (the extending direction of the first straight line 500).
  • the corrugated tube 10 is prevented from shifting.
  • the corrugated tube 10 with a lock When the corrugated tube 10 with a lock is inserted into the insertion space 110 of the slit forming jig 100 having the above-described structure from one end in the extending direction, the first groove portion 26 and the first groove 26 of the corrugated tube 10 with a lock are inserted. As shown in FIG. 11 described above, the first rotation suppression protrusion 120 and the second rotation suppression protrusion 130 that are fitted in the two groove portions 34 sandwich the protrusion 49 of the corrugated tube 10 with the lock. The bottom part of the two groove part 34 is cut
  • a boundary portion with the projection 49 at the bottom of the second groove 34 is cut by a part 430 a of the blade 430 that has entered the insertion space 110. And if the corrugated tube 10 with a lock
  • the third rotation suppression protrusion 140 is provided in the slit forming jig 100.
  • the third rotation suppression protrusion 140 may not be provided.
  • the first rotation suppression protrusion 120 is fitted to the first groove 26 so as not to contact the bottom surface 27, but this is not necessarily required. Similarly, it is not always necessary to fit the second rotation suppressing protrusion 130 to the second groove 34 so as not to hit the bottom surface thereof. Similarly, it is not always necessary that the third rotation suppression protrusion 140 is fitted to the third groove 35 so as not to contact the bottom surface.
  • the bottom portion of the second groove portion 34 is in a state where the projection 49 of the corrugated tube 10 with lock is sandwiched between the first rotation suppression projection 120 and the second rotation suppression projection 130. It is cut with a cutter 400. Therefore, when forming the slit 50 in the bottom part of the 2nd groove part 34, it can suppress that the corrugated tube 10 with a lock
  • the second rotation suppression protrusion 130 is fitted into the second groove 34 so as not to hit the fitting protrusion 36 of the corrugated tube 10 with lock. Therefore, when the slit 50 is formed in the corrugated tube 10 with a lock, the fitting protrusion 36 can be reliably prevented from being damaged.
  • the second rotation suppression protrusion 130 is fitted to the second groove 34 so as not to contact the bottom surface thereof, and is cut by the cutter 400 when the slit 50 is formed. It is possible to suppress the bottom portion of the second groove portion 34 being moved by being pushed toward the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts
  • the first rotation suppression protrusion 120 is fitted to the first groove 26 so as not to contact the bottom surface 27, so that the first groove is formed when the slit 50 is formed. It is possible to prevent the bottom portion of the second groove portion 34 that is cut by the cutter 400 from being pushed to the inner peripheral side by moving the bottom portion 26 to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts
  • the corrugated with a lock is provided.
  • the corrugated tube 10 with a lock becomes more difficult to rotate in the circumferential direction. Therefore, it can further suppress that the formation position of the slit 50 in the circumferential direction is shifted.
  • the 3rd groove part so that the 3rd rotation suppression projection part 140 may not contact
  • the fitting protrusion 36 By fitting to 35, it is possible to prevent the fitting protrusion 36 from being damaged when the slit 50 is formed.
  • the third rotation suppression protrusion 140 by fitting the third rotation suppression protrusion 140 to the third groove 35 so as not to contact the bottom surface thereof, the bottom of the third groove 35 is pushed to the inner peripheral side when the slit 50 is formed. As a result, it is possible to prevent the bottom portion of the second groove portion 34 cut by the cutter 400 from moving to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts
  • the smooth passage protrusions 160 and 170 press the protrusion 49 in the insertion space 110 of the lock corrugated tube 10 toward the inner surface 110 a of the insertion space 110. Therefore, when the slit 50 is formed, it is possible to prevent the bottom portion of the second groove portion 34 cut by the cutter 400 from moving to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts
  • the side wall portion 34 a on the protruding portion 49 side in the second groove portion 34 (on the second groove portion 34 side in the circumferential direction of the protruding portion 49). Since the side surface) is substantially perpendicular to the circumferential direction, the corrugated tube 10 with the lock is fitted by fitting the second rotation suppressing projection 130 into the second groove 34 so as to contact the side wall 34a.
  • clockwise direction when viewed from the insertion-side opening 111 (hereinafter simply referred to as “clockwise direction”), the locked corrugated tube 10 is difficult to rotate.
  • the side wall 28 on the projection 49 side of the first groove 26 (the side surface on the first groove 26 side in the circumferential direction of the projection 49) is greatly inclined in the clockwise direction with respect to the circumferential direction. Therefore, even if the first rotation restraining projection 120 is fitted in the first groove 26 so as to contact the side wall 28, the locked corrugated tube 10 is counterclockwise when viewed from the insertion side opening 111. It is relatively easy to rotate in the direction of rotation (hereinafter simply referred to as “counterclockwise direction”).
  • the third rotation suppression protrusion 140 when the third rotation suppression protrusion 140 is fitted into the third groove 35, the third rotation suppression protrusion 140 is opposite to the fitting protrusion 36 side in the third groove 35.
  • the side wall portion 35a is in contact with the side wall portion 35a. This makes it difficult for the corrugated tube 10 with a lock to rotate counterclockwise. Therefore, it can suppress that the formation position of the slit 50 shifts

Landscapes

  • Details Of Indoor Wiring (AREA)

Abstract

When a corrugated tube with lock is inserted from one end thereof in the extending direction into the insertion space of a slit-forming jig, a cutter on the slit-forming jig cuts the bottom of the second groove of the corrugated tube with lock from the end thereof in the extending direction, while the first and second projections of the slit-forming jig respectively fitting in the first and second grooves of the corrugated tube with lock clamp the portion between the first and second grooves of the corrugated tube with lock.

Description

スリット形成治具及びロック付コルゲートチューブSlit forming jig and corrugated tube with lock
　本発明は、コルゲートチューブにスリットを形成する技術に関する。 The present invention relates to a technique for forming a slit in a corrugated tube.
　ワイヤーハーネス等を保護するための部材としてコルゲートチューブが知られている。特許文献１及び２にはコルゲートチューブに関する技術が開示されている。 Corrugated tubes are known as members for protecting wire harnesses and the like. Patent Documents 1 and 2 disclose techniques related to corrugated tubes.
特開２００１－２００９５７号公報JP 2001-200957 A 特開２００９－３８９６４号公報JP 2009-38964 A
　特許文献１に記載のコルゲートチューブのように、スリットが形成されたコルゲートチューブが開くことを抑制するためのロック構造が設けられていないコルゲートチューブでは、スリットの周方向の位置はどこであっても問題とならない。 As with the corrugated tube described in Patent Document 1, in the corrugated tube not provided with the lock structure for suppressing the opening of the corrugated tube in which the slit is formed, there is a problem regardless of the circumferential position of the slit. Not.
　これに対して、特許文献２に記載のコルゲートチューブのように、ロック構造を有するロック付コルゲートチューブにおいては、スリットの周方向での形成位置が定められている。ロック付コルゲートチューブにおいて、スリットの周方向での形成位置がずれると、ロック構造が損傷したり、ロック構造が適切に機能しなくなったりするため、当該形成位置はできるだけずれないことが望まれる。 On the other hand, in the corrugated tube with a lock having a lock structure like the corrugated tube described in Patent Document 2, the formation position in the circumferential direction of the slit is determined. In the corrugated tube with a lock, if the formation position in the circumferential direction of the slit is shifted, the lock structure is damaged or the lock structure does not function properly. Therefore, it is desirable that the formation position is not shifted as much as possible.
　そこで、本発明は上述の点に鑑みて成されたものであり、ロック付コルゲートチューブにおいて、スリットの周方向での形成位置がずれることを抑制することが可能な技術を提供することを目的とする。 Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a technique capable of suppressing the displacement of the formation position in the circumferential direction of the slit in the corrugated tube with a lock. To do.
　第１の態様に係るスリット形成治具は、蛇腹構造の筒状に形成され、延在方向に沿うスリットを有するロック付コルゲートチューブの当該スリットを形成する際に使用されるスリット形成治具であって、前記スリットが形成される前の前記ロック付コルゲートチューブは、前記ロック付コルゲートチューブの外面に前記延在方向に沿って設けられ、当該ロック付コルゲートチューブの周方向にこの順で並べられた第１、第２及び第３溝部と、前記ロック付コルゲートチューブの外面において前記第２及び第３溝部の間に設けられ、前記延在方向に沿って並んだ複数の嵌合突起部とを備え、前記第２溝部の底部には前記スリットが形成され、前記ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分の内面には、前記延在方向に沿って並んだ、前記複数の嵌合突起部とそれぞれ嵌合係止する複数の嵌合凹部が形成されており、前記スリット形成治具は、前記ロック付コルゲートチューブが挿入されて通過する挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第１溝部に嵌合する第１突起部と、前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第２溝部に嵌合する第２突起部と、前記第２溝部の底部を切断して当該底部に前記スリットを形成するカッターとを備え、前記ロック付コルゲートチューブが前記延在方向の一端から前記挿入空間に挿入されていくと、当該ロック付コルゲートチューブの前記第１及び第２溝部にそれぞれ嵌合する前記第１及び第２突起部が、当該ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分を挟み込んだ状態で、前記第２溝部の底部が前記延在方向の端から前記カッターによって切断される。 The slit forming jig according to the first aspect is a slit forming jig used when forming the slit of the corrugated tube with a lock having a slit along the extending direction, which is formed in a bellows-like cylindrical shape. The corrugated tube with the lock before the slit is formed is provided along the extending direction on the outer surface of the corrugated tube with the lock, and is arranged in this order in the circumferential direction of the corrugated tube with the lock First, second, and third groove portions, and a plurality of fitting projections that are provided between the second and third groove portions on the outer surface of the lock corrugated tube and are arranged along the extending direction. The slit is formed in the bottom of the second groove, and the inner surface of the portion between the first and second grooves in the corrugated tube with a lock extends the extension. A plurality of fitting recesses that are fitted and locked with the plurality of fitting protrusions are formed along the direction, and the slit forming jig passes through the corrugated tube with a lock. A corrugated tube with a lock provided on an inner surface of the insertion space, extending along the insertion direction of the corrugated tube with a lock, and fitted into the first groove, and provided on an inner surface of the insertion space. The lock includes a second protrusion that extends along a tube insertion direction and fits in the second groove, and a cutter that cuts a bottom of the second groove to form the slit in the bottom. When the attached corrugated tube is inserted into the insertion space from one end in the extending direction, the first and second protrusions that fit into the first and second groove portions of the corrugated tube with the lock, respectively. In the corrugated tube with a lock, with the sandwiched portion between said first and second grooves, the bottom of the second groove is cut by the cutter from the edge of the extending direction.
　第２の態様に係るスリット形成治具は、第１の態様に係るスリット形成治具であって、前記第２突起部は、前記ロック付コルゲートチューブの前記複数の嵌合突起部に当たらないように前記第２溝部に嵌合する。 The slit forming jig according to the second aspect is the slit forming jig according to the first aspect, wherein the second protrusions do not hit the plurality of fitting protrusions of the corrugated tube with lock. Is fitted into the second groove.
　第３の態様に係るスリット形成治具は、第１及び第２の態様のいずれか一つに係るスリット形成治具であって、前記第２突起部は、前記第２溝部の底面に当たらないように当該第２溝部に嵌合する。 A slit forming jig according to a third aspect is the slit forming jig according to any one of the first and second aspects, and the second protrusion does not hit the bottom surface of the second groove part. Thus, the second groove is fitted.
　第４の態様に係るスリット形成治具は、第１乃至第３の態様のいずれか一つに係るスリット形成治具であって、前記第１突起部は、前記第１溝部の底面に当たらないように当該第１溝部に嵌合する。 A slit forming jig according to a fourth aspect is the slit forming jig according to any one of the first to third aspects, wherein the first protrusion does not hit the bottom surface of the first groove part. Thus, the first groove portion is fitted.
　第５の態様に係るスリット形成治具は、第１乃至第４の態様のいずれか一つに係るスリット形成治具であって、前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第３溝部に嵌合する第３突起部をさらに備える。 A slit forming jig according to a fifth aspect is the slit forming jig according to any one of the first to fourth aspects, provided on an inner surface of the insertion space, and inserting the corrugated tube with a lock. A third protrusion that extends along the direction and fits in the third groove is further provided.
　第６の態様に係るスリット形成治具は、第５の態様に係るスリット形成治具であって、前記第３突起部は、前記ロック付コルゲートチューブの前記複数の嵌合突起部に当たらないように前記第３溝部に嵌合する。 The slit forming jig according to the sixth aspect is the slit forming jig according to the fifth aspect, wherein the third protrusions do not hit the plurality of fitting protrusions of the corrugated tube with lock. Is fitted into the third groove.
　第７の態様に係るスリット形成治具は、第５及び第６の態様のいずれか一つに係るスリット形成治具であって、前記第３突起部は、前記第３溝部の底面に当たらないように当該第３溝部に嵌合する。 A slit forming jig according to a seventh aspect is the slit forming jig according to any one of the fifth and sixth aspects, wherein the third projecting portion does not hit the bottom surface of the third groove portion. Thus, the third groove is fitted.
　第８の態様に係るスリット形成治具は、第１乃至第７の態様のいずれか一つに係るスリット形成治具であって、前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在する複数の第４突起部をさらに備え、前記ロック付コルゲートチューブのうち前記挿入空間に挿入されている部分においては、前記第１乃至第３溝部が形成されている部分以外の部分は、前記複数の第４突起部だけで前記スリット形成治具と接触している。 A slit forming jig according to an eighth aspect is the slit forming jig according to any one of the first to seventh aspects, provided on the inner surface of the insertion space, and inserting the corrugated tube with a lock. A plurality of fourth protrusions extending along the direction, and a portion of the corrugated tube with lock inserted into the insertion space other than a portion where the first to third groove portions are formed. This portion is in contact with the slit forming jig only by the plurality of fourth protrusions.
　第９の態様に係るスリット形成治具は、第８の態様に係るスリット形成治具であって、前記複数の第４突起部は、前記ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分のうち前記挿入空間内の部分を、当該挿入空間の内面に向けて押し付ける複数の第５突起部を含む。 A slit forming jig according to a ninth aspect is the slit forming jig according to the eighth aspect, wherein the plurality of fourth protrusions are formed on the first and second groove portions in the corrugated tube with a lock. It includes a plurality of fifth protrusions that press a portion in the insertion space among the portions between them toward the inner surface of the insertion space.
　第１０の態様に係るロック付コルゲートチューブは、第１乃至第９の態様のいずれか一つに係るスリット形成治具が使用されてスリットが形成されたロック付コルゲートチューブである。 The corrugated tube with a lock according to the tenth aspect is a corrugated tube with a lock in which a slit is formed by using the slit forming jig according to any one of the first to ninth aspects.
　第１乃至第１０の態様によれば、ロック付コルゲートチューブにおける、第１及び第２溝部の間の部分が第１及び第２突起部で挟み込まれた状態で、第２溝部の底部がカッターで切断されることから、第２溝部の底部にスリットを形成する際にロック付コルゲートチューブが周方向に回転することを抑制することができる。よって、スリットの周方向での形成位置がずれることを抑制することができる。 According to the 1st thru | or 10th aspect, in the state between the 1st and 2nd groove parts in the corrugated tube with a lock | rock between the 1st and 2nd projection parts, the bottom part of the 2nd groove part is a cutter. Since it cut | disconnects, when forming a slit in the bottom part of a 2nd groove part, it can suppress that a corrugated tube with a lock | rock rotates in the circumferential direction. Therefore, it can suppress that the formation position in the circumferential direction of a slit shifts.
　特に第２及び第６の態様によれば、スリットの形成時に嵌合突起部が損傷することを抑制することができる。 Particularly, according to the second and sixth aspects, it is possible to suppress the fitting protrusion from being damaged when the slit is formed.
　特に第３、第４及び第７の態様によれば、スリットの形成時に、カッターによって切断される第２溝部の底部が内周側に移動することを抑制することができる。よって、スリットの形成位置がずれることを抑制することができる。 Particularly, according to the third, fourth, and seventh aspects, when the slit is formed, it is possible to suppress the bottom portion of the second groove portion cut by the cutter from moving to the inner peripheral side. Therefore, it can suppress that the formation position of a slit shifts | deviates.
　特に第５の態様によれば、第３溝部に嵌合する第３突起部が設けられているため、挿入空間に挿入されたロック付コルゲートチューブが周方向に回転することをさらに抑制することができる。よって、スリットの周方向での形成位置がずれることをさらに抑制することができる。 In particular, according to the fifth aspect, since the third protrusion that fits into the third groove is provided, it is possible to further suppress the corrugated tube with lock inserted into the insertion space from rotating in the circumferential direction. it can. Therefore, it can further suppress that the formation position of the slit in the circumferential direction is shifted.
　特に第８の態様によれば、挿入空間に対してロック付コルゲートチューブを通過させ易くなる。よって、作業性が向上する。 Particularly, according to the eighth aspect, the corrugated tube with a lock can be easily passed through the insertion space. Therefore, workability is improved.
　特に第９の態様によれば、複数の第５突起部によって、ロック付コルゲートチューブにおける、第１及び第２溝部の間の部分のうち挿入空間内の部分が、当該挿入空間の内面に向けて押し付けられるため、スリットの形成時に、カッターによって切断される第２溝部の底部が内周側に移動することを抑制することができる。よって、スリットの形成位置がずれることを抑制することができる。 In particular, according to the ninth aspect, the portion in the insertion space among the portions between the first and second grooves in the corrugated tube with the lock is directed toward the inner surface of the insertion space by the plurality of fifth protrusions. Since it is pressed, it can suppress that the bottom part of the 2nd groove part cut | disconnected by a cutter moves to an inner peripheral side at the time of formation of a slit. Therefore, it can suppress that the formation position of a slit shifts | deviates.
　この発明の目的、特徴、局面、及び利点は、以下の詳細な説明と添付図面とによって、より明白となる。 The objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.
スリット形成治具を示す斜視図である。It is a perspective view which shows a slit formation jig | tool. ロック前形態のロック付コルゲートチューブを示す斜視図である。It is a perspective view which shows the corrugated tube with a lock | rock of the form before a lock | rock. ロック前形態のロック付コルゲートチューブを示す上面図である。It is a top view which shows the corrugated tube with a lock | rock of the form before a lock | rock. ロック前形態のロック付コルゲートチューブの断面構造を示す図である。It is a figure which shows the cross-section of the corrugated tube with a lock | rock of the form before a lock | rock. ロック形態のロック付コルゲートチューブの断面構造を示す図である。It is a figure which shows the cross-section of the corrugated tube with a lock | rock form of a lock | rock form. ロック形態のロック付コルゲートチューブの断面構造を示す図である。It is a figure which shows the cross-section of the corrugated tube with a lock | rock form of a lock | rock form. スリット形成治具の第１部材及びカッターを示す斜視図である。It is a perspective view which shows the 1st member and cutter of a slit formation jig | tool. スリット形成治具の第２部材及びカッターの一部を拡大して示す斜視図である。It is a perspective view which expands and shows a 2nd member of a slit formation jig | tool, and a part of cutter. ロック付コルゲートチューブが挿入されたスリット形成治具を示す図である。It is a figure which shows the slit formation jig | tool with which the corrugated tube with a lock | rock was inserted. ロック付コルゲートチューブが挿入されたスリット形成治具の一部を拡大して示す図である。It is a figure which expands and shows a part of slit formation jig | tool in which the corrugated tube with a lock | rock was inserted. ロック付コルゲートチューブにスリットが形成される様子を示す図である。It is a figure which shows a mode that a slit is formed in a corrugated tube with a lock | rock. ロック付コルゲートチューブが挿入されたスリット形成治具を示す図である。It is a figure which shows the slit formation jig | tool with which the corrugated tube with a lock | rock was inserted.
　図１は実施の形態に係るスリット形成治具１００を示す斜視図である。スリット形成治具１００は、蛇腹構造の筒状に形成され、延在方向（軸方向）に沿ったスリットを有するロック付コルゲートチューブ１０の当該スリットを形成する際に使用される治具である。スリット形成治具１００を使用してロック付コルゲートチューブ１０にスリットを形成することによって、当該ロック付コルゲートチューブ１０の周方向において、スリットの形成位置がずれることを抑制することができる。 FIG. 1 is a perspective view showing a slit forming jig 100 according to an embodiment. The slit forming jig 100 is a jig used when forming the slit of the corrugated tube 10 with a lock having a slit along the extending direction (axial direction), which is formed in a bellows-like cylindrical shape. By forming a slit in the corrugated tube 10 with a lock using the slit forming jig 100, it is possible to prevent the slit formation position from being shifted in the circumferential direction of the corrugated tube 10 with a lock.
　本実施の形態に係るスリット形成治具１００を説明する前に、当該スリット形成治具１００によってスリットが形成されるロック付コルゲートチューブ１０について説明する。 Before describing the slit forming jig 100 according to the present embodiment, the corrugated tube 10 with a lock in which slits are formed by the slit forming jig 100 will be described.
　＜ロック付コルゲートチューブについて＞
　図２，３は、それぞれ、スリット形成治具１００が使用されてスリット５０が形成されたロック付コルゲートチューブ１０の構造を示す斜視図及び上面図である。図４は、図３に示される矢視III－IIIにおけるロック付コルゲートチューブ１０の断面構造を示す図である。ロック付コルゲートチューブ１０は、ワイヤーハーネス１を外部から保護するための部材である。 <About corrugated tube with lock>
2 and 3 are a perspective view and a top view, respectively, showing the structure of the corrugated tube 10 with a lock in which the slit forming jig 100 is used and the slit 50 is formed. FIG. 4 is a view showing a cross-sectional structure of the corrugated tube 10 with a lock in the direction of arrows III-III shown in FIG. The corrugated tube 10 with a lock is a member for protecting the wire harness 1 from the outside.
　図２～４に示されるように、ロック付コルゲートチューブ１０は、延在方向（軸方向）に沿う１本のスリット５０を有する蛇腹構造を有する、筒状に形成された部材である。本実施の形態では、ロック付コルゲートチューブ１０は、略円筒状に形成されている。そして、ロック付コルゲートチューブ１０は、スリット５０を通じて内側にワイヤーハーネス１を配設可能であり、ワイヤーハーネス１を内側に配設した状態で保護する。本ロック付コルゲートチューブ１０は、当該ロック付コルゲートチューブ１０が閉じた口閉じ状態に変形可能であり、かつこの口閉じ状態を維持可能に構成されている。図２～４では、口閉じ状態に変形される前のロック付コルゲートチューブ１０が示されている。以下、単に周方向及び延在方向と言えば、ロック付コルゲートチューブ１０全体における周方向及び延在方向をそれぞれ意味するものとする。 2 to 4, the corrugated tube 10 with a lock is a cylindrical member having a bellows structure having one slit 50 along the extending direction (axial direction). In the present embodiment, the corrugated tube 10 with a lock is formed in a substantially cylindrical shape. And the corrugated tube 10 with a lock | rock can arrange | position the wire harness 1 inside through the slit 50, and protects the wire harness 1 in the state arrange | positioned inside. The corrugated tube 10 with a lock can be deformed into a closed mouth state in which the corrugated tube 10 with a lock is closed, and the closed mouth state can be maintained. 2 to 4 show the corrugated tube 10 with a lock before being transformed into the closed mouth state. Hereinafter, simply speaking the circumferential direction and the extending direction mean the circumferential direction and the extending direction in the entire corrugated tube 10 with a lock, respectively.
　ロック付コルゲートチューブ１０は、本体部２０と、ロック構造３０とを備えている。具体的には、ロック付コルゲートチューブ１０は、周方向においてスリット５０を挟んだ両側の縁部を含む部位にロック構造３０の各部を有している。そして、ロック付コルゲートチューブ１０には、ロック構造３０の各部を連結するようにロック構造３０以外の残りの部分である断面視弧状の本体部２０が設けられている。ロック構造３０は、周方向一部の外面において延在方向に沿って設けられた第２溝部３４及び第３溝部３５を有している。ロック構造３０の第２溝部３４の底部にはスリット５０が形成されている。 The corrugated tube 10 with a lock includes a main body 20 and a lock structure 30. Specifically, the corrugated tube 10 with a lock has each part of the lock structure 30 at a part including both edge parts sandwiching the slit 50 in the circumferential direction. The corrugated tube 10 with a lock is provided with a main body portion 20 having an arcuate sectional view, which is the remaining portion other than the lock structure 30 so as to connect the respective portions of the lock structure 30. The lock structure 30 has a second groove portion 34 and a third groove portion 35 provided along the extending direction on a part of the outer surface in the circumferential direction. A slit 50 is formed at the bottom of the second groove 34 of the lock structure 30.
　本体部２０は、周方向に沿って延在する凸状の山部２２と同じく周方向に沿って延在する凹状の谷部２４とが延在方向に交互に連続して設けられた形状に形成されている。すなわち、本体部２０は、周方向に直交する断面視において、波形状（略矩形波形状）を成している。山部２２及び谷部２４は、本体部２０の周方向全体に亘って延在している。そして、本体部２０は、延在方向に並ぶ山部２２同士が近接又は離間する形態で曲げられる。 The main body 20 has a shape in which convex valleys 22 extending along the circumferential direction and concave valleys 24 extending along the circumferential direction are provided alternately and continuously in the extending direction. Is formed. That is, the main body 20 has a wave shape (substantially rectangular wave shape) in a cross-sectional view orthogonal to the circumferential direction. The mountain portion 22 and the valley portion 24 extend over the entire circumferential direction of the main body portion 20. And the main-body part 20 is bent in the form which the peak parts 22 located in a line in the extending direction adjoin or separate.
　また、本体部２０は、周方向の一部の外面において延在方向に沿って設けられた第１溝部２６を有している。この第１溝部２６については、ロック構造３０を説明した後で詳細に説明する。 Further, the main body 20 has a first groove 26 provided along the extending direction on a part of the outer surface in the circumferential direction. The first groove 26 will be described in detail after the lock structure 30 is described.
　ロック構造３０は、ロック付コルゲートチューブ１０における、スリット５０を挟む周方向の両端部のうちの一方の端部に設けられた雄ロック部３２と、当該両端部のうちの他方の端部に設けられた雌ロック部４２とを有する。ロック構造３０は、ロック前形態からロック形態に変形可能に形成されている。ここで、ロック前形態とは、雄ロック部３２と雌ロック部４２とが周方向に並んだ形態である。また、ロック形態とは、雄ロック部３２の外周部に対して雌ロック部４２が被せられて嵌合係止した形態である（後述の図５参照）。ロック付コルゲートチューブ１０は、ロック構造３０のロック形態で口閉じ状態となる。つまり、ロック付コルゲートチューブ１０は、ロック構造３０のロック形態で開かないようになっている。 The lock structure 30 is provided in the corrugated tube 10 with a lock at a male lock portion 32 provided at one end of both ends in the circumferential direction across the slit 50 and at the other end of the both ends. The female lock part 42 is provided. The lock structure 30 is formed to be deformable from a pre-lock configuration to a lock configuration. Here, the form before locking is a form in which the male locking part 32 and the female locking part 42 are arranged in the circumferential direction. The lock form is a form in which the female lock part 42 is put on the outer peripheral part of the male lock part 32 and fitted and locked (see FIG. 5 described later). The corrugated tube 10 with a lock is in a mouth-closed state in the lock form of the lock structure 30. That is, the corrugated tube 10 with a lock is configured not to open in the lock form of the lock structure 30.
　雄ロック部３２は、延在方向に沿って並ぶ複数の嵌合突起部３６を有している。複数の嵌合突起部３６は、ロック付コルゲートチューブ１０の外面において第２溝部３４と第３溝部３５との間に設けられている。 The male lock portion 32 has a plurality of fitting protrusions 36 arranged along the extending direction. The plurality of fitting protrusions 36 are provided between the second groove portion 34 and the third groove portion 35 on the outer surface of the corrugated tube 10 with lock.
　第３溝部３５は、後述する雌ロック部４２の側壁部４５が入り込む部分である。第３溝部３５は、ロック構造３０における、本体部２０の周方向の一端との境界部分に設けられ、当該本体部２０の山部２２より内周側に凹となる形状に形成された部分である。第３溝部３５は、谷部２４の同周上に底面を有している。第３溝部３５は、底面の周方向における寸法が、少なくともロック付コルゲートチューブ１０の厚さ寸法より大きく設定されている。 3rd groove part 35 is a part into which the side wall part 45 of the female lock part 42 mentioned later enters. The third groove portion 35 is a portion of the lock structure 30 that is provided at a boundary portion with one end in the circumferential direction of the main body portion 20 and is formed in a shape that is recessed toward the inner peripheral side from the peak portion 22 of the main body portion 20. is there. The third groove portion 35 has a bottom surface on the same circumference of the valley portion 24. The third groove portion 35 is set such that the dimension in the circumferential direction of the bottom surface is larger than at least the thickness dimension of the corrugated tube 10 with a lock.
　第２溝部３４は、ロック付コルゲートチューブ１０における、雄ロック部３２と雌ロック部４２との境界部分に設けられ、本体部２０の山部２２より内周側に凹となる形状に形成された部分である。第２溝部３４の底部における、雌ロック部４２との境界部分にはスリット５０が形成されている。 The second groove portion 34 is provided in a boundary portion between the male lock portion 32 and the female lock portion 42 in the corrugated tube 10 with a lock, and is formed in a shape that is recessed on the inner peripheral side from the peak portion 22 of the main body portion 20. Part. A slit 50 is formed at a boundary portion between the bottom of the second groove portion 34 and the female lock portion 42.
　嵌合突起部３６は、後述する雌ロック部４２の嵌合凹部４４に対して嵌合係止する、外周側に凸となった部分である。嵌合突起部３６は、第３溝部３５のスリット５０側から第２溝部３４の第３溝部３５側まで連続し、第２溝部３４と第３溝部３５とで挟まれている。嵌合突起部３６の突出寸法は、山部２２の突出寸法より小さく設定されており、嵌合突起部３６の延在方向寸法は、山部２２の延在方向寸法より小さく設定されている。 The fitting protrusion 36 is a portion that protrudes to the outer peripheral side and engages and engages with a fitting recess 44 of a female lock portion 42 described later. The fitting protrusion 36 is continuous from the slit 50 side of the third groove 35 to the third groove 35 side of the second groove 34 and is sandwiched between the second groove 34 and the third groove 35. The projecting dimension of the fitting protrusion 36 is set smaller than the projecting dimension of the mountain portion 22, and the extending direction dimension of the fitting protrusion 36 is set smaller than the extending direction dimension of the mountain portion 22.
　また、ロック付コルゲートチューブ１０において、延在方向で互いに隣り合う二つの嵌合突起部３６の間の部分は、谷部２４からその同円周上に延出した延出部３８となっている。延出部３８は、第２溝部３４及び第３溝部３５の底面に連続している。 Further, in the corrugated tube 10 with a lock, the portion between the two fitting projections 36 adjacent to each other in the extending direction is an extending portion 38 extending on the same circumference from the trough portion 24. . The extending portion 38 is continuous with the bottom surfaces of the second groove portion 34 and the third groove portion 35.
　雌ロック部４２は、ロック付コルゲートチューブ１０における、第１溝部２６と第２溝部３４との間に形成されている。雌ロック部４２は、ロック付コルゲートチューブ１０における、スリット５０の両側の縁部のうちの他方の縁部から周方向の一部の範囲を占め、雄ロック部３２に対して外側から被せられて雄ロック部３２に嵌合係止する。雌ロック部４２には、その内周側において複数の嵌合凹部４４が形成されている。複数の嵌合凹部４４は、雄ロック部３２が有する複数の嵌合突起部３６とそれぞれ嵌合係止する。 The female lock portion 42 is formed between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with a lock. The female lock portion 42 occupies a partial range in the circumferential direction from the other edge portion of the edge portions on both sides of the slit 50 in the corrugated tube 10 with a lock, and covers the male lock portion 32 from the outside. The male lock 32 is fitted and locked. The female lock portion 42 is formed with a plurality of fitting recesses 44 on the inner peripheral side thereof. The plurality of fitting recesses 44 are fitted and locked with the plurality of fitting protrusions 36 included in the male lock portion 32.
　嵌合凹部４４は、ロック付コルゲートチューブ１０の内周側において凹となる（換言すると外周側において凸となる）形状に形成され、嵌合突起部３６の外周部に対して嵌合される。すなわち、嵌合凹部４４は、自身の内部空間内に嵌合突起部３６が配設される形態で、当該嵌合突起部３６に対して外嵌めされる。複数の嵌合凹部４４は、ロック付コルゲートチューブ１０における、第１溝部２６と第２溝部３４の間の部分の内面において延在方向に沿って設けられている。 The fitting recess 44 is formed in a shape that is concave on the inner peripheral side of the corrugated tube 10 with a lock (in other words, convex on the outer peripheral side), and is fitted to the outer peripheral portion of the fitting protrusion 36. That is, the fitting recess 44 is externally fitted to the fitting protrusion 36 in a form in which the fitting protrusion 36 is disposed in its own internal space. The plurality of fitting recesses 44 are provided along the extending direction on the inner surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with lock.
　本実施の形態では、ロック付コルゲートチューブ１０における、第１溝部２６と第２溝部３４の間の部分の内面において、延在方向に沿って複数の嵌合凹部４４が設けられることによって、ロック付コルゲートチューブ１０における、第１溝部２６と第２溝部３４の間の部分の外面においては複数の突起部４９が形成されている。突起部４９の内面が嵌合凹部４４となっている。 In the present embodiment, a plurality of fitting recesses 44 are provided along the extending direction on the inner surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10 with a lock, thereby providing a lock. A plurality of protrusions 49 are formed on the outer surface of the portion between the first groove portion 26 and the second groove portion 34 in the corrugated tube 10. The inner surface of the protrusion 49 is a fitting recess 44.
　嵌合凹部４４は、延在方向において山部２２と略同寸法に設定されている。嵌合突起部３６との関係では、嵌合凹部４４は、延在方向において内部空間が嵌合突起部３６より大きく（ここでは僅かに大きく）設定されている。好ましくは、嵌合凹部４４と嵌合突起部３６とは、延在方向においてなるべく隙間なく嵌合可能であるとよい。また、嵌合凹部４４は、周方向において、嵌合突起部３６より大きく設定されている。 The fitting recess 44 is set to have approximately the same dimension as the mountain portion 22 in the extending direction. In the relationship with the fitting projection 36, the fitting recess 44 is set such that the internal space is larger (slightly larger here) than the fitting projection 36 in the extending direction. Preferably, the fitting recess 44 and the fitting protrusion 36 can be fitted with as little gap as possible in the extending direction. The fitting recess 44 is set larger than the fitting protrusion 36 in the circumferential direction.
　また、ロック付コルゲートチューブ１０において、延在方向で互いに隣り合う二つの突起部４９の間の部分は、谷部２４からその同円周上に延出した延出部４８となっている。延出部４８は、第１溝部２６及び第２溝部３４の底面に連続している。 Further, in the corrugated tube 10 with a lock, a portion between two projecting portions 49 adjacent to each other in the extending direction is an extending portion 48 extending on the same circumference from the trough portion 24. The extending portion 48 is continuous with the bottom surfaces of the first groove portion 26 and the second groove portion 34.
　＜ロック付コルゲートチューブの製造方法＞
　ロック付コルゲートチューブ１０は、例えば、以下のようにして製造される。まず、溶融させた合成樹脂材料を押出成形用の金型を用いて筒状に押し出す。押し出された軟らかい状態の筒状体を一対の金型９０（図４参照）で挟み込み、ブロー成型又はバキューム成型によって一対の金型９０に密着させることにより、凹凸を有する筒状に形成する。これにより、スリット５０が形成される前のロック付コルゲートチューブ１０が得られる。その後、ロック付コルゲートチューブ１０に対して、後述のスリット形成治具１００を使用してスリット５０を形成することによって、図１～４に示される、ロック構造３０がロック前形態のロック付コルゲートチューブ１０が完成する。 <Method of manufacturing corrugated tube with lock>
The corrugated tube 10 with a lock is manufactured as follows, for example. First, the melted synthetic resin material is extruded into a cylindrical shape using an extrusion mold. The extruded cylindrical body is sandwiched between a pair of molds 90 (see FIG. 4), and is brought into close contact with the pair of molds 90 by blow molding or vacuum molding, thereby forming a cylindrical shape having irregularities. Thereby, the corrugated tube 10 with a lock | rock before the slit 50 is formed is obtained. Thereafter, a slit 50 is formed on the corrugated tube 10 with a lock by using a slit forming jig 100 to be described later, so that the lock structure 30 shown in FIGS. 10 is completed.
　＜第１溝部について＞
　第１溝部２６は、本体部２０のうち、周方向における雌ロック部４２の側方の一箇所のみに設けられている。第１溝部２６は、谷部２４の外周面と面一の底面２７を有し、周方向において山部２２を二分するように延在方向に沿った一連の溝状部分である。すなわち、第１溝部２６は、本体部の山部２２を横切って形成されている。ここでは、第１溝部２６は、本体部２０における周方向の端部に形成されている。言い換えると、第１溝部２６は、雌ロック部４２の突起部４９及び延出部４８の側方に連続して形成されている。 <About the first groove>
The first groove portion 26 is provided at only one location on the side of the female lock portion 42 in the circumferential direction in the main body portion 20. The first groove portion 26 has a bottom surface 27 that is flush with the outer peripheral surface of the valley portion 24 and is a series of groove-shaped portions along the extending direction so as to bisect the mountain portion 22 in the circumferential direction. In other words, the first groove portion 26 is formed across the peak portion 22 of the main body portion. Here, the 1st groove part 26 is formed in the edge part of the circumferential direction in the main-body part 20. As shown in FIG. In other words, the first groove portion 26 is continuously formed on the side of the protruding portion 49 and the extending portion 48 of the female lock portion 42.
　第１溝部２６は、第３溝部３５（その他、ロック構造３０における凹凸形状部分）とは異なり、ロック形態において他の部分と嵌合しない部分である(図５参照)。なお、第３溝部３５には、雌ロック部４２の各嵌合凹部４４（突起部４９）における、周方向のスリット５０側の側壁部４５が入り込む。 The first groove portion 26 is a portion that does not fit with other portions in the lock configuration, unlike the third groove portion 35 (others, the uneven portion in the lock structure 30) (see FIG. 5). In addition, the side wall 45 on the slit 50 side in the circumferential direction in each fitting recess 44 (projection 49) of the female lock portion 42 enters the third groove 35.
　第１溝部２６は、谷部２４の接線に沿って延在する側壁部２８を有する形状に形成されている（図４の側壁部２８上を通る一点鎖線参照）。この側壁部２８は、ロック付コルゲートチューブ１０の金型成型時に一対の金型９０の接離方向に沿って延在している(図４参照)。そして、第１溝部２６は、延在方向に直交する断面視において、略Ｖ字状を成している。 1st groove part 26 is formed in the shape which has the side wall part 28 extended along the tangent of the trough part 24 (refer the dashed-dotted line which passes on the side wall part 28 of FIG. 4). The side wall 28 extends along the contact / separation direction of the pair of molds 90 when the corrugated tube 10 with lock is molded (see FIG. 4). And the 1st groove part 26 has comprised substantially V shape in the cross sectional view orthogonal to the extending direction.
　第１溝部２６の底面２７は、延在方向に沿って線状に延びている。これにより、ロック付コルゲートチューブ１０は、周方向において、第１溝部２６の線状の底面２７に沿って屈曲するように撓む。もっとも、第１溝部２６の底面２７は、周方向に幅を有する平坦面状に形成されていてもよい。この場合、ロック付コルゲートチューブ１０は、周方向において、幅を有する底面２７が湾曲するように撓む。また、延出部４８が、谷部２４が沿う周面に対して傾斜して角部をなすように延在し、その角部が第１溝部２６の底面２７を形成してもよい。すなわち、延在方向に直交する断面視において、谷部２４と延出部４８とが折れ線状を成していても良い。これにより、ロック付コルゲートチューブ１０は、折れ部分である底面２７を基点として変形し易くなると考えられる。 The bottom surface 27 of the first groove portion 26 extends linearly along the extending direction. Thereby, the corrugated tube 10 with a lock is bent so as to be bent along the linear bottom surface 27 of the first groove portion 26 in the circumferential direction. But the bottom face 27 of the 1st groove part 26 may be formed in the flat surface shape which has a width | variety in the circumferential direction. In this case, the corrugated tube with lock 10 bends so that the bottom surface 27 having a width is curved in the circumferential direction. Further, the extending portion 48 may be inclined with respect to the circumferential surface along which the trough portion 24 extends to form a corner portion, and the corner portion may form the bottom surface 27 of the first groove portion 26. That is, in the cross-sectional view orthogonal to the extending direction, the valley portion 24 and the extending portion 48 may form a polygonal line shape. Thereby, it is thought that the corrugated tube 10 with a lock | rock becomes easy to deform | transform using the bottom face 27 which is a broken part as a base point.
　＜ワイヤーハーネスに対する装着＞
　ロック付コルゲートチューブ１０をワイヤーハーネス１に対して装着する際には、まず、ワイヤーハーネス１を、スリット５０を通じてロック付コルゲートチューブ１０の内側に配設する（図４参照）。このとき、ロック構造３０は、ロック前形態に維持されている。 <Mounting to wire harness>
When the corrugated tube 10 with lock is attached to the wire harness 1, first, the wire harness 1 is disposed inside the corrugated tube 10 with lock through the slit 50 (see FIG. 4). At this time, the lock structure 30 is maintained in the pre-lock form.
　ワイヤーハーネス１がロック付コルゲートチューブ１０内に配設された状態で、図５に示されるように、ロック構造３０をロック形態に変形させる。すなわち、ロック付コルゲートチューブ１０を縮径させるようにして弾性変形させつつ、雌ロック部４２を雄ロック部３２に被せる。より具体的には、嵌合凹部４４のスリット５０側の側壁部４５が第３溝部３５に入り込むように、嵌合突起部３６を嵌合凹部４４の内側に配設させて両者を嵌合させる。 In a state where the wire harness 1 is disposed in the corrugated tube 10 with a lock, as shown in FIG. 5, the lock structure 30 is deformed into a lock form. That is, the female lock portion 42 is put on the male lock portion 32 while elastically deforming the corrugated tube 10 with a lock so as to reduce the diameter. More specifically, the fitting protrusion 36 is disposed inside the fitting recess 44 so that the side wall 45 on the slit 50 side of the fitting recess 44 enters the third groove 35 and the both are fitted together. .
　ロック形態では、ロック付コルゲートチューブ１０は、ロック前形態に復帰しようとする力により、嵌合凹部４４の側壁部４５の内面が嵌合突起部３６の山部２２側を向く外面に係止する。すなわち、ロック前形態に復帰しようとする力とは、拡径しようとして雄ロック部３２と雌ロック部４２とが周方向に離間する力であり、嵌合凹部４４の内面と嵌合突起部３６の外面とが互いに当接するように働く。このとき、当該内面と当該外面とは、互いに面接触していることが望ましい。 In the lock configuration, the corrugated tube 10 with the lock is engaged with the outer surface of the side wall portion 45 of the fitting recess 44 facing the mountain portion 22 side of the fitting projection 36 by the force of returning to the pre-locking configuration. . That is, the force for returning to the pre-locking form is a force for separating the male lock portion 32 and the female lock portion 42 in the circumferential direction so as to increase the diameter, and the inner surface of the fitting recess 44 and the fitting protrusion 36. It works so that the outer surface of each other abuts against each other. At this time, it is desirable that the inner surface and the outer surface are in surface contact with each other.
　また、雄ロック部３２は、ロック付コルゲートチューブ１０の拡径しようとする力により、外周側に向けて雌ロック部４２に対して押し付けられている。ここでは、雄ロック部３２の外周部に嵌合する雌ロック部４２の周方向側方に第１溝部２６が形成され、雄ロック部３２の側方には第１溝部２６に相当する溝が形成されていない。このため、雄ロック部３２は、本体部２０の一端側部分から雄ロック部３２に亘る部分の剛性により、上述したように外周側へ向けて雌ロック部４２に対して押し付けられる。一方、雌ロック部４２は、係止相手である雄ロック部３２に追従して、第１溝部２６の底面２７を基点として本体部２０に対して姿勢変更し得る状態にある。 Further, the male lock portion 32 is pressed against the female lock portion 42 toward the outer peripheral side by a force for expanding the diameter of the corrugated tube 10 with a lock. Here, the first groove portion 26 is formed on the side in the circumferential direction of the female lock portion 42 fitted to the outer peripheral portion of the male lock portion 32, and the groove corresponding to the first groove portion 26 is formed on the side of the male lock portion 32. Not formed. For this reason, the male lock part 32 is pressed against the female lock part 42 toward the outer peripheral side as described above by the rigidity of the part extending from the one end side part of the main body part 20 to the male lock part 32. On the other hand, the female lock portion 42 follows the male lock portion 32 that is a locking partner and is in a state where the posture can be changed with respect to the main body portion 20 with the bottom surface 27 of the first groove portion 26 as a base point.
　以上の作用により、ロック構造３０は、ロック形態に維持されている。 Due to the above action, the lock structure 30 is maintained in the lock form.
　＜変形時の動作＞
　ロック付コルゲートチューブ１０が、図６の矢印６０のように、ロック構造３０の両側方の部分が近接するように変形する場合には、雄ロック部３２は、矢印６１に示されるように内周側に移動しようとする。一方、雌ロック部４２は、雄ロック部３２に対して係止した状態で、当該雄ロック部３２の動作に追従して矢印６２に示されるように内周側に移動しようとする。すなわち、第１溝部２６は、底面２７が矢印６３に示されるように外周側に向けて移動し、開くように変形する。そして、雌ロック部４２は、本体部２０の周方向における第１溝部２６側の端部に対して、第１溝部２６の底面２７を基点として相対的に内周側に姿勢変更する。これにより、ロック付コルゲートチューブ１０は、上記変形によっても、雌ロック部４２が雄ロック部３２の外周部に対して嵌合した状態に維持される。 <Operation during deformation>
When the corrugated tube 10 with a lock is deformed so that the portions on both sides of the lock structure 30 are close to each other as indicated by an arrow 60 in FIG. 6, the male lock portion 32 has an inner periphery as indicated by an arrow 61. Try to move to the side. On the other hand, the female locking part 42 tries to move to the inner peripheral side as indicated by the arrow 62 following the operation of the male locking part 32 in a state of being locked to the male locking part 32. That is, the first groove portion 26 is deformed so that the bottom surface 27 moves toward the outer peripheral side as indicated by an arrow 63 and opens. The female lock portion 42 changes its posture relative to the inner circumferential side relative to the end portion on the first groove portion 26 side in the circumferential direction of the main body portion 20 with the bottom surface 27 of the first groove portion 26 as a base point. Thereby, the corrugated tube 10 with a lock | rock maintains the state which the female locking part 42 fitted with respect to the outer peripheral part of the male locking part 32 also by the said deformation | transformation.
　以上のように、本実施の形態に係るロック付コルゲートチューブ１０では、周方向に沿って延在する山部２２と谷部２４とが延在方向に交互に連続して設けられた本体部２０が、雌ロック部４２の側方の１箇所にのみ、谷部２４の外周面と面一の底面２７を有するとともに周方向において山部２２を二分する延在方向に沿った一連の第１溝部２６を有する。そのため、曲げ又は捻れ等によって作用する応力が、本体部２０における第１溝部２６の底面２７における曲げ変形によって緩和される。すなわち、周方向において雄ロック部３２と雌ロック部４２とが並んだロック前の形態に復帰しようとする力により、雄ロック部３２が外周側に向けて雌ロック部４２に対して押し当てられるとともに、周方向側方に第１溝部２６が形成された雌ロック部４２が雄ロック部３２に対して係止した状態で追従して動く。その結果、雄ロック部３２と雌ロック部４２とのロック形態をより確実に維持し、ロック付コルゲートチューブ１０が開くことをより効果的に抑制することができる。 As described above, in the corrugated tube 10 with a lock according to the present embodiment, the main body portion 20 in which the crest portions 22 and the trough portions 24 extending along the circumferential direction are alternately and continuously provided in the extending direction. However, only in one place on the side of the female lock portion 42 has a bottom surface 27 that is flush with the outer peripheral surface of the valley portion 24 and a series of first groove portions along the extending direction that bisects the mountain portion 22 in the circumferential direction. 26. Therefore, stress acting by bending or twisting is alleviated by bending deformation at the bottom surface 27 of the first groove portion 26 in the main body portion 20. That is, the male lock portion 32 is pressed against the female lock portion 42 toward the outer peripheral side by a force to return to the form before locking in which the male lock portion 32 and the female lock portion 42 are arranged in the circumferential direction. At the same time, the female lock portion 42 in which the first groove portion 26 is formed on the side in the circumferential direction follows and moves with respect to the male lock portion 32. As a result, the lock form of the male lock part 32 and the female lock part 42 can be maintained more reliably, and the corrugated tube 10 with lock can be more effectively suppressed from opening.
　また、第１溝部２６が谷部２４の接線に沿って延在する側壁部２８を有する形状に形成されているため、金型成型時に一対の金型９０を当該側壁部２８に沿った方向に接離移動させて、成型面のうちの幅方向端部で第１溝部２６を形成できる。これにより、より小径なロック付コルゲートチューブ１０でも第１溝部２６を形成して、ロック付コルゲートチューブ１０の開きを効果的に抑制することができる。 Moreover, since the 1st groove part 26 is formed in the shape which has the side wall part 28 extended along the tangent of the trough part 24, a pair of metal mold | die 90 is made to the direction along the said side wall part 28 at the time of metal mold | die molding. The first groove 26 can be formed at the end in the width direction of the molding surface by moving toward and away. Thereby, even the corrugated tube 10 with a smaller diameter can form the 1st groove part 26, and can suppress the opening of the corrugated tube 10 with a lock | rock effectively.
　なお、第１溝部２６は、谷部２４の外周面と面一の底面を有していればよく、側壁部２８を有する断面視略Ｖ字の形状に限られるものではない。 The first groove portion 26 only needs to have a bottom surface that is flush with the outer peripheral surface of the valley portion 24, and is not limited to a substantially V-shaped cross-sectional view having the side wall portion 28.
　＜スリット形成治具について＞
　次にスリット形成治具１００について説明する。本実施の形態に係るスリット形成治具１００は、例えば、外形寸法が比較的小さく、作業者が手に持って使用する手加工用治具である。なお、スリット形成治具１００は、人の手で持てないような大きなものであっても良いし、スリット形成治具１００を作業台等に固定して使用しても良い。 <About slit forming jig>
Next, the slit forming jig 100 will be described. The slit forming jig 100 according to the present embodiment is, for example, a manual processing jig that has a relatively small external dimension and is used by an operator. The slit forming jig 100 may be a large one that cannot be held by a human hand, or may be used while being fixed to a work table or the like.
　上述の図１に示されるように、スリット形成治具１００の外形は略四角柱である。スリット形成治具１００は、スリット５０が形成されていないロック付コルゲートチューブ１０がその延在方向の一端から挿入されて通過する挿入空間１１０を備えている。以後、単にロック付コルゲートチューブ１０と言えば、スリット５０が形成されていないロック付コルゲートチューブ１０を意味する。 As shown in FIG. 1 described above, the outer shape of the slit forming jig 100 is a substantially quadrangular prism. The slit forming jig 100 includes an insertion space 110 through which a lock corrugated tube 10 in which no slit 50 is formed is inserted from one end in the extending direction thereof. Hereinafter, simply speaking, the corrugated tube 10 with a lock means the corrugated tube 10 with a lock in which the slit 50 is not formed.
　挿入空間１１０は、略円柱状であって、スリット形成治具１００を貫通している。ロック付コルゲートチューブ１０は、挿入空間１１０における一方の開口１１１から挿入される。挿入空間１１０では、ロック付コルゲートチューブ１０を挿入し易くするために、開口１１１付近が少し広くなっている。挿入空間１１０に挿入されたロック付コルゲートチューブ１０は、当該挿入空間１１０における他方の開口（図示せず）から取り出される。以後、挿入空間１１０の一方の開口１１１を「挿入側開口１１１」と呼び、挿入空間１１０の他方の開口を「取り出し側開口」と呼ぶ。 The insertion space 110 is substantially cylindrical and penetrates the slit forming jig 100. The corrugated tube 10 with a lock is inserted from one opening 111 in the insertion space 110. In the insertion space 110, in order to facilitate the insertion of the corrugated tube 10 with a lock, the vicinity of the opening 111 is slightly widened. The corrugated tube with lock 10 inserted into the insertion space 110 is taken out from the other opening (not shown) in the insertion space 110. Hereinafter, one opening 111 of the insertion space 110 is referred to as “insertion side opening 111”, and the other opening of the insertion space 110 is referred to as “extraction side opening”.
　挿入空間１１０内にはカッター４００の刃部が配置されている。スリット形成治具１００では、挿入空間１１０に対してロック付コルゲートチューブ１０がその延在方向の一端から挿入されていくと、当該刃部によって、ロック付コルゲートチューブ１０の第２溝部３４の底部が延在方向の一端から切断されていく。そして、ロック付コルゲートチューブ１０を、挿入空間１１０の挿入側開口１１１から当該挿入空間１１０に挿入していって、当該挿入空間１１０の取り出し側開口から取り出すと、第２溝部３４の底部にスリット５０が形成されたロック付コルゲートチューブ１０が得られるようになっている。つまり、ロック付コルゲートチューブ１０を挿入空間１１０に通過させると、スリット５０が形成されたロック付コルゲートチューブ１０が得られるようになっている。挿入空間１１０に挿入されるロック付コルゲートチューブ１０の長さは、当該挿入空間１１０の長さ、具体的には、当該挿入空間における、ロック付コルゲートチューブ１０の挿入空間１１０に対する挿入方向（以後、単に「挿入方向」と呼ぶ）に沿った長さよりも大きくしても良いし、小さくしても良いし、当該長さと同じであっても良い。 The blade portion of the cutter 400 is disposed in the insertion space 110. In the slit forming jig 100, when the corrugated tube 10 with a lock is inserted into the insertion space 110 from one end in the extending direction, the bottom portion of the second groove 34 of the corrugated tube 10 with a lock is inserted by the blade portion. It is cut from one end in the extending direction. When the corrugated tube 10 with a lock is inserted into the insertion space 110 from the insertion side opening 111 of the insertion space 110 and is taken out from the extraction side opening of the insertion space 110, the slit 50 is formed at the bottom of the second groove portion 34. Corrugated tube 10 with a lock in which is formed can be obtained. That is, when the corrugated tube 10 with a lock is passed through the insertion space 110, the corrugated tube 10 with a lock in which the slit 50 is formed is obtained. The length of the corrugated tube 10 with a lock inserted into the insertion space 110 is the length of the insertion space 110, specifically, the insertion direction of the corrugated tube 10 with a lock in the insertion space 110 (hereinafter referred to as the insertion space 110). The length may be larger or smaller than the length along the “insertion direction”), or may be the same as the length.
　スリット形成治具１００は、第１部材２００及び第２部材３００を有しており、挿入空間１１０を通る挿入方向に沿った面で二分割されたような構造を有している。スリット形成治具１００は、第１部材２００の組み合わせ面（分割面）２１０と第２部材３００の組み合わせ面（分割面）３１０とがそれらの間にカッター４００を挟んで重なり合うように当該第１部材２００と当該第２部材３００とが組み合わされることによって得られるようになっている。第１部材２００及び第２部材３００のそれぞれは、例えば樹脂で形成されている。 The slit forming jig 100 has a first member 200 and a second member 300, and has a structure that is divided into two parts along the insertion direction passing through the insertion space 110. The slit forming jig 100 includes the first member 200 such that the combined surface (divided surface) 210 of the first member 200 and the combined surface (divided surface) 310 of the second member 300 overlap with the cutter 400 interposed therebetween. 200 is obtained by combining the second member 300 with the second member 300. Each of the first member 200 and the second member 300 is made of, for example, resin.
　図７は第１部材２００とカッター４００を示す斜視図である。図８は第２部材３００とカッター４００の一部を拡大して示す斜視図である。図９はロック付コルゲートチューブ１０が挿入されているスリット形成治具１００を挿入側開口１１１から見た際の当該スリット形成治具１００を示す図である。 FIG. 7 is a perspective view showing the first member 200 and the cutter 400. FIG. 8 is an enlarged perspective view showing a part of the second member 300 and the cutter 400. FIG. 9 is a view showing the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube 10 with lock is inserted is viewed from the insertion side opening 111.
　図７～９（特に図９）に示されるように、挿入空間１１０の内面１１０ａには、当該挿入空間１１０に挿入されたロック付コルゲートチューブ１０が周方向に回転することを抑制するための第１回転抑制突起部１２０、第２回転抑制突起部１３０及び第３回転抑制突起部１４０が設けられている。また、挿入空間１１０の内面１１０ａには、当該挿入空間１１０に対してロック付コルゲートチューブ１０を通過させ易くするための複数の通過円滑用突起部１５０，１６０，１７０，１８０が設けられている。第１回転抑制突起部１２０、第２回転抑制突起部１３０、第３回転抑制突起部１４０及び複数の通過円滑用突起部１５０，１６０，１７０，１８０のそれぞれは、挿入方向に沿って延在しており、それらの長さは同一となっている。また、スリット形成治具１００を挿入側開口１１１から見ると、第１回転抑制突起部１２０、第２回転抑制突起部１３０、第３回転抑制突起部１４０及び通過円滑用突起部１５０，１６０，１７０，１８０が、この順で時計回りに配置されている。 As shown in FIGS. 7 to 9 (particularly FIG. 9), the inner surface 110a of the insertion space 110 is provided with a first for suppressing the rotation of the corrugated tube with lock 10 inserted in the insertion space 110 in the circumferential direction. A first rotation suppression protrusion 120, a second rotation suppression protrusion 130, and a third rotation suppression protrusion 140 are provided. A plurality of smooth passage projections 150, 160, 170, and 180 are provided on the inner surface 110 a of the insertion space 110 to facilitate passage of the corrugated tube 10 with lock through the insertion space 110. Each of the first rotation suppression projection 120, the second rotation suppression projection 130, the third rotation suppression projection 140, and the plurality of smooth passage projections 150, 160, 170, 180 extends along the insertion direction. They are the same length. Further, when the slit forming jig 100 is viewed from the insertion side opening 111, the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, the third rotation suppression protrusion 140, and the smooth passage protrusions 150, 160, and 170. , 180 are arranged clockwise in this order.
　第１回転抑制突起部１２０及び二つの通過円滑用突起部１７０，１８０は、第１部材２００の組み合わせ面２１０に設けられた、挿入空間１１０を形成するための第１凹面１１２上に設けられている。また、第２回転抑制突起部１３０、第３回転抑制突起部１４０及び残りの二つの通過円滑用突起部１５０，１６０は、第２部材３００の組み合わせ面３１０に設けられた、挿入空間１１０を形成するための第２凹面１１３上に設けられている。第１部材２００と第２部材３００とが組み合わされた状態での、第１凹面１１２及び第２凹面１１３で囲まれた空間が挿入空間１１０となる。 The first rotation suppression protrusion 120 and the two smooth passage protrusions 170 and 180 are provided on the first concave surface 112 for forming the insertion space 110 provided on the combination surface 210 of the first member 200. Yes. Further, the second rotation suppression protrusion 130, the third rotation suppression protrusion 140, and the remaining two smooth passage protrusions 150 and 160 form an insertion space 110 provided on the combination surface 310 of the second member 300. Is provided on the second concave surface 113. A space surrounded by the first concave surface 112 and the second concave surface 113 in a state where the first member 200 and the second member 300 are combined becomes the insertion space 110.
　第１部材２００の組み合わせ面２１０は、第１凹面１１２と、当該第１凹面１１２を間に挟む上側平坦面２１０ａ及び下側平坦面２１０ｂとで構成されている。上側平坦面２１０ａには第１嵌合突起部２５０及び第２嵌合突起部２６０が設けられ、下側平坦面２１０ｂには第３嵌合突起部２７０が設けられている。 The combination surface 210 of the first member 200 includes a first concave surface 112 and an upper flat surface 210a and a lower flat surface 210b sandwiching the first concave surface 112 therebetween. A first fitting projection 250 and a second fitting projection 260 are provided on the upper flat surface 210a, and a third fitting projection 270 is provided on the lower flat surface 210b.
　第２部材３００の組み合わせ面３１０は、第２凹面１１３と、当該第２凹面１１３を間に挟む上側平坦面３１０ａ及び下側平坦面３１０ｂとで構成されている。上側平坦面３１０ａには第１嵌合凹部３５０及び第２嵌合凹部３６０が設けられており、下側平坦面３１０ｂには第３嵌合凹部３７０が設けられている。第１部材２００の第１嵌合突起部２５０、第２嵌合突起部２６０及び第３嵌合突起部２７０と、第２部材３００の第１嵌合凹部３５０、第２嵌合凹部３６０及び第３嵌合凹部３７０とがそれぞれ嵌合係止することによって、第１部材２００と第２部材３００とが組み合わされる。 The combination surface 310 of the second member 300 includes a second concave surface 113 and an upper flat surface 310a and a lower flat surface 310b that sandwich the second concave surface 113 therebetween. A first fitting recess 350 and a second fitting recess 360 are provided on the upper flat surface 310a, and a third fitting recess 370 is provided on the lower flat surface 310b. The first fitting projection 250, the second fitting projection 260, and the third fitting projection 270 of the first member 200, the first fitting recess 350, the second fitting recess 360, and the second of the second member 300. The first member 200 and the second member 300 are combined by the three fitting recesses 370 being fitted and locked.
　カッター４００は、例えば長方形の板状となっており、第１部材２００の上側平坦面２１０ａと第２部材３００の上側平坦面３１０ａとで挟まれる。カッター４００には、固定用穴４１０及び固定用切り欠き部４２０が設けられている。カッター４００は、固定用穴４１０及び固定用切り欠き部４２０が使用されて、第１部材２００の上側平坦面２１０ａあるいは第２部材３００の下側平坦面３１０ａに固定される。なお、カッター４００は、外周縁部に刃部が設けられた、円盤状の回転式カッターでも良い。 The cutter 400 has a rectangular plate shape, for example, and is sandwiched between the upper flat surface 210a of the first member 200 and the upper flat surface 310a of the second member 300. The cutter 400 is provided with a fixing hole 410 and a fixing notch 420. The cutter 400 is fixed to the upper flat surface 210 a of the first member 200 or the lower flat surface 310 a of the second member 300 using the fixing hole 410 and the fixing notch 420. The cutter 400 may be a disk-shaped rotary cutter in which a blade portion is provided on the outer peripheral edge portion.
　図１０は、ロック付コルゲートチューブ１０が挿入されているスリット形成治具１００を挿入側開口１１１から見た際の当該スリット形成治具１００を拡大して示す図である。図１０では第２部材３００の図示は省略している。また、図１１は、ロック付コルゲートチューブ１０の第２溝部３４の底部がカッター４００によって切断される様子を示す図である。図１１では第２部材３００の図示は省略している。 FIG. 10 is an enlarged view showing the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube with lock 10 is inserted is viewed from the insertion side opening 111. In FIG. 10, the illustration of the second member 300 is omitted. FIG. 11 is a view showing a state in which the bottom of the second groove 34 of the corrugated tube 10 with lock is cut by the cutter 400. In FIG. 11, the second member 300 is not shown.
　長方形板状のカッター４００における短手方向の一方端は刃部４３０となっている。カッター４００の刃部４３０は、その一部４３０ａが挿入空間１１０内に侵入して当該挿入空間１１０を挿入側開口１１１から見た際に見えるように、挿入方向に対して傾斜している。刃部４３０の一部４３０ａは、図８に示されるように、第２回転抑制突起部１３０における長手方向の取り出し側開口側の端部（挿入側開口１１１から見て奥側の端部）の近くから挿入空間１１０内に侵入している。刃部４３０の一部４３０ａが挿入空間１１０内に位置するようにカッター４００が第１部材２００の上側平坦面２１０ａと第２部材３００の上側平坦面３１０ａとで挟まれた際には、第２回転抑制突起部１３０における長手方向の取り出し側開口側の端部はカッター４００と接触するようになる（図８参照）。 One end in the short direction of the rectangular plate-shaped cutter 400 is a blade portion 430. The blade portion 430 of the cutter 400 is inclined with respect to the insertion direction so that a part 430a enters the insertion space 110 and is visible when the insertion space 110 is viewed from the insertion-side opening 111. As shown in FIG. 8, a part 430 a of the blade portion 430 is an end of the second rotation suppression protrusion 130 on the extraction side opening side in the longitudinal direction (end on the back side when viewed from the insertion side opening 111). It penetrates into the insertion space 110 from nearby. When the cutter 400 is sandwiched between the upper flat surface 210a of the first member 200 and the upper flat surface 310a of the second member 300 such that a part 430a of the blade portion 430 is located in the insertion space 110, the second The end of the rotation suppressing protrusion 130 on the extraction side opening side in the longitudinal direction comes into contact with the cutter 400 (see FIG. 8).
　図９に示されるように、第１回転抑制突起部１２０、第２回転抑制突起部１３０及び第３回転抑制突起部１４０のそれぞれについての長手方向に垂直な面での断面形状は略三角形となっている。第１回転抑制突起部１２０、第２回転抑制突起部１３０及び第３回転抑制突起部１４０は、挿入空間１１０に挿入されたロック付コルゲートチューブ１０の第１溝部２６、第２溝部３４及び第３溝部３５とそれぞれ嵌合する。つまり、ロック付コルゲートチューブ１０は、その第１溝部２６、第２溝部３４及び第３溝部３５が、スリット形成治具１００の第１回転抑制突起部１２０、第２回転抑制突起部１３０及び第３回転抑制突起部１４０とそれぞれ嵌合するように、当該スリット形成治具１００の挿入空間１１０に挿入される。 As shown in FIG. 9, each of the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third rotation suppression protrusion 140 has a substantially triangular cross-sectional shape in a plane perpendicular to the longitudinal direction. ing. The first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third rotation suppression protrusion 140 are the first groove 26, the second groove 34, and the third of the corrugated tube 10 with the lock inserted into the insertion space 110. The groove portions 35 are respectively fitted. That is, the corrugated tube 10 with the lock has the first groove portion 26, the second groove portion 34, and the third groove portion 35, and the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third groove 35 of the slit forming jig 100. The slits are inserted into the insertion space 110 of the slit forming jig 100 so as to be fitted to the rotation suppressing protrusions 140, respectively.
　第１回転抑制突起部１２０は、第１溝部２６における突起部４９側の側壁部２８と当接し、第２回転抑制突起部１３０は、第２溝部３４における突起部４９側の側壁部３４ａと当接する。これにより、第１回転抑制突起部１２０と第２回転抑制突起部１３０とは、ロック付コルゲートチューブ１０における、第１溝部２６と第２溝部３４の間の部分、つまり突起部４９を挟み込むようになっている。挿入空間１１０に挿入されたロック付コルゲートチューブ１０は、その突起部４９が、スリット形成治具１００の第１回転抑制突起部１２０及び第２回転抑制突起部１３０で挟み込まれた状態で当該挿入空間１１０内を進んでいく。これにより、挿入空間１１０に挿入されたロック付コルゲートチューブ１０は周方向において回転しにくくなる。なお、カッター４００と接触している、第１回転抑制突起部１２０の長手方向の取り出し側開口側の端部については、当該端部と第２回転抑制突起部１３０との間で、カッター４００及び突起部４９を挟み込むことになる。 The first rotation suppression projection 120 abuts against the side wall 28 on the projection 49 side of the first groove 26, and the second rotation suppression projection 130 contacts the side wall 34 a of the second groove 34 on the projection 49 side. Touch. Accordingly, the first rotation suppression protrusion 120 and the second rotation suppression protrusion 130 sandwich the portion between the first groove 26 and the second groove 34 in the corrugated tube 10 with lock, that is, the protrusion 49. It has become. The corrugated tube 10 with the lock inserted into the insertion space 110 has the projection 49 sandwiched between the first rotation restraining projection 120 and the second rotation restraining projection 130 of the slit forming jig 100. Proceed through 110. Thereby, the corrugated tube 10 with a lock inserted into the insertion space 110 is difficult to rotate in the circumferential direction. In addition, about the edge part by the side of the extraction side opening of the longitudinal direction of the 1st rotation suppression projection part 120 which is contacting with the cutter 400, between the said edge part and the 2nd rotation suppression projection part 130, the cutter 400 and The protrusion 49 is sandwiched.
　第１回転抑制突起部１２０は、第１溝部２６の底面２７に当たらないように第１溝部２６と嵌合するようになっている。第２回転抑制突起部１３０は、第２溝部３４と第３溝部３５の間に設けられた複数の嵌合突起部３６に当たらず、かつ第２溝部３４の底面に当たらないように、第２溝部３４と嵌合するようになっている。第３回転抑制突起部１４０は、第３溝部３５における、嵌合突起部３６側とは反対側の側壁部３５ａと当たるように第３溝部３５と嵌合するようになっている。また第３回転抑制突起部１４０は、複数の嵌合突起部３６に当たらず、かつ第３溝部３５の底面に当たらないように、第３溝部３５と嵌合するようになっている。 The first rotation suppression protrusion 120 is adapted to fit with the first groove 26 so as not to hit the bottom surface 27 of the first groove 26. The second rotation suppression protrusion 130 does not contact the plurality of fitting protrusions 36 provided between the second groove part 34 and the third groove part 35 and does not contact the bottom surface of the second groove part 34. It fits into the groove 34. The third rotation suppression protrusion 140 is adapted to be fitted to the third groove 35 so as to come into contact with the side wall 35 a opposite to the fitting protrusion 36 in the third groove 35. Further, the third rotation suppression protrusion 140 is fitted to the third groove 35 so as not to hit the plurality of fitting protrusions 36 and to the bottom of the third groove 35.
　図９に示されるように、複数の通過円滑用突起部１５０，１６０，１７０，１８０のそれぞれについての長手方向に垂直な面での断面形状は、略四角形となっている。挿入空間１１０にロック付コルゲートチューブ１０が挿入されると、当該ロック付コルゲートチューブ１０のうち挿入空間１１０内の部分においては、第１溝部２６、第２溝部３４及び第３溝部３５が形成されている部分以外の部分は、複数の通過円滑用突起部１５０，１６０，１７０，１８０だけでスリット形成治具１００と接触するようになっている。複数の通過円滑用突起部１５０，１６０，１７０，１８０のそれぞれは、挿入空間１１０に挿入されたロック付コルゲートチューブ１０の本体部２０の山部２２に当たるようになっている。これにより、ロック付コルゲートチューブ１０が挿入空間１１０を通過する際に、挿入空間１１０の内面１１０ａの大部分がロック付コルゲートチューブ１０の外面に当たる場合と比較して、ロック付コルゲートチューブ１０と挿入空間１１０の内面１１０ａとの摩擦を小さくすることができる。その結果、ロック付コルゲートチューブ１０は挿入空間１１０を通過し易くなる。 As shown in FIG. 9, the cross-sectional shape of each of the plurality of smooth passage protrusions 150, 160, 170, 180 on the plane perpendicular to the longitudinal direction is a substantially square shape. When the corrugated tube 10 with a lock is inserted into the insertion space 110, the first groove 26, the second groove 34, and the third groove 35 are formed in the portion of the corrugated tube 10 with the lock in the insertion space 110. The portions other than the portions that are present are in contact with the slit forming jig 100 only by the plurality of smooth passage projections 150, 160, 170, 180. Each of the plurality of smooth passage projections 150, 160, 170, and 180 is configured to hit the peak portion 22 of the main body portion 20 of the corrugated tube with lock 10 inserted into the insertion space 110. Thereby, when the corrugated tube 10 with a lock passes through the insertion space 110, the corrugated tube 10 with a lock and the insertion space are compared with the case where most of the inner surface 110a of the insertion space 110 hits the outer surface of the corrugated tube 10 with a lock. The friction with the inner surface 110a of the 110 can be reduced. As a result, the corrugated tube 10 with a lock can easily pass through the insertion space 110.
　図１２は、複数の通過円滑用突起部１５０，１６０，１７０，１８０の配置について説明するための図である。図１２では、上述の図９と同様に、ロック付コルゲートチューブ１０が挿入されているスリット形成治具１００を挿入側開口１１１から見た際の当該スリット形成治具１００が示されている。図１２では、図面の煩雑さを避けるために、通過円滑用突起部１５０，１６０，１７０，１８０の配置説明に特に必要の無い要素の符号をできるだけ削除している。以下の内容は、特に断らない限り、通過円滑用突起部１５０，１６０，１７０，１８０を挿入方向から見た際のそれらについての配置説明となっている。 FIG. 12 is a diagram for explaining the arrangement of the plurality of smooth passage protrusions 150, 160, 170, 180. FIG. 12 shows the slit forming jig 100 when the slit forming jig 100 in which the corrugated tube with lock 10 is inserted is viewed from the insertion side opening 111, as in FIG. 9 described above. In FIG. 12, in order to avoid complication of the drawing, reference numerals of elements that are not particularly necessary for the description of the arrangement of the smooth passage protrusions 150, 160, 170, 180 are deleted as much as possible. Unless otherwise specified, the following content is an explanation of the arrangement of the smooth passage projections 150, 160, 170, 180 when viewed from the insertion direction.
　図１２に示されるように、複数の通過円滑用突起部１５０，１６０，１７０，１８０についての挿入空間１１０の周方向での配置間隔は同一となっている。通過円滑用突起部１５０，１８０は挿入空間１１０の中心軸１１０ｂに対して対称に配置されている。通過円滑用突起部１６０，１７０は、通過円滑用突起部１５０，１８０と中心軸１１０ｂを結ぶ第１直線５００に対して、第１回転抑制突起部１２０、第２回転抑制突起部１３０及び第３回転抑制突起部１４０とは反対側に位置している。したがって、挿入空間１１０にロック付コルゲートチューブ１０を挿入した際には、通過円滑用突起部１６０，１７０は、第１直線５００に対してロック付コルゲートチューブ１０の突起部４９とは反対側に位置するようになる。通過円滑用突起部１６０，１７０と中心軸１１０ｂとが成す角度を二分する第２直線５１０は、第１直線５００と直角を成すとともに、挿入空間１１０に挿入されたロック付コルゲートチューブ１０の突起部４９を通るようになっている。 As shown in FIG. 12, the arrangement interval in the circumferential direction of the insertion space 110 is the same for the plurality of smooth passage protrusions 150, 160, 170, 180. The passage smoothing projections 150 and 180 are arranged symmetrically with respect to the central axis 110 b of the insertion space 110. The smooth passage protrusions 160 and 170 are, with respect to the first straight line 500 connecting the smooth passage protrusions 150 and 180 and the central axis 110b, the first rotation suppression protrusion 120, the second rotation suppression protrusion 130, and the third. It is located on the opposite side to the rotation suppression protrusion 140. Therefore, when the corrugated tube 10 with a lock is inserted into the insertion space 110, the smooth passage protrusions 160 and 170 are positioned on the opposite side of the first straight line 500 from the protrusion 49 of the corrugated tube 10 with a lock. To come. A second straight line 510 that bisects the angle formed by the passage smoothing protrusions 160 and 170 and the central axis 110 b is perpendicular to the first straight line 500 and is a protrusion of the corrugated tube 10 with a lock inserted into the insertion space 110. 49 through.
　以上のように配置された複数の通過円滑用突起部１５０，１６０，１７０，１８０では、二つの通過円滑用突起部１６０，１７０が、ロック付コルゲートチューブ１０における、第１溝部２６及び第２溝部３４の間の部分のうち挿入空間１１０内の部分、つまり挿入空間１１０内の突起部４９を、挿入空間１１０の内面１１０ａに向けて押し付けるようになっている。これにより、カッター４００によって切断される第２溝部３４の底部が内周側に移動することを抑制することができる。 In the plurality of smooth passage protrusions 150, 160, 170, 180 arranged as described above, the two smooth passage protrusions 160, 170 are the first groove portion 26 and the second groove portion in the corrugated tube 10 with a lock. 34, the portion in the insertion space 110, that is, the protrusion 49 in the insertion space 110 is pressed toward the inner surface 110a of the insertion space 110. Thereby, it can suppress that the bottom part of the 2nd groove part 34 cut | disconnected by the cutter 400 moves to an inner peripheral side.
　また、二つの通過円滑用突起部１５０，１８０によって、突起部４９が挿入空間１１０の内面１１０ａに向けて押し付けられる方向及び挿入方向に垂直な方向（第１直線５００の延在方向）にロック付コルゲートチューブ１０がずれることが抑制される。 Further, the two passing smoothing projections 150 and 180 are locked in the direction in which the projection 49 is pressed toward the inner surface 110a of the insertion space 110 and the direction perpendicular to the insertion direction (the extending direction of the first straight line 500). The corrugated tube 10 is prevented from shifting.
　以上のような構造を有するスリット形成治具１００の挿入空間１１０に対してロック付コルゲートチューブ１０がその延在方向の一端から挿入されていくと、ロック付コルゲートチューブ１０の第１溝部２６及び第２溝部３４にそれぞれ嵌合する第１回転抑制突起部１２０及び第２回転抑制突起部１３０が、ロック付コルゲートチューブ１０の突起部４９を挟み込んだ状態で、上述の図１１に示されるように第２溝部３４の底部が延在方向の端からカッター４００における刃部４３０の一部４３０ａによって切断される。具体的には、第２溝部３４の底部における、突起部４９との境界部分が、挿入空間１１０内に侵入している刃部４３０の一部４３０ａによって切断される。そして、ロック付コルゲートチューブ１０が挿入空間１１０を通過すると、第２溝部３４の底部が延在方向の端から端まで切断されて、スリット５０を有するロック付コルゲートチューブ１０が得られる。 When the corrugated tube 10 with a lock is inserted into the insertion space 110 of the slit forming jig 100 having the above-described structure from one end in the extending direction, the first groove portion 26 and the first groove 26 of the corrugated tube 10 with a lock are inserted. As shown in FIG. 11 described above, the first rotation suppression protrusion 120 and the second rotation suppression protrusion 130 that are fitted in the two groove portions 34 sandwich the protrusion 49 of the corrugated tube 10 with the lock. The bottom part of the two groove part 34 is cut | disconnected by the part 430a of the blade part 430 in the cutter 400 from the edge of the extension direction. Specifically, a boundary portion with the projection 49 at the bottom of the second groove 34 is cut by a part 430 a of the blade 430 that has entered the insertion space 110. And if the corrugated tube 10 with a lock | rock passes the insertion space 110, the bottom part of the 2nd groove part 34 will be cut | disconnected from the end to the end of the extending direction, and the corrugated tube 10 with a lock | rock which has the slit 50 will be obtained.
　なお、上記の例では、スリット形成治具１００に第３回転抑制突起部１４０を設けていたが、当該第３回転抑制突起部１４０を設けなくても良い。 In the above example, the third rotation suppression protrusion 140 is provided in the slit forming jig 100. However, the third rotation suppression protrusion 140 may not be provided.
　また、上の例では、第１回転抑制突起部１２０は、第１溝部２６に対して、その底面２７に接触しないように嵌合していたが、必ずしもその必要はない。同様に、第２回転抑制突起部１３０が、第２溝部３４に対して、その底面に当たらないように嵌合することは、必ずしも必要でない。同様に、第３回転抑制突起部１４０が、第３溝部３５に対して、その底面に接触しないように嵌合することは、必ずしも必要でない。 In the above example, the first rotation suppression protrusion 120 is fitted to the first groove 26 so as not to contact the bottom surface 27, but this is not necessarily required. Similarly, it is not always necessary to fit the second rotation suppressing protrusion 130 to the second groove 34 so as not to hit the bottom surface thereof. Similarly, it is not always necessary that the third rotation suppression protrusion 140 is fitted to the third groove 35 so as not to contact the bottom surface.
　以上のように、本実施の形態では、ロック付コルゲートチューブ１０の突起部４９が第１回転抑制突起部１２０及び第２回転抑制突起部１３０で挟み込まれた状態で、第２溝部３４の底部がカッター４００で切断される。したがって、第２溝部３４の底部にスリット５０を形成する際にロック付コルゲートチューブ１０が周方向に回転することを抑制することができる。よって、スリット５０の周方向の形成位置が所望位置からずれることを抑制することができる。その結果、ロック構造３０の嵌合突起部３６が損傷したり、嵌合突起部３６と嵌合凹部４４とが嵌合せずにロック構造３０が機能しなかったりすることを抑制することができる。 As described above, in the present embodiment, the bottom portion of the second groove portion 34 is in a state where the projection 49 of the corrugated tube 10 with lock is sandwiched between the first rotation suppression projection 120 and the second rotation suppression projection 130. It is cut with a cutter 400. Therefore, when forming the slit 50 in the bottom part of the 2nd groove part 34, it can suppress that the corrugated tube 10 with a lock | rock rotates in the circumferential direction. Therefore, it can suppress that the formation position of the circumferential direction of the slit 50 shift | deviates from a desired position. As a result, it is possible to prevent the fitting protrusion 36 of the lock structure 30 from being damaged, or the fitting protrusion 36 and the fitting recess 44 from being fitted together and the lock structure 30 from functioning.
　また、本実施の形態では、第２回転抑制突起部１３０は、ロック付コルゲートチューブ１０の嵌合突起部３６に当たらないように第２溝部３４に嵌合する。したがって、ロック付コルゲートチューブ１０にスリット５０を形成する際に嵌合突起部３６が損傷することを確実に抑制することができる。 Further, in the present embodiment, the second rotation suppression protrusion 130 is fitted into the second groove 34 so as not to hit the fitting protrusion 36 of the corrugated tube 10 with lock. Therefore, when the slit 50 is formed in the corrugated tube 10 with a lock, the fitting protrusion 36 can be reliably prevented from being damaged.
　また、本実施の形態のように、第２回転抑制突起部１３０を、第２溝部３４に対して、その底面に接触しないように嵌合させることによって、スリット５０の形成時に、カッター４００によって切断される第２溝部３４の底部が内周側に押されて移動することを抑制することができる。よって、スリット５０の形成位置がずれることを抑制することができる。 Further, as in the present embodiment, the second rotation suppression protrusion 130 is fitted to the second groove 34 so as not to contact the bottom surface thereof, and is cut by the cutter 400 when the slit 50 is formed. It is possible to suppress the bottom portion of the second groove portion 34 being moved by being pushed toward the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts | deviates.
　また、本実施の形態のように、第１回転抑制突起部１２０を、第１溝部２６に対して、その底面２７に接触しないように嵌合させることによって、スリット５０の形成時に、第１溝部２６の底部が内周側に押されて、カッター４００によって切断される第２溝部３４の底部が内周側に移動することを抑制することができる。よって、スリット５０の形成位置がずれることを抑制することができる。 In addition, as in the present embodiment, the first rotation suppression protrusion 120 is fitted to the first groove 26 so as not to contact the bottom surface 27, so that the first groove is formed when the slit 50 is formed. It is possible to prevent the bottom portion of the second groove portion 34 that is cut by the cutter 400 from being pushed to the inner peripheral side by moving the bottom portion 26 to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts | deviates.
　また、本実施の形態のように、スリット形成治具１００に対して、ロック付コルゲートチューブ１０の第３溝部３５に嵌合する第３回転抑制突起部１４０を設けた場合には、ロック付コルゲートチューブ１０にスリット５０を形成する際にロック付コルゲートチューブ１０が周方向にさらに回転しにくくなる。よって、スリット５０の周方向での形成位置がずれることをさらに抑制することができる。 Further, as in the present embodiment, when the third rotation suppressing protrusion 140 that fits into the third groove 35 of the corrugated tube 10 with a lock is provided on the slit forming jig 100, the corrugated with a lock is provided. When the slit 50 is formed in the tube 10, the corrugated tube 10 with a lock becomes more difficult to rotate in the circumferential direction. Therefore, it can further suppress that the formation position of the slit 50 in the circumferential direction is shifted.
　また、第３回転抑制突起部１４０を設ける場合には、本実施の形態のように、第３回転抑制突起部１４０を、ロック付コルゲートチューブ１０の嵌合突起部３６に当たらないよう第３溝部３５に嵌合させることによって、スリット５０の形成時に嵌合突起部３６が損傷することを抑制することができる。また、第３回転抑制突起部１４０を、第３溝部３５に対して、その底面に接触しないように嵌合させることによって、スリット５０の形成時に、第３溝部３５の底部が内周側に押されることによって、カッター４００によって切断される第２溝部３４の底部が内周側に移動することを抑制することができる。よって、スリット５０の形成位置がずれることを抑制することができる。 Moreover, when providing the 3rd rotation suppression projection part 140, the 3rd groove part so that the 3rd rotation suppression projection part 140 may not contact | win the fitting projection part 36 of the corrugated tube 10 with a lock | rock like this Embodiment. By fitting to 35, it is possible to prevent the fitting protrusion 36 from being damaged when the slit 50 is formed. In addition, by fitting the third rotation suppression protrusion 140 to the third groove 35 so as not to contact the bottom surface thereof, the bottom of the third groove 35 is pushed to the inner peripheral side when the slit 50 is formed. As a result, it is possible to prevent the bottom portion of the second groove portion 34 cut by the cutter 400 from moving to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts | deviates.
　また、本実施の形態では、ロック付コルゲートチューブ１０のうち挿入空間１１０に挿入されている部分においては、第１溝部２６、第２溝部３４及び第３溝部３５が形成されている部分以外の部分は、複数の通過円滑用突起部１５０，１６０，１７０，１８０だけでスリット形成治具１００と接触している。したがって、挿入空間１１０に対してロック付コルゲートチューブ１０を通過させ易くなる。よって、作業性が向上する。 Moreover, in this Embodiment, in the part inserted in the insertion space 110 among the corrugated tubes 10 with a lock | rock, parts other than the part in which the 1st groove part 26, the 2nd groove part 34, and the 3rd groove part 35 are formed. Are in contact with the slit forming jig 100 only by the plurality of smooth passage projections 150, 160, 170, 180. Therefore, the corrugated tube 10 with a lock can be easily passed through the insertion space 110. Therefore, workability is improved.
　また、本実施の形態では、通過円滑用突起部１６０，１７０が、ロック付コルゲートチューブ１０における、挿入空間１１０内の突起部４９を、挿入空間１１０の内面１１０ａに向けて押し付けている。したがって、スリット５０の形成時に、カッター４００によって切断される第２溝部３４の底部が内周側に移動することを抑制することができる。よって、スリット５０の形成位置がずれることを抑制することができる。 In the present embodiment, the smooth passage protrusions 160 and 170 press the protrusion 49 in the insertion space 110 of the lock corrugated tube 10 toward the inner surface 110 a of the insertion space 110. Therefore, when the slit 50 is formed, it is possible to prevent the bottom portion of the second groove portion 34 cut by the cutter 400 from moving to the inner peripheral side. Therefore, it can suppress that the formation position of the slit 50 shifts | deviates.
　なお、本実施の形態に係るロック付コルゲートチューブ１０では、図９に示されるように、第２溝部３４における突起部４９側の側壁部３４ａ（突起部４９における周方向の第２溝部３４側の側面）は、周方向に対してほぼ垂直を成していることから、第２回転抑制突起部１３０が当該側壁部３４ａに当たるように第２溝部３４に嵌合することによって、ロック付コルゲートチューブ１０を挿入側開口１１１から見た際の時計回りの方向（以後、単に「時計周りの方向」と呼ぶ）にはロック付コルゲートチューブ１０は回転しにくい。 In addition, in the corrugated tube 10 with a lock according to the present embodiment, as shown in FIG. 9, the side wall portion 34 a on the protruding portion 49 side in the second groove portion 34 (on the second groove portion 34 side in the circumferential direction of the protruding portion 49). Since the side surface) is substantially perpendicular to the circumferential direction, the corrugated tube 10 with the lock is fitted by fitting the second rotation suppressing projection 130 into the second groove 34 so as to contact the side wall 34a. In the clockwise direction when viewed from the insertion-side opening 111 (hereinafter simply referred to as “clockwise direction”), the locked corrugated tube 10 is difficult to rotate.
　一方で、第１溝部２６における突起部４９側の側壁部２８（突起部４９における周方向の第１溝部２６側の側面）は、周方向に対して時計回りの方向に大きく傾斜していることから、第１回転抑制突起部１２０が当該側壁部２８に当たるように第１溝部２６に嵌合しているとしても、ロック付コルゲートチューブ１０は、それを挿入側開口１１１から見た際の反時計回りの方向（以後、単に「反時計回りの方向」と呼ぶ）に比較的回転し易くなっている。 On the other hand, the side wall 28 on the projection 49 side of the first groove 26 (the side surface on the first groove 26 side in the circumferential direction of the projection 49) is greatly inclined in the clockwise direction with respect to the circumferential direction. Therefore, even if the first rotation restraining projection 120 is fitted in the first groove 26 so as to contact the side wall 28, the locked corrugated tube 10 is counterclockwise when viewed from the insertion side opening 111. It is relatively easy to rotate in the direction of rotation (hereinafter simply referred to as “counterclockwise direction”).
　そこで、上記の例では、第３回転抑制突起部１４０を第３溝部３５に嵌合させる際に、当該第３回転抑制突起部１４０が第３溝部３５における、嵌合突起部３６側とは反対側の側壁部３５ａに当たるようにしている。これにより、ロック付コルゲートチューブ１０が反時計回りの方向に回転しにくくなる。よって、スリット５０の形成位置がずれることを抑制することができる。 Therefore, in the above example, when the third rotation suppression protrusion 140 is fitted into the third groove 35, the third rotation suppression protrusion 140 is opposite to the fitting protrusion 36 side in the third groove 35. The side wall portion 35a is in contact with the side wall portion 35a. This makes it difficult for the corrugated tube 10 with a lock to rotate counterclockwise. Therefore, it can suppress that the formation position of the slit 50 shifts | deviates.
　以上のように、ロック付コルゲートチューブ１０及びスリット形成治具１００は詳細に説明されたが、上記した説明は、全ての局面において例示であって、この発明がそれに限定されるものではない。また、上述した各種変形例は、相互に矛盾しない限り組み合わせて適用可能である。そして、例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。 As mentioned above, although the corrugated tube 10 with a lock | rock and the slit formation jig | tool 100 were demonstrated in detail, above-described description is an illustration in all the aspects, Comprising: This invention is not limited to it. The various modifications described above can be applied in combination as long as they do not contradict each other. And it is understood that the countless modification which is not illustrated can be assumed without deviating from the scope of the present invention.
　１０　ロック付コルゲートチューブ
　２６　第１溝部
　２７　底面
　３４　第２溝部
　３５　第３溝部
　３６　嵌合突起部
　４４　嵌合凹部
　４９　突起部
　５０　スリット
　１００　スリット形成治具
　１１０　挿入空間
　１１０ａ　内面
　１２０　第１回転抑制突起部
　１３０　第２回転抑制突起部
　１４０　第３回転抑制突起部
　１５０，１６０，１７０，１８０　通過円滑用突起部
　４００　カッター DESCRIPTION OF SYMBOLS 10 Corrugated tube with a lock | rock 26 1st groove part 27 Bottom face 34 2nd groove part 35 3rd groove part 36 Fitting protrusion part 44 Fitting recessed part 49 Protrusion part 50 Slit 100 Slit formation jig 110 Insertion space 110a Inner surface 120 1st rotation suppression protrusion part 130 Second rotation suppression protrusion 140 Third rotation suppression protrusion 150, 160, 170, 180 Protrusion for smooth passage 400 Cutter

Claims (10)

  1. 　蛇腹構造の筒状に形成され、延在方向に沿うスリットを有するロック付コルゲートチューブの当該スリットを形成する際に使用されるスリット形成治具であって、
    　前記スリットが形成される前の前記ロック付コルゲートチューブは、
    　　前記ロック付コルゲートチューブの外面に前記延在方向に沿って設けられ、当該ロック付コルゲートチューブの周方向にこの順で並べられた第１、第２及び第３溝部と、
    　　前記ロック付コルゲートチューブの外面において前記第２及び第３溝部の間に設けられ、前記延在方向に沿って並んだ複数の嵌合突起部と
    を備え、
    　前記第２溝部の底部には前記スリットが形成され、
    　前記ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分の内面には、前記延在方向に沿って並んだ、前記複数の嵌合突起部とそれぞれ嵌合係止する複数の嵌合凹部が形成されており、
    　前記スリット形成治具は、
    　　前記ロック付コルゲートチューブが挿入されて通過する挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第１溝部に嵌合する第１突起部と、
    　　前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第２溝部に嵌合する第２突起部と、
    　　前記第２溝部の底部を切断して当該底部に前記スリットを形成するカッターと
    を備え、
    　前記ロック付コルゲートチューブが前記延在方向の一端から前記挿入空間に挿入されていくと、当該ロック付コルゲートチューブの前記第１及び第２溝部にそれぞれ嵌合する前記第１及び第２突起部が、当該ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分を挟み込んだ状態で、前記第２溝部の底部が前記延在方向の端から前記カッターによって切断される、スリット形成治具。     A slit forming jig used in forming the slit of the corrugated tube with a lock having a slit along the extending direction, which is formed in a cylindrical shape of a bellows structure,
    The corrugated tube with a lock before the slit is formed,
    First, second and third groove portions provided along the extending direction on the outer surface of the corrugated tube with lock, and arranged in this order in the circumferential direction of the corrugated tube with lock;
    A plurality of fitting protrusions provided between the second and third grooves on the outer surface of the corrugated tube with a lock, and arranged along the extending direction;
    The slit is formed at the bottom of the second groove,
    In the corrugated tube with lock, on the inner surface of the portion between the first and second groove portions, a plurality of fittings that are fitted and locked with the plurality of fitting protrusions arranged along the extending direction, respectively. A concavity is formed,
    The slit forming jig is
    A first protrusion that is provided on an inner surface of an insertion space through which the corrugated tube with a lock is inserted, extends along an insertion direction of the corrugated tube with a lock, and fits into the first groove portion;
    A second protrusion provided on the inner surface of the insertion space, extending along the insertion direction of the corrugated tube with lock, and fitted into the second groove;
    A cutter that cuts the bottom of the second groove and forms the slit in the bottom;
    When the corrugated tube with a lock is inserted into the insertion space from one end in the extending direction, the first and second protrusions that fit into the first and second groove portions of the corrugated tube with a lock, respectively. A slit forming jig in which the bottom of the second groove is cut from the end in the extending direction by the cutter in a state where the portion between the first and second grooves is sandwiched in the corrugated tube with lock .
  2. 　請求項１に記載のスリット形成治具であって、
    　前記第２突起部は、前記ロック付コルゲートチューブの前記複数の嵌合突起部に当たらないように前記第２溝部に嵌合する、スリット形成治具。     The slit forming jig according to claim 1,
    The slit forming jig, wherein the second protrusion is fitted into the second groove so as not to hit the plurality of fitting protrusions of the corrugated tube with lock.
  3. 　請求項１に記載のスリット形成治具であって、
    　前記第２突起部は、前記第２溝部の底面に当たらないように当該第２溝部に嵌合する、スリット形成治具。     The slit forming jig according to claim 1,
    The slit forming jig that fits into the second groove so that the second protrusion does not hit the bottom surface of the second groove.
  4. 　請求項１に記載のスリット形成治具であって、
    　前記第１突起部は、前記第１溝部の底面に当たらないように当該第１溝部に嵌合する、スリット形成治具。     The slit forming jig according to claim 1,
    The first protrusion is a slit forming jig that fits into the first groove so as not to hit the bottom surface of the first groove.
  5. 　請求項１に記載のスリット形成治具であって、
    　前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在し、前記第３溝部に嵌合する第３突起部をさらに備える、スリット形成治具。     The slit forming jig according to claim 1,
    A slit forming jig, further comprising a third protrusion provided on an inner surface of the insertion space, extending along an insertion direction of the corrugated tube with a lock, and fitting into the third groove.
  6. 　請求項５に記載のスリット形成治具であって、
    　前記第３突起部は、前記ロック付コルゲートチューブの前記複数の嵌合突起部に当たらないように前記第３溝部に嵌合する、スリット形成治具。     The slit forming jig according to claim 5,
    The slit forming jig, wherein the third protrusion is fitted into the third groove so as not to hit the plurality of fitting protrusions of the corrugated tube with lock.
  7. 　請求項５に記載のスリット形成治具であって、
    　前記第３突起部は、前記第３溝部の底面に当たらないように当該第３溝部に嵌合する、スリット形成治具。     The slit forming jig according to claim 5,
    The slit forming jig, wherein the third protrusion is fitted into the third groove so as not to hit the bottom surface of the third groove.
  8. 　請求項１に記載のスリット形成治具であって、
    　前記挿入空間の内面に設けられ、前記ロック付コルゲートチューブの挿入方向に沿って延在する複数の第４突起部をさらに備え、
    　前記ロック付コルゲートチューブのうち前記挿入空間に挿入されている部分においては、前記第１乃至第３溝部が形成されている部分以外の部分は、前記複数の第４突起部だけで前記スリット形成治具と接触している、スリット形成治具。     The slit forming jig according to claim 1,
    A plurality of fourth protrusions provided on an inner surface of the insertion space and extending along an insertion direction of the corrugated tube with a lock;
    In the portion of the corrugated tube with a lock that is inserted into the insertion space, the portions other than the portions where the first to third groove portions are formed are only the plurality of fourth protrusions, and the slit forming treatment is performed. Slit forming jig in contact with the tool.
  9. 　請求項８に記載のスリット形成治具であって、
    　前記複数の第４突起部は、前記ロック付コルゲートチューブにおける、前記第１及び第２溝部の間の部分のうち前記挿入空間内の部分を、当該挿入空間の内面に向けて押し付ける複数の第５突起部を含む、スリット形成治具。     The slit forming jig according to claim 8,
    The plurality of fourth protrusions are a plurality of fifth protrusions that press a portion in the insertion space among the portions between the first and second grooves in the corrugated tube with lock toward the inner surface of the insertion space. A slit forming jig including a protrusion.
  10. 　請求項１に記載のスリット形成治具が使用されてスリットが形成されたロック付コルゲートチューブ。 A corrugated tube with a lock in which a slit is formed by using the slit forming jig according to claim 1.
PCT/JP2012/078475 2012-05-28 2012-11-02 Slit-forming jig and corrugated tube with lock WO2013179511A1 (en)

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JP2012120612A JP2013247793A (en) 2012-05-28 2012-05-28 Slit forming jig and corrugated tube with lock
JP2012-120612 2012-05-28

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10136531A (en) * 1996-09-03 1998-05-22 Sumitomo Wiring Syst Ltd Corrugated tube
JP2010005763A (en) * 2008-06-27 2010-01-14 Sumitomo Wiring Syst Ltd Slit formation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10136531A (en) * 1996-09-03 1998-05-22 Sumitomo Wiring Syst Ltd Corrugated tube
JP2010005763A (en) * 2008-06-27 2010-01-14 Sumitomo Wiring Syst Ltd Slit formation device

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