JP2013099153A - Corrugated tube with path maintaining member, and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of stably covering an electric wire without exposing it, and integrally maintaining a path at lower costs.SOLUTION: A corrugated tube 2 with a path maintaining member comprises a corrugated tube 3, and a path maintaining member 4. The path maintaining member 4 is a long member formed to maintain a shape in a longitudinal direction, and is mounted in a longitudinal direction of the corrugated tube 3 while both side edges of a slit 33 of the corrugated tube 3 are housed in a pair of recess grooves 401, 401 formed in its longitudinal direction. Among a pair of side walls 420, 430 of the recess groove 401, the side wall 420 covering outer portions of both side edges of the slit 33 is formed in a corrugated shape formed by alternately repeating projection strips 51 and recess strips 52 in an extension direction of the recess groove 401.

Description

  The present invention relates to a technique for keeping a route constant while covering an electric wire.

  Conventionally, as disclosed in Patent Documents 1 to 4, a technique of covering a wire harness laid on a vehicle or the like with a corrugated tube having good flexibility is known.

Japanese Utility Model Publication No. 4-86022 JP 2000-184551 A JP 2002-64917 A JP 2006-296166 A

  However, since the corrugated tube itself is excellent in flexibility, the corrugated tube itself does not have a function of keeping the path of the wire harness constant. For this reason, it is necessary to keep the path of the wire harness constant by fixing the clamp member attached to the wire harness or the corrugated tube to a certain position of the vehicle. If the number of fixing portions of the clamp member is increased, there is a risk of increasing the component cost and the mounting cost.

  Here, according to the bowl-shaped resin molded product (protector) formed in a three-dimensional shape according to the laying position of the wire harness, the path can be maintained constant while protecting the wire harness.

  However, in order to form a resin molded product capable of protecting the wire harness into a three-dimensional shape in accordance with the laying position of the wire harness, the mold shape becomes complicated. For this reason, a manufacturing cost becomes high.

  Then, an object of this invention is to provide the technique which can maintain the path | route integrally at lower cost, stably covering without exposing an electric wire.

  The corrugated tube with a path maintaining member according to the first aspect includes a corrugated tube in which annular convex portions and annular concave portions are alternately formed along the longitudinal direction, and slits are formed along the longitudinal direction, and in the longitudinal direction. A long member formed so as to maintain its shape along the edge, and the edge portions on both sides of the slit of the corrugated tube are accommodated in a pair of concave grooves formed along the longitudinal direction. And a path maintaining member attached along the longitudinal direction of the corrugated tube, and of the pair of side wall surfaces of the concave groove portion, the side wall surface covering the outer portions of the edge portions on both sides of the slit, Along the extending direction of the concave groove portion, a convex ridge portion and a concave ridge portion are formed in a wave shape that is formed alternately and repeatedly.

  A 2nd aspect is a corrugated tube with a path | route maintenance member which concerns on a 1st aspect, Comprising: The said protruding item | line part is formed so that meshing | engagement with the said annular recessed part is possible.

  A 3rd aspect is a corrugated tube with a path | route maintenance member which concerns on a 2nd aspect, Comprising: The pitch of the said protruding item | line part corresponds with the pitch of the said annular recessed part.

  A 4th aspect is a corrugated tube with a path | route maintenance member which concerns on any one 1st to 3rd aspect, Comprising: While the top part of the said protruding item | line part is rounded by the cross-sectional convex arc shape, the said recessed item | line The bottom of the part is rounded into a concave arc in cross section.

  A wire harness according to a fifth aspect includes a corrugated tube with a path maintaining member according to any one of the first to fourth aspects and at least one electric wire, and is inserted into the corrugated tube with a path maintaining member. A wire harness main body portion.

  According to the first aspect, the electric wire is covered with the corrugated tube, and the route is maintained constant by the route maintaining member attached to the corrugated tube, so that the route is made constant while covering the electric wire at a lower cost. Can be maintained. In particular, among the pair of side wall surfaces of the recessed groove portion in which the edge portions on both sides of the slit are accommodated, the side wall surface that covers the outer portion of the edge portion of the slit is formed in a corrugated shape. Even if a force is applied to the tube in the circumferential direction, it is difficult to form a gap between the path maintaining member and the corrugated tube. Therefore, the electric wire can be stably covered without being exposed.

  According to the 2nd aspect, the protruding item | line part formed in the side wall surface which covers the outer part of the edge part of the both sides of a slit is formed so that meshing | engagement with the annular recessed part of a corrugated tube is possible. By setting the ridge portion to mesh with the annular recess, generation of a gap between the path maintaining member and the corrugated tube can be effectively suppressed.

  According to the 3rd aspect, the pitch of the protruding item | line part formed in the side wall surface which covers the outer part of the edge part of the both sides of a slit corresponds with the pitch of the annular recessed part of a corrugated tube. According to this configuration, the ridge can be engaged with the annular recess, and the recess can be engaged with the annular ridge. Therefore, generation | occurrence | production of the clearance gap between a path | route maintenance member and a corrugated tube can be suppressed especially effectively.

  According to the fourth aspect, the top of the ridge formed on the side wall surface covering the outer portions of the edge portions on both sides of the slit is rounded into a cross-sectional convex arc shape, and the bottom of the ridge is cross-sectional It is rounded into a concave arc. According to this configuration, when the path maintaining member is relatively slid along the extending direction of the slit and the edge portions on both sides of the slit are accommodated in the groove, the path maintaining member is relatively smoothly moved. Can be made. Therefore, it is difficult to place a burden on the work of attaching the path maintaining member to the corrugated tube.

  According to the fifth aspect, the wire harness main body is covered by the corrugated tube, and the path is maintained constant by the path maintaining member attached to the corrugated tube, so that the wire harness main body is covered at a lower cost. However, the route can be kept constant. In particular, among the pair of side wall surfaces of the recessed groove portion in which the edge portions on both sides of the slit are accommodated, the side wall surface that covers the outer portion of the edge portion of the slit is formed in a corrugated shape. Even if a force is applied to the tube in the circumferential direction, it is difficult to form a gap between the path maintaining member and the corrugated tube. Therefore, the wire harness main body can be stably covered without being exposed.

It is a schematic perspective view which shows the mounting part of the corrugated tube with a path | route maintenance member among wire harnesses. It is a side view which expands and shows a part of mounting part of a corrugated tube with a path | route maintenance member among wire harnesses. It is explanatory drawing which shows the process of attaching a path | route maintenance member to a corrugated tube. It is a figure which shows typically the mode of the cross section of a wire harness when the force which twists this in the circumferential direction is applied to the corrugated tube with a path | route maintenance member. It is a figure for demonstrating the structural example of the path | route maintenance member shared between several types of corrugated tubes.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

<1. Wire harness 100>
A wire harness 100 according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic perspective view showing a mounting portion of the corrugated tube 2 with a path maintaining member in the wire harness 100. FIG. 2 is an enlarged side view of a part of the mounting portion of the corrugated tube 2 with a path maintaining member in the wire harness 100.

  The wire harness 100 includes a wire harness main body 1 and a corrugated tube 2 with a path maintaining member.

<1-1. Wire harness body 1>
The wire harness body 1 is configured by binding a plurality of electric wires. More specifically, the wire harness main body 1 has a configuration in which a plurality of electric wires are bundled while being branched according to a wiring form to a vehicle to be arranged. In addition, the wire harness main-body part 1 does not necessarily need to branch. Moreover, the wire harness main-body part 1 may be comprised with the single electric wire. In addition, another optical cable or the like may be bound to the wire harness main body 1.

  When the wire harness main body 1 is disposed in a vehicle or the like, the wire harness main body 1 is bent along a predetermined arrangement form. At this time, the wire harness main body 1 may be maintained in a shape bent along a predetermined arrangement form in order to suppress interference of the wire harness main body 1 with a peripheral portion. In such a case, the corrugated tube 2 with a path maintenance member is attached to the wire harness main body 1, and thereby the wire harness main body 1 is maintained in a certain bent shape. In addition, the part by which the corrugated tube 2 with a path | route maintenance member is mounted | worn with respect to the wire harness main-body part 1 may be a part of the wire harness main-body part 1, and substantially the whole.

<1-2. Corrugated tube with path maintaining member 2>
The corrugated tube 2 with a path maintaining member includes a corrugated tube 3 and a path maintaining member 4.

<Corrugated tube 3>
The corrugated tube 3 is a cylindrical member in which the annular convex portions 31 and the annular concave portions 32 are alternately formed along the longitudinal direction, and is formed of a resin or the like. Since the corrugated tube 3 is easily elastically deformed at a step portion between the annular convex portion 31 and the annular concave portion 32, the corrugated tube 3 itself has a property of being easily bent and deformed. Usually, as the corrugated tube 3, a corrugated tube having an inner diameter larger than the outer diameter (usually somewhat larger) of the portion of the wire harness main body 1 to be mounted is used.

  A slit 33 is formed on one side of the corrugated tube 3 along the longitudinal direction of the corrugated tube 3. The corrugated tube 3 is opened by the slit 33 so that the wire harness main body 1 can be easily disposed in the corrugated tube 3.

<Route maintenance member 4>
The path maintaining member 4 is a long member that is molded so as to maintain a shape that is bent at least partially along the longitudinal direction. P. It is made of a resin such as (polypropylene). In other words, the path maintaining member 4 is formed in a shape that is bent at least partially at the time of molding. The bending shape of the path maintaining member 4 is set to a shape corresponding to the arrangement path in which the portion to be attached of the wire harness main body 1 is disposed. In the example shown in FIG. 1, an intermediate portion in the longitudinal direction of the path maintaining member 4 is bent so as to draw a gentle S-shape, and both ends of the path maintaining member 4 are formed in a straight line. The part formed in the bent shape among the path | route maintenance members 4 may be the whole or a part. Moreover, the part formed in the bent shape may be formed in the shape bent on a plane, and may be formed in the shape bent in three dimensions (three-dimensional).

  The path maintaining member 4 has a portion in which a pair of concave grooves 401 and 401 are formed along the longitudinal direction. Specifically, the path maintaining member 4 is provided with an outer peripheral protrusion 42 on an edge on one side (outer peripheral side) of the elongated connecting part 41 and on the other side (inner peripheral side) of the connecting part 41. The inner periphery side protrusion 43 is disposed on the edge of the side), and the cross-sectional shape of the path maintaining member 4 in the plane orthogonal to the longitudinal direction is substantially H-shaped. Presents. In this configuration, the side surface of the connecting portion 41 forms the bottom surface of the recessed groove portion 401. Further, a surface (downside surface) 420 on the connecting portion 41 side of the outer peripheral side protruding portion 42 and a surface (upper surface) 430 on the connecting portion 41 side of the inner peripheral side protruding portion 43 are a pair of the concave groove portions 401. The side wall surface is formed.

  The pair of concave grooves 401, 401 are formed so as to accommodate the edge portions on both sides of the slit 33 in the corrugated tube 3. In the state in which the edge portions on both sides of the slit 33 are accommodated in the pair of concave grooves 401, 401, the connecting portion 41 is disposed in the slit 33, and the outer peripheral projection 42 is along the outer peripheral surface of the corrugated tube 3. And covers the outer portions of the edge portions on both sides of the slit 33 (more specifically, the surface 420 on the connecting portion 41 side of the outer peripheral projection 42 is the outer portion of the edge portions on both sides of the slit 33. Further, the inner peripheral projection 43 is disposed along the inner peripheral surface of the corrugated tube 3 to cover the inner portions of the edge portions on both sides of the slit 33 (more Specifically, the surface 430 of the inner peripheral side projection 43 on the connecting portion 41 side comes into contact with or close to the inner portions of the edge portions on both sides of the slit 33). Thus, the path maintaining member 4 is attached along the longitudinal direction of the corrugated tube 3 by accommodating the edge portions on both sides of the slit 33 in the pair of concave grooves 401, 401 of the path maintaining member 4. Will be. When the path maintaining member 4 is attached, the corrugated tube 3 is integrated with the path maintaining member 4 while being bent along the shape of the path maintaining member 4.

  In addition, the outer side surface (surface on the opposite side to the connection part 41) of the outer peripheral side protrusion part 42 has a refracting surface along the outer peripheral surface of the corrugated tube 3 in a state where the path maintaining member 4 is attached to the corrugated tube 3. Presents. However, the outer side surface of the outer peripheral projection 42 is not necessarily limited to this, for example, an arcuate curved surface along the outer peripheral surface of the corrugated tube 3 in a state where the path maintaining member 4 is attached to the corrugated tube 3. May be present.

  The width dimension of each concave groove 401 is substantially equal to or larger than the difference between the outermost peripheral portion of the annular convex portion 31 and the innermost peripheral portion of the annular concave portion 32 in the radial direction of the corrugated tube 3 in the widest portion. It is set to a size of (slightly large). Further, the width dimension of the concave groove portion 401 is substantially equal to or larger than the difference between the outermost peripheral portion of the annular concave portion 32 and the innermost peripheral portion of the annular concave portion 32 in the radial direction of the corrugated tube 3 in the narrowest portion. It is set to a size of (slightly large). In addition, the depth dimension of the recessed groove part 401 should just be a grade which can be accommodated in the state which positioned the edge part of the corrugated tube 3 in the radial direction, and there is no limitation in particular.

  As described above, the surface 420 on the connecting portion 41 side of the outer peripheral projection 42 is in contact with or close to the outer portion of the edge of the slit 33 in a state where the path maintaining member 4 is attached to the corrugated tube 3. This is covered (hereinafter, this surface 420 is also referred to as “outer facing surface 420”). The outer facing surface 420 includes a convex portion 51 (a convex portion 51 extending perpendicular to the extending direction of the concave groove portion 401) and a concave portion 52 (an extension of the concave groove portion 401) along the extending direction of the concave groove portion 401. Concave portions 52) extending perpendicularly to the existing direction are formed in a wave shape (uneven surface) formed by alternately repeating at an equal pitch.

  Here, the tops of the respective ridges 51 are rounded into a convex arc shape in the cross section, and the bottoms of the respective concave ridges 52 are rounded into a concave arc shape in the cross section, and the outer facing surface 420 is smooth as a whole. It is formed in a simple wave shape.

  Further, the pitch of the ridges 51 (the distance between the top of the ridges 51 and the top of the ridges 51 adjacent to each other across the ridges 51 and the recesses 52) d1 is corrugated. In the tube 3, the pitch of the annular recess 32 (the center of the annular recess 32 (the center along the extending direction of the corrugated tube 3)) and the center of the annular recess 32 adjacent to each other with the annular recess 32 sandwiched between the annular protrusions 31. The distance between them is equal to e1. As a result, each protrusion 51 can mesh with each annular recess 32, and each recess 52 can mesh with each annular protrusion 31.

  However, in the state in which the convex strip 51 and the concave strip 52 are engaged with the annular concave portion 32 and the annular convex portion 31, the middle of the ridge line portion that extends from the top of the convex strip 51 to the bottom of the concave strip 52. It is preferable that the position A is in contact with the edge of the top end surface of the annular protrusion 31 and the topmost portion of the ridge 51 is close to or in contact with the annular recess 32. That is, the height difference between the position A and the topmost portion of the ridge 51 (the difference in height between the position A and the topmost portion of the ridge 51) d2 is the annular protrusion 31 and the annular recess 32. It is preferable that it is below e2 or less (difference of the height direction of the annular convex part 31 and the annular recessed part 32) e2.

  In FIG. 2, a state in which the outer facing surface 420 abuts on the outer portion of the corrugated tube 3, and the convex strip 51 and the concave strip 52 are engaged with the annular concave portion 32 and the annular convex portion 31 is shown. However, in a state where the path maintaining member 4 is attached to the corrugated tube 3 (natural state), a slight gap may be formed between the outer facing surface 420 and the outer portion of the corrugated tube 3 (FIG. 4). (See the upper row).

<2. Manufacture of wire harness 100>
The process of manufacturing the wire harness 100 will be described with reference to FIG. FIG. 3 is an explanatory diagram of the process.

  First, the corrugated tube 3 is opened by the slit 33, and the wire harness main body 1 is accommodated in the corrugated tube 3.

  Subsequently, the path maintaining member 4 is attached to the corrugated tube 3. Specifically, the corrugated tube 3 is opened by the slit 33, and the edge portions on both sides of the slit 33 of the corrugated tube 3 are accommodated in the pair of concave grooves 401, 401. In this step, for example, the opening of the pair of concave grooves 401 and 401 at either end along the extending direction of the path maintaining member 4 (which may be either end of both ends in the extending direction). From each of the ends, each of the edge portions on both sides of the slit 33 at one end portion along the extending direction of the corrugated tube 3 is inserted, and the path maintaining member 4 is relatively moved along the extending direction of the slit 33. This is done by sliding the target.

  When the edge portions on both sides of the slit 33 are accommodated in the pair of concave grooves 401, 401 over the entire extending direction of the corrugated tube 3, the path maintaining member 4 is attached to the corrugated tube 3. (The state shown in FIG. 1). As described above, when the path maintaining member 4 is attached, the corrugated tube 3 is integrated with the path maintaining member 4 while being bent along the shape of the path maintaining member 4.

  By attaching the route maintaining member 4 to the corrugated tube 3, the wire harness main body 1 is attached to the corrugated tube 2 with the route maintaining member. By mounting the corrugated tube 2 with a path maintaining member, the mounting portion of the corrugated tube 2 with the path maintaining member in the wire harness main body 1 is maintained in a bent shape that follows the bent shape of the path maintaining member 4. That is, in the wire harness 100 configured in this way, the wire harness main body 1 is covered and protected by the corrugated tube 3 and is maintained by the path maintaining member 4 so as to draw a path bent into a predetermined shape. The Therefore, if the path | route maintenance member 4 is formed in the shape match | combined with the installation location of the wire harness main-body part 1, the wire harness main-body part 1 will be maintained by the fixed path | route according to the said installation location.

  After that, if necessary, a tie band, an adhesive tape, or the like is wound around the outer periphery of the corrugated tube 3 so that the closed state of the corrugated tube 3 is maintained and the corrugated tube 3 and the path maintaining member 4 are integrated. The activated state may be maintained. In addition to the above, the closed state of the corrugated tube 3 may be maintained by a lock structure or the like provided in the corrugated tube 3 itself.

<3. Laying aspect of wire harness 100>
An aspect of assembling the wire harness 100 to a vehicle or the like will be described with reference to FIG. FIG. 4 is a diagram schematically showing the state of the cross section of the wire harness 100 (cross section taken along the line KK in FIG. 1) when a force that twists the corrugated tube 2 with a path maintaining member in the circumferential direction is applied. It is.

  For example, the wire harness 100 is assembled in the vehicle in a state of being fixed to a vehicle body panel or the like at a mounting portion of the corrugated tube 2 with a path maintaining member. Specifically, the wire harness 100 includes, for example, a belt portion 91 that is wound around the corrugated tube 2 with a path maintaining member, and a clip portion 92 that is pushed into and fixed to a locking hole formed in a vehicle body panel or the like. The fixing member (for example, a clamp member) 9 that is configured is fixed to the vehicle body (see FIG. 1).

  Here, the fixing member 9 ideally needs to be accurately attached at a position determined in the circumferential direction of the corrugated tube 2 with a path maintaining member. , There is a possibility of misalignment within the tolerance range. That is, as shown in the drawing, the fixing member 9 that should be attached to the corrugated tube 2 with a path maintaining member so that the clip portion 92 is oriented in the direction of, for example, 6 o'clock, There is a possibility of being attached to the corrugated tube 2 with a path maintaining member so as to be directed in a direction shifted from the time direction (state shown in the upper part of FIG. 4). When the clip portion 92 attached to the corrugated tube 2 with the path maintaining member is pushed in a locking hole formed in the vehicle body panel P in a state where the position is shifted in the circumferential direction in this manner, the clip portion 92 is fixed to the vehicle body panel P ( In the state shown in the lower part of FIG. 4, a force (twisting force) is applied to the corrugated tube 2 with a path maintaining member in a circumferential direction.

  Here, the corrugated tube 3 is easier to deform than the path maintaining member 4. Therefore, when a torsional force is applied to the corrugated tube 2 with a path maintaining member, the corrugated tube 3 may be twisted and deformed more greatly than the path maintaining member 4 in a part in the extending direction. Then, in a part along the extending direction of the slit 33, the outer side portion of the one end edge portion is in a state of strongly hitting the outer facing surface 420. Here, if the surface against which the outer portion of the end edge abuts is flat, the annular protrusion 31 may be crushed by the flat surface, and as a result, the slit 33 extends in the extending direction. There is a possibility that a gap may be formed between the path maintaining member and the corrugated tube 3 in a part along.

  Here, as described above, the outer facing surface 420 is formed in a wave shape. Therefore, even if the torsional force is applied to the corrugated tube 2 with the path maintaining member and the outer side portion of the one end edge of the slit 33 strongly hits the outer facing surface 420, the annular convex portion 31 is recessed. Since it can enter into the strip portion 52, the annular convex portion 31 is not easily crushed, and a gap is not easily formed between the path maintaining member 4 and the corrugated tube 3.

<4. Effect>
In the above embodiment, the wire harness main body 1 can be covered with the corrugated tube 3, and the path can be kept constant by the path maintaining member 4 attached to the corrugated tube 3. In this configuration, it is not necessary to cover the wire harness main body 1 with the path maintaining member 4 itself, so that the path maintaining member 4 itself can be made small and simple. For this reason, the path | route maintenance member 4 formed so that a shape may be maintained along a longitudinal direction can be formed at comparatively low cost. Therefore, the route can be kept constant while covering the wire harness main body 1 at a lower cost. In addition, as a result of maintaining the wire harness main body 1 in a bent state, when the wire harness main body 1 is assembled to a vehicle or the like, the number of attachment points to the vehicle can be reduced. In other words, the wire harness main body 1 can be maintained in a constant bent shape even if the number of places where the corrugated tube 2 with a path maintaining member is attached is small. For this reason, the number of clamp members and the like for attaching and fixing the wire harness main body 1 can be reduced, and from this point of view, the production cost and the attachment work cost of the corrugated tube 2 with a path maintaining member can be reduced. Reduction can be achieved.

  Further, in the above embodiment, the path maintaining member 4 has the edge portions on both sides of the slit 33 of the corrugated tube 3 accommodated in the pair of concave grooves 401 and 401 formed along the longitudinal direction thereof. By being in a state, it is attached along the longitudinal direction of the corrugated tube 3. According to this configuration, since the attachment positional relationship between the corrugated tube 3 and the path maintaining member 4 is stabilized, it is easy to maintain the corrugated tube 3 in an expected shape along the shape of the path maintaining member 4. Further, the path maintaining member 4 is unlikely to come off from the corrugated tube 3. Furthermore, since the slit 33 is blocked by a part of the path maintaining member 4, it is difficult for the wire harness body 1 in the corrugated tube 3 to be detached from the slit 33 to the outside.

  Further, in the above embodiment, of the pair of side wall surfaces 420 and 430 of the recessed groove portion 401 in which the edge portions on both sides of the slit 33 of the corrugated tube 3 are accommodated, the outer portion of the edge portion of the slit 33 is used. A covering side wall surface (outer facing surface) 420 is formed in a wave shape. According to this configuration, for example, when the wire harness 100 is assembled to a vehicle, even if a force that twists the corrugated tube 2 with a path maintaining member in the circumferential direction is applied to the corrugated tube 2 between the path maintaining member 4 and the corrugated tube 3. It is difficult to do. Therefore, the wire harness main body 1 can be stably covered without being exposed.

  In the above embodiment, since the pitch d1 of the ridges 51 coincides with the pitch e1 of the annular recess 32, the outer facing surfaces 420 are edge portions on both sides of the slit 33 of the corrugated tube 3. In the state where the outer portion of the ridge is covered, the ridge 51 engages with the annular recess 32 and the ridge 52 engages with the annular protrusion 31. According to this configuration, the crushing of the annular convex portion 31 is effectively suppressed, and the generation of a gap between the road maintaining member 4 and the corrugated tube 3 can be particularly effectively suppressed.

  Moreover, in said embodiment, while the top part of each convex strip part 51 is rounded by the cross-sectional convex arc shape, the bottom part of each concave strip part 52 is rounded by the cross-sectional concave arc shape (namely ,. The top of the ridge 51 and the bottom of the dent 52 are rounded). According to this configuration, for example, when the path maintaining member 4 is relatively slid along the extending direction of the slit 33 and the edge portions on both sides of the slit 33 are accommodated in the concave groove 401, the path maintaining member is used. 4 can be moved relatively smoothly. Therefore, it is difficult to place a burden on the work of attaching the path maintaining member 4 to the corrugated tube 3.

<5. Modification>
As shown in FIG. 5, the path maintaining member 4 according to the above embodiment may be shared among a plurality of types of corrugated tubes 3 a, 3 b, 3 c having different product numbers. However, these plural types of corrugated tubes 3a, 3b, 3c have at least the same pitch e1 of the annular recesses 32a, 32b, 32c, and other dimensions (for example, outer diameter, inner diameter, etc.) are different. . In this case, the pitch d1 of the corrugated ridge 51 formed on the outer facing surface 420 of the path maintaining member 4 is the same as the pitch e1 of the annular recesses 32a, 32b, 32c. Moreover, what is necessary is just to prescribe | regulate the height of the protruding item | line part 51 according to the corrugated tube 3a where the depth of an annular recessed part is the shallowest, for example. That is, the position A (the position A where the edge of the top end surface of the annular protrusion 31a abuts in the state where the protrusion 51 and the recess 52 are engaged with the annular recess 32a and the annular protrusion 31a) and the protrusion The step dimension d2a in the height direction with respect to the topmost part of the portion 51 is set to be equal to or less than the step dimension e2a in the height direction between the annular convex part 31a and the annular concave part 32a (most preferably so as to coincide with the step dimension e2). Stipulate).

  Further, the wave shape of the outer facing surface 420 is not necessarily limited to that described above. For example, at least one of the ridges and the recesses may be formed in a triangular cross section or a trapezoidal cross section. However, in consideration of the workability of attaching the path maintaining member 4 to the corrugated tube 3, it is preferable that the outer facing surface 420 has a wave shape that is as smooth as possible. The corners included in are preferably rounded.

  In the above embodiment, the pitch d1 of the ridges 51 is the same as the pitch e1 of the annular ridges 31, but the pitch d1 of the ridges 51 is not necessarily the pitch e1 of the annular ridges 31. The dimensions may not be equal to. However, in order to suppress the crushing of the annular convex portion 31 as effectively as possible, it is preferable that the convex portion 51 is as few as possible where the convex portion 51 is opposed to a portion other than the annular concave portion 32. It is particularly preferable that the meshing is possible. For this purpose, it is preferable that the pitch d <b> 1 of the ridge 51 is an integral multiple of the pitch e <b> 1 of the annular protrusion 31.

  In the above-described embodiment, the outer facing surface 420 has a wave shape over the entire area along the extending direction of the outer circumferential protrusion 42, but the outer facing surface 420 extends from the outer protrusion 42. It may be a wave shape only in a partial region along the current direction. For example, the outer facing surface 420 is waved only in a specific region such as an end portion along the extending direction of the route maintaining member 4, a portion where the route maintaining member 4 is bent with a relatively small bending radius, or a linear portion. It is good also as a shape.

  Moreover, in said embodiment, the part in which the pair of groove parts 401 and 401 were formed among the path | route maintenance members 4 may be the whole longitudinal direction of the path | route maintenance member 4, and it followed the longitudinal direction. It may be a part.

  In the above embodiment, the path maintaining member 4 is a long member that is bent at least partially along the longitudinal direction. However, the path maintaining member is a bent part. It may be a linear shape without any.

  Moreover, in said embodiment, the path | route maintenance member 4 should just be a member which can maintain the shape along a elongate direction, and does not necessarily need to be a member formed by metal-molding resin. For example, the path maintaining member is a long member having elasticity formed from rubber, elastomer, and the like, and embedded in the extending direction of the long member, is plastically deformable, and has a shape after plastic deformation. You may comprise from the shape maintenance line which can be maintained. In this case, the shape maintaining wire can be formed using a metal wire (iron wire, conductive wire, stainless steel wire, or alloy wire thereof) or a resin having a certain degree of rigidity after plastic deformation. In the case of this configuration, the shape maintaining line can be plastically deformed to maintain the shape along the longitudinal direction of the path maintaining member.

  Moreover, in one wire harness 100, the route maintenance member etc. which were demonstrated in said embodiment and the modification may be mixed and used.

  In addition, each structure demonstrated by said each embodiment and each modification can be suitably combined unless it mutually contradicts.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Wire harness 1 Wire harness main-body part 2 Corrugated tube with a path | route maintenance member 3 Corrugated tube 31 Annular convex part 32 Annular recessed part 33 Slit 4 Path | route maintenance member 401 Concave groove part 41 Connection part 42 Outer peripheral side protrusion part 43 Inner peripheral side protrusion part 420 Outer Opposite surface 51 ridge 52 dent

Claims (5)

Corrugated tubes in which annular convex portions and annular concave portions are alternately formed along the longitudinal direction, and slits are formed along the longitudinal direction;
It is a long member formed so as to maintain the shape along the longitudinal direction, and the edge portions on both sides of the slit of the corrugated tube are accommodated in a pair of concave grooves formed along the long direction. A route maintaining member attached along the longitudinal direction of the corrugated tube,
With
Of the pair of side wall surfaces of the concave groove portion, the side wall surfaces covering the outer portions of the edge portions on both sides of the slit are alternately formed with the convex stripe portions and the concave stripe portions along the extending direction of the concave groove portion. It is formed in a wave shape formed repeatedly,
Corrugated tube with path maintenance member. It is a corrugated tube with a path maintenance member according to claim 1,
The protruding portion is formed so as to be able to mesh with the annular recess,
Corrugated tube with path maintenance member. It is a corrugated tube with a path maintenance member according to claim 2,
The pitch of the ridges coincides with the pitch of the annular recesses,
Corrugated tube with path maintenance member. It is a corrugated tube with a path maintenance member according to any one of claims 1 to 3,
The top of the ridge is rounded in a cross-sectional convex arc shape, and the bottom of the concave ridge is rounded in a cross-section concave arc,
Corrugated tube with path maintenance member. A corrugated tube with a path maintaining member according to any one of claims 1 to 4,
A wire harness body having at least one electric wire, and being inserted into the corrugated tube with a path maintaining member;
Wire harness comprising

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