JP7288364B2 - Outer body for electric wire and wire harness with outer body - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer casing for electric wires and a wire harness with an outer casing.

2. Description of the Related Art Conventionally, there has been proposed a wire sheathing body (protector) that is attached to the outer periphery of a wire harness that is routed in a vehicle or the like (for example, Patent Literature 1). In the protector described in Patent Document 1, a plate member is folded in a manner surrounding the wire harness, and the overlapping portions are engaged with an engaging part, thereby accommodating the wire harness in a cylindrical accommodation portion and protecting the wire harness from external force. are protecting.

JP 2017-55510 A

The electric wire sheathing body described in Patent Document 1 causes an increase in manufacturing cost due to its configuration. On the other hand, the electric wire armoring body 500 shown in FIG. 11 can improve the strength while reducing the manufacturing cost.

FIG. 11 is a perspective view of a wire armoring body 500 according to a comparative example. As shown in FIG. 11 , the electric wire armoring body 500 is formed of a sheet and is folded to form a tubular accommodating portion 502 that accommodates the wire harness 501 . A wall portion constituting the housing portion 502 includes a side wall portion 506 having a protrusion 504 formed therein and an upper wall portion 510 having a hole portion 508 formed therein. At least one of the protrusion 504 and the hole 508 is deformed and the protrusion 504 is inserted into the hole 508 to engage the side wall 506 and the upper wall 510 of the accommodation portion 502 . The hole 508 has a restricting piece 512 that reduces the opening area in a normal state, and allows the protrusion 504 to be inserted into the hole 508 when elastically deformed. The restricting piece 512 can restrict the movement of the projection 504 once inserted into the hole 508 .

However, at the time of assembling the electric wire armoring body 500, inserting the projecting portion 504 into the hole portion 508 requires familiarity due to the presence of the restricting piece 512, and the assembling may take time.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an outer body for electric wires and a wire harness with the outer body, which can be improved in strength and can be easily assembled. .

In order to solve the above-described problems and achieve the object, a wire armoring body according to an aspect of the present invention provides a bottom wall extending in a first direction and erected from both ends of the bottom wall in a second direction. a main sheet having a pair of side walls; a protrusion having a neck protruding in the second direction from edges of the pair of side walls and a first head protruding from the neck in one of the first directions; a lid sheet and a retainer disposed in superimposed relation to the edge of the side wall, the lid sheet being fitted to the neck from a third direction intersecting the first direction and the second direction. The retainer has a neck fitting portion that engages with the neck and positions the lid sheet in the first direction. each of the protrusions protruding from the second direction is inserted in the second direction, and the elongated holes are arranged at positions slid in the other of the first directions to position the pair of side walls in the third direction. characterized by

In the electric wire outer covering according to one aspect of the present invention, the retainer includes an engaging portion that engages with an engaged portion provided on the lid sheet, and the engaging portion engages with the engaged portion. It is characterized by being positioned in the first direction by mating.

According to an aspect of the present invention, there is provided an electric wire outer covering, wherein the retainer and the lid sheet are joined together.

In the electric wire outer covering according to one aspect of the present invention, the lid sheet and the retainer are arranged substantially without a gap between the edge of the side wall and the first head and are positioned in the second direction. It is characterized by

In the electric wire armoring body according to one aspect of the present invention, the protrusion includes a second head that protrudes from the neck in the other of the first directions, and between the edge of the side wall and the second head. It is characterized in that the lid sheets are arranged without any gaps.

In the electric wire armoring body according to one aspect of the present invention, the pair of protrusions provided on the edges of the pair of side walls, the pair of neck fitting portions, and the pair of long holes are arranged in parallel in the third direction. It is characterized by

In the electric wire armoring body according to one aspect of the present invention, the mutual engagement portion including the protrusion provided on the edge of the side wall, and the neck fitting portion corresponding to the protrusion and the long hole is the first A plurality of the side walls are provided along the direction, and the side walls on both sides are arranged at positions shifted with respect to the first direction.

In the electric wire outer covering according to one aspect of the present invention, the lid sheet includes a protrusion insertion hole through which the protrusion can be inserted and which communicates with the neck fitting portion in the third direction.

According to an aspect of the present invention, there is provided an electric wire outer covering, wherein the main sheet, the lid sheet and the retainer are thermoplastic resin foam sheets.

A harness with an exterior body according to an aspect of the present invention includes the wire exterior body described above, and the wire exterior body accommodates the wire harness in an accommodation portion surrounded by the main sheet and the lid sheet. It is characterized by being attached to the outer circumference of the wire harness.

INDUSTRIAL APPLICABILITY The strength of the electric wire armor and the wire harness with the armor according to the present invention can be improved, and assembly is easy.

FIG. 1 is a perspective view of an electric wire armor and a wire harness with an armor according to an embodiment. FIG. 2 is a partial cross-sectional enlarged perspective view of the wire armor and the wire harness with the armor. FIG. 3 is a plan view of the main seat in the unfolded state. FIG. 4 is an exploded perspective view of the electric wire outer covering. FIG. 5 is a partial cross-sectional view showing projections, holes, elongated holes, and peripheral portions thereof. 6A and 6B are diagrams showing a wire armoring body according to a first modification, in which FIG. 6A is an enlarged perspective view of a partial cross section of the wire armoring body, and FIG. is an enlarged view of. 7A and 7B are diagrams showing an electric wire armoring body according to a second modification, in which FIG. It is an enlarged view of a joining part. FIG. 8 is an exploded perspective view of a wire armoring body according to a third modification. FIG. 9 is a partial cross-sectional enlarged perspective view of a wire armoring body according to a third modification. FIG. 10 is a perspective view of a wire armoring body according to a fourth modification. FIG. 11 is a perspective view of a wire outer covering according to a comparative example.

EMBODIMENT OF THE INVENTION Below, embodiment of the exterior body for electric wires concerning this invention and a wire harness with an exterior body is described in detail based on drawing. In addition, this invention is not limited by this embodiment.

FIG. 1 is a perspective view of an electric wire armor 10 and an armor-equipped wire harness 11 according to an embodiment of the present invention, and FIG. It is a perspective view.

As shown in FIGS. 1 and 2 , the wire sheathing body 10 includes a housing portion 14 for housing a wire harness 12 and protects the wire harness 12 . That is, the wire sheathing body 10 acts as a protector. A wire harness 11 with an armor is composed of an electric wire armor 10 and a wire harness 12 . The wire sheath 10 is attached to the outer periphery of the wire harness 12 . The wire harness 12 is conventionally known, and is composed of one or more electric wires (including optical fibers and the like). The wire armor 10, the wire harness 11 with the armor, and the wire harness 12 extend in the X direction (first direction). One of the X directions is the X1 direction, and the other is the X2 direction.

The wire sheathing body 10 includes a bent main sheet 16 , a lid sheet 18 forming a housing portion 14 together with the main sheet 16 , and a retainer 20 that fixes the lid sheet 18 and retains the shape of the housing portion 14 . Further, the electric wire sheathing body 10 has an assembling mechanism portion 22 that assembles and holds the main sheet 16 , the lid sheet 18 and the retainer 20 . The assembly mechanism part 22 is formed by parts of the main sheet 16, the lid sheet 18 and the retainer 20 (projections 28, holes 30 and elongated holes 36, which will be described later), and is provided in plurality along the X direction.

The main sheet 16 has a bottom wall 24 extending in the X direction and a pair of side walls 26 extending from both ends 24a of the bottom wall 24 in the Z direction (second direction). The Z direction is the height direction in FIGS. The bottom wall 24 is not necessarily lower and the side walls 26 are not necessarily lateral. Also, the description of the vertical direction in the following description is based on the drawings, and does not limit the actual arrangement direction.

FIG. 3 is a plan view of the main seat 16 in the unfolded state. As shown in FIG. 3, the main sheet 16 has a plate-like base material, and is formed by cutting out the base material and then bending both ends 24a.

FIG. 4 is an exploded perspective view of the electric wire armor 10. FIG. As shown in FIG. 4, the main sheet 16 has projections 28 projecting in the Z direction from edges 26a of a pair of side walls 26, respectively. The projection 28 has a neck 28a projecting from the edge 26a in the Z direction, a first head 28b projecting from the neck 28a in the X1 direction, and a second head 28c projecting in the X2 direction. The protrusion 28 is T-shaped by a neck 28a, a first head 28b and a second head 28c. A pair of protrusions 28 are provided in parallel in the Y direction (third direction) for one assembly mechanism portion 22 .

The Y direction is a direction perpendicular to the X and Z directions. Although the X-direction, Y-direction and Z-direction are orthogonal to each other, they are not necessarily orthogonal and may intersect each other.

The upper end of the first head 28b in the X1 direction and the upper end of the second head 28c in the X2 direction are arcuate. The gap between edge 26a and first head 28b is slightly larger than the total thickness of lid sheet 18 and retainer 20 (see FIG. 5). The gap between the edge 26a and the second head 28c is slightly larger than the thickness of the lid sheet 18. As shown in FIG.

Lid sheet 18 has an X-direction dimension substantially equal to bottom wall 24 and a Y-direction dimension slightly larger than bottom wall 24 . Lid sheet 18 has a hole 30 . The hole portion 30 has a projection insertion hole 30a through which the projection 28 can be inserted in the Z direction, and a neck fitting portion 30b communicating with the projection insertion hole 30a in the Y direction. Locking pieces 32 are formed at the X-direction opposite edges at the boundary between the projection insertion hole 30a and the neck fitting portion 30b. The locking pieces 32 are formed so as to protrude from the opposing edges of the boundary portion so as to approach each other along the X direction, and the dimension between the locking pieces 32 (dimension in the X direction) is greater than the width of the neck 28a. is also slightly smaller.

The protrusion insertion hole 30a is an elongated hole formed to be larger in the X direction than in the Y direction. The projection insertion hole 30 a is formed such that the dimension in the X direction is slightly larger than the width dimension of the projection 28 .

The neck fitting portion 30b is an elongated hole formed to be larger in the X direction than in the Y direction. The neck fitting portion 30b has a dimension in the X direction slightly larger than the width dimension of the neck 28a, and restricts movement of the first head 28b and the second head 28c in the Y direction.

In the cover sheet 18 of the electric wire exterior body 10, in the hole 30, the projection insertion hole 30a is provided on the side closer to the center position of the width in the Y direction of the cover sheet 18, that is, on the inner side, and the neck fitting portion 30b is provided on the far side, That is, it is provided outside. A pair of hole portions 30 are provided in parallel in the Y direction for one assembly mechanism portion 22 . The lid sheet 18 is formed with rectangular lock holes (engaged portions) 34a and 34b. The lock hole 34a is provided near the end in the X1 direction, and the lock hole 34b is formed near the end in the X2 direction.

The retainer 20 has the same X and Y dimensions as the lid sheet 18 . Long holes 36 are formed in the retainer 20 in the vicinity of both ends in the Y direction (positions shifted in the third direction) corresponding to the projections 28 . The long hole 36 has a dimension in the X direction slightly larger than that of the neck fitting portion 30b, and the projection 28 can be inserted in the Z direction. A pair of long holes 36 are provided in parallel in the Y direction for one assembly mechanism portion 22 . The retainer 20 is provided with rectangular locking pieces (engaging portions) 38a and 36b. The lock piece 38a is provided at the end in the X1 direction, and the lock piece 38b is provided at the end in the X2 direction. Each of the locking pieces 38a and 36b is formed by slightly bending a rectangular portion between two cuts in the X direction downward.

The lid sheet 18 and the retainer 20 are placed in superimposed relation to the edges 26a of the pair of side walls 26. As shown in FIG. In the case of the electric wire outer packaging 10, the lid sheet 18 is on the lower side (that is, the side in contact with the edge 26a), and the retainer 20 is on the upper side. However, in the case of an electric wire sheathing body 10C (see FIGS. 8 and 9), which will be described later, the lid sheet and the retainer are arranged in the reverse order.

Various materials can be applied to the main sheet 16, the lid sheet 18 and the retainer 20, but at least one of them is preferably made of a foam sheet. Of course, the main sheet 16, lid sheet 18 and retainer 20 may all be foam sheets. Examples of foamed sheets include thermoplastic resin foamed sheets. The resin type of the thermoplastic resin foam sheet is not particularly limited as long as it is a thermoplastic resin. Examples include polyethylene resin, polypropylene resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyamide resin, polyphenylene sulfide resin, and polystyrene. Examples include resins, polyvinyl chloride resins, polyvinyl acetate resins, polytetrafluoroethylene resins, acrylic resins, and the like.

The density of the thermoplastic resin foam sheet is not particularly limited, but is preferably 200 kg/m3 ^or more and 1000 kg/m3 or more, in order to prevent anisotropy of mechanical properties and improve the degree of freedom in designing the wire sheathing body 10. It is preferably ³ or less, more preferably 300 kg/m ³ or more and 600 kg/m 3 or less, and more preferably 350 kg/m ^{3 or} more and 550 kg/m ³ from the viewpoint of further improving the balance between lightness and mechanical strength. The following are particularly preferred.

The thermoplastic resin foam sheet may have a non-foam layer on both sides or one side. That is, the foamed thermoplastic resin sheet may have a structure having a foamed layer and a non-foamed layer formed on the foamed layer. By forming the non-foam layer on the surface of the thermoplastic resin foam sheet, the flexural elasticity of the wire sheathing body 10 is improved, and the protection performance of the wire harness 12 to be accommodated is further improved. From the viewpoint of further improving the flexural elasticity of the electric wire outer covering 10, a configuration of a three-layer structure having non-foamed layers on both sides of the thermoplastic resin foam sheet is preferable. Although the thickness of the non-foamed layer formed on the thermoplastic resin foamed sheet is not particularly limited, it is preferably, for example, 10 μm or more and 100 μm or less.

The cell number density of the foam layer of the thermoplastic resin foam sheet is not particularly limited, but the lower limit is, for example, 800 cells/mm ³ or more from the viewpoint of more reliably preventing anisotropy of mechanical properties. is preferred, and 1000/mm ³ or more is particularly preferred. On the other hand, the upper limit of the bubble number density is preferably, for example, 10 ¹⁰ /mm ³ or less from the viewpoint of obtaining excellent mechanical strength.

The thicknesses of the main sheet 16, the lid sheet 18 and the retainer 20 are not particularly limited, but from the viewpoint of further improving the balance between the ease of bending and the mechanical strength, they are preferably 0.80 mm or more and 5.0 mm or less. It is preferably 1.0 mm or more and 2.5 mm or less, particularly preferably.

The assembly mechanism 22 is formed of a pair of projections 28, holes 30, and long holes 36 arranged in parallel in the Y direction, and has high strength by supporting each other against an external force in the Y direction. In the electric wire armoring body 10, a plurality of assembly mechanism parts 22 are provided according to the length in the X direction, but at least one assembly mechanism part 22 may be provided depending on the conditions. In the following description of the process of assembling the electric wire sheathing body 10, one assembling mechanism 22 will be described for the sake of easy understanding, but actually a plurality of assembling mechanisms 22 are assembled at the same time.

In the process of assembling the electric wire outer covering 10 , first, the lid sheet 18 is assembled to the main sheet 16 . When assembling the cover sheet 18, the protrusions 28 are inserted through the protrusion insertion holes 30a in the Z direction, and then the pair of protrusions 28 are pressed outward to pass the necks 28a between the locking pieces 32 to the neck fitting portion. 30b. That is, the neck 28a is assembled so as to pass between the pair of locking pieces 32 in the Y direction. The neck fitting portion 30b is fitted to the neck 28a from the Y direction and engages with the neck 28a to position the lid sheet 18 in the X direction. Also, the pair of locking pieces 32 provisionally positions the pair of side walls 26 in the Y direction. At this point, the lid sheet 18 is placed substantially without gap between the edge 26a of the side wall 26 and the second head 28c, and the lid sheet 18 is provisionally positioned in the Z direction.

The neck fitting portion 30b may be engaged with the neck 28a by making the dimension in the X direction equal to that of the neck 28a, or making it slightly smaller to the extent that it can be elastically deformed and fitted. In this case, the pair of locking pieces 32 may be omitted.

In the process of assembling the electric wire armoring body 10, the retainer 20 is further assembled. To assemble the retainer 20, the pair of protrusions 28 are inserted into the pair of elongated holes 36 in the Z direction, and then the retainer 20 is slid in the X2 direction until the end faces of the elongated holes 36 in the X1 direction come into contact with the neck 28a. Thereby, the pair of side walls 26 are positioned in the Y direction by the retainer 20 via the projections 28 .

The lock piece 38a is inserted into the lock hole 34a and locked (see FIG. 1), and the lock piece 38b is inserted into the lock hole 34b and locked. As a result, both ends of the retainer 20 in the X direction are fixed to the lid sheet 18, and floating can be prevented. Further, the retainer 20 is prevented from returning in the X1 direction by locking the lock piece 38a into the lock hole 34a, and the retainer 20 is positioned in the X direction.

FIG. 5 is a partial cross-sectional view showing projections 28, holes 30, elongated holes 36, and their surroundings. As shown in FIG. 5, the lid sheet 18 and the retainer 20 are arranged substantially without a gap between the edge 26a of the side wall 26 and the first head 28b, and the lid sheet 18 is positioned in the Z direction. Further, the lid sheet 18 is arranged substantially without any gap between the edge 26a of the side wall 26 and the second head 28c, so that the lid sheet 18 is more reliably positioned in the Z direction. However, the second head 28c may be omitted depending on conditions.

A clearance is provided so that the Z-direction dimension between edge 26a of side wall 26 and first head 28b is slightly greater than the combined dimension of lid sheet 18 and retainer 20. As shown in FIG. Similarly, clearance is provided such that the Z-direction dimension between the edge 26a of the side wall 26 and the second head 28c is slightly larger than the dimension of the lid sheet 18. As shown in FIG. These clearances reduce the resistance during assembly of the main sheet 16, the lid sheet 18 and the retainer 20, making assembly easier.

In the electric wire armor 10 and the wire harness 11 with the armor thus configured, the neck fitting portion 30b of the lid sheet 18 is fitted to the neck 28a in the Y direction, so the lid sheet 18 is fixed in the X direction. be done. Also, the projections 28 are inserted through the pair of elongated holes 36 of the retainer 20, respectively, and are arranged at positions slid in the X2 direction, thereby fixing the pair of side walls 26 in the Y direction. Therefore, the walls in four directions forming the housing portion 14 are securely fixed to each other, resulting in high strength. The fitting operation of the neck fitting portion 30b and the neck 28a, and the assembly operation of inserting the protrusions 28 into the long holes 36 and sliding the retainer 20 in the X2 direction are easy and do not require familiarity, thus shortening the assembly time. can be planned.

In the process of assembling the electric wire sheathing body 10, the lid sheet 18 and the retainer 20 may be assembled with the wire harness 12 already arranged in the housing portion 14 of the main sheet 16, or the wires may be assembled after the lid sheet 18 and the retainer 20 are assembled. Harness 12 may be inserted into housing 14 . The lid sheet 18 and the retainer 20 are detachable from the main sheet 16, and the state of the wire harness 12 accommodated in the accommodation section 14 can be checked during maintenance. Further, the positioning of the retainer 20 in the X direction is not limited to the engagement between the lock pieces 38a, 36b and the lock holes 34a, 34b, and other engagement means (for example, hook type) may be used. The same applies to lock pieces 38Ca, 38Cb and lock holes 34Ca, 34Cb, which will be described later. The lid sheet 18 and the retainer 20 may be joined (welded, glued, double-sided tape, riveted, crimped, etc.) as necessary.

Next, electric wire armors 10A to 10D according to modifications will be described. Concerning the electric wire armoring bodies 10A to 10D, the same components as those of the electric wire armoring body 10 described above are given the same reference numerals, and detailed description thereof will be omitted. The same applies to each other between the electric wire armors 10A to 10D.

6A and 6B are diagrams showing an electric wire armoring body 10A according to a first modification, in which (a) is a partially enlarged perspective view of the electric wire armoring body 10A, and (b) is an electric wire armoring body 10A. 3 is an enlarged view of a hole portion 30A in FIG.

As shown in FIG. 6( a ), the electric wire outer covering 10</b>A includes a main sheet 16 , a lid sheet 18</b>A, and a retainer 20 . The lid sheet 18A replaces the lid sheet 18 (see FIG. 4), and has holes 30A instead of the holes 30 described above. The main seat 16 and retainer 20 are the same as described above.

As shown in FIG. 6B, the hole portion 30A includes a projection insertion hole 30a, a neck fitting portion 30b, and a pair of locking pieces 32, like the hole portion 30 (see FIG. 4). . However, in the hole portion 30, the protrusion insertion hole 30a is formed inside and the neck fitting portion 30b is formed outside the position of the pair of locking pieces 32. With the position of the locking piece 32 as a boundary, the protrusion insertion hole 30a is formed on the outside and the neck fitting portion 30b is formed on the inside. Therefore, in assembling the lid sheet 18A in the electric wire outer packaging 10A, after inserting the projections 28 into the projection insertion holes 30a of the hole portion 30A, the pair of projections 28 are pressed inward, respectively, and the necks 28a are engaged with the locking pieces. 32 is fitted into the neck fitting portion 30b (see FIG. 6(a)). Assembly of the retainer 20 is the same as in the above case.

7A and 7B are diagrams showing a wire armoring body 10B according to a second modification, in which (a) is a partially enlarged perspective view of the wire armoring body 10B, and (b) is a wire armoring body 10B. 3 is an enlarged view of the neck fitting portion 30b in FIG.

As shown in FIG. 7( a ), the wire sheathing body 10B includes a main sheet 16 , a lid sheet 18B, and a retainer 20 . The main seat 16 and retainer 20 are the same as described above.

The lid sheet 18B replaces the lid sheet 18 described above, and is provided with the neck fitting portion 30b (see FIG. 4) and a pair of locking pieces 32, but is not provided with the projection insertion holes 30a. do not have. That is, the neck fitting portion 30b opens sideways from between the pair of locking pieces 32. As shown in FIG. Therefore, in assembling the lid sheet 18B in the electric wire outer packaging 10B, after the projections 28 are arranged on the sides of the lid sheet 18B, the pair of projections 28 are pressed inward, and the necks 28a of the locking pieces 32 are pressed. The neck fitting portion 30b is fitted through the gap (see FIG. 6(b)). Assembly of the retainer 20 is the same as in the above case.

FIG. 8 is an exploded perspective view of a wire armoring body 10C according to a third modification, and FIG. 9 is a partially enlarged perspective view of a wire armoring body 10C according to the third modification.

As shown in FIGS. 8 and 9, the electric wire armoring body 10C includes a main sheet 16C, a retainer 20C, and a lid sheet 18C. The main sheet 16C, retainer 20C and lid sheet 18C replace the main sheet 16, retainer 20 and lid sheet 18 described above (see FIG. 4). While the lid sheet 18 is arranged between the outer cover 10C for electric wires, the retainer 20C is arranged between the edge 26a of the side wall 26 and the lid sheet 18C.

The main sheet 16C has projections 28C in place of the projections 28 (see FIG. 4). The projection 28C has a neck 28a and a first head 28b similar to the projection 28, and also has a second head 28Cc instead of the second head 28c. The second head 28Cc has the same dimension in the Y direction as the first head 28b, so that the lid sheet 18C and the retainer 20C can be arranged with almost no gap between the edge 26a of the side wall 26 and the second head 28Cc. there is

The retainer 20C has an elongated hole 36 like the retainer 20 (see FIG. 4). The retainer 20C is further provided with rectangular lock pieces 38Ca and 38Cb. The lock piece 38Ca is provided in the vicinity of the X1 direction end, and the lock piece 38Cb is provided in the vicinity of the X2 direction end. Each of the lock pieces 38Ca and 36Cb is formed by slightly bending a rectangular portion between two notches in the X direction upward.

Lid sheet 18C includes a neck fitting portion 30b similar to lid sheet 18B (see FIG. 7) described above. Locking pieces 32 are provided at both ends of the side opening of the neck fitting portion 30b. Rectangular lock holes 34Ca and 34Cb are also formed in the lid sheet 18C. The lock hole 34Ca is provided near the end in the X1 direction, and the lock hole 34Cb is formed near the end in the X2 direction. Also, the lid sheet 18C is slightly bent at the center folding portion 42 along the X direction.

When assembling the electric wire armoring body 10C, first, the retainer 20C is assembled to the main sheet 16C. At this time, the protrusion 28 is inserted into the long hole 36, and the retainer 20C is slid in the X2 direction until the end of the long hole 36 in the X1 direction contacts the neck 28a. A pair of side walls 26 are positioned in the Y direction by the retainer 20 .

After that, the lid sheet 18C is assembled. At this time, the central portion of the lid sheet 18C is pushed down to open the folded portion 42, and the neck 28a is fitted to the pair of neck fitting portions 30b. As a result, the lid sheet 18C is positioned in the X direction, and the retainer 20C is prevented from coming off in the Z direction. Also, the lock pieces 38Ca and 38Cb are locked in the lock holes 34Ca and 34Cb. Thereby, the retainer 20C is positioned in the X direction.

FIG. 10 is a perspective view of a wire armoring body 10D according to a fourth modification. As shown in FIG. 10, in the electric wire sheathing body 10D, the projections 28 provided on the edges 26a of the side walls 26, and the mutually engaging portions 40 consisting of the neck fitting portions 30b corresponding to the projections 28 and the elongated holes 36 are A plurality of them are provided at equal intervals along the X direction, and are arranged at positions shifted in the X direction on the side walls 26 on both sides. This makes the intensity uniform along the X direction.

In addition, the position of the portion corresponding to the mutual engagement portion 40 in the electric wire armors 10, 10A to 10D can be appropriately changed depending on the design conditions. may be arranged side by side in the Y direction. The number of interengaging portions 40 arranged at one end in the Y direction may be different from that arranged at the other end.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be freely modified without departing from the gist of the present invention.

Reference Signs List 10, 10A, 10B, 10C, 10D Outer body for electric wire 11 Wire harness with outer body 12 Wire harness 14 Storage sections 16, 16C Main sheets 18, 18A, 18B, 18C Lid sheets 20, 20C Retainer 22 Assembling mechanism section 24 Bottom wall 26 Side wall 26a Rim 28, 28C Projection 28a Neck 28b First head 28c, 28Cc Second head 30, 30A Hole 30a Projection insertion hole 30b Neck fitting portion 32 Locking piece 34a, 34b, 34Ca, 34Cb Locking hole junction)
36 Long holes 38a, 36b, 38Ca, 36Cb Lock piece (engaging portion)

Claims (10)

a main sheet having a bottom wall extending in a first direction and a pair of side walls extending from both ends of the bottom wall in a second direction;
a projection having a neck projecting in the second direction from edges of the pair of sidewalls and a first head projecting from the neck in one of the first directions;
a lid sheet and retainer disposed in superimposed relation to the edges of the pair of sidewalls;
with
The lid sheet is fitted to the neck from a third direction intersecting the first direction and the second direction to engage the neck, thereby positioning the lid sheet in the first direction. has a part
The retainers are respectively inserted from the second direction into the projections that are provided at positions corresponding to the neck fitting portions in the third direction and project from the edges of the pair of side walls. with respect to the neck fitting portion in the other of the first directions, and has an elongated hole for positioning the pair of side walls in the third direction. Outer body for electric wire. The retainer has an engaging portion that engages with an engaged portion provided on the lid sheet, and is positioned in the first direction by engaging the engaging portion with the engaged portion. The wire sheathing body according to claim 1, characterized by: 2. The electric wire outer covering according to claim 1, wherein the retainer and the lid sheet are joined together. 4. The lid sheet and the retainer according to any one of claims 1 to 3, wherein the lid sheet and the retainer are arranged without a gap between the edge of the side wall and the first head and are positioned in the second direction. 2. The outer covering for electric wire according to item 1. the projection includes a second head projecting from the neck in the other of the first directions;
5. The electric wire sheathing body according to claim 1, wherein the lid sheet is arranged without a gap between the edge of the side wall and the second head. A pair of projections, a pair of neck fitting portions, and a pair of elongated holes provided on the edges of the pair of side walls are arranged in parallel in the third direction. The outer covering for an electric wire according to any one of items 1 and 2. A plurality of the protrusions provided on the edge of the side wall and mutual engaging portions, each of which is composed of the neck fitting portion corresponding to the protrusion and the elongated hole, are provided along the first direction, and the side walls are arranged on both sides. 6. The electric wire sheathing body according to claim 1, wherein the outer covering body for electric wires is arranged at a position shifted in the first direction by . The electric wire according to any one of claims 1 to 7, wherein the cover sheet has a protrusion insertion hole through which the protrusion can be inserted and which communicates with the neck fitting portion in the third direction. exterior body. The electric wire sheathing body according to any one of claims 1 to 8, wherein the main sheet, the lid sheet and the retainer are thermoplastic resin foam sheets. Equipped with the wire exterior body according to any one of claims 1 to 9,
A wire harness with an exterior body, wherein the wire exterior body accommodates a wire harness in an accommodation portion surrounded by the main sheet and the lid sheet and is attached to the outer periphery of the wire harness.

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