Wire harness

Abstract

To maintain a bent shape of a bent part without increasing a load on the bent part.SOLUTION: A wire harness includes: a harness body 10 that has a bent part 15 elastically deformable and elastically bent, and a pair of low curvature parts 16 having a smaller curvature than the bent part 15; and a holding member 20 that maintains a bent state of the bent part 15 by abutting only the pair of low curvature portions 16 of the harness body 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a wire harness. [Background technology]

[0002] Patent Document 1 discloses a wire harness including a bundle of electric wires and a rib member attached longitudinally to the bundle of electric wires. The rib member has a bent portion, and by bundling the bundle of electric wires and the rib member with a bundling means, the bundle of electric wires can be routed along a predetermined bent path. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-022803 Summary of the Invention [Problem to be solved by the invention]

[0004] When a wire bundle is bent, the outer portion of the bend in the bent portion of the wire bundle is subjected to a tensile force. If the tightening force of the bundling means acts directly on the outer portion of the bend that is subjected to the tensile force, the load on the bent portion increases.

[0005] The wire harness of the present disclosure has been completed in light of the above circumstances, and has an object to maintain the bent shape of a bent portion without increasing the load on the bent portion. [Means for solving the problem]

[0006] The wire harness of the present disclosure includes: a harness main body that is elastically deformable and has a bent portion that is elastically bent, and a pair of low curvature portions that have a curvature smaller than that of the bent portion; The harness body further includes a holding member that holds the bent portion in a bent state by abutting only the pair of low curvature portions of the harness body. [Effects of the Invention]

[0007] According to the present disclosure, the bent shape of the bent portion can be maintained without increasing the load on the bent portion. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a wire harness according to a first embodiment. [Figure 2] FIG. 2 is a rear view showing the harness body in a cut state. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line AA, showing a state after the harness main body has been attached to the holding member and before the positioning member has been attached to the holding member. [Figure 6] FIG. 6 is a perspective view of the holding member. [Figure 7] FIG. 7 is a perspective view of the positioning member. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The wire harness of the present disclosure includes: (1) A harness main body is provided with an elastically deformable bent portion and a pair of low curvature portions having a curvature smaller than that of the bent portion, and a retaining member that maintains the bent state of the bent portion by abutting only the pair of low curvature portions of the harness main body. According to the present disclosure, the retaining member does not contact the bent portion, so that the load at the bent portion does not increase due to contact with the retaining member. Therefore, the bent shape of the bent portion can be maintained without increasing the load at the bent portion.

[0010] (2) The holding member is preferably made of a material harder than the outer periphery of the low curvature portion. With this configuration, the frictional resistance caused by elastic deformation of the outer periphery of the low curvature portion prevents misalignment between the low curvature portion and the holding member. Because the holding member is made of a material harder than the low curvature portion, it is relatively resistant to deformation. Therefore, the pair of low curvature portions can be reliably prevented from expanding and deforming.

[0011] (3) It is preferable that the retaining member has a ring shape that is continuous around the entire circumference, and the pair of low curvature portions are inserted into the retaining member. Because the retaining member has a ring shape that is continuous around the entire circumference, even if the pair of low curvature portions try to expand due to the elastic restoring force of the bent portion, the pair of low curvature portions can be prevented from expanding. This allows the bent portion to be maintained at the desired curvature.

[0012] (4) In (3), it is preferable to further include a positioning member disposed inside the holding member and sandwiching the low curvature portion between the holding member and the positioning member. With this configuration, it is possible to prevent the low curvature portion from being displaced relative to the holding member in the axial direction.

[0013] (5) In (4), it is preferable that the positioning member is attached to the holding member in a state where it is press-fitted between the pair of low curvature portions. With this configuration, the frictional resistance between the low curvature portions and the holding member and the frictional resistance between the low curvature portions and the positioning member can suppress misalignment of the low curvature portions with respect to the holding member.

[0014] (6) In (4) or (5), it is preferable that both the holding member and the positioning member are made of a material harder than the outer periphery of the low curvature portion. With this configuration, the low curvature portion can be securely sandwiched between the holding member and the positioning member, thereby preventing the low curvature portion from shifting.

[0015] (7) In (6), when the direction in which the low curvature portion is sandwiched between the holding member and the positioning member is defined as the width direction, it is preferable that the maximum dimension of the positioning member in the width direction is greater than the maximum dimension of the inner surface of the holding member in the width direction minus the sum of the maximum outer dimensions of the low curvature portion in the width direction. With this configuration, the low curvature portion is compressively deformed between the holding member and the positioning member, making it less likely to become misaligned.

[0016] (8) In (6) or (7), it is preferable that an interference mitigating portion made of a curved or tapered surface is formed on the outer peripheral surface of the positioning member at an edge portion that comes into sliding contact with the low curvature portion during the process of assembling the positioning member to the holding member. When the positioning member is attached to the holding member by being wedged between a pair of low curvature portions, the interference mitigating portion made of a curved or tapered surface comes into sliding contact with the low curvature portion. This prevents the low curvature portion from being damaged by the positioning member.

[0017] (9) In any of (4) to (8), the positioning member preferably has a through space extending in the same direction as the insertion direction of the low curvature portion of the holding member. This configuration allows for reduction in the weight of the positioning member and material costs.

[0018] (10) In (4) to (9), it is preferable that one of the holding member and the positioning member has an elastically displaceable elastic locking piece, and the other of the holding member and the positioning member has a locking hole to which the elastic locking piece is locked. The positioning member can be held in an assembled state relative to the holding member by the locking of the elastic locking piece with the locking hole.

[0019] (11) In (10), it is preferable that the positioning member has a through space penetrating in the same direction as the insertion direction of the low-curvature portion of the holding member, the elastic locking piece is formed on the positioning member, and the elastic locking piece elastically deforms so as to advance into the through space during the process of assembling the positioning member to the holding member. Since the through space functions as a deflection allowance space for the elastic locking piece, the shape of the positioning member can be simplified compared to when a deflection allowance space for the elastic locking piece is formed separately from the through space.

[0020] (12) In (11), it is preferable that the positioning member has a pair of thin-walled portions on which the elastic locking pieces are formed, and a pair of thick-walled portions that are thicker than the thin-walled portions and press against the pair of low-curvature portions to sandwich them between the thin-walled portions and the holding member. The elastic locking pieces formed on the thin-walled portions are easily elastically deformed, thereby reducing frictional resistance between the elastic locking pieces and the holding member during the process of assembling the positioning member to the holding member, and improving assembly workability. The thick-walled portions, which are thicker than the thin-walled portions, are less likely to elastically deform even when subjected to a reaction force from the low-curvature portions, so the low-curvature portions can be reliably positioned relative to the holding member.

[0021] (13) In (12), it is preferable that the retaining member has a locking wall portion in which the locking hole is formed, and the thickness of the locking wall portion is greater than the thickness of the thin-wall portion. Since the locking wall portion is relatively thick and the locking hole is deep, a large locking margin can be secured between the locking hole and the elastic locking piece in the thickness direction of the locking wall portion.

[0022] (14) In (10) to (13), it is preferable that a laminated wall portion is formed by overlapping the wall portion of the holding member and the wall portion of the positioning member in a direction intersecting the direction in which the low curvature portion is sandwiched, and that both the elastic locking piece and the locking hole are formed in the laminated wall portion. Since the laminated wall portion is formed by wall portions overlapping in a direction intersecting the direction in which the low curvature portion is sandwiched, it does not face the low curvature portion. Since the elastic locking piece and the locking hole are positioned so as not to face the low curvature portion, interference between the low curvature portion and the elastic locking piece can be prevented.

[0023] (15) In (14), it is preferable that the two laminated wall portions are provided at two locations spaced apart in a direction perpendicular to the arrangement direction of the pair of low curvature portions, and the elastic locking pieces and the locking holes are formed in the two laminated wall portions, respectively. With this configuration, the elastic locking pieces and the locking holes are locked to each other at two locations spaced apart, so that the positioning member can be securely held by the holding member.

[0024] (16) In (14) or (15), it is preferable that the retaining member has a pair of locking holes, and the pair of locking holes are arranged diagonally with respect to the insertion direction of the low curvature portion of the retaining member. With this configuration, a greater distance between the locking holes can be ensured within the limited space of the stacked wall portion, compared to when the pair of locking holes are arranged parallel to the insertion direction of the low curvature portion of the retaining member or when the pair of locking holes are arranged perpendicular to the insertion direction of the low curvature portion. As a result, when a rotational force about an imaginary axis parallel to the overlapping direction of the stacked wall portions acts on the wall portions of the retaining member constituting the stacked wall portion and the wall portions of the positioning member constituting the stacked wall portion, relative rotation between the wall portions of the retaining member and the wall portions of the positioning member can be suppressed.

[0025] (17) In any of (10) to (16), it is preferable that the elastic locking pieces include a long elastic locking piece and a short elastic locking piece, and the long elastic locking piece and the short elastic locking piece are arranged in parallel. According to this configuration, by arranging two elastic locking pieces of different lengths side by side, it is possible to reduce the assembly resistance when assembling the positioning member to the holding member and to prevent the positioning member from coming off.

[0026] [Details of the embodiments of the present disclosure] [Example 1] A wire harness according to a first embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. The present invention is not limited to these examples, but is defined by the claims, and includes all modifications within the meaning and scope equivalent to the claims. In this first embodiment, with regard to the front-to-rear direction, the positive direction of the X axis in FIGS. 1, 3 to 7 is defined as the front. With regard to the left-to-right direction, the positive direction of the Y axis in FIGS. 1 to 3, 5 to 7 is defined as the right. The left-to-right direction and the width direction are used synonymously. With regard to the up-down direction, the positive direction of the Z axis in FIGS. 1, 2, 4, 6, and 7 is defined as the up. The up-down direction and the height direction are used synonymously.

[0027] As shown in Fig. 1, the wire harness of the first embodiment is configured by assembling one harness main body 10, one holding member 20, and one positioning member 30. As shown in Fig. 2, the harness main body 10 is a member in which a plurality of parallel insulated electric wires 11 (two in the first embodiment) are surrounded by one oval outer casing 14. The insulated electric wire 11 is a cable with a circular cross section in which a core wire 12 is surrounded by an insulating coating 13. The outer casing 14 is configured by a sheath in which the two insulated electric wires 11 are embedded, a corrugated tube, a rubber tube, adhesive tape, a cylindrical protector, a braided wire, etc. The harness main body 10 is arranged with the two insulated electric wires 11 aligned vertically.

[0028] As shown in FIGS. 1, 3, and 5, in a plan view of the wire harness seen from above, the harness main body 10 is routed along a curved path that is folded back into a U-shape. The portion of the harness main body 10 that is bent back is defined as a bent portion 15. The portions of the harness main body 10 that extend from both axial ends of the bent portion 15 are defined as a pair of low curvature portions 16. The low curvature portions 16 are portions whose curvature is smaller than that of the bent portion 15. The low curvature portions 16 may extend in a straight line or may be slightly curved portions. The low curvature portions 16 in this embodiment 1 are linearly extending portions with a curvature of zero. The holding member 20 and the positioning member 30 contact only the pair of low curvature portions 16 to hold the harness main body 10 in a predetermined shape and keep the bent portion 15 curved at a predetermined curvature.

[0029] The retaining member 20 is a single component made of a synthetic resin material that is more rigid than the outer periphery of the harness main body 10. As shown in FIG. 2, in a front view of the retaining member 20, the retaining member 20 has a rectangular frame shape whose width is greater than its height. The internal space of the retaining member 20 is an accommodation space 21 that penetrates the retaining member 20 in the front-rear direction. As shown in FIG. 6, the retaining member 20 has a pair of left and right pressure-receiving wall portions 22 whose wall thickness direction is oriented in the left-right direction, and a pair of upper and lower locking wall portions 23 whose wall thickness direction is oriented in the up-down direction. The thickness of the pressure-receiving wall portions 22 and the thickness of the locking wall portions 23 are the same dimension.

[0030] A pair of locking holes 24 are formed in each of the pair of upper and lower locking walls 23. The locking holes 24 are shaped to penetrate the locking wall 23 in the up-down direction. The pair of locking holes 24 are arranged side by side at an angle spaced apart relative to both the front-rear and left-right directions in a plan view of the holding member 20 viewed from above. Tapered surfaces 25 are formed on the inner edges of the pressure-receiving walls 22 at the opening edges of the accommodation space 21 on both the front and rear surfaces of the holding member 20.

[0031] The positioning member 30 is a single part made of a synthetic resin material having higher rigidity than the outer periphery of the harness main body 10. When viewed from the front, the positioning member 30 has a rectangular shape with a width dimension greater than a height dimension. As shown in FIG. 7, Positioning member 30 The housing 20 includes a pair of left and right thick wall portions 31 whose wall thickness direction is oriented in the left-right direction, and a pair of upper and lower thin wall portions 32 whose wall thickness direction is oriented in the up-down direction. The thickness of the thick wall portions 31 is thicker than the thickness of the thin wall portions 32, and is thicker than the thicknesses of the pressure-receiving wall portion 22 and the locking wall portion 23. The thickness of the thin wall portions 32 is thinner than the thicknesses of the pressure-receiving wall portion 22 and the locking wall portion 23. Positioning member 30 The holding member 20 has a through space 33 surrounded by a pair of thick wall portions 31 and a pair of thin wall portions 32. The through space 33 is open on both the front and rear surfaces of the holding member 20.

[0032] A long elastic locking piece 34L and a short elastic locking piece 34S are formed on the pair of upper and lower thin wall portions 32, respectively. The long elastic locking piece 34L has a long arm portion 35L extending cantilevered in the front-to-rear direction and a long-side locking projection 36L protruding from the extending end of the long arm portion 35L toward the outer surface of the thin wall portion 32. The short elastic locking piece 34S has a short arm portion 35S extending cantilevered in the front-to-rear direction and a short-side locking projection 36S protruding from the extending end of the short arm portion 35S toward the outer surface of the thin wall portion 32. Each elastic locking piece 34L, 34S can elastically deform in a direction (up and down) advancing into the through-space 33, with the base end of each elastic locking piece 34L, 34S as a fulcrum.

[0033] In one thin wall portion 32, the long elastic locking piece 34L and the short elastic locking piece 34S are arranged side by side. The base end of the long arm portion 35L and the base end of the short arm portion 35S are arranged at the same position in the front-to-back direction. The long side locking protrusion 36L and the short side locking protrusion 36S are arranged side by side in a positional relationship in which they are diagonally spaced apart in both the front-to-back and left-to-right directions, similar to the locking holes 24.

[0034] 3 and 5, an interference mitigation portion 37 made of a curved surface is formed on the outer edge of the thick wall portion 31 of the outer peripheral edge portions on both the front and rear surfaces of the positioning member 30. In plan view, the radius of the interference mitigation portion 37 is set to be larger than the dimensions of the tapered surface 25 of the pressure-receiving wall portion 22 in the front-rear direction and the left-right direction.

[0035] The height dimension of the positioning member 30 is the same as or slightly smaller than the height dimension of the accommodating space 21. The width dimension of the positioning member 30 is smaller than the width dimension of the accommodating space 21. The difference between the width dimension of the accommodating space 21 and the width dimension of the positioning member 30 is set to be smaller than twice the width dimension of the harness main body 10.

[0036] Next, a procedure for assembling the wire harness of the first embodiment will be described. As shown in Fig. 5, the harness main body 10 is elastically deformed to form the bent portions 15, and the bent portions 15 are passed through the accommodating space 21 from the rear of the holding member 20, so that the pair of low curvature portions 16 are inserted into the accommodating space 21. The pair of low curvature portions 16 are elastically pressed against the inner surfaces of the pair of pressure-receiving wall portions 22 by the elastic restoring force of the bent portions 15. The pair of low curvature portions 16 are temporarily held in the inserted state in the accommodating space 21 by the frictional force between the pair of low curvature portions 16 and the inner surfaces of the pressure-receiving wall portions 22.

[0037] Thereafter, the positioning member 30 is assembled into the accommodation space 21 by wedging it between the pair of low curvature portions 16 from the rear of the holding member 20. During this process, the outer surfaces of the pair of thick wall portions 31 slide against the pair of low curvature portions 16, but because the interference mitigation portion 37 on the front side of the positioning member 30 slides against the low curvature portions 16 at an angle, the positioning member 30 does not get caught on the low curvature portions 16. When the front end of the positioning member 30 begins to enter the accommodation space 21, the pair of low curvature portions 16 elastically deform so as to be crushed in the left-right direction between the pressure-receiving wall portion 22 and the thick wall portion 31.

[0038] In the process of the positioning member 30 entering the accommodation space 21, first, the long elastic locking piece 34L is elastically deformed so as to advance into the through space 33 due to interference between the long side locking protrusion 36L and the locking wall portion 23. After the long elastic locking piece 34L starts to elastically deform, the short elastic locking piece 34S is elastically deformed so as to advance into the through space 33 due to interference between the short side locking protrusion 36S and the locking wall portion 23. When the positioning member 30 reaches a predetermined assembly position with respect to the holding member 20, the long side locking protrusion 36L is locked in the locking hole 24 due to the elastic return of the long elastic locking piece 34L, and at the same time, the short side locking protrusion 36S is locked in the locking hole 24 due to the elastic return of the short elastic locking piece 34S.

[0039] 2 and 3, when the positioning member 30 is assembled to the holding member 20, a pair of left and right harness insertion spaces 38 are defined, surrounded by the left and right ends of the upper and lower locking walls 23, the pressure-receiving wall 22, and the thick wall 31. Only the pair of low curvature portions 16 of the harness main body 10 are inserted into the pair of harness insertion spaces 38. The bent portion 15 is not present in the harness insertion space 38 and is not in contact with any of the pressure-receiving wall 22, the thick portion, or the locking wall 23.

[0040] 1, 2, and 4, when the positioning member 30 is assembled to the holding member 20, the locking wall portions 23 and the thin-wall portions 32 are overlapped in the vertical direction to form a two-ply laminated wall portion 39. The laminated wall portions 39 are formed on the upper surface portions of the holding member 20. The two laminated wall portions 39 are spaced apart in the vertical direction (a direction perpendicular to the direction in which the low curvature portion 16 is sandwiched between the pressure-receiving wall portion 22 and the thick portion). The locking wall portions 23 and the thin-wall portions 32 that form the laminated wall portion 39 are located in positions that do not face the harness insertion space 38. The locking holes 24, the long elastic locking pieces 34L, and the short elastic locking pieces 34S are also located in positions that do not face the harness insertion space 38.

[0041] The wire harness of the first embodiment includes one harness main body 10, one retaining member 20, and one positioning member 30. The harness main body 10 is elastically deformable and has a bent portion 15 that is elastically bent, and a pair of low curvature portions 16 that have a curvature smaller than that of the bent portion 15. The retaining member 20 maintains the bent state of the bent portion 15 by abutting only the pair of low curvature portions 16 of the harness main body 10. The positioning member 30 is disposed inside the retaining member 20 in a state where it is press-fitted between the pair of low curvature portions 16. The positioning member 30 attached to the retaining member 20 sandwiches the low curvature portion 16 between itself and the retaining member 20. Frictional resistance between the low curvature portion 16 and the retaining member 20 and frictional resistance between the low curvature portion 16 and the positioning member 30 can suppress misalignment of the low curvature portion 16 with respect to the retaining member 20.

[0042] Since the retaining member 20 does not contact the bent portion 15, the load at the bent portion 15 does not increase due to contact with the retaining member 20. Since the positioning member 30 does not contact the bent portion 15, the load at the bent portion 15 does not increase due to contact with the positioning member 30. Therefore, the bent shape of the bent portion 15 can be maintained without increasing the load at the bent portion 15. Since the low curvature portion 16 is sandwiched between the retaining member 20 and the positioning member 30, the bent portion 15 (harness main body 10) can be prevented from being displaced relative to the retaining member 20 in the axial direction.

[0043] The retaining member 20 is made of a material that is harder than the outer periphery of the low curvature portion 16. Frictional resistance caused by elastic deformation of the outer periphery of the low curvature portion 16 prevents misalignment between the low curvature portion 16 and the retaining member 20. The retaining member 20, which is harder than the low curvature portion 16, is relatively resistant to deformation, so that the pair of low curvature portions 16 can be reliably prevented from expanding and deforming. The positioning member 30 is also made of a material that is harder than the outer periphery of the low curvature portion 16, so that the low curvature portion 16 can be reliably sandwiched between the retaining member 20 and the positioning member 30. This prevents the low curvature portion 16 from being misaligned with respect to the retaining member 20 and the positioning member 30.

[0044] The retaining member 20 has a ring shape that is continuous around the entire circumference. The pair of low curvature portions 16 are inserted into the accommodation space 21 of the retaining member 20. Because the retaining member 20 has a ring shape that is continuous around the entire circumference, even if the pair of low curvature portions 16 try to expand due to the elastic restoring force of the bent portions 15, the pair of low curvature portions 16 can be prevented from expanding. This allows the bent portions 15 to be maintained at the desired curvature.

[0045] The low curvature portion 16 is sandwiched in the width direction between the pressure-receiving wall portion 22 of the holding member 20 and the thick portion of the positioning member 30. The maximum width dimension of the positioning member 30 is greater than the maximum width dimension of the inner surface (accommodation space 21) of the holding member 20 minus the sum of the maximum outer dimensions in the width direction of the low curvature portion 16. Because the low curvature portion 16 is compressively deformed between the holding member 20 and the positioning member 30, displacement of the low curvature portion 16 is unlikely to occur.

[0046] An interference mitigation portion 37 made of a curved surface is formed on the edge of the outer circumferential surface of positioning member 30 that comes into sliding contact with low curvature portions 16 during the process of assembling positioning member 30 to holding member 20. When positioning member 30 is attached to holding member 20 by wedging it between a pair of low curvature portions 16, interference mitigation portion 37 comes into sliding contact with low curvature portions 16, thereby preventing low curvature portions 16 from being damaged by the edge of positioning member 30.

[0047] The positioning member 30 has a through space 33 that penetrates in the same direction (front-to-back direction) as the insertion direction of the low curvature portion 16 of the holding member 20. By forming the through space 33, it is possible to reduce the weight and material costs of the positioning member 30. Because a finger can be inserted into the through space 33, it is easy for an operator to grasp the positioning member 30 with his or her hand.

[0048] The positioning member 30 has elastically deformable long elastic locking pieces 34L and short elastic locking pieces 34S. The holding member 20 has locking holes 24 into which the long elastic locking pieces 34L or short elastic locking pieces 34S are locked. The engagement between the long elastic locking pieces 34L and the locking holes 24, and the engagement between the short elastic locking pieces 34S and the locking holes 24, allows the positioning member 30 to be held in an assembled state relative to the holding member 20.

[0049] In the process of assembling the positioning member 30 to the holding member 20, the long elastic locking pieces 34L and the short elastic locking pieces 34S are elastically deformed so as to advance into the through-space 33. The through-space 33 functions as a deflection allowance space for elastically deforming the elastic locking pieces 34L, 34S. Compared to when a deflection allowance space for the elastic locking pieces 34L, 34S is formed separately from the through-space 33 in the positioning member 30, the shape of the positioning member 30 can be simplified.

[0050] The positioning member 30 has a pair of thin wall portions 32 on which the long elastic locking pieces 34L and the short elastic locking pieces 34S are formed, and a pair of thick wall portions 31 that are thicker than the thin wall portions 32. The pair of low curvature portions 16 are individually pressed and sandwiched between the pair of thick wall portions 31 and a pair of pressure-receiving walls 22 of the holding member 20. Because the long elastic locking pieces 34L and the short elastic locking pieces 34S are formed on the thin wall portions 32, they are relatively easily elastically deformed. In the process of assembling the positioning member 30 to the holding member 20, frictional resistance between the long elastic locking pieces 34L and the short elastic locking pieces 34S and the holding member 20 is reduced, improving the ease of assembly. The thick wall portion 31, which is thicker than the thin wall portion 32, is less likely to be elastically deformed even when subjected to a reaction force from the low curvature portion 16, so that the low curvature portion 16 can be reliably positioned between the holding member 20 and the thick wall portion 31.

[0051] The holding member 20 has a locking wall portion 23 in which a locking hole 24 is formed. The thickness dimension of the locking wall portion 23 is greater than the thickness dimension of the thin-wall portion 32. Since the locking wall portion 23 is a thick wall portion compared to the thin-wall portion, the depth dimension of the locking hole 24 (the thickness dimension of the locking wall portion 23) is also relatively large. This ensures a large locking margin between the locking hole 24 and the elastic locking pieces 34L, 34S (locking protrusions 36L, 36S) in the thickness direction of the locking wall portion 23.

[0052] The wall portion (locking wall portion 23) of the holding member 20 and the wall portion (thin wall portion 32) of the positioning member 30 overlap in a direction (vertical direction) intersecting the direction in which the low curvature portion 16 is sandwiched between them, thereby forming a laminated wall portion 39. The long elastic locking pieces 34L, the short elastic locking pieces 34S, and the locking holes 24 are formed in the laminated wall portion 39. The laminated wall portion 39 is formed by wall portions (locking wall portion 23 and thin wall portion 32) that overlap in a direction intersecting the direction in which the low curvature portion 16 is sandwiched between them, and therefore does not face the low curvature portion 16. The long elastic locking pieces 34L, the short elastic locking pieces 34S, and the locking holes 24 are positioned so as not to face the low curvature portion 16, thereby preventing the long elastic locking pieces 34L and the short elastic locking pieces 34S from interfering with the low curvature portion 16.

[0053] Two laminated wall portions 39 are arranged at two locations spaced apart in a direction (vertical direction) perpendicular to the arrangement direction of the pair of low curvature portions 16. Each of the two laminated wall portions 39 is formed with a long elastic locking piece 34L, a short elastic locking piece 34S, and a locking hole 24. The locking between the long elastic locking piece 34L and the locking hole 24 and the locking between the short elastic locking piece 34S and the locking hole 24 are performed at two locations spaced apart from each other, so the positioning member 30 can be securely held relative to the holding member 20.

[0054] In one locking wall 23, a pair of locking holes 24 are arranged diagonally with respect to the insertion direction (front-rear direction) of the low curvature portion 16 of the holding member 20. Compared to when the pair of locking holes 24 are arranged parallel to the insertion direction of the low curvature portion 16 of the holding member 20 or when the pair of locking holes 24 are arranged in a direction perpendicular to the insertion direction of the low curvature portion 16, a greater separation distance between the pair of locking holes 24 can be ensured within the limited space of the stacked wall 39. This makes it possible to suppress relative rotation between the locking wall 23 and the thin wall 32 when a rotational force acts on the locking wall 23 of the holding member 20 constituting the stacked wall 39 and the thin wall 32 of the positioning member 30 constituting the stacked wall 39, about a virtual axis (see FIGS. 2 to 4 ) in the up-down direction parallel to the overlapping direction of the stacked wall 39.

[0055] The long elastic locking piece 34L and the short elastic locking piece 34S are arranged in parallel. By arranging the two elastic locking pieces 34L, 34S of different lengths side by side, it is possible to reduce the assembly resistance when assembling the positioning member 30 to the holding member 20 and also to prevent the positioning member 30 from coming off.

[0056] [Other Examples] The present invention is not limited to the examples described above and illustrated in the drawings, but is defined by the claims. The present invention includes the meaning equivalent to the claims and all modifications within the scope of the claims, including the following embodiments. The low curvature portion sandwiched between the holding member and the positioning member is not limited to a portion whose axis extends in a straight line, but may be a portion whose axis is slightly curved. The shape of the holding member is not limited to a rectangle, but may be a square, trapezoid, circle, ellipse, oval, or the like. The holding member is not limited to a ring shape that is continuous around the entire circumference, but may be "S-shaped" or "C-shaped." The holding member is not limited to a single component, but may be an assembly of multiple components. The holding member may be an integrated member in which a metal ring is embedded inside a ring-shaped member made of hard rubber. The holding member may be made of only hard rubber. The positioning member may be made of hard rubber. Instead of providing a positioning member separate from the holding member, a positioning function part consisting of a groove into which the low curvature portion fits or an elastic piece that elastically clamps the low curvature portion may be integrally formed on the holding member, and this positioning function part may be used to prevent the low curvature portion from shifting out of position relative to the holding member. The elastic locking pieces may be formed only on the holding member and the locking holes may be formed only on the positioning member, or the elastic locking pieces and the locking holes may be formed on both the holding member and the positioning member. The pair of locking holes may be arranged so as to be aligned parallel to the insertion direction of the low curvature portion of the holding member, or may be arranged so as to be aligned in a direction perpendicular to the insertion direction of the low curvature portion. The pair of parallel elastic locking pieces may have the same length. The elastic locking pieces and the locking holes may be formed in only one of the two upper and lower laminated wall portions. The positioning member may be a solid part with no through space. The thickness of the four walls constituting the positioning member may all be the same. The thickness of the locking wall portion of the holding member may be the same as or thinner than the thickness of the thin wall portion of the positioning member. The thickness of the pressure-receiving wall portion of the holding member may be the same as or thicker than the thick wall portion of the positioning member. The thickness of the pressure-receiving wall portion and the thickness of the locking wall portion of the holding member may be different. [Explanation of symbols]

[0057] 10...Harness body 11...Insulated wire 12...Core wire 13...Insulating coating 14...Exterior body 15...Bend 16...Low curvature part 20...Holding member 21...Containment space 22...Pressure-receiving wall 23... Locking wall portion (wall portion of holding member) 24...Latching hole 25...Tapered surface 30... Positioning member 31...Thick wall part 32...Thin wall portion (wall portion of positioning member) 33...Through space 34L: Long elastic locking piece (elastic locking piece) 34S: Short elastic locking piece (elastic locking piece) 35L: Long arm section 35S: Short arm section 36L: Long side locking protrusion 36S: Short side locking protrusion 37...Interference mitigation section 38...Harness insertion space 39...Laminated wall section

Claims

1. a harness main body that is elastically deformable and has a bent portion that is elastically bent, and a pair of low curvature portions that have a curvature smaller than that of the bent portion; a retaining member that holds the bent portion in a bent state by abutting only the pair of low curvature portions of the harness main body.

2. The wire harness according to claim 1 , wherein the holding member is made of a material having a higher hardness than the outer periphery of the low curvature portion.

3. The holding member has a ring shape that is continuous around the entire circumference, The wire harness according to claim 1 or 2, wherein the pair of low curvature portions are inserted into the holding member.

4. The wire harness according to claim 3 , further comprising a positioning member disposed inside the holding member and sandwiching the low curvature portion between the holding member and the positioning member.

5. The wire harness according to claim 4 , wherein the positioning member is attached to the holding member in a state where the positioning member is press-fitted between the pair of low curvature portions.

6. The wire harness according to claim 4 , wherein both the holding member and the positioning member are made of a material having a higher hardness than the outer periphery of the low curvature portion.

7. When the direction in which the low curvature portion is sandwiched between the holding member and the positioning member is defined as the width direction, The wire harness according to claim 6, wherein the maximum width dimension of the positioning member is greater than the maximum width dimension of the inner surface of the holding member minus the sum of the maximum outer dimensions of the low curvature portions in the width direction.

8. The wire harness according to claim 6, wherein an interference mitigation portion consisting of a curved surface or a tapered surface is formed on an edge portion of an outer peripheral surface of the positioning member that comes into sliding contact with the low curvature portion during the assembly process to the holding member.

9. The wire harness according to claim 4 , wherein the positioning member has a through space that penetrates in the same direction as an insertion direction of the low curvature portion of the holding member.

10. one of the holding member and the positioning member has an elastic locking piece that is elastically displaceable, 5. The wire harness according to claim 4, wherein the other of the holding member and the positioning member has a locking hole in which the elastic locking piece is locked.

11. the positioning member has a through space that penetrates in the same direction as the insertion direction of the low curvature portion of the holding member, The elastic locking piece is formed on the positioning member, The wire harness according to claim 10, wherein the elastic locking piece is elastically deformed so as to advance into the through-space during a process of assembling the positioning member to the holding member.

12. 12. The wire harness according to claim 11, wherein the positioning member has a pair of thin wall portions on which the elastic locking pieces are formed, and a pair of thick wall portions that are thicker than the thin wall portions and press against the pair of low curvature portions to sandwich them between the thin wall portions and the holding member.

13. the holding member has a locking wall portion in which the locking hole is formed, The wire harness according to claim 12, wherein a thickness of the locking wall portion is greater than a thickness of the thin wall portion.

14. a wall portion of the holding member and a wall portion of the positioning member overlap each other in a direction intersecting a direction in which the low curvature portion is sandwiched between the wall portions, thereby forming a laminated wall portion; The wire harness according to claim 10 , wherein both the elastic locking pieces and the locking holes are formed in the laminated wall portion.

15. The laminated wall portion has two laminated walls, the two stacked wall portions are arranged at two locations spaced apart in a direction perpendicular to the arrangement direction of the pair of low curvature portions, The wire harness according to claim 14, wherein the elastic locking pieces and the locking holes are formed in the two laminated wall portions, respectively.

16. The locking hole has a pair, The wire harness according to claim 14, wherein the pair of locking holes are arranged so as to be aligned obliquely with respect to an insertion direction of the low curvature portion of the holding member.

17. The elastic locking pieces include long elastic locking pieces and short elastic locking pieces, The wire harness according to claim 10, wherein the long elastic locking piece and the short elastic locking piece are arranged in parallel.

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