Wire harness

Abstract

The purpose of the present invention is to make it possible to firmly hold a small-diameter corrugated pipe to a protector for a large-diameter corrugated pipe. The wire harness includes an electric wire, a bellows, a protector provided with a large-diameter holding portion, and a holder including a small-diameter holding portion holding the bellows and a holding target portion held by the large-diameter holding portion. The small-diameter holding portion has a first support portion, a second support portion, and a third support portion that support portions of the bellows that are different from each other in the circumferential direction. An insertion opening for inserting and pulling out the corrugated pipe is formed between the first support portion and the second support portion. The third support portion supports the bellows from a side opposite to the insertion port.

Description

Technical Field

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

[0002] Patent Document 1 discloses a technique for connecting a small-diameter corrugated tube to a protective member to which a large-diameter corrugated tube can be connected via a joint. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2011-244650 Summary of the invention Problems to be solved by the invention

[0004] It is desirable to be able to securely hold a small-diameter corrugated tube to a protector for a large-diameter corrugated tube.

[0005] In view of this, an object of the present disclosure is to enable a small-diameter corrugated tube to be firmly held by a protector for a large-diameter corrugated tube. Solutions for solving problems

[0006] The wiring harness disclosed in the present invention comprises: an electric wire; a corrugated tube covering the electric wire; a protective member provided with a large-diameter retaining portion capable of retaining a large-diameter corrugated tube having a size larger than that of the corrugated tube; and a retaining member including a small-diameter retaining portion retaining the corrugated tube and a retaining object portion retained by the large-diameter retaining portion, the small-diameter retaining portion having a first supporting portion, a second supporting portion and a third supporting portion supporting circumferentially different portions of the corrugated tube, an insertion port for plugging and unplugging the corrugated tube being formed between the first supporting portion and the second supporting portion in the small-diameter retaining portion, the third supporting portion supporting the corrugated tube from a side opposite to the insertion port at the same position in the axial direction of the corrugated tube as the first supporting portion and the second supporting portion. Effects of the Invention

[0007] According to the present disclosure, a small-diameter corrugated tube can be firmly held by a protector for a large-diameter corrugated tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a plan view showing the wire harness according to the first embodiment. Figure 2 It is a perspective view showing a protection member and a retaining member. Figure 3 It is an exploded perspective view showing a protection member and a retaining member. Figure 4 yes Figure 1 Sectional view along line IV-IV. Figure 5 yes Figure 1 VV line cross-sectional view. Figure 6 yes Figure 1 VI-VI line cross-sectional view. Figure 7 yes Figure 1 Cross-sectional view along line VI I-VI I. Figure 8 It is a cross-sectional view showing a state where a protective member holds a large-diameter corrugated tube. Fig. 9 It is a cross-sectional view showing a state where a protective member holds a large-diameter corrugated tube. Fig.10 It is a cross-sectional view showing a wire harness according to a modified example. Fig.11 It is an exploded perspective view showing a protector and a holder of a wire harness according to a modified example. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described below.

[0010] The wiring harness of the present disclosure is as follows.

[0011] (1) A wiring harness comprising: an electric wire; a corrugated tube covering the electric wire; a protective member provided with a large-diameter retaining portion capable of retaining a large-diameter corrugated tube having a size larger than that of the corrugated tube; and a retaining member including a small-diameter retaining portion retaining the corrugated tube and a retaining object portion retained by the large-diameter retaining portion, the small-diameter retaining portion having a first supporting portion, a second supporting portion, and a third supporting portion supporting portions of the corrugated tube that are different from each other in a circumferential direction, an insertion port for inserting and removing the corrugated tube being formed between the first supporting portion and the second supporting portion in the small-diameter retaining portion, the third supporting portion supporting the corrugated tube from a side opposite to the insertion port at the same position as the first supporting portion and the second supporting portion in the axial direction of the corrugated tube.

[0012] According to the wire harness of (1), since the corrugated tube is supported by the first supporting portion, the second supporting portion and the third supporting portion, the corrugated tube can be firmly held on the retainer. Thus, the small-diameter corrugated tube can be firmly held on the protective member for the large-diameter corrugated tube.

[0013] (2) In the wiring harness of (1), the small-diameter holding portion may include a first base plate portion and a second base plate portion, each extending in a direction intersecting the axial direction and having a top end as a free end, the first support portion is provided at the free end of the first base plate portion, and the second support portion is provided at the free end of the second base plate portion. Thus, the first support portion and the second support portion are easily elastically deformed to expand the width of the insertion port when the corrugated tube is inserted or removed.

[0014] (3) In the wiring harness of (1) or (2), the protective member may include: a main body having a bottom and a side wall and opening on a side opposite to the bottom; and a cover portion closing the opening of the main body, the large diameter holding portion having a main body side large diameter holding portion formed on the main body and a cover side large diameter holding portion formed on the cover, and the holding object portion is held by both the main body side large diameter holding portion and the cover side large diameter holding portion. Thus, the holding member can be further firmly held on the protective member.

[0015] (4) In any one of the wiring harnesses of (1) to (3), the center of the corrugated tube may coincide with the center of the large diameter corrugated tube when the large diameter corrugated tube is not held by the holding member in the large diameter holding portion. Thus, even when the corrugated tube is used, it is easy to set the path length as when the large diameter corrugated tube is used.

[0016] (5) In any one of the wiring harnesses of (1) to (4), the holding object portion may include: a first holding object portion provided on the outer surface of the small-diameter holding portion; and a second holding object portion provided beside the small-diameter holding portion along the axial direction, and the large-diameter holding portion holds at least one of the first holding object portion and the second holding object portion. Thus, the holding member can be installed in any direction along the axial direction.

[0017] [Details of the embodiments of the present disclosure] Specific examples of the wire harness of the present disclosure are described below with reference to the drawings. The present disclosure is not limited to these examples, but is shown by the claims, and is intended to include all modifications within the equivalent meaning and scope of the claims.

[0018] [Implementation Method 1] The wire harness according to the first embodiment will be described below. Figure 1 It is a plan view showing the wire harness 10 according to the first embodiment. Figure 2 It is a perspective view showing the protector 40 and the holder 60 . Figure 3 It is an exploded perspective view showing the protector 40 and the holder 60 . Figure 4 yes Figure 1 Sectional view along line IV-IV. Figure 5 yes Figure 1VV line cross-sectional view. Figure 6 yes Figure 1 VI-VI line cross-sectional view. Figure 7 yes Figure 1 VI I-VI I line cross-sectional view. Also, in Figure 1 In the figures, the cover portion 47 of the protection member 40 is omitted. In the protection member 40 of each figure, the end portion is indicated by a solid line, and the middle portion other than the end portion is indicated by a two-dot chain line.

[0019] The wire harness 10 is mounted on a vehicle or the like. The wire harness 10 connects a plurality of electrical devices to each other. The wire harness 10 includes electric wires 20 , a corrugated tube 30 , a protector 40 , and a holder 60 .

[0020] The electric wire 20 sends a signal or supplies power to an electrical device. The electric wire 20 is, for example, a covered electric wire including a core wire made of metal and a covering part made of resin. The corrugated tube 30 and the protective member 40 are both components that cover and protect the electric wire 20. The corrugated tube 30 is formed to be easy to bend, whereas the protective member 40 is generally formed to be difficult to bend. For example, when assembling the wiring harness 10, the corrugated tube 30 can be bent together with the electric wire 20. The protective member 40 limits the path of the electric wire 20 so that the electric wire 20 can be maintained in a state of extending along a predetermined path.

[0021] The electric wire 20 has a section covered by the corrugated tube 30 and a section covered by the protective member 40. The section covered by the corrugated tube 30 overlaps with the section covered by the protective member 40 in a part of the overlapping section and does not overlap in another part of the non-overlapping section. In the overlapping section, the electric wire 20 and the corrugated tube 30 are covered by the protective member 40. In the overlapping section, the corrugated tube 30 is held by the protective member 40 via the retainer 60. The retainer 60 is arranged between the corrugated tube 30 and the protective member 40. The corrugated tube 30, the protective member 40 and the retainer 60 are all resin molded products.

[0022] The bellows 30 includes a large diameter cylinder 31 and a small diameter cylinder 32. The outer diameter of the large diameter cylinder 31 is larger than the outer diameter of the small diameter cylinder 32. The large diameter cylinder 31 and the small diameter cylinder 32 are alternately continuous along the axial direction of the bellows 30. On the outer surface and inner surface of the bellows 30, the concave and convex shapes corresponding to the large diameter cylinder 31 and the small diameter cylinder 32 are continuous in the axial direction. On the outer surface of the bellows 30, part of the large diameter cylinder 31 is an annular convex portion, and part of the small diameter cylinder 32 is an annular concave portion. On the inner surface of the bellows 30, part of the large diameter cylinder 31 is an annular concave portion, and part of the small diameter cylinder 32 is an annular convex portion.

[0023] Here, the protective member 40 includes a main body 41 and a cover 47. The main body 41 extends in a groove shape with an upper opening. The main body 41 has a bottom 42 and a plurality of side walls 43. The side walls 43 protrude from both sides in the width direction of the bottom 42. In the main body 41, the space between the top ends of the plurality of side walls 43 is used as an upper opening 44. Through the upper opening 44, the electric wire 20, the corrugated tube 30 and the retainer 60 are accommodated inside the main body 41. The cover 47 closes the upper opening 44 of the main body 41. Here, the main body 41 and the cover 47 are assembled after being molded using different molds. The main body 41 and the cover 47 may also be integrally molded in such a manner that one of the pair of side walls 43 is connected to the cover 47 via a hinge or the like. However, in the protective member 40, the cover 47 may also be omitted.

[0024] The protective member 40 is provided with a large diameter holding portion 48. The large diameter holding portion 48 is formed to be able to hold the large diameter corrugated tube. The large diameter holding portion 48 is provided at the end of the protective member 40. Figure 8 and Fig. 9 The large-diameter bellows and the large-diameter holding portion 48 will be described. Figure 8 and Fig. 9 It is a cross-sectional view showing a state where the protector 40 holds the large-diameter bellows 90 . Figure 8 is with Figure 4 Cross-sectional view at the same position, Fig. 9 is with Figure 5 Section view at the same location.

[0025] The size of the large diameter bellows 90 is larger than that of the bellows 30. Specifically, the large diameter bellows 90 has a shape in which a large diameter cylinder 91 and a small diameter cylinder 92 are alternately continuous in the axial direction, like the bellows 30. The outer diameter of the large diameter cylinder 91 is larger than the outer diameter of the large diameter cylinder 31, and the outer diameter of the small diameter cylinder 92 is larger than the outer diameter of the small diameter cylinder 32.

[0026] The large diameter holding portion 48 is formed to have a size corresponding to the size of the large diameter corrugated tube 90. The large diameter holding portion 48 has a concavoconvex inner surface that fits with the concavoconvex outer surface of the large diameter corrugated tube 90.

[0027] The large diameter retaining portion 48 has a fitting rib 49. The fitting rib 49 is embedded in the annular recess on the outside of the small diameter cylinder 92. The top end surface of the fitting rib 49 is a concave surface corresponding to the outer surface of the small diameter cylinder 92. Here, a plurality of fitting ribs 49 are provided in the axial direction. The pitch of the plurality of fitting ribs 49 is the same as the pitch of the small diameter cylinder 92. The fitting recess 50 is formed between adjacent fitting ribs 49. The large diameter cylinder 91 is embedded in the fitting recess 50. Here, the inner surface of the fitting recess 50 is not a concave surface corresponding to the outer surface of the large diameter cylinder 91.

[0028] Here, a main body side large diameter holding portion 48A and a cover side large diameter holding portion 48B are provided as the large diameter holding portion 48. The main body side large diameter holding portion 48A is formed on the main body portion 41, and the cover side large diameter holding portion 48B is formed on the cover portion 47. The main body side large diameter holding portion 48A has four fitting ribs 49A, and the cover side large diameter holding portion 48B has four fitting ribs 49B. The four fitting ribs 49A and the four fitting ribs 49B are provided at the same position in the axial direction.

[0029] Two of the four interlocking ribs 49A1 have a length from one of the pair of side walls 43 to the other side wall 43 via the bottom 42. The top end of the interlocking rib 49A1 protruding from the inner side of the main body 41 has a first portion extending in a semicircular arc shape and a second portion extending linearly from the end of the first portion along the side wall 43. The second portion of the interlocking rib 49A1 extends to the upper opening 44 of the main body 41. Two of the four interlocking ribs 49A2 are formed at the bottom 42 and do not reach the pair of side walls 43. In the axial direction, the two interlocking ribs 49A2 are located between the two interlocking ribs 49A1. The four interlocking ribs 49B are formed in the same shape as the interlocking rib 49A2.

[0030] The interlocking rib 49A and the interlocking rib 49B are connected by connecting ribs 51. The connecting rib 51 of the main body 41 connects the four interlocking ribs 49A in the axial direction. The connecting ribs 51 of the main body 41 are respectively provided at the positions of both ends of the interlocking rib 49A2 in the circumferential direction. The connecting rib 51 of the cover 47 connects the four interlocking ribs 49B in the axial direction. The connecting rib 51 of the cover 47 is respectively provided at the positions of both ends of the interlocking rib 49B in the circumferential direction. The height dimension of the connecting rib 51 is smaller than the height dimension of the interlocking rib 49 connected to the connecting rib 51.

[0031] The main body 41 is provided with a protrusion 45. The protrusion 45 prevents the large diameter bellows 90 from coming out of the upper opening 44 of the main body 41. The protrusions 45 protrude inward from the pair of side walls 43, respectively. The interval between the pair of side walls 43 is the same as or slightly larger than the diameter of the large diameter cylinder 91. The pair of protrusions 45 are located on the upper opening 44 side of the center of the large diameter bellows 90. The interval between the pair of protrusions 45 is smaller than the diameter of the large diameter cylinder 91. The interval between the pair of protrusions 45 is substantially the same as the diameter of the small diameter cylinder 92. When the large diameter bellows 90 is received in the main body 41 from the upper opening 44, the large diameter bellows 90 contacts the pair of protrusions 45. In this state, by pushing the large diameter bellows 90 into the main body 41, at least one of the large diameter bellows 90 and the protective member 40 is elastically deformed, and the large diameter bellows 90 passes between the pair of protrusions 45. After the large diameter bellows 90 passes between the pair of protrusions 45 , the elastically deformed portions of the large diameter bellows 90 and the protector 40 elastically recover, and the pair of protrusions 45 press the large diameter bellows 90 from the upper opening 44 side.

[0032] The pair of protrusions 45 are provided between the two fitting ribs 49A1 in the axial direction. The pair of protrusions 45 are provided at the same position as the two fitting ribs 49A2 in the axial direction. The length of the protrusions 45 in the axial direction is substantially equivalent to the interval between the outer surfaces of the two fitting ribs 49A2.

[0033] In the main body 41, through holes 46 are formed below the pair of protrusions 45. The through holes 46 are the same size as or larger than the protrusions 45 in a plan view. The through holes 46 are holes for extracting the mold portion that forms the protrusions 45 when the main body 41 is molded. The fitting rib 49A2 extends from one of the pair of through holes 46 to the other in a plan view.

[0034] For example, in the case where the bundle of wires 20 is thinner due to the small number of wires 20, the corrugated tube 30 can be used to replace the large-diameter corrugated tube 90. Here, since the corrugated tube 30 and the large-diameter corrugated tube 90 are generally common parts, it is unlikely that the cost will increase when the large-diameter corrugated tube 90 is changed to the corrugated tube 30. In contrast, since the protective member 40 is generally a special product corresponding to the path of the wire 20, etc., it is easy to cause a significant increase in cost when the protective member 40 used for the large-diameter corrugated tube 90 is changed to the protective member used for the corrugated tube 30. Therefore, in the wire harness 10 of the present disclosure, it is assumed that the protective member 40 used for the large-diameter corrugated tube 90 is also commonly used for the corrugated tube 30. However, since the large-diameter retaining portion 48 of the protective member 40 is formed to correspond to the size of the large-diameter corrugated tube 90, it is difficult for the large-diameter retaining portion 48 to directly retain the corrugated tube 30.

[0035] For example, here, the size difference between the bellows 30 and the large diameter bellows 90 is large. Specifically, the outer diameter of the small diameter cylinder 92 is larger than the outer diameter of the large diameter cylinder 31. Therefore, in a state where the center of the large diameter holding portion 48 coincides with the center of the bellows 30, a gap is generated between the large diameter holding portion 48 and the bellows 30 in the radial direction. Therefore, it is difficult for the large diameter holding portion 48 to directly hold the bellows 30.

[0036] Further, the axial pitch of the large diameter bellows 90 is different from the axial pitch of the bellows 30, and one is not an integer multiple of the other. Therefore, when the large diameter holding portion 48 is used to directly hold the bellows 30, when one of the multiple interlocking ribs 49 of the large diameter holding portion 48 is located outside the small diameter cylinder 32, another of the multiple interlocking ribs 49 is located outside the large diameter cylinder 31.

[0037] As described above, the concavoconvex inner surface of the large diameter holding portion 48 having a size corresponding to the large diameter corrugated tube 90 is difficult to fit with the concavoconvex outer surface of the corrugated tube 30. Therefore, the corrugated tube 30 is not directly held by the large diameter holding portion 48, but is indirectly held by the large diameter holding portion 48 via the retainer 60.

[0038] The holder 60 includes a small-diameter holding portion 61 and a holding target portion 80. The small-diameter holding portion 61 holds the corrugated tube 30. The holding target portion 80 is held by the large-diameter holding portion 48.

[0039] The small-diameter holding portion 61 includes a first small-diameter holding portion 62 and a second small-diameter holding portion 79. The first small-diameter holding portion 62 supports the corrugated tube 30 at three points separated in the circumferential direction. The second small-diameter holding portion 79 supports the lower half of the circumference of the corrugated tube 30. The second small-diameter holding portion 79 is axially arranged beside the first small-diameter holding portion 62. Here, the second small-diameter holding portion 79 is axially arranged on both sides of the first small-diameter holding portion 62.

[0040] The first small-diameter holding portion 62 includes a first supporting portion 63, a second supporting portion 64, and a third supporting portion 65. The first supporting portion 63, the second supporting portion 64, and the third supporting portion 65 support different portions of the corrugated tube 30 in the circumferential direction, respectively. For example, when a circumference is divided into three equal regions, the first supporting portion 63, the second supporting portion 64, and the third supporting portion 65 may be present in different regions. An insertion port 66 is formed between the first supporting portion 63 and the second supporting portion 64. The insertion port 66 is an opening for inserting and removing the corrugated tube 30 from the small-diameter holding portion 61. The third supporting portion 65 supports the corrugated tube 30 from the opposite side of the insertion port 66 at the same position as the first supporting portion 63 and the second supporting portion 64 in the axial direction of the corrugated tube 30. The first supporting portion 63, the second supporting portion 64, and the third supporting portion 65 are provided with a fitting rib 67, respectively.

[0041] The interlocking ribs 67 are provided in a plurality in the axial direction. Here, three interlocking ribs 67 are provided in the axial direction. The interlocking recesses 68 are formed between adjacent interlocking ribs 67. The interlocking ribs 67 are embedded in the annular recesses on the outer side of the small diameter cylinder 32. Figure 5 As shown in FIG. 1 , the top end surface of the engaging rib 67 is a concave surface corresponding to the outer surface of the small diameter cylinder 32. The large diameter cylinder 31 is inserted into the engaging concave portion 68. Figure 6 As shown, the inner surface of the fitting recess 68 is a concave surface corresponding to the outer surface of the large-diameter cylindrical portion 31 .

[0042] The first support portion 63, the second support portion 64, and the third support portion 65 are separated from each other in the circumferential direction. The first support portion 63, the second support portion 64, and the third support portion 65 are connected to each other via a connecting portion. As the connecting portion, a connecting plate portion 70, a first base portion 72, a second base portion 73, a third base portion 74, a first base plate portion 75, and a second base plate portion 76 are provided.

[0043] The connecting plate portion 70 is formed as a C-shaped plate. The connecting plate portion 70 has a shape in which a U-shaped slit 71 is formed in a circular plate. Figure 7 As shown, the width dimension of the slit 71 is substantially the same as the outer diameter of the large diameter cylinder 31. The shape of the slit 71 is a shape corresponding to the trajectory of a circle having a diameter substantially the same as the outer diameter of the large diameter cylinder 31 moving parallel to the center of the circular plate to the outer edge. The connecting plate portion 70 is provided in a pair separated in the axial direction. The connecting plate portion 70A of one side of the pair of connecting plate portions 70 is located at one end of the retaining member 60 in the axial direction. Here, the connecting plate portion 70B of the other side of the pair of connecting plate portions 70 is located in the middle of the retaining member 60 in the axial direction. The cylindrical portion 85 extends from the connecting plate portion 70B toward the other end of the retaining member 60 in the axial direction.

[0044] The first base portion 72, the second base portion 73, and the third base portion 74 connect the pair of connecting plate portions 70 in the axial direction. The first base portion 72, the second base portion 73, and the third base portion 74 are arranged to be separated from each other in the circumferential direction. With respect to the third base portion 74, the first base portion 72 is located on one side in the circumferential direction, and the second base portion 73 is located on the other side. With respect to the connecting plate portion 70, the first base portion 72, the second base portion 73, and the third base portion 74 are located on the side opposite to the opening of the slit 71.

[0045] The first base plate portion 75 extends from the first base portion 72 in a direction intersecting the axial direction. The second base plate portion 76 extends from the second base portion 73 in a direction intersecting the axial direction. The top end of the first base plate portion 75 and the top end of the second base plate portion 76 are respectively used as free ends. Here, the first base plate portion 75 and the second base plate portion 76 extend parallel to each other toward the side where the opening of the slit 71 is located. The first base plate portion 75 and the second base plate portion 76 are formed to be thinner than the first base portion 72 and the second base portion 73. As a result, compared with the case where the first base plate portion 75 and the second base plate portion 76 have the same thickness as the first base portion 72 and the second base portion 73, it is easy to elastically deform starting from the connecting portion of the first base portion 72 and the second base portion 73 to expand the interval between the top ends.

[0046] The first supporting portion 63 is provided on the inner surface of the free end portion of the first base plate portion 75. The second supporting portion 64 is provided on the inner surface of the free end portion of the second base plate portion 76. The third supporting portion 65 is provided on the inner surface of the third base portion 74. The first supporting portion 63 and the second supporting portion 64 support a portion of the upper half of the corrugated tube 30 that is not supported by the second small diameter holding portion 79. The third supporting portion 65 supports a portion of the lower half of the corrugated tube 30 that is supported by the second small diameter holding portion 79.

[0047] A through hole 77 is formed between the first base portion 72 and the third base portion 74. The through hole 77 is the same as or larger than the first support portion 63 in a plan view. The through hole 77 is a hole for extracting the mold portion that forms the first support portion 63 when molding the retainer 60. Similarly, a through hole 77 for extracting the mold portion that forms the second support portion 64 is also formed between the second base portion 73 and the third base portion 74.

[0048] The interlocking rib 78 protrudes from the inner surface of the slit 71 of the connecting plate portion 70. The interlocking rib 78 extends in a U-shape in the same manner as the slit 71. The connecting plate portion 70 and the interlocking rib 78 constitute a second small-diameter retaining portion 79. The circumferential end of the interlocking rib 78 extends to a position above the insertion port 66. The circumferential end of the interlocking rib 78 extends to the vicinity of the opening of the slit 71. Thus, when the corrugated tube 30 is retained by the retaining member 60, the interlocking rib 78 can be embedded in the small-diameter cylindrical portion 32 before being inserted into the insertion port 66. Thus, before being inserted into the insertion port 66, the corrugated tube 30 and the retaining member 60 can be positioned in the axial direction and in the width direction of the slit 71.

[0049] The holding object portion 80 is provided on the outer surface of the holder 60. The holding object portion 80 has the same concavoconvex outer surface in the axial direction as the outer surface of the large-diameter corrugated tube 90. That is, the holding object portion 80 has: a large-diameter outer surface portion 81 corresponding to the outer surface of the large-diameter cylinder portion 91; and a small-diameter outer surface portion 82 corresponding to the outer surface of the small-diameter cylinder portion 92. The large-diameter outer surface portion 81 and the small-diameter outer surface portion 82 are alternately continuous in the axial direction.

[0050] The holding target portion 80 includes a first holding target portion 83 and a second holding target portion 84. The first holding target portion 83 is provided on the outer surface of the small-diameter holding portion 61. The second holding target portion 84 is provided beside the small-diameter holding portion 61 in the axial direction.

[0051] Here, the concavoconvex outer surface is continuous in the axial direction from one end to the other end of the holder 60. The portion of the concavoconvex outer surface provided on the outer surface of the small-diameter holding portion 61 is referred to as the first holding target portion 83, and the portion provided on the outer surface of the portion other than the small-diameter holding portion 61 is referred to as the second holding target portion 84. Here, the cylindrical portion 85 extending from the connecting plate portion 70B in the axial direction toward the other end of the holder 60 is referred to as the portion other than the small-diameter holding portion 61.

[0052] Specifically, if Figure 4As shown, no concavoconvexity is formed on the inner surface of the cylindrical portion 85. The cylindrical portion 85 is continuous in the axial direction with the same inner diameter. The inner diameter of the cylindrical portion 85 is larger than the outer diameter of the large-diameter cylindrical portion 31. The portion of the concavoconvex outer surface of the retainer 60 formed in the cylindrical portion 85 is used as the second retaining object portion 84. The wall thickness of the position where the outer surface of the cylindrical portion 85 is a concave portion is thicker than the wall thickness of the large-diameter corrugated tube 90. The wall thickness of the position where the outer surface of the cylindrical portion 85 is a convex portion is thicker than the wall thickness of the position where the outer surface of the cylindrical portion 85 is a concave portion.

[0053] The concavoconvex outer surface provided on the outer surface of the connecting plate portion 70, the first base portion 72, the second base portion 73 and the third base portion 74 is used as the first holding object portion 83. The outer surface of the first base portion 72, the second base portion 73 and the third base portion 74 is provided with a large diameter outer surface portion 81. Figure 4 As shown, the large diameter outer surface portion 81 is embedded in the fitting recess 50 of the main body portion 41. Here, a plurality of (here, three) large diameter outer surface portions 81 are provided along the axial direction. The small diameter outer surface portions 82 are provided between the plurality of large diameter outer surface portions 81. Figure 4 As shown, the engaging rib 49 of the main body 41 is embedded in the small diameter outer surface portion 82. The outer surface of the connecting plate portion 70 is used as the small diameter outer surface portion 82. Figure 7 As shown, the fitting rib 49A1 and the fitting rib 49B are located outside the connecting plate portion 70. The holding target portion 80 is held by both the main body side large diameter holding portion 48A and the cover side large diameter holding portion 48B.

[0054] The length from one end of the large diameter outer surface portion 81 of the first base portion 72 to one end of the large diameter outer surface portion 81 of the second base portion 73 is shorter than the length of half the circumference of the large diameter cylinder 91. The length from one end of the large diameter outer surface portion 81 of the first base portion 72 to one end of the large diameter outer surface portion 81 of the second base portion 73 is longer than the length of 1 / 4 of the circumference of the annular protrusion. The length from one end of the large diameter outer surface portion 81 of the first base portion 72 to one end of the large diameter outer surface portion 81 of the second base portion 73 is longer than the length of 1 / 3 of the circumference of the annular protrusion.

[0055] The retainer 60 is retained by the large-diameter retaining portion 48, and its movement in the axial direction and in the direction intersecting the axial direction relative to the protector 40 is restricted. The bellows 30 is retained by the small-diameter retaining portion 61, and its movement in the axial direction and in the direction intersecting the axial direction relative to the retainer 60 is restricted. Even if the retainer 60 is retained by the large-diameter retaining portion 48, its rotation around the axis relative to the protector 40 is not restricted. Even if the bellows 30 is retained by the small-diameter retaining portion 61, its rotation around the axis relative to the retainer 60 is not restricted.

[0056] Even if the holder 60 rotates about the axis relative to the protector 40, the holding target portion 80 provided at least one of the first base portion 72, the second base portion 73, and the third base portion 74 is still held by the large-diameter holding portion 48. Here, even if the holder 60 rotates about the axis relative to the protector 40, the holding target portion 80 provided at least two of the first base portion 72, the second base portion 73, and the third base portion 74 are still held by the large-diameter holding portion 48.

[0057] The large-diameter holding portion 48 holds at least one of the first holding target portion 83 and the second holding target portion 84. Here, the large-diameter holding portion 48 holds the first holding target portion 83.

[0058] like Figure 4 As shown, in the main body 41 and the holder 60, the fitting rib 49A is located outside the small diameter outer surface 82 of the first small diameter holding portion 62, and the large diameter outer surface 81 of the first small diameter holding portion 62 is embedded in the fitting recess 50. Thus, the movement of the holder 60 in both axial directions is restricted.

[0059] In addition, if Figure 4 As shown, in the cover 47 and the retainer 60, the large diameter outer surface portion 81 of the second small diameter retainer 79 is located axially inside relative to the interlocking rib 49A1 located radially outside the connecting plate portion 70B. As a result, the movement of the retainer 60 in one axial direction (the direction in which the bellows 30 is pulled out from the protector 40) is restricted. In the cover 47 and the retainer 60, the movement of the retainer 60 in the other axial direction (the direction in which the bellows 30 is inserted into the protector 40) is not restricted.

[0060] In addition, if Figure 7 As shown, in the protector 40, substantially the entire circumference of the small diameter outer surface portion 82 of the connecting plate portion 70 faces the top end surface of the fitting rib 49A1 and the top end surface of the fitting rib 49B. Thus, the movement of the retainer 60 in the direction intersecting the axial direction is restricted.

[0061] The center of the bellows 30 coincides with the center of the large diameter bellows 90 when the large diameter bellows 90 is not held by the large diameter holding portion 48 via the holder 60. The bellows 30 is held by the large diameter holding portion 48 so that the center of the bellows 30 coincides with the center of the large diameter holding portion 48.

[0062] The first base plate 75 and the second base plate 76 are located at the position of the protrusion 45, and the holding target portion 80 of this portion is shorter than half of the circumference. Thus, even when the protrusion 45 is provided on the main body 41, the holder 60 can be easily accommodated in the main body 41.

[0063] Specifically, since the holding target portion 80 of the holder 60 is thicker than the large-diameter corrugated tube 90, it is less likely to be elastically deformed than the large-diameter corrugated tube 90. By making the holding target portion 80 shorter than half the circumference at the position of the protrusion 45, the dimension of the holding target portion 80 and the protrusion 45 that interfere with each other can be reduced in the width direction of the protective member when the holding target portion 80 passes through the protrusion 45. As a result, the amount of elastic deformation required when the holding target portion 80 passes through the protrusion 45 can be reduced, making it easier for the holding target portion 80 to pass through the protrusion 45.

[0064] <Effects, etc.> According to the wiring harness 10 having the above structure, the corrugated tube 30 is supported by the first supporting portion 63, the second supporting portion 64, and the third supporting portion 65, and the corrugated tube 30 can be firmly held on the retaining member 60. Thus, the corrugated tube 30 of a small diameter can be firmly held on the protective member 40 for the large diameter corrugated tube 90. In the wiring harness 10, the terminal portion is located at the end portion of the electric wire 20 extending from the protective member 40. When the terminal portion is processed by connecting the terminal portion, the corrugated tube 30 may be bent or twisted together with the electric wire 20. At this time, the force acting on the corrugated tube 30 may become a force that causes the corrugated tube 30 to be separated from the retaining member 60. Even so, by firmly holding the corrugated tube 30 on the retaining member 60, it is possible to suppress the corrugated tube 30 from being separated from the retaining member 60.

[0065] Furthermore, since the protector 40 used for the large-diameter corrugated tube 90 can be used for the small-diameter corrugated tube 30 , it is possible to suppress an increase in the number of component types and a cost increase in a plurality of wire harnesses 10 having different numbers of circuits.

[0066] In addition, the first support portion 63 is provided at the free end of the first base plate portion 75, and the second support portion 64 is provided at the free end of the second base plate portion 76. Therefore, the first support portion 63 and the second support portion 64 are easily elastically deformed to expand the width of the insertion port 66 when the corrugated tube 30 is inserted or removed.

[0067] In addition, the holding target portion 80 is held by both the main body side large diameter holding portion 48A and the cover side large diameter holding portion 48B. Thus, the holder 60 can be held more firmly on the protector 40.

[0068] In addition, the center of the bellows 30 coincides with the center of the large diameter bellows 90 when the large diameter bellows 90 is not held in the large diameter holding portion 48 by the holder 60. Thus, even when the bellows 30 is used, it is easy to set the path length as when the large diameter bellows 90 is used. In addition, the holder 60 is held by the protector 40 so that the center of the small diameter holding portion 61 of the holder 60 coincides with the center of the large diameter holding portion 48 of the protector 40. Therefore, even when the holder 60 and the protector 40 are not fixed and the holder 60 rotates about the central axis relative to the protector 40, it is difficult for the holder 60 to push the bellows 30 in the radial direction.

[0069] In addition, the large diameter holding portion 48 holds at least one of the first holding target portion 83 and the second holding target portion 84. Thus, the holding member 60 can be installed in any direction along the axial direction. Fig.10 and Fig.11 Provide explanation. Fig.10 is a cross-sectional view showing a wire harness 110 according to a modified example. Fig.10 and Figure 4 Section view at the same location. Fig.11 It is an exploded perspective view showing a protector 40 and a holder 60 of a wire harness 110 according to a modified example.

[0070] exist Fig.10 In the wire harness 110 shown, the orientation of the retainer 60 is different from that of the retainer 60 of the wire harness 10. In the wire harness 110, the retainer 60 is retained by the protector 40 in a manner such that the orientations of one end and the other end are opposite to those of the retainer 60 of the wire harness 10. In the example shown of the wire harness 110, the large-diameter retaining portion 48 retains the second retaining target portion 84.

[0071] In the wire harness 110, the large diameter outer surface portion 81 of the second holding object portion 84 is embedded in both the fitting recess 50 of the main body portion 41 and the fitting recess 50 of the cover portion 47. In addition, the small diameter outer surface portion 82 of the second holding object portion 84 is embedded in both the fitting rib 49A of the main body portion 41 and the fitting rib 49B of the cover portion 47. Thus, as in the case where the large diameter holding portion 48 holds the large diameter corrugated tube 90, the movement of the retainer 60 in both axial directions relative to the main body portion 41 and the cover portion 47 can be restricted. In addition, the protrusion 45 can be located outside the large diameter outer surface portion 81 of the second holding object portion 84. Therefore, as in the case where the large diameter holding portion 48 holds the large diameter corrugated tube 90, the protrusion 45 can suppress the retainer 60 from coming out.

[0072] [Note] So far, the structure in which both the first supporting portion 63 and the second supporting portion 64 are provided at the free end portion has been described, but this structure is not essential. For example, both the first supporting portion 63 and the second supporting portion 64 may not be provided at the free end portion. In this case, for example, the first supporting portion 63 may be provided at the first base portion 72, and the second supporting portion 64 may be provided at the second base portion 73. In addition, for example, only one of the first supporting portion 63 and the second supporting portion 64 may be provided at the free end portion.

[0073] In addition, the structure in which the holding target portion 80 is held by both the main body side large diameter holding portion 48A and the cover side large diameter holding portion 48B has been described above, but this structure is not essential. For example, the holding target portion 80 may be held only by the main body side large diameter holding portion 48A.

[0074] In addition, the structure in which the center of the bellows 30 coincides with the center of the large diameter bellows 90 when the large diameter bellows 90 is not held in the large diameter holding portion 48 by the retainer 60 has been described so far, but this structure is not essential. The center of the bellows 30 may not coincide with the center of the large diameter bellows 90 when the large diameter bellows 90 is not held in the large diameter holding portion 48 by the retainer 60.

[0075] Furthermore, the configurations described in the above-mentioned embodiments and modifications may be appropriately combined within a range that does not contradict each other. Description of Reference Numerals

[0076] 10, 110 wiring harness 20 Wire 30 Bellows 31 Large diameter barrel 32 Small diameter cylinder 40 Protective parts 41 Main body 42 bottom 43 Sidewall 44 Upper opening 45 protrusion 46 Through hole 47 cover 48 Large diameter holding part 48A Main body side large diameter retaining part 48B Cover side large diameter holding part 49, 49A, 49A1, 49A2, 49B Mosaic rib 50 fitting recess 51 Connecting rib 60 retaining parts 61 Small diameter holding part 62 1st small diameter holding part 63 1st support part 64 Second support part 65 The third support part 66 Insertion port 67 chimeric ribs 68 fitting recess 70, 70A, 70B Connecting plate 71 Slit 72 1st base part 73 Second base part 74 3rd base part 75 1st base plate 76 Second base plate 77 Through hole 78 chimeric ribs 79 Second small path maintenance unit 80 Keep object part 81 Large diameter outer surface 82 Path Surface 83 The first part of the maintenance object 84Second retention object part 85 cylindrical part 90 Large diameter bellows 91 Large diameter barrel 92 Small diameter cylinder

Claims

1. A wiring harness having: electric wire; a corrugated tube covering the electric wire; A protective member provided with a large-diameter holding portion capable of holding a large-diameter bellows having a size larger than that of the bellows; and The retainer includes a small diameter retaining portion retaining the corrugated tube and a retaining object portion retained by the large diameter retaining portion. The small diameter holding portion includes a first supporting portion, a second supporting portion, and a third supporting portion that support different portions of the corrugated tube in the circumferential direction. An insertion port for inserting and removing the corrugated tube is formed between the first supporting portion and the second supporting portion in the small diameter holding portion. The third supporting portion supports the corrugated tube from a side opposite to the insertion port at the same position as the first supporting portion and the second supporting portion in the axial direction of the corrugated tube.

2. The wire harness according to claim 1, wherein: The small diameter holding portion includes a first base plate portion and a second base plate portion, each of which extends in a direction intersecting the axial direction and has a top end as a free end. The first support portion is provided at the free end portion of the first base plate portion, The second support portion is provided at the free end portion of the second base plate portion.

3. The wire harness according to claim 1 or claim 2, wherein: The protective member includes: a main body having a bottom and a side wall and opening on a side opposite to the bottom; and a cover closing the opening of the main body. The large diameter holding portion includes a main body side large diameter holding portion formed on the main body portion and a cover side large diameter holding portion formed on the cover portion. The holding target portion is held by both the main body side large diameter holding portion and the cover side large diameter holding portion.

4. The wire harness according to claim 1 or claim 2, wherein: The center of the corrugated tube coincides with the center of the large-diameter corrugated tube when the large-diameter corrugated tube is not held by the large-diameter holding portion by the holding member.

5. The wire harness according to claim 1 or claim 2, wherein: The holding object portion comprises: a first holding object portion provided on the outer surface of the small-diameter holding portion; and a second holding object portion provided beside the small-diameter holding portion along the axial direction. The large-diameter holding portion holds at least one of the first holding target portion and the second holding target portion.

Images