Wire harness

Abstract

To provide a wire harness which is capable of performing inter-wire cutoff between electric wires and grounding of a braised conductor and capable of improving a design freedom degree of a penetration hole for fixing a bracket to a mounting panel by means of a fastening member.SOLUTION: A wire harness WH comprises a bracket 30 which has conductivity and is mounted to a mounting panel 100 via a grommet 10. The bracket 30 includes second fastening penetration holes 37 and 38 which correspond to first fastening penetration holes 17 and 18 of the grommet 10 and penetrate from a bracket front face 35 to a bracket rear face 36. Collar-side cylindrical parts 120A and 121A are inserted into the first fastening penetration holes 17 and 18 and the second fastening penetration holes 37 and 38, flange parts 120B and 121B are opposed and in contact with a bracket-side annular part 32 in an extension direction, and one-side ends of the collar-side cylindrical parts 120A and 121A in the extension direction are abutted to the mounting panel 100, such that the bracket 30 and the mounting panel 100 are electrically connected.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] When wiring a high-voltage shielded wiring material (hereinafter simply referred to as "wiring material") under the floor of a vehicle such as an electric vehicle, the wiring material is inserted into a panel through-hole formed in a mounting panel that separates the interior and exterior of the vehicle as needed (see, for example, Patent Document 1). In this case, for example, a grommet with a metal plate that has a body earthing structure and a waterproof function may be attached to the panel through-hole.

[0003] Conventionally, when a sheet metal grommet with a wiring material inserted therein is assembled into a panel through-hole, the braided conductor covering the wiring material is electrically connected to the mounting panel via a conductive bracket that constitutes the sheet metal grommet, thereby grounding the braided conductor. In this case, in order to stabilize the electrical connection between the bracket and the mounting panel when the sheet metal grommet is attached to the mounting panel, the bolt through-hole provided in the bracket is extended by drawing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-192279 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the bolt through-hole is narrowed to ensure the contact area between the bracket and the mounting panel, it is necessary to reserve space around the bolt through-hole to ensure strength, which poses the problem of restricting the design freedom as component sizes are limited by restrictions imposed by the vehicle shape, etc.

[0006] An object of the present invention is to provide a wire harness that is capable of waterproofing between electric wires and grounding a braided conductor, and that can improve the design freedom of through holes for fixing a bracket to a mounting panel with a fastening member. [Means for solving the problem]

[0007] In order to achieve the above object, a wire harness according to the present invention comprises at least one wiring material; a grommet into which the wiring material is inserted and a portion of which is inserted into a panel through-hole formed in a mounting panel, sealing the gap between the wiring material and the mounting panel to seal off water between the wiring material and the mounting panel; a conductive bracket into which a portion of the grommet is inserted and which is attached to the mounting panel via the grommet; and a conductive bracket that is disposed on an outer surface of the wiring material on one side of the mounting panel in the extending direction of the wiring material. and a braided conductor covering the outer peripheral surface where the bracket is positioned and electrically connected to the bracket, the grommet having a grommet-side tubular portion into which the wiring material is inserted, and an annular grommet-side annular portion having at least a pair of first fastening through holes and facing the mounting panel in the extending direction when the grommet-side tubular portion is inserted into the panel through-hole, the bracket having at least a pair of second fastening through holes corresponding to the first fastening through-holes and a bracket-side annular portion facing the mounting panel in the extending direction across the grommet-side annular portion when the bracket is attached to the mounting panel via the grommet, the bracket further comprising: a collar member having electrical conductivity and inserted into the first fastening through-hole and the second fastening through-hole in the attached state; and a fastening member inserted into a collar through-hole formed in the collar member and fastening the bracket to the mounting panel in the attached state, the second fastening through-hole penetrating from the front surface to the back surface of the bracket-side annular portion, and the collar member having the collar through-hole. and a flange portion protruding from the outer peripheral surface of the collar side cylindrical portion in a direction perpendicular to the extension direction, and in a fastened state in which the mounting panel and the bracket are fastened by the fastening member, the collar side cylindrical portion is inserted into the first fastening through-hole and the second fastening through-hole, and the flange portion contacts and faces the bracket side annular portion in the extension direction, and one end of the collar side cylindrical portion in the extension direction abuts against the mounting panel, thereby electrically connecting the bracket and the mounting panel. [Effects of the Invention]

[0008] The wire harness according to the present invention has the advantage that it is possible to achieve watertightness between the electric wires and ground the braided conductor, and also to improve the design freedom of the through holes for fixing the bracket to the mounting panel with the fastening members. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a main part of a wire harness according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of a main part of the wire harness according to the embodiment. [Figure 3] FIG. 3 is an exploded perspective view of a main part of the wire harness according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of a main part of the wire harness according to the embodiment. [Figure 5] FIG. 5 is a partially enlarged cross-sectional view of a main part of the wire harness according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments. That is, the components in the following embodiments include those that a person skilled in the art would easily imagine or that are substantially the same, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0011] [Embodiment] 1 is a high-voltage shielded wiring material that is routed, for example, under the floor of a vehicle such as an electric vehicle. The wire harness WH is routed by being inserted into a panel through-hole 101 formed in a mounting panel 100 that separates an exterior space (e.g., an engine compartment) from an interior space (e.g., a cabin) of a vehicle (not shown). The wire harness WH includes two wiring materials W, a braided conductor Wh for shielding the wiring material W, and a grommet unit 1 into which the two wiring materials W are inserted.

[0012] The mounting panel 100 is, for example, a component of the body of a vehicle, and is a single electrically conductive metal plate. As shown in Figures 2 and 3, the mounting panel 100 has an exterior side surface 102 facing the exterior of the vehicle, an interior side surface 103 facing the interior of the vehicle, and a panel through-hole 101 that penetrates from the exterior side surface 102 to the interior side surface 103. The panel through-hole 101 has been burred, and has a burred portion 101a that protrudes from the exterior side surface 102 side to the interior side surface 103 side.

[0013] As shown in Figs. 1 to 4, the mounting panel 100 has a pair of stud bolts 105, 106 protruding from the exterior side surface 102. The pair of stud bolts 105, 106 are an example of fastening members, and are provided at positions facing each other across the panel through-hole 101. Nuts 110, 111, which are another example of fastening members, are threadedly engaged with the stud bolts 105, 106. A grommet unit 1 having a body earthing structure and a waterproof function is attached to the panel through-hole 101.

[0014] The grommet unit 1 is attached to the panel through hole 101 with the wiring material W inserted into the panel through hole 101, and is fixed to the exterior surface 102 of the mounting panel 100 by inserting the stud bolts 105, 106 into the collar members 120, 121 and screwing nuts 110, 111 onto the stud bolts 105, 106.

[0015] In the following description, the illustrated X direction is the extension direction of the wire harness WH in this embodiment. The Y direction is a first direction perpendicular to the extension direction of the wire harness WH in this embodiment. The Z direction is a second direction perpendicular to the extension direction of the wire harness WH in this embodiment and the first direction. The second direction is, for example, the arrangement direction of two wiring materials W in the wire harness WH. The X direction, Y direction, and Z direction are perpendicular to each other. The first direction and the second direction are not limited to the vertical direction and the horizontal direction perpendicular to the vertical direction. The first direction and the second direction correspond to the extension direction of the mounting panel 100.

[0016] The extension direction in this embodiment corresponds to the plate thickness direction of the mounting panel 100 described above, and corresponds to the insertion direction of the wiring material W and the grommet unit 1 into the panel through-hole 101. Here, for ease of understanding, the two wiring materials W are described as being linearly wired along the extension direction, but this is not limited thereto. When the grommet unit 1 is attached to the mounting panel 100, the two wiring materials W inserted into the grommet unit 1 may be partially bent or curved so as to deviate from the extension direction. Furthermore, unless otherwise specified, the directions used in the following description are described as directions when the grommet unit 1 is assembled into the panel through-hole 101.

[0017] The wiring material W is, for example, composed of a single electric wire. The electric wire has a conductor portion (core wire) made of multiple conductive metal wires covered with an insulating coating portion. Here, the wiring material W is, for example, a thick electric wire used in high-voltage systems.

[0018] The braided conductor Wh covers and shields the outer peripheral surface of the wiring material W in the extension direction that is located on the outdoor side. The braided conductor Wh is formed into a tubular shape by weaving multiple conductive braided wires into a mesh pattern. One end of the braided conductor Wh in the extension direction is fixed to the grommet unit 1 by a shield ring SR, is electrically connected to the grommet unit 1, and is grounded via the grommet unit 1 and the grounding member of the mounting panel 100. The grommet unit 1 is electrically connected to the braided conductor Wh. Note that the mesh shape of the braided conductor Wh is omitted from the braided conductor Wh shown in Figures 1 and 4 for ease of illustration.

[0019] The grommet unit 1 is assembled into the panel through-hole 101 with the wiring material W of the wire harness WH inserted and sheathed around the wiring material W, thereby electrically connecting and grounding the braided conductor Wh to the mounting panel 100 and waterproofing the panel through-hole 101. The grommet unit 1 protects the wiring material W passing through the panel through-hole 101 and waterproofs the panel through-hole 101, as well as providing functions such as dustproofing and soundproofing. The grommet unit 1 includes a grommet 10 and a bracket 30.

[0020] The grommet 10 has two wiring materials W inserted therein, and a portion of the grommet is inserted into a panel through-hole 101 formed in the mounting panel 100. The grommet 10 seals the gap between the wiring materials W and the mounting panel 100, thereby sealing off the gap between the wiring materials W and the mounting panel 100. The grommet 10 is attached to the mounting panel 100 with a portion of the grommet inserted into the panel through-hole 101. The grommet 10 is formed from an insulating elastic resin material (e.g., ethylene-propylene-diene rubber (EPDM)) that has low rigidity and high flexibility, such as rubber or a thermoplastic elastomer. As shown in Figures 2 to 4, the grommet 10 includes a grommet-side tubular portion 11 and a grommet-side annular portion 12, which are integrally formed as an elastic body.

[0021] The grommet-side tubular portion 11 is a portion into which the wiring material W is inserted along the extending direction. The grommet-side tubular portion 11 includes a tubular main body portion 13, a cylindrical portion 14A, and a connecting portion 14B.

[0022] 2 and 3, the cylindrical main body 13 is a part that is inserted into the panel through-hole 101 and assembled to the panel through-hole 101. The cylindrical main body 13 is formed in a cylindrical shape to match the shape of the panel through-hole 101 (burring processed portion 101a), and has a circular shape when viewed from the indoor side in the extension direction.

[0023] The cylindrical portion 14A is a portion that is open at both ends in the extension direction of the cylindrical portion 14A and into which the wiring material W is inserted. The cylindrical portion 14A is formed integrally with the connecting portion 14B and is connected to the tubular main body portion 13 via the connecting portion 14B. One or more cylindrical portions 14A are formed to match the number of wiring materials W to be inserted. The cylindrical portion 14A is configured so that when the wiring material W is inserted inside, it elastically deforms to adhere to the outer peripheral surface of the wiring material W that is on the outside of the room, thereby sealing the entire outer peripheral surface of the wiring material W.

[0024] The connecting portion 14B is provided so as to surround the cylindrical portion 14A and is formed so as to connect the cylindrical portion 14A and the cylindrical main body portion 13. As shown in Fig. 4, the connecting portion 14B has a substantially S-shaped cross section and is allowed to bend in the extension direction, the first direction, and the second direction.

[0025] The grommet side annular portion 12 is a portion that faces the mounting panel 100 in the extension direction when the grommet side tubular portion 11 is inserted into the panel through-hole 101. The grommet side annular portion 12 extends from the tubular main body portion 13 in a direction perpendicular to the extension direction.

[0026] The grommet-side annular portion 12 has four grommet fixing portions 19, each having a generally cylindrical shape, protruding from the grommet surface 15 toward the exterior side in the extension direction. The grommet surface 15 forms a flat surface along a direction perpendicular to the extension direction. In a first installation state in which the bracket 30 is attached to the grommet 10, the grommet surface 15 faces the bracket 30 in the extension direction. When viewed from a direction perpendicular to the extension direction, the ends of each of the four grommet fixing portions 19 facing the interior side in the extension direction bulge radially outward relative to the other portions. Two of the four grommet fixing portions 19 are located on one side of the two cylindrical portions 14A in the first direction, and the remaining two are located on the other side of the first direction. Of the four grommet fixing portions 19, the two located on one side of the first direction and the two located on the other side of the first direction are aligned along the alignment direction of the two wiring materials W.

[0027] The grommet-side annular portion 12 has a pair of first fastening through holes 17, 18 penetrating in the extension direction. Each of the pair of first fastening through holes 17, 18 penetrates from the grommet surface 15 of the grommet-side annular portion 12 to the grommet back surface 16 on the opposite side of the grommet surface 15. When viewed in the extension direction, each of the pair of first fastening through holes 17, 18 has a circular shape. The pair of first fastening through holes 17, 18 are located outside the grommet fixing portion 19 and are positioned opposite each other in the first direction across the connecting portion 14B. The pair of first fastening through holes 17, 18 are located corresponding to a pair of stud bolts 105, 106 of the mounting panel 100. In a second mounting state in which the bracket 30 is mounted to the mounting panel 100 via the grommet 10, the stud bolt 105 is inserted into the first fastening through hole 17, and the stud bolt 106 is inserted into the first fastening through hole 18. In the second mounting state, the stud bolts 105, 106 and the collar members 120, 121 are inserted into the first fastening through holes 17, 18.

[0028] A portion of the grommet 10 is inserted into the bracket 30, and the bracket 30 is attached to the mounting panel 100 via the grommet 10. The bracket 30 has openings at both ends in the extension direction, into which the wiring material W is inserted. The bracket 30 is supported on the mounting panel 100 via the grommet 10. The bracket 30 is made of a conductive metal material or the like. As shown in Figures 2 to 4, the bracket 30 includes a bracket-side cylindrical portion 31 and a bracket-side annular portion 32.

[0029] The grommet-side annular portion 12 has a water-stopping protrusion 10a and an annular water-stopping protrusion 10b. As shown in FIGS. 3 and 4, the water-stopping protrusion 10a is formed to protrude from the outer peripheral end of the grommet-side annular portion 12 toward the grommet back surface 16. FIG. 4 shows the state before nuts 110, 111 are threaded onto the stud bolts 105, 106. FIG. 5 shows the fastened state in which the nut 110 (and nut 111) is threaded onto the stud bolt 105 (and stud bolt 106), fastening the mounting panel 100 and the bracket 30. The water-stopping protrusion 10a elastically deforms in the fastened state and comes into close contact with the exterior side surface 102 together with the grommet back surface 16. As shown in FIGS. 3 and 4, the annular water-stopping protrusion 10b is annularly arranged to surround each of the first fastening through-holes 17, 18 when viewed from the indoor side in the extension direction. When viewed from a direction perpendicular to the extending direction, the annular water-stopping projection 10b is formed to protrude toward the indoor side from the grommet back surface 16. The annular water-stopping projection 10b elastically deforms in the above-mentioned fastened state and comes into close contact with the outdoor side surface 102 together with the grommet back surface 16.

[0030] As shown in Figures 2 and 3, the bracket-side tubular portion 31 is a portion that is open at both ends in the extension direction and into which the wiring material W is inserted. The bracket-side tubular portion 31 has a first opening 33 on one side in the extension direction and a second opening 34 on the other side, and the wiring material W is inserted from either the first opening 33 or the second opening 34 to the other. The first opening 33 and the second opening 34 both have an oval shape when viewed from the extension direction. In the first mounting state, a portion of the grommet 10 is inserted into the bracket-side tubular portion 31. Specifically, in the first mounting state, the two cylindrical portions 14A and a portion of the connecting portion 14B are inserted into the bracket-side tubular portion 31. When viewed from the extension direction, the bracket-side tubular portion 31 has an oval shape having a major axis and a minor axis, and two wiring materials W are arranged along the major axis direction. The bracket-side cylindrical portion 31 has a bracket-side annular portion 32 provided at the end portion on the indoor side in the extending direction.

[0031] The bracket side annular portion 32 is an annular portion that protrudes in a direction perpendicular to the extending direction from a second opening 34 at the end of the bracket side tubular portion 31 on the exterior side in the extending direction. The bracket side annular portion 32 extends in a direction perpendicular to the extending direction from the bracket side tubular portion 31. The shape of the bracket side annular portion 32 when viewed from the extending direction is substantially the same as the shape of the grommet side annular portion 12.

[0032] The bracket-side annular portion 32 has four through holes 39 penetrating in the extension direction. Each of the four through holes 39 penetrates from a bracket surface 35 of the bracket-side annular portion 32 to a bracket back surface 36 on the opposite side of the bracket surface 35. The bracket surface 35 forms a flat surface along a direction perpendicular to the extension direction and, in the first attachment state, faces the grommet surface 15 in the extension direction. The four through holes 39 are provided corresponding to the four grommet fixing portions 19. In the first attachment state, a corresponding grommet fixing portion 19 is inserted into each through hole 39. All four through holes 39 have a circular shape when viewed from the extension direction. The bracket 30 is fixed to the grommet 10 with the four grommet fixing portions 19 fully inserted into the four through holes 39. Here, the state in which the grommet fixing portions 19 are fully inserted into the through holes 39 refers to a state in which the bracket back surface 36 and the grommet surface 15 are in contact.

[0033] The bracket-side annular portion 32 has a pair of second fastening through holes 37, 38 penetrating in the extension direction. Both of the pair of second fastening through holes 37, 38 penetrate the bracket-side annular portion 32 from the bracket front surface 35 to the bracket back surface 36. When viewed in the extension direction, both of the pair of second fastening through holes 37, 38 have a circular shape. The pair of second fastening through holes 37, 38 are located outside the through hole 39 and are positioned opposite each other in the first direction across the bracket-side cylindrical portion 31. The pair of second fastening through holes 37, 38 are located corresponding to a pair of stud bolts 105, 106 of the mounting panel 100. In the second mounting state, the stud bolt 105 is inserted into the second fastening through hole 37, and the stud bolt 106 is inserted into the second fastening through hole 38. In a second mounting state in which the bracket 30 is mounted to the mounting panel 100 via the grommet 10, the stud bolts 105, 106 and collar members 120, 121 of the mounting panel 100 are inserted into the second fastening through holes 37, 38. That is, in the second mounting state, the stud bolts 105, 106 and collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38.

[0034] The bracket-side annular portion 32 has an annular peripheral wall portion 32a that protrudes from an end of the outer periphery toward the bracket back surface 36. The annular peripheral wall portion 32a is formed around the entire outer periphery of the bracket-side annular portion 32. In the second mounting state, the annular peripheral wall portion 32a faces the exterior side surface 102 in the extension direction via the grommet-side annular portion 12. The height of the annular peripheral wall portion 32a in the extension direction is shorter than the length of collar-side cylindrical portions 120A, 121A, which will be described later, in the extension direction.

[0035] In the second mounting state, the collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, and are inserted into the stud bolts 105, 106, and are interposed between the grommet 10 and bracket 30 and the stud bolts 105, 106, thereby functioning as spacers for the grommet 10 and bracket 30. The collar members 120, 121 are made of a conductive metal material or the like that is less likely to deform under load than the grommet 10 and bracket 30. The collar members 120 and 121 have the same shape, and the collar member 120 is inserted into the first fastening through hole 17 and the second fastening through hole 37, and the collar member 121 is inserted into the first fastening through hole 18 and the second fastening through hole 38. The collar member 120 has a collar side tubular portion 120A and a flange portion 120B. The collar member 121 has a collar-side cylindrical portion 121A and a flange portion 121B.

[0036] The collar-side tubular portions 120A, 121A are open at both ends in the extension direction of the collar-side tubular portions 120A, 121A, and are portions into which the stud bolts 105, 106 are inserted. The collar-side tubular portions 120A, 121A have collar through-holes 120C, 121C into which the stud bolts 105, 106 are inserted. The collar through-holes 120C, 121C are circular when viewed in the extension direction. The outer diameters of the collar-side tubular portions 120A, 121A are larger than the inner diameters of the first fastening through-holes 17, 18 and smaller than the inner diameters of the second fastening through-holes 37, 38. In the fastened state described above, one end of the collar-side tubular portions 120A, 121A in the extension direction, i.e., the end on the indoor side in the extension direction, abuts against the exterior surface 102 of the mounting panel 100, as shown in FIG. 5 .

[0037] The flanges 120B, 121B are portions that protrude from the outer peripheral surface of the collar-side tubular portion 120A, 121A in a direction perpendicular to the extension direction. The flanges 120B, 121B are formed at one end of the collar-side tubular portion 120A, 121A. The flanges 120B, 121B have a circular shape when viewed from the extension direction. When the collar members 120, 121 are inserted into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38, the flanges 120B, 121B contact the bracket surface 35 in the extension direction (FIG. 4) (FIG. 4). In the fastened state, the flanges 120B, 121B contact the bracket surface 35 on one indoor side in the extension direction and contact the nuts 110, 111 on the other outdoor side in the extension direction.

[0038] In the fastened state in which the nuts 110, 111 are threaded onto the stud bolts 105, 106 to fasten the mounting panel 100 and the bracket 30, the collar side tubular portions 120A, 121A of the collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, the flange portions 120B, 121B face and contact the bracket side annular portion 32, and one end of the collar side tubular portions 120A, 121A in the extension direction abuts against the mounting panel 100, electrically connecting the bracket 30 and the mounting panel 100. The inner diameter of each of the first fastening through holes 17, 18 is smaller than the inner diameter of each of the second fastening through holes 37, 38. Therefore, when the collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, at least a portion of the outer surface of the collar side tubular portion 120A, 121A is pressed radially inward by the inner surface forming the first fastening through holes 17, 18.

[0039] 1 and 4, the shielding ring SR secures the exterior-side end of the braided conductor Wh to the bracket 30, electrically connecting the braided conductor Wh and the bracket 30. The shielding ring SR is made of a conductive metal material or the like and is formed in an annular shape. The shielding ring SR is secured to the bracket 30 with the exterior-side end of the braided conductor Wh sandwiched between the shielding ring SR and the outer peripheral surface of the bracket-side cylindrical portion 31.

[0040] Next, we will explain the installation procedure, which is a method for installing the wire harness WH using the grommet unit 1. It is assumed that the wire harness WH is inserted into the panel through-hole 101 and the grommet unit 1 is located on the exterior side of the vehicle. It is also assumed that the grommet 10 and the bracket 30 of the grommet unit 1 are in the first installation state.

[0041] First, the grommet unit 1 is inserted into the panel through-hole 101 from the outdoor side of the mounting panel 100, while the stud bolts 105, 106 are inserted into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38. In this case, while inserting the cylindrical main body 13 of the grommet 10 into the panel through-hole 101, the grommet unit 1 is fitted into the panel through-hole 101 so that the grommet-side annular portion 12 faces the outdoor side surface 102 in the extension direction and so that part of the cylindrical main body 13 is positioned outside the indoor side surface 103.

[0042] Next, the stud bolts 105, 106 are inserted into the collar through-holes 120C, 121C of the collar members 120, 121, and then the nuts 110, 111 are screwed onto the stud bolts 105, 106. Then, the nuts 110, 111 are tightened using a tightening tool such as an impact wrench, an air driver, or a nut runner, thereby fixing the grommet unit 1 to the mounting panel 100.

[0043] As shown in Fig. 4, the braided conductor Wh in this embodiment is fixed to the bracket 30 by a shield ring SR and is electrically connected to the bracket 30. Next, as described above, the grommet unit 1 is fitted into the panel through-hole 101, and the stud bolts 105, 106 are inserted into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38. After the stud bolts 105, 106 are inserted into the collar members 120, 121, the bracket 30 and the mounting panel 100 are fastened together. As a result, as shown in Fig. 5, the collar-side tubular portions 120A, 121A abut against the exterior side surface 102, and the flange portions 120B, 121B contact the bracket surface 35, thereby electrically connecting the bracket 30 and the mounting panel 100. Furthermore, in the fastened state, the bracket 30 is electrically connected to the mounting panel 100 via the flanges 120B, 121B, nuts 110, 111, and stud bolts 105, 106. In other words, in the fastened state, the collar side cylindrical portions 120A, 121A are inserted into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38, the flanges 120B, 121B face and contact the bracket side annular portion 32 in the extension direction, and one end of the collar side cylindrical portions 120A, 121A in the extension direction abuts against the mounting panel 100, electrically connecting the bracket 30 and the mounting panel 100. As a result, the braided conductor Wh can be grounded to the mounting panel 100.

[0044] As described above, the wire harness WH according to this embodiment includes the grommet 10, a portion of which is inserted into the panel through-hole 101 to provide a waterproof seal between the wiring material W and the mounting panel 100, and the bracket 30, which is conductive and is attached to the mounting panel 100 via the grommet 10. The bracket 30 has a bracket-side annular portion 32 having second fastening through-holes 37, 38 corresponding to the first fastening through-holes 17, 18 provided in the grommet 10, and the second fastening through-holes 37, 38 penetrate from the bracket front surface 35 to the bracket back surface 36. When the collar side tubular portions 120A, 121A are in the above-mentioned fastened state, the collar side tubular portions 120A, 121A are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, and the flange portions 120B, 121B contact opposite the bracket side annular portion 32 in the extension direction, and one end of the collar side tubular portions 120A, 121A in the extension direction abuts against the mounting panel 100, electrically connecting the bracket 30 and the mounting panel 100.

[0045] The above-described configuration ensures a sufficient contact area between the bracket 30 and the mounting panel 100 by using the collar members 120, 121. This eliminates the need for drawing the second fastening through holes 37, 38, which are bolt holes. This eliminates the need to secure space around the second fastening through holes 37, 38, improving the design flexibility of the second fastening through holes 37, 38 compared to drawing. Specifically, the second fastening through holes 37, 38 can be positioned close to the annular peripheral wall portion 32a, provided that the flanges 120B, 121B are not positioned outside the outer circumferential edge of the bracket-side annular portion 32. Furthermore, since drawing the second fastening through holes 37, 38 is unnecessary, processing costs can be reduced. Furthermore, the grommet 10 provides a watertight seal between the wiring material W and the mounting panel 100, ensuring watertightness between the wiring material W. Furthermore, in the above-mentioned fastened state, the bracket 30 and the mounting panel 100 are electrically connected, which enables grounding of the braided conductor Wh to the mounting panel 100. In this way, watertightness between the wiring material W and grounding of the braided conductor Wh are possible, and the design freedom of the second fastening through-holes 37, 38 can be improved.

[0046] The wire harness WH according to the embodiment of the present invention and the method for installing the wire harness WH described above are not limited to the above embodiment, and various modifications are possible within the scope of the claims. The wire harness WH according to the present embodiment may be configured by appropriately combining the components of the above-described embodiment and modified examples. The wire harness WH may also include various components such as exterior members such as a corrugated tube, a resin tape, and a protector, an electrical connection box, and a fixture.

[0047] In the above embodiment, the wiring material W is described as being made of a thick electric wire used in a high-voltage system, but it is not limited to this and may be made of a metal rod, a bundle of electric wires, etc. A metal rod is a conductive rod-shaped member whose outside is covered with an insulating coating. A bundle of electric wires is a bundle of electric wires.

[0048] In addition, in the above embodiment, there are two wiring materials W, but there may be one, or three or more. [Explanation of symbols]

[0049] 1 grommet unit 10 Grommets 11 Grommet side cylindrical part 12 Grommet side annular part 17,18 First fastening through hole 30 Bracket 31 Bracket side cylindrical portion 32 Bracket side annular part 35 Bracket surface 36 Back of bracket 37,38 Second fastening through hole 100 Mounting Panel 101 Panel through hole 105,106 Stud bolt 110,111 Nut 120,121 Colored parts 120A, 121A Collar side cylindrical part 120B,121B Tsuba 120C, 121C Color through hole WH Wire Harness W Routing material Wh braided conductor

Claims

[Claim 1] At least one cable routing material; A grommet into which the wiring material is inserted, and a portion of which is inserted into a panel through-hole formed in the mounting panel, and which closes the gap between the wiring material and the mounting panel to seal off water between the wiring material and the mounting panel; a bracket having electrical conductivity, into which a portion of the grommet is inserted, and which is attached to the mounting panel via the grommet; a braided conductor that is electrically conductive, covers the outer peripheral surface of the wiring material that is located on one side of the mounting panel in the extension direction of the wiring material, and is electrically connected to the bracket; The grommet is a grommet-side cylindrical portion into which the wiring material is inserted; a grommet-side annular portion having at least a pair of first fastening through holes and facing the mounting panel in the extension direction when the grommet-side cylindrical portion is inserted into the panel through hole, The bracket is a bracket-side annular portion that faces the mounting panel in the extending direction with the grommet-side annular portion interposed therebetween in an attached state in which the bracket is attached to the mounting panel via the grommet; a collar member that is electrically conductive and is inserted into the first fastening through hole and the second fastening through hole in the attached state; a fastening member that is inserted into a collar through-hole formed in the collar member and fastens the bracket to the mounting panel in the mounted state, The second fastening through hole is a through-hole extending from the front surface to the rear surface of the bracket-side annular portion; The collar member is a collar side cylindrical portion having the collar through hole; a flange portion protruding from an outer peripheral surface of the collar side cylindrical portion in a direction perpendicular to the extending direction, In a fastened state in which the mounting panel and the bracket are fastened by the fastening member, the collar-side tubular portion is inserted into the first fastening through-hole and the second fastening through-hole, and the flange portion faces and contacts the bracket-side annular portion in the extension direction, One end of the collar-side cylindrical portion in the extending direction abuts against the mounting panel, electrically connecting the bracket and the mounting panel. A wire harness characterized by:

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