JP2023169975A - wire harness - Google Patents

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

The present invention relates to a wire harness.

When installing high-voltage shielded wiring material (hereinafter simply referred to as "routing material") under the floor of the vehicle in a vehicle such as an electric vehicle, the wiring material may be placed outside the vehicle as necessary. The cable is inserted into a panel through-hole formed in a mounting panel that separates the room from the room (for example, see Patent Document 1). In this case, for example, a grommet with a sheet metal having a body ground structure and a water stop function may be assembled into the panel through hole.

Conventionally, when assembling a grommet with sheet metal with wiring material inserted into a panel through-hole, a braided conductor covering the wiring material is electrically connected to the mounting panel via a conductive bracket that constitutes the grommet with sheet metal. This grounds the braided conductor. In this case, in order to stabilize the electrical connection between the bracket and the mounting panel when the grommet with sheet metal is attached to the mounting panel, the bolt through hole provided in the bracket is extended by drawing process. There is.

Japanese Patent Application Publication No. 2005-192279

However, if the bolt through hole is drawn to ensure the contact area between the bracket and the mounting panel, it is necessary to secure space around the bolt through hole to ensure strength, and due to restrictions due to the vehicle shape etc. There is a problem in that the degree of freedom in design is restricted due to size restrictions.

The present invention provides a wire harness that is capable of water stopping between electric wires and grounding of a braided conductor, and that can improve the degree of freedom in designing a through hole for fixing a bracket to a mounting panel using a fastening member. The purpose is to

In order to achieve the above object, a wire harness according to the present invention includes at least one wiring material, and a part of the wiring material is inserted into a panel through-hole formed in a mounting panel. a grommet that closes the space between the wiring material and the mounting panel to stop water between the wiring material and the mounting panel; and a grommet that is electrically conductive, and a part of the grommet is inserted; a bracket that is attached to the mounting panel via the grommet; and a conductive outer periphery that is located on one side of the outer peripheral surface of the wiring material relative to the mounting panel in the extending direction of the wiring material. a braided conductor that covers a surface and is electrically connected to the bracket, and the grommet has a grommet side cylindrical portion into which the wiring material is inserted, and at least one pair of first fastening through holes. and an annular grommet-side annular portion that faces the mounting panel in the extending direction when the grommet-side cylindrical portion is inserted into the panel through-hole, at least one pair of second fastening through holes corresponding to the first fastening through holes, and the grommet-side annular shape with respect to the mounting panel in an attached state in which the bracket is attached to the mounting panel via the grommet. a collar member having a bracket-side annular portion facing in the extending direction with a portion therebetween, having conductivity, and being inserted into the first fastening through hole and the second fastening through hole in the attached state; and 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, and the second fastening through-hole is connected to the bracket. The collar member penetrates from the front surface to the back surface of the side annular portion, and the collar member extends from the collar side cylindrical portion having the collar through hole and the outer peripheral surface of the collar side cylindrical portion in a direction perpendicular to the extending direction. a protruding flange portion, and in a fastened state in which the mounting panel and the bracket are fastened together by the fastening member, the collar side cylindrical portion is connected to the first fastening through hole and the second fastening through hole. inserted into the hole, the collar portion faces and contacts the bracket-side annular portion in the extending direction, and one end of the collar-side cylindrical portion in the extending direction abuts the mounting panel. The bracket and the mounting panel are electrically connected to each other.

According to the wire harness according to the present invention, water can be stopped between the electric wires and the braided conductor can be grounded, and the degree of freedom in designing the through hole for fixing the bracket to the mounting panel using the fastening member can be improved. It has the effect of saying that it can be done.

FIG. 1 is a perspective view of the main parts of the wire harness according to the embodiment. FIG. 2 is an exploded perspective view of the main parts of the wire harness according to the embodiment. FIG. 3 is an exploded perspective view of the main parts of the wire harness according to the embodiment. FIG. 4 is a sectional view of main parts of the wire harness according to the embodiment. FIG. 5 is a partially enlarged sectional view of the main parts of the wire harness according to the embodiment.

Embodiments according to the present invention will be described in detail below 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 can be easily imagined by a person skilled in the art, or those that are substantially the same, and various omissions, substitutions, and changes may be made without departing from the gist of the invention. It can be carried out.

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

The mounting panel 100 is, for example, a single electrically conductive metal plate that constitutes the body of a vehicle. As shown in FIGS. 2 and 3, the mounting panel 100 has an outdoor side surface 102 facing outdoors, an indoor side surface 103 facing indoors, and a panel through hole 101 penetrating from the outdoor side surface 102 to the indoor side surface 103. . The panel through-hole 101 is burred and has a burred portion 101a formed to protrude from the outdoor side surface 102 side to the indoor side surface 103 side.

The mounting panel 100 has a pair of stud bolts 105 and 106 that protrude from the outdoor side surface 102, as shown in FIGS. 1 to 4. The pair of stud bolts 105 and 106 are an example of fastening members, and are provided at opposing positions with the panel through hole 101 in between. Nuts 110 and 111, which are other examples of fastening members, are screwed into the stud bolts 105 and 106. A grommet unit 1 having a body ground structure and a water stop function is assembled into the panel through hole 101.

Grommet unit 1 is attached to panel through-hole 101 with wiring material W inserted into panel through-hole 101, stud bolts 105 and 106 are inserted into collar members 120 and 121, and nuts are attached to stud bolts 105 and 106. By screwing 110 and 111 together, it is fixed to the outdoor side surface 102 of the mounting panel 100.

In addition, in the following description, the illustrated X direction is the extending direction of the wire harness WH in this embodiment. The Y direction is a first direction perpendicular to the extending direction of the wire harness WH in this embodiment. The Z direction is a second direction perpendicular to the first direction and the extending direction of the wire harness WH in this embodiment. The second direction is, for example, the arrangement direction of the two wiring members W in the wire harness WH. It is assumed that the X direction, Y direction, and Z direction are orthogonal 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 direction in which the mounting panel 100 extends.

The extending direction in this embodiment corresponds to the 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, in order to make the explanation easier to understand, the explanation will be made assuming that the two wiring members W are wired linearly along the extending direction, but the grommet unit 1 is not limited to this, and the grommet unit 1 is attached to the mounting panel. The two wiring members W inserted into the grommet unit 1 may be partially bent or curved so as to deviate from the extending direction while attached to the grommet unit 100. Moreover, each direction used in the following description is explained as a direction in a state where the grommet unit 1 is assembled into the panel through-hole 101 unless otherwise specified.

The wiring material W is composed of, for example, one electric wire. An electric wire has a conductor part (core wire) made of a plurality of conductive metal wires, and the outside thereof is covered with an insulating covering part. Here, the wiring material W is, for example, a thick electric wire used in a high voltage system.

The braided conductor Wh covers and shields the outer circumferential surface located on the outdoor side surface of the outer circumferential surface of the wiring material W in the extending direction. The braided conductor Wh is formed into a cylindrical shape by weaving a plurality of conductive braided wires into a mesh shape. One end in the extending direction of the braided conductor Wh is fixed to the grommet unit 1 by a shield ring SR, electrically connected to the grommet unit 1, and connected to the grommet unit 1 and the grounding member of the mounting panel 100. grounded through. Grommet unit 1 is electrically connected to braided conductor Wh. Note that in the braided conductor Wh shown in FIGS. 1 and 4, the mesh shape in the braided conductor Wh is omitted for convenience of illustration.

The grommet unit 1 is assembled into the panel through-hole 101 with the wiring material W of the wire harness WH inserted and wrapped around the wiring material W, thereby electrically connecting the braided conductor Wh to the mounting panel 100. This is to connect and ground the panel through hole 101 and to make it waterproof. The grommet unit 1 has functions such as protecting the wiring material W passing through the panel through-hole 101 and waterproofing the panel through-hole 101, as well as dustproofing and sound insulation. The grommet unit 1 includes a grommet 10 and a bracket 30.

In the grommet 10, two wiring materials W are inserted, a part of which is inserted into a panel through hole 101 formed in the mounting panel 100, and the grommet 10 closes the space between the wiring materials W and the mounting panel 100. This is to stop water between the wiring material W and the mounting panel 100. The grommet 10 is attached to the mounting panel 100 in an inserted state in which a portion thereof is inserted into the panel through-hole 101. The grommet 10 is formed of an insulating elastic resin material (eg, ethylene-propylene-diene rubber (EPDM)) having low rigidity and high flexibility, such as rubber or thermoplastic elastomer. As shown in FIGS. 2 to 4, the grommet 10 includes a grommet side cylindrical portion 11 and a grommet side annular portion 12, which are integrally formed as an elastic body.

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

The cylindrical main body part 13 is a part that is inserted into the panel through-hole 101 and assembled into the panel through-hole 101, as shown in FIGS. 2 and 3. The cylindrical main body portion 13 is formed in a cylindrical shape to match the shape of the panel through-hole 101 (burred portion 101a), and has a circular shape when viewed from the indoor side in the extending direction.

The cylindrical portion 14A is a portion that is open at both ends in the extending direction of the cylindrical portion 14A, and into which the wiring material W is inserted. The cylindrical portion 14A is provided integrally with the connecting portion 14B, and is connected to the cylindrical main body portion 13 via the connecting portion 14B. One or more cylindrical portions 14A are formed according to the number of wiring materials W to be inserted. With the wiring material W inserted inside, the cylindrical portion 14A comes into close contact with the outer peripheral surface of the wiring material W on the outdoor side by elastic deformation, and covers the entire outer peripheral surface of the wiring material W. Configured to seal.

The connecting portion 14B is provided so as to surround the cylindrical portion 14A, and is formed 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 extending direction, the first direction, and the second direction.

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

The grommet side annular portion 12 has four grommet fixing portions 19 that protrude from the grommet surface 15 toward the outdoor side in the extending direction and have a substantially cylindrical shape. The grommet surface 15 constitutes a flat surface along a direction perpendicular to the extending direction, and faces the bracket 30 in the extending direction in a first attachment state in which the bracket 30 is attached to the grommet 10. When the four grommet fixing portions 19 are viewed from a direction perpendicular to the extending direction, the indoor end portions of the four grommet fixing portions 19 in the extending direction are bulged more radially outward than the other portions. Of the four grommet fixing parts 19, two are arranged on one side in the first direction across the two cylindrical parts 14A, and the remaining two are arranged on the other side in the first direction. Among the four grommet fixing parts 19, two arranged on one side in the first direction and two arranged on the other side in the first direction are arranged along the arrangement direction of the two wiring materials W. Arranged.

The grommet side annular portion 12 has a pair of first fastening through holes 17 and 18 that penetrate in the extending direction. The pair of first fastening through holes 17 and 18 both penetrate 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. The pair of first fastening through holes 17 and 18 both have a circular shape when viewed from the extending direction. The pair of first fastening through holes 17 and 18 are provided at positions that are outside the grommet fixing part 19 and face each other in the first direction with the connecting part 14B in between. The pair of first fastening through holes 17 and 18 are provided corresponding to the pair of stud bolts 105 and 106 of the mounting panel 100, and the bracket 30 is attached to the mounting panel 100 via the grommet 10 in a second mounting state. , 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. The first fastening through holes 17 and 18 are inserted into the stud bolts 105 and 106 and the collar members 120 and 121 in the second attached state.

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 is open at both ends in the extending direction, and the wiring material W is inserted into the bracket 30 . Bracket 30 is supported by mounting panel 100 via grommet 10. The bracket 30 is made of a conductive metal material or the like. As shown in FIGS. 2 to 4, the bracket 30 includes a bracket-side cylindrical portion 31 and a bracket-side annular portion 32.

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 stop protrusion 10a is formed to protrude from the outer peripheral end of the grommet side annular portion 12 toward the grommet back surface 16 side. FIG. 4 shows a state before the nuts 110, 111 are screwed onto the stud bolts 105, 106. FIG. 5 shows a fastened state in which the mounting panel 100 and the bracket 30 are fastened together by screwing the nuts 110 (and nuts 111) onto the stud bolts 105 (and stud bolts 106). The water stop protrusion 10a is elastically deformed in the above-mentioned fastened state and comes into close contact with the outdoor side surface 102 together with the grommet back surface 16. As shown in FIGS. 3 and 4, the annular water stop protrusion 10b is arranged in an annular shape so as to surround each of the first fastening through holes 17 and 18 when viewed from the indoor side in the extending direction. The annular water stop protrusion 10b is formed to protrude toward the indoor side from the grommet back surface 16 when viewed from a direction perpendicular to the extending direction. The annular water stop protrusion 10b is elastically deformed in the above-mentioned fastened state, and comes into close contact with the outdoor side surface 102 together with the grommet back surface 16.

As shown in FIGS. 2 and 3, the bracket side cylindrical portion 31 is a portion that is open at both ends in the extending direction and into which the wiring material W is inserted. The bracket side cylindrical portion 31 has a first opening 33 on one side in the extending direction and a second opening 34 on the other side, and is arranged from either the first opening 33 or the second opening 34 to the other. The rope material W is inserted. The first opening 33 and the second opening 34 both have an oval shape when viewed from the extending direction. A portion of the grommet 10 is inserted into the bracket side cylindrical portion 31 in the first attached state. Specifically, in the first attached state, the bracket side cylindrical portion 31 has two cylindrical portions 14A and a portion of the connecting portion 14B inserted inside. The bracket side cylindrical portion 31 has an elliptical shape having a major axis and a minor axis when viewed from the extending direction, and two wiring members W are arranged along the major axis direction. The bracket side cylindrical part 31 is provided with a bracket side annular part 32 at the end on the indoor side in the extending direction.

The bracket-side annular portion 32 is a portion formed in an annular shape and protrudes from the second opening 34 at the end portion on the outdoor side in the extending direction of the bracket-side cylindrical portion 31 in a direction perpendicular to the extending direction. The bracket-side annular portion 32 extends from the bracket-side cylindrical portion 31 in a direction perpendicular to the extending direction. The bracket side annular portion 32 has substantially the same shape as the grommet side annular portion 12 when viewed from the extending direction.

The bracket side annular portion 32 has four through holes 39 passing through in the extending direction. The four through holes 39 all penetrate from the bracket surface 35 of the bracket side annular portion 32 to the bracket back surface 36 on the opposite side of the bracket surface 35. The bracket surface 35 constitutes a flat surface along a direction perpendicular to the extending direction, and faces the grommet surface 15 in the extending direction in the first attached state. The four through holes 39 are provided corresponding to the four grommet fixing parts 19, and the corresponding grommet fixing parts 19 are inserted into each of the through holes 39 in the first attachment state. All four through holes 39 have a circular shape when viewed from the extending direction. The bracket 30 is fixed to the grommet 10 with the four grommet fixing parts 19 completely inserted into the four through holes 39. Here, the state in which the grommet fixing portion 19 is completely inserted into the through hole 39 means the state in which the bracket back surface 36 and the grommet surface 15 are in contact with each other.

The bracket side annular portion 32 has a pair of second fastening through holes 37 and 38 that penetrate in the extending direction. The pair of second fastening through holes 37 and 38 both penetrate from the bracket surface 35 of the bracket side annular portion 32 to the bracket back surface 36. The pair of second fastening through holes 37 and 38 both have a circular shape when viewed from the extending direction. The pair of second fastening through holes 37 and 38 are provided at positions that are outside the through hole 39 and face each other in the first direction with the bracket side cylindrical portion 31 in between. The pair of second fastening through holes 37 and 38 are provided corresponding to the pair of stud bolts 105 and 106 of the mounting panel 100, and the stud bolt 105 is inserted into the second fastening through hole 37 in the second mounting state. and the stud bolt 106 is inserted into the second fastening through hole 38. The second fastening through holes 37 and 38 allow stud bolts 105 and 106 of the mounting panel 100 and collar members 120 and 121 to be inserted in the second mounting state in which the bracket 30 is mounted to the mounting panel 100 via the grommet 10. inserted. That is, the stud bolts 105, 106 and the collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38 in the second mounting state.

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

The collar members 120, 121 are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38 in the second attached state, and are inserted into the stud bolts 105, 106, and are inserted into the grommet 10 and the bracket. By being interposed between the grommet 30 and the stud bolts 105 and 106, it functions as a spacer for the grommet 10 and the bracket 30. The collar members 120 and 121 are made of a metal material or the like that has conductivity and is more difficult to deform under load than the grommet 10 and the bracket 30. The collar member 120 and the collar member 121 have the same shape, 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 37. It is inserted into the second fastening through hole 38. The collar member 120 has a collar side cylindrical portion 120A and a collar portion 120B. The collar member 121 has a collar side cylindrical portion 121A and a collar portion 121B.

The collar-side cylindrical portions 120A, 121A are open at both ends in the extending direction of the collar-side cylindrical portions 120A, 121A, and are portions into which stud bolts 105, 106 are inserted. The collar side cylindrical portions 120A, 121A have collar through holes 120C, 121C into which stud bolts 105, 106 are inserted. The collar through holes 120C and 121C have a circular shape when viewed from the extending direction. The outer diameters of the collar-side cylindrical 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. When the collar-side cylindrical parts 120A and 121A are in the above-mentioned fastened state, as shown in FIG. comes into contact with.

The collar portions 120B, 121B are portions that protrude from the outer peripheral surfaces of the collar side cylindrical portions 120A, 121A in a direction perpendicular to the extending direction. The collar portions 120B, 121B are formed at one end of the collar side cylindrical portions 120A, 121A. The flanges 120B and 121B have a circular shape when viewed from the extending direction. The collar portions 120B, 121B contact the bracket surface 35 in the extending 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. (Figure 4). In the fastened state, the flanges 120B, 121B contact the bracket surface 35 on one indoor side in the extending direction, and contact the nuts 110, 111 on the other outdoor side.

When the collar members 120, 121 are in a fastened state in which the nuts 110, 111 are screwed into the stud bolts 105, 106 and the mounting panel 100 and the bracket 30 are fastened, the collar side cylindrical parts 120A, 121A are used for the first fastening. The collar portions 120B, 121B) are inserted into the through holes 17, 18 and the second fastening through holes 37, 38, and the collar portions 120B, 121B) face and contact the bracket side annular portion 32, and the collar side cylindrical portions 120A, 121A extend. One end of the bracket 30 and the mounting panel 100 are electrically connected to each other by contacting the mounting panel 100 . The inner diameters of the first fastening through holes 17 and 18 are smaller than the inner diameters of the second fastening through holes 37 and 38. Therefore, in a state where 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 part of the outer peripheral surface of the collar side cylindrical parts 120A, 121A is It is pressed radially inward by the inner circumferential surface forming the first fastening through holes 17 and 18.

As shown in FIGS. 1 and 4, the shield ring SR fixes the end of the braided conductor Wh on the outdoor surface side to the bracket 30, and electrically connects the braided conductor Wh and the bracket 30. The shield ring SR is made of a conductive metal material or the like, and is formed into an annular shape. The shield ring SR is fixed to the bracket 30 with the end of the outdoor surface of the braided conductor Wh sandwiched between the outer circumferential surface of the bracket-side cylindrical portion 31.

Next, an installation procedure that is a method of installing the wire harness WH using the grommet unit 1 will be described. It is assumed that the wire harness WH is inserted into the panel through-hole 101 and the grommet unit 1 is on the outdoor side. Further, in the grommet unit 1, the grommet 10 and the bracket 30 are in the first attached state.

First, while inserting the grommet unit 1 into the panel through-hole 101 from the outdoor side of the mounting panel 100, insert the stud bolts 105, 106 into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38. do. In this case, while inserting the cylindrical main body part 13 of the grommet 10 into the panel through-hole 101, the grommet side annular part 12 faces the outdoor side surface 102 in the extending direction, and a part of the cylindrical main body part 13 faces the indoor side surface. The grommet unit 1 is fitted into the panel through-hole 101 so as to be positioned outward from the grommet unit 103.

Next, after inserting the stud bolts 105, 106 into the collar through holes 120C, 121C of the collar members 120, 121, the nuts 110, 111 are screwed onto the stud bolts 105, 106. Then, the grommet unit 1 is fixed to the mounting panel 100 by tightening the nuts 110 and 111 using a tightening tool such as an impact wrench, an air driver, or a nut runner.

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, while fitting the grommet unit 1 into the panel through-hole 101, the stud bolts 105, 106 are inserted into the first fastening through-holes 17, 18 and the second fastening through-holes 37, 38. insert. After inserting the stud bolts 105 and 106 into the collar members 120 and 121, the bracket 30 and the mounting panel 100 are brought into a fastened state. As a result, as shown in FIG. 5, the collar-side cylindrical portions 120A and 121A come into contact with the outdoor side surface 102, and the collar portions 120B and 121B come into contact with the bracket surface 35, thereby creating a gap between the bracket 30 and the mounting panel 100. electrically connected. Furthermore, 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 the fastened state. In other words, when the collar-side cylindrical parts 120A, 121A are in the fastened state, the collar-side cylindrical parts 120A, 121A are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, and The collar portions 120B and 121B face and contact the bracket-side annular portion 32 in the extending direction, and one end of the collar-side cylindrical portions 120A and 121A in the extending direction abuts against the mounting panel 100 to close the bracket 30. and the mounting panel 100 are electrically connected. As a result, the braided conductor Wh can be grounded to the mounting panel 100.

As described above, the wire harness WH according to the present embodiment includes the grommet 10, which is partially inserted into the panel through-hole 101 and which stops water between the wiring material W and the mounting panel 100, and the grommet 10, which has conductivity. and a bracket 30 that 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 has second fastening through holes 37, 38. 38 penetrates from the bracket surface 35 to the bracket back surface 36. When the collar side cylindrical parts 120A, 121A are in the above-mentioned fastened state, the collar side cylindrical parts 120A, 121A are inserted into the first fastening through holes 17, 18 and the second fastening through holes 37, 38, and the collar part 120B , 121B face and contact the bracket-side annular portion 32 in the extending direction, and one end of the collar-side cylindrical portions 120A, 121A in the extending direction abuts the mounting panel 100, so that the bracket 30 and the mounting panel 100 are electrically connected.

With the above configuration, the contact area between the bracket 30 and the mounting panel 100 can be secured by using the collar members 120 and 121, and the drawing process for the second fastening through holes 37 and 38, which are bolt through holes, can be secured. Since this is not necessary, there is no need to secure space around the second fastening through holes 37, 38 compared to when drawing is performed, and the degree of freedom in designing the second fastening through holes 37, 38 is improved. can be done. Specifically, the positions of the second fastening through holes 37 and 38 can be brought close to the annular peripheral wall portion 32a to the extent that the collar portions 120B and 121B are not located outside of the outer peripheral end of the bracket side annular portion 32. becomes. Moreover, since drawing processing for the second fastening through holes 37 and 38 is not necessary, processing costs can be suppressed. Moreover, since the grommet 10 shuts off water between the wiring material W and the mounting panel 100, water can be stopped between the wiring materials W. Furthermore, in the above-described fastened state, the bracket 30 and the mounting panel 100 are electrically connected, so that the braided conductor Wh can be grounded to the mounting panel 100. In this way, water can be stopped between the wiring members W and the braided conductor Wh can be grounded, and the degree of freedom in designing the second fastening through holes 37 and 38 can be improved.

Note that the wire harness WH according to the embodiment of the present invention described above and the method of attaching the wire harness WH are not limited to the embodiment described above, and various changes can be made within the scope of the claims. be. Further, the wire harness WH according to the present embodiment may be configured by appropriately combining the components of the embodiment and the modified example described above. Further, the wire harness WH may include various components such as a corrugated tube, a resin tape, an exterior member such as a protector, an electrical connection box, and a fixture.

Further, in the above embodiment, the wiring material W was described as being constituted by a thick electric wire used in a high voltage system, but the wiring material W is not limited to this, and may be constituted by a metal rod, a bundle of electric wires, or the like. A metal rod is a rod-shaped member that is electrically conductive and covered on the outside with an insulating coating. A wire bundle is a bundle of wires.

Further, in the above embodiment, the number of wiring members W is two, but it may be one, or three or more.

1 Grommet unit 10 Grommet 11 Grommet side cylindrical part 12 Grommet side annular part 17, 18 First fastening through hole 30 Bracket 31 Bracket side cylindrical part 32 Bracket side annular part 35 Bracket surface 36 Bracket back surface 37, 38 Second fastening Through hole 100 Mounting panel 101 Panel through hole 105, 106 Stud bolt 110, 111 Nut 120, 121 Collar member 120A, 121A Collar side cylindrical part 120B, 121B Flange part 120C, 121C Collar through hole WH Wire harness W Routing material Wh Braided conductor

Claims (1)

at least one wiring material;
The wiring material is inserted, and a portion thereof is inserted into a panel through-hole formed in the mounting panel, and the space between the wiring material and the mounting panel is closed and the wiring material and the mounting panel are closed. A grommet that stops water between the
a bracket that is electrically conductive, into which a portion of the grommet is inserted, and which is attached to the mounting panel via the grommet;
It has conductivity, covers an outer peripheral surface of the wiring material located on one side of the mounting panel in the extending direction of the wiring material, and is electrically connected to the bracket. a braided conductor;
The grommet is
a grommet side cylindrical portion into which the wiring material is inserted;
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 cylindrical portion is inserted into the panel through-hole; , has
The bracket is
at least one pair of second fastening through holes corresponding to the first fastening through holes, and the grommet side with respect to the mounting panel in an installed state in which the bracket is attached to the mounting panel via the grommet. a bracket-side annular portion facing in the extending direction with the annular portion interposed therebetween;
a collar member that has conductivity and is inserted into the first fastening through hole and the second fastening through hole in the attached state;
further comprising 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
It penetrates from the front surface to the back surface of the bracket side annular part,
The collar member is
a collar side cylindrical portion having the collar through hole;
a flange protruding from the outer circumferential surface of the collar-side cylindrical part in a direction perpendicular to the extending direction;
In the fastened state in which the mounting panel and the bracket are fastened together by the fastening member, the collar side cylindrical part is inserted into the first fastening through hole and the second fastening through hole, and the collar part is inserted into the first fastening through hole and the second fastening through hole. facing and contacting the bracket-side annular portion in the extending direction;
One end in the extending direction of the collar-side cylindrical portion abuts the mounting panel to electrically connect the bracket and the mounting panel;
A wire harness characterized by:

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