Wire harness

Abstract

A wire harness (1) comprises an electric wire (2), a grommet (5), a water shut-off valve (23), a shield material (24), a first close contact layer (25), and a second close contact layer (26). The grommet (5) is attached to, for example, a vehicle body and houses the electric wire (2) inside. The water shut-off valve (23) is provided to shut off water inside the grommet (5) and attached by allowing the electric wire (2) to pass therethrough. The shield material (24) is attached around the water shut-off valve (23). The first close contact layer (25) is attached to the outer circumference of the shield material (24), thereby causing the shield material (24) to closely contact with the water shut-off valve (23). The second close contact layer (26) is attached to the outer circumference of the first close contact layer (25), thereby causing the first close contact layer (25) to closely contact with the shield material (24).

Description

Wire harness

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

[0002] As disclosed in Patent Document 1, a wire harness having an outer conductor for shielding electromagnetic waves is well known. The outer conductor has, for example, a substantially cylindrical conductor tube made of aluminum. Aluminum conductor tubes have high rigidity. Therefore, when the installation space is narrow, the conductor tube restricts the positioning, and it may be impossible to install the wire harness.

[0003] Therefore, Patent Document 2 discloses a wire harness using a braided shield. This wire harness has a water stop valve that fills the gap between the electric wire and the grommet. The braided shield is arranged to cover the outer periphery of the water stop valve. A water stop adhesive member is attached to the outer periphery of the braided shield. The braided shield is flexible. Therefore, when the installation space is narrow, the wire harness can be bent and installed. Therefore, by adopting the wire harness of Patent Document 2, it is possible to install the wire harness even in a narrow installation space.

[0004] JP 2015-53711 A JP 2016-119821 A

[0005] However, when a wire harness is bent, depending on the type of bending load, the adhesion between the stop valve and the braided shield, or the adhesion between the braided shield and the water-stopping adhesive member, may be reduced. In this case, a gap that did not exist originally may be generated by the bending, and fluids such as water may flow into the interior through this gap. Therefore, there is a need for improving the water-stopping properties of a bendable wire harness.

[0006] An object of the present disclosure is to provide a wire harness that can improve water blocking properties.

[0007] The wire harness that solves the above problem comprises an electric wire for transmitting electricity, a grommet that is attached to an opening through which the electric wire passes and that houses the electric wire inside, a stop valve that is provided to stop water from entering the inside of the grommet and through which the electric wire passes and is attached, a shielding material attached around the stop valve, a first adhesion layer that is attached to the outer periphery of the shielding material to adhere the shielding material to the stop valve, and a second adhesion layer that is attached to the outer periphery of the first adhesion layer to adhere the first adhesion layer to the shielding material.

[0008] The present disclosure can improve the watertightness of a wire harness.

[0009] Fig. 1 is a perspective view of a wire harness. Fig. 2 is a front view of the wire harness. Fig. 3 is an exploded perspective view of the wire harness. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 2. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 2. Figs. 6(a) to 6(d) are procedural diagrams showing the flow of manufacturing a wire harness. Fig. 7 is an operation diagram of a wire harness. Figs. 8(a) to 8(d) are procedural diagrams showing the flow of manufacturing a wire harness.

[0010] First, embodiments of the present disclosure will be described below. [1] A wire harness of the present disclosure includes an electric wire for transmitting electricity, a grommet attached to an opening through which the electric wire passes and accommodating the electric wire therein, a stop cock provided to stop water from entering the grommet and through which the electric wire passes, a shielding material attached to the periphery of the stop cock, a first adhesive layer attached to the outer periphery of the shielding material to tightly adhere the shielding material to the stop cock, and a second adhesive layer attached to the outer periphery of the first adhesive layer to tightly adhere the first adhesive layer to the shielding material.

[0011] According to this configuration, the first adhesive layer adheres the shielding material to the stop valve, and the second adhesive layer adheres the first adhesive layer to the shielding material. In this way, the two layers, the first adhesive layer and the second adhesive layer, adhere the components to each other, making it possible to reduce the occurrence of gaps between the components. Therefore, the watertightness of the bendable wire harness can be improved.

[0012] [2] In the above [1], the shielding material is a braided shield formed of wires, and the first adhesive layer is at least partially made of butyl rubber. With this configuration, the butyl rubber penetrates between the stitches of the braided shield, allowing the butyl rubber to firmly fit into the shielding material. This improves adhesion between the stop valve and the shielding material, further contributing to improved watertightness.

[0013] [3] In the above [2], the first adhesive layer is a sheet-like butyl-based rubber sheet that uses butyl-based rubber at least in part, and the butyl-based rubber sheet is wound around the electric wire multiple times while shifting its position along the axial direction of the electric wire and is attached to the braided shield by being pressed with a jig. With this configuration, the butyl-based rubber sheet can be attached around the braided shield by the simple process of wrapping the butyl-based rubber sheet around the braided shield. Furthermore, since the butyl-based rubber sheet is pressed with a jig after attachment, it is possible to firmly fit the butyl-based rubber sheet to the braided shield.

[0014] [4] In any one of the above [1] to [3], the second adhesive layer is a tape wound around the first adhesive layer multiple times while shifting the position along the axial direction of the electric wire. With this configuration, a simple operation of winding the tape around the first adhesive layer is sufficient.

[0015] [5] In any one of the above [1] to [4], the grommet has an annular seal portion on its inner surface that seals the gap between the grommet and the second adhesive layer, thereby improving the watertightness between the grommet and the second adhesive layer.

[0016] [6] In any one of the above [1] to [5], the stop valve has a hole through which the electric wire passes, and the hole has an annular seal on its inner surface that seals the gap between the electric wire and the stop valve. With this configuration, it is possible to improve the watertightness between the electric wire and the stop valve.

[0017] [7] In any one of the above [1] to [6], the grommet has a tubular portion that houses an assembly including the stop valve, the electric wire, the shielding material, the first adhesive layer, and the second adhesive layer, and a seat portion that supports a base end of the tubular portion. With this configuration, the wire harness can easily change shape by bending the tubular portion around the seat portion. Therefore, the wire harness can be easily bent.

[0018] [8] In any of the above items [1] to [7], the seat has a water-stopping wall formed around the entire edge. With this configuration, the wall blocks the intrusion of fluids such as water, further contributing to improving the water-stopping properties.

[0019] (Details of Embodiments of the Present Disclosure) Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In each drawing, for the convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional proportions of each part may differ from the actual ones.

[0020] (Overview of Wire Harness 1) As shown in FIG. 1 , the wire harness 1 includes electric wires 2 for transmitting electricity. The electric wires 2 are, for example, coated electric wires in which a linear core wire is covered with an insulating coating. The core wires may be, for example, either stranded wires or single-core wires. The single-core wires are, for example, columnar conductors with a solid interior structure or tubular conductors with a hollow interior structure. The core wires are made of, for example, copper-based or aluminum-based metal materials. The insulating coating covers, for example, the outer circumferential surface of the core wires over the entire circumferential direction. The insulating coating is made of, for example, an insulating resin material. The number of electric wires 2 is not limited to multiple, and may be one.

[0021] As shown in Figures 1 and 2, the wire harness 1 includes a grommet 5 that protects the electric wires 2 that are passed through an opening 4 (shown in Figure 2) of an attachment destination 3. The grommet 5 is attached to the opening 4 through which the electric wires 2 pass, and the electric wires 2 are housed inside. The grommet 5 has a tubular portion 6 through which the electric wires 2 pass, and a seat portion 8 that supports a base end 7 of the tubular portion 6. The grommet 5 is attached to the opening 4 via a bracket 9. The bracket 9 is fixed to the attachment destination 3 by, for example, a fastening portion 10. The fastening portion 10 is, for example, a bolt. The attachment destination 3 is, for example, the body of a vehicle.

[0022] The grommet 5 is disposed, for example, at a location separating the interior and exterior of the attachment point 3. In this example, the tubular portion 6 of the grommet 5 is disposed on the interior side, and the seat portion 8 is disposed on the exterior side. A recess 7a is provided at the base end 7 of the grommet 5 to facilitate bending of the grommet 5.

[0023] As shown in Figure 3, the seat portion 8 has a plate-shaped main body 13 that rests on the bracket 9, and a flange 14 provided on the back surface of the main body 13. The flange 14 is disposed on the back surface of the main body 13. The grommet 5 is attached to the attachment target 3 by engaging the flange 14 with the periphery of a hole 15 in the bracket 9. The bracket 9 has a plurality of positioning holes 17 for inserting pins 16 that protrude from the back surface of the seat portion 8 (main body 13). The bracket 9 has holes 18 at both ends for inserting the fastening portions 10.

[0024] 4 and 5 , an assembly 22 for waterproofing between an inner peripheral surface 21 of the grommet 5 and the electric wire 2 is housed inside the grommet 5. The assembly 22 includes, for example, a water stop valve 23, a shielding material 24, a first adhesive layer 25, and a second adhesive layer 26. In this example, the assembly 22 is housed in the tubular portion 6 of the grommet 5. The assembly 22 prevents fluids such as water from entering the grommet 5.

[0025] The stop valve 23 is provided to stop water from entering the inside of the grommet 5, and is attached so that the electric wire 2 passes through it. The stop valve 23 is, for example, a rubber stopper. The stop valve 23 has holes 27 through which the electric wire 2 passes. In this example, the holes 27 extend along the axial direction of the electric wire 2 (the Z-axis direction in FIG. 4 , etc.), and three holes 27 are formed. The multiple holes 27 are arranged at equal angular intervals around the axis P of the grommet 5 (see FIG. 4 ).

[0026] 5, the hole 27 has, on its inner surface, an annular seal portion 30 that seals the gap between the hole 27 and the electric wire 2. In this example, a plurality of seal portions 30 (three seal portions in this example) are provided at positions closer to the center in the axial direction (Z-axis direction in FIG. 5) of the electric wire 2. The seal portions 30 are, for example, lip-type seals that assume a sealing state by elastically deforming.

[0027] The shielding material 24 is attached around the stop valve 23. The shielding material 24 surrounds the stop valve 23. The shielding material 24 is, for example, a braided shield 32 formed from wires 31 (see FIG. 6 ). The wires 31 are, for example, metal wires. The shielding material 24 is, for example, flexible, and prevents electrical noise and crosstalk and improves strength against abrasion.

[0028] The first adhesive layer 25 is attached to the outer periphery of the shielding material 24, thereby adhering the shielding material 24 to the stopcock 23. The first adhesive layer 25 is made of, for example, at least a portion of butyl-based rubber. In this example, the first adhesive layer 25 is a sheet-like butyl-based rubber sheet 34 made of, at least a portion of butyl-based rubber. The butyl-based rubber sheet 34 is wound around the wire 2, for example, multiple times while shifting its position along the axial direction (Z-axis direction in FIG. 5 ) of the wire 2. After being wound around the wire 2, the butyl-based rubber sheet 34 is pressurized to conform to the braided shield 32.

[0029] The second adhesive layer 26 is attached to the outer periphery of the first adhesive layer 25, thereby adhering the first adhesive layer 25 to the shielding material 24. The second adhesive layer 26 is, for example, a tape 35 wound around the electric wire 2 in multiple turns while shifting its position along the axial direction (Z-axis direction in FIG. 5 ) of the electric wire 2. The tape 35 preferably has high flexibility, high insulating properties, heat resistance, and cold resistance. The tape 35 is, for example, a vinyl tape.

[0030] (Other Water-Stopping Structures) As shown in Fig. 5 , the grommet 5 has, on its inner surface, an annular sealing portion 38 that seals the gap between the grommet 5 and the second adhesive layer 26. In this example, a plurality of sealing portions 38 (three sealing portions in this example) are formed at equal intervals along the axial direction of the electric wire 2 (the Z-axis direction in Fig. 5 ). The sealing portion 38 is, for example, a protrusion that protrudes a predetermined amount from the inner surface of the grommet 5. The sealing portion 38 is, for example, a lip-type seal that assumes a sealed state by elastic deformation.

[0031] 1 to 3 and 5, the seat 8 has a water-stopping wall 39 formed around the entire edge. The wall 39 is formed in a shape that protrudes obliquely from the body 13 of the seat 8. The wall 39 prevents fluids such as water from entering the upper surface (surface) of the seat 8 from the periphery.

[0032] Next, the operation of the wire harness 1 of this embodiment will be described. (Assembly of the wire harness 1) As shown in Fig. 6(a), a shielding material 24 (a braided shield 32 in this example) is attached around the stop valve 23 with the electric wires 2 attached to the hole 27. The shielding material 24 is attached so as to cover both the electric wires 2 and the stop valve 23. In other words, the shielding material 24 is attached to both the stop valve 23 and the electric wires 2 near the stop valve 23.

[0033] As shown in Fig. 6(b) , after the shielding material 24 is attached, the first adhesive layer 25 is attached around the shielding material 24. When the first adhesive layer 25 is a butyl-based rubber sheet 34, the butyl-based rubber sheet 34 is wrapped around the shielding material 24 multiple times. Specifically, the butyl-based rubber sheet 34 is wrapped around the shielding material 24 multiple times while shifting its position along the axial direction of the wire 2 (the direction of arrow A1 in Fig. 6(b) ) so that it overlaps (e.g., half-laps) with the butyl-based rubber sheet 34 on the adjacent circumference by a predetermined amount.

[0034] 6( c), after the butyl-based rubber sheet 34 is wrapped around the shield 24, it is pressed by a jig 41. Specifically, the butyl-based rubber sheet 34 is pressed against the braided shield 32 by rolling it with a roller 42 serving as the jig 41. As a result, when the shielding material 24 is the braided shield 32, the butyl-based rubber sheet 34 enters into the gaps between the stitches of the braided shield 32, and the butyl-based rubber sheet 34 fits well with the braided shield 32.

[0035] As shown in Figure 6(d) , after the butyl-based rubber sheet 34 is pressed, the second adhesive layer 26 is attached around the first adhesive layer 25. If the second adhesive layer 26 is tape 35, the tape 35 is wrapped around the first adhesive layer 25 multiple times. Specifically, the tape 35 is wrapped around the first adhesive layer 25 multiple times while shifting its position along the axial direction of the wire 2 (the direction of arrow A2 in Figure 6(d) ) so that each tape 35 overlaps the adjacent tape 35 by a predetermined amount (e.g., half-wraps). The tape 35 is preferably attached so as to cover the entire shielding material 24. As described above, the assembly 22 is assembled.

[0036] 5 , after assembly 22 is assembled, this assembly 22 is inserted into grommet 5. In this example, assembly 22 is inserted into grommet 5 so that second adhesive layer 26 contacts seal portion 38 inside grommet 5. Furthermore, assembly 22 is placed in tubular portion 6 of grommet 5.

[0037] (Advantages of the Wire Harness 1 of the Present Example) As shown in FIG. 7 , the mounting space for the wire harness 1 may be small. Here, an example is given in which the mounting space is low in height. In this example, the use of a flexible shielding material 24 allows the wire harness 1 to be bent and arranged. Furthermore, the first adhesive layer 25 and the second adhesive layer 26 are also bendable, which facilitates bending of the wire harness 1. In this way, the wire harness 1 can be given flexibility in its posture (inclination), so that the wire harness 1 can be routed even in a small mounting space.

[0038] The shielding material 24 is tightly adhered to the stop valve 23 by wrapping the first adhesive layer 25 around it. That is, the first adhesive layer 25 is wrapped around the outer periphery of the shielding material 24 to prevent a gap from occurring between the shielding material 24 and the stop valve 23. This improves the watertightness between the stop valve 23 and the shielding material 24.

[0039] Furthermore, a butyl-based rubber sheet 34 is used as the first adhesive layer 25, and the butyl-based rubber sheet 34 is wrapped around the shielding material 24 and then pressurized with a jig 41. Therefore, when the shielding material 24 is a braided shield 32, the butyl-based rubber sheet 34 enters the meshes of the braided shield 32 by pressurization, making it possible for the butyl-based rubber sheet 34 to conform to the braided shield 32. This also contributes to firmly fixing the shielding material 24 to the stop valve 23.

[0040] The first adhesive layer 25 is tightly adhered to the shielding material 24 by having the second adhesive layer 26 wrapped around it. That is, the second adhesive layer 26 is wrapped around the outer periphery of the first adhesive layer 25 to prevent a gap from occurring between the shielding material 24 and the first adhesive layer 25. This further improves the watertightness between the shielding material 24 and the first adhesive layer 25.

[0041] However, because the butyl-based rubber sheet 34 is adhesive, it can stick to the worker's hands or other parts of the body. However, in this example, the butyl-based rubber sheet 34 is covered with the second adhesive layer 26, so the butyl-based rubber sheet 34 is not exposed on the surface. This makes it less likely that the butyl-based rubber sheet 34 will stick to the worker's hands or other parts of the body. This also makes it easier to handle.

[0042] (Effects of the embodiment) The wire harness 1 of the above embodiment can achieve the following effects. (1) The wire harness 1 includes the electric wires 2, the grommet 5, the stop valve 23, the shielding material 24, the first adhesive layer 25, and the second adhesive layer 26. The electric wires 2 transmit electricity. The grommet 5 is attached to the opening 4 through which the electric wires 2 pass, and houses the electric wires 2 therein. The stop valve 23 is provided to stop water from entering the inside of the grommet 5, and the electric wires 2 pass through and are attached. The shielding material 24 is attached around the stop valve 23. The first adhesive layer 25 is attached to the outer periphery of the shielding material 24, thereby adhering the shielding material 24 to the stop valve 23. The second adhesive layer 26 is attached to the outer periphery of the first adhesive layer 25, thereby adhering the first adhesive layer 25 to the shielding material 24.

[0043] According to this example, the first adhesive layer 25 adheres the shielding material 24 to the stopcock 23, and the second adhesive layer 26 adheres the first adhesive layer 25 to the shielding material 24. In this way, the two layers, the first adhesive layer 25 and the second adhesive layer 26, adhere the members to each other, making it possible to prevent gaps from occurring between the members. Therefore, the watertightness of the bendable wire harness 1 can be improved.

[0044] (2) The shielding material 24 is a braided shield 32 formed from wires 31. Butyl rubber is used in at least a portion of the first adhesive layer 25. With this configuration, the butyl rubber penetrates between the stitches of the braided shield 32, and the butyl rubber adheres firmly to the shielding material 24. This increases the adhesion between the stop valve 23 and the shielding material 24, further contributing to improved watertightness.

[0045] (3) The first adhesive layer 25 is a sheet-like butyl-based rubber sheet 34 that uses butyl-based rubber for at least a portion thereof. The butyl-based rubber sheet 34 is wound around the electric wire 2 multiple times while shifting its position along the axial direction, and is attached so as to be in close contact with the braided shield 32 by being pressed by a jig 41. With this configuration, the butyl-based rubber sheet 34 can be attached around the braided shield 32 by the simple operation of wrapping the butyl-based rubber sheet 34 around the braided shield 32. Furthermore, since the butyl-based rubber sheet 34 is pressed by the jig 41 after being attached, the butyl-based rubber sheet 34 can be firmly fitted to the braided shield 32.

[0046] (4) The second adhesive layer 26 is a tape 35 wound around the first adhesive layer 25 in multiple turns while shifting the position along the axial direction of the electric wire 2. According to this configuration, the tape 35 can be wound around the first adhesive layer 25 in a simple manner.

[0047] (5) The grommet 5 has an annular seal portion 38 on its inner surface that seals the gap between the grommet 5 and the second adhesive layer 26. This configuration improves the watertightness between the grommet 5 and the second adhesive layer 26.

[0048] (6) The stop valve 23 has a hole 27 through which the electric wire 2 passes. The hole 27 has an annular seal portion 30 on its inner surface that seals the gap between the electric wire 2 and the stop valve 23. This configuration can improve the watertightness between the electric wire 2 and the stop valve 23.

[0049] (7) The grommet 5 has a tubular portion 6 that houses the assembly 22 therein and a seat portion 8 that supports a base end 7 of the tubular portion 6. The assembly 22 includes the electric wire 2, the stopcock 23, the shielding material 24, the first adhesive layer 25, and the second adhesive layer 26. With this configuration, the wire harness 1 can easily change its shape by bending the tubular portion 6 around the seat portion 8. This makes it possible to make the wire harness 1 easier to bend.

[0050] (8) The seat 8 has a water-stopping wall 39 formed around the entire edge. With this configuration, the wall 39 blocks the intrusion of fluids such as water, further contributing to improving the water-stopping performance. Note that this embodiment can be implemented with the following modifications. This embodiment and the following modifications can be implemented in combination with each other within the scope of technical compatibility.

[0051] The shielding material 24 is not limited to the braided shield 32, and may be, for example, a sheet or a tube capable of shielding electromagnetic waves. The method for fitting the first adhesive layer 25 to the shielding material 24 is not limited to the method of applying pressure with the roller 42, and may be, for example, a method of simply pressing the jig 41.

[0052] The first adhesive layer 25 is not limited to a sheet shape and may be, for example, cylindrical. The first adhesive layer 25 is not limited to a butyl-based rubber (butyl-based rubber sheet 34) and may be, for example, a material that is bendable and can press the shielding material 24 against the stop valve 23 by covering the periphery.

[0053] In the example shown in Figures 6(a) to 6(d), the first adhesive layer 25 is wound in a so-called half-wrap manner, but the first adhesive layer 25 may also be wound in a full-wrap manner. As shown in Figures 8(a) to 8(d), the first adhesive layer 25 may be wound around the shielding material 24 multiple times at the same position in the axial direction of the electric wire 2, i.e., without any shift in the axial direction of the electric wire 2. For example, without limitation, the dimension of the first adhesive layer 25 in the axial direction of the electric wire 2 (arrow A1) (sometimes referred to as the width of the first adhesive layer 25) may be substantially or completely equal to the entire length of the stop valve 23 in the axial direction of the electric wire 2 (arrow A1). When the first adhesive layer 25 is a butyl-based rubber sheet 34, a butyl-based rubber sheet stack may be formed around the stop valve 23 over the entire length of the stop valve 23, with multiple butyl-based rubber sheets 34 overlapping each other. A roll of multiple layers of the first adhesive layer 25 (a roll of multiple layers of butyl-based rubber sheet 34) having a length corresponding to or equal to the entire length of the stopcock 23 is advantageous in improving water-stopping properties, and can flexibly adapt to sealing performance requirements, for example, by adjusting the number of turns according to the sealing performance requirements.

[0054] The tape 35 of the second adhesive layer 26 is not limited to vinyl tape, and may be any resin tape. The tape 35 of the second adhesive layer 26 is preferably, for example, an insulating tape.

[0055] The second adhesive layer 26 is not limited to the tape 35 and may be, for example, a cylindrical member that surrounds the first adhesive layer 25. The stopcock 23 is not limited to a rubber stopper and may be made of any elastic material. In this way, the stopcock 23 may be made of any material that can seal the inside of the grommet 5.

[0056] The grommet 5 may be attached directly to the attachment point 3, for example, to the body of the vehicle, without using the bracket 9. The grommet 5 may have any shape as long as it can protect the electric wire 2 that is passed through the hole 27.

[0057] The assembly 22 does not have to be disposed only in the cylindrical portion 6, but may be shaped to extend across the base end 7 and reach the seat portion 8. The electric wire 2 may be a cable formed by bundling a plurality of electric wires.

[0058] 4 and 5, a wire harness (1) according to some embodiments of the present disclosure includes: a plurality of electric wires (2) each having an outer circumferential surface; an elastic stopcock (23) having a plurality of through holes (27) configured to waterproofly contact the outer circumferential surfaces of the plurality of electric wires (2) in a first length portion of the plurality of electric wires (2); a tubular braided shield (24) longer than the entire length of the stopcock (23), configured to cover the plurality of electric wires (2) and the stopcock (23) collectively; a tubular first adhesive layer (25) having a total length equal to or corresponding to the total length of the stopcock (23), configured to tightly contact the outer circumferential surface of the tubular braided shield (24) over the entire length of the tubular first adhesive layer (25); The electrical connector may include a tubular second adhesive layer (26) longer than the entire length of the tubular first adhesive layer (25), configured to adhere to the outer peripheral surface of the tubular first adhesive layer (25) over the entire length of the tubular first adhesive layer (25), and a grommet (5) having an elastic tubular portion (6) configured to allow the plurality of electric wires (2) to pass through.

[0059] [Appendix 2] In some embodiments, as shown in the examples of Figures 4 and 5, the stopcock (23), the tubular braided shield (24), the tubular first adhesive layer (25), and the tubular second adhesive layer (26) may form a multi-layer structure that covers the first length portions of the plurality of electric wires (2) in this order.

[0060] [Supplementary Note 3] In some embodiments, as shown in the examples of FIGS. 4 and 5, the second adhesive layer (26) may be in close contact with the outer surface of the tubular braided shield (24) in a second length portion adjacent to the first length portion of the plurality of electric wires (2).

[0061] [Appendix 4] In some embodiments, as shown in the examples of Figures 4 and 5, the multilayer structure including the stopcock (23), the tubular braided shield (24), the tubular first adhesive layer (25), and the tubular second adhesive layer (26) may be disposed on the elastic tubular portion (6) of the grommet (5), and the tubular second adhesive layer (26), which forms the radially outermost surface of the multilayer structure, may be in watertight contact with the inner surface (21) of the tubular portion (6) of the grommet (5).

[0062] [Appendix 5] In some embodiments, as shown in Figures 4 and 5, the outer peripheral surface of the stop valve (23) is surrounded by the inner peripheral surface (21) of the tubular portion (6) of the grommet (5), but does not need to be in direct contact with the inner peripheral surface (21) of the tubular portion (6).

[0063] While the present disclosure has been described with reference to the embodiments, it is understood that the present disclosure is not limited to the embodiments or structures. The present disclosure also encompasses various modifications and modifications within the scope of equivalents. In addition, various combinations and forms, including only one element, more than one element, or less than one element, are also within the scope and spirit of the present disclosure.

[0064] REFERENCE SIGNS LIST 1 Wire harness 2 Electric wire 3 Mounting point 4 Opening 5 Grommet 6 Cylinder portion 7 Base end 7a Recessed portion 8 Seat portion 9 Bracket 10 Fastening portion 13 Main body 14 Flange 15 Hole 16 Pin 17 Hole 18 Hole 21 Inner surface 22 Assembly 23 Stopcock 24 Shielding material 25 First adhesive layer 26 Second adhesive layer 27 Hole 30 Sealing portion 31 Wire 32 Braided shield 34 Butyl-based rubber sheet 35 Tape 38 Sealing portion 39 Wall portion 41 Jig 42 Roller P Shaft

Claims

1. A wire harness comprising: an electric wire for transmitting electricity; a grommet attached to an opening through which the electric wire passes and which houses the electric wire inside; a stop valve provided to stop water from entering the inside of the grommet and through which the electric wire passes; a shielding material attached to the periphery of the stop valve; a first adhesive layer attached to the outer periphery of the shielding material to adhere the shielding material to the stop valve; and a second adhesive layer attached to the outer periphery of the first adhesive layer to adhere the first adhesive layer to the shielding material.

2. The wire harness according to claim 1, wherein the shielding material is a braided shield formed of wires, and the first adhesive layer is at least partially made of butyl rubber.

3. A wire harness as set forth in claim 2, wherein the first adhesive layer is a sheet-like butyl rubber sheet that uses butyl rubber in at least a portion thereof, and the butyl rubber sheet is wound around the electric wire multiple times while shifting its position along the axial direction of the electric wire, and is attached to the braided shield in an intimate contact manner by applying pressure with a jig.

4. The wire harness according to claim 1, wherein the second adhesive layer is a tape wound multiple times with the positions shifted along the axial direction of the electric wire.

5. The wire harness according to claim 1, wherein the grommet has an annular seal on its inner surface to seal off the gap between the grommet and the second adhesive layer.

6. The wire harness according to claim 1, wherein the stopcock has a hole through which the electric wire passes, and the hole has an annular seal on its inner surface that seals the gap between the stopcock and the electric wire.

7. A wire harness as described in claim 1, wherein the grommet has: a tubular portion that houses an assembly including the stopcock, the electric wire, the shielding material, the first adhesive layer, and the second adhesive layer; and a seat portion that supports a base end of the tubular portion.

8. A wire harness as set forth in claim 7, wherein the seat has a water-stopping wall formed around the entire edge.