JP2009166635A - Wire harness routing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire harness routing structure capable of preventing damage to the connection part between a non-heat resistant wire inserted into a metal pipe and routed under a cabin floor and a heat resistant wire routed in an engine compartment by relieving a vibration given to the connection part, and of preventing the entry of water from the engine compartment side to the cabin side. <P>SOLUTION: The non-heat resistant wire 11 and the heat resistant wire 12 are connected to each other with terminals 15A, 15B. The terminal connection part 16 is stored in the terminal storage part 22 of a water cutting rubber part 20. The water cutting rubber part 20 is fitted, through an end opening 14, into a metal pipe 13 into which the non-heat resistant wire 11 is inserted. A seal lip 25 formed on the outer peripheral surface of the substrate part 21 of the water cutting rubber part 20 is press-fitted against the inner peripheral surface of the pipe 13. Consequently, the entry of water into the pipe 13 is prevented from occurring, and the terminal connection part 16 is secured to the inside of the pipe 13 through the water cutting rubber part 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wiring structure of a wire harness, and more particularly, in an electric vehicle or a hybrid vehicle, a wiring harness that is routed from a lower floor to an engine room and is routed through a metal pipe at the lower floor. Concerning the routing structure.

In an electric vehicle or a hybrid vehicle, a wire harness composed of a high-voltage electric wire that connects devices such as a battery, an inverter, and a wheel drive motor is routed under the floor under the floor panel of the vehicle.
FIG. 9 shows an example of this type of wire harness (see Japanese Patent Application Laid-Open No. 2004-171952). This wire harness 1 connects an inverter device 2 provided in an engine room and a motor 3 provided on a wheel, and is inserted and routed through a metal pipe 4 having both a shielding function and an exterior function.

For the wires that make up the wire harness that runs from the bottom of the floor to the engine room, heat-resistant wires are used on the engine room side where the temperature conditions of the high-temperature atmosphere are severe. Therefore, the use of non-heat-resistant electric wires is being studied.
In this way, when connecting in the engine room using heat-resistant and non-heat-resistant wires, the engine room is a wet area, so the connection part needs to be waterproofed, and the non-heat-resistant cable under the floor is made of metal. Since it is inserted into the pipe, it is necessary to prevent water from entering the metal pipe. And if an electric wire connection part is performed in an engine room, since this connection part is easy to receive a vibration, it is necessary to ensure electrical connection reliability.

JP 2004-171952 A

  The present invention, when connecting a non-heat-resistant electric wire inserted into a metal pipe to a heat-resistant electric wire in an engine room, waterproofs the connecting portion and prevents water from entering the metal pipe, and The issue is to improve connection reliability.

In order to solve the above problems, the present invention is an electric vehicle or a hybrid vehicle, and is a wiring structure of a wire harness composed of electric wires routed from the lower surface of the floor into the engine room,
The electric wire routed in the engine room is a heat-resistant electric wire, while the electric wire routed along the lower surface of the floor is a non-heat-resistant electric wire and routed through a metal pipe, In the adjacent pipe, a terminal connection portion between the terminal of the non-heat-resistant electric wire and the terminal of the heat-resistant electric wire is arranged,
Comprising a waterproof rubber part attached to the opening of the end of the pipe,
The water-stop rubber component is attached in close contact with the outer peripheral surface of the heat-resistant electric wire, and includes a terminal accommodating portion that accommodates the terminal connection portion and a seal lip provided on the outer peripheral surface, and the seal lip is attached to the pipe. There is provided a wiring structure of a wire harness that is pressed against an inner peripheral surface to prevent water from entering the pipe.

According to the wiring structure, the terminal connection portion between the heat-resistant electric wire and the non-heat-resistant electric wire is accommodated in the terminal accommodating portion of the water-stopping rubber component that is attached in close contact with the non-heat-resistant electric wire, and the water-stopping rubber component Since the seal lip on the outer peripheral surface of the pipe is pressed against the inner peripheral surface on the end opening side of the pipe, it is possible to reliably prevent water from entering the metal pipe, and accordingly, the water from the inside of the pipe into the terminal accommodating portion is immersed. Therefore, waterproofing of the terminal connecting portion can be achieved.
Moreover, since the terminal connection part is being fixed in the pipe via the water-stop rubber part, the influence of vibration on the engine room side can be reduced. Therefore, damage to the connecting portion caused by receiving vibration on the engine room side can be prevented, and electrical connection reliability can be improved.

  More specifically, the water-stop rubber component has a disc-shaped substrate portion provided with an insertion hole that is in close contact with the outer peripheral surface of the heat-resistant electric wire and provided with the seal lip on the outer peripheral surface, and projects from the substrate portion into the pipe. The terminal accommodating portion is configured such that one end of the terminal accommodating portion communicates with the insertion hole, and the other end of the terminal accommodating portion corresponding to the insertion hole has an insertion hole for a non-heat-resistant electric wire.

  The waterproof rubber component has a small-diameter cylindrical portion provided with an electric wire insertion portion communicating with the insertion hole of the heat-resistant electric wire protruding from the base plate portion, and covers the outer peripheral surface of the pipe from the outer periphery of the small-diameter cylindrical portion. It is preferable to provide a seal lip that projects the enlarged diameter cylindrical portion and presses the outer peripheral surface of the pipe on the inner peripheral surface of the enlarged diameter cylindrical portion on the tip opening side.

By providing the small-diameter cylindrical portion in this way, the contact area between the water-stop rubber component and the heat-resistant electric wire is increased and the sealing performance is improved, so that the terminal housing portion can be reliably prevented from being flooded. In addition, by providing the diameter-expanded cylinder portion, the pipe-side seal lip and the diameter-expanded cylinder portion seal lip can be press-contacted from both the inside and the outside to the opening on the tip side of the pipe. The sealing performance of the gap with the pipe is improved, and the water stoppage can be further improved.
In addition, since the mounting force of the water-stopping rubber component is increased, it is possible to prevent the water-stopping rubber component from being displaced from the terminal connection portion and causing a problem in water-stopping and insulating properties.

  When there are a plurality of terminal connection portions between the heat-resistant electric wire and the non-heat-resistant electric wire, a plurality of the terminal accommodating portions protrude from the substrate portion of the waterproof rubber component, and one terminal connecting portion is provided in each terminal accommodating portion. It is good also as a structure which accommodates.

Furthermore, in the electric vehicle or the hybrid vehicle, the present invention is a wiring structure of a wire harness composed of electric wires routed from the lower surface of the floor into the engine room,
While the electric wire to be routed in the engine room is a heat-resistant electric wire, the electric wire to be routed along the lower surface of the floor is a non-heat-resistant electric wire and is routed through a metal pipe,
Inserting the heat-resistant electric wire into the pipe, connecting the heat-resistant electric wire and the non-heat-resistant electric wire by terminal fitting inside the pipe, and
A waterproof rubber part attached to the heat-resistant electric wire and attached to the opening of the pipe,
The water-stop rubber component includes a small-diameter cylindrical portion that is in close contact with the outer peripheral surface of the heat-resistant electric wire, a disk-shaped substrate portion that protrudes from the tip of the small-diameter cylindrical portion, and a diameter expansion that protrudes from the other end side of the small-diameter cylindrical portion. A cylindrical portion, and a seal lip is provided on the outer peripheral surface of the base plate portion and the inner peripheral surface on the tip opening side of the enlarged diameter cylindrical portion, and the base plate portion is inserted from the opening of the pipe. The seal lip of the substrate portion is pressed against the peripheral surface, and the end opening side of the diameter-expanded cylindrical portion is covered with the outer peripheral surface of the pipe, and the seal lip provided on the end opening side is applied to the outer peripheral surface of the pipe. We also provide a wiring harness wiring structure that is in pressure contact.

In the wiring structure of the wire harness, the terminal connection portion is not located inside the pipe at a position close to the tip opening of the pipe, and the terminal connection portion is located inside the pipe far from the tip opening of the pipe.
In this case, the waterproof rubber plug is only provided with a function of sealing the gap between the heat-resistant electric wire and the pipe, and the terminal connection part located inside the pipe is waterproofed by preventing water from entering the pipe. Yes. With this configuration, the configuration of the water-stop rubber component can be simplified.
The insulation between the terminal connection portion and the pipe is preferably ensured by coating the terminal connection portion with a tape or tube made of an insulating material.

As described above, according to the present invention, since the terminal connection portion between the heat-resistant electric wire and the non-heat-resistant electric wire can be fixed in the metal pipe via the waterproof rubber component, the engine room is transmitted to the terminal connection portion. Side vibration can be mitigated, damage to the terminal connection portion can be prevented, and connection reliability can be improved.
Since the gap between the outer peripheral surface of the heat-resistant electric wire and the inner peripheral surface of the pipe can be sealed by the waterproof rubber part, the terminal connection portion can be prevented from being wet, and the water on the engine room side can pass through the gap. Intrusion to the side can also be prevented.
Furthermore, the terminal connection part is accommodated in the terminal accommodation part formed in the water-stop rubber component and is fixed in the pipe, so that the insulation between the terminal connection part and the pipe can be realized with certainty.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a wiring structure of the wire harness W / H according to the first embodiment of the present invention.

  As shown in FIG. 1, the wire harness W / H includes an electric wire W connecting the high voltage battery B mounted on the rear side and the inverter device I mounted on the engine room Y in the hybrid vehicle 10. The vehicle is routed from the vehicle compartment X side to the engine room Y side in a three-dimensional posture bent vertically and horizontally along the lower surface of the floor panel F.

  The electric wire W is composed of a non-heat-resistant electric wire 11 arranged on the lower surface of the floor panel F on the passenger compartment X side and a heat-resistant electric wire 12 arranged in the engine room Y. The non-heat-resistant electric wire 11 is made of a metal pipe 13. It is inserted inside. As shown in FIG. 1, the pipe 13 is drawn into the engine room Y from the lower part of the floor of the vehicle body through the floor panel FP, and the opening 14 of the pipe 13 is located in the engine room Y in the wet area.

  As shown in FIG. 2, the non-heat-resistant electric wire 11 and the heat-resistant electric wire 12 are male and female fitted with a female terminal 15A crimped to the end of the non-heat-resistant electric wire 11 and a male terminal 15B crimped to the end of the heat-resistant electric wire 12. The terminal connection portion 16 is internally fitted and fixed to the opening 14 of the pipe 13 using a water blocking rubber component 20.

The water-stop rubber component 20 has a large-diameter disk-shaped substrate portion 21 and a small-diameter cylindrical terminal accommodating portion 22 that accommodates the terminal connecting portion 16 from the center of one end surface of the substrate portion 21. .
As shown in FIG. 2 and FIG. 3 (B), the substrate portion 21 is penetrated in the axial direction through a heat-resistant electric wire insertion hole 24 through which the heat-resistant electric wire 12 is closely attached, and the heat-resistant electric wire insertion hole 24 is connected to the terminal. It communicates with the accommodating part 23. The inner diameter D1 of the heat-resistant electric wire insertion hole 24 is set slightly smaller than the outer diameter of the heat-resistant electric wire 12 and is in close contact with the outer peripheral surface of the heat-resistant electric wire 12.
A plurality of seal lips 25 are formed in an annular shape on the outer peripheral surface of the substrate portion 21 as shown in FIGS.

  One end side of the terminal accommodating portion 22 communicates with the heat-resistant electric wire insertion hole 24, and a non-heat-resistant electric wire insertion hole 26 for inserting the non-heat-resistant electric wire 11 is opened in the other end wall 27 facing the heat-resistant electric wire insertion hole 24. Yes. The non-heat-resistant electric wire insertion hole 26 has an inner diameter D2 that is in close contact with the outer peripheral surface of the non-heat-resistant electric wire 11 and is forced open when the terminal connecting portion 16 is passed through.

Next, an operation procedure for fixing the terminal connecting portion 16 in the pipe 13 using the water blocking rubber component 20 will be described.
First, the terminals 15A and 15B are crimped and connected to the ends of the heat resistant wire 12 and the non-heat resistant wire 11, respectively.
Next, as shown in FIG. 4 (A), the heat-resistant electric wire 12 is inserted into the heat-resistant electric wire insertion hole 24 of the substrate portion 21 of the water-stop rubber component 20, and the accommodation chamber 23 of the terminal accommodation portion 22, and further the non-heat-resistant electric wire. The wire is inserted into the wire insertion hole 26 and pulled out from the non-heat resistant wire insertion hole 26. The non-heat-resistant electric wire 11 draws a terminal portion from the tip opening 14 of the pipe 13 to a required length.

Next, as shown in FIG. 4B, the terminals 15A and 15B connected to the terminals of the non-heat-resistant electric wire 11 and the heat-resistant electric wire 12, respectively, are connected by male and female.
Next, as shown in FIG. 4C, the terminal connecting portion 16 is pulled into the terminal accommodating portion 22 by forcibly opening the non-heat-resistant electric wire insertion hole 27, and the non-heat-resistant electric wire 11 is drawn from the non-heat-resistant electric wire insertion hole 27. Pull out.
Finally, the water-stopping rubber component 20 is pushed into the opening 13a of the pipe 13, and the seal lip 25 on the outer peripheral surface of the water-stopping rubber component 20 is pressed against the inner peripheral surface 13a of the pipe 13 as shown in FIG.

  In the routing structure of the present invention, the terminal connection portion 16 of the non-heat-resistant electric wire 11 and the heat-resistant electric wire 12 is fixed in the pipe 13 via the water stop rubber component 20 so that the terminal connection portion 16 receives the engine room Y side. Since the influence of vibration from the vibration can be mitigated, damage to the terminal connection portion 16 due to the vibration can be prevented, and the connection reliability of the wire harness W / H can be improved.

  Moreover, since the terminal connection part 16 is fixed in the pipe 13 in the state accommodated completely in the terminal accommodating part 22 of the water-stop rubber component 20, the pipe 13, the core wires 11b and 12b, and the terminal 15 are in direct contact with each other. The lip portion 27 provided on the periphery of the non-heat-resistant electric wire insertion hole 26 can also prevent the terminal connection portion 16 from being exposed to some stress and being exposed from the non-heat-resistant electric wire insertion hole 26. Insulation can be realized with certainty.

  Further, the clearance between the heat-resistant electric wire 11 and the pipe 13 routed on the engine room Y side is such that the heat-resistant electric wire insertion hole 24 of the board portion 21 of the water-stopping rubber component 20 is in close contact with the outer peripheral surface of the heat-resistant electric wire 11. Since the seal lip 25 on the outer peripheral surface of the base plate portion 21 is sealed by being pressed against the inner peripheral surface 13a of the pipe 13, water may enter the vehicle compartment X through the gap, and the terminal connecting portion 16 may be covered. Can prevent water.

FIG. 5 shows a second embodiment of the present invention.
In 1st embodiment, although the water-stop rubber component which attaches one electric wire W which consists of the heat-resistant electric wire 12 and the non-heat-resistant electric wire 11 to the water-stop rubber component 20 is shown, 2nd embodiment is the heat-resistant electric wire 12 and The case where the number of the electric wires which connect the non-heat-resistant electric wire 11 is three is shown.
Three non-heat-resistant electric wires 12 are inserted into one metal pipe 13, and each non-heat-resistant electric wire 12 is fitted to the heat-resistant electric wire 11 to form a terminal connection portion 16.

The water blocking rubber component 20 according to the present embodiment projects three terminal accommodating portions 22 from the same surface of the substrate portion 21, and accommodates one terminal connecting portion 16 in each terminal accommodating portion 22. Other configurations are the same as those in the first embodiment.
In addition, what is necessary is just to increase the terminal accommodating part 22, if the number of the electric wires W increases.

FIG. 6 shows a third embodiment of the present invention.
In the third embodiment, the waterproof rubber component 20-1 is coaxial with a small-diameter cylindrical portion 28 that is in close contact with the outer peripheral surface of the heat-resistant electric wire 12 from the surface opposite to the protruding side of the terminal accommodating portion 22. It protrudes above. The small-diameter cylindrical portion 28 is provided with a heat-resistant electric wire insertion portion 29 that communicates with the heat-resistant electric wire insertion hole 24 of the substrate portion 21, and an enlarged diameter cylindrical portion 30 that protrudes from the outer periphery on the protruding tip side in a folded shape. ing. An annular seal lip 31 is provided on the inner peripheral surface of the enlarged diameter cylindrical portion 30 on the tip opening side.

The procedure for fixing the terminal connecting portion 16 in the pipe 13 using the water-stop rubber component 20-1 is the same as that in the first embodiment until the procedure for storing the terminal connecting portion 16 in the terminal accommodating portion 22. is there.
Next, the waterproof rubber component 20-1 in which the terminal connecting portion 16 is accommodated in the terminal accommodating portion 22 is inserted from the tip opening 14 of the pipe 13, and the sealing lip of the substrate portion 21 is inserted into the inner peripheral surface 13a of the pipe 13. 25, and the outer peripheral surface 13b is covered with the diameter-expanded cylindrical portion 30 to press-contact the seal lip 31.

  In the present embodiment, not only the heat-resistant electric wire insertion hole 24 of the substrate portion 21 but also the electric wire insertion portion 29 of the small-diameter cylindrical portion 28 are in close contact with the outer peripheral surface of the heat-resistant electric wire 12, and the adhesion area is expanded. On the tip opening 14 side, the seal lip 25 of the substrate portion 21 and the seal lip 31 of the diameter-expanded cylindrical portion 30 are doubly pressed from inside and outside to seal the gap. Accordingly, the water stop performance can be further enhanced, and the mounting force of the water stop rubber component 20 ′ is also increased. Therefore, the mounting position of the water stop rubber component 20 ′ is displaced from the terminal connection portion 16, and the water stop and insulation properties are increased. It is possible to prevent defects from occurring.

7 and 8 show a fourth embodiment of the present invention.
In the fourth embodiment, the water stop rubber component 20-2 is not provided with the terminal accommodating portion 22 that accommodates the terminal connecting portion 16, and is configured by only the substrate portion 21, the small diameter cylindrical portion 28, and the enlarged diameter cylindrical portion 30. Yes. Other configurations are the same as those of the third embodiment.

  When using the water-stop rubber component 20-2, first, the heat-resistant electric wire 12 is inserted into the electric wire insertion portion 29 of the small-diameter cylindrical portion 28 of the water-stop rubber component 20-2, and further the heat-resistant electric wire insertion hole 24 of the substrate portion 21. Pull out the terminal part to the inside and communicate. The non-heat-resistant electric wire 11 draws a terminal portion from the tip opening 14 of the pipe 13 to a required length.

Next, as shown in FIG. 8A, the non-heat-resistant electric wire 11 and the terminals 15A and 15B connected to the ends of the heat-resistant electric wire 12 are fitted and connected.
Next, as shown in FIG. 8B, a resin tape 40 is wound around the outer periphery of the terminal connection portion 16 to insulate it.
Finally, the terminal connecting portion 16 is inserted into the pipe 13 from the front end opening 14 and then the waterproof rubber component 20-2 attached to the heat-resistant electric wire 12 is also inserted, as shown in FIG. The seal lip 25 formed on the outer peripheral surface of the substrate portion 21 of the water-stop rubber component 20-2 and the seal lip 31 of the enlarged diameter cylindrical portion 30 are brought into pressure contact with the inner peripheral surface 13a and the outer peripheral surface 13b of the pipe 13, respectively.

Also in this embodiment, since the terminal connection portion 16 can be fixed in the pipe 13 via the water blocking rubber part 20-2, the influence of the vibration on the engine room Y side received by the terminal connection portion 16 is reduced. And damage to the connecting portion 16 can be prevented.
Further, by covering the terminal connection portion 16 with the resin tape 40, insulation between the terminal connection portion 16 and the pipe 13 can be realized.
Further, since the gap between the heat-resistant electric wire 12 and the pipe 13 can be sealed with the water blocking rubber part 20-2, the water on the engine room Y side enters the vehicle compartment X side through the gap, and the terminal connecting portion 16 Can be prevented from getting wet.

It is the schematic which shows the wiring path | route of the wire harness which concerns on 1st embodiment of this invention. (A) is sectional explanatory drawing which shows the wiring structure of the wire harness which concerns on 1st embodiment, (B) is drawing which shows a terminal connection part. The water-stop rubber component shown in FIG. 2 is shown, (A) is a front view, and (B) and (C) are both side views. (A)-(C) are explanatory drawings which show the procedure which fixes the terminal connection part of a wire harness in a pipe. It is shown to 2nd embodiment of this invention, (A) is a side view of a water-stop rubber component, (B) is sectional explanatory drawing which shows the wiring structure of the wire harness which attached the water-stop rubber component. It is sectional explanatory drawing which shows the wiring structure of the wire harness which concerns on 3rd embodiment of this invention. It is sectional explanatory drawing which shows the wiring structure of the wire harness which concerns on 4th embodiment of this invention. (A) (B) is explanatory drawing which shows the procedure for implement | achieving the routing structure shown in FIG. It is a figure which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Hybrid vehicle 11 Non-heat-resistant electric wire 12 Heat-resistant electric wire 13 Metal pipe 15A, 15B Terminal 16 Terminal connection part 20, 20-1, 20-2 Waterproof rubber component 21 Board part 22 Terminal accommodating part 24 Heat-resistant electric wire insertion hole 25, 31 Seal lip 26 Non-heat resistant wire insertion hole W / H wire harness W wire

Claims (5)

In an electric vehicle or a hybrid vehicle, a wiring structure of a wire harness composed of electric wires routed from the floor lower surface into the engine room,
The electric wire routed in the engine room is a heat-resistant electric wire, while the electric wire routed along the lower surface of the floor is a non-heat-resistant electric wire and routed through a metal pipe, In the adjacent pipe, a terminal connection portion between the terminal of the non-heat-resistant electric wire and the terminal of the heat-resistant electric wire is arranged,
Comprising a waterproof rubber part attached to the opening of the end of the pipe,
The water-stop rubber component is attached in close contact with the outer peripheral surface of the heat-resistant electric wire, and includes a terminal accommodating portion that accommodates the terminal connection portion and a seal lip provided on the outer peripheral surface, and the seal lip is attached to the pipe. A wiring structure for a wire harness, characterized in that the pipe is pressed against an inner peripheral surface to prevent water from entering the pipe.   The water-stop rubber component has a disc-shaped substrate portion provided with an insertion hole that is in close contact with the outer peripheral surface of the heat-resistant electric wire and provided with the seal lip on the outer peripheral surface, and the terminal housing that protrudes from the substrate portion into the pipe 2. The wire harness according to claim 1, wherein one end of the terminal accommodating portion communicates with the insertion hole, and the other end of the terminal accommodating portion corresponding to the insertion hole is provided with an insertion hole for a non-heat-resistant electric wire. The routing structure.   The water stop rubber part has a small diameter cylindrical portion provided with an electric wire insertion portion communicating with the insertion hole of the heat resistant electric wire protruding from the base plate portion, and an expanded diameter that covers the outer peripheral surface of the pipe from the outer periphery of the small diameter cylindrical portion. The wiring structure of the wire harness according to claim 2, wherein a seal lip is provided on the inner peripheral surface on the tip opening side of the enlarged diameter cylindrical portion so as to be pressed against the outer peripheral surface of the pipe.   When there are a plurality of terminal connection portions of the heat-resistant electric wire and the non-heat-resistant electric wire, a plurality of the terminal accommodating portions protrude from the substrate portion of the waterproof rubber component, and one terminal connecting portion is provided in each terminal accommodating portion. The wiring structure of the wire harness of Claim 2 or Claim 3 which has accommodated. In an electric vehicle or a hybrid vehicle, a wiring structure of a wire harness composed of electric wires routed from the floor lower surface into the engine room,
While the electric wire to be routed in the engine room is a heat-resistant electric wire, the electric wire to be routed along the lower surface of the floor is a non-heat-resistant electric wire and is routed through a metal pipe,
Inserting the heat-resistant electric wire into the pipe, connecting the heat-resistant electric wire and the non-heat-resistant electric wire by terminal fitting inside the pipe, and
A waterproof rubber part attached to the heat-resistant electric wire and attached to the opening of the pipe,
The water-stop rubber component includes a small-diameter cylindrical portion that is in close contact with the outer peripheral surface of the heat-resistant electric wire, a disk-shaped substrate portion that protrudes from the tip of the small-diameter cylindrical portion, and a diameter expansion that protrudes from the other end side of the small-diameter cylindrical portion. A cylindrical portion, and a seal lip is provided on the outer peripheral surface of the base plate portion and the inner peripheral surface on the tip opening side of the enlarged diameter cylindrical portion, and the base plate portion is inserted from the opening of the pipe. The seal lip of the substrate portion is pressed against the peripheral surface, and the end opening side of the diameter-expanded cylindrical portion is covered with the outer peripheral surface of the pipe, and the seal lip provided on the end opening side is applied to the outer peripheral surface of the pipe. Wire harness wiring structure in pressure contact.

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