JP2024056188A - Wiring materials - Google Patents

Abstract

[Problem] To provide a technology that can prevent water from entering through a gap between a molded part and an electric wire without using a waterproof plug as an insert part. [Solution] A wiring member 10 includes a molded part 20, an electric wire 30 including a first section covered by the molded part 20 and a second section connected to the first section and extending outside the molded part 20, and a waterproof plug 40 provided outside the molded part 20 and covering an annular boundary line 24 that is a boundary between the electric wire 30 on the outer surface of the molded part 20. The waterproof plug 40 includes a first contact part 41 that contacts the outer surface of the molded part 20 on the outer periphery side of the annular boundary line 24 in a watertight manner, and a second contact part 42 that contacts the outer periphery of the electric wire 30 in a watertight manner in the second section. [Selected Figure] Figure 2

Description

This disclosure relates to wiring members.

Patent document 1 discloses a waterproof structure for a cable having an electric wire and a sheath that covers the outer periphery of the electric wire. The waterproof structure for the cable includes a waterproof plug disposed on the outer periphery of the electric wire exposed from the sheath, a resin member through which the electric wire is inserted and in which an insertion hole that accommodates the waterproof plug is formed, and a molded body made of resin that covers a part of the sheath and at least a part of the resin member.

JP 2020-25416 A

In the waterproof structure of the cable described in Patent Document 1, the waterproof plug and the resin member had to be inserted together with the cable when forming the molded body.

Therefore, the objective is to provide a technology that can prevent water from entering through the gap between the molded part and the electric wire without using a waterproof plug as an insert part.

The wiring member of the present disclosure is a wiring member that includes a molded section, an electric wire including a first section covered by the molded section, and a second section connected to the first section and extending outside the molded section, and a waterproof plug that is provided on the outside of the molded section and covers the annular boundary line that is the boundary between the electric wire and the outer surface of the molded section, and the waterproof plug includes a first contact portion that contacts the outer surface of the molded section on the outer periphery side of the annular boundary line in a manner that can prevent water from entering, and a second contact portion that contacts the outer periphery of the electric wire in a manner that can prevent water from entering in the second section.

The objective of this disclosure is to provide a technology that can prevent water from entering through the gap between the molded part and the electric wire without using a waterproof plug as an insert part.

FIG. 1 is a plan view showing a wiring member according to a first embodiment. FIG. 2 is a cross-sectional view taken along line II-II of FIG. FIG. 3 is an exploded perspective view showing the wiring member. FIG. 4 is a plan view showing a wiring member according to the second embodiment. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is an exploded perspective view showing the wiring member.

[Description of the embodiments of the present disclosure]
First, the embodiments of the present disclosure will be listed and described.

The wiring components disclosed herein are as follows:

(1) A wiring member comprising: a molded section; an electric wire including a first section covered by the molded section; and a second section connected to the first section and extending outside the molded section; and a waterproof plug provided on the outside of the molded section and covering an annular boundary line that is a boundary between the electric wire and the outer surface of the molded section, the waterproof plug including a first contact portion that contacts the outer surface of the molded section on the outer periphery side of the annular boundary line in a manner that allows water to be blocked, and a second contact portion that contacts the outer periphery of the electric wire in a manner that allows water to be blocked in the second section.

According to the wiring member (1), the first contact portion prevents water on the outside of the first contact portion from flowing along the outer surface of the molded portion to the annular boundary line. The second contact portion prevents water on the outside of the second contact portion from flowing along the outer surface of the electric wire to the annular boundary line. As a result, the infiltration of water into the annular boundary line is prevented by the waterproof plug provided on the outside of the molded portion, so that the infiltration of water from the gap between the molded portion and the electric wire can be prevented without using a waterproof plug as an insert part.

(2) In the wiring member of (1), the first contact portion and the outer surface may be aligned along the extension direction of the electric wire. This makes the direction in which the first contact portion contacts the outer surface of the molded portion and the direction in which the second contact portion contacts the outer periphery of the electric wire different from each other.

(3) The wiring member of (2) may further include a retainer that maintains the contact state of the waterproof plug with the molded portion and the electric wire, the retainer including a fixing portion to the molded portion and a holding portion that holds the waterproof plug, and the first contact portion may be pressed against the molded portion along the extension direction by the retainer. This makes it easier to maintain the appropriate contact state of the waterproof plug with the electric wire and the molded portion.

(4) In the wiring member of (2) or (3), a plurality of the electric wires may be provided, a plurality of through holes may be formed in the waterproof plug formed in a plate shape, the electric wires may pass through each of the plurality of through holes, and the inner circumferential surface of each of the plurality of through holes may be the second contact portion. This makes it possible to suppress an increase in the number of parts constituting the wiring member.

(5) In the wiring member of (1), the molded portion may include a main body portion and a tubular portion that protrudes from the main body portion in the extending direction of the electric wire and covers the outer periphery of the electric wire, and the first contact portion may contact the outer periphery of the tubular portion. In this way, the direction in which the first contact portion contacts the molded portion and the direction in which the second contact portion contacts the electric wire are the same.

(6) The wiring member of (5) may further include a retainer that maintains the contact state of the waterproof plug with the molded portion and the electric wire, the retainer including a fixing portion to the molded portion and a holding portion that holds the waterproof plug, and the waterproof plug may be housed in the holding portion. This makes it easier to maintain the appropriate contact state of the waterproof plug with the electric wire and the molded portion.

(7) In the wiring member of (6), a locking receiving portion may be provided at the base end of the tubular portion, and the fixing portion may have a protruding piece extending from the holding portion toward the main body portion along the extension direction, and a locking portion provided on the protruding piece and locking with the locking receiving portion. This prevents the retainer from becoming larger than the molded portion in the radial direction of the electric wire.

(8) In any one of the wiring members (1) to (7), a terminal is provided at an end of the first section of the electric wire, a sheath is provided at the second section of the electric wire, the molded part includes a portion that serves as a connector housing for holding the terminal, and an end of the sheath may be separated from the waterproof plug and the retainer along the extension direction. In this way, even when the molded part serves as a connector housing, the waterproof plug can prevent water from entering through the gap between the molded part and the electric wire, and water can be prevented from getting on the terminal. In addition, it becomes easy to provide a molded part at the end of the electric wire with the electric wire passed through the waterproof plug and the retainer.

[Details of the embodiment of the present disclosure]
Specific examples of wiring members according to the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[Embodiment 1]
Hereinafter, a wiring member according to embodiment 1 will be described. Fig. 1 is a plan view showing a wiring member 10 according to embodiment 1. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is an exploded perspective view showing the wiring member 10.

The wiring member 10 includes a molded portion 20, an electric wire 30, and a waterproof plug 40. Here, the wiring member 10 further includes a retainer 50. The wiring member 10 connects, for example, devices mounted on a vehicle. Here, one end of the wiring member 10 is connected to a device disposed in the vehicle's suspension. Such a device is, for example, a wheel speed sensor for an electric parking brake (EPB) or an antilock brake system (ABS).

The molded part 20 covers the electric wire 30. The molded part 20 is formed by insert molding using a metal mold with the electric wire 30 as an insert part. The molded part 20 is an insulator. For example, the molded part 20 is made of a resin such as nylon. The molded part 20 includes a main body part 21 and a locking receiving part 25. The main body part 21 covers the electric wire 30. The locking receiving part 25 is used for fixing to the retainer 50.

The electric wire 30 includes a first section and a second section. The first section is covered by the molded section 20. The second section is continuous with the first section. The second section extends outside the molded section 20. The electric wire 30 is a covered electric wire including a core wire 31 and a covering layer 32. The core wire 31 is a conductor. The core wire 31 is made of a metal such as copper, copper alloy, aluminum, or aluminum alloy. The covering layer 32 is an insulator. For example, the covering layer 32 is made of a resin such as polyethylene. Here, multiple electric wires 30 (here, two) are covered by one molded section 20. Here, a sheath 33 is provided in the second section of the electric wire 30. The sheath 33 is formed by extrusion molding a resin or the like around the multiple electric wires 30. The sheath 33 is made of a resin such as polyurethane.

Here, the main body 21 is provided at the end of the electric wire 30 and serves as a connector housing. Here, the main body 21 is formed in a rectangular parallelepiped shape. One outer surface of the main body 21 is provided with a connection port 22 that is connected to a mating connector. In this disclosure, the outer surface of the main body 21 on which the connection port 22 is provided is referred to as the front surface. The electric wire 30 extends from an outer surface of the main body 21 other than the front surface. Here, the electric wire 30 extends from the rear surface 23 opposite the front surface. The electric wire 30 may also extend from a side surface of the main body 21 other than the front surface and the rear surface 23.

A terminal 34 is connected to the end of the first section of the electric wire 30. The manner of connection between the electric wire 30 and the terminal 34 is not particularly limited and may be soldering, crimping, welding, or the like. The connection portion between the electric wire 30 and the terminal 34 is covered by the main body 21. The terminal 34 is also an insert part. The main body 21 as a connector housing holds the multiple terminals 34 in a predetermined arrangement. The electric wire 30 and the terminals 34 are connected to each other to form an electric wire with terminals, and are then placed in the molding die of the molded part 20.

Here, terminal 34 is a male terminal. The inside of connection port 22 is a space in which the tips of multiple male terminals are exposed. The part of main body 21 that surrounds the space inside connection port 22 is also called a hood part. Another connector housing that holds a female terminal is inserted into connection port 22, and the male terminal and female terminal are connected.

The locking receiving portion 25 is provided on the outer surface of the main body portion 21. Here, the locking receiving portion 25 is provided on each of a pair of side surfaces of the outer surface of the main body portion 21. Here, the locking receiving portion 25 is a recess in which part of the outer surface of the main body portion 21 is recessed.

A boundary line between the molded part 20 and the electric wire 30 appears on the outer surface (here, the rear surface 23) of the molded part 20. This boundary line extends in a ring shape along the outer periphery of the electric wire 30. In this disclosure, this boundary line is referred to as an annular boundary line 24. A contact surface with the first contact part 41 is provided on the rear surface 23 of the molded part 20 on the outer periphery side of the annular boundary line 24.

The resin of the molded part 20 and the resin of the coating layer 32 are different types of resin. For example, the molded part 20 is made of nylon, and the coating layer 32 is made of polyethylene. Although the molded part 20 and the coating layer 32 are in contact macroscopically, they are not completely fused microscopically, and a gap through which water can penetrate is created between the molded part 20 and the coating layer 32. A waterproof plug 40 is provided to prevent water from penetrating through the gap.

The waterproof plug 40 is provided on the outside of the molded section 20. The waterproof plug 40 is not an insert part of the molded section 20, but is attached to the outside of the molded section 20 after molding. The waterproof plug 40 covers the annular boundary line 24 and contacts the molded section 20 and the electric wire 30 around the annular boundary line 24. The waterproof plug 40 includes a first contact portion 41 and a second contact portion 42. The first contact portion 41 contacts the outer surface of the molded section 20 on the outer periphery side of the annular boundary line 24 in a manner that allows water to flow through. The second contact portion 42 contacts the outer periphery of the electric wire 30 in a manner that allows water to flow through in the second section.

In the present disclosure, contact that can be watertight means contact that does not create gaps through which water can penetrate at the contact portion. As described above, macroscopically, the molded part 20 and the electric wire 30 are in contact with each other, but microscopically, gaps through which water can penetrate may be created between the molded part 20 and the electric wire 30. There is no gap between the first contact part 41 and the molded part 20, or even if there is a gap, the gap is smaller than the gap between the molded part 20 and the electric wire 30, making it possible to suppress the penetration of water. Similarly, there is no gap between the second contact part 42 and the electric wire 30, or even if there is a gap, the gap is smaller than the gap between the molded part 20 and the electric wire 30, making it possible to suppress the penetration of water.

The waterproof plug 40 is formed in a plate shape. The waterproof plug 40 is made of an elastic material such as rubber. A through hole 43 is formed in the waterproof plug 40. The through hole 43 penetrates the waterproof plug 40 in the thickness direction. The peripheral portion of the through hole 43 in the main surface of the waterproof plug 40 is the first contact portion 41. The first contact portion 41 and the contact surface on the outer surface of the molded part 20 are aligned along the extension direction of the electric wire 30 (the protruding direction of the electric wire 30 from the molded part 20). The inner surface of the through hole 43 in the waterproof plug 40 is the second contact portion 42. The second contact portion 42 and the contact surface on the outer surface of the electric wire 30 are aligned in the radial direction. Both the electric wire 30 and the through hole 43 are circular, and the inner diameter of the through hole 43 is the same as or smaller than the outer diameter of the electric wire 30.

Here, the waterproof plug 40 has multiple through holes 43 formed. An electric wire 30 passes through each of the multiple through holes 43. One waterproof plug 40 contacts the multiple electric wires 30. The inner circumferential surface of each of the multiple through holes 43 is the second contact portion 42.

The first contact portion 41 may be provided so as to surround each of the multiple through holes 43. In other words, multiple first contact portions 41 may be provided so as to correspond to each of the multiple through holes 43. One first contact portion 41 may be provided so as to surround all of the multiple through holes 43. In other words, only one first contact portion 41 may be provided for one waterproof plug 40 in which multiple through holes 43 are formed.

Here, the first contact portion 41 and the rear surface 23 are in contact with each other at their flat surfaces. At least one of the first contact portion 41 and the rear surface 23 may be provided with an annular protrusion 44.

The retainer 50 maintains the contact state of the waterproof plug 40 with the molded section 20 and the electric wire 30. The retainer 50 includes a fixing section 51 and a holding section 54. The fixing section 51 is fixed to the molded section 20. The holding section 54 holds the waterproof plug 40. The first contact section 41 is pressed against the molded section 20 by the retainer 50 along the extension direction of the electric wire 30. The waterproof plug 40 may be compressed by the retainer 50 along the extension direction of the electric wire 30. The retainer 50 and the waterproof plug 40 may or may not be in contact with each other so as to be able to stop water.

The fixing portion 51 has a protruding piece 52 and an engaging portion 53. The protruding piece 52 extends from the holding portion 54 toward the molded portion 20 in the extending direction. Here, a pair of protruding pieces 52 are provided. The engaging portion 53 is provided on the protruding piece 52. The engaging portion 53 engages with the engaging receiving portion 25. Here, the engaging portion 53 is formed in a convex shape, and the engaging receiving portion 25 is formed in a concave shape. The engaging portion 53 may be formed in a concave shape, and the engaging receiving portion 25 may be formed in a convex shape.

The holding portion 54 is formed in a plate shape. Insertion holes 55 are formed in the holding portion 54. The insertion holes 55 penetrate the holding portion 54 in the thickness direction. The number of insertion holes 55 is the same as the number of electric wires 30. The electric wires 30 penetrate each of the multiple insertion holes 55. The inner diameter of the insertion holes 55 may be the same as or larger than the outer diameter of the electric wires 30.

Here, the holding portion 54 is formed in a plate shape larger than the waterproof plug 40. The waterproof plug 40 is sandwiched between the molded portion 20 and the holding portion 54. A positioning recess 56 is formed in the holding portion 54. The positioning recess 56 is formed to a size corresponding to the waterproof plug 40. The waterproof plug 40 fits into the positioning recess 56. An insertion hole 55 is formed in the bottom of the positioning recess 56. However, the positioning recess 56 does not necessarily have to be formed in the holding portion 54.

The surface of the holding portion 54 that comes into contact with the waterproof plug 40 (here, the bottom surface of the positioning recess 56) is a flat surface. An annular protrusion 44 may be provided on the surface of the holding portion 54 that comes into contact with the waterproof plug 40.

The end of the sheath 33 is separated from the waterproof plug 40 and the retainer 50. For example, the molded part 20 is formed at the end of the electric wire 30 while the electric wire 30 is passed through the waterproof plug 40 and the retainer 50. The molded part 20 is formed while the waterproof plug 40 and the retainer 50 are retracted to the other end side of the electric wire 30 so that they do not enter the molding die for the molded part 20.

After the molded section 20 is formed, the waterproof plug 40 and the retainer 50 are moved along the electric wire 30 toward the molded section 20. The waterproof plug 40 comes into contact with the rear surface 23, and the locking portion 53 locks into the locking receiving portion 25, forming the wiring member 10.

The end of the sheath 33 is separated from the waterproof plug 40 and the retainer 50, which makes it easy for the waterproof plug 40 and the retainer 50 to retreat to the other end of the wire 30. The waterproof plug 40 and the retainer 50 retreating to the other end of the wire 30 are stopped by the end of the sheath 33, making it difficult for them to move beyond the end of the sheath 33 toward the other end. The distance between the end of the sheath 33 and the waterproof plug 40 and the retainer 50 can be set appropriately depending on the length dimension to which the waterproof plug 40 and the retainer 50 are retreated.

According to the wiring member 10 configured as described above, the first contact portion 41 prevents water outside the first contact portion 41 from reaching the annular boundary line 24 along the outer surface of the molded portion 20. The second contact portion 42 also prevents water outside the second contact portion 42 from reaching the annular boundary line 24 along the outer surface of the electric wire 30. As a result, the intrusion of water into the annular boundary line 24 is prevented by the waterproof plug 40 provided on the outside of the molded portion 20, and therefore the intrusion of water from the gap between the molded portion 20 and the electric wire 30 can be prevented without the waterproof plug 40 being an insert part.

The first contact portion 41 and the outer surface are aligned along the extension direction of the electric wire 30. As a result, the direction in which the first contact portion 41 contacts the outer surface of the molded portion 20 and the direction in which the second contact portion 42 contacts the outer periphery of the electric wire 30 are different from each other.

The device further includes a retainer 50 that maintains the contact state of the waterproof plug 40 with the molded part 20 and the electric wire 30, and the first contact part 41 is pressed against the molded part 20 along the extension direction by the retainer 50. This makes it easier to maintain the appropriate contact state of the waterproof plug 40 with the electric wire 30 and the molded part 20.

The inner circumferential surface of each of the multiple through holes 43 serves as the second contact portion 42. This makes it possible to suppress an increase in the number of parts constituting the wiring member 10.

In addition, since the molded part 20 includes a portion that is a connector housing that holds the terminal 34, even when the molded part 20 is a connector housing, the waterproof plug 40 can prevent water from entering through the gap between the molded part 20 and the electric wire 30, and can prevent water from getting on the terminal 34. In addition, since the end of the sheath 33 is separated from the waterproof plug 40 and the retainer 50, it is easy to provide the molded part 20 at the end of the electric wire 30 with the electric wire 30 passed through the waterproof plug 40 and the retainer 50.

[Embodiment 2]
A wiring member according to embodiment 2 will be described. Fig. 4 is a plan view showing a wiring member 110 according to embodiment 2. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 4. Fig. 6 is an exploded perspective view showing the wiring member 110. In the description of this embodiment, components similar to those described so far are given the same reference numerals and descriptions thereof will be omitted.

In the wiring member 110, the shapes of the molded part 120, the waterproof plug 140, and the retainer 150 are different from the shapes of the molded part 20, the waterproof plug 40, and the retainer 50.

The molded part 120 further includes a tubular part 26 in addition to the main body part 21 and the locking receiving part 25. The tubular part 26 protrudes from the rear surface 23 of the main body part 21 in the extension direction of the electric wire 30 to cover the outer periphery of the electric wire 30. The tubular part 26 has a first tubular part 27 and a second tubular part 28. The first tubular part 27 protrudes from the rear surface 23 of the main body part 21. The second tubular part 28 protrudes from the tip of the first tubular part 27. The electric wire 30 protrudes from the tip surface of the second tubular part 28. The annular boundary line 24 is provided on the tip surface of the second tubular part 28. The first tubular part 27 is thicker than the second tubular part 28. The first tubular part 27 is formed in a rectangular tubular shape. Here, the cross section of the first tubular part 27 is formed in a square shape. The second tubular part 28 is formed in a cylindrical shape.

Here, the locking receiving portion 25 is not provided on the main body portion 21, but on the tubular portion 26. The locking receiving portion 25 is provided on the base end portion of the tubular portion 26 (here, the first tubular portion 27). The locking receiving portion 25 is provided on each of the four sides of the first tubular portion 27.

The waterproof plug 140 is provided separately for each electric wire 30. The first contact portion 141 contacts the outer periphery of the tubular portion 26 in a watertight manner. Here, the first contact portion 141 contacts the outer periphery of the second tubular portion 28 in a watertight manner. The waterproof plug 140 is formed in a shape in which the first contact portion 141 and the second contact portion 142 are continuous in the extension direction. Here, the inner peripheral surface and the outer peripheral surface of the waterproof plug 140 are each formed in a shape in which the annular convex portion 44 and the annular concave portion 45 are alternately continuous in the axial direction. The annular convex portion 44 on the inner peripheral surface and the annular convex portion 44 on the outer peripheral surface are provided at the same position in the axial direction. The annular concave portion 45 on the inner peripheral surface and the annular concave portion 45 on the outer peripheral surface are provided at the same position in the axial direction. The annular convex portion 44 on the inner peripheral surface of the waterproof plug 140 at one axial end side portion becomes the first contact portion 141, and the annular convex portion 44 on the inner peripheral surface of the waterproof plug 140 at the other axial end side portion becomes the second contact portion 142.

The outer periphery of the tubular portion 26 is thicker than the outer periphery of the electric wire 30. In the waterproof plug 40 before being attached to the electric wire 30 and the tubular portion 26, the inner diameter of the first contact portion 141 and the inner diameter of the second contact portion 142 may be different from each other or may be the same. In the waterproof plug 140 before being attached to the electric wire 30 and the tubular portion 26, the outer diameter of the first contact portion 141 and the outer diameter of the second contact portion 142 may be different from each other or may be the same.

A separate retainer 150 is also provided for each electric wire 30. One waterproof plug 140 is housed in the holding portion 154 of one retainer 150.

The holding portion 154 has a tube portion 57 and a bottom portion 58. The tube portion 57 is formed in a cylindrical shape. The waterproof plug 140 is accommodated in the tube portion 57. Here, in the tube portion 57, the cross-sectional shape of the portion accommodating the first contact portion 141 and the cross-sectional shape of the portion accommodating the second contact portion 142 are the same shape. In the tube portion 57, the cross-sectional shape of the portion accommodating the first contact portion 141 and the cross-sectional shape of the portion accommodating the second contact portion 142 may be different from each other. For example, in the tube portion 57, the inner diameter of the portion accommodating the first contact portion 141 may be larger than the inner diameter of the portion accommodating the second contact portion 142. The inner diameter of the tube portion 57 is approximately the same as the length of one side of the square of the first tube portion 27. The outer diameter of the tube portion 57 is approximately the same as the length of the diagonal of the square of the first tube portion 27.

The bottom 58 is not provided at one end of the tube portion 57 (the end on the main body portion 21 side along the axial direction). The bottom 58 is provided at the other end of the tube portion 57. The bottom 58 narrows the opening of the tube portion 57. One insertion hole 55 is formed in the bottom 58. The electric wire 30 passes through the insertion hole 55. The opening at one end of the tube portion 57 is larger than that at the other end. The waterproof plug 40 is placed inside the tube portion 57 through the opening at one end of the tube portion 57. The waterproof plug 140 is positioned by contacting the bottom 58. The edge of the opening at one end of the tube portion 57 contacts the square corner of the first tube portion 27. This restricts the movement of the retainer 150 toward the main body portion 21.

The first contact portion 141 may or may not be compressed in the radial direction by the retainer 150. The second contact portion 142 may or may not be compressed in the radial direction by the retainer 150. When the waterproof plug 140 is compressed in the radial direction, the inner diameter of the waterproof plug 140 before compression (the inner diameter of the annular convex portion 44) is preferably smaller than the outer diameter of the electric wire 30 and the second tubular portion 28, and the outer diameter of the waterproof plug 140 before compression (the outer diameter of the annular convex portion 44) is preferably smaller than the inner diameter of the tubular portion 57. The waterproof plug 140 may or may not be compressed in the axial direction by the retainer 150. When the waterproof plug 140 is compressed in the axial direction, the axial length of the waterproof plug 140 before compression is preferably smaller than the distance between the bottom portion 58 and the tip surface of the first tubular portion 27 when the retainer 150 is fixed to the tubular portion 26.

The fixing portion 151 has four protruding pieces 52 protruding from the holding portion 154. The locking portion 53 of each of the four protruding pieces 52 locks onto a corresponding one of the locking receiving portions 25 on the four sides of the first tubular portion 27.

In the wiring member 110 configured in this manner, like the wiring member 10, the first contact portion 141 prevents water outside the first contact portion 141 from reaching the annular boundary line 24 along the outer surface of the molded portion 120. The second contact portion 142 also prevents water outside the second contact portion 142 from reaching the annular boundary line 24 along the outer surface of the electric wire 30. As a result, the waterproof plug 140 provided on the outside of the molded portion 120 prevents water from entering the annular boundary line 24, so that the waterproof plug 140 can be prevented from entering through the gap between the molded portion 120 and the electric wire 30 without using an insert part. Even when the molded portion 120 is a connector housing, the waterproof plug 140 can prevent water from entering through the gap between the molded portion 120 and the electric wire 30, and the terminal 34 can be prevented from being splashed with water. In addition, because the waterproof plug 140 and the retainer 150 are separated from the end of the sheath 33, it is easy to provide the molded part 120 at the end of the electric wire 30 with the waterproof plug 140 and the retainer 150 passing through the electric wire 30.

In addition, according to the wiring member 110, the first contact portion 141 contacts the outer periphery of the tubular portion 26. As a result, the direction in which the first contact portion 141 contacts the molded portion 120 and the direction in which the second contact portion 142 contacts the electric wire 30 are the same.

The waterproof plug 140 is further provided with a retainer 150 that maintains the contact state of the waterproof plug 140 with the molded portion 120 and the electric wire 30, and is housed in a holding portion 154. This positions the waterproof plug 140 at a predetermined position with respect to the tubular portion 26 and the electric wire 30, making it easier to maintain the appropriate contact state of the waterproof plug 140 with the electric wire 30 and the molded portion 120.

The retainer 25 is provided at the base end of the tubular portion 26, and the fixing portion 151 has a protruding piece 52 that extends from the holding portion 154 along the axial direction toward the main body portion 21, and a locking portion 53 that is provided on the protruding piece 52 and locks with the locking portion 25. This prevents the retainer 150 from becoming larger than the molded portion 120 in the radial direction of the electric wire 30.

[Additional Notes]
In the first embodiment, it has been described that one waterproof plug 40 is provided to correspond to a plurality of electric wires 30, but this is not an essential configuration. As in the second embodiment, a waterproof plug may be provided for each electric wire 30. Similarly, in the first embodiment, it has been described that one retainer 50 is provided to correspond to a plurality of electric wires 30, but this is not an essential configuration. As in the second embodiment, a retainer may be provided for each electric wire 30.

In the second embodiment, a waterproof plug 140 is provided for each electric wire 30, but this is not a required configuration. As in the first embodiment, one waterproof plug may be provided to correspond to multiple electric wires 30. Similarly, in the second embodiment, a retainer 150 is provided for each electric wire 30, but this is not a required configuration. As in the first embodiment, one retainer may be provided to correspond to multiple electric wires 30.

Although it has been described above that the number of waterproof plugs 40, 140 and the number of retainers 50, 150 are the same, this is not a required configuration. For example, one waterproof plug may be provided to correspond to multiple electric wires 30, and a retainer may be provided for each electric wire 30. For example, a waterproof plug may be provided for each electric wire 30, and one retainer may be provided to correspond to multiple electric wires 30.

Up to this point, the wiring members 10, 110 have been described as including the retainers 50, 150, but this is not a required configuration. The wiring members do not have to include a retainer.

Up to this point, the waterproof plugs 40, 140 have been described as having the first contact portion 41, 141 and the second contact portion 42, 142 in a single member, but this is not a required configuration. A member including the first contact portion 41, 141 and a member including the second contact portion 42, 142 may be provided separately.

Up to this point, the molded parts 20, 120 have been described as being provided at the ends of the electric wires 30 and including a portion that serves as a connector housing, but this is not a required configuration. The molded parts may be provided at the branching points of multiple electric wires 30 and may maintain the extension direction of each electric wire 30.

Although it has been described above that the second section of the electric wire 30 is provided with a sheath 33, this is not a required configuration. The second section of the electric wire 30 does not necessarily need to be provided with a sheath 33.

The configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually inconsistent.

10, 110 Wiring member 20, 120 Molded portion 21 Main body portion 22 Connection port 23 Rear surface 24 Annular boundary line 25 Locking receiving portion 26 Cylindrical portion 27 First cylindrical portion 28 Second cylindrical portion 30 Electric wire 31 Core wire 32 Coating layer 33 Sheath 34 Terminal 40, 140 Waterproof plug 41, 141 First contact portion 42, 142 Second contact portion 43 Through hole 44 Annular protrusion 45 Annular recess 50, 150 Retainer 51, 151 Fixing portion 52 Projecting piece 53 Locking portion 54, 154 Holding portion 55 Insertion hole 56 Positioning recess 57 Cylindrical portion 58 Bottom portion

Claims (8)

A molded portion;
an electric wire including a first section covered by the molded portion and a second section connected to the first section and extending outside the molded portion;
a waterproof plug provided on the outside of the molded portion and covering an annular boundary line that is a boundary between the electric wire and the outer surface of the molded portion;
Equipped with
The waterproof plug is a wiring member including a first contact portion that contacts the outer surface of the molded portion in a watertight manner on the outer peripheral side of the annular boundary line, and a second contact portion that contacts the outer peripheral portion of the electric wire in a watertight manner in the second section. The wiring member according to claim 1 ,
The first contact portion and the outer surface are aligned along an extending direction of the electric wire. The wiring member according to claim 2,
a retainer that maintains a contact state of the waterproof plug with the molded portion and the electric wire;
the retainer includes a fixing portion for fixing to the molded portion and a holding portion for holding the waterproof plug,
The first contact portion is pressed against the molded portion in the extending direction by the retainer. The wiring member according to claim 2 or 3,
A plurality of the electric wires are provided,
A plurality of through holes are formed in the plate-shaped waterproof plug,
The electric wire passes through each of the plurality of through holes,
The wiring member, wherein an inner circumferential surface of each of the plurality of through holes serves as the second contact portion. The wiring member according to claim 1 ,
the molded portion includes a main body portion and a tubular portion protruding from the main body portion in an extending direction of the electric wire to cover an outer periphery of the electric wire,
The first contact portion is in contact with an outer periphery of the cylindrical portion. The wiring member according to claim 5 ,
a retainer that maintains a contact state of the waterproof plug with the molded portion and the electric wire;
the retainer includes a fixing portion for fixing to the molded portion and a holding portion for holding the waterproof plug,
The waterproof plug is housed in the holding portion. The wiring member according to claim 6,
A lock receiving portion is provided at a base end of the cylindrical portion,
The fixing portion is a wiring member having a protruding piece extending from the holding portion toward the main body portion along the extension direction, and a locking portion provided on the protruding piece and locking with the lock receiving portion. The wiring member according to claim 3 or 6,
A terminal is provided at an end of the first section of the electric wire,
The second section of the wire is provided with a sheath;
the molded portion includes a portion that serves as a connector housing for holding the terminals,
A wiring member, wherein an end of the sheath is spaced apart from the waterproof plug and the retainer along the extending direction.

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