JP2016219104A - Conductive member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conductive member which connects a cylindrical conductor with a flexible conductor.SOLUTION: A conductive member is arranged in a vehicle and has: a cylindrical pipe member 20 capable of retaining a shape; a flexible core wire 31; a conductive connection member 70 which connects one end part 31A of the core wire 31 with an end part of the pipe member 20; and a connector terminal connected to an end part of the core wire 31 located at a side which is opposite to the pipe member 20. The connection member 70 includes: a body part 71 having a recessed part 71A which houses the one end part 31A of the core wire 31; and an insertion part 73 which protrudes from the body part 71 to the pipe member 20 side and is inserted into the pipe member 20.SELECTED DRAWING: Figure 4

Description

  The technology disclosed by this specification is related with an electrically-conductive member.

  Conventionally, as a wire harness routed in a vehicle, for example, the one described in Patent Document 1 below is known. The wire harness of Patent Document 1 includes a pipe as an exterior member. The shape of the conductor can be maintained by inserting the conductor through the pipe.

JP 2014-82909 A

  In the above configuration, a pipe for maintaining the shape of the conductor is required when wiring in three dimensions. For this reason, the number of parts increases, and an operation for inserting a conductor into the pipe is required, resulting in an increase in manufacturing cost. For this reason, it is conceivable to use a cylindrical conductor capable of holding the shape by a three-dimensional wiring as the conductor. Thereby, it is not necessary to provide a pipe for holding the shape. Here, if the conductor is composed only of the cylindrical conductor, it cannot be bent, and there is a concern that it may be difficult to assemble to another member. For this reason, the structure which combines a cylindrical conductor and a flexible conductor which has a softness | flexibility as a conductor is considered, and the structure which connects a cylindrical conductor and a flexible conductor is calculated | required.

  The technology disclosed in this specification is a conductive member arranged in a vehicle, and is a cylindrical conductor that can hold a shape, a flexible conductor having flexibility, and one end of the flexible conductor And a connection member having conductivity, and a terminal connected to the other end portion of the flexible conductor, the connection member including the one end of the flexible conductor A contact portion that contacts the one end portion of the flexible conductor while surrounding the portion, and an insertion portion that is inserted into the cylindrical conductor.

  According to the technique disclosed by this specification, the connection member which connects a flexible conductor and a cylindrical conductor is provided. Thereby, both the conductors can be connected regardless of the dimensions of the flexible conductor and the cylindrical conductor by appropriately setting the dimensions of the contact part and the insertion part.

  The abutting portion may have a cylindrical shape, and the inner diameter of the abutting portion may be set to a value larger than the inner diameter of the cylindrical conductor. With such a configuration, one end of the flexible conductor can be inserted into the abutting portion, and one end of the flexible conductor can be compared with a configuration in which one end of the flexible conductor is directly inserted into the cylindrical conductor. The part can be easily inserted.

  Moreover, the said flexible conductor shall be comprised from the some strand. Since a plurality of strands can be surrounded by the contact portion, the strands can be reliably held. It is possible to more reliably suppress the situation where the element wire comes into contact with the other member.

  Further, the insertion portion may be provided with a locking portion that locks to a locked portion provided in the cylindrical conductor. With such a configuration, the connecting member can be more reliably fixed to the cylindrical conductor.

  According to the conductive member disclosed by this specification, a cylindrical conductor and a flexible conductor can be connected.

The figure which shows the electrically-conductive member which concerns on Embodiment 1. The figure which shows a pipe member and a covered electric wire Sectional drawing which shows the covered electric wire and pipe member before attaching to a connection member Sectional drawing which shows the covered electric wire and pipe member after attaching to a connection member The figure which shows the electrically-conductive member which concerns on Embodiment 2. Sectional drawing which shows other embodiment

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 4. In the present embodiment, as the conductive member 10, for example, one that is routed under the floor of a vehicle is illustrated. Conductive member 10 electrically connects a battery (not shown) disposed at the rear of the vehicle and a device (not shown) mounted in an engine room provided at the front of the vehicle. Is done.

  As shown in FIGS. 1 and 2, the conductive member 10 includes a pipe member 20 (cylindrical conductor), a pair of covered electric wires 30 connected to both ends in the longitudinal direction of the pipe member 20, and a covered electric wire 30. A connecting member 70 that connects the pipe member 20, a pair of connectors 40 that are respectively connected to ends of the respective covered electric wires 30 opposite to the pipe member 20, and the pipe member 20, the covered electric wire 30, and the connecting member 70. The braided wire 45 to cover, the corrugated tube 50 which covers the braided wire 45, and the rubber member 60 each provided in each edge part of the corrugated tube 50 are provided. In FIG. 2, only the connecting member 70 and the covered electric wire 30 arranged on one end side of the pipe member 20 are illustrated, but the connecting member 70 and the covered electric wire 30 are also arranged on the other end side of the pipe member 20. Has been.

  The pipe member 20 is made of a metal having excellent conductivity, and has a cylindrical shape as shown in FIG. The cylindrical pipe member 20 can be formed by, for example, rounding a metal plate. Further, as the pipe member 20, for example, a metal pipe may be used. Here, as the pipe member 20, an arbitrary metal such as aluminum, an aluminum alloy, copper, or a copper alloy can be used as necessary. Further, the pipe member 20 has a rigidity capable of holding the shape, and has a shape along the wiring path of the conductive member 10 under the floor of the vehicle. In FIG. 1, the pipe member 20 is illustrated as extending linearly. However, when the routing route has a bent shape, the bent shape may be formed along the shape. Since the pipe member 20 has a hollow shape, it is easier to bend than the solid member, and can be easily processed into a shape along the routing path.

  As shown in FIG. 4, the covered electric wire 30 includes a core wire 31 composed of a plurality of strands and an insulating coating 33 (insulating layer) that covers the core wire 31. As the core wire 31 (linear flexible conductor), any metal such as aluminum, aluminum alloy, copper, copper alloy or the like can be used as necessary, and has flexibility (flexibility) and conductivity. . At the end of the covered electric wire 30, the insulating coating 33 is peeled off and the core wire 31 is exposed. One end 31A of the core wire 31 on the pipe member 20 side is connected to a connection member 70 (details will be described later). On the other hand, the end (other end) on the connector 40 side of the core wire 31 is connected to a connector terminal 42 (terminal, broken line in FIG. 2) in the connector 40, as shown in FIG.

  As shown in FIG. 4, the connecting member 70 connects one end 31 </ b> A of the core wire 31 and one end of the pipe member 20, and has a cylindrical shape. The connection member 70 is made of a metal having excellent conductivity, and as the material thereof, for example, copper, copper alloy, aluminum, aluminum alloy, or the like can be used. Further, a plating layer (not shown) is formed on the surface of the connection member 70 by performing metal plating. Examples of the metal used for plating the connecting member 70 include tin, nickel, copper, and the like. However, the metal is not limited to these metals, and can be appropriately changed depending on the application. Note that the surface of the connection member 70 may not be plated.

  As shown in FIGS. 3 and 4, the connecting member 70 includes a main body portion 71 having a recess 71 </ b> A (accommodating portion) opened on the covered wire 30 side, an insertion portion 73 inserted into the pipe member 20, and And a connecting portion 75 that connects the main body portion 71 and the insertion portion 73. The main body portion 71, the insertion portion 73, and the connecting portion 75 each have a cylindrical shape, and are arranged so that the respective axes are coaxial.

  The main body portion 71 includes a back wall portion 71B and a cylindrical peripheral wall portion 71D that rises from the peripheral end of the back wall portion 71B to the covered electric wire 30 side (left side in FIG. 4). The recess 71A is constituted by a back wall portion 71B and a peripheral wall portion 71D. One end 31A of the core wire 31 of the covered electric wire 30 is accommodated in the recess 71A. The peripheral wall portion 71D is caulked over the entire circumference by, for example, hexagonal caulking or the like while surrounding the one end portion 31A, and is crimped to the one end portion 31A. Thereby, peripheral wall part 71D (contact part) is contact | abutted with respect to 31 A of one end parts, and the core wire 31 and the connection member 70 are connected so that conduction | electrical_connection is possible.

  The insertion portion 73 is inserted into the pipe member 20. One end of the pipe member 20 into which the insertion portion 73 is inserted is caulked over the entire circumference by, for example, hexagonal caulking, and the wall portion of the pipe member 20 is crimped to the insertion portion 73. Thereby, the outer peripheral surface of the insertion part 73 is contact | abutted with respect to 20A of inner peripheral surfaces of the pipe member 20, and the connection member 70 and the pipe member 20 are connected so that conduction | electrical_connection is possible.

  FIG. 3 is a cross-sectional view showing the connection member 70, the pipe member 20, and the covered electric wire 30 in a separated state (a state before caulking work is performed on the connection member 70 and the pipe member 20). As shown in FIG. 3, the outer diameter D1 of the insertion portion 73 is set to a value slightly smaller than the inner diameter D2 of the pipe member 20, and the outer diameter D3 of the connecting portion 75 is smaller than the inner diameter D2 of the pipe member 20. Is also set to a large value.

  Further, the outer diameter D3 of the connecting portion 75 is set to a value smaller than the outer diameter D6 of the pipe member 20. The outer diameter D4 of the core wire 31 is set to a value larger than the inner diameter D2 of the pipe member 20, and the inner diameter D5 of the peripheral wall portion 71D (the diameter of the recess 71A) is larger than the outer diameter D4 of the core wire 31. Is set in That is, the inner diameter D5 of the peripheral wall portion 71D is set to a value larger than the inner diameter D2 of the pipe member 20.

  The braided wire 45 (shield member) is formed by braiding a plurality of thin metal wires excellent in conductivity into a mesh shape, and has a flexible cylindrical shape. As shown in FIG. 2, the braided wire 45 is configured to cover the pipe member 20, the pair of covered electric wires 30, and the pair of connection members 70. As the metal strand used here, copper, copper alloy, aluminum, aluminum alloy, or the like can be used. In the present embodiment, for example, a copper alloy is used. For example, a tin plating layer (not shown) is formed on the surface of the metal wire by performing tin plating, and the oxidation of the metal wire and the generation of rust are suppressed by the tin plating layer. Such a plating layer may not be formed.

  A heat shrinkable tube 25 (insulating layer) is interposed between the braided wire 45 and the pipe member 20. The heat shrinkable tube 25 surrounds the outer peripheral surface of the pipe member 20, the outer peripheral surface of the connection member 70, and the exposed portion of the core wire 31. Note that the end of the braided wire 45 may be accommodated in the housing 41 constituting the connector 40.

  The corrugated tube 50 (exterior member) is made of synthetic resin, has a bellows shape in which peaks and valleys are alternately arranged, and has flexibility. The corrugated tube 50 surrounds the entire length of the pipe member 20, the pair of connection members 70, and a part of the pair of covered electric wires 30. The end portion of the corrugated tube 50 is disposed with a gap between the connector 40 and the gap is closed with a waterproof rubber member 60 (grommet).

  The rubber member 60 has a cylindrical shape and is configured to cover the end of the corrugated tube 50 at one end thereof. Further, the other end portion (not shown) of the rubber member 60 is accommodated in a housing 41 constituting the connector 40, for example. The other end of the rubber member 60 may cover the end of the housing 41 from the outside.

  Next, an example of a method for assembling the conductive member 10 will be described. First, each of the covered electric wires 30 to which the connector 40 is attached is connected to each end of the pipe member 20 via the connection member 70. Specifically, one end 31 </ b> A of the core wire 31 is inserted into the recess 71 </ b> A of the connection member 70, and the insertion portion 73 of the connection member 70 is inserted into the pipe member 20. In addition, when inserting the insertion part 73 in the inside of the pipe member 20, the end surface 75A of the connection part 75 contact | abuts to the end surface 20D of the pipe member 20, and positioning in an insertion direction is performed (refer FIG. 4).

  Thereafter, as shown in FIG. 4, the end portion of the pipe member 20 and the main body portion 71 of the connecting member 70 are caulked over the entire circumference using a tool or the like. Thereby, the end portion of the pipe member 20 is crimped to the insertion portion 73, and the main body portion 71 of the connection member 70 is crimped to the one end portion 31 </ b> A of the core wire 31. The outer diameter D3 of the connecting portion 75 is set to a value smaller than the outer diameter D6 of the pipe member 20. For this reason, the connection part 75 does not interfere with the tool, and the end of the pipe member 20 can be more reliably pressed with the tool.

  Subsequently, the heat-shrinkable tube 25 previously attached to the pipe member 20 is heated so as to be heat-shrinked and brought into close contact with the pipe member 20 and the pair of connecting members 70. Next, the covered wire 30, the pipe member 20, and the connection member 70 are covered with the braided wire 45. Thereafter, the braided wire 45 is covered with the corrugated tube 50, and the rubber member 60 is attached to the corrugated tube 50. Thereby, the assembly of the conductive member 10 is completed.

  Next, the effect of this embodiment will be described. According to this embodiment, the connection member 70 which connects the covered electric wire 30 (core wire 31) and the pipe member 20 is provided. Thereby, the core wire 31 and the pipe member 20 can be connected irrespective of the dimension of the core wire 31 and the pipe member 20 by setting the dimension of the recessed part 71A and the insertion part 73 suitably.

  If the core wire 31 is directly inserted into the pipe member 20 without using the connecting member 70, the core wire 31 is compressed in the radial direction if the outer diameter of the core wire 31 is larger than the inner diameter of the pipe member 20. There is a need. In this embodiment, since the connection member 70 is provided, the pipe member 20 and the core wire 31 can be connected without compressing the core wire 31.

  Further, the peripheral wall portion 71D has a cylindrical shape, and the inner diameter D5 is set to a value larger than the inner diameter D2 of the pipe member 20. With such a configuration, it is possible to easily insert the one end portion 31 </ b> A of the core wire 31 compared to the configuration in which the one end portion 31 </ b> A of the core wire 31 is inserted into the pipe member 20.

  Moreover, the core wire 31 is comprised from the some strand. Since the plurality of strands can be surrounded by the peripheral wall portion 71D, the strands can be reliably held, and the situation where the strands come into contact with other members can be more reliably suppressed.

<Embodiment 2>
Next, Embodiment 2 will be described with reference to the drawing of FIG. In this embodiment, the structure of a connection member and a pipe member is different from the said embodiment. Note that the same portions as those in the above embodiment are denoted by the same reference numerals and redundant description is omitted. In the connection member 270 of the present embodiment, a plurality of protrusions 270A are formed on the outer peripheral surface of the insertion portion 73, as shown in FIG. Correspondingly, a through hole 220 </ b> A is formed through the end of the pipe member 220. The protrusion 270A (locking portion) is inserted into the through hole 220A (locked portion). Thereby, the projection 270A is locked to the inner surface of the through hole 220A, so that the connection member 270 can be more reliably prevented from coming off from the pipe member 220.

  The outer diameter D7 of the insertion portion 73 including the protrusion 270A is set to be smaller than, for example, the inner diameter (see D8 in FIG. 5) of the pipe member 220 before caulking. Thereby, after inserting the insertion part 73 including the projection 270A into the pipe member 220, the projection 270A can be inserted into the through hole 220A by caulking the end of the pipe member 220. Note that the numbers of the through holes 220A and the protrusions 270A can be changed as appropriate. Moreover, in this embodiment, although the protrusion was illustrated as a latching | locking part and the through-hole was illustrated as a to-be-latched part, it is not limited to this. For example, it is good also as a structure which makes a to-be-latched part a recessed part and fits 270A of protrusions into a recessed part. Moreover, it is good also as a structure which provides a protrusion (locked part) in the internal peripheral surface of the pipe member 220, and fits into the recessed part (locking part) formed in the outer peripheral surface of the insertion part 73. FIG.

<Other embodiments>
The technology disclosed in this specification is not limited to the embodiments described with reference to the above description and drawings, and includes the following embodiments, for example.
(1) In the above embodiment, the cylindrical peripheral wall portion 71D is exemplified as the contact portion surrounding the one end portion 31A of the core wire 31, but the present invention is not limited to this. As shown in FIG. 6, as a contact portion, the connection member 170 may include a pair of crimping pieces 172 and 172, and the end portion 31 </ b> A of the core wire 31 may be surrounded by the pair of crimping pieces 172 and 172. Good.
(2) In the above configuration, a plurality of pipe members 20 and covered electric wires 30 may be provided, or a plurality of pipe members 20 and covered electric wires 30 may be collectively covered with a corrugated tube. In addition, when providing the several pipe member 20, it is good also as a structure which interposes a spacer between the adjacent pipe members 20, and regulates the positional relationship between the pipe members 20 with a spacer.
(3) In the said embodiment, although the connector terminal 42 accommodated in the housing 41 was illustrated as a terminal, it is not limited to this. For example, a round terminal or the like may be used as the terminal.
(4) Each connection method of the core wire 31 and the connection member 70, and the connection member 70 and the pipe member 20 is not limited to what was illustrated by the said embodiment, For example, you may use ultrasonic welding etc.
(5) In the said embodiment, although the heat-shrinkable tube 25 was illustrated as an insulating layer which covers the pipe member 20, it is not limited to this. For example, the insulating layer may be formed on the pipe member 20 by subjecting the pipe member 20 to alumite processing or painting an insulating resin.
(6) In the said embodiment, although the corrugated tube 50 was illustrated as an exterior member which has a softness | flexibility, it is not limited to this. As the exterior member, a flexible rubber tube or the like may be used.
(7) In the above embodiment, the braided wire 45 is exemplified as a flexible shield member, but the present invention is not limited to this. As the shield member, for example, a metal foil such as copper, copper alloy, aluminum, aluminum alloy may be used.
(8) In the said embodiment, although the core wire 31 of the covered electric wire 30 was illustrated as a flexible conductor, it is not limited to this. For example, a braided wire may be exemplified as the flexible conductor, and in this case, for example, a heat shrinkable tube may be used as the insulating layer covering the flexible conductor.
(9) In the above embodiment, the pipe member may be composed of three or more cylindrical portions.
(10) The shape of the pipe member 20 is not limited to a cylindrical shape. For example, the pipe member may have a rectangular tube shape.
(11) In the above embodiment, the conductive member is exemplified as one that is routed under the floor of the vehicle, but is not limited thereto. The conductive member disclosed in the present specification can be widely applied to a wiring portion that needs to maintain a shape between at least two electrical devices that are electrically connected.
(12) In the above embodiment, the pipe member is exemplified by a hollow cylindrical shape made of a metal having excellent conductivity. However, the present invention is not limited to this. The pipe member only needs to have excellent conductivity, and may be a hollow cylindrical member made of a conductive resin, for example. The pipe member may be a cylindrical member having a multilayer structure including, for example, a resin layer and a metal layer.

10: Conductive member 20, 220: Pipe member (cylindrical conductor)
31 ... Core wire (flexible conductor)
31A ... End of core wire (end of flexible conductor)
42 ... Connector terminal (terminal)
70, 270 ... connecting member 71 ... main body 71A ... recess (accommodating part)
71D ... peripheral wall part (contact part)
73 ... Insertion part 220A ... Through hole (locked part)
270A ... Projection (locking part)
D2: Inner diameter of pipe member (inner diameter of cylindrical conductor)
D5: Inner diameter of the peripheral wall 71D (inner diameter of the contact portion)

Claims (4)

A conductive member routed in a vehicle,
A cylindrical conductor having a cylindrical shape capable of holding a shape;
A flexible conductor having flexibility;
While connecting one end of the flexible conductor and one end of the cylindrical conductor, a connecting member having conductivity,
A terminal connected to the other end of the flexible conductor,
The connecting member is
An abutting portion that abuts against the one end of the flexible conductor while surrounding the one end of the flexible conductor;
An electrically conductive member comprising: an insertion portion that is inserted into the cylindrical conductor. The contact portion has a cylindrical shape,
The conductive member according to claim 1, wherein an inner diameter of the contact portion is set to a value larger than an inner diameter of the cylindrical conductor.   The conductive member according to claim 1, wherein the flexible conductor includes a plurality of strands.   The conductive member according to any one of claims 1 to 3, wherein the insertion portion is provided with a locking portion that is locked to a locked portion that is provided on the cylindrical conductor.

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