JP4836485B2 - Shield conductive path - Google Patents

Description

  The present invention relates to a shield conductive path.

Conventionally, there is one disclosed in Patent Document 1 as a shield conductive path having a shield function. This has a structure in which a plurality of non-shielded electric wires are inserted into a metal pipe, and the metal pipe has both a shielding function and an electric wire protection function.
JP 2004-171952 A

When this type of shield conductive path is used as a power circuit for an electric vehicle, depending on the type of vehicle, the route of the shield conductive path may be changed from the equipment (for example, an inverter device) provided in the engine room at the front of the vehicle body to the rear of the vehicle body. It is conceivable to reach a device (for example, a battery or a motor for driving the rear wheels) disposed in the vehicle. In such a wiring form, since the total length of the shield conductive path becomes long, a large space is required for transportation and storage, or a dead space is generated. In particular, when the shield conductive path is routed along the under floor of the vehicle body, the space efficiency is further deteriorated because the shield conductive path is bent in a three-dimensional direction in order to avoid equipment attached to the under floor.
The present invention has been completed based on the above circumstances, and an object thereof is to save space during transportation and storage.

As means for achieving the above object, the invention of claim 1 is characterized in that a plurality of flexible wires and a plurality of wires arranged so that the plurality of wires are inserted and aligned in the length direction. And a conductive flexible shield member that connects the ends of the adjacent pipes through which the plurality of electric wires are inserted, and includes at least one of the adjacent pipes. It is characterized in that it includes a protector that can be attached to the end portion so as to cover the flexible shield member .

According to a second aspect of the present invention, in the first aspect of the present invention, when the protectors are attached to the ends of the pipes, the relative displacements of the ends of the adjacent pipes are restricted by the protectors. It is characterized in that it is designed to be coupled to.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2 , the protector has a cylindrical shape surrounding the flexible shield member over the entire circumference.

The invention of claim 4 is characterized in that, in the invention described in claim 3 , the protector is constituted by combining two halves that form a substantially semi-cylindrical shape into a cylindrical shape.

<Invention of Claim 1>
Since pipes that are difficult to be bent are divided in the length direction and the ends of the pipes are connected by a flexible shield member that can be bent and deformed, the flexible shield member of the flexible shield member and the electric wire The shield conductive path can be folded by bending the enclosed portion. Thereby, a required space and dead space can be reduced in transportation and storage.

Further, when the shield conductive path is routed, the flexible shield member can be protected from the interference of foreign matters by assembling a protector at the end of the pipe.

<Invention of Claim 2 >
Since the adjacent pipes are positioned by the protector, a dedicated means for positioning the pipes becomes unnecessary.

<Invention of Claim 3 >
Since the protector has a cylindrical shape surrounding the flexible shield member over the entire circumference, the flexible shield member can be reliably protected.

<Invention of Claim 4 >
As the cylindrical protector, it is conceivable that a single part is externally fitted to the pipe, but in this case, the outer diameter of the protector is increased. On the other hand, in the present invention, the protector is formed by combining the substantially half-cylinder halves, so that the outer diameter can be reduced.

<Embodiment 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. An engine room is provided in the front part of the vehicle body Bd of the electric vehicle EV to which the shield conductive path Wa of the present embodiment is attached. In addition to the gasoline-driven engine Eg, the engine room is for driving a traveling motor. A device Iv constituting the power circuit is accommodated. A device Bt constituting a power circuit is also provided at the rear portion of the vehicle body Bd, and a shield conductive path Wa and an in-vehicle conductive path Wb are routed between the devices Iv and Bt.

  The shield conductive path Wa includes three non-shield type electric wires 10, three pipes 20 having a collective shield function and an electric wire protection function, two flexible shield members 30, and two protectors 40. In the state where the shield conductive path Wa is routed to the vehicle body Bd, the three electric wires 10 are inserted into the pipe 20 and the flexible shield member 30 so that they are collectively shielded and foreign matter. It is protected from interference. The shield conductive path Wa is routed along the floor of the vehicle body Bd, that is, along the lower surface of the floor plate Fp, and is supported by the vehicle body Bd (floor plate Fp) by a bracket (not shown).

The electric wire 10 is a form in which the outer periphery of a conductor 11 made of an aluminum alloy single core wire, a copper stranded wire, or the like is surrounded by an insulating coating 12 made of synthetic resin, and the cross-sectional shape of the electric wire 10 is that of the conductor 11 and the insulating coating 12. Both are assumed to be round. Since both the conductor 11 and the insulating coating 12 constituting the electric wire 10 have flexibility, the electric wire 10 can be bent and deformed.
The pipe 20 is made of an aluminum alloy, and the cross-sectional shape thereof is a perfect circle like the electric wire 10. The three electric wires 10 in the pipe 20 are maintained in a positional relationship so as to form a generally stacked shape (a form in which a substantially equilateral triangle is drawn when the centers of the electric wires 10 are connected). Three electric wires 10 are inserted into the pipe 20, and the three electric wires 10 are collectively shielded by the pipe 20. Further, the pipe 20 is three-dimensionally bent so as to follow a predetermined routing path in a state where the electric wire 10 is inserted. The three pipes 20 are arranged in series along the length direction, and both ends of the pipe 20 located in the center, the rear end part of the pipe 20 located on the front side, and the pipe 20 located on the rear side. A flange portion 21 that is concentric with the pipe 20 is formed integrally with the front end portion. Bolt holes 22 are formed through the flange portion 21.

  End portions of the pipes 20 adjacent to each other in the length direction are connected by a flexible shield member 30 so as to be conductive. The flexible shield member 30 is formed of a cylindrical braided wire obtained by knitting a copper alloy fine metal wire in a mesh shape, and can be freely deformed. Both end portions of the flexible shield member 30 are externally fitted to the end portions of the pipe 20 and are fixed by a caulking ring 31 so as to be conductive. The flexible shield member 30 shields the three electric wires 10 by collectively enclosing a region corresponding to the space between the adjacent pipes 20.

  The protector 40 is configured by combining a pair of halves 41 having a substantially half-cylinder shape so as to form a cylindrical shape. The material of the protector 40 may be a conductive material such as a metal or an insulating material such as a synthetic resin. However, the protector 40 may be made of a hard material that is not easily deformed even by foreign matter interference. Those are preferred. At both ends of each halved body 41, concentric, substantially semi-circular flange portions 42 are formed, and female screw holes 43 are formed through the flange portions 42.

Next, the operation of this embodiment will be described.
When the shield conductive path Wa is transported or stored, the protector 40 is not attached to the pipe 20 (the adjacent pipes 20 are not connected to each other), and the flexible shield member 30 and the electric wire 10 are kept. The region surrounded by the flexible shield member 30 is bent and deformed, so that the pipes 20 are relatively displaced. As an example, as shown in FIG. 2, by deforming the flexible shield member 30 and the electric wire 10 into a substantially semicircular arc shape, the two pipes 20 arranged in front and rear are arranged in parallel to each other. Can do. Since the length of the shield conductive path Wa folded in this way is shortened to about 1/3 as compared with the state in which the shield conductive path Wa is routed to the vehicle body Bd, the space required for transportation and storage can be reduced. Is possible.

  When routing the shield conductive path Wa along the bottom of the vehicle body Bd, the bent flexible shield member 30 and the electric wire 10 are returned to a substantially straight state, and the flexible shield member 30 is moved vertically or horizontally. A pair of halves 41 are combined to form a cylindrical protector 40 while being sandwiched between the two, and the protector 40 is disposed between adjacent pipes 20. At this time, the flange portion 42 of the half body 41 is brought into contact with the flange portion 21 of the pipe 20 in a surface contact state, and the bolt hole 22 and the female screw hole 43 are made to correspond to each other. When the bolt 50 passed through the bolt hole 22 from the pipe 20 side is screwed into the female screw hole 43 and tightened, the protector 40 is fixed to the pipe 20 and the adjacent pipes 20 are in a state in which relative displacement is restricted. In addition to being coupled in a straight line, the protector 40 surrounds the flexible shield member 30 over the entire circumference. As described above, the shield conductive path Wa is assembled into a shape along the predetermined routing path. Thereafter, the shield conductive path Wa may be fixed to the vehicle body Bd.

  Note that, at both ends of the shield conductive path Wa, both front and rear ends of each electric wire 10 are led out of the pipe 20 to form a vehicle-use conductive path Wb. The in-vehicle conductive path Wb is formed by inserting three electric wires 10 through a cylindrical braided wire (not shown) in which fine metal wires made of copper alloy are knitted in a mesh shape. The in-vehicle conductive path Wb connected to the front end of the shield conductive path Wa is routed while being bent in the engine room, and a connector (not shown) attached to the end of the in-vehicle conductive path Wb is connected to the device Iv. Is fitted. On the other hand, the in-vehicle conductive path Wb connected to the rear end portion of the shield conductive path Wa is routed while being bent in a storage chamber (not shown) of the device Bt at the rear of the vehicle body, and the end portion of the in-vehicle conductive path Wb. A connector (not shown) attached to is fitted to the device Bt. Thereby, both apparatus Iv and Bt are connected via the shield conductive path Wa and the in-vehicle conductive path Wb.

  As described above, in this embodiment, the pipe 20 that is difficult to be bent is divided in the length direction, and the ends of the pipe 20 are connected by the flexible shield member 30 that can be bent and deformed. By bending a portion of the flexible shield member 30 and the electric wire 10 that is surrounded by the flexible shield member 30, the shield conductive path Wa can be folded. Thereby, a required space and dead space can be reduced in transportation and storage.

  Further, since the flexible shield member 30 is surrounded by the protector 40 assembled to the pipe 20, the region surrounded by the flexible shield member 30 and the flexible shield member 30 in the electric wire 10 can be prevented from interference of foreign matters. Can be protected.

  Further, in the state where the protector 40 is attached to the end of the pipe 20, the ends of the adjacent pipes 20 are coupled and positioned in a state in which relative displacement is restricted by the protector 40, so that the pipe 20 is positioned. This eliminates the need for dedicated positioning means.

  In addition, as a form of the cylindrical protector, it is conceivable that a single part is externally fitted to the pipe 20, but in that case, the outer diameter of the protector is increased. On the other hand, since the protector 40 of this embodiment becomes a form which united the pair of half-split bodies 41 which make a substantially half cylinder shape, it can make an outer diameter small.

<Other embodiments>
The present invention is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) Although the case where the shield conductive path is routed outside the vehicle body has been described in the above embodiment, the present invention can also be applied to a shield conductive path routed inside the vehicle body.
(2) In the above embodiment, the protector connects the pipes linearly, but according to the present invention, the pipes may be connected diagonally by the protector.
(3) Although the protector is used in the above embodiment, a configuration in which the protector is not provided can be used as a reference example when there is no possibility that foreign matter interferes with the flexible shield member .
(4) In the above embodiment, the case where the shield conductive path is routed to the electric vehicle has been described. However, the present invention can also be applied to a shield conductive path routed other than the electric vehicle.
(5) Although the number of electric wires inserted into one pipe is three in the above embodiment, according to the present invention, the number of electric wires may be two or four or more.
(6) In the above embodiment, the flexible shield member is a braided wire. However, according to the present invention, the flexible shield member may be a metal thin cylindrical member formed into a bellows shape.
(7) In the above embodiment, the protector also serves as means for positioning the ends of the adjacent pipes. However, according to the present invention, the protector can have a positioning function.
(8) In the above embodiment, the protector is attached to both of the adjacent pipes. However, according to the present invention, the protector may be attached to only one of the adjacent pipes.
(9) In the above embodiment, the protector is cylindrical and the flexible shield member is surrounded over the entire circumference. However, according to the present invention, the protector partially covers the flexible shield member in the circumferential direction. It is good also as a form covered.
(10) In the above embodiment, the protector is formed by combining a substantially half-cylinder halved body. However, according to the present invention, the protector is a single cylindrical part and is lengthwise with respect to the pipe. These may be fitted externally with the relative displacement allowed.
(11) In the above embodiment, a waterproof packing or a seal ring may be interposed between the protector and the pipe.
(12) In the above embodiment, the cross-sectional shape of the pipe is circular. However, according to the present invention, the cross-sectional shape of the pipe may be non-circular.
(13) In the above embodiment, the cross-sectional shape of the protector is circular. However, according to the present invention, the cross-sectional shape of the protector may be non-circular.
(14) In the above embodiment, the protector may also serve as a bracket for attaching the shield conductive path to the vehicle body.
(15) In the above embodiment, the number of pipes constituting one shield conductive path is three. However, according to the present invention, the number of pipes may be two or four or more.

1 is a schematic side view showing a state in which a shield conductive path is arranged in an electric vehicle in Embodiment 1. FIG. Sectional drawing showing the state where the flexible shield member is bent Sectional view showing the state where the flexible shield member is straightened Sectional view showing the protector attached XX sectional view of FIG.

Explanation of symbols

Wa ... shield conductive path 10 ... electric wire 20 ... pipe 30 ... flexible shield member 40 ... protector 41 ... halved body

Claims (4)

A plurality of flexible wires;
A plurality of metal pipes inserted through the plurality of electric wires and arranged in a longitudinal direction; and
A conductive flexible shield member through which the plurality of electric wires are inserted and connecting ends of the adjacent pipes ;
A shield conductive path comprising a protector that can be attached to an end of at least one of the adjacent pipes so as to cover the flexible shield member . The state where the protectors are attached to the ends of the pipes, the ends of the adjacent pipes are coupled to each other in a state in which relative displacement is restricted by the protectors. The shield conductive path according to 1. 3. The shield conductive path according to claim 1 , wherein the protector has a cylindrical shape surrounding the flexible shield member over the entire circumference . 4. The shield conductive path according to claim 3, wherein the protector is constituted by combining two halves that form a substantially semi-cylindrical shape into a cylindrical shape .

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