JP5412696B2 - Shielded wire harness - Google Patents

Description

The present invention relates to a shield wire harnessing scan, in particular, possible to prevent a decrease in shielding performance relates to the shield wire harnessing scan which can be efficiently manufactured.

  Conventionally, in an inverter device mounted on various vehicles such as an electric vehicle (EV) and a hybrid vehicle (HEV), other electric devices such as a motor and a battery are insulated. It is electrically connected via the electric wire side terminal of the electric wire. In this insulated wire connection structure, the wire side terminal of the insulated wire is attached to the mounting hole formed in the shield case that accommodates the inverter device via the shield shell, so that the wire side terminal of the insulated wire and The inverter side terminal of the inverter device is electrically connected.

  In this insulated wire, since the terminal part of the insulated wire and the wire side terminal are electrically connected, the wire side terminal is arranged in a line so as to be separated from each other for avoiding a short circuit. For this reason, it is necessary to arrange in the state which extended the edge part of the insulated wire in the fan shape.

  In addition, since this insulated wire often becomes a propagation path of electrical noise generated from an inverter device or the like, a shield structure that prevents external leakage of electrical noise propagating to the outside through the insulated wire is required. As a measure for shielding an insulated wire, for example, a braided wire that is formed of a braided wire in which fine metal wires are knitted in a mesh shape and can be flexibly deformed is frequently used as a shield member (for example, see Patent Document 1).

  The conventional shield member described in Patent Document 1 performs a collective shield process by inserting three insulated wires into a braided conductor. For example, the braided conductor is disposed in a metal pipe such as an aluminum pipe attached to the vehicle body to protect the insulated wire, or a metal pipe serving as a routing route that requires flexibility as an insulated wire and It is placed between connectors.

  This conventional shield member is composed of a cylindrical intermediate shield member and a cylindrical terminal shield member having a diameter larger than that of the intermediate shield member. The end portions of these shield members are connected to each other by two connecting rings. They are integrated in series by being clamped and fixed between them. The middle portion of the three insulated wires is collectively surrounded by the intermediate shield member in a bundled state, and the end portions of the three insulated wires are collectively surrounded by the terminal shield member in a fan-shaped state. Is done.

  This conventional shield member is attached to a shield case having conductivity through a shield shell made of a metal material. This shield shell is composed of an oval cylindrical portion and a plate-shaped flange portion projecting outward from the peripheral edge of the opening of the cylindrical portion. The terminal part of the terminal shield member of the braided conductor is attached to the outer peripheral surface of the cylindrical part of the shield shell, and the flange part of the shield shell is attached to the shield case.

According to such a conventional shield member, since the diameter of the end shield member of the braided conductor is formed large, even if the ends of the three insulated wires are extended in a fan shape, There is no need to expand the terminal shield member. Therefore, a large gap is not generated between the fine metal wires of the braided conductor, and the shield function can be prevented from being lowered.
JP 2004-178913 A

  By the way, the conventional shield member described in the said patent document 1 has a structure which sets the diameter dimension of the terminal shield member of a braided conductor according to the number of insulated wires. That is, this conventional shield member has a structure that can be adopted only for a set number of insulated wires.

  However, according to such a conventional shield member, the diameter of the terminal shield member of the braided conductor varies with the number of insulated wires to be routed, so the diameter dimension of the terminal shield member of the braided conductor must be changed. I will have to. Therefore, when the number of insulated wires increases from the set number of insulated wires, a terminal shield member of a braided conductor having a diameter corresponding to the number of insulated wires is used for each set number of insulated wires. Therefore, there is a problem that the braided conductor lacks versatility corresponding to a plurality of insulated wires.

  Moreover, this conventional shield member has attached the terminal part of the terminal shield member of a braided conductor to the outer peripheral surface of the cylinder part of a shield shell. Therefore, the size of the terminal shield member of the braided conductor must be set in accordance with the diameter (size) of the cylindrical portion of the shield shell. That is, when the terminal shield member of the braided conductor is attached to the outer peripheral surface of the cylindrical portion of the shield shell in a fan-shaped state, the braid of the terminal shield member is stretched at and around the cylindrical portion of the shield shell, and the braided metal Since a large gap is generated between the thin wires, the density of the braid becomes coarse. As a result, the shielding function is greatly deteriorated.

  However, in the technique described in Patent Document 1, the shield function is not deteriorated when a large gap is generated between the fine metal wires of the braid by arranging the terminal shield member of the braided conductor in a fan shape and arranging it. No special consideration is given to prevent this.

  Further, this conventional shield member uses a cylindrical terminal shield member having a diameter larger than that of the cylindrical intermediate shield member as a braided conductor. Therefore, the terminal portions of the two braided conductors composed of the cylindrical intermediate shield member and the cylindrical terminal shield member must be connected by being clamped and fixed between the two connection rings. In addition, this conventional shield member is configured to connect two braided conductors having high flexibility made of braided wires in which fine metal wires are knitted in a mesh shape. Therefore, when connecting these braided conductors, while preventing the braided conductors from shifting or rotating in any of the vertical and horizontal directions, the mutual positional relationship of the braided conductors, etc. The assembly must be adjusted.

  With such a conventional shield member, it takes a lot of work to connect the braided conductor, and a considerable amount of time and labor are consumed, which tends to increase the number of steps for connecting the braided conductor, and has a stable shield structure. There was a problem that it was difficult to obtain.

Therefore, the present invention has been made to solve the above-described conventional problems, and its specific purpose is to have a simple structure and to be versatile and to prevent a decrease in shielding performance. and enabling, furthermore, without restricting relative displacement in all directions, it is to provide a shielded wire harnessing scan which made it possible to stably manufacture easily and efficiently shielding structure.

[1] The present invention provides a plurality of insulated wires, a shield connector for connecting end portions of the plurality of insulated wires in a divergent state, and a cylindrical shield that collectively covers the periphery of the plurality of insulated wires. A first braided conductor that is formed of a braided wire that is formed by inserting the plurality of insulated wires and braiding metal strands into a mesh shape; and the first shield conductor braided wire wherein the metal strands brewing covering said first braided conductor by at the site to be attached to the outer peripheral surface of the shield connector folding said first braided conductor in the longitudinal direction of the braided conductor is braided in a mesh-like And having a multilayer structure composed at least from a cylindrical second braided conductor, and having a shield pipe that accommodates the exposed end portions of the plurality of insulated wires, The first braided conductor is The ends of the plurality of insulated wires exposed from the shield pipe are covered over the entire length in the longitudinal direction, and the second braided conductor covers the ends of the plurality of insulated wires exposed from the shield pipe. The shield wire harness is characterized in that it covers the entire length in the longitudinal direction and is fixed to the outer periphery of the shield pipe .
[ 2 ] In the invention described in [1] above, the first and second braided conductors are flexible and extendable.
[ 3 ] In the invention described in [1] or [2] , a conductive material is interposed between the first braided conductor and the second braided conductor. It is said.
[ 4 ] In the invention described in [ 3 ] above, the conductive material is made of a conductive adhesive tape, and the conductive adhesive tape is spirally wound along the longitudinal direction of the first braided conductor. The feature is to become.
[5] In the invention described in any one of [1] to [4], pre-Symbol first braided conductor is clamped by the first connecting ring to the outer peripheral surface of the shield connector, the first The second braided conductor is characterized by being fastened and fixed to the outer peripheral surface of the shield pipe by a second connection ring.

  Even if the braided conductor is connected to the outer peripheral surface of the shield connector by elastically expanding the mesh between the braided conductors of the braided conductor on the outer peripheral surface of the shield connector, for example, the present invention Since the gap surrounded by the braided wires that are inclined and cross each other can be folded and overlapped with the metal thin wires of the two-layer braided conductor, the braided density of the braided conductor can be made dense. . As a result, a braided conductor having a simple structure and excellent versatility corresponding to a plurality of insulated wires can be obtained, and a decrease in shield performance due to a decrease in the braid density can be prevented.

  Furthermore, the present invention can be manufactured inexpensively with a small number of assembled parts, and the braided conductor can be stably connected without restricting the relative displacement in any direction, thereby simplifying the shield wire harness. And it becomes possible to obtain efficiently.

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is an exploded perspective view schematically showing an external configuration of a shielded wire harness having shielding performance, which is a typical first embodiment of the present invention, and FIG. 2 is a connection of the shielded wire harness of FIG. FIG. 3 is a partial cross-sectional enlarged view showing the structure, and FIG. 3 is a perspective view showing a state where the shield wire harness of FIG. 1 is assembled.

(Configuration of shield wire harness)
In these figures, the code | symbol 1 has shown the principal part of the shield wire harness provided with the shielding performance which concerns on 1st Embodiment. This type of shielded wire harness 1 is used as a means for connecting electrical devices (not shown) such as motors and inverter devices mounted on various vehicles such as HEVs and EVs. A part of the electric wiring system is constituted by various electric parts such as the shield connector 3 connected to the second and second terminals.

  In the first embodiment, although not particularly limited, the three insulated wires 2 are provided between a power motor (not shown) and an inverter device (not shown) that operates the motor. It is arranged in the range of the routing route. The inverter device is also housed in a shield case (not shown), and three plate-like terminal fittings (bus bars) fixed to the inverter device are opposed to the connector mounting holes formed in the shield case. They are arranged in a line. The shield connector 3 for electrically connecting the three insulated wires 2 to the terminal fitting of the inverter device is mounted in the connector mounting hole of the shield case.

  As shown in FIGS. 1 and 2, the basic configuration of the shield wire harness 1 according to the first embodiment includes three insulated wires 2 and a shield connector 3 that connects the terminal portions of these insulated wires 2. And a braided conductor 4 which is a cylindrical shield member that shields electromagnetic waves. The shield wire harness 1 can further include, for example, a shield pipe 5 that is a shield member that accommodates the end portions of the three insulated wires 2 and the end portions of the braided conductor 4 in an exposed state.

(Configuration of insulated wire)
As shown in FIG. 2, the insulated wire 2 is constituted by a core wire made of a single core wire or a stranded wire and an insulating coating covering the outer periphery of the core wire, and is made of an electric wire having no shield layer. A terminal fitting 6 that is a female terminal composed of a rectangular tube portion elongated in the front-rear direction is fixed to the end portion of the insulated wire 2 so as to be conductive by crimping. The terminal fitting 6 is connected to the shield connector 3.

(Configuration of shield connector)
As shown in FIGS. 1 and 2, the shield connector 3 includes a first shield connector 7 on the electric wire side connected to the three insulated wires 2 and a second on the equipment side connected to the bus bar of the inverter device. The shield connector 9 is configured to be freely fitted and detached.

(Configuration of the first shield connector)
As shown in FIGS. 1 and 2, the first shield connector 7 includes a first outer housing 71 and a first inner housing 72. The first outer housing 71 includes a fitting cylinder portion 73 having a horizontally long rectangular tube shape to be fitted to the second shield connector 9 of the counterpart, and a step portion smaller than the outer dimension of the fitting cylinder portion 73. And a hood portion 74 that protrudes on the same axis, and is formed by aluminum die casting.

  As shown in FIG. 2, an accommodating portion 75 is formed inside the fitting cylinder portion 73 of the first outer housing 71 via a step portion larger than the inner shape dimension of the hood portion 74. A first inner housing 72 is fitted inside the accommodating portion 75. The first inner housing 72 is made of a synthetic resin material such as polybutylene terephthalate (PBT), and has a vertically long rectangular tube shape that is formed through the front and rear. Three terminal fittings 6, 6, and 6 are individually accommodated in the first inner housing 72.

  As shown in FIG. 2, a waterproof packing 76 is fitted on the outer peripheral surface of the accommodating portion 75 of the first outer housing 71. The waterproof packing 76 provides waterproofing between the first shield connector 7 and the second shield connector 9. A cylindrical wire seal 77 made of a silicone rubber material is inserted into the inside of one hood portion 74. The wire seal 77 is supported by a tail plate 78 made of a synthetic resin material (PBT) or the like so as not to drop out from the first outer housing 71. The space between the insulated wire 2 and the first shield connector 7 is waterproofed by the wire seal 77.

  As shown in FIGS. 1 to 3, support shafts 79 are formed to project from the left and right outer surfaces of the fitting cylinder portion 75 of the first outer housing 71. A lever 8 that rotates about the support shaft 79 as a rotation center is attached to the fitting cylinder portion 75. The lever 8 has a gate shape having arm portions 82 on both the left and right sides of the plate member 81. A cam groove 83 is formed in the arm portion 82. The hood portion 74 of the first outer housing 71 is provided with a connector position assurance member 10 (CPA: Connector Position Assurance) that holds the second shield connector 9 in a locked state.

(Configuration of second shield connector)
As shown in FIGS. 1 to 3, the second shield connector 9 of the other party is a second outer housing 91 made of aluminum die cast and a second made of synthetic resin (PBT), like the first shield connector 7. The inner housing 92 is configured. The second outer housing 91 has a rectangular cylindrical portion that is long horizontally. A flange portion 94 projecting outward is formed on the outer peripheral surface on the front side of the cylindrical portion 93. The cylinder part 93 is arrange | positioned so that conduction | electrical_connection is possible to the connector attachment hole of the shield case which accommodates the inverter apparatus which is not shown in figure. The flange portion 94 is attached to the outer surface wall of the shield case with bolts. Cam followers 95 that can be engaged with the cam grooves 83 are formed on both left and right side surfaces on the rear side of the cylindrical portion 93 so as to protrude. The cam follower 95 has a pin shape.

  As shown in FIGS. 1 to 3, a second inner housing 92 having a vertically long rectangular tube shape is fitted inside the second outer housing 91. In this second inner housing 92, three terminal fittings (bus bars) 96, 96, 96 which are male terminals penetrating in the front-rear direction are individually accommodated. The terminal fitting 96 is made of an elongated metal plate made of a conductive material. An exposed front end portion of the terminal fitting 96 is connected to a bus bar of an inverter device (not shown). The rear end portion of the terminal fitting 96 is electrically connected to the terminal fitting 6 fixed to the terminal portions of the three insulated wires 2.

(Connection of first shield connector and second shield connector)
When connecting the first shield connector 7 and the second shield connector 9, as shown in FIGS. 1 and 3, both the first shield connector 7 and the second shield connector 9 are brought close to each other. When the lever 8 of the one shield connector 7 is rotated, the cam follower 95 enters the inlet of the cam groove 83. When the lever 8 of the first shield connector 7 is rotated in the fitting direction after the cam follower 95 enters the cam groove 83, the first shield connector 95 is engaged by the cam action by the engagement of the cam follower 95 and the cam groove 83. Both the shield connector 3 of 7 and the second shield connector 9 are attracted and fitted to each other. When these shield connectors 7 and 9 are fitted, the terminal fitting 96 of the second shield connector 9 individually enters the first inner housing 72 of the first shield connector 7 as shown in FIG. . Thereby, the terminal metal fitting 96 of the 2nd shield connector 9 and the terminal metal fitting 6 of the insulated wire 2 are connected so that conduction | electrical_connection is possible.

  As shown in FIG. 3, the first shield connector 7 and the second shield connector 9 are simply and easily connected by rotating the lever 8 of the first shield connector 7 in the fitting direction. can do. After rotating the lever 8 in the fitting direction, the CPA 10 is inserted into the hood portion 74 of the first outer housing 71, so that half-fitting can be prevented and the lever 8 can be locked. . The configurations and forms of the first and second shield connectors 7 and 9 exemplify one component of the shield wire harness 1 and are not limited to the above configuration example. Of course, the number and connection method of the connection terminals of the shield connector 3 are not particularly limited.

(Configuration of shield member)
As shown in FIGS. 1 to 3, the most important characteristic part of the first embodiment is the structure and arrangement of the tubular braided conductor 4 that is the shield member of the shield wire harness 1. is there. In the illustrated example, a cylindrical braided conductor 4 that collectively surrounds three insulated wires 2 is fixed to the shield connector 3 by a first connection ring 11 so as to be conductive. The braided conductor 4 is not particularly limited, but is a cylindrical shape in which fine wires made of a conductive metal material such as a copper-nickel alloy are knitted into a mesh by inclining left and right with respect to the longitudinal direction and crossing each other. It consists of a braided conductor and has flexibility, stretchability, elasticity and flexibility.

  As shown in FIGS. 1 to 3, the braided conductor 4 crosses one thin wire made of a metal material, and then crosses with every other thin wire so as to dive the next one thin wire. Yes. While repeating this, each thin line is knitted alternately over the front and back surfaces in the longitudinal direction. The braided conductor 4 collectively shields the three insulated wires 2 by covering the three insulated wires 2 together.

  As shown in FIG. 2, it is important that the braided conductor 4 is formed in a multilayer structure including at least a cylindrical first braided conductor 41 and a cylindrical second braided conductor 42. The first braided conductor 41 is inserted through the three insulated wires 2 in a bundled state. One second braided conductor 42 is folded and covered in the longitudinal direction of the first braided conductor 41 at a portion attached to the outer peripheral surface of the first shield connector 7 of the first braided conductor 41. The braided conductor 4 has an outer dimension that can cover the first shield connector 7 having an outer dimension different from the outer dimension of the braided conductor 4 by elastically expanding the mesh between the braided wires. Yes.

  As another example of the shield member of the shield wire harness 1, as shown in FIGS. 1 and 2, for example, a shield pipe 5 that accommodates the end portions of the three insulated wires 2 in an exposed state can be used. . Examples of the material of the shield pipe 5 include aluminum alloy, stainless steel, copper, and copper alloy. In the first embodiment, the shield pipe 5 is made of an aluminum alloy aluminum pipe. The shield pipe 5 is attached to a vehicle body (not shown) and has a shield function, an insulated wire protection function, and a braided conductor protection function. When connecting the inverter device and the insulated wire 2, the braided conductor 4 led out from the opening end of the shield pipe 5 is freely routed, and the first shield connector 7 and the second shield connector 9 are used. Can be connected to the inverter device.

  When performing the collective shielding process for the three insulated wires 2, by providing in advance a sufficient braided conductor length that can be folded back from the first shield connector 7 to the shield pipe 5, the first shield connector 7 The first connecting ring 11 is fastened and fixed in a state where a part of the first braided conductor 41 is covered with a predetermined length on the outer peripheral surface. Thereby, the 1st shield connector 7 and the 1st braided conductor 41 are conduct | electrically_connected, and a batch shield process can be performed.

  When connecting the second braided conductor 42 folded back from a predetermined length of the first braided conductor 41 and the shield pipe 5, the second end of the shield pipe 5 is connected to the opening end as shown in FIG. 2. The second connecting ring 12 is fastened and fixed with the end of the braided conductor 42 covered. Thereby, the braided conductor 4 can form a two-layer structure including the cylindrical first braided conductor 41 and the cylindrical second braided conductor 42. With such a configuration, the braided conductor 4 is stretched and the braided conductor diameter is increased, but between the braided wires that are inclined to the left and right with respect to the longitudinal direction of the first braided conductor 41 and intersect with each other. Since the enclosed gap is covered with the fine metal wires of the second braided conductor 42, the mesh density of the braided conductor 4 can be made dense. As a result, it is possible to prevent a decrease in shielding performance due to a decrease in the density of the braid and to maintain the shielding effect over a long period of time.

(Method for manufacturing shielded wire harness)
In manufacturing the shielded wire harness 1 configured as described above, first, the three insulated wires 2 and the braided conductor 4 are exposed in the required length for three wires. The insulated wire 2 and the single braided conductor 4 are accommodated inside the shield pipe 5. Next, the terminal fitting 6 is crimped to each end portion of the three insulated wires 2 led out from the open end of the shield pipe 5.

  Next, the terminal fittings 6 are electrically connected to the first shield connector 7 in a state where the terminal fittings 6 are expanded in a divergent shape. Next, the braided conductor 4 led out from the opening end of the shield pipe 5 collectively surrounds the exposed end portions of the three insulated wires 2, and the predetermined length of the braided conductor 4 is set to the first length. The first braided conductor 41 is formed by elastically expanding and inserting into the outer peripheral surface of the shield connector 7. Subsequently, a portion having a predetermined length of the first braided conductor 41 is fastened and fixed to the outer peripheral surface of the first shield connector 7 by the first connection ring 11.

  Next, the second braided conductor 42 is formed by folding back the remaining portion of the braided conductor 4 except the first braided conductor 41 in the longitudinal direction of the first braided conductor 41. Subsequently, the second braided conductor 42 is fastened and fixed to the outer peripheral surface of the shield pipe 5 by the second connection ring 12. Next, the first shield connector 7 and the second shield connector 9 are electrically connected. Thereby, the shield wire harness 1 which has the shield function which prevents the external leakage of the electrical noise which propagates outside via the insulated wire 2 is obtained effectively. And according to a regular method, this shield wire harness 1 is fixed to a vehicle body.

(Effects of the first embodiment)
According to the conventional shield member, when the braided conductor is attached to the outer peripheral surface of the shield connector in a fan-shaped state, the braid of the braided conductor is stretched particularly in the shield connector and its vicinity, and a large gap is formed between the metal thin wires of the braid. As a result, the density of the braid becomes coarse. As a result, the shielding function is greatly deteriorated. On the other hand, according to the shield wire harness 1 which is this 1st Embodiment, the following various effects are acquired.
(1) The shield member according to the first embodiment connects the braided conductor 4 to the outer peripheral surface of the shield connector 3 by elastically expanding the mesh between the braided wires of the braided conductor 4 on the outer peripheral surface of the shield connector 3. Even in this case, the gap surrounded by the braided wires that are inclined to the left and right with respect to the longitudinal direction of the braided conductor 4 and intersect with each other is folded back and overlapped by the thin metal wires of the two layers of braided conductors 41 and 42. Therefore, the braid density of the braided conductor 4 can be made dense. As a result, the braided conductor 4 having a simple structure and excellent versatility corresponding to the plurality of insulated wires 2 can be obtained, and a decrease in shield performance due to a decrease in the braid density can be prevented.
(2) Since the single braided conductor 4 is folded and overlapped between the first shield connector 7 and the shield pipe 5, it is not necessary to regulate the relative displacement of the braided conductor 4 in all directions. The shield wire harness 1 can be obtained easily and efficiently.
(3) By combining the shield members 4 and 5 and the shield connectors 7 and 9 with a small number of assembled parts, it can be easily manufactured and can be manufactured at low cost, and the braided conductor 4 is connected. The shielded wire harness 1 can be obtained easily.

[Second Embodiment]
FIG. 4 shows a second embodiment of the shield wire harness, and is a partially enlarged cross-sectional view showing the connection structure of the shield wire harness. In FIG. 4, the same member names and reference numerals are assigned to substantially the same members as those in the first embodiment. Therefore, the detailed description regarding these members is omitted.

(Configuration of shield member)
Even in the shielded wire harness 1 according to the second embodiment, there is no difference in the basic configuration from the shielded wire harness according to the first embodiment. In FIG. 4, the main difference from the first embodiment is that in the first embodiment, the two-layer braided conductors 41 and 42 are folded and overlapped. In the second embodiment, a conductive material is interposed between the two layers of the braided conductors 41 and 42 which are folded and overlapped.

  The conductive material may be a metal material having good conductivity. For example, the shield layer is formed by covering the outer peripheral surface of the first braided conductor 41 with a conductive adhesive tape such as aluminum and copper or a metal foil. Can be formed. When the metal foil is used, for example, the outer peripheral surface of the first braided conductor 41 can be covered by welding the metal foil to the outer peripheral surface of the first braided conductor 41 with solder.

  In the second embodiment, the copper tape 13, which is a conductive material, is spiraled along the longitudinal direction of the first braided conductor 41 in a region where the second braided conductor 42 of the first braided conductor 41 is to be formed. In this configuration, the three braided conductors 42 are folded back on the outer peripheral surface of the copper tape 13 and the three insulated wires 2 are collectively shielded.

(Method for manufacturing shielded wire harness)
The shield wire harness 1 according to the second embodiment configured as described above can be efficiently manufactured using the manufacturing method according to the first embodiment. After the first braided conductor 41 is fastened and fixed to the outer peripheral surface of the first shield connector 7 by the first connection ring 11, the first braided conductor 41 in the region where the second braided conductor 42 is to be formed is copper-taped. 13 is wrapped in a spiral. Thereafter, the remaining braided conductor 4 is folded back in the longitudinal direction of the first braided conductor 41 to cover the second braided conductor 42.

(Effect of the second embodiment)
According to the shielded wire harness 1 according to the second embodiment, the following various effects can be obtained in addition to the effects of the first embodiment.
(1) The first braided conductor 41 can be reliably included by the copper tape 13 interposed between the first braided conductor 41 and the second braided conductor 42. Even if the braid density of the first braided conductor 41 becomes coarse, a shielding effect can be obtained.
(2) Since the copper tape 13 is covered with the second braided conductor 42, peeling from the first braided conductor 41 or falling off from the first braided conductor 41 can be prevented. It is possible to prevent a decrease in shielding performance due to a decrease in the density of the braid and to maintain the shielding effect over a long period of time.

  As is clear from the above description, the shielded wire harness and the manufacturing method thereof according to the present invention are not limited to the above embodiments. The present invention can, of course, effectively use various configurations such as the following other embodiments (1) to (4), and variously within the scope described in each claim. Design changes are possible.

[Other embodiments]
(1) In the first and second embodiments, the first braided conductor 41 is accommodated in the shield pipe 5 and the first braided conductor 41 and the first shield connector 7 are electrically connected. However, the present invention is not limited to this. For example, the first and second braided conductors 41 are provided only between the opening end of the shield pipe 5 and the first shield connector 7. , 42 can sufficiently achieve the initial object of the present invention.
(2) In the first and second embodiments, the shield structure has a two-layer structure in which the long tubular braided conductor 4 is folded only once. It is not limited to. For example, the present invention can be a shield structure having a three-layer structure folded three times, or a shield structure having a multilayer structure folded four or more times. With this configuration, the density of the braid can be further increased, so that the shielding effect can be sufficiently exhibited.
(3) According to the first and second embodiments, it is composed of a tubular braided conductor in which fine wires made of a metal material are knitted in a mesh shape, but the present invention is not limited to this. Absent. In the present invention, for example, a flat braided conductor in which fine wires made of a metal material are knitted in a mesh shape, and the ends of the braided conductor are overlapped to form a cylindrical shape.
(4) According to the first and second embodiments, the first and second shield connectors 7 and 9 having a housing formed of a conductive material such as aluminum are used. The invention is not limited to this. In the present invention, the braided conductor 4 and the shield shell are brought into contact with each other by disposing a conductive shield shell in the housing of the first shield connector 7 formed of an insulating material made of, for example, a synthetic resin material (PBT or the like). The general structure to be made may be sufficient and the shield effect can fully be exhibited.

It is a disassembled perspective view which shows roughly the external appearance structure of the shield wire harness provided with the shielding performance which is typical 1st Embodiment of this invention. It is a fragmentary sectional enlarged view which shows the connection structure of the shield wire harness of FIG. It is a perspective view which shows the assembly state of the shield wire harness of FIG. It is a fragmentary sectional enlarged view which shows the connection structure of the shield wire harness provided with the shielding performance which is 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shield wire harness 2 Insulated wire 3 Shield connector 4 Braided conductor 5 Shield pipe 6, 96 Terminal metal fitting 7 First shield connector 8 Lever 9 Second shield connector 10 Connector position assurance member 11 First connection ring 12 Second Connection ring 13 Copper tape 41 First braided conductor 42 Second braided conductor 71 First outer housing 72 First inner housing 73 Housing part 74 Hood part 75 Fitting cylinder part 76 Waterproof packing 77 Wire seal 78 Tail plate 79 Support shaft 81 Plate member 82 Arm portion 83 Cam groove 91 Second outer housing 92 Second inner housing 93 Tube portion 94 Flange portion 95 Cam follower

Claims (5)

Multiple insulated wires;
A shield connector for connecting the terminal portions of the plurality of insulated wires in a divergent state;
A cylindrical shield member that collectively covers the periphery of the plurality of insulated wires;
The shield member is
A cylindrical first braided conductor constituted by braided wires inserted through the plurality of insulated wires and braided with metal strands, and an outer peripheral surface of the shield connector of the first braided conductor. wherein at the site to be attached first braided conductor metal wires brewing covering said first braided conductor by folding in the longitudinal direction of reticulate the knitted by braid comprising cylindrical second composed It has a multilayer structure composed at least of a braided conductor ,
Having a shield pipe that accommodates the exposed ends of the plurality of insulated wires;
The first braided conductor covers the ends of the plurality of insulated wires exposed from the shield pipe over the entire length in the longitudinal direction,
The second braided conductor covers end portions of the plurality of insulated wires exposed from the shield pipe over the entire length in the longitudinal direction thereof, and is fixed to the outer periphery of the shield pipe. .   The shielded wire harness according to claim 1, wherein the first and second braided conductors are flexible. The shield wire harness according to claim 1 or 2, wherein a conductive material is interposed between the first braided conductor and the second braided conductor. 4. The shield wire according to claim 3 , wherein the conductive material is made of a conductive adhesive tape, and the conductive adhesive tape is spirally wound along the longitudinal direction of the first braided conductor. Harness. Before SL first braided conductor is clamped by the first connecting ring to the outer peripheral surface of the shield connector,
The shield wire harness according to any one of claims 1 to 4, wherein the second braided conductor is fastened and fixed to the outer peripheral surface of the shield pipe by a second connection ring.

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