JP6594128B2 - Wire harness - Google Patents

Description

  The present invention relates to a wire harness including a tubular-shaped exterior member and one or a plurality of conductive paths inserted and protected by the exterior member.

  A wire harness is used to electrically connect devices mounted on an automobile. The wire harness includes a tubular-shaped exterior member and one or a plurality of conductive paths accommodated in the exterior member. For example, the wire harness disclosed in Patent Document 1 is routed so as to pass under the vehicle floor of an automobile. In the wire harness, a portion corresponding to the vehicle floor is routed straight. Such a wire harness is formed long. In Patent Document 1 below, the following can be seen particularly with respect to the portion that is routed straight. That is, it can be seen that the conductive path in the exterior member is shaken by vibration during traveling.

JP 2011-254614 A

  In the above prior art, when the conductive path in the exterior member is greatly shaken by vibration during traveling, the coating of the conductive path (if the shield function is provided, the braid or metal foil outside the conductive path) is the exterior member. There is a problem that the inner surface of the tube is strongly hit and damaged.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the wire harness which can suppress the fluctuation | variation of the conductive path in an exterior member.

The wire harness of the present invention according to claim 1, which has been made to solve the above-described problem, includes a tube-shaped exterior member and one or a plurality of conductive paths that are inserted and protected by the exterior member. In the harness, the exterior member has one or a plurality of vibration suppression units that suppress playout by reducing a play rate of the conductive path at a predetermined position inside the exterior member, and the vibration suppression unit includes the tubular body. A portion of the exterior member having a shape is formed in a convex shape so that the outer surface of the tube protrudes outwardly when viewed from the tube outer surface side, and the inner portion of the tube is viewed from the inner surface of the tube. The convex shape of the outer surface of the tube is concave in the inner direction by pressing the inner surface from the outer surface side of the tube and the inner surface is formed in a concave shape that concaves the surface in the outer direction. the concave shape the inner side of the pipe surface with Characterized in that it is formed on the reversible shape such that convex.

  According to the present invention having such a feature, the play rate of the conductive path at a predetermined position inside the exterior member can be reduced by forming the vibration suppressing portion capable of reversing the unevenness. Then, the swing width at that position can be reduced or pressed down. Therefore, even if it is a location where it is easy to shake, relative shake between the conductive path and the exterior member can be suppressed.

  According to a second aspect of the present invention, in the wire harness according to the first aspect, the vibration suppressing portion is formed at least in a portion where the wire harness is routed straight.

  According to the present invention having such a feature, the portion of the wire harness that is routed straight becomes a portion where the conductive path is likely to swing, and the vibration suppressing portion is formed on the exterior member for the portion of the wire routed straight. The Therefore, even if it is a location where it is easy to shake, relative shake between the conductive path and the exterior member can be suppressed.

  According to the first aspect of the present invention, since the vibration suppressing portion capable of reversing the unevenness is formed on the exterior member, for example, it is possible to suppress the vibration of the conductive path in the exterior member even during traveling. There is an effect that can be done. Thereby, there exists an effect that it can prevent that the coating | cover of a conductive path (When it has a shield function, the braid | blade and metal foil outside a conductive path) will be damaged.

  According to the second aspect of the present invention, even if it is a portion where the wire harness is routed straight, that is, a portion where the wire harness is likely to be shaken, it is possible to suppress the swing of the conductive path in the exterior member. Play.

It is a figure which shows the wire harness of this invention, (a) is a schematic diagram which shows the wiring state of a high voltage wire harness, (b) shows the wiring state of the low voltage wire harness different from (a). It is a schematic diagram shown. It is a perspective view which shows the structure of the wire harness of this invention. FIG. 3 is a perspective view showing a state when a conductive path is inserted through the exterior member of FIG. It is a perspective view which shows the state just before reversing the vibration suppression part of an exterior member. (A) is sectional drawing which shows the state immediately before reversing a vibration suppression part, (b) is sectional drawing which shows the state after reversing a vibration suppressing part.

  The wire harness includes a tubular-shaped exterior member and one or a plurality of conductive paths that are inserted and protected by the exterior member. The exterior member has one or a plurality of vibration suppressing portions. The vibration suppressing portion is formed as a portion that suppresses the deflection by reducing the play rate of the conductive path at a predetermined position inside the exterior member. Specifically, it is formed in a convex shape when viewed from the tube outer surface side and is formed in a concave shape when viewed from the tube inner surface side, and the tube inner surface side becomes convex by pressing from the tube outer surface side. It is formed in a reversible shape. By forming such a vibration suppression portion, the conductive path is suppressed from relative shake with the exterior member.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a diagram showing a wire harness according to the present invention, in which (a) is a schematic diagram showing a wiring state of a high-voltage wire harness, and (b) is a wiring diagram of a low-voltage wire harness different from (a). It is a schematic diagram which shows a search state. 2 is a perspective view showing the configuration of the wire harness of the present invention, FIG. 3 is a perspective view showing a state when the conductive path is inserted into the exterior member of FIG. 2 (before the vibration suppressing portion is inverted), and FIG. FIG. 5A is a cross-sectional view showing a state immediately before reversing the vibration suppression unit, and FIG. 5B is a view after reversing the vibration suppression unit. It is sectional drawing which shows a state.

  In the present embodiment, the present invention is applied to a wire harness routed in a hybrid vehicle (which may be an electric vehicle or a general vehicle that runs on an engine).

<About the configuration of the hybrid vehicle 1>
In FIG. 1A, reference numeral 1 indicates a hybrid vehicle. The hybrid vehicle 1 is a vehicle that mixes and drives two powers of an engine 2 and a motor unit 3, and the motor unit 3 is supplied with electric power from a battery 5 (battery pack) via an inverter unit 4. . The engine 2, the motor unit 3, and the inverter unit 4 are mounted in the engine room 6 where the front wheels and the like are located in this embodiment. Further, the battery 5 is mounted on the rear part 7 of the vehicle where there is a rear wheel or the like (it may be mounted in a vehicle room existing behind the engine room 6).

  The motor unit 3 and the inverter unit 4 are connected by a high-voltage wire harness 8 (high voltage motor cable). The battery 5 and the inverter unit 4 are also connected by a high-voltage wire harness 9. The intermediate portion 10 of the wire harness 9 is routed under the vehicle floor 11 in the vehicle (in the vehicle body). Further, the intermediate portion 10 is routed substantially in parallel along the vehicle underfloor 11. The vehicle underfloor 11 is a known body (vehicle body) and a so-called panel member, and a through hole is formed at a predetermined position. The wire harness 9 is inserted into the through hole in a watertight manner.

  The wire harness 9 and the battery 5 are connected via a junction block 12 provided in the battery 5. External connection means such as a shield connector 14 disposed on the harness terminal 13 on the rear end side of the wire harness 9 is electrically connected to the junction block 12. Further, the wire harness 9 and the inverter unit 4 are electrically connected via an external connection means such as a shield connector 14 disposed on the harness terminal 13 on the front end side.

  The motor unit 3 includes a motor and a generator. The inverter unit 4 includes an inverter and a converter. The motor unit 3 is formed as a motor assembly including a shield case. The inverter unit 4 is also formed as an inverter assembly including a shield case. The battery 5 is of Ni-MH type or Li-ion type, and is formed as a module. It is also possible to use a power storage device such as a capacitor. The battery 5 is not particularly limited as long as it can be used for the hybrid vehicle 1 and the electric vehicle.

  In FIG. 1B, reference numeral 15 indicates a wire harness. The wire harness 15 is a low voltage (for low voltage), and electrically connects the low voltage battery 16 at the rear part 7 of the hybrid vehicle 1 and the auxiliary device 18 (equipment) mounted on the front part 17 of the vehicle. Provided to connect. The wire harness 15 is routed through the vehicle underfloor 11 as in the case of the wire harness 9 of FIG. 1A (this is an example and may be routed through the passenger compartment side).

  As shown in FIGS. 1A and 1B, high-voltage wire harnesses 8 and 9 and a low-voltage wire harness 15 are routed in the hybrid vehicle 1. Although the present invention can be applied to any wire harness, a low voltage wire harness 15 will be described below as a representative example.

<About the structure of the wire harness 15>
In FIG. 1 (b), a long wire harness 15 routed through the vehicle underfloor 11 (straightly routed under the vehicle underfloor 11) is connected to the harness body 19 and both terminals of the harness body 19. Each of the connectors 20 is provided. The wire harness 15 includes a fixing member (for example, a clamp) for routing the wire harness 15 at a predetermined position, and a water stop member (for example, a grommet) (not shown).

<About the configuration of the harness body 19>
In FIG. 2, the harness body 19 includes a single conductive path 21 and an exterior member 22 that houses and protects the conductive path 21. The number of the conductive paths 21 is one in this embodiment, but this is an example (two or three may be used. In the case of a plurality of wires, the high-voltage wire harness 9 is provided. You can do it together).

  First, the conductive path 21 and the exterior member 22 in the harness body 19 will be described, and then the method for manufacturing the wire harness 15 and the operation of the vibration suppressing portion 24 in the exterior member 22 will be described.

<About the conductive path 21>
In FIG. 2, the conductive path 21 is configured to include a conductive conductor and an insulating insulator (cover) provided outside the conductor. The conductor is formed in a circular cross section by copper or copper alloy, or aluminum or aluminum alloy. Concerning the conductor, a conductor structure in which strands are twisted together or a rod-shaped conductor structure having a rectangular or circular (round) cross section (for example, a conductor structure having a flat single core or a single round core, in this case, The wire itself may be in the form of a rod). In the conductor as described above, an insulator made of an insulating resin material is extruded on the outer surface.

  The insulator is extruded on the outer peripheral surface of the conductor using a thermoplastic resin material. The insulator is formed as a cover having a circular cross section. The insulator is formed with a predetermined thickness. As the thermoplastic resin, various known types can be used, and are appropriately selected from polymer materials such as polyvinyl chloride resin, polyethylene resin, and polypropylene resin.

<About the exterior member 22>
2 and 3, the exterior member 22 is formed into a straight tube-shaped member by resin molding (it is straight before use. After insertion of the conductive path 21, the exterior member 22 is not illustrated. The pipe part should be bent according to the shape of the wiring destination). Moreover, the exterior member 22 is formed in the shape without a stomach split. In other words, it is formed in a shape without a slit (formed in a shape that is not a split tube).

  The exterior member 22 is formed such that the portion where the wire harness 15 is routed straight, that is, the portion of the vehicle underfloor 11 (see FIG. 1) that is likely to swing is circular in cross section (as in this embodiment). The shape is not limited to a perfect circle, and may be, for example, an oval cross-section, an ellipse, or a rectangle.

  If the structure portion of the exterior member 22 corresponding to the portion that is routed straight is called a straight tube portion 23, a plurality of vibration suppressing portions 24 that are characteristic portions of the present invention are formed in the straight tube portion 23. The

<About vibration suppression unit 24>
2 to 5, the vibration suppressing portions 24 are arranged and formed at predetermined intervals in the axial direction of the exterior member 22 (assumed as an example). The vibration suppressing portion 24 is formed in a portion that reduces the play rate of the conductive path 21 at a predetermined position inside the straight tube portion 23 (the ratio of the space where the swing of the conductive path 21 occurs). The vibration suppressing portion 24 is disposed and formed at a position necessary for suppressing the vibration of the conductive path 21. In addition, the vibration suppression part 24 shall not be plural but only one.

  The vibration suppressing portion 24 is formed in a shape portion that can be reversed. Specifically, it is formed in a convex shape when viewed from the tube outer surface 25 side, is formed in a concave shape when viewed from the tube inner surface 26 side, and is pressed from the tube outer surface 25 side (deformation treatment). It is formed in a part having a reversible shape such that the side of the tube inner surface 26 becomes convex by pressing in the direction of the arrow using the tool 27.

<About the manufacturing method of the wire harness 15, and the effect | action of the vibration suppression part 24>
In FIG. 1, the wire harness 15 is first manufactured with a portion of the harness body 19. Then, the terminal is processed. In FIG. 2, the harness main body 19 is manufactured by inserting a conductive path 21 from one end opening of the exterior member 22 toward the other end opening as shown in FIG. 3. Specifically, the conductive path 21 and the exterior member 22 are prepared, and then the conductive path 21 is inserted into the exterior member 22.

  When the insertion of the conductive path 21 is finished, as shown in FIGS. 4 and 5A, the vibration suppressing unit 24 is pressed in the direction of the arrow using the deformation jig 27. As a result, the vibration suppressing unit 24 is pushed inward to be reversed. That is, the vibration suppressing unit 24 is reversed to the state shown in FIGS. 2 and 5B. When the vibration suppressing unit 24 is reversed, the play rate of the conductive path 21 at a predetermined position is reduced accordingly.

<Summary and effect of the present invention>
As described above with reference to FIGS. 1 to 5, the wire harness 15 of the present invention includes a tubular-shaped exterior member 22 and a single conductive path 21 inserted and protected by the exterior member 22. And is configured. The exterior member 22 has a plurality of vibration suppression units 24. The vibration suppressing portion 24 is formed as a portion that reduces the play rate of the conductive path 21 at a predetermined position inside the exterior member 22 and suppresses the shake. Specifically, it is formed in a convex shape when viewed from the tube outer surface 25 side and is formed in a concave shape when viewed from the tube inner surface 26 side, and the tube inner surface is pressed by the pressure from the tube outer surface 25 side. It is formed in a reversible shape such that the side of 26 is convex. By forming the vibration suppressing portion 24 as described above, the conductive path 21 is suppressed from being shaken relative to the exterior member 22.

  Therefore, according to the wire harness 15 of the present invention, the swing of the conductive path 21 in the exterior member 22 can be suppressed. Thereby, it can prevent that the insulator of the conductive path 21 hits against the inner surface of the tube of the exterior member 22 and damages it (in the case of a conductive path having a shielding function, damage to the braid and the metal foil is prevented. can do).

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Hybrid vehicle, 2 ... Engine, 3 ... Motor unit, 4 ... Inverter unit, 5 ... Battery, 6 ... Engine room, 7 ... Car rear part, 8, 9 ... Wire harness, 10 ... Middle part, 11 ... Under vehicle floor, DESCRIPTION OF SYMBOLS 12 ... Harness terminal, 14 ... Shield connector, 15 ... Wire harness, 16 ... Low voltage battery, 17 ... Automotive front part, 18 ... Auxiliary device, 19 ... Harness main body, 20 ... Connector, 21 ... Conductive path, 22 ... Exterior member, 23 ... Straight pipe part, 24 ... Vibration suppression part, 25 ... Pipe outer surface, 26 ... Pipe inner surface, 27 ... Deformation jig

Claims (2)

In a wire harness comprising a tubular-shaped exterior member and one or a plurality of conductive paths inserted and protected by the exterior member,
The exterior member has one or a plurality of vibration suppressing portions that reduce a play rate of the conductive path at a predetermined position inside the exterior member and suppress a shake,
The vibration suppressing unit sees a portion of the outer member to be the tubular body shaped from Kangaimen side is formed in a convex shape as to protrude the tube outer surface in the outward direction, the said portion When viewed from the tube inner surface side , the tube inner surface is formed in a concave shape that is recessed in the outer direction , and the convex of the tube outer surface is pressed by being pressed inward from the tube outer surface side . The wire harness is formed in a reversible shape such that the shape is concave in the inner direction and the concave shape of the inner surface of the tube is convex in the inner direction . The wire harness according to claim 1,
The said vibration suppression part is formed targeting at least the part which wires the said wire harness straightly. The wire harness characterized by the above-mentioned.

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