JP2019006394A - Vehicular harness structure - Google Patents

Abstract

To provide a vehicular harness structure which makes it possible to share part numbers of a wire harness and eliminate adding or removing of the wire harness.SOLUTION: A vehicular harness structure comprises: a gateway device 40A which is connected to a junction box 20 having a standard control part 19 to relay transmission and reception of data between on-board networks; and a communication harness 14 for extension which has a communication line 25 connected to the gateway device 40A, an additional connection member 16, which has a control function part 15A for controlling extension electrical equipment 29A selectively post-mounted on a vehicle as an object of fitting, having one end post-branched and connected to the communication line 25A while having the other end connected to the extension electrical equipment 29A.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle harness structure.

  Many electric devices such as various lamps and motors and switch devices for operating these are mounted on the vehicle. These various electrical devices are connected to a wire harness for supplying electric power supplied from a battery or the like, a control signal for controlling these electrical devices, and the like. This wire harness includes a plurality of electric wires and connectors. The electric wire includes a conductive core wire and an insulating covering portion that covers the core wire. The connector includes a terminal fitting that is attached to the end of an electric wire and connected to a core wire, and a connector housing made of an insulating resin that houses the terminal fitting.

By the way, the wire harness routed in the vehicle needs to cope with the presence or absence of a function due to the difference in the specification of the vehicle. In such a case, the conventional wire harness copes with retrofitting of functional parts. Such retrofit of functional components is performed by adding a wire harness for each function or wiring a wire harness having a high mounting rate.
Further, in recent years, as a communication system for controlling a plurality of electrical devices mounted on a vehicle, a plurality of electronic control units that control each electrical device are connected by a common multiplex communication line, and the multiplex communication line is connected to each other. A multiplexed communication system is used in which multiplexed signals are exchanged and the operation of each electrical equipment is controlled based on the signals (see, for example, Patent Document 1).

  When connecting the standard electrical equipment 501 and the extended electrical equipment 505, which are functional components, to the wire harness provided with such a communication system, as shown in FIG. 7, various harness assemblies 503, 507, and 509 are used. The standard electrical equipment 501 and the extended electrical equipment 505 are generally connected to a junction box 520 provided with an electronic control unit (hereinafter referred to as an ECU (Electronic Control Unit)) 511 for electronic control.

  For example, as shown in FIG. 7A, a harness assembly 503 to which two standard electrical devices 501 are connected includes an ECU-side connector 515 and a standard device-side connector 517 attached to both ends of the electric wire 513. Two standard electrical devices 501 are connected to the ECU 511 of the junction box 520.

  Further, as shown in FIG. 7B, the harness assembly 507 to which the two standard electrical devices 501 and the extended electrical device 505 are connected is connected to the ECU-side connector 519 by a standard device-side connector 517, respectively. And the expansion device side connector 521, and two standard electrical devices 501 and expansion electrical devices 505 are connected to the ECU 511 of the junction box 520, respectively.

  Further, as shown in FIG. 7C, the harness assembly 509 to which the two standard electrical equipment 501 having a high mounting rate are connected is connected to the ECU-side connector 519 regardless of whether or not the extension electrical equipment 505 is connected. Are provided with a standard device side connector 517 and an extended device side connector 521, respectively, and two standard electric devices 501 are connected to the ECU 511 of the junction box 520.

JP 2002-260747 A

  However, if a harness assembly is added for each additional electrical equipment 505 to be additionally connected, such as the harness assembly 503 and the harness assembly 507 shown in FIGS. The product number will increase. If the number of the wire harness to be assembled increases, the assembly work in the wire harness assembly line becomes complicated, and the efficiency of the wire harness assembly work decreases. For this reason, there exists a problem that the mass productivity of a wire harness falls and the cost of each component and wire harness itself rises.

  On the other hand, in the case of the harness assembly 509 shown in FIG. 7 (c), the expansion device side connector 521 and the electric wire 513, which are component parts (so-called “discard”) that are not used even if they are routed in the vehicle, are provided. Occurs, and the waste of the wire harness increases, which also increases the cost of the wire harness.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a vehicle harness structure capable of making the wire harness part number common and eliminating the discarding of the wire harness.

The above object of the present invention is achieved by the following configuration.
(1) A gateway device connected to a junction box having a standard control unit for controlling standard electrical equipment that is commonly attached to a vehicle to be attached and relaying data transmission / reception between in-vehicle networks, and the gateway device A communication line connected to the vehicle, and at least one expansion electrical device selectively attached to the attachment target vehicle, the other end being connected and a control function unit for controlling the expansion electrical device A vehicle harness structure comprising: an extension communication harness in which one end of a connection member is branched and connected to the communication line afterward.

According to the vehicle harness structure having the configuration of (1) above, when the extension electrical equipment is selectively attached to the attachment target vehicle, one end is branched and connected to the communication line of the extension communication harness connected to the gateway device. It is retrofitted via an additional connecting member. Further, when the extension electrical equipment is not attached to the attachment target vehicle, the extension communication harness can be omitted without being connected to the gateway device. Therefore, the gateway device and the extension communication harness do not have any discarded components.
Furthermore, the extension electrical equipment selectively attached to the attachment target vehicle can be additionally connected to an arbitrary position of the extension communication harness via the additional connection member having the control function unit. The extension electrical equipment can be retrofitted to the extension communication harness not only at the time of manufacturing the vehicle harness but also to the extension communication harness of the vehicle harness routed in the completed vehicle.
Further, by using the extension communication harness, the extension electrical device can be easily retrofitted without changing the harness connecting the gateway device and the junction box. That is, according to the number and type of expansion electrical equipment, the expansion communication harness can easily change the specification of the communication line.
Therefore, when an extension electrical equipment that needs to be connected only to the communication line is selectively attached to the attachment target vehicle, it is retrofitted to the extension communication harness connected to the gateway device via an additional connection member having a control function unit. You don't have to go through the junction box.

(2) In the vehicle harness structure having the configuration of (1) above, the harness branch connection mechanism provided at one end of the additional connection member is press-connected to the conductor of the communication line in the communication harness for expansion. A vehicle harness structure characterized by the above.

  According to the vehicle harness structure configured as described in (2) above, the additional connection member that connects the extension communication harness and the extension electrical equipment includes the harness branch connection mechanism at the connection portion with the extension communication harness. This harness branching connection mechanism is attached to the extension communication harness, thereby tearing the insulating covering portion covering the conductor of the communication line in the extension communication harness by the press contact portion and connecting the press contact portion to the conductor. Therefore, the connection between the extension communication harness and the extension electrical equipment is simply completed simply by attaching the harness branch connection mechanism to the extension communication harness.

  According to the vehicle harness structure and the additional connection member according to the present invention, it is possible to make the part numbers of the wire harness common and to eliminate the discarding of the wire harness.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

It is a schematic diagram of the harness structure for vehicles which concerns on the reference example of this invention. It is the schematic diagram which decomposed | disassembled and showed the extension harness and the additional connection member in the harness structure for vehicles shown in FIG. (A) is a partially broken perspective view of a harness branch connection mechanism used in the vehicle harness structure according to this reference example, (b) is a plan view of the harness branch connection mechanism shown in (a), and (c) is (a) ) Is a front view of the harness branch connection mechanism shown in FIG. It is a top view of the additional connection member connected to the harness for an extension, (a) is the additional connection by which the extension harness side connector and the equipment side connector were connected to the extension harness side end and the extension electrical equipment side end of an electric wire, respectively (B) shows an additional connecting member in which the end of the electric wire harness for extension is directly connected to the harness branching connection mechanism, and (c) shows the electric wire extension harness side end and the extension electrical equipment side end of the harness. The additional connection member directly connected to the branch connection mechanism and the extended electrical equipment is shown. It is a schematic diagram of the harness structure for vehicles which concerns on the other reference example of this invention. It is a mimetic diagram of the harness structure for vehicles concerning one embodiment of the present invention. It is a top view explaining the various harness assemblies in the conventional vehicle harness structure.

Hereinafter, reference examples and embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of a vehicle harness structure according to a reference example of the present invention.
The vehicle harness structure according to this reference example includes a junction box 20, a standard connector portion 20 a provided in the junction box 20 for connecting one end of the standard harness 11, and a junction box for connecting the expansion harness 12. 20 and an extension connector portion 20b.

  The junction box 20 of the present reference example includes a standard control unit 19 for controlling a standard electrical equipment (for example, an air conditioner unit, a power window unit, etc.) 18 that is commonly mounted on the mounting target vehicle, and the mounting target vehicle. And an expansion control unit 21 for controlling the expansion electrical equipment 29 that is selectively retrofitted. Further, upstream of the junction box 20, a gateway device 40 and a battery power source for relaying data transmission / reception between in-vehicle networks are connected.

The standard connector portion 20 a is a connector portion provided in the junction box 20 for connecting one end of the standard harness 11 connected to the standard electrical equipment 18.
The extension connector portion 20b is a connector portion provided in the junction box 20 for connecting the extension harness 12 in which one end of the additional connection member 13 whose other end is connected to the extension electrical equipment 29 is branched and connected later. .

The standard harness 11 of this reference example is a wire harness that connects between a standard electrical equipment 18 that is commonly attached to a vehicle to be attached and a junction box 20 having a standard control unit 19 that controls the standard electrical equipment 18. is there. The standard harness 11 is a bundle of electric wires based on a plurality of electric wires such as a communication line, a power supply line, a GND (ground line), and a signal line connected to the standard control unit 19, and is attached to the standard connector unit 20 a of the junction box 20. A junction box side connector 22 to be connected and a standard equipment side connector 26 to be connected to the standard electrical equipment 18 are provided.
In addition, in this specification, “standard harness” that connects between standard electrical equipment that is commonly attached to the vehicle to be attached is not a wire harness common to all vehicles, but for each vehicle type, for each destination, It is an essential wire harness for each grade (specification).

The extension harness 12 of this reference example is a wire harness based on three types of electric wires, that is, a communication line 25, a power supply line 23, and a GND 27 connected to the extension control unit 21 of the junction box 20. Or routed separately from the standard harness 11 and extends to the vicinity of the extended electrical equipment 29 in the attachment target vehicle. In addition to this, the extension harness 12 may be further added with another electric wire such as a signal line (not shown), or may omit the GND 27. Multiple signals are sent through the communication line 25 in the extension harness 12. A single signal flows through the signal line in the extension harness 12.
Furthermore, the extension harness 12 is provided with a junction box side connector 24 connected to the extension connector portion 20b of the junction box 20 at one end and a termination device 30 at the other end.

An expansion electrical device (for example, a central door lock unit or a seat heater unit) 29 that is selectively retrofitted to the attachment target vehicle is retrofitted to the expansion harness 12 via the additional connection member 13.
4A, one end of the additional connecting member 13 is branched and connected to an arbitrary position of the extension harness 12 via the harness branch connecting mechanism 31, and the other end is connected via the auxiliary machine connecting mechanism 61. Are connected to the extended electrical equipment 29. A retrofitting method for retrofitting the expansion electrical device 29 to the expansion harness 12 via the additional connecting member 13 is at least the communication line 25 or the power line of the expansion harness 12 such as “pressure welding”, “adhesion”, “welding”, etc. Any method may be used as long as it can be branched and connected to at least one of 23. In this reference example, the case where the additional connection member 13 is branched and connected to the power supply line 23, the communication line 25, and the GND 27 of the extension harness 12 by a harness branch connection mechanism 31 described later will be described as an example.

  The standard control unit 19 and the expansion control unit 21 in the junction box 20 of this reference example are master ECUs that electronically control the standard electrical equipment 18 and the expansion electrical equipment 29, respectively. More specifically, the standard control unit 19 and the expansion control unit 21 are configured by mounting a “microcomputer”, “semiconductor fuse”, and “communication transceiver” on a circuit board or an electronic component. In addition, the standard control unit 19 and the expansion control unit 21 in the junction box 20 are not limited to those separately incorporated as described above, but may include an expansion control unit integrated in advance in the standard control unit.

  The additional connecting member 13 of this reference example is provided with a control function unit 15. In this reference example, the control function unit 15 having a signal generation unit that receives a signal from the communication line 25 and generates a control signal for controlling the operation of the extension electrical device 29 is a slave ECU that controls the operation of the extension electrical device 29. It is. The control function unit 15 is provided in the additional connection member 13 in order to control the operation of the extension electrical device 29. More specifically, the control function unit 15 is configured by mounting a “microcomputer”, “semiconductor fuse”, and “communication transceiver” on a circuit board or a circuit body using a bus bar. Note that the extended electrical device 29 itself may have a control function unit in advance.

As shown in FIG. 3, in the vehicle harness structure according to this reference example, one end of the additional connection member 13 is branched and connected to an arbitrary position of the extension harness 12 by the harness branch connection mechanism 31.
The harness branch connection mechanism 31 of the present reference example includes a pressure contact portion 33 that is connected to the conductor of the additional connection member 13 and is pressure connected to the conductor of the extension harness 12. The pressure contact portion 33 is configured by erecting a plurality of pressure contact blades 35, for example, and is connected to a predetermined circuit on the circuit board 37. The circuit board 37 is accommodated in a case made of insulating resin constituted by an upper case 39 and a lower case 41. The upper case 39 and the lower case 41 are connected so as to be openable and closable by, for example, a thin hinge (not shown).

  The harness branch connection mechanism 31 sandwiches the power line 23, the communication line 25, and the GND 27 in the extension harness 12 by the upper case 39 and the lower case 41, so that the press contact blade 35 tears the insulation coating of each line and presses the conductor of each line The portion 33 is press-connected. The harness branch connection mechanism 31 sandwiching the power supply line 23, the communication line 25, and the GND 27 in the extension harness 12 is fixed to an arbitrary position of the extension harness 12 by locking the upper case 39 and the lower case 41. That is, according to the vehicle harness structure according to the present reference example, the connection between the extension harness 12 and the extension electrical device 29 can be completed simply by attaching the harness branch connection mechanism 31 to an arbitrary position of the extension harness 12. . When the GND of the extension electrical device 29 is body-grounded, the branch connection by the additional connection member 13 of the GND 27 in the extension harness 12 becomes unnecessary.

Furthermore, the additional connection member 13 according to the present reference example is provided with a harness branch connection mechanism 31 for branch connection to the power supply line 23, the communication line 25, and the GND 27 in the extension harness 12, and is selectively provided to the attachment target vehicle. An auxiliary machine connection mechanism 61 for connecting to an optional extension electrical equipment 29 to be attached later is provided at the other end. More specifically, as shown in FIG. 4A, the additional connection member 13 includes an electric wire 55, an extension harness side connector 47 connected to the harness branch connection mechanism 31 at an extension harness side end of the electric wire 55, and an electric wire. 55 has a device-side connector 51 connected to the expansion electrical device 29 at the expansion electrical device side end. The additional connection member 13 is connected to the auxiliary machine connection mechanism 61 in which the device-side connector 51 is configured together with the connector 63 provided in the extension electrical equipment 29, and the extension harness-side connector 47 is connected to the board of the harness branch connection mechanism 31. Connected to the mounting connector 43.
In other words, the additional connecting member 13 of the present reference example can connect the extension harness 12 and the extension electrical device 29 via the electric wire 55 having a desired length, so that it matches the position of the extension electrical device 29. Mounting becomes possible and high versatility can be obtained.

In addition, the form of the additional connection member which concerns on this invention is not limited to the additional connection member 13 of the said reference example, Various forms can be taken.
For example, in the additional connection member 13A shown in FIG. 4B, the extension harness side end of the electric wire 55 is directly connected to the pressure contact portion 33 of the harness branch connection mechanism 31, and the device side connector 51 is connected to the extension electrical equipment 29. The connector 63 is connected to the connector 63.

Further, in the additional connecting member 13B shown in FIG. 4C, the extension harness side end of the electric wire 55 is directly connected to the pressure contact portion 33 of the harness branch connection mechanism 31, and the electric equipment side end of the electric wire 55 is It is directly connected to the circuit of the extension electrical equipment 29 and is configured integrally with the extension electrical equipment 29. Of course, the extension harness side connector 47 provided at the extension harness side end of the electric wire 55 may be connected to the board mounting connector 43 of the harness branch connection mechanism 31 (see FIG. 4A).
Furthermore, by connecting a branch connector (not shown) to the device-side connector 51 of the additional connection member 13, a plurality of expansion electrical devices 29 can be branch-connected.

  In addition, the electric wire 55 in the additional connection members 13, 13 </ b> A, and 13 </ b> B described above has a function of the electric wire depending on the type of the extended electrical equipment 29 (whether an electronic control unit is provided). For example, as shown in FIG. 4, when the control function unit 15 that controls the operation of the extended electrical device 29 is provided at the electrical device side end of the electrical wire 55, the electrical wire 55 is connected to the power line 23 </ b> A, the communication line 25 </ b> A, and the GND 27 </ b> A. Consists of. Moreover, when the control function part 15 is provided in the harness branching connection mechanism 31 or the extension harness side end of the electric wire 55, the electric wire 55 is connected to the power supply line 23A, the GND 27A, the communication according to the control content of the control function part 15. The line 25A, the signal line, and the like are selected and configured. Furthermore, when the extension electrical equipment 29 requires only the power from the extension harness 12, the electric wire 55 is constituted by the power supply line 23A.

FIG. 5 is a schematic diagram of a vehicle harness structure according to another reference example of the present invention. In addition, about the structural member similar to the harness structure for vehicles which concerns on the said reference example, a same sign is attached | subjected and detailed description is abbreviate | omitted.
As shown in FIG. 5, a junction box 70 in a vehicle harness structure according to another reference example has a standard box portion 71 having a standard control portion 19 and an expansion control portion 21 and is detachably attached to the standard box portion 71. And an extended box portion 73.
The standard box unit 71 and the expansion box unit 73 are connected to the standard control unit 19 and the expansion control unit 21 by fitting the connector 74 and the connector 76, respectively, and constitute an integrated junction box 70.
The standard box portion 71 is provided with a standard connector portion 70 a for connecting the junction box side connector 22 of the standard harness 11 connected to the standard electrical equipment 18, and the expansion box portion 73 has a junction of the extension harness 12. An expansion connector portion 70b for connecting the box side connector 24 is provided.

Therefore, for example, a common extension box in which the extension harness 12 is connected to a plurality of types of standard box parts 71 to which standard electrical equipment 18 having different specifications is connected or a standard control part 19 having different specifications is mounted. The unit 73 can be connected. Further, a plurality of types of expansion box portions 73 in which the extension harness 12 having different electric wire specifications or the expansion control unit 21 having different specifications are mounted are selectively connected to the common standard box portion 71. You can also.
Therefore, by forming the junction box 70 with the detachable standard box portion 71 and the expansion box portion 73, a highly versatile vehicle harness structure can be provided.

FIG. 6 is a schematic diagram of a vehicle harness structure according to an embodiment of the present invention. In addition, about the structural member similar to the harness structure for vehicles which concerns on the said reference example, a same sign is attached | subjected and detailed description is abbreviate | omitted.
As shown in FIG. 6, the vehicle harness structure according to an embodiment of the present invention is connected to a junction box 20 having a standard control unit 19 for controlling standard electrical equipment 18, and transmits and receives data between in-vehicle networks. And gateway device 40A for relaying, and expansion communication harness 14 connected to gateway device 40A. In the gateway device 40A of the present invention, the junction box to be connected is not limited to the junction box 20 shown in FIG. 6, but can be connected to various known junction boxes.
The extension communication harness 14 according to the present embodiment is a wire harness including the communication line 25 connected to the gateway device 40A, and is provided alongside the standard harness 11 and the extension harness 12 described above, or routed separately. Or it extends to the vicinity of the expansion electrical equipment 29A in the attachment target vehicle.
Further, the expansion communication harness 14 is provided with a connector 32 connected to the gateway device 40A at one end and a termination device 30 at the other end.

The extension electrical equipment 29 </ b> A that is selectively retrofitted to the attachment target vehicle is retrofitted to the extension communication harness 14 via the additional connection member 16.
In the additional connection member 16 of the present embodiment, one end of the communication line 25A is branched and connected to the communication line 25 of the expansion communication harness 14 via the harness branch connection mechanism 31, and one end of the power supply line 23A is connected via another harness. Connected to the power supply, one end of the GND 27A is body-grounded.

  Further, the additional connecting member 16 is provided with a control function unit 15A. In the present embodiment, the control function unit 15A having a signal generation unit that receives a signal from the gateway device 40A and generates a control signal for controlling the operation of the expansion electrical device 29A is an ECU that controls the operation of the expansion electrical device 29A. is there. The control function unit 15A is provided in the additional connection member 16 in order to control the operation of the extension electrical device 29A.

In the additional connection member 16 of the present embodiment, one end of the communication line 25A is branched and connected to an arbitrary position of the expansion communication harness 14 via the harness branch connection mechanism 31 in the same manner as the additional connection member 13 of the reference example. The other end is connected to the extended electrical equipment 29A. A retrofit method for retrofitting the expansion electrical device 29A to the expansion communication harness 14 via the additional connection member 16 can be branched and connected to the communication line 25 in the expansion communication harness 14 such as “pressure welding”, “adhesion”, and “welding”. Any method may be used.
When the extension electrical device 29A is directly connected to the power supply via another harness and is directly body grounded, the additional connection member branched and connected to the extension communication harness 14 is configured only by the communication line 25A. The

Next, the effect | action of the harness structure for vehicles which has said structure is demonstrated.
In the vehicle harness structure according to the reference example of the present invention described above, the standard harness 11 that connects the standard electrical equipment 18 and the junction box 20 that are commonly mounted to the mounting target vehicle is shared. When the extension electrical equipment 29 is selectively attached to the attachment target vehicle, one end branches to the communication line 25, the power supply line 23, and the GND 27 of the extension harness 12 connected to the extension connector portion 20b of the junction box 20. It is retrofitted through the additional connecting member 13 (13A, 13B) to be connected. Further, when the extension electrical device 29 cannot be attached to the attachment target vehicle, the extension harness 12 can be omitted without being connected to the extension connector portion 20 b of the junction box 20. Therefore, the standard harness 11 and the extension harness 12 do not have any discarded components.

Further, the extension electrical equipment 29 selectively attached to the attachment target vehicle can be additionally connected to an arbitrary position of the extension harness 12 via the additional connection member 13. The extension electrical equipment 29 can be retrofitted to the extension harness 12 as well as to the extension harness 12 of the vehicle harness routed to the completed vehicle as well as the manufacture of the vehicle harness.
Further, by using the extension harness 12, the extension electrical equipment 29 can be easily retrofitted without changing the standard harness 11. That is, the extension harness 12 can easily change the specifications of the communication line 25 or the power supply line 23 according to the number and type of the extension electrical equipment 29.

  Further, in the conventional harness structure for a vehicle, the number of the wire harness as a whole increases with the number of combinations to which the extension electrical equipment is attached due to the increase of the extension electrical equipment 29. On the other hand, in the vehicle harness structure of the present reference example, the additional harness 13 (13A) is connected to the standard harness 11 with the extension harness 12 and is connected to the extension harness 12 by branching in correspondence with the extension electrical equipment 29. , 13B) only. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

  Further, in the vehicle harness structure of this reference example shown in FIG. 3, the additional connection member 13 (13 </ b> A, 13 </ b> B) that connects the extension harness 12 and the extension electrical device 29 is provided at the connection portion with the extension harness 12. The harness branch connection mechanism 31 is branched and connected. The harness branch connection mechanism 31 is attached to the extension harness 12, so that the insulating covering portions covering the conductors of the power supply line 23, the communication line 25, and the GND 27 in the extension harness 12 are respectively cut by the press contact portions 33. A pressure contact portion 33 is connected to each conductor. Therefore, simply attaching the harness branch connection mechanism 31 to the extension harness 12 allows the connection between the extension harness 12 and the extension electrical device 29 to be completed easily.

  In addition, by incorporating a fuse function as the expansion control unit 21, the expansion electrical device 29 can be directly connected to the expansion harness 12 or can be mounted simultaneously. Thereby, it becomes possible to reduce the number of systems of the retrofit function (pong attachment) and the extension harness 12 and the communication line 25.

  Furthermore, by incorporating a microcomputer as the expansion control unit 21, it becomes easy to cope with control of the expansion electrical equipment 29 such as SW input, sensor input, and PWM output. Since the control with respect to the expansion electrical equipment 29 is performed by a microcomputer, a specification change or the like can be easily handled by software.

  In the vehicle harness structure according to another reference example of the present invention shown in FIG. 5, a common extension box portion 73 connected to the extension harness 12 is connected to a plurality of types of standard box portions 71. In addition, it is possible to selectively connect a plurality of types of extension box portions 73 to the common standard box portion 71, and versatility is enhanced.

  In the vehicle harness structure according to the embodiment of the present invention shown in FIG. 6, when the extension electrical equipment 29A is selectively attached to the attachment target vehicle, the extension communication harness connected to the gateway device 40A. It is retrofitted to the 14 communication lines 25 via an additional connection member 16 in which only one end of the communication line 25A is branched and connected. Further, when the extension electrical device 29A is not attached to the attachment target vehicle, the extension communication harness 14 can be omitted without being connected to the gateway device 40A. Therefore, the gateway device 40A and the extension communication harness 14 do not have any discarded components.

  Furthermore, the expansion electrical equipment 29A that is selectively retrofitted to the attachment target vehicle can be additionally connected to an arbitrary position of the expansion communication harness 14 via the additional connection member 16 having the control function unit 15A. The extension electrical equipment 29A can be retrofitted to the extension communication harness 14 not only when the vehicle harness is manufactured, but also for the extension communication harness 14 of the vehicle harness routed in the completed vehicle.

Further, by using the extension communication harness 14, the extension electrical equipment 29A can be easily retrofitted without changing the harness connecting the gateway device 40A and the junction box 20. That is, the extension communication harness 14 can easily change the specification of the communication line 25 according to the number and type of the extension electrical equipment 29A.
Accordingly, when the extension electrical equipment 29A that needs to be connected only to the communication line 25 is selectively attached to the attachment target vehicle, the extension connected to the gateway device 40A via the additional connection member 16 having the control function unit 15A. It is only necessary to retrofit the communication harness 14 for communication, and there is no need to go through the junction box 20.

  Therefore, according to the vehicle harness structure according to the above-described embodiment, it is possible to make the wire harness part number common and to eliminate the discarding of the wire harness.

Here, the features of the above-described embodiment of the vehicle harness structure according to the present invention will be briefly summarized below.
[1] Connected to a junction box (20) having a standard control unit (19) for controlling a standard electrical equipment (18) that is commonly mounted on a mounting target vehicle, and relays data transmission / reception between in-vehicle networks. Gateway device (40A) for
A communication line (25) connected to the gateway device (40A), the other end being connected to at least one extension electrical equipment (29A) selectively retrofitted to the attachment target vehicle and the extension electrical equipment One end of an additional connection member (16) having a control function unit (15A) for controlling the device (29A) is provided with an expansion communication harness (14) that is branched and connected to the communication line (25) afterward. A vehicle harness structure characterized by that.
[2] A vehicle harness structure configured as described in [1] above,
A harness branch connection mechanism (31) provided at one end of the additional connection member (16) is press-connected to a conductor of a communication line (25) in the expansion communication harness (14). Harness structure.

  The vehicle harness structure according to the present invention is not limited to the above-described embodiment, and can be appropriately modified and improved. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 11 ... Standard harness 14 ... Communication harness 15A for extension ... Control function part 16 ... Additional connection member 18 ... Standard electrical equipment 19 ... Standard control part 20 ... Junction box 29A ... Extension electrical equipment 31 ... Harness branch connection mechanism 40A ... Gateway apparatus

Claims (2)

A gateway device connected to a junction box having a standard control unit for controlling standard electrical equipment that is commonly mounted on the vehicle to be mounted, and relaying transmission and reception of data between in-vehicle networks;
A control function unit having a communication line connected to the gateway device, and having the other end connected to at least one extended electrical device selectively attached to the attachment target vehicle and controlling the extended electrical device A vehicle harness structure, comprising: an extension communication harness having one end of an additional connection member having a branch connection connected to the communication line afterward. The vehicle harness structure according to claim 1,
A harness structure for a vehicle, wherein a harness branch connection mechanism provided at one end of the additional connection member is press-connected to a conductor of a communication line in the extension communication harness.

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