JP2016147558A - Vehicle electrical equipment connection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle electrical equipment connection system which can reduce the size of a power supply distribution box while coping with retrofitting of electrical equipment.SOLUTION: A vehicle electrical equipment connection system comprises: a basic harness which is connected to a power source distribution box to which power supply power is supplied by an on-vehicle main power supply and connects plural pieces of standard system electrical equipment commonly attached to an attachment object vehicle; an additional connection member 13 whose one end is branched and connected to at least a communication line 35 or a signal line 39 of the basic harness and whose other end is connected to expansion system electrical equipment 41 selectively retrofitted to the attachment object vehicle; and a semiconductor fuse 63 which is provided in the additional connection member 13 for controlling and protecting the expansion system electrical equipment 41.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicular electrical equipment connection system.

  A wide variety of electronic devices are mounted on vehicles such as automobiles. In order to supply power to these various types of electronic devices, the electric wire harness of the vehicle is configured by integrating electrical components such as mechanical fuses and relays at appropriate locations between the power source and the electronic devices. A connection box is arranged (see Patent Document 1). The electrical junction box is also called a junction block, a fuse block, or a relay box. In this specification, the junction block, fuse block, and relay box described above are collectively referred to as a power distribution box.

  As shown in FIG. 27, the power distribution box 501 includes a case body 511 made of a synthetic resin having a plurality of rows of fuse mounting portions 505, a plurality of relay mounting portions 507, an ECU mounting portion 509, etc. provided on the upper surface 503, and A fuse 513 attached to the fuse attachment portion 505, a relay 515 attached to the relay attachment portion 507, an ECU 517 attached to the ECU attachment portion 509, and a lower surface 519 of the case main body 511, and a terminal portion of the fuse 513 or the relay 515 And a lower cover (not shown) for covering the lower surface 519 of the case body 511, and an upper cover (not shown) for covering the upper surface 503 of the case body 511.

JP 2010-136469 A

In recent years, with the progress of computerization in vehicles and the diversification of vehicle types, the mounting ratio of electrical equipment tends to increase more and more. For example, the response to the presence / absence of electrical equipment due to the difference in vehicle specifications is handled by retrofitting electrical equipment. Conventionally, the power distribution box 501 is provided with a spare fuse 513 and a relay 515 in advance in order to prepare for an increase in the number of circuits by such retrofitting, and a spare space for that purpose is secured in the box.
However, depending on the specifications, if parts such as a fuse 513 and a relay 515 (so-called “discard”) that are not used are generated, waste is increased, the cost is increased, and the power distribution box 501 is increased in size and mounted on the vehicle. It was also against the request for smaller and lighter parts.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a vehicular electrical equipment connection system that can reduce the size of a power distribution box while accommodating the retrofit of electrical equipment.

The above object of the present invention is achieved by the following configuration.
(1) A basic harness that is connected to a power distribution box that is supplied with power by a vehicle main power source and is connected in common to a vehicle to be mounted; An additional connection member having one end branched and connected to at least the communication line or the signal line, and the other end connected to at least one expansion system electrical device selectively retrofitted to the attachment target vehicle, and the expansion system electrical device And a relay / fuse portion provided in the additional connection member for controlling and protecting the vehicle electrical equipment connection system.
In addition, the “basic harness” in the present specification refers to one type of basic harness corresponding to one type of vehicle to be mounted, a plurality of types of basic harnesses corresponding to vehicles to be mounted such as different types of vehicle, and a plurality of types of basic harnesses. It includes all of one type of basic harness corresponding to the vehicle to be mounted.

According to the vehicular electrical equipment connection system having the configuration (1), useless space in the power distribution box is reduced, and the power distribution box is downsized. That is, in the conventional power distribution box, in addition to fuses and relays for standard electrical equipment, fuses and relays for expansion electrical equipment are attached in advance or space is secured. For this reason, the power distribution box has become larger and more expensive than the fuses and relays for the extended electrical equipment. On the other hand, in the vehicle electrical equipment connection system having the configuration (1), a relay / fuse part for controlling and protecting the extended electrical equipment is provided in the additional connection member. In other words, the relay / fuse unit is added together with the addition of the expansion system electrical equipment. For this reason, it is not necessary to provide a fuse or a relay for the extension system electrical equipment to be discarded in the power distribution box, or to secure a space for providing it.
In addition, according to the vehicle electrical equipment connection system configured as described in (1) above, the basic harness that is commonly attached to the attachment target vehicle is shared, and the expansion electrical equipment that is selectively attached to the attachment target vehicle. However, it is retrofitted through an additional connection member whose one end is branched and connected to at least the communication line or the signal line of the basic harness. Therefore, there are no discarded components in the basic harness.
Further, the additional connection member can additionally connect an expansion system electrical device selectively attached to the attachment target vehicle to an arbitrary position of the basic harness. Retrofit of the extension system electrical equipment by this additional connecting member is possible not only at the time of manufacturing the vehicle harness but also to the basic harness of the vehicle harness routed to the completed vehicle. That is, it becomes easy to configure a wire harness corresponding to a plurality of vehicle patterns in accordance with the addition of expansion system electrical equipment (optional equipment) desired by the user (vehicle purchaser). Of course, even in that case, there are no components (circuit bodies, etc.) that are discarded.
Further, since the additional connecting member is branched and connected to the basic harness according to the number of expansion-type electrical devices attached to the vehicle to be attached, there are no discarded components in the entire electrical equipment connection system for vehicles. Does not occur.
Further, in the conventional harness structure for a vehicle, the number of wire harnesses as a whole increases with the number of combinations to which the electrical equipment is attached due to an increase in electrical equipment (extended electrical equipment). On the other hand, in the vehicular electrical equipment connection system configured as described above (1), it is only necessary to ensure the part numbers of the additional connection members corresponding to the extended electrical equipment. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

(2) In the vehicle electrical equipment connection system having the configuration of (1), a control function unit provided in the additional connection member for controlling the expansion electrical equipment has the relay / fuse part. The vehicle electrical equipment connection system characterized by the above-mentioned.

According to the vehicle electrical equipment connection system configured as described in (2) above, the control function unit provided in the additional connection member has the relay / fuse unit (for example, a semiconductor fuse), and is retrofitted to the basic harness. Even when the extended electrical device does not have a control function unit, it is easy to improve the function of the extended electrical device.
In addition, since the additional connecting member includes a control function unit having a relay / fuse unit, direct connection to the basic harness and simultaneous mounting of a plurality of expansion system electrical devices are possible. As a result, it is possible to add functions later (so-called “pong attachment”) and to reduce the number of systems of basic harnesses and communication lines or signal lines.
Furthermore, since the control function unit incorporates, for example, a microcomputer, it becomes easy to cope with control of switch input, sensor input, PWM (Pulse Width Modulation) output and the like of the expansion system electrical equipment. Since the control for these extension system electrical devices is performed by a microcomputer, a specification change or the like can be easily handled by software.

(3) A trunk harness that is connected to a power distribution box that is supplied with power by a main power source on the vehicle and is commonly attached to a plurality of attachment target vehicles, and a communication line, a power line, a signal line, and a ground line in the trunk harness A branch harness, one end of which is branched and connected to at least one of them, and the other end is connected to at least one expansion-system electrical device attached to the attachment target vehicle; and the expansion-system electrical device An electrical equipment connection system for a vehicle, comprising: a relay / fuse section provided in the branch line harness for control and protection.
In addition, the term “main line harness” in the present specification refers to one type of main line harness corresponding to one type of attachment target vehicle, a plurality of types of main line harnesses corresponding to different types of attachment target vehicles, and the like. It includes all of one type of main line harness corresponding to the vehicle to be mounted.

According to the vehicular electrical equipment connection system having the configuration (3), useless space in the power distribution box is reduced, and the power distribution box is downsized. That is, in the conventional power distribution box, in addition to the standard system electrical equipment, fuses and relays for the extended system electrical equipment are attached in advance or the space is secured. For this reason, the power distribution box has become larger and more expensive than the fuses and relays for the extended electrical equipment. On the other hand, in the vehicle electrical equipment connection system having the configuration (3), the branch harness is provided with a relay / fuse portion for controlling and protecting the expansion electrical equipment. In other words, the relay / fuse unit is added together with the addition of the expansion system electrical equipment. For this reason, it is not necessary to provide a fuse or a relay for the extension system electrical equipment to be discarded in the power distribution box, or to secure a space for providing it.
Moreover, according to the vehicle electrical equipment connection system having the configuration of (3) above, the main line harness attached in common to the plurality of attachment target vehicles is shared, and the expansion system electrical equipment attached to the attachment target vehicle is Then, it is retrofitted through a branch line harness having one end branched and connected to at least one of a communication line, a power line, a signal line, and a ground line in the main line harness. Therefore, there are no discarded components in the main harness.
Furthermore, the branch line harness is branched and connected to the main line harness according to the number of expansion-type electrical devices that are attached to the vehicle to be installed, so that discarded components are generated in the entire vehicle electrical device connection system. do not do.
In addition, in the conventional vehicle harness structure, the number of optional electrical equipment (expansion electrical equipment) has increased, and the part number of the entire wire harness has increased with the number of combinations to which the optional electrical equipment can be attached. On the other hand, in the vehicle electrical equipment connection system having the configuration (3) described above, it is only necessary to secure the part number of the branch harness corresponding to the optional extended electrical equipment. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

(4) The vehicle electrical equipment connection system configured as described in (3) above, wherein the conductor is provided at one end of the branch harness and is at least one conductor of the communication line, the power line, the signal line, and the ground line. An electrical equipment connection system for a vehicle, wherein a harness branch connection mechanism for press-connecting to the relay has the relay / fuse portion.

  According to the vehicle electrical equipment connection system configured as described in (4) above, the harness branch connection mechanism having the relay / fuse portion is provided at one end of the branch harness, so that the communication line, the power line, the signal line, and the An insulating covering portion covering at least one of the ground wires is cut by the press contact portion, and the press contact portion is connected to the conductor. Therefore, the connection between the main harness and the expansion system electrical equipment can be completed simply by attaching the harness branch connection mechanism provided with the relay / fuse portion to the main harness.

(5) A standard control unit for controlling a standard system electrical equipment that is commonly mounted on the mounting target vehicle, and an extended system electrical system that is supplied with power from a main power source on the vehicle and is selectively retrofitted to the mounting target vehicle. A power distribution box having an expansion control unit for controlling the device, a standard connector unit provided in the power distribution box for connecting one end of a standard harness connected to the standard electrical equipment, and the expansion An extension connector provided in the power distribution box for connecting an extension harness including at least one of a communication line and a power line in which one end of an additional connection member having the other end connected to the system electrical equipment is branched and connected later. And a relay / fuse portion provided in the additional connection member for controlling and protecting the expansion system electrical equipment. Instrumentation equipment connection system.

According to the vehicular electrical equipment connection system having the configuration (5), a useless space in the power distribution box is reduced, and the power distribution box is reduced in size. That is, in the conventional power distribution box, in addition to the standard system electrical equipment, fuses and relays for the extended system electrical equipment are attached in advance or the space is secured. For this reason, the power distribution box has become larger and more expensive than the fuses and relays for the extended electrical equipment. On the other hand, in the vehicular electrical equipment connection system having the configuration (5), the relay / fuse portion for controlling and protecting the extended electrical equipment is provided in the additional connection member. In other words, the relay / fuse unit is added together with the addition of the expansion system electrical equipment. For this reason, it is not necessary to provide a fuse or a relay for the extension system electrical equipment to be discarded in the power distribution box, or to secure a space for providing it.
Moreover, according to the vehicle electrical equipment connection system having the configuration (5), the standard harness for connecting the standard electrical equipment that is commonly attached to the attachment target vehicle and the power distribution box is shared. When the extension system electrical equipment is selectively attached to the attachment target vehicle, one end is branched and connected to at least one of the communication line or the power line of the extension harness connected to the extension connector portion of the power distribution box. It is retrofitted via an additional connecting member. Further, when the extension system electrical equipment is not attached to the attachment target vehicle, the extension harness can be omitted without connecting to the extension connector portion of the power distribution box. Therefore, the standard harness and the extension harness do not have discarded components.
Furthermore, the expansion system electrical equipment that is selectively retrofitted to the attachment target vehicle can be additionally connected to an arbitrary position of the expansion harness via the additional connection member. The extension electrical equipment can be retrofitted to the extension harness as well as the extension harness of the vehicle harness routed to the finished vehicle, as well as the manufacture of the vehicle harness.
Further, by using the extension harness, it is possible to easily attach the extension system electrical equipment without changing the standard harness. That is, the extension harness can easily change the specifications of the communication line or the power supply line according to the number and type of the extension system electrical equipment.
Further, in the conventional harness structure for a vehicle, the number of wire harnesses as a whole increases with the number of combinations to which the extension system electrical devices can be attached due to the increase in the number of extension system electrical devices. On the other hand, in the vehicle electrical equipment connection system configured as described in (5) above, only an additional connecting member that is provided with an extension harness in addition to the standard harness and is connected to the extension harness after branching in correspondence with the extension electrical equipment. The product number should be secured. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

(6) A power distribution box to which power is supplied by the main power source on the vehicle, a standard system electrical device, an expansion system electrical device, a power line connected to the power distribution box and capable of supplying power to the electrical device, A standard system control ECU for controlling the standard system electrical equipment; and an expansion system control ECU for controlling the expansion system electrical equipment, wherein the expansion system electrical equipment is additionally connected to the power line. Wired connection is made by a member and power is supplied, and a relay / fuse part for controlling and protecting the expansion system electrical equipment is provided in the additional connection member, and the expansion system electrical equipment and the expansion system control ECU are: Signals can be transmitted and received by wireless communication, and the expansion system control ECU controls the expansion system electrical equipment by transmitting a control signal by wireless communication. Electrical equipment connection system for a vehicle, wherein the door.

According to the vehicle electrical equipment connection system having the configuration (6), a useless space in the power distribution box is reduced, and the power distribution box is downsized. That is, in the conventional power distribution box, in addition to the standard system electrical equipment, fuses and relays for the extended system electrical equipment are attached in advance or the space is secured. For this reason, the power distribution box has become larger and more expensive than the fuses and relays for the extended electrical equipment. In contrast, in the vehicle electrical equipment connection system having the configuration (6), a relay / fuse part for controlling and protecting the expansion electrical equipment is provided in the additional connection member. In other words, the relay / fuse unit is added together with the addition of the expansion system electrical equipment. For this reason, it is not necessary to provide a fuse or a relay for the extension system electrical equipment to be discarded in the power distribution box, or to secure a space for providing it.
Further, according to the vehicle electrical equipment connection system having the configuration (6), the communication line for controlling the extension (optional) electrical equipment can be configured by wireless connection, so that the extension (optional) electrical equipment There is no need to add a communication line. Accordingly, the configuration of the main line harness is simplified, and even if various optional electrical devices are prepared, the number of types of main line harnesses to be prepared is greatly reduced.

  According to the vehicle electrical equipment connection system according to the present invention, the power distribution box can be reduced in size while being retrofitted with electrical equipment.

  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. .

1 is a conceptual diagram of a vehicular electrical equipment connection system according to a first embodiment of the present invention. (A) is the partial fracture | rupture perspective view of the harness branch connection mechanism used for the electrical equipment connection system for vehicles which concerns on this 1st Embodiment, (b) opened the upper case of the harness branch connection mechanism shown to (a). The top view of a state, (c) is a front view of the harness branch connection mechanism shown to (a), (d) is AA sectional drawing of the harness branch connection mechanism shown to (a). It is a top view of the additional connection member in which the harness branch connection mechanism provided with the control function part which has a relay fuse part was used, (a) is each at the basic harness side end of an additional harness, and an expansion system electrical equipment side end, The additional connection member to which the basic harness side connector and the auxiliary machine side connector are connected is shown, (b) shows the additional connection member in which the basic harness side end of the additional harness is directly connected to the harness branch connection mechanism, and (c) The basic harness side end and expansion system electrical equipment side end of an additional harness show the additional connection member directly connected to the harness branch connection mechanism and expansion system electrical equipment. It is a top view of the additional connection member which provided the control function part which has a relay fuse part in the expansion system electrical equipment side end, (a) is the addition which the basic harness side end of the additional harness was directly connected to the harness branch connection mechanism The connection member is shown, (b) shows the additional connection member connected to the expansion system electrical equipment provided with the control function part, and (c) shows the auxiliary machine side end of the additional harness directly connected to the expansion system electrical equipment. An additional connection member is shown. It is a top view of the additional connection member to which a branch connector is connected between expansion system electrical equipment. It is a top view of the electrical equipment connection system for vehicles concerning modification 1 of this 1st embodiment. It is a top view of the electrical equipment connection system for vehicles concerning modification 2 of this 1st embodiment. It is a top view of the electrical equipment connection system for vehicles concerning modification 3 of this 1st embodiment. It is a schematic diagram of the power distribution box which concerns on a comparative example. It is a schematic diagram of the wire harness provided with the electrical equipment connection system for vehicles which concerns on 2 embodiment of this invention. It is the schematic diagram which decomposed | disassembled and showed the trunk wire harness and the branch wire harness in the wire harness shown in FIG. (A) is a partially broken perspective view of a harness branch connection mechanism provided with a relay / fuse part used in the vehicle electrical equipment connection system according to the second embodiment, and (b) is a harness branch shown in (a). The top view of a connection mechanism, (c) is a front view of the harness branch connection mechanism shown to (a), (d) is BB sectional drawing of the harness branch connection mechanism shown to (a). It is a top view of a branch line harness, (a) shows the branch line harness by which the main line harness side connector and the apparatus side connector were respectively connected to the main line harness side end and the expansion system electrical equipment side end of an electric wire, (b) is an electric wire. The main line harness side end of the cable is shown as a branch line harness directly connected to the harness branch connection mechanism, and (c) shows the main wire harness side end and the extension system electrical equipment side end of the wire directly connected to the harness branch connection mechanism and the extension system electrical equipment. The made branch line harness is shown. It is a top view of the branch line harness to which a branch connector is connected between expansion system electrical equipment. It is a schematic diagram of the electrical equipment connection system for vehicles which concerns on 3rd Embodiment of this invention. It is the schematic diagram which decomposed | disassembled and showed the extension harness and the additional connection member in the electrical equipment connection system for vehicles shown in FIG. (A) is a partially broken perspective view of a harness branch connection mechanism used in the vehicle electrical equipment connection system according to the third embodiment, (b) is a plan view of the harness branch connection mechanism shown in (a), (c) ) Is a front view of the harness branch connection mechanism shown in (a), and (d) is a CC cross-sectional view of the harness branch connection mechanism shown in (a). It is a top view of the additional connection member by which a relay fuse part is provided and connected to an extension harness, (a) is an extension harness side connector and an extension system electrical equipment side end, respectively, (B) shows the additional connecting member to which the device side connector is connected, (b) shows the additional connecting member in which the end of the wire extension harness is directly connected to the harness branching connection mechanism, and (c) shows the wire extension harness side The additional connection member by which the end and the extension system electrical equipment side end were directly connected to the harness branch connection mechanism and the extension system electrical equipment is shown. It is a schematic diagram of the electrical equipment connection system for vehicles which concerns on the modification 1 of 3rd Embodiment. It is a schematic diagram of the electrical equipment connection system for vehicles which concerns on the modification 2 of 3rd Embodiment. It is a block diagram which shows the structural example of the electrical equipment connection system for vehicles of 4th Embodiment. It is a block diagram which shows the internal structure of the power distribution box shown in FIG. It is a block diagram which shows the structure of the modification 1 of 4th Embodiment. It is a block diagram which shows the structure of the modification 2 of 4th Embodiment. It is a block diagram which shows the structure of the modification 3 of 4th Embodiment. It is a block diagram which shows the structure of the modification 4 of 4th Embodiment. It is a perspective view of the conventional power distribution box.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
The vehicle electrical equipment connection system according to the first embodiment of the present invention includes a power distribution box 21, a basic harness 11, an additional connection member 13, and a control function unit 15 including a semiconductor fuse 63 that is a relay / fuse unit. (See FIG. 2).

  As shown in FIG. 1, the basic harness 11 includes a power distribution box 21 to which power is supplied by a vehicle main power source, and a plurality of standard systems that are connected to the power distribution box 21 and are commonly mounted on the mounting target vehicle 17. It is a wire harness that connects between the electrical equipment 19 (for example, the air conditioner unit 23, the engine control unit 25, the power window unit 27, the rear combination lamp unit 29, the power seat unit 31, and the like).

  The power distribution box 21 is attached to an engine room of an automobile and supplies electric power to various electric equipment mounted on the automobile. Inside the power distribution box 21, an electric circuit connected to a mechanical fuse (not shown) and a relay (not shown) is formed by a bus bar (not shown), and power is distributed.

The basic harness 11 illustrated in FIG. 2 is an electric wire bundle based on three types of electric wires: a power line 33 as a trunk line, a communication line 35, and a GND 37 (ground wire). Of course, the basic harness 11 in the present invention is not limited to the three types of the power supply line 33, the communication line 35, and the GND 37, but can be configured to include other electric wires such as the signal line 39 (see FIG. 6). Not too long.
The basic harness 11 according to the present invention is not limited to one type of basic harness 11 corresponding to the plurality of types of attachment target vehicles 17 shown in FIG. 1, but one type corresponding to one type of attachment target vehicle 17. May be a plurality of types of basic harnesses 11 corresponding to attachment target vehicles 17 of different grades (for example, different destinations, different specifications) of one vehicle type.

  An extension system electrical device 41 (for example, a centralized door lock unit 43 or a seat heater unit 45) that is selectively retrofitted to the attachment target vehicle 17 is retrofitted to the basic harness 11 via the additional connection member 13. Yes. As shown in FIG. 3A, the additional connecting member 13 has one end branched and connected to the basic harness 11 via the harness branch connection mechanism 47 and the other end connected to the expansion system via the expansion system electrical equipment connection mechanism 49. Connected to the electrical equipment 41. A retrofit method for retrofitting the expansion system electrical equipment 41 to the basic harness 11 via the additional connecting member 13 is at least the communication line 35 or the signal line 39 of the basic harness 11 such as “pressure welding”, “adhesion”, “welding”, and the like. Any method can be used as long as it can be branched and connected. In the first embodiment, an example will be described in which the additional connecting member 13 is branched and connected to the power supply line 33, the communication line 35, and the GND 37 of the basic harness 11 by a harness branch connection mechanism 47 described later.

  The additional connecting member 13 of the first embodiment is provided with a control function unit 15 including a semiconductor fuse 63 which is a relay / fuse unit. In the first embodiment, the control function unit 15 having a signal generation unit (not shown) that receives a signal from the communication line 35 and generates a control signal for controlling the operation of the expansion system electrical device 41 includes the expansion system electrical device. 41 is an electronic control unit (hereinafter, referred to as an ECU (Electronic Control Unit)) for electronically controlling 41. The control function unit 15 is provided in the additional connection member 13 in order to control the operation of the expansion system electrical equipment 41. More specifically, the control function unit 15 is configured by mounting a “microcomputer”, a “communication transceiver”, and a semiconductor fuse 63 on a circuit board or a circuit body using a bus bar.

As shown in FIG. 2, in the vehicle electrical device connection system according to the first embodiment, one end of the additional connection member 13 is branched and connected to an arbitrary position of the basic harness 11 by a harness branch connection mechanism 47.
The harness branch connection mechanism 47 of the first embodiment includes a pressure contact portion 51 that is connected to the conductor of the additional connection member 13 and is pressure-connected to the conductor of the basic harness 11. The press contact portion 51 is configured by erecting a plurality of press contact blades 53 made of a pair, for example, and is connected to a predetermined circuit of the circuit board 55. The circuit board 55 is accommodated in a case made of an insulating resin constituted by an upper case 57 and a lower case 59. The upper case 57 and the lower case 59 are connected so as to be openable and closable by, for example, a thin hinge (not shown).

  The harness branch connection mechanism 47 sandwiches the power supply line 33, the communication line 35, and the GND 37 in the basic harness 11 by the upper case 57 and the lower case 59, so that the press contact blade 53 cuts the insulation coating of each line, and presses the conductor of each line. 51 is press-connected. The harness branch connection mechanism 47 sandwiching the power line 33, the communication line 35, and the GND 37 in the basic harness 11 is fixed to an arbitrary position of the basic harness 11 by locking the upper case 57 and the lower case 59. That is, according to the vehicular electrical equipment connection system according to the first embodiment, simply connecting the harness branch connection mechanism 47 to an arbitrary position of the basic harness 11 makes it easy to connect the basic harness 11 and the extended electrical equipment 41. To complete. In addition, when the GND 37 of the extension system electrical equipment 41 is body-grounded, the branch connection by the additional connection member 13 of the GND 37 in the basic harness 11 is not necessary.

  The circuit board 55 of the harness branch connection mechanism 47 according to the first embodiment is provided with the control function unit 15 including the semiconductor fuse 63 described above. The circuit of the harness branch connection mechanism 47 connected to the basic harness 11 and the control function unit 15 is taken out to the outside by the board mounting connector 61 provided on the circuit board 55.

  Further, the harness branch connection mechanism 47 of the additional connection member 13 is provided with a semiconductor fuse 63 built in the control function unit 15. The control function unit 15 is mounted on the circuit board 55. The semiconductor fuse 63 is built in the control function unit 15 in order to control and protect the extended system electrical equipment 41. The semiconductor fuse 63 built in the control function unit 15 has a relay function and a fuse function for the extended electrical equipment 41. Of course, the relay / fuse portion of the present invention for controlling and protecting the expansion system electrical equipment 41 is provided even if a mechanical fuse and relay are mounted on the circuit board 55 in the harness branch connection mechanism 47 of the additional connection member 13. Good.

Further, the additional connection member 13 according to the first embodiment is provided with a harness branch connection mechanism 47 for branch connection to the power supply line 33, the communication line 35, and the GND 37 in the basic harness 11 at one end. An extension system electrical equipment connection mechanism 49 for connecting to an extension system electrical equipment 41 that is selectively retrofitted is provided at the other end. More specifically, as shown in FIG. 3A, the additional connection member 13 includes an additional harness 65, a basic harness side connector 67 connected to the harness branch connection mechanism 47 at the basic harness side end of the additional harness 65, An expansion system electrical device side connector 69 connected to the expansion system electrical device 41 at the expansion system electrical device side end of the additional harness 65 is provided. The additional connection member 13 is connected to an expansion system electrical equipment connection mechanism 49 in which the expansion system electrical equipment side connector 69 is configured together with the connector provided in the expansion system electrical equipment 41, and the basic harness side connector 67 is connected to the harness branch. It is connected to the board mounting connector 61 of the connection mechanism 47.
That is, the additional connection member 13 of the first embodiment can connect the basic harness 11 and the expansion system electrical equipment 41 via the additional harness 65 with a simple structure having a desired length. Mounting according to the position of the electrical equipment 41 is 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 1st Embodiment, Various forms can be taken.
For example, in the additional connection member 71 shown in FIG. 3B, the basic harness side end of the additional harness 65 is directly connected to the control function unit 15 of the harness branch connection mechanism 47, and the expansion system electrical equipment side connector 69 is expanded. A connector is connected to the connector of the system electrical equipment 41.

  Further, the additional connection member 73 shown in FIG. 3C is configured such that the basic harness side end of the additional harness 65 is directly connected to the control function unit 15 of the harness branch connection mechanism 47 and the extension system electrical equipment of the additional harness 65 The side end is directly connected to the circuit of the expansion system electrical device 41 and is configured integrally with the expansion system electrical device 41. Of course, the basic harness side connector 67 provided at the basic harness side end of the additional harness 65 may be connected to the board mounted connector 61 of the harness branch connection mechanism 47 (see FIG. 3A). The basic harness side connector 67 and the expansion system electrical equipment side connector 69 are connected by a power line 75 and a GND 77.

Furthermore, like the additional connection member 79, the additional connection member 81, and the additional connection member 83 shown in FIG. 4, the control function unit 15 for controlling the operation of the expansion system electrical device 41 is added to the expansion system electrical device of the additional harness 65. It can also be provided at the side end. The extension system electrical equipment side end of the additional harness 65 and the basic harness side end are connected by a communication line 85 in addition to the power supply line 75 and the GND 77.
In the additional connecting member 79 shown in FIG. 4A, the basic harness side end of the additional harness 65 is press-connected to the press-contact blade 53 of the press-contact portion 51 in the harness branch connection mechanism 47A, and the expansion-system electrical equipment-side connector 69 is expanded. A connector is connected to the device connector 87 of the system electrical equipment 41. The extended electrical device side connector 69 is provided with a control function unit 15 having a built-in semiconductor fuse 63.

  Since the additional connecting member 13, the additional connecting member 71, the additional connecting member 73, and the additional connecting member 79 include the control function unit 15 in which the semiconductor fuse 63 is incorporated as described above, the control function unit 15 is included. The function of the control function unit 15 can be easily added to the extended electrical equipment 41 that is not present. For example, even when the extension system electrical equipment 41 is a simple seat heater unit 45, the temperature control of the seat heater unit 45 can be performed delicately by adding the control function unit 15.

In addition, the additional connecting member 81 shown in FIG. 4B has the basic harness side end of the additional harness 65 connected to the press contact blade 53 of the press contact portion 51 of the harness branch connection mechanism 47A. Are connected to the connector of the extension system electrical equipment 41 having the control function unit 89. The extended electrical device side connector 69 is provided with a control function unit 15 having a built-in semiconductor fuse 63.
The additional connection member 81 is connected to the expansion system electrical equipment 41 including the control function section 15 by connecting the expansion system electrical equipment side connector 69 including the control function section 15 to the function of the control function section 89. Further, the function of the control function unit 15 can be added, and the function of the extended system electrical equipment 41 can be greatly improved.

  The additional connecting member 83 shown in FIG. 4C is connected to the press contact blade 53 of the press contact portion 51 of the harness branch connection mechanism 47A at the basic harness side end of the additional harness 65, and the extension harness electrical equipment of the additional harness 65 The control function unit 15 provided at the side end is directly connected to the extension system electrical device 41 and is configured integrally with the extension system electrical device 41. Of course, the basic harness side connector 67 provided at the basic harness side end of the additional harness 65 in the additional connection members 79, 81, 83 described above may be connected to the board mounted connector 61 of the harness branch connection mechanism 47. (See FIG. 3 (a)).

  A branch connector 93 is connected between the additional connection member 91 shown in FIG. In this additional connection member 91, the branch connector 93 is coupled to the expansion system electrical equipment side connector 69. The branch connector 93 is provided with a plurality of (four in the illustrated example) coupling portions. The expansion system electrical equipment side connector 69 of the additional harness 65 is coupled to the first coupling portion 95 of the branch connector 93. The device connector 87 of the expansion system electrical device 41 is coupled to the second coupling portion 97 of the branch connector 93. The connector 103 of the additional harness 101 is coupled to the third coupling portion 99 of the branch connector 93. Therefore, the branch connector 93 can branch-connect other extension system electrical equipment 41 via the connector 105 of the other additional harness 101 in addition to the extension system electrical equipment 41. Of course, the additional harness 65 in the additional connection member 91 described above is connected directly to the control function unit 15 of the harness branch connection mechanism 47 at the basic harness side end and directly connected to the circuit of the branch connector 93 at the extension system electrical equipment side end. It can also be set as the structure connected. Further, the control function unit 15 in which the semiconductor fuse 63 is incorporated can be provided in the extension system electrical equipment side connector 69 or the branch connector 93 which is the extension system electrical equipment side end of the additional harness 65.

  The additional harness 65 in the additional connection member 13 and the additional connection members 71, 73, 79, 81, 83, 91 described above depends on the type of the expansion system electrical equipment 41 (whether or not it includes a control function unit or the like). The function of the wire changes. For example, as illustrated in FIG. 3, when the control function unit 15 is provided at the basic harness side end of the additional harness 65, the additional harness 65 is configured by the power supply line 75 and the GND 77. In addition, as shown in FIG. 4, when the control function unit 15 is provided at the end of the additional harness 65 on the side of the extended electrical equipment, the additional harness 65 is connected to the power line 75, the communication line 85 (or signal line), and the GND 77. Consists of.

<Variation 1 of the first embodiment>
As shown in FIG. 6, the additional connection member 107 in the vehicle electrical device connection system according to Modification 1 of the first embodiment includes an additional harness 111 having a power line 75, a GND 77, and a signal line 109, and an additional harness 111. An extension system electrical equipment side connector 69 connected to the extension system electrical equipment side end, and a harness branch connection mechanism 47 connected to the basic harness side end of the signal line 109. And the extension system electrical equipment side connector 69 of the additional harness 111 is connector-connected to the extension system electrical equipment 115 provided with the switch function part 113 which receives and switches on / off signal. In addition, one end of the signal line 109 in the additional harness 111 is branched and connected to the signal line 39 of the basic harness 11 via the harness branch connection mechanism 47, and one end of the power supply line 75 is connected to another harness 117 different from the basic harness 11. The power supply line 33 is branched and connected via a pressure joint device 119, and one end of the additional GND 77 in the additional harness 111 is body grounded.
The expansion system electrical equipment side connector 69 connected to the expansion system electrical equipment 115 is provided with a semiconductor fuse 63.

  Further, the additional connection member 121 shown in FIG. 7 includes an additional harness 123 having a power line 75, a communication line 85, and a GND 77, and an expansion system electrical device side connector 69 connected to the expansion system electrical device side end of the additional harness 123. A harness branch connection mechanism 47A connected to the basic harness side end of the communication line 85. The extension system electrical equipment side connector 69 connected to the extension system electrical equipment 41 is provided with a control function unit 15 in which a semiconductor fuse 63 is built. Further, one end of the communication line 85 in the additional harness 123 is branched and connected to the communication line 35 of the basic harness 11 via the harness branch connection mechanism 47A, and one end of the power supply line 75 is connected to another harness 117 different from the basic harness 11. The power supply line 33 is branched and connected via a pressure joint device 119, and one end of the GND 77 in the additional harness 123 is body-grounded.

That is, as shown in FIGS. 6 and 7, the basic harness 11 that is routed in the immediate vicinity of the extension system electrical device 115 or the extension system electrical device 41 to be retrofitted is only the signal line 39 or the communication line 35. If the electric capacity of the power supply line in the basic harness 11 is not sufficient, there is a case where power cannot be supplied from the basic harness 11 to the extension system electrical device 115 or the extension system electrical device 41. In such a case, the additional connection member 107 or the additional connection member 121 branches and connects the power supply line 75 to the power supply line 33 of the other harness 117 routed in the vicinity of the expansion system electrical device 115 or the expansion system electrical device 41. Thus, it is possible to easily obtain the power source of the expansion system electrical device 115 or the expansion system electrical device 41. As the other harness 117, for example, when the extension system electrical device 115 or the extension system electrical device 41 is the central door lock unit 43, a harness connected to the power window unit 27 can be used.
The additional connection member 107 shown in FIG. 6 has the semiconductor fuse 63 provided in the expansion system electrical equipment side connector 69, and the additional connection member 121 shown in FIG. 7 has the control function unit 15 incorporating the semiconductor fuse 63 in the expansion system. It is provided in the electrical equipment side connector 69.

<Modification 2 of the first embodiment>
As shown in FIG. 8, in the vehicular electrical equipment connection system according to the second modification of the first embodiment, a plurality of expansion system electrical equipment 41 and expansion system electrical equipment 125 are respectively connected to an additional connection member 13 and an additional connection member. It is retrofitted to the basic harness 11 via 127. Then, the additional connection member 127 generates a control signal for controlling the operation of the expansion system electrical device 41 in the additional connection member 13 from the expansion system electrical device 125 (for example, a mechanical switch) connected to the other end. The control function unit 129 has a signal conversion unit that receives information (ON / OFF signal by a switch operation) and converts it into a control signal. Therefore, by using, for example, a mechanical switch as the expansion system electrical device 125, a switch mechanism for operating the expansion system electrical device 41 that is retrofitted to the basic harness 11 is provided at an arbitrary position of the basic harness 11 (for example, near the instrument panel). ) Can be connected additionally.
In the additional connecting member 13, the harness branch connecting mechanism 47 is provided with the control function unit 15 including the semiconductor fuse 63.

Next, the operation of the vehicular electrical equipment connection system according to the first embodiment will be described.
In the vehicle electrical equipment connection system according to the first embodiment, useless space in the power distribution box 21 is reduced, and the power distribution box 21 is downsized. That is, in the conventional power distribution box 131 shown in FIG. 9, in addition to the fuse 132a and the relay 134a for standard electrical equipment such as the rear combination lamp unit 29 and the power window unit 27, the seat heater unit 45 and The fuse 132b and the relay 134b for the extension system electrical equipment 41 such as the audio unit 133 are attached in advance or the space 135 is secured. For this reason, the power distribution box 131 is increased in size by the amount of the fuse 132b and the relay 134b for the expansion system electrical equipment, and the cost is increased.
On the other hand, in the vehicle electrical equipment connection system according to the first embodiment described above, the relay fuse unit for controlling and protecting the seat heater unit 45 and the audio unit 133 which are the expansion electrical equipment 41 is used. A semiconductor fuse 63 (see FIG. 2) is provided in the additional connection member 13. That is, along with the addition of the expansion system electrical equipment 41, the semiconductor fuse 63 built in the control function unit 15 provided in the harness branch connection mechanism 47 is added. For this reason, it is not necessary to provide the power supply distribution box 21 with the fuse 132b or the relay 134b for the extension system electrical equipment 41 to be discarded or to secure the space 135 for providing the fuse 132b.

  In the vehicle electrical equipment connection system according to the first embodiment described above, the basic harness 11 that is commonly attached to the attachment target vehicle 17 is shared, and the expansion system that is selectively attached to the attachment target vehicle 17. The electrical equipment 41 (115, 125) is connected to an additional connection member 13 (71, 73, 79, 81, 83, 91, 107) whose one end is branched and connected to at least the communication line 35 or the signal line 39 of the basic harness 11. 121, 127). Therefore, the basic harness 11 does not have any discarded components. In addition, the wire harness itself does not necessarily need to be discarded. The subject of the present invention is to reduce the size of the power distribution box by distributing fuses and relays in the power distribution box.

Furthermore, the additional connection member 13 (71, 73, 79, 81, 83, 91, 107, 121, 127) is based on the expansion system electrical equipment 41 (115, 125) that is selectively retrofitted to the attachment target vehicle 17. Additional connection is possible at any position of the harness 11. The retrofit of the extended electrical equipment 41 (115, 125) by the additional connecting member 13 (71, 73, 79, 81, 83, 91, 107, 121, 127) is, of course, a completed vehicle when manufacturing a vehicle harness. This is also possible with respect to the basic harness 11 of the vehicle harness arranged in the cable. That is, it becomes easy to configure a wire harness corresponding to a plurality of vehicle patterns according to the addition of the expansion system electrical equipment 41 (115, 125) desired by the user (vehicle purchaser). Of course, even in that case, there are no components to be discarded.
Further, the additional connecting member 13 (71, 73, 79, 81, 83, 91, 107, 121, 127) depends on the number of expansion system electrical devices 41 (115, 125) attached to the attachment target vehicle 17. Since the branch harness is connected to the basic harness 11, no discarded components are generated in the entire vehicle electrical equipment connection system.

Moreover, in the conventional vehicle harness, due to the increase in electrical equipment (expansion electrical equipment 41), the product number of the entire wire harness has increased with the number of combinations to which electrical equipment can be attached. On the other hand, in the vehicle electrical equipment connection system according to the first embodiment, the additional connection member 13 (71, 73, 79, 81, 83, 91, 107) corresponding to the expansion electrical equipment 41 (115, 125). , 121, 127) only need to be secured. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.
Further, the additional connecting member 13 (71, 73, 79, 81, 83, 91, 107, 121, 127) includes the control function unit 15 in which the semiconductor fuse 63 is incorporated, so that the expansion system that is retrofitted to the basic harness 11 is provided. Even when the electrical equipment 41 (115, 125) does not have a control function unit, it is easy to improve the functions of the extended electrical equipment 41 (115, 125).
In addition, the control function unit 15 includes a signal generation unit that receives the signal from the communication line 35 and controls the operation of the expansion system electrical equipment 41 (115), whereby the additional connection member 13 (71, 73) is added to the basic harness 11. 79, 81, 83, 91, 107, 121), the operation of the extended electrical equipment 41 (115) to be retrofitted can be controlled.

  Further, in the vehicle electrical equipment connection system according to the first embodiment shown in FIG. 3, the basic harness 11 and the extended electrical equipment 41 are connected by the additional connection member 13 (the additional connection member 71 and the additional connection member 73). Connected. The additional connection member 13 (71, 73) includes a harness branch connection mechanism 47 having a control function unit 15 in which a semiconductor fuse 63 is built in a connection portion with the basic harness 11. The harness branch connection mechanism 47 is attached to the basic harness 11, so that the insulating covering portions covering the conductors of the power line 33, the communication line 35, and the GND 37 in the basic harness 11 are cut off by the pressure contact portions 51. The press-contact part 51 is connected to. Therefore, simply attaching the harness branch connection mechanism 47 to the basic harness 11 allows the connection between the basic harness 11 and the extended electrical device 41 to be completed easily.

  Moreover, in the vehicle electrical equipment connection system according to the first embodiment shown in FIG. 3A, the additional connection member 13 includes a basic harness side connector 67 at one end and the expansion electrical equipment side at the other end. It has an additional harness 65 with a connector 69. The basic harness side connector 67 is coupled and connected to the board mounted connector 61 which is a mating connector provided in the harness branch connection mechanism 47. That is, the additional connecting member 13 can connect the basic harness 11 and the extended electrical device 41 via the additional harness 65 having a desired length, so that the additional connecting member 13 is mounted according to the position of the extended electrical device 41. It becomes possible. As a result, the additional connection member 13 that connects the basic harness 11 and the expansion system electrical equipment 41 can easily cope with mounting differences between vehicles, different destinations, and different specifications.

  In addition, since the additional connecting member 13 includes the control function unit 15 including the semiconductor fuse 63, direct connection to the basic harness 11 and simultaneous mounting of a plurality of expansion system electrical devices 41 are possible. Thereby, function retrofit (pong attachment) and the number of systems of the basic harness 11 and the communication line 35 can be reduced.

  Furthermore, since the control function unit 15 has a built-in microcomputer, it becomes easy to deal with control of the expansion system electrical equipment 41 such as SW input, sensor input, and PWM output. Since the control with respect to the expansion system electrical equipment 41 is performed by a microcomputer, a specification change or the like can be easily handled by software.

  Moreover, in the vehicle electrical equipment connection system according to the first modification of the first embodiment shown in FIGS. 6 and 7, the system is routed in the immediate vicinity of the expansion electrical equipment 115 or the expansion electrical equipment 41 to be retrofitted. If the basic harness 11 is only the signal line 39 or the communication line 35, or if the electric capacity of the power supply line 33 in the basic harness 11 is not sufficient, the extension system electrical equipment 115 or the extension system electrical equipment 41 is in the vicinity. The power supply line 33 of the additional connection member 107 or the additional connection member 121 is branched and connected to the power supply line 33 of the other harness 117 to be routed to easily obtain the power supply of the expansion system electrical equipment 115 or the expansion system electrical equipment 41. It becomes possible. That is, it is not necessary to wire a new power supply line for the extension system electrical device 115 or the extension system electrical device 41. As a result, the power line system can be reduced.

  Moreover, according to the vehicle electrical equipment connection system according to the second modification of the first embodiment shown in FIG. 8, one additional connection member 127 among the plurality of additional connection members 13 and the additional connection members 127 is: The control function unit 129 has a signal conversion unit that receives information (for example, sensor signal, switch operation, etc.) from the expansion system electrical equipment 125 connected to the other end and converts the information into a control signal. Therefore, by using, for example, a sensor or a mechanical switch as the expansion system electrical device 125, a sensor mechanism or a switch mechanism for operating the expansion system electrical device 41 in another additional connection member 13 is added to any position of the basic harness 11. Can be connected.

  Furthermore, according to the additional connection member 13 (71, 79, 81), the extension system electrical equipment 41 attached to the attachment target vehicle 17 can be retrofitted to the basic harness 11. One end of the additional connection member 13 (71, 79, 81) is connected to the basic harness 11 via the harness branch connection mechanism 47 provided with the control function unit 15 incorporating the semiconductor fuse 63, and the extension system electrical equipment connection mechanism The other end is connected to the expansion system electrical equipment 41 via 49. Moreover, since the additional connection member 13 (71, 79, 81) is branched and connected to the basic harness 11 according to the number of the expansion system electrical equipment 41 attached to the attachment target vehicle 17, the electrical equipment connection for the vehicle is performed. There are no discarded components throughout the system. The vehicle electrical equipment connection system itself does not necessarily have to be discarded. An object of the present invention is to reduce the size of the power distribution box in the vehicle electrical equipment connection system by distributing the fuses and relays of the power distribution box.

  Further, the additional connecting member 13 (71, 79) includes the control function unit 15 in which the semiconductor fuse 63 is incorporated in at least one of the harness branching connection mechanism 47 and the expansion system electrical equipment connection mechanism 49, so that the basic harness 11, even if the extended system electrical device 41 retrofitted to 11 does not have a control function, the function of the extended system electrical device 41 can be easily improved.

Furthermore, in the additional connection member 13 (71, 73), the harness branch connection mechanism 47 is attached to the basic harness 11 so that the power wire 33, the communication line 35, and the GND 37 in the basic harness 11 are covered by the pressure contact portion 51. The pressure contact part 51 is connected to this conductor. Therefore, the additional connection member 13 (71, 73) is simply connected to the basic harness 11 by simply attaching the harness branch connection mechanism 47 provided with the control function unit 15 including the semiconductor fuse 63 to the basic harness 11. Complete.
Further, the additional connecting member 13 (71, 73) has the control function unit 15 in which the semiconductor fuse 63 is built in the harness branching connection mechanism 47, so that it can be easily attached to the basic harness 11 and can be easily used for the expansion system electrical equipment 41. Can be installed. That is, it becomes possible to retrofit the extended system electrical equipment 41 (pong attachment) and reduce the number of basic harnesses 11 and communication lines 35.

  Therefore, according to the vehicle electrical equipment connection system according to the first embodiment described above, the power distribution box 21 can be reduced in size while being compatible with the retrofit of the extended electrical equipment 41 (115, 125). .

[Second Embodiment]
Next, a vehicle electrical equipment connection system according to a second embodiment of the present invention will be described.
FIG.10 and FIG.11 is a schematic diagram of the wire harness provided with the electrical equipment connection system for vehicles which concerns on 2nd Embodiment of this invention. Constituent members similar to those of the vehicle electrical device connection system according to the first embodiment are given the same reference numerals, and detailed description thereof is omitted.
The wire harness 137 including the vehicle electrical equipment connection system according to the second embodiment is provided in the main line harness 11A connected to the power distribution box 21, the plurality of branch line harnesses 139, and the harness branch connection mechanism 47B. And a relay fuse 64 which is a relay fuse portion.

The trunk harness 11A illustrated in FIG. 12 is based on four types of electric wires (see FIG. 12) of a power line 33, a communication line 35, a GND 37, and a signal line 39 as a trunk line that are commonly attached to a plurality of attachment target vehicles. The electric wire bundle is connected to the power distribution box 21 and a plurality of electrical devices (for example, the engine control unit 25 and the connector 141). In addition to these, the main wire harness 11 </ b> A may further include other electric wires. Multiple signals are sent through the communication line 35 in the trunk harness 11A. A single signal flows through the signal line 39 in the main line harness 11A. Further, the main line harness of the present invention is not limited to one electric wire bundle shape like the main line harness 11A shown in FIG. 12, but may be an electric wire bundle shape in which a plurality of branch lines are provided on the main line.
The main line harness 11A according to the present invention is not limited to one type of main line harness 11A corresponding to a plurality of types of attachment target vehicles shown in FIGS. 10 and 11, but one type corresponding to one type of attachment target vehicle. A plurality of types of trunk harnesses 11A corresponding to attachment target vehicles of different grades or the like (for example, different destinations, different specifications) may be used.

  As shown in FIG. 11, one end of each of the branch line harnesses 139 is branched and connected to the power line 33 and at least one of the communication line 35, the GND 37, and the signal line 39 in the trunk line harness 11A. The In the illustrated example, four branch line harnesses 139 are branched and connected to the main line harness 11A. Thus, in the vehicular electrical equipment connection system according to the second embodiment, the branch harness 139 is branched and connected to form the wire harness 137 at an arbitrary position of the main harness 11A. These branch line harnesses 139 connect the main line harness 11 </ b> A and the extended electrical equipment 41, 143, respectively.

  The other end of each branch line harness 139 is connected to at least one expansion system electrical equipment 41, 143 to be retrofitted to the attachment target vehicle. The retrofitting method for retrofitting the expansion-system electrical devices 41 and 143 to the main line harness 11A via the branch line harness 139 is any method that can be connected to the main line harness 11A, such as “pressure welding”, “adhesion”, and “welding”. May be. In the second embodiment, an example will be described in which the branch harness 139 is branched and connected to the power line 33, the communication line 35, the GND 37, and the signal line 39 of the trunk harness 11A by a harness branch connection mechanism 47B described later.

As shown in FIG. 12, in the vehicle electrical device connection system according to the second embodiment, one end of the branch harness 139 is branched and connected to an arbitrary position of the trunk harness 11A by the harness branch connection mechanism 47B.
The harness branch connection mechanism 47B of the second embodiment controls and protects the press contact portion 51 connected to the conductor of the branch harness 139 and press contacted to the conductor of the main harness 11A, and the expansion system electrical equipment 41 and 143. And a relay fuse 64.
The press contact portion 51 is configured by erecting a plurality of press contact blades 53 made of a pair, for example, and is connected to a predetermined circuit of the circuit board 55. The circuit board 55 is accommodated in a case made of an insulating resin constituted by an upper case 57 and a lower case 59. The upper case 57 and the lower case 59 are connected so as to be openable and closable by, for example, a thin hinge (not shown).

The harness branching connection mechanism 47B sandwiches the power supply line 33, the communication line 35, the GND 37, and the signal line 39 in the trunk harness 11A by the upper case 57 and the lower case 59, so that the insulation coating of each line is cut by the press contact blade 53, The press-contact portion 51 is press-connected to the conductor. The harness branch connection mechanism 47B sandwiching the power supply line 33, the communication line 35, the GND 37, and the signal line 39 in the main line harness 11A is fixed at an arbitrary position of the main line harness 11A by locking the upper case 57 and the lower case 59. The
That is, according to the vehicular electrical equipment connection system according to the second embodiment, simply connecting the harness branch connection mechanism 47B to an arbitrary position of the main harness 11A, the connection between the main harness 11A and the expansion electrical equipment 41 can be easily performed. Complete. In addition, when the GND 37 of the expansion system electrical equipment 41 is body-grounded, the branch connection by the branch line harness 139 of the GND 37 in the trunk line harness 11A becomes unnecessary.

Further, the branch line harness 139 according to the second embodiment is provided with a harness branch connection mechanism 47 for branch connection to the power line 33, the communication line 35, the GND 37, and the signal line 39 in the trunk line harness 11A at one end. 17 is provided at the other end with an expansion system electrical equipment connection mechanism 49 for connecting to the expansion system electrical equipment 41 to be attached later. More specifically, as shown in FIG. 13A, the branch harness 139 includes an electric wire, a main harness side connector 67A connected to the harness branch connection mechanism 47 at the main harness side end of the electric wire, and an extension system of the electric wire. And an equipment connector 87 connected to the extended electrical equipment 41 at the electrical equipment side end. The branch line harness 139 is connected to an expansion system electrical equipment connection mechanism 49 formed by the device connector 87 together with the connector provided in the expansion system electrical equipment 41, and the trunk harness side connector 67 A is a board of the harness branch connection mechanism 47. Connected to the mounting connector 61.
That is, the branch line harness 139 of the second embodiment can connect the trunk harness 11A and the expansion system electrical equipment 41 via an electric wire having a desired length, so that it matches the position of the expansion system electrical equipment 41. Mounting becomes possible and high versatility can be obtained.

  The harness branch connection mechanism 47B of the branch line harness 139 is provided with a relay fuse 64. The relay fuse 64 is composed of, for example, a mechanical fuse and a relay, and is connected to a predetermined circuit on the circuit board 55. The relay fuse 64 is provided in the harness branch connection mechanism 47B in order to control and protect the expansion system electrical device 41, and has a relay function and a fuse function for the expansion system electrical device 41.

The form of the branch line harness 139 according to the present invention is not limited to the branch line harness 139 of the above embodiment, and various forms can be adopted.
For example, in the branch line harness 145 shown in FIG. 13B, the main wire harness side end of the electric wire is directly connected to the pressure contact portion 51 of the harness branch connection mechanism 47C, and the expansion system electrical device side connector 69 is connected to the expansion system electrical device. Forty-one device connectors 87 are connected.
Further, in the branch harness 147 shown in FIG. 13C, the main wire harness side end of the electric wire is directly connected to the press-contact part 51 of the harness branch connection mechanism 47C, and the extension system electrical equipment side end of the electric wire is expanded. It is directly connected to the circuit of the system electrical equipment 41 and is configured integrally with the extended system electrical equipment 41. Of course, the main wire harness side connector 67A provided at the main wire harness side end of the electric wire may be connected to the board mounted connector 61 of the harness branch connection mechanism 47B (see FIG. 13A).

  A branch connector 93 is connected between the branch harness 149 shown in FIG. The expansion system electrical equipment side connector 69 of the additional harness 65 is coupled to the first coupling portion 95 of the branch connector 93. The device connector 87 of the expansion system electrical device 41 is coupled to the second coupling portion 97 of the branch connector 93. The connector 103 of the additional harness 101 is coupled to the third coupling portion 99 of the branch connector 93. Therefore, the branch connector 93 can branch-connect other extension system electrical equipment 41 via the connector 105 of the other additional harness 65 in addition to the extension system electrical equipment 41.

In addition, the function of the electric wire in the branch line harness 139, the branch line harness 145, the branch line harness 147, and the branch line harness 149 described above varies depending on the type of the extension system electrical equipment 41 (whether an electronic control unit is provided or not). . For example, as shown in FIG. 13 and FIG. 14, when the extension system electrical equipment 41 having an electronic control unit (not shown) is provided at the end of the electrical system on the side of the extension system electrical equipment, the power line 75 And a communication line 85 and GND 77. Further, when the extension system electrical equipment 41 including the electronic control unit and the switch unit is provided at the end of the electrical wire on the side of the extension system electrical equipment, the electrical wire is constituted by the power line 75 and the GND 77.
Furthermore, as shown in FIG. 11, when the extension system electrical equipment 143 that operates in response to an on / off signal is provided at the end of the electrical equipment side of the electric wire and is grounded, the electric wire is connected to the power line 75 and the signal line. 109.

Next, the effect | action of the electrical equipment connection system for vehicles which concerns on 2nd Embodiment is demonstrated.
In the vehicular electrical equipment connection system according to the second embodiment, for the expansion system electrical equipment that is discarded in the power distribution box 21 as in the operation and effect of the vehicular electrical equipment connection system according to the first embodiment described above. It is not necessary to provide a fuse 135 or a relay or to secure a space 135 (see FIG. 9) for providing the fuse or relay.

Moreover, in the wire harness 137 provided with the vehicle electrical equipment connection system according to the second embodiment, the trunk harness 11A that is commonly attached to the plurality of attachment target vehicles 17 is shared, and the attachment target vehicle 17 is provided with the same. The extension system electrical equipment 41 and the extension system electrical equipment 143 to be attached are branch lines in which one end is branched and connected to the power supply line 33 and at least one of the communication line 35, the signal line 39, and the GND 37 in the trunk harness 11A. It is retrofitted through the harness 139 (145, 147, 149). Therefore, no discarded components are generated in the main harness 11A.
Furthermore, the branch harness 139 (145, 147, 149) is branched and connected to the main harness 11A according to the number of the extension system electrical equipment 41 and the extension system electrical equipment 143 attached to the attachment target vehicle 17. There are no discarded components in the entire electrical equipment connection system for vehicles.

  Further, in the conventional vehicle harness, due to the increase in the optional extension system electrical equipment 41, the product number of the entire wire harness increases with the number of combinations to which the optional extension system electrical equipment 41 can be attached. On the other hand, in the vehicle electrical equipment connection system of the second embodiment, if only the part line harness 139 (145, 147, 149) corresponding to the optional extended electrical equipment 41 and the extended electrical equipment 143 is secured. Good. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

  In the vehicular electrical equipment connection system of the second embodiment shown in FIG. 13, the branch harness 139 that connects the main harness 11A and the expansion electrical equipment 41 is connected to the relay harness 11A at the relay / A harness branch connection mechanism 47B provided with a fuse 64 is provided. The harness branch connection mechanism 47B is attached to the main line harness 11A so that the insulation covering parts covering the conductors of the power line 33, the communication line 35, the signal line 39, and the GND 37 in the main line harness 11A are respectively pressed by the press contact parts 51. Cut and connect the pressure contact portion 51 to each conductor. Therefore, simply connecting the harness branch connection mechanism 47B provided with the relay fuse 64 to the main harness 11A completes the connection between the main harness 11A having the power line 33 and the expansion system electrical equipment 41.

Therefore, according to the vehicular electrical equipment connection system according to the second embodiment, the part numbers of the wire harness 137 can be made common and the discard of the wire harness 137 can be eliminated.
[Third Embodiment]
Next, a vehicle electrical equipment connection system according to a third embodiment of the present invention will be described.
FIG.15 and FIG.16 is a schematic diagram of the vehicle electrical equipment connection system which concerns on 3rd Embodiment of this invention. Constituent members similar to those of the vehicle electrical device connection system according to the first embodiment are given the same reference numerals, and detailed description thereof is omitted.
The vehicle electrical equipment connection system according to the third embodiment includes a power distribution box 21A, a standard connector portion 153 provided in the power distribution box 21A to connect one end of the standard harness 151, and an extension harness 155. And an extension connector portion 157 provided in the power distribution box 21A for connection.

  The power distribution box 21A of the third embodiment includes a standard control unit 159 for controlling a standard electrical equipment 19 (for example, an air conditioner unit 23, a power window unit 27, etc.) that is commonly mounted on the mounting target vehicle. And an expansion control unit 161 for controlling the expansion system electrical equipment 41 selectively attached to the attachment target vehicle. Further, a gateway device 163 for relaying data transmission / reception between the in-vehicle networks and a battery power source are connected upstream of the power distribution box 21A.

The standard connector part 153 is a connector part provided in the power distribution box 21 </ b> A for connecting one end of the standard harness 151 connected to the standard electrical equipment 19.
The extension connector portion 157 is a connector portion provided in the power distribution box 21A for connecting an extension harness 155 in which one end of an additional connection member 165 connected at the other end to the extension system electrical equipment 41 is branched and connected later. It is.

The standard harness 151 of the third embodiment is connected between the standard electrical equipment 19 that is commonly attached to the vehicle to be attached and the power distribution box 21A having the standard control unit 159 that controls the standard electrical equipment 19. It is a wire harness. The standard harness 151 is a wire bundle based on a plurality of wires such as a communication line 35, a power line 33, a GND 37, and a signal line connected to the standard control unit 159, and is connected to the standard connector unit 153 of the power distribution box 21A. The power distribution box side connector 167 and the standard equipment side connector 169 connected to the standard system electrical equipment 19 are provided.
In this specification, the “standard harness” for connecting the standard electrical equipment 19 that is commonly mounted to the mounting target vehicle is not a wire harness that is common to all vehicles, but for each vehicle type. Each wire harness is indispensable for each grade (specification).

The extension harness 155 of the third embodiment is a wire harness based on three types of electric wires, that is, a communication line 35, a power supply line 33, and a GND 37 connected to the extension control unit 161 of the power distribution box 21A. 151 or installed separately from the standard harness 151 and extends to the vicinity of the expansion system electrical equipment 41 in the attachment target vehicle. In addition to this, the extension harness 155 may be further added with another electric wire such as a signal line (not shown), or may omit the GND 37. Multiple signals are sent through the communication line 35 in the extension harness 155. A single signal flows through the signal line in the extension harness 155.
Further, the extension harness 155 is provided with a power distribution box side connector 171 connected to the expansion connector portion 157 of the power distribution box 21A at one end and a termination device 173 at the other end.

Then, the expansion system electrical equipment 41 (for example, the central door lock unit 43 or the seat heater unit 45) selectively retrofitted to the attachment target vehicle is retrofitted to the expansion harness 155 via the additional connection member 165. ing.
As shown in FIG. 18A, one end of the additional connection member 165 is branched and connected to an arbitrary position of the extension harness 155 via the harness branch connection mechanism 47D, and the other end is connected to the expansion system electrical equipment connection mechanism 49. Is connected to the expansion system electrical equipment 41 via A retrofitting method for retrofitting the expansion system electrical equipment 41 to the expansion harness 155 via the additional connection member 165 includes at least the communication line 35 and the power source of the expansion harness 155 such as “pressure welding”, “adhesion”, and “welding”. Any method that can branch-connect to the line 33 may be used. In the third embodiment, an example will be described in which the additional connection member 165 is branched and connected to the power supply line 33, the communication line 35, and the GND 37 of the extension harness 155 by a later-described harness branch connection mechanism 47 </ b> D.

  The standard control unit 159 and the expansion control unit 161 in the power distribution box 21A of the third embodiment are master ECUs that electronically control the standard electrical equipment 19 and the extended electrical equipment 41, respectively. More specifically, the standard control unit 159 and the expansion control unit 161 are configured by mounting a “microcomputer”, a “semiconductor fuse”, and a “communication transceiver” on a circuit board or an electronic component. Note that the standard control unit 159 and the expansion control unit 161 in the power distribution box 21A are not limited to those separately incorporated as described above, and the standard control unit 159 is integrally provided with the expansion control unit 161 in advance. But you can.

  Moreover, the control function part 15 is provided in the additional connection member 165 of the third embodiment. In the third embodiment, the control function unit 15 having a signal generation unit that receives a signal from the communication line 35 and generates a control signal for controlling the operation of the extended electrical device 41 performs the operation of the extended electrical device 41. A slave ECU to be controlled. The control function unit 15 is provided in the additional connection member 165 in order to control the operation of the expansion system electrical equipment 41. In addition, the expansion system electrical equipment 41 may have a control function part beforehand.

As shown in FIG. 17, in the vehicle electrical equipment connection system according to the third embodiment, one end of the additional connection member 165 is branched and connected to an arbitrary position of the extension harness 155 by the harness branch connection mechanism 47D.
The harness branch connection mechanism 47D of the third embodiment controls and protects the press contact portion 51 connected to the conductor of the additional connection member 165 and press contacted to the conductor of the extension harness 155, and the expansion system electrical equipment 41. And a relay fuse 64.
The press contact portion 51 is configured by erecting a plurality of press contact blades 53 made of a pair, for example, and is connected to a predetermined circuit of the circuit board 55. The circuit board 55 is accommodated in a case made of an insulating resin constituted by an upper case 57 and a lower case 59. The upper case 57 and the lower case 59 are connected so as to be openable and closable by, for example, a thin hinge (not shown).

  The harness branch connection mechanism 47D sandwiches the power supply line 33, the communication line 35, and the GND 37 in the extension harness 155 by the upper case 57 and the lower case 59, so that the insulation coating of each line is cut by the pressure contact blade 53 and is pressed against the conductor of each line. The part 51 is press-connected. The harness branch connection mechanism 47D that sandwiches the power supply line 33, the communication line 35, and the GND 37 in the extension harness 155 is fixed at an arbitrary position of the extension harness 155 by locking the upper case 57 and the lower case 59. That is, according to the vehicle electrical device connection system according to the third embodiment, the connection between the extension harness 155 and the expansion system electrical device 41 can be achieved simply by attaching the harness branch connection mechanism 47D to any position of the expansion harness 155. Is completed easily. In addition, when the GND 37 of the expansion system electrical equipment 41 is body-grounded, the branch connection by the additional connection member 13 of the GND 37 in the expansion harness 155 becomes unnecessary.

Further, the additional connection member 165 according to the third embodiment is provided with a harness branch connection mechanism 47D for branch connection to the power supply line 33, the communication line 35, and the GND 37 in the extension harness 155 at one end, and the attachment target vehicle 17 An extension system electrical equipment connection mechanism 49 for connecting to an optional extension system electrical equipment 41 that is selectively retrofitted to is provided at the other end. More specifically, as shown in FIG. 18A, the additional connecting member 165 includes an electric wire, an extension harness side connector 175 connected to the harness branch connection mechanism 47D at the end of the electric wire extension harness, and an extension of the electric wire. An expansion system electrical equipment side connector 69 connected to the expansion system electrical equipment 41 at the system electrical equipment side end. The additional connection member 165 is connected to an expansion system electrical equipment connection mechanism 49 in which the expansion system electrical equipment side connector 69 is configured together with the equipment connector 87 provided in the expansion system electrical equipment 41, and the expansion harness side connector 175 is It is connected to the board mounting connector 61 of the harness branch connection mechanism 47D.
That is, the additional connection member 165 of the third embodiment can connect the expansion harness 155 and the expansion system electrical device 41 via the electric wire having a desired length, so that the position of the expansion system electrical device 41 is It can be mounted according to the above, and high versatility can be obtained.

  The harness branch connection mechanism 47D of the additional connection member 165 is provided with a relay fuse 64. The relay fuse 64 is composed of, for example, a mechanical fuse and a relay, and is connected to a predetermined circuit on the circuit board 55. The relay fuse 64 is provided in the harness branch connection mechanism 47D to control and protect the expansion system electrical device 41, and has a relay function and a fuse function for the expansion system electrical device 41.

Note that the form of the additional connection member 165 according to the third embodiment is not limited to the additional connection member 165 described above, and various forms can be adopted.
For example, in the additional connection member 177 shown in FIG. 18B, the end of the wire on the harness side for expansion is directly connected to the pressure contact portion 51 of the harness branch connection mechanism 47E, and the expansion system electrical equipment side connector 69 is connected to the expansion system electrical system. A connector is connected to the device connector 87 of the device 41.

In addition, the additional connection member 179 shown in FIG. 18C has the wire-side extension harness side end directly connected to the press-contact portion 51 of the harness branch connection mechanism 47E, and the wire-side expansion system electrical equipment side end It is directly connected to the circuit of the extended system electrical equipment 41 and is configured integrally with the extended system electrical equipment 41. Needless to say, the extension harness side connector 175 provided at the end of the electric wire extension harness may be connected to the board mounting connector 61 of the harness branch connection mechanism 47D (see FIG. 18A).
Further, by connecting a branch connector 93 (not shown) to the device connector 87 of the additional connection member 165, a plurality of expansion system electrical devices 41 can be branched and connected.

  Note that the functions of the electric wires of the additional connecting member 165, the additional connecting member 177, and the additional connecting member 179 described above vary depending on the type of the expansion system electrical equipment 41 (whether or not an electronic control unit is provided). For example, as shown in FIG. 18, when the control function unit 15 that controls the operation of the extension system electrical equipment 41 is provided at the extension system electrical equipment side end of the electrical wire, the electrical wire is connected to the power line 75 and the communication line 85. It is comprised by GND77. Further, when the control function unit 15 is provided at the harness branch connection mechanism 47D or at the end of the wire extension harness, the electric wire is connected to the power line 75, the GND 77, the communication line 85 according to the control content of the control function unit 15. , Selected from signal lines and the like. Further, when the expansion system electrical equipment 41 requires only the power from the expansion harness 155, the electric wire is constituted by the power line 75.

<Modification 1 of 3rd Embodiment>
FIG. 19 is a schematic diagram of a vehicular electrical equipment connection system according to Modification 1 of the third embodiment of the present invention. In addition, about the structural member similar to the structure of the vehicle electrical equipment connection system which concerns on the said 1st Embodiment, a same sign is attached | subjected and detailed description is abbreviate | omitted.
As illustrated in FIG. 19, the power distribution box 181 in the vehicle electrical device connection system according to the first modification of the third embodiment includes a standard box unit 183 having a standard control unit 159 and an expansion control unit 161. And an expansion box portion 185 that is detachably attached to the standard box portion 183.
The standard box portion 183 and the expansion box portion 185 are connected to the standard control portion 159 and the expansion control portion 161 by fitting the connector 187 and the connector 189, respectively, and constitute an integrated power distribution box 181.
The standard box portion 183 is provided with a standard connector portion 191 for connecting the power distribution box side connector 167 of the standard harness 151 connected to the standard electrical equipment 19, and the expansion box portion 185 has an expansion harness 155. An extension connector portion 193 for connecting the power distribution box side connector 171 is provided.

Therefore, for example, a common extension in which an extension harness 155 is connected to a plurality of types of standard box parts 183 to which standard electrical equipment 19 having different specifications is connected or a standard control part 159 having different specifications is mounted. A box portion 185 can be connected. In addition, a plurality of types of expansion box portions 185 in which expansion harnesses 155 having different electric wire specifications or expansion control portions 161 having different specifications are mounted are selectively connected to a common standard box portion 183. You can also
Therefore, by configuring the power distribution box 181 with the detachable standard box portion 183 and the expansion box portion 185, it is possible to provide a vehicular electrical equipment connection system with high versatility.

<Modification 2 of 3rd Embodiment>
FIG. 20 is a schematic diagram of a vehicular electrical equipment connection system according to Modification 2 of the third embodiment of the present invention. In addition, about the structural member similar to the structure of the vehicle electrical equipment connection system which concerns on the said embodiment, a same sign is attached | subjected and detailed description is abbreviate | omitted.
As shown in FIG. 20, the vehicle electrical equipment connection system according to the second modification of the third embodiment is connected to a power distribution box 21 </ b> A having a standard control unit 159 for controlling the standard electrical equipment 19. It has a gateway device 195 for relaying data transmission / reception between in-vehicle networks, and an expansion communication harness 197 connected to the gateway device 195. In the gateway device of the present invention, the power distribution box to be connected is not limited to the power distribution box 21A shown in FIG. 20, but can be connected to various known power distribution boxes.
The extension communication harness 197 according to the second modification of the third embodiment is a wire harness including the communication line 35 connected to the gateway device 195, and is attached to the standard harness 151 and the extension harness 155 described above. It is routed separately and extends to the vicinity of the expansion system electrical equipment 205 in the attachment target vehicle.
Further, the expansion communication harness 197 is provided with a connector 199 connected to the gateway device 195 at one end and a termination device 173 at the other end.

An expansion system electrical device 205 that is selectively retrofitted to the attachment target vehicle is retrofitted to the expansion communication harness 197 via the additional connection member 201.
In the additional connection member 201 of Modification 2 of the third embodiment, one end of the communication line 35 is branched and connected to the communication line 35 of the expansion communication harness 197 via the harness branch connection mechanism 47F, and one end of the power supply line 33 is connected to the additional connection member 201. It is connected to a power source via another harness, and one end of the GND 37 is body grounded.

  Further, the additional connecting member 201 is provided with a control function unit 203 including a semiconductor fuse 63 which is a relay / fuse unit. In the second modification of the third embodiment, the control function unit 203 having a signal generation unit that receives a signal from the gateway device 163 and generates a control signal for controlling the operation of the extended system electrical device 205 includes: The ECU controls the operation of 205. The control function unit 203 is provided in the additional connection member 201 in order to control the operation of the extended electrical device 205.

In the additional connection member 201 of Modification 2 of the third embodiment, one end of the communication line 35 is branched and connected to an arbitrary position of the extension communication harness 197 via the harness branch connection mechanism 47F, and the other end is extended system electrical equipment. Connected to the device 205. A retrofit method for retrofitting the expansion system electrical device 205 to the expansion communication harness 197 via the additional connection member 201 is branch connection to the communication line 35 in the expansion communication harness 197, such as “pressure welding”, “adhesion”, and “welding”. Any method can be used.
Since the extension system electrical equipment 205 is directly connected to the power source via another power line 75 and is directly grounded via the GND 77, the additional connection member 201 branched and connected to the extension communication harness 197 is , The communication line 85 alone.

Next, the effect | action of the electrical equipment connection system for vehicles which concerns on 3rd Embodiment is demonstrated.
In the vehicular electrical equipment connection system according to the third embodiment, the additional connection member 165 is provided with a control function unit 15 including a semiconductor fuse 63 for controlling and protecting the extended electrical equipment 41. That is, the semiconductor fuse 63 is added together with the addition of the extended system electrical equipment 41. For this reason, it is not necessary to provide the power distribution box 21 with a fuse or a relay for the extended electrical equipment 41 to be discarded or to secure a space for providing it.

In the vehicular electrical equipment connection system according to the third embodiment of the present invention, the standard harness 151 that connects the standard electrical equipment 19 and the power distribution box 21 that are commonly attached to the attachment target vehicle is shared. Is done. When the extension system electrical equipment 41 is selectively attached to the attachment target vehicle 17, the communication line 35, the power supply line 33, and the GND 37 of the extension harness 155 connected to the extension connector portion 157 of the power distribution box 21 are connected. It is retrofitted through an additional connecting member 165 (177, 179) whose one end is branched. Further, when the extension system electrical equipment 41 cannot be attached to the attachment target vehicle, the extension harness 155 can be omitted without being connected to the extension connector portion 157 of the power distribution box 21. Therefore, the standard harness 151 and the extension harness 155 do not have any discarded components.
In addition, in the vehicular electrical equipment connection system according to the third embodiment, the extension harness 155 may be left behind if the power distribution box 21A can be downsized. Therefore, the extension harness 155 may remain connected to the extension connector portion 157 of the power distribution box 21A.

Furthermore, the expansion system electrical equipment 41 that is selectively retrofitted to the attachment target vehicle can be additionally connected to any position of the expansion harness 155 via the additional connection member 165. The extension electrical equipment 41 can be retrofitted to the extension harness 155 not only when the vehicle harness is manufactured, but also for the extension harness 155 of the vehicle harness routed in the completed vehicle.
Further, by using the extension harness 155, the extension system electrical equipment 41 can be easily retrofitted without changing the standard harness 151. That is, the extension harness 155 can easily change the specifications of the communication line 35 or the power supply line 33 in accordance with the number and type of the extension system electrical equipment 41.

  In addition, in the conventional vehicle harness, the number of the wire harness as a whole increases with the number of combinations to which the extension system electrical device 41 can be attached due to the increase in the extension system electrical device 41. On the other hand, in the vehicle electrical equipment connection system of the third embodiment, the additional harness 155 is added to the standard harness 151 and the extension harness 155 is connected to the extension harness 155 in a post-branch manner corresponding to the extended electrical equipment 41. The product number of only the member 165 (177, 179) may be secured. Thereby, management of manufactured parts becomes easy, and reduction of wire harness manufacturing cost can be aimed at.

  In the vehicle electrical device connection system of the third embodiment shown in FIG. 17, the additional connection member 165 (177, 179) for connecting the expansion harness 155 and the expansion system electrical device 41 is connected to the expansion harness 155. The connection portion is branched and connected by a harness branch connection mechanism 47D. The harness branch connection mechanism 47D is attached to the extension harness 155, so that the insulation covering portions covering the conductors of the power supply line 33, the communication line 35, and the GND 37 in the extension harness 155 are cut by the press contact portions 51, respectively. A pressure contact portion 51 is connected to each conductor. Therefore, simply attaching the harness branch connection mechanism 47D to the extension harness 155 completes the connection between the extension harness 155 and the extension system electrical equipment 41.

  Note that the control function unit 15 provided in the additional connection member 165 (177, 179) incorporates the semiconductor fuse 63, so that the expansion system electrical equipment 41 can be directly connected to the expansion harness 155 or a plurality of simultaneous connections. Can be installed. As a result, it is possible to retrofit functions (pong attachment) and reduce the number of systems of the extension harness 155 and the communication line 35.

  In the vehicular electrical equipment connection system according to Modification 1 of the third embodiment shown in FIG. 19, a common extension box portion 185 in which an extension harness 155 is connected to a plurality of types of standard box portions 183. Or a plurality of types of expansion box portions 185 can be selectively connected to a common standard box portion 183, thereby increasing versatility.

  In the vehicular electrical equipment connection system according to Modification 2 of the third embodiment of the present invention shown in FIG. 20, when the expansion system electrical equipment 205 is selectively attached to the attachment target vehicle, the gateway device 195 is used. The communication line 35 of the extension communication harness 197 connected to is attached later via an additional connection member 201 in which only one end of the communication line 85 is branched and connected. Further, when the extension system electrical device 205 is not attached to the attachment target vehicle, the extension communication harness 197 can be omitted without being connected to the gateway device 195. Therefore, the gateway device 195 and the extension communication harness 197 do not have any discarded components.

  Furthermore, the expansion system electrical equipment 205 selectively attached to the attachment target vehicle is additionally connected to an arbitrary position of the expansion communication harness 197 via the additional connection member 201 having the control function unit 203 incorporating the semiconductor fuse 63. Is possible. The extension electrical equipment 205 can be retrofitted to the extension communication harness 197 as well as to the extension communication harness 197 of the vehicle harness routed in the completed vehicle as well as the manufacture of the vehicle harness.

Further, by using the extension communication harness 197, the extension system electrical device 205 can be easily retrofitted without changing the harness connecting the gateway device 195 and the power distribution box 21A. That is, the extension communication harness 197 can easily change the specifications of the communication line 35 according to the number and type of the extension system electrical devices 205.
Accordingly, when the expansion system electrical device 205 that needs to be connected only to the communication line 35 is selectively attached to the vehicle to be attached, the gateway is connected via the additional connection member 201 having the control function unit 203 incorporating the semiconductor fuse 63. It only needs to be retrofitted to the expansion communication harness 197 connected to the device 195, and there is no need to go through the power distribution box 21A.

  Therefore, according to the electrical equipment connecting system for a vehicle according to the third embodiment described above, it is possible to make the part numbers of the wire harnesses common and to eliminate the discarding of the wire harnesses.

[Fourth Embodiment]
Next, a fourth embodiment of the vehicle electrical equipment connection system according to the present invention will be described. Constituent members similar to those in the above embodiments are given the same reference numerals, and detailed description thereof is omitted. In practice, an enormous number of electrical devices are mounted on one vehicle, but only the main part is shown in FIG. 21 for easy understanding.
In the configuration shown in FIG. 21, a standard electrical device 207 and a standard electrical device 209 are mounted on a vehicle as standard electrical devices, and an extended electrical device 211 and an extended electrical device are mounted as optional electrical devices. The case where the apparatus 213 exists is assumed.

  As specific examples of the standard electrical equipment 207 and the standard electrical equipment 209, electrical equipment essential for automobiles such as headlamps and wipers is assumed. Further, as a specific example of the extended system electrical device 211 and the extended system electrical device 213, a security device, a rear fog lamp, and the like are assumed. That is, the standard system electrical device 207 and the standard system electrical device 209 are mounted on all vehicles, and the expansion system electrical device 211 and the expansion system electrical device 213 differ in vehicle type, grade, and destination (for domestic / overseas use, etc.). Depending on the case, it may or may not be installed.

  In the configuration shown in FIG. 21, standard electrical equipment 207 and standard electrical equipment 209, and extended electrical equipment 211 and extended electrical equipment 213 are connected to trunk harness 11B. The main harness 11B is mainly used for supplying power to each electrical equipment and transmitting electric signals for standard system control.

  The trunk harness 11B shown in FIG. 21 includes two power lines 215 and 217, which are power lines, and one communication line 221 as a basic configuration. Each of the power supply line 215, the power supply line 217, and the communication line 221 is covered with an electrically insulating coating so as not to be in electrical contact with each other or the surroundings. In addition, the actual main harness 11B may further include a sub-harness (not shown). For example, when a communication line for connecting a communication line connected to a wired communication interface of an extension system electrical device (not shown) and a standard system control ECU 245 described later is included in the trunk harness 11B separately from the communication line 221. There is also.

  The on-vehicle main power source 223 is configured by a battery, a generator (alternator), or the like mounted on the vehicle. The power supply power (for example, + 12V) supplied by the on-vehicle main power supply 223 is distributed to a plurality of systems inside the power distribution box 21B and is supplied to the main harness 11B connected under the power distribution box 21B. That is, power supply power is supplied to each of the power supply line 215 and the power supply line 217. The supplied current can be managed in an independent state for each system of the power supply line 215 and the power supply line 217.

  In the configuration shown in FIG. 21, the power supply line 225 of the standard electrical equipment 207 is connected to the power supply line 215, and the power supply line 227 of the standard electrical equipment 209 is connected to the power supply line 217. Further, the power line 229 of the extension system electrical device 211 is connected to the power line 215 at the harness branch connection mechanism 231 in the vicinity thereof, and the power line 233 of the extension system electrical device 213 is connected to the harness branch connection mechanism 235 in the vicinity thereof. Is connected to the power line 217.

  The power supply line 229 and the harness branch connection mechanism 231 constitute an additional connection member 237. Further, the power line 233 and the harness branch connection mechanism 235 constitute an additional connection member 239. The harness branch connection mechanism 231 and the harness branch connection mechanism 235 are provided with relay fuses 64 provided to control and protect the extension system electrical devices 211 and 213.

  On the other hand, the communication line 241 of the standard electrical equipment 207 is connected to the communication line 221 of the trunk harness 11B, and the communication line 243 of the standard electrical equipment 209 is branched from the communication line 221. That is, the standard system control ECU 245 (Electronic Control Unit) that controls the standard system electrical equipment 207 and the standard system electrical equipment 209 is connected to the standard system electrical equipment 207 and the standard system via the communication line 221 of the trunk harness 11B. It is connected to the electrical equipment 209.

  In addition, each of the extended electrical device 211 and the extended electrical device 213 is equipped with a wireless communication function. The extended system control ECU 247 that controls the extended system electrical device 211 and the extended system electrical device 213 includes a wireless communication interface 249 (I / F). That is, the expansion system control ECU 247 can secure a wireless communication line with each of the expansion system electrical device 211 and the expansion system electrical device 213 and perform bidirectional data communication for control.

  Therefore, when the expansion system electrical device 211 or the expansion system electrical device 213 is mounted on the vehicle, the expansion system control ECU 247 can be obtained by simply connecting these power supply lines (power supply line 229, power supply line 233) to the main harness 11B. Can control the expansion system electrical equipment 211 or the expansion system electrical equipment 213.

  Thus, a standard system configured to include the standard electrical equipment 207, the standard system control ECU 245, and the main line harness 11B, and an expansion configured to include the expansion system electrical equipment 41, the expansion system control ECU 247, and the main line harness 11B. A system system is formed.

  For the electrical connection between the power supply line 229 and the power supply line 215 in the harness branch connection mechanism 231, any connection method such as “pressure welding”, “adhesion”, and “welding” may be used. The same applies to the electrical connection between the power supply line 233 and the power supply line 217 in the harness branch connection mechanism 235.

  Moreover, about the connection form of the trunk line harness 11B, the expansion system electrical equipment 211, and the expansion system electrical equipment 213, the form which connects electric wires (WtoW), the form which connects via a short electric wire (Picktail W / H) A configuration in which the electrical equipment is directly attached to the main harness 11B can be considered. By such a connection method, optional extension system electrical equipment 211 and extension system electrical equipment 213 can be retrofitted.

  Various wireless communication standards can be used for the wireless communication interface 249. For example, it is assumed that a standard standardized as IEEE 802.15.1, that is, Bluetooth (registered trademark) is adopted.

  The power supply power required by the standard system control ECU 245, the extended system control ECU 247, the wireless communication interface 249, and the like is supplied from the output of the power distribution box 21B via a sub-harness (not shown).

<Configuration of Standard Electrical Equipment 207 and Standard Electrical Equipment 209>
In the configuration example illustrated in FIG. 21, the standard electrical equipment 207 includes a load 251, a switch 253, a sensor 255, a power supply unit 257, a driver 259, a wired communication interface 261, and a signal processing circuit 263. The presence and number of each of the load 251, the switch 253, and the sensor 255 that are actually incorporated in the standard electrical equipment 207 are changed as necessary. The configuration of the standard electrical equipment 207 is the same.

  Specific examples of the load 251 include a lamp, an electric motor, and a relay. This can be driven by energizing the load 251. A driver 259 is provided to control energization of the load 251. The driver 259 includes a switching element such as a transistor, for example, and can turn on / off the load 251 and control the duty of the current according to the control signal.

  That is, when the switching element of the driver 259 is turned on, the power supply power supplied to the power supply line 215 is supplied to the load 251 via the power supply line 225, the power supply unit 257, and the driver 259. A control signal for controlling the load 251 is output from the standard system control ECU 245 and input to the driver 259 via the communication line 221, the communication line 241, and the wired communication interface 261. Note that, as indicated by a dotted line in FIG. 21, a control signal received by the wired communication interface 261 may be input to the driver 259 via the signal processing circuit 263.

  The switch 253 outputs an electrical signal that turns on and off in accordance with, for example, a user operation. The sensor 255 outputs electrical signals representing various measured values and states. The signal processing circuit 263 periodically processes electrical signals output from the switch 253 and the sensor 255, for example, to generate information suitable for data communication.

  The wired communication interface 261 establishes a data communication path with the standard system control ECU 245 via the communication line 221 and the communication line 241. Further, the wired communication interface 261 receives a control signal output from the standard system control ECU 245 and applies it to the driver 259, and transmits various information output from the signal processing circuit 263 to the standard system control ECU 245 by data communication.

  In the configuration shown in FIG. 21, since there is no GND in the trunk harness 11B, for example, a metal vehicle body is used as the ground. That is, the ground side of the power source of the standard electrical equipment 207 is connected to the ground point of the vehicle body via the GND 283.

<Configuration of Extended System Electrical Equipment 211 and Extended System Electrical Equipment 213>
In the configuration example illustrated in FIG. 21, the extended electrical device 211 includes a load 265, a switch 267, a sensor 269, a power supply unit 271, a driver 273, a wireless communication interface 275, and a signal processing circuit 277. The presence / absence and number of each of the load 265, the switch 267, and the sensor 269 that are actually incorporated in the extended electrical device 211 are changed as necessary. The configuration of the extended electrical device 213 including the antenna 282 is the same.

  Specific examples of the load 265 include a lamp, an electric motor, and a relay. This can be driven by energizing the load 265. A driver 273 is provided to control energization of the load 265. The driver 273 incorporates a switching element such as a transistor, for example, and can perform on / off of the load 265 and duty control of the energization according to a control signal.

  That is, when the switching element of the driver 273 is turned on, power supply power supplied to the power supply line 215 is supplied to the load 265 via the power supply line 229, the power supply unit 271, and the driver 273. A control signal for controlling the load 265 is output from the extended system control ECU 247 and input to the driver 273 via the wireless communication interface 249, the antenna 279, the antenna 281, and the wireless communication interface 275. Note that, as indicated by a dotted line in FIG. 21, a control signal received by the antenna 281 may be input to the driver 273 via the wireless communication interface 275 and the signal processing circuit 277.

  The wireless communication interface 275 is configured to conform to the communication standard of the wireless communication interface 249 so that a wireless communication line can be secured between the wireless communication interface 275 and the wireless communication interface 249.

  The switch 267 outputs an electrical signal that turns on and off in accordance with, for example, a user operation. The sensor 269 outputs electrical signals representing various measurement values and states. The signal processing circuit 277 periodically processes electrical signals output from the switch 267 and the sensor 269, for example, and generates information suitable for data communication.

  The wireless communication interface 275 secures a data communication path between the extended system control ECU 247 and the extended system electrical device 211 via a wireless communication line. The wireless communication interface 275 receives a control signal output from the extended system control ECU 247 and applies the control signal to the driver 273, and transmits various information output from the signal processing circuit 277 to the extended system control ECU 247 by data communication.

  In the configuration shown in FIG. 21, since there is no GND in the trunk harness 11B, for example, a metal vehicle body is used as the ground. That is, the ground side of the power supply of the expansion system electrical equipment 211 is connected to the ground point of the vehicle body via the GND 283.

<Configuration of power distribution box 21>
FIG. 22 shows an internal configuration of the power distribution box 21B incorporating the electronic fuse function. The power distribution box 21B shown in FIG. 22 includes an IPD 285 (Intelligent Power Device), an IPD 287, a microcomputer 289 (CPU), a non-volatile memory 291, a voltage adjustment circuit 293, an input-side power line 295, and a connector 297. Yes. The power distribution box 21B is connected to the ground point of the vehicle body via the GND 283.

  The power supply power (for example, +12 V) supplied from the on-vehicle main power supply 223 is supplied to the input-side power supply line 295 in the power distribution box 21B via the main fuse 299. The output of the input-side power line 295 is branched into a plurality of systems, and one system is output to the power line 215 of the trunk harness 11B via the IPD 285. Another system is output to the power line 217 of the trunk harness 11B via the IPD 287. That is, the power supply supplied to the input-side power supply line 295 is distributed to a plurality of output systems (power supply line 215 and power supply line 217) and each output. Further, a part of the power of the input side power supply line 295 is also supplied to the input of the voltage adjustment circuit 293.

  Each of the IPD 285 and the IPD 287 includes a peripheral circuit such as an output current detection function, a gate driver, and various protection circuits in addition to an element (power) for switching the energization of the load 251.

  The microcomputer 289 operates based on the power supply supplied from the voltage adjustment circuit 293, and implements a control function required for the power distribution box 21B by executing a program incorporated in advance. This control function includes the function of an electronic fuse.

  As shown in FIG. 22, the microcomputer 289 is connected to the IPD 285, the IPD 287, and the nonvolatile memory 291. The microcomputer 289 can control the power flowing to the load side by controlling the switching elements of the IPD 285 and IPD 287 by turning on / off the control signals output to the IPD 285 and IPD 287 or by controlling the duty of the pulses.

  Further, the microcomputer 289 constantly monitors the magnitude of the current flowing to the load side for each output system, and shuts off the current by turning off the corresponding switching element when an overcurrent is detected. That is, it functions as an electronic fuse. A threshold value for identifying whether the monitored current is an overcurrent is written in the nonvolatile memory 291 as rewritable data. Therefore, the microcomputer 289 compares the current value detected by each IPD 285 and IPD 287 with the threshold value stored in the nonvolatile memory 291 to identify whether or not there is an overcurrent.

  The nonvolatile memory 291 is constituted by, for example, an EEPROM (Electrically Erasable Programmable Read-Only Memory), and can self-hold written data even when no power is supplied. Also, the written data can be electrically erased and rewritten with new data. The nonvolatile memory 291 according to the fourth embodiment holds data representing a threshold value of the electronic fuse function.

  That is, a threshold for identifying whether the magnitude of the load current flowing from the IPD 285 to the power supply line 215 is an overcurrent, or to identify whether the magnitude of the load current flowing from the IPD 287 to the power supply line 217 is an overcurrent. Are written in the nonvolatile memory 291.

  The threshold data stored in the nonvolatile memory 291 is updated manually or automatically so as to match the current consumption in the actual configuration. For example, the overcurrent threshold as a condition for shutting off the IPD 285 is adjusted according to the magnitude of current consumed by the standard electrical equipment 207 and the extended electrical equipment 211 that are actually connected to the power line 215. The overcurrent threshold as a condition for shutting off the IPD 287 is adjusted according to the magnitude of current consumed by the standard electrical equipment 209 and the extended electrical equipment 213 that are actually connected to the power line 217.

  The voltage adjustment circuit 293 generates power supply power of a stable DC voltage (for example, +5 V) required by a circuit such as the microcomputer 289 from the power supply voltage supplied to the input-side power supply line 295.

Next, the operation of the vehicle electrical device connection system according to the fourth embodiment will be described.
In the vehicular electrical equipment connection system according to the fourth embodiment, similar to the effects of the vehicular electrical equipment connection system according to the first embodiment described above, the extended electrical equipment 211 that is discarded in the power distribution box 21B, There is no need to provide a mechanical fuse and relay for 213 or to secure a space for providing it. As a result, useless space in the power distribution box 21B is reduced, and the power distribution box 21B is downsized.

  The vehicle electrical equipment connection system shown in FIGS. 21 and 22 has the following advantages over the conventional system.

(1) When an optional extension system electrical device 211 and an extension system electrical device 213 are retrofitted to a vehicle on which only standard system electrical equipment (standard system electrical equipment 207, standard system electrical equipment 209) is mounted Further, it is possible to perform additional connection using the trunk wire harness 11B having the standard configuration as it is. Therefore, the connection work in the case of retrofitting becomes easy. Moreover, since the retrofit of various functions is easy, the added value of the vehicle is improved.

(2) Since a plurality of electrical equipment can be commonly connected to the same electric wire (power supply line 215, power supply line 217), the number of electric wires (power supply line 215 to communication line 221) constituting the standard main trunk harness 11B is Reduced. Thereby, since the kind (article number) of the main line harness 11B which should be prepared in advance can also be reduced significantly, cost reduction is attained.

(3) A dedicated electric wire for connecting the optional extension system electrical equipment 211 and the extension system electrical equipment 213 is not included in the main harness 11B. Therefore, in a vehicle having a specification in which the expansion system electrical device 211 and the expansion system electrical device 213 are not connected, useless parts (such as electric wires and connectors) that are discarded in the main harness 11B are not generated, leading to cost reduction.

(4) The function of the electronic fuse mounted in the power distribution box 21B is that the standard system electrical equipment 207 and standard system electrical equipment 209 that connect the overcurrent threshold of each output system to the main line harness 11B, and the expansion system electrical equipment 211 And it can change according to the number and specification of the expansion system electrical equipment 213. Therefore, it is not necessary to change the hardware configuration inside the power distribution box in accordance with the presence / absence of the extension system electrical devices 41 and 40B and the change of specifications.

(5) Since the expansion system control ECU 247 is connected to the expansion system electrical equipment 211 and the expansion system electrical equipment 213 by a wireless communication line, the expansion system electrical equipment 211, the expansion system electrical equipment 213, and the main harness 11B Connection locations are reduced, and the number of electric wires constituting the main harness 11B can be further reduced. Therefore, the type (article number) of the main line harness 11B to be prepared in advance can be greatly reduced, leading to cost reduction.

<Modification 1 of 4th Embodiment>
The configuration of Modification 1 of the vehicle electrical device connection system is shown in FIG. In the vehicular electrical equipment connection system of FIG. 23, a GND 303 is provided in place of the power line 217 in the main harness 11B connected under the power distribution box 21B.

  Therefore, in the configuration of FIG. 23, the power supply units (power supply unit 257, power supply unit 271) of the standard electrical equipment 207, the standard electrical equipment 209, the extended electrical equipment 211, and the extended electrical equipment 213 are the trunk harness 11B. The power supply line 215 and the GND 303 are connected to each other.

<Modification 2 of 4th Embodiment>
FIG. 24 shows the configuration of Modification 2 of the vehicle electrical device connection system. In the vehicular electrical equipment connection system of FIG. 24, it is assumed that the extended electrical equipment 211 and the extended electrical equipment 213 are configured only with simple electrical components such as a load 265, a switch 267, and a sensor 269. Yes.

  Therefore, in the configuration of FIG. 24, the dedicated expansion system adapter 305 is used to connect the expansion system electrical equipment 211 to the main line harness 11B and the expansion system control ECU 247. Also, a dedicated expansion system adapter 307 is used to connect the expansion system electrical equipment 213 to the main harness 11B.

  The expansion system adapter 305 includes a power supply unit 271, a driver 273, a wireless communication interface 275, and a signal processing circuit 277, similar to the expansion system electrical device 211 in FIG. 21. The configuration of the extended system adapter 307 is the same as that of the extended system adapter 305.

  As shown in FIG. 24, by interposing the expansion system adapter 305 or the expansion system adapter 307 between the main harness 11B and the expansion system electrical equipment 211, various types of electrical equipment can be added to the system on the vehicle. It becomes possible.

<Modification 3 of 4th Embodiment>
FIG. 25 shows the configuration of Modification 3 of the vehicle electrical device connection system. In the vehicle electrical equipment connection system of FIG. 25, a plurality of power distribution boxes 21B and 21C are provided, and the power distribution box 21B is connected to the standard electrical equipment 19 and the standard system via the power lines 215 and 217. In this configuration, power is supplied to the electrical equipment 209, and the power distribution box 21C supplies power to the extended electrical equipment 211 and the extended electrical equipment 213 via the power supply line 311 and the power supply line 313. In the vehicle electrical equipment connection system of FIG. 25, the power supply line 311 and the power supply line 313 are retrofitted to the power distribution box 21C when the extended electrical equipment 211 and the extended electrical equipment 213 are expanded (added) as electrical equipment. It is what is done. For this reason, the power supply line 311 and the power supply line 313 do not exist in a system in which the extended electrical device 211 and the extended electrical device 213 are not expanded. Therefore, in a vehicle having a specification that does not connect the expansion system electrical device 211 and the expansion system electrical device 213, wasteful parts (such as electric wires and connectors) that are discarded are not generated, leading to cost reduction.

  In the vehicle electrical equipment connection system shown in FIG. 25, the power distribution box 21C may be installed as a standard, regardless of whether or not the extended electrical equipment 211 and the extended electrical equipment 213 are extended. The extended electrical equipment 211 In addition, the power distribution box 21C may be added when the expansion system electrical device 213 is expanded (added). In the latter case, a wasteful power distribution box 21C is not generated in a vehicle having a specification in which the expansion system electrical device 211 and the expansion system electrical device 213 are not connected, which leads to cost reduction.

<Modification 4 of 4th Embodiment>
The configuration of Modification 4 of the electrical equipment connecting system for vehicles is shown in FIG. In the vehicle electrical equipment connection system of FIG. 26, the main harness 11B includes two power lines 215 and 217, one communication line 221, two power lines 311 and 313. Contains. The power source power (for example, + 12V) supplied from the vehicle main power source 223 is supplied to the power source line 215 and the power source line 217, and the power source line 311 and the power source line 313, respectively. In this system, the power supply line 225 of the standard electrical equipment 207 is connected to the power supply line 215, and the power supply line 227 of the standard electrical equipment 209 is connected to the power supply line 217. Further, the power supply line 229 of the expansion system electrical equipment 211 is connected to the power supply line 311, and the power supply line 233 of the expansion system electrical equipment 213 is connected to the power supply line 313.

  In the vehicle electrical equipment connection system of FIG. 26, the power supply line 311 and the power supply line 313 are retrofitted to the power distribution box 21B when the extended electrical equipment 211 and the extended electrical equipment 213 are expanded (added) as electrical equipment. It is what is done. For this reason, the power supply line 311 and the power supply line 313 do not exist in a system in which the extended electrical device 211 and the extended electrical device 213 are not expanded. Therefore, in a vehicle having specifications that do not connect the expansion system electrical devices 211 and 213, useless parts (such as electric wires and connectors) that are discarded in the main harness 11B are not generated, leading to cost reduction. Moreover, in the vehicle of the specification which does not connect the expansion system electrical equipment 211 and the expansion system electrical equipment 213, since the electric wire for expansion system electrical equipment does not exist in the trunk wiring harness 11B, the wire diameter of the trunk wiring harness 11B should be made small. Can do.

Therefore, according to the vehicle electrical equipment connection system according to the fourth embodiment, the relay fuse 64 for controlling and protecting the extended electrical equipment 211 and 213 is provided in the additional connection members 237 and 239. That is, the relay fuse 64 is added together with the addition of the extension system electrical devices 211 and 213. For this reason, it becomes unnecessary to provide the power distribution box 21B with a fuse or a relay for the extension system electrical equipment to be discarded or to secure a space for providing it.
Thus, according to the vehicle electrical device connection system according to the fourth embodiment, the power distribution box 21B can be reduced in size while corresponding to the retrofit of the extension system electrical devices 211 and 213.

Here, the features of the above-described embodiment of the vehicle electrical device connection system according to the present invention will be summarized and listed below.
[1] Basic connection between a plurality of standard electrical equipment (19) connected to a power distribution box (21) to which power is supplied by a main power source on the vehicle and attached in common to the attachment target vehicle (17). A harness (11);
One end of the basic harness (11) is branched and connected to at least the communication line (35) or the signal line (39), and at least one expansion system electrical equipment is selectively retrofitted to the attachment target vehicle (17). An additional connection member (13) whose other end is connected to the device (41);
A relay fuse portion (semiconductor fuse 63) provided in the additional connection member (13) for controlling and protecting the extended electrical equipment (41);
A vehicle electrical equipment connection system comprising:
[2] The vehicle electrical equipment connection system according to [1] above,
A control function section (15) provided in the additional connection member (13) for controlling the expansion system electrical equipment (41) includes the relay / fuse section (semiconductor fuse 63). Electrical equipment connection system.
[3] A main harness (11A) connected to a power distribution box (21) to which power is supplied by a main power source on the vehicle and attached in common to a plurality of attachment target vehicles;
At least one of the communication line (35), the power line (33), the signal line (39), and the ground line (GND 37) in the trunk harness (11A) is branched and connected at one end, and A branch harness (139) whose other end is connected to at least one expansion system electrical equipment (41, 143) attached to the vehicle to be attached;
A relay fuse portion (relay fuse 64) provided in the branch harness (139) for controlling and protecting the expansion system electrical equipment (41, 143);
A vehicle electrical equipment connection system comprising:
[4] The vehicle electrical equipment connection system according to (3) above,
To press-connect to at least one of the communication line (35), the power line (33), the signal line (39), and the ground line (GND 37) provided at one end of the branch line harness (139). The harness branch connection mechanism (47B) includes the relay / fuse portion (relay / fuse 64).
[5] A standard control unit (159) for controlling the standard electrical equipment (19) attached in common to the attachment target vehicle, and a power source supplied by the vehicle main power supply to the attachment target vehicle (17). A power distribution box (21A) having an expansion control unit (161) for controlling an expansion system electrical equipment (41) selectively attached later;
A standard connector portion (153) provided in the power distribution box (21A) for connecting one end of a standard harness (151) connected to the standard electrical equipment (19);
An extension harness (at least one of a communication line (35) and a power supply line (33) in which one end of an additional connection member (165) whose other end is connected to the expansion system electrical equipment (41) is branched and connected later. 155) an extension connector portion (157) provided in the power distribution box (21A) for connecting,
A relay fuse portion (relay fuse 64) provided in the additional connection member (165) for controlling and protecting the expansion system electrical equipment (41);
A vehicle electrical equipment connection system comprising:
[6] A power distribution box (21B) to which power is supplied by the main power source on the vehicle;
Standard electrical equipment (207, 209),
Extended electrical equipment (211 and 213),
Power supply lines (power supply line 215 and power supply line 217) connected to the power distribution box (21B) and capable of supplying power to the electrical equipment;
A standard control ECU (245) for controlling the standard electrical equipment (207, 209);
An expansion system control ECU (247) for controlling the expansion system electrical equipment (211 and 213);
With
The expansion system electrical equipment (211 and 213) is connected to the power supply lines (power supply lines 215 and 217) by additional connection members (237 and 239) and supplied with power,
A relay fuse part (relay fuse 64) for controlling and protecting the expansion system electrical equipment (211 and 213) is provided in the additional connection member (237 and 239),
The expansion system electrical equipment (211, 213) and the expansion system control ECU (247) can transmit and receive signals by wireless communication, and the expansion system control ECU (247) can control signals by wireless communication. To control the expansion system electrical equipment (211, 213) by transmitting
The vehicle electrical equipment connection system characterized by the above-mentioned.

  The vehicular electrical equipment connection system 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 ... Basic harness 13 ... Additional connection member 15 ... Control function part 17 ... Installation object vehicle 19 ... Standard system electrical equipment 21 ... Power distribution box 33 ... Power supply line 35 ... Communication line 37 ... GND (ground wire)
39 ... Signal line 41 ... Expansion system electrical equipment 47 ... Harness branch connection mechanism 63 ... Semiconductor fuse (relay fuse)

Claims (6)

A basic harness that connects between a plurality of standard electrical devices that are connected to a power distribution box that is supplied with power by a main power source on the vehicle and that are mounted in common on the vehicle to be mounted;
An additional connection member having one end branched and connected to at least a communication line or a signal line of the basic harness, and having the other end connected to at least one expansion-system electrical device selectively attached to the attachment target vehicle; ,
A relay / fuse part provided in the additional connecting member to control and protect the expansion system electrical equipment;
A vehicle electrical equipment connection system comprising: The vehicle electrical equipment connection system according to claim 1,
An electrical equipment connection system for a vehicle, wherein a control function part provided in the additional connection member for controlling the extended electrical equipment has the relay / fuse part. A main harness that is connected to a power distribution box that is supplied with power by a main power source on the vehicle and is commonly attached to a plurality of attachment target vehicles; and
At least one of the communication line, the power line, the signal line, and the ground line in the trunk harness is branched and connected at one end to the at least one expansion system electrical device attached to the attachment target vehicle. A branch harness to which the ends are connected,
A relay / fuse portion provided in the branch line harness for controlling and protecting the extended electrical equipment; and
A vehicle electrical equipment connection system comprising: The vehicle electrical equipment connection system according to claim 3,
A harness branch connection mechanism provided at one end of the branch line harness for press-connecting to at least one of the communication line, power line, signal line, and ground line has the relay / fuse portion. An electrical equipment connection system for a vehicle. A standard control unit for controlling a standard system electrical device that is commonly mounted to a target vehicle, and an extension system electrical device that is supplied with power from a main power source on the vehicle and selectively retrofitted to the target vehicle. A power distribution box having an expansion control unit for
A standard connector provided in the power distribution box to connect one end of a standard harness connected to the standard electrical equipment;
One end of an additional connection member having the other end connected to the expansion system electrical equipment is provided in the power distribution box for connecting an expansion harness including at least one of a communication line or a power line that is branched and connected later. An expansion connector,
A relay / fuse part provided in the additional connecting member to control and protect the expansion system electrical equipment;
A vehicle electrical equipment connection system comprising: A power distribution box supplied with power by a main power source on the vehicle;
Standard electrical equipment,
Expansion system electrical equipment,
A power line connected to the power distribution box and capable of supplying power to the electrical equipment;
A standard system control ECU for controlling the standard system electrical equipment;
An expansion system control ECU for controlling the expansion system electrical equipment;
With
The expansion system electrical equipment is wired to the power line by an additional connection member and supplied with power,
A relay / fuse part for controlling and protecting the expansion system electrical equipment is provided in the additional connection member,
The extension system electrical equipment and the extension system control ECU can transmit and receive signals by wireless communication, and the extension system control ECU transmits the control signal by wireless communication to Control,
The vehicle electrical equipment connection system characterized by the above-mentioned.

Images