JP5052960B2 - Wire harness system - Google Patents

Description

  The present invention relates to a wire harness system for a vehicle such as an automobile.

Conventionally, as a wire harness for a vehicle, for example, there is a technique described in Patent Document 1. In this prior art, a wire harness trunk line is wired between a plurality of junction boxes having an internal circuit for each electrical component, and a wire harness branch line is wired between the junction box and the electrical component.
Japanese Patent No. 2929962

  By the way, in the said prior art, the taping operation | work of the wire harness trunk line in the branch point which is a difficult work in wire harness manufacture remains, and the fixed workability of the wire harness trunk line in a branch point and the dimensional accuracy of a wire harness trunk line deteriorate. There is a fear.

  The present invention has been made in view of such conventional problems, and its purpose is to improve the workability of fixing the wire harness main line and to stabilize the shape of the wire harness main line at each branch point (dimensional accuracy). It is to provide a wire harness system that is improved.

In order to solve the above-described problem, the vehicle wire harness system according to the first aspect of the present invention distributes the power supplied through the wire harness trunk line and supplies the power to the electrical components through the wire harness branch line. With a power box
The plurality of power supply boxes are vertically connected via one wire harness trunk line connected to each other via the power supply box, and are mounted on a lean hose arranged inside the instrument panel and fixed to the vehicle body side. And
The wire harness trunk line connecting the power supply boxes is routed on the lean hose,
Branch the power supply box is a branch point of the wire harness main line, a first branch point that branches to the passenger seat of the instrument panel, a second branch point that branches to the center cluster panel left side, the center cluster panel right section And a fourth branch point that branches to the steering portion of the instrument panel .

    According to this aspect, by mounting each power supply box at a branch point of the wire harness main line, the length of the wire harness main line connecting the power supply boxes is determined in advance. For this reason, a wire harness trunk line having a predetermined length and having a connector attached to the end thereof is prepared, and when the wire harness is assembled, each wire harness trunk line may be connected to each power supply box by a connector. Thereby, since the taping work of the wire harness main line at each branch point can be abolished, the workability of fixing the wire harness main line can be improved, and the cost can be reduced by reducing the number of steps of the fixing work. In addition, the shape of the wire harness trunk line at each branch point can be stabilized (dimension accuracy improvement). Further, since the mounting position of each power supply box is determined in advance, the length of the wire harness branch line connecting each power supply box and the electrical component can be routed with high accuracy, and the mounting design of the electrical component is facilitated.

In addition , since the plurality of power supply boxes are vertically connected through one wire harness trunk line connected to each other via the power supply box , a simplified configuration and a good-looking wire harness system can be obtained. It is done.

In addition, the plurality of power supply boxes are mounted on a lean hose arranged inside the instrument panel and fixed to the vehicle body side, and the wire harness trunk line connecting the power supply boxes is routed on the lean hose. The length of the wire harness trunk line to each branch point can be minimized . As a result , the weight reduction and cost reduction of the wire harness trunk line can be achieved.

The power supply box has a first branch point that branches to the passenger seat of the instrument panel, a second branch point that branches to the left side of the center cluster panel, a third branch point that branches to the right side of the center cluster panel, and Since it is arranged at the fourth branch point that branches to the steering part of the instrument panel , the center cluster panel and the electrical components mounted in the instrument panel to which this center cluster panel is attached are connected to each power supply box. The length of the wire harness branch line can be routed with high accuracy, and the mounting design of the electrical components in the center cluster panel and the instrument panel becomes easy.

The wire harness system for a vehicle according to another aspect of the present invention includes the wire harness trunk line routed between the power supply boxes, the wire harness branch line routed between the power supply box and an electrical component, a vehicle control system, and The wire harness important line routed between the electrical components for which signal information of the safety system is input and output is separately routed.

  According to this aspect, the assemblability of the body system can be improved while maintaining the reliability and failure rate of the vehicle control system and the safety system equivalent to the conventional one. Here, the important signal information of the safety system is, for example, an airbag sensor signal or an inflator signal of the airbag system.

In the vehicular wire harness system according to another aspect of the present invention, the power supply box includes a main line connector accommodating portion for connecting to the wire harness main line, and a branch line connector accommodating portion for connecting to the wire harness branch line. And an important line through path that allows the wire harness important line to pass through without terminal processing .

  According to this aspect, since the connection failure of the wire harness important line is eliminated, the reliability of the vehicle control system and the safety system is improved. In addition, since the power supply box includes an important line through path through which the wire harness important line passes, it is not necessary to provide an extra connection connector in the power supply box, and the power supply box can be downsized.

In the wire harness system for a vehicle according to another aspect of the present invention, the important line through path is formed in the lower case and a plurality of notches formed on a side surface of the lower case of the power supply box, And a plurality of reinforcing ribs for guiding the wire harness important line passing through the plurality of notches.

  According to this aspect, the movement of the wire harness important line in the power supply box due to the vibration of the vehicle is suppressed, and the assembly of the wire harness important line to the power supply box is facilitated.

  According to the present invention, it is possible to improve the workability of fixing the wire harness main line and to stabilize the shape of the wire harness main line at each branch point (improving dimensional accuracy).

  Next, embodiments embodying the present invention will be described with reference to the drawings. In the description of each embodiment, similar parts are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
A wire harness system according to a first embodiment will be described with reference to FIG.
FIG. 1 is a schematic layout diagram of a wire harness system disposed inside an instrument panel of a vehicle.

  As shown in FIG. 1, the wire harness system according to the first embodiment distributes power supplied via the wire harness trunk line 10, and supplies electrical components (illustrated) via the wire harness branch lines 21, 22, 23, and 24. A plurality of power supply boxes 31, 32, 33, 34 are provided.

Power supply boxes 31 to 34 are respectively mounted at branch points a to d of the wire harness main line 10.
That is, at the branch point a of the wire harness main line 10, the first wire harness main line 11 and the second wire harness main line 12 are connected to the power supply box 31 via a connector (not shown).

  At the branch point b of the wire harness main line 10, the second wire harness main line 12 and the third wire harness main line 13 are connected to the power supply box 32 via a connector (not shown).

  At the branch point c of the wire harness main line 10, the third wire harness main line 13 and the fourth wire harness main line 14 are connected to the power supply box 33 via a connector (not shown).

  Then, at the branch point d of the wire harness main line 10, the fourth wire harness main line 14 and the fifth wire harness main line 15 are connected to the power supply box 34 via a connector (not shown).

  Thus, in the wire harness system according to the present embodiment, the plurality of power supply boxes 31 to 34 are vertically connected via the single wire harness trunk line 10 connected to each other via the power supply boxes 31 to 34. Yes.

  Further, in this wire harness system, a plurality of power supply boxes 31 to 34 are mounted at branch points a to d of the wire harness main line 10 disposed inside the instrument panel 40.

  Each of the power supply boxes 31 to 34 is supplied from a second power supply box (not shown) connected to the connector 11a of the wire harness main line 11 or a second power supply box (connected to the connector 15a of the wire harness main line 15). This is a third power supply box that distributes the power supplied from (not shown) to the electrical components via the plurality of wire harness branch lines 21 to 24. These second power supply boxes are connected to a first power supply box (not shown) connected to a battery (not shown) mounted on the vehicle via a main power supply line (not shown) via another wire harness main line. Yes.

  In FIG. 1, reference numeral “41” denotes a center cluster panel attached to the instrument panel 40, reference numeral “42” denotes a passenger seat portion of the instrument panel 40, and reference symbol “43” denotes a steering portion of the instrument panel.

  Moreover, as shown in FIG. 1, the several power supply boxes 31-34 are mounted on the lean hose 45 arrange | positioned inside the instrument panel 40 and being fixed to the vehicle body side, between each power supply boxes 31-34. Wire harness trunk lines 11 to 15 to be connected are routed on the lean hose 50. The lean hose 50 is fixed to the vehicle body side via a plurality of attachment members such as brackets 51, 52, and 53.

  The power supply boxes 31 to 34 have a branch point a that is a first branch point of the wire harness trunk line 10 that branches to the passenger seat portion 42 and a branch point b that is a second branch point that branches to the left side portion of the center cluster panel 41. , The branch point c that is the third branch point that branches to the right side of the center cluster panel 41, and the branch point d that is the fourth branch point that branches to the steering unit 43.

  The power supply boxes 31 to 34 are connected to the connectors 21a to 24a of the wire harness branch lines 21 to 24 through the wire harness branch lines 21 to 24, respectively, and the passenger seat part 42, the left side part of the center cluster panel 41, It is electrically connected to various electrical components mounted on the right side portion and the steering portion 43, respectively.

  In addition, each wire harness trunk line 11-15 uses tape 70 for wiring harness important line 61 etc. arranged between a plurality of power supply lines and electrical components to which signal information of vehicle control system and safety system is input and output. It is a united configuration.

According to 1st Embodiment comprised as mentioned above, there exist the following effects.
O By installing the power supply boxes 31 to 34 at the branch points a to d of the wire harness main line 10, the lengths of the wire harness main lines 11 to 15 connecting the power supply boxes 31 to 34 are determined in advance. For this reason, the wire harness trunk lines 11-15 which have the length decided beforehand and to which the connector was attached to the edge part are prepared. At this time, each wire harness trunk line 11-15 binds a plurality of power supply lines, a plurality of wire harness important lines 61, 62, and the like with a tape 70. And when assembling a wire harness, what is necessary is just to connect each wire harness trunk line 11-15 to each power supply box 31-34 by connector connection. Thereby, since the taping work of the wire harness trunk lines 11 to 15 at the respective branch points a to d can be abolished, the fixing workability of the wire harness trunk lines 11 to 15 is improved, and the cost can be reduced by reducing the number of the fixing work. I can plan.

  O Shape stabilization (improvement of dimensional accuracy) of the wire harness trunk lines 11 to 15 at the respective branch points a to d can be achieved.

  ○ Since the mounting positions of the power supply boxes 31 to 34 are determined in advance, the lengths of the wire harness branch lines 21 to 24 connecting the power supply boxes 31 to 34 and the electrical components can be routed with high accuracy. Product design is also easy.

  ○ Since the plurality of power supply boxes 31 to 34 are vertically connected via one wire harness trunk line 10 connected to each other via the respective power supply boxes 31 to 34, the structure is simplified and the appearance is good. A wire harness system is obtained.

  Since the plurality of power supply boxes 31 to 34 are mounted at the branch points a to d of the wire harness main line 10 disposed inside the instrument panel 40, the plurality of power supply boxes 31 to 34 and the plurality of wire harness main lines 11 are mounted. ~ 15 is less susceptible to water ingress. As a result, a highly reliable instrument panel / wire harness system can be obtained.

  ○ With the configuration in which the power supply boxes 31 to 34 are mounted on the lean hose 45 inside the instrument panel 40 and the wire harness main lines 11 to 15 are routed on the lean hose 50, each of the branch points a to d Since the length of the wire harness main line 11-15 can be made the shortest, the weight reduction and cost reduction of a wire harness main line can be achieved.

  The power supply boxes 31 to 34 include a branch point “a” of the wire harness trunk line 10 that branches to the passenger seat 42, a branch point “b” that branches to the left side of the center cluster panel 41, a branch point “c” that branches to the right side thereof, and steering It is arranged at a branch point d that branches to the portion 43. With this configuration, the lengths of the wire harness branch lines 21 to 24 connecting the power supply boxes 31 to 34 and the electrical components mounted in the center cluster panel 41 and the instrument panel 40 to which the center cluster panel 41 is attached are reduced. It can be routed with high accuracy, and the mounting design of the electrical components in the center cluster panel 41 and the instrument panel 40 becomes easy.

(Second Embodiment)
Next, the wire harness system which concerns on 2nd Embodiment is demonstrated based on FIG.
The characteristics of this wire harness system are as follows. In the first embodiment, each wire harness trunk line 11 to 15 routed between the power supply boxes 31 to 34 and each routed between the power supply boxes 31 to 34 and the electrical components. The wire harness branch lines 21 to 24 and the wire harness important line 60 routed between the electrical components to which signal information of the vehicle control system and the safety system are input and output are separately routed.

  Here, “separately” means “independently”. By arranging in this way, each of the wire harness trunk lines 11 to 15 has a configuration in which a plurality of power supply lines and signal lines connected to the body system are bundled. Moreover, the wire harness important line 60 is fixed to each wire harness trunk line or the lean hose 50 by tape winding or the like, for example. The electrical components of the body system include, for example, a door mirror device, a power window device, a wiper, a lighting device, and the like.

  The vehicle control system means an electronic control system such as an engine, and the safety system means an air bag system.

  The wire harness important line 60 is, for example, a signal line for transmitting an airbag sensor signal or an inflator signal of an airbag system. The wire harness important line 60 includes, for example, a connector 60a connected to an acceleration sensor, a connector 60b connected to an airbag ECU (electronic control unit) that performs calculation processing for collision determination, and a connector 60c connected to an inflator. It has. Other configurations are the same as those in the first embodiment.

  According to 2nd Embodiment comprised as mentioned above, in addition to the effect which the said 1st Embodiment show | plays, there exist the following effects.

  ○ Wire harness trunk lines 11-15, wire harness branch lines 21-24, and wire harness important line 60 are routed separately, so that the reliability and failure rate of vehicle control systems and safety systems are the same as before. The assembly of the body system is improved while maintaining.

(Third embodiment)
Next, the wire harness system which concerns on 3rd Embodiment is demonstrated based on FIG.
The feature of this wire harness system is that, of the power supply boxes 31 to 34, for example, the power supply boxes 31 to 33 have the following configuration in the second embodiment. In FIG. 3, only the power supply box 32 is shown as a representative of the power supply boxes 31 to 33.

  The power supply box 32 passes through the main wire connector housing portion 81 for connecting to the wire harness main wires 12 and 13, the branch wire connector housing portion 82 for connecting to the wire harness branch line 22, and the wire harness important line 60. And an important line through path. In FIG. 3, only the wire harness trunk line 12 is shown among the wire harness trunk lines 12 and 13 connected to the power supply box 32.

  The power supply box 32 includes an upper case 91, a lower case 92, and an electronic control unit 93 accommodated in both cases 91 and 92.

  The upper case 91 is formed with a main line connector accommodating portion 81, a branch line connector accommodating portion 82, and a plurality of fuse accommodating portions 84 that accommodate a plurality of fuses 83.

  The circuit board 85 of the electronic control unit 93 is formed with a plurality of through holes 86 to which a plurality of terminals connected to the terminals of the wire harness trunk lines 12 and 13 and the wire harness branch line 22 are directly connected.

  On the circuit board 85, various electronic components 87, a power supply switching relay 88, and the like are mounted.

  An important line through path through which the wire harness important line 60 passes is formed in the lower case 92. The important line through path guides a notch 92a formed on each of the three side surfaces of the lower case 92 and a wire harness important line 60 formed inside the lower case 92 and passing through the three notches 92a. A plurality of (three in this example) reinforcing ribs 92b.

  According to 3rd Embodiment comprised as mentioned above, in addition to the effect which the said 2nd Embodiment show | plays, there exist the following effects.

  O Since the power supply box 32 has an important line through path through which the wire harness important line 60 is passed, connection failure of the wire harness important line 60 is eliminated. For this reason, the reliability of the vehicle control system and the safety system is improved. The same can be said for the other power supply boxes 31 and 33.

  O Since the power supply box 32 includes an important line through path through which the wire harness important line 60 is passed, it is not necessary to provide an extra connection connector in the power supply box 32, and the power supply box 32 can be reduced in size. The same can be said for the other power supply boxes 31 and 33.

  The important line through path guides the wire harness important line 60 that is formed in each of the three side surfaces of the lower case 92 and the notch portions 92a formed in the lower case 92 and passes through the three notch portions 92a. A plurality of reinforcing ribs 92b. With this configuration, the movement of the wire harness important line 60 in the power supply box 32 due to the vibration of the vehicle is suppressed, and the assembly of the wire harness important line 60 to the power supply box 32 is facilitated. The same can be said for the other power supply boxes 31 and 33.

In addition, this invention can also be changed and embodied as follows.
In each of the above embodiments, the wire harness system disposed inside the instrument panel has been described as an example. However, the present invention can be applied to the vehicle engine room, one side of the vehicle interior, or both sides of the vehicle interior. It is applicable also to the wire harness system arrange | positioned. In other words, the present invention is most preferably applied to a wire harness system disposed inside the instrument panel, but is disposed in another place such as in the instrument panel, in both sides of the passenger compartment, or in the engine room. It can also be applied to a wire harness system.

  In the first embodiment, the power supply boxes 31 to 34 are mounted on the lean hose 50 fixed to the vehicle body side, and the wire harness trunk lines 11 to 15 connecting the power supply boxes 31 to 34 are arranged on the lean hose 50. Although the searched configuration has been described as an example, the present invention is not limited to such a configuration. The present invention includes a plurality of power supply boxes that distribute power supplied via a wire harness trunk line and supply the electrical components via a wire harness branch line, and the power supply boxes are respectively mounted at branch points of the wire harness trunk line. Widely applicable to wire harness systems.

The perspective view which shows schematic structure of the wire harness system which concerns on 1st Embodiment of this invention. The perspective view which shows schematic structure of the wire harness system which concerns on 2nd Embodiment of this invention. The disassembled perspective view which shows schematic structure of the power supply box used for the wire harness system which concerns on 3rd Embodiment of this invention.

Explanation of symbols

10-15 ... Wire harness main lines 21-24 ... Wire harness branch lines 31-34 ... Power supply box 40 ... Instrument panel 41 ... Center cluster panel 42 ... Passenger seat of instrument panel 43 ... Instrument panel steering part 50 ... Lean hose 60 ... Wire harness important line 81 ... Main line connector housing part 82 ... Branch line connector housing part 92 ... Lower case 92a ... Notch 9
92b ... rib 92b for reinforcement
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Claims (4)

Distributing the power supplied via the wire harness trunk line, and having a plurality of power supply boxes supplying the electrical components via the wire harness branch line,
The plurality of power supply boxes are vertically connected via one wire harness trunk line connected to each other via the power supply box, and are mounted on a lean hose arranged inside the instrument panel and fixed to the vehicle body side. And
The wire harness trunk line connecting the power supply boxes is routed on the lean hose,
Branch the power supply box is a branch point of the wire harness main line, a first branch point that branches to the passenger seat of the instrument panel, a second branch point that branches to the center cluster panel left side, the center cluster panel right section The vehicle wiring harness system is arranged at a third branch point that branches to a fourth branch point that branches to the steering portion of the instrument panel . Between the wire harness trunk line routed between the power supply boxes, the wire harness branch line routed between the power supply box and an electrical component, and an electrical component to which signal information of a vehicle control system and a safety system is input / output The wire harness system for vehicles according to claim 1, wherein the wire harness important line to be routed is routed separately . The power supply box has a trunk connector housing part for connecting to the wire harness trunk line, a branch connector housing part for connecting to the wire harness branch line, and the wire harness important line without passing through a terminal process. The vehicular wire harness system according to claim 2 , further comprising an important line through path . The important line through path is formed in a plurality of notches formed on the side of the lower case of the power supply box, and is formed in the lower case, and guides the wire harness important line passing through the plurality of notches. The vehicle wire harness system according to claim 3 , further comprising a plurality of reinforcing ribs .

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