JP4494872B2 - Distributed control harness for vehicle door electrical components and its routing structure - Google Patents

Description

  The present invention relates to a distributed control harness for a vehicle door electrical component having a connector with built-in electronic components for controlling a plurality of electrical components mounted on a vehicle door such as a rear door by data communication, and a wiring structure thereof.

  A large number of actuators such as motors and relays are mounted on the doors of automobiles as electrical components, and a control system has been developed to control these electrical components independently and independently by data communication. In this control system, a communication circuit is built in a connector connected to each actuator so that communication data can be transmitted and received between the control device on the vehicle body side and the drive circuit (for example, see Patent Document 1). A harness as a communication bus used here includes a power supply line, a ground line, and a control signal line, and a normal insulated wire is used.

  Such a distributed control system for actuators is not yet used for controlling all in-vehicle electrical components. In particular, the wiring to a plurality of electrical components of the rear door that requires opening and closing is a wire harness that bundles ordinary electric wires. It is currently used.

  In addition, when supplying drive power and transmitting control signals to electrical components such as wiper motors, door lock actuators, and E-latches mounted on the rear door, a normal wire harness is branched or extended and connected to individual electrical components. The method is taken. Specifically, for example, as shown in FIG. 4, the wire harness 50 is routed through the routing hole 2 c of the door inner panel 2 of the rear door 1 and is branched from the wire harness 50. The male connectors 71 to 74 on the actuator 81 to 84 side are fitted and connected to the female connectors 61 to 64 connected to the branch lines 51 to 54, and the actuators 81 to 84 are driven and controlled, respectively.

  Furthermore, as a wiring structure of these harnesses to the rear door, a recessed portion having an open cross section is formed in the door inner panel of the rear door panel that is formed of a door outer panel and a door inner panel and forms a closed cross section, and the wire harness is disposed in the recessed portion. Structures such as a countermeasure structure (for example, see Patent Document 2) and a structure for arranging a wire harness in the interior space of the rear door (for example, see Patent Document 3) have been proposed.

JP 2003-134720 A (page 2, FIG. 2) Japanese Utility Model Publication No. 61-090616 (page 5-6, Fig. 2) Japanese Patent Laid-Open No. 2002-096697 (page 3, FIG. 1)

  However, in recent years, the number of electrical components to be mounted on the rear door has increased, and in the conventional wiring with a normal wiring harness, the outer diameter of the wiring harness itself has increased and inserted into the wiring hole of the door inner panel. It has become difficult. In addition, since it is not possible to provide a wire harness routing groove or path gap on the door inner panel side in advance in terms of cost, it is possible to wire the wire harness in a limited gap between the door inner panel and the trim. It has become difficult.

  In addition, the conventional connection to the individual electrical components has a drawback that it is very difficult and time-consuming to connect the connectors that are not fixedly supported in a narrow space.

  In addition, even if a multiplex transmission system is adopted to achieve thinning, the bus harness itself does not have sufficient strength to withstand the tension during wiring and the external force after wiring, In addition to this, there is a risk that the wire harness may be damaged by burrs or sharp edges generated in the inner panel, and thus there is a problem that some kind of protective measures need to be taken, which is costly and troublesome.

  The present invention has been made in view of the above points, and adopts a decentralized control system for electrical components to be mounted on the door, which is easy to route to the door, and can be arranged without modifying the existing door inner panel and trim. It is an object of the present invention to provide a vehicle door distributed control harness and its routing structure that can be routed and that makes it very easy to connect electrical components and harness connectors.

In order to achieve the above object, a distributed control harness for vehicle door electrical components according to the present invention is an electronic component that is connected to a plurality of electrical components mounted on a door and drives and controls each electrical component. A distributed control harness for vehicle door electrical components using a bus harness to which an electronic component built-in connector in which at least a part is an exothermic electronic component is incorporated,
The bus harness is formed in a flat shape, and includes three conductive bands including a power line, a ground line, and a control signal line, and an insulator that insulates them.
A plurality of the electronic component built-in connectors are provided on the bus harness, and the electronic component built-in connectors are respectively fitted in correspondence with the connectors connected to the respective electrical components. Lines and control signal lines are connected and fixed to the respective electronic component built-in connectors, a part of the bus harness is in contact with a heat sink, and an outer portion of the connection fixing part of the bus harness is in the longitudinal direction of the bus harness. It is characterized by being bent into a U shape so as to form an extra length portion .

By adopting such a bus harness, it is possible to make a flat strip-like wiring body that can be easily wired on the door inner panel, and a bus that can be sufficiently wired even in the gap between the conventional door inner panel and the trim. Harness can be obtained. In addition, since the electronic component built-in connector is fixed to the bus harness side, the actuator-side connector can be easily fitted to the electronic component built-in connector with one hand.
In addition, a part of the bus harness is in contact with the heat sink, and the outside portion of the connection terminal portion of the bus harness is bent so as to form an extra length portion in the longitudinal direction, so that the built-in electronic circuit is protected. .

  The vehicle door electrical component distributed control harness according to claim 2 of the present invention is the vehicle door electrical component distributed control harness according to claim 1, wherein the electronic component built-in connector is located near the vehicle door electrical component. It is connected to the bus harness so that it can be fixed to the vehicle body.

  With such a connector arrangement and fixing structure, the connector on the actuator side can be easily fitted to the electronic component built-in connector with one hand, and the workability of connector fitting is improved as compared with the prior art.

  According to a third aspect of the present invention, there is provided a distributed control harness for vehicle door electrical components according to claim 1 or 2, wherein the flat bus harness is a flexible flat. It is a cable.

  In addition to making it easy to route the bus harness along the shape of the door inner panel by using a flexible flat cable that is extremely resistant to external forces and tension, the bus harness provides special protection measures for the bus harness. No need to apply.

  According to a fourth aspect of the present invention, there is provided a distributed control harness wiring structure for a vehicle door electrical component according to any one of the first to third aspects. It is characterized by being routed in a gap formed by a door inner panel and a trim.

  Since the distributed control harness can be routed in this way, there is no need to previously provide a groove for routing the harness or a route gap on the door inner panel side, and even if the electrical components to be installed on the door increase, the ready-made door inner A panel structure can be used, which is advantageous in terms of cost.

  According to a fifth aspect of the present invention, there is provided a distributed control harness wiring structure for a vehicle door electrical component according to the fourth aspect, wherein the bus harness is the door inner panel. It is routed along one side edge of the vehicle door electrical component mounting opening.

  With such a distributed control harness, the wiring between the door inner panel and the trim can be routed, and the electrical component side connector can be easily fitted to the electronic component built-in connector on the bus harness side. it can.

  According to the distributed control harness for vehicle door electrical components according to claim 1, even a door equipped with a large number of electrical components such as a rear door does not require modification on the vehicle body side, and can be easily routed and connected to a connector. It is possible to provide a distributed control harness and its routing structure that do not require special protective measures against external forces and catches during the fitting operation, and that facilitate the connector fitting operation.

  According to the distributed control harness for vehicle door electrical components according to claim 2, the connector built-in connector is connected so as to be fixed to the vehicle body in the vicinity of the electrical components, so that the connector fitting work is more than conventional. The connector on the actuator side can be easily fitted to the electronic component built-in connector with one hand.

  In addition, according to the distributed control harness for vehicle door electrical components according to claim 3, the bus harness is a flexible flat cable, so that the bus harness can be easily routed along the shape of the door inner panel. Since a flexible flat cable that is extremely resistant to external force and tension is used, it is not necessary to take special protection measures for the bus harness, and workability can be improved and costs can be reduced.

  According to the distribution structure of the distributed control harness for the vehicle door electrical component according to claim 4, the distributed control harness can be wired in the gap formed by the door inner panel and the trim of the electrical component mounting portion in advance, There is no need to provide a harness routing groove or path gap on the inner panel side. That is, even if the number of electrical components to be mounted on the door increases, the ready-made door inner panel structure can be used, which is advantageous in terms of cost.

  Further, according to the distribution control back of the vehicle door electrical component according to claim 5, it is possible to route the gap between the door inner panel and the trim by the bus harness. The electronic component built-in connector can be arranged so that the connector on the electrical component side can be easily fitted.

  Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a partial top view of a state in which a decentralized control harness for electrical components mounted in a rear door is routed on a door inner panel, and an upper surface 2a of the door inner panel 2 of the rear door 1 extends along the vehicle width direction. A plurality of, for example, four openings 3, 4, 5, 6 etc. are provided. In these openings 3 to 6, actuators as electrical components, for example, wiper motor 7, door lock actuator 8, E A latch 9, a closer motor 10 and the like are mounted. Connectors 11 to 14 are provided on the lead wires of the actuators 7 to 10, respectively.

  The bus harness 21 as the trunk line is arranged along the longitudinal direction (vehicle width direction) between the edge 2b on the rear window side of the upper surface 2a of the door inner panel 2 and the one side edge of the openings 3 to 6. An electronic control unit (ECU) (not shown) provided on the vehicle body side is inserted into the left and right door pillars 1c and 1d through the left and right door pillars 1c and 1d. Connected).

  The bus harness 21 is a single harness having a strip shape and is a distributed control harness in which three conductive bands are provided in parallel and covered with an insulator. More specifically, a flexible flat cable (FFC) in which three cores of a flat copper conductor having a thickness of 0.15 mm and a width of 2.5 mm are insulated with a polyethylene terephthalate film, as shown in FIG. , And the control signal line 24 has three cores. The bus harness 21 is provided with electronic component built-in connectors 25 to 28 for controlling the actuators 7 to 10 at positions of the openings 3 to 6, and includes a power line 22, a ground line 23, and a control signal line. 24 is fixedly connected. These electronic component built-in connectors 25 to 28 are fixed to the upper surface 2 a of the door inner panel 2 by an adhesive sheet or a clamp.

  And the connectors 11-14 of the actuators 7-10 corresponding to these electronic component built-in connectors 25-28 are fitted and connected. In this case, since the electronic component built-in connectors 25 to 28 are in a standby state with respect to the connectors 11 to 14 on the actuators 7 to 10 side, the connectors 11 to 14 drawn from the openings 3 to 6 can be easily held with one hand. Can be fitted. Weather strips 15 and 16 are provided on the edge 2 e side of the upper surface 2 a of the door inner panel 2.

  FIG. 2 is a sectional view taken along the arrow II-II in FIG. 1 in a state where the ready-made trim 17 is put on the door inner panel of FIG. 1, and the electronic component built-in connector 25 connected to the bus harness 21 is It can be accommodated in a gap between the ready-made trim 17 and the upper surface 2 a of the door inner panel 2. Actually, since the height h of the gap between the trim 17 and the upper surface 2a of the door inner panel 2 is about 15 mm, the heights of the electronic component built-in connectors 25 to 28 are designed so that they can be accommodated in this space. ing.

  In addition, in the recent rear door wiring harness, the harness diameter may be as much as about 18 mm. Therefore, it is difficult to wire a conventional harness in such a gap. However, according to the distributed control harness as in the present embodiment, there is no need to investigate the limited gap between the trim and the door inner panel in advance to find the routing route, and the harness as in the conventional case. It is possible to provide a simple and easy routing structure without specially processing the door inner panel and trim according to the diameter.

  Moreover, in this embodiment, although the flexible flat cable (FFC) is used as the bus harness 21, as a wiring material, the flat resin extrusion coated flat which can be accommodated in the limited space | gap of a door inner panel and a trim. You may use a cable, a ribbon electric wire, etc. However, in the case of a distributed control harness having an extremely small number of cores such as the bus harness 21 of the present embodiment, the protector is very weak against external forces such as pulling and hooking during wiring and fixing work of the harness and connector fitting work. It is desirable to use a flexible flat cable having a coating that is relatively strong against external force because special protection measures such as a protective tube and the like are required.

  Next, the structure of the electronic component built-in connector 25 will be described. FIG. 3 is an exploded perspective view of the electronic circuit built-in connector 25 shown in FIG. The electronic component built-in connector 25 includes a flexible printed wiring board (FPC) (hereinafter referred to as “printed wiring board”) 35, a heat sink 36, a female terminal 37, and the like in a case 30 including a lower case 31 and an upper case 32. . The case 30 has a hinge portion (hereinafter referred to as a “hinge portion 33”) in which the upper end of one side wall of the lower case 31 and the lower end of the corresponding side wall of the upper case 32 are connected by a thin portion 33. 33 can be opened and closed. In FIG. 3, the upper case 32 is drawn separately from the lower case 31 by the hinge portion 33. The bottom of the lower case 31 is opened, and the heat sink 36 is fixed with screws at the four corners.

  The lower case 31 and the upper case 32 are formed so that the protruding edges 31a and 32a are opposed to each other on both sides in the longitudinal direction, and are detachably fitted so as to be a gap for introducing the bath harness 21 therebetween. Part is formed. In addition, a substantially central portion of the side wall opposite to the side wall on which the hinge portion 33 of the lower case 31 is provided is cut out to form an opening 31c, and protrudes outward slightly obliquely downward at the lower edge thereof. A protective flange 31b is provided. A protective flange 32b is provided on the corresponding side wall of the upper case 32 in correspondence with the protective flange 31b. The case 30 is formed of a resin member such as polyethylene having insulation properties, for example.

  On the printed wiring board 35, an electric circuit pattern corresponding to the actuator to be controlled is formed, and a power IC 41, a control IC 42, other electronic components 43, and the like are mounted. The printed wiring board 35 has a shape in which a lower surface 35a and an upper surface 35b are overlapped by overlapping a plurality of side portions 35c on the hinge portion 33 side, and both sides along the bus harness 21 are wire connection portions 35d, and an opening portion 31c. The side part corresponding to is a terminal connection part 35e. The wire connection portion 35d is provided with a power supply line, a ground line, and a control signal line corresponding to the power supply line 22, the ground line 23, and the control signal line 24 of the bus harness 21, and the terminal connection portion 35e has an actuator to be controlled. A connection circuit pattern (none of which is shown) corresponding to is formed.

  The printed wiring board 35 is placed on the bus harness 21 as shown in the figure, and the power line, the ground line, and the control signal line of the electric wire connecting portion 35d on both sides correspond to the corresponding power line 22 and ground line of the bus harness 21, respectively. 23 and the control signal line 24 are electrically connected and fixed by a piercing connection 45, respectively. A female terminal 37 fitted to the male terminal of the connector 11 on the actuator 7 side is connected to the connecting terminal portion 35e by a piercing connecting portion 46. In this way, the piercing connection has an advantage that the connector itself is not enlarged and the connector itself can be made thin, unlike the conventional pressure contact connection.

  The connection terminal portion 35e is led out from the opening 31c of the lower case 31 and is placed on the protective flange 31b. In the bus harness 21, a portion corresponding to the lower surface 35 a of the printed wiring board 35 is placed on the heat sink 36 and bonded and fixed, and the upper surface 35 b of the printed wiring board 35 is bonded and fixed to the back surface of the upper case 32. The bus harness 21 has upper and lower protrusions when the outer side of the connection terminal portion 35d is bent into an inverted U shape to form an extra length, and the upper case 32 is closed and fixed by a locking portion (not shown). After the female terminal 37 is nipped and fixed to the upper and lower protective flanges 31b and 32b, the female terminal cover 38 is externally fitted.

  In this way, the electronic component built-in connector 25 is configured. Thereby, the built-in electronic circuit is protected. The female terminal 37 and the female terminal cover 38 constitute a female connector, and the connector 11 of the actuator 7 is fitted and connected. The same applies to the connectors 26 to 28 incorporating other electronic components.

  In the present embodiment, the bus harness 21 is built in an electronic circuit corresponding to the connection position of the actuators 7 to 10 using a single long harness that extends along the upper surface 2a of the door inner panel 2 over the entire length in the vehicle width direction. The connectors 25 to 28 are connected. However, the present invention is not limited to this. The lengths of the sections of the electronic circuit built-in connectors 25 to 28 connected to the actuators 7 to 10 are determined as the lengths of the sections 25 to 28. You may make it relay by.

  Moreover, although the above-mentioned embodiment demonstrated the case where this invention was applied to the rear door of a vehicle, it cannot be overemphasized that it may apply to other doors, such as a vehicle side door.

  Although the distributed control harness and its routing structure according to the present invention have been described based on the embodiment in which the automobile rear door is used, the field of use of the present invention is not necessarily limited to this, and office machines such as railway vehicles and copy machines, buildings, etc. It can be widely used for wiring for distributed control of houses and houses.

It is a partial top view of the state where the distributed control harness of the vehicle door electrical component according to the present invention is routed to the inner panel of the rear door. It is arrow II-II direction sectional drawing in FIG. It is a disassembled perspective view which shows an example of the electronic component built-in connector shown in FIG. It is a wiring connection simulation figure of the conventional rear door harness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rear door 1c, 1d Door pillar 2 Door inner panel 2a Upper surface 2b Edge 2c, 2d Arrangement hole 2e Edge 3-6 Opening 7 Wiper motor (actuator)
8 Door lock actuator 9 E latch (actuator)
10 Closer motor (actuator)
11-14 Connector 15, 16 Weather strip 17 Trim 21 Bath harness (distributed control harness)
22 Power line 23 Ground line 24 Control signal line 25-28 Electronic circuit built-in connector (connector)
30 Case 31 Lower Case 31a Projecting Edge 31b Protection Flange 31c Opening 32 Upper Case 32a Projecting Edge 32b Protection Flange 33 Hinge (Thin Wall)
35 Flexible printed wiring boards (printed wiring boards)
35a lower surface 35b upper surface 35c side portion 35d wire connection portion 35e terminal connection portion 36 heat sink 37 female terminal 41 power IC
42 IC for control
43 Electronic component 45, 46 Piercing connection part 50 Wire harness 51-54 Branch line 61-64 Female connector 71-74 Male connector 81-84 Actuator

Claims (5)

Connected to a plurality of electrical components mounted on the door, electronic components that drive and control each electrical component , and at least a part of the electronic components is connected to an electronic component built-in connector that contains a heat generating electronic component A distributed control harness for vehicle door electrical components using a bus harness,
The bus harness is formed in a flat shape, and includes three conductive bands including a power line, a ground line, and a control signal line, and an insulator that insulates them.
A plurality of the electronic component built-in connectors are provided on the bus harness, and the electronic component built-in connectors are respectively fitted in correspondence with the connectors connected to the respective electrical components. Lines and control signal lines are connected and fixed to the respective electronic component built-in connectors, a part of the bus harness is in contact with a heat sink, and an outer portion of the connection fixing part of the bus harness is in the longitudinal direction of the bus harness. A distributed control harness for vehicle door electrical components, which is bent in a U-shape so as to form an extra length portion .   2. The vehicle door electrical component distributed control harness according to claim 1, wherein the electronic component built-in connector is connected to the bus harness so as to be fixed to a vehicle body in the vicinity of the vehicle door electrical component.   The distributed control harness for vehicle door electrical components according to claim 1, wherein the flat bus harness is a flexible flat cable.   A vehicle door electrical component, wherein the distributed control harness according to any one of claims 1 to 3 is routed in a gap formed by a door inner panel and a trim of the vehicle door electrical component mounting portion. The distributed control harness wiring structure.   5. The vehicle door electrical component distributed control harness according to claim 4, wherein the bus harness is routed along one side edge of the vehicle door electrical component mounting opening of the door inner panel. The routing structure.

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