JP2007055444A - Connector joining structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance manufacturing efficiency of a wire harness by improving the array of the wire harness joined to an electronic control unit, and improve heat dissipation property in the electronic control unit. <P>SOLUTION: The unit side connectors 12, 13 provided on an engine control unit 11 mounted on a vehicle, and the harness side connectors 21, 22 joined to the terminal of the wire harness are joined in a connector joining structure. The wire harness is divided into a large current power system electric wire group and a small current signal system electric wire group, and joined to the harness side connector so that the power system electric wire group is joined to the outside position of the unit side connector, and the power system electric wire group and the signal system electric wire group are classified according to the kinds of the electric wire of splice electric wire, a single wire of non splice, a shield electric wire, and a twist pair electric wire, and joined to the harness side connector by arranging and arraying for each electric wire kinds. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connector connection structure, and more specifically, to connect an electronic control unit such as an engine control unit mounted on an automobile and a wire harness, and to improve the arrangement of electric wires constituting the wire harness. is there.

Conventionally, a wire harness routed in an automobile may be formed by combining various types of wires such as a splice wire, a non-splice single wire, a shielded wire, a twisted pair wire, and the like. The connector connected to is connected to an electronic control unit or the like mounted on the automobile.
If a wire harness with multiple types of wires mixed in this way is irregularly connected to the connector, the manufacturing efficiency of the wire harness will be reduced, and different types of wires will be entangled, making it difficult to insert the terminals into the connector. In addition, there is a problem that the wiring work of the wire harness becomes difficult.

Therefore, in Japanese Patent Application Laid-Open No. 2005-19257 (Patent Document 1), the wires constituting the wire harness are classified into shield wires, twisted pair wires, general wires, and thick wires, and sub-harnesses are formed for each type of wires. And the wire harness formed combining these subharnesses is provided.
According to the said structure, although the manufacturing efficiency of a wire harness can be improved, it is only considered to divide a wire harness for every electric wire type, and what kind of arrangement | sequence is connected to an electronic control unit etc. is not considered at all. .
JP 2005-19257 A

  The present invention has been made in view of the above problems, and it is an object to improve the arrangement of the wire harness connected to the electronic control unit to increase the manufacturing efficiency of the wire harness and to improve the heat dissipation in the electronic control unit. It is said.

In order to solve the above problems, the present invention is a connector connection structure between a unit side connector provided in an electronic control unit mounted on a vehicle and a harness side connector connected to a terminal of a wire harness,
The wire harness is divided into a high current power system electric wire group and a small current signal system electric wire group, and the power system electric wire group is connected to the harness side connector so as to be connected to an outer position of the unit side connector,
In addition, the power system electric wire group and the signal system electric wire group are classified according to the types of the splice electric wire, the non-spliced single wire, the shielded electric wire, and the twisted pair electric wire, respectively. A connector connection structure characterized by being connected to a side connector is provided.

According to the above configuration, first, since the power system electric wire group with a large current is arranged on the outer side of the electronic control unit and the signal system electric wire group with a small current is on the inner side of the electronic control unit, Power system electric wire group with many can be arrange | positioned in the case side wall vicinity of an electronic control unit, and can improve heat dissipation. As a result, heat accumulated in the electronic control unit can be reduced, and failure of the board in the electronic control unit and the electronic components mounted on the board can be prevented.
Further, not only the wire harness is arranged separately for the power system and the signal system, but also the electric wires are arranged for each electric wire type and connected to the harness side connector in the power system electric wire group and the signal system electric wire group. That is, in the power system wire group and the signal system wire group, the wires are each a single wire that is made of a round wire with an insulation coating on the core wire and is not spliced, a splice wire in which multiple round wires are spliced, a shielded wire, a twisted pair They are classified into electric wires and the like, and the same type of electric wires are arranged together. Thereby, while being able to raise the manufacturing efficiency of a wire harness, the tangle between different types of electric wires can be reduced, and the terminal insertion work to the harness side connector and the wiring work of the wire harness can be facilitated. Specifically, the entanglement between the single wire and the shielded wire can be eliminated, and the twisted-pair wire and the splice wire can be removed later.

The unit-side connector comprises a connector mounted along one side of the board accommodated in the electronic control unit,
A power system terminal in the unit side connector connected to the power system electric wire group is disposed at an outer position of the substrate, and a power system circuit formed on the substrate connected to the power system terminal is also a substrate. The power system terminal and the power system circuit through which the large current is passed are disposed close to the case side wall formed of the heat dissipation material of the electronic control unit.

  According to the above configuration, since the power system terminals connected to the power system electrical wire group as well as the power system electrical wire group and the power system circuit are arranged in the vicinity of the case side wall of the electronic control unit, The heat generated from the circuit can also be efficiently dissipated, and the heat dissipation can be further improved.

The harness side connector is configured to be internally fitted and connected to the unit side connector,
The unit-side connector and the harness-side connector are each composed of 2 to 4, and the harness-side connector is preferably a lever-type connector.

  According to the above configuration, by dividing the unit side connector and the harness side connector into a plurality, the number of poles per connector can be reduced and the insertion force at the time of connector fitting can be reduced. Moreover, the insertion force of a connector can further be reduced by setting it as a lever type connector.

Examples of the electronic control unit include an engine control unit mounted on an automobile.
Since a large number of power wires and signal wires are connected to the engine control unit, the connection structure of the present invention is preferably employed.

As described above, according to the present invention, since the power system electric wire group is arranged on the outer side of the electronic control unit and the signal system electric wire group is on the inner side of the electronic control unit, A system electric wire group can be arrange | positioned in the case side wall vicinity of an electronic control unit, and can improve heat dissipation. As a result, heat accumulated in the electronic control unit can be reduced, and failure of the board in the electronic control unit and the electronic components mounted on the board can be prevented.
In addition, because the wires are arranged for each wire type in the power wire group and the signal wire group and connected to the harness side connector, tangling between different types of wires can be reduced, and terminals to the harness side connector can be reduced. The insertion work and the wiring work of the wire harness can be facilitated.

Embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention. A connector connection structure 10 according to this embodiment includes an engine control unit 11 (electronic control unit) that controls the injection amount of fuel and coolant, and an automobile. It connects with the wire harness routed to the engine room.

  As shown in FIG. 1, a lever-type harness-side connector 21 connected to a terminal of an engine harness W / H1 connected to the engine and a lever connected to a terminal of an engine room main harness W / H2 routed in the engine room The harness-side connector 22 of the type is connected by being fitted into unit-side connectors 12 and 13 provided on the same side surface of the engine control unit 11 in a parallel state.

  As shown in FIG. 3, the engine harness W / H1 is composed of a large-current power system wire group W / H1A serving as a power circuit for load operation and a small-current signal system wire group W / H1B serving as a signal circuit. . The power system electric wire group W / H1A is connected to the harness side connector 21 so as to be connected to the outside position of the unit side connector 12. That is, as shown in FIG. 2, the power wire group W / H1A is arranged on the outer side of the engine control unit 11 with the harness side connector 21 connected to the unit side connector 12 of the engine control unit 11. The power system electric wire group W / H1A is connected to one of the harness side connectors 21 together. Similarly, in the state where the harness side connector 21 is connected to the unit side connector 12 of the engine control unit 11, the other side of the harness side connector 21 is arranged so that the signal system electric wire group W / H1B is arranged inside the engine control unit 11. The signal system electric wire group W / H1B is connected together.

  Moreover, when the power system electric wire group W / H1A is separated by the type of the electric wire, the non-spliced single wire w1 which is made of a round electric wire having an insulation coating on the core wire and is not spliced, and the splice electric wire w2 which is a splice connection of a plurality of round electric wires. It is divided into. Instead of mixing these power single wires w1 and splice wires w2 and connecting them to the harness-side connector 21, as shown in FIG. 2, the single wires w1 are inserted into the terminal accommodating chamber 31 in the region S1 and the female terminals 23 of the wire terminals. The splice wire w2 is connected to the terminal accommodating chamber 32 in the region S2 by inserting and locking the female terminal 23 of the wire terminal. That is, the electric wires are arranged for each electric wire type in the power system electric wire group W / H1A and connected to the harness side connector 21.

Similarly, when the signal system electric wire group W / H1B is separated by the type of electric wire, it is divided into a shielded electric wire w3, a twisted pair electric wire w4, and a single wire w5. These signal-type shielded wires w3, twisted pair wires w4, and single wires w5 are not mixed and connected to the harness-side connector 21, but as shown in FIG. 2, the shielded wires w3, twisted pair wires w4, and single wires w5 are respectively connected to the region S3. , S4 and S5 are connected to the terminal accommodating chambers 33, 34, and 35 by inserting and locking the female terminals 23 of the wire terminals. That is, the electric wires are arranged for each electric wire type in the signal system electric wire group W / H1B and connected to the harness side connector 21.
A connector 24 connected to a load component is connected to the terminal on the opposite side of the harness side connector 21 of each wire. For example, a power splice wire w2 is connected to an engine injector, and a signal shield wire w3 is connected to a power component. Connected to various sensor devices.

  On the other hand, the engine room main harness W / H2 is also composed of a power wire group W / H2A and a signal wire group W / H2B. In detail, a power single wire w6, a power splice wire w7, a signal shield They are separated into an electric wire w8, a signal twisted pair electric wire w9, and a signal single wire w10. These power single wire w6, splice wire w7, signal shield wire w8, twisted pair wire w9, and single wire w10 are sequentially arranged from the side corresponding to the outer portion of the engine control unit 11 in the regions S6, S7, S8 of the harness side connector 22. The female terminal 23 of the electric wire terminal is inserted and locked to the terminal accommodating chambers 36, 37, 38, 39, and 40 provided in S9 and S10.

  As shown in FIG. 4, the harness side connectors 21 and 22 divide a part to be fitted with the unit side connectors 12 and 13 into a plurality of parts, and provide a plurality of fitting parts 21 a and 22 a. The rubber packing 24 for water stop is attached to the outer peripheral surface of the base end part of 21a, 22a. The rubber packing 24 has a concavo-convex shape in which concave portions and convex portions are alternately provided on the outer surface.

The engine control unit 11 houses a printed circuit board 15 in an aluminum case 14 serving as a heat dissipation material, and unit-side connectors 12 and 13 mounted along one side of the printed circuit board 15 are provided on the same side wall of the case 14. It protrudes outside from the opening. As shown in FIG. 5, one end 17 a of the male terminal 17 is accommodated in the unit side connectors 12 and 13, while the other end 17 b of the male terminal 17 is connected to the conductor 16 of the printed circuit board 15.
The male terminal 17 includes a power system terminal 17A connected to the power system electric wire groups W / H1A and W / H2A and a signal system terminal 17B connected to the signal system electric wire groups W / H1B and W / H2B. The power system terminal 17A is disposed outside the printed circuit board 15, that is, in the vicinity of the side wall of the case, while the signal system terminal 17B is disposed at the center position of the printed circuit board 15, that is, at the center of the case.
Similarly, the conductor 16 includes a power system circuit 16A that is electrically connected to the power system electric wire groups W / H1A and W / H2A, and a signal system circuit 16B that is electrically connected to the signal system electric wire groups W / H1B and W / H2B. . The power system circuit 16A is disposed outside the printed circuit board 15, that is, in the vicinity of the case side wall, while the signal system circuit 16B is disposed at the center position of the printed circuit board 15, that is, at the case center side.
Further, ribs 12a and 13a for preventing twisting are provided in the unit side connectors 12 and 13, and the unit side connectors 12 and 13 are divided into a plurality of parts.

  When the harness-side connectors 21 and 22 are aligned with the unit-side connectors 12 and 13 and the levers on the harness-side connectors 21 and 22 are rotated and fitted, as shown in FIG. The female terminal 23 connected to the inner wire terminal and the one end 17a of the male terminal 17 protruding into the unit side connectors 12 and 13 are fitted and connected. Thereby, the engine harness W / H1, the engine room main harness W / H2, and the conductor 16 of the printed circuit board 15 in the engine control unit 11 are electrically connected. At this time, the ribs 12a and 13a of the unit-side connectors 12 and 13 are inserted between the fitting portions 21a and 22a of the harness-side connectors 21 and 22, and the twisting at the time of insertion is prevented. Further, the rubber packing 24 attached to the fitting portions 21a and 22a of the harness side connectors 21 and 22 is brought into close contact with the inner surfaces of the unit side connectors 12 and 13, so that the fitting portions of the connectors are not flooded. Yes.

According to the configuration, the power system electric wire groups W / H1A and W / H2A are on the outer side of the engine control unit 11, and the signal system electric wire groups W / H1B and W / H2B are on the inner side of the engine control unit 11. Since they are arranged, the power system electric wire groups W / H1A and W / H2A that generate a large amount of heat can be arranged in the vicinity of the case side wall of the engine control unit 11, and heat dissipation can be improved. As a result, heat trapped in the engine control unit 11 can be reduced, and failure of the printed circuit board 15 in the engine control unit 11 and electronic components mounted on the printed circuit board 15 can be prevented.
In addition, since the electric wires are arranged for each electric wire type in the power electric wire groups W / H1A and W / H2A and in the signal electric wire groups W / H1B and W / H2B and connected to the harness side connectors 21 and 22. Further, the entanglement between the different types of electric wires can be reduced, and the terminal insertion work to the harness side connectors 21 and 22 and the wiring work of the wire harness can be facilitated.
In addition, if the fitting parts 21a and 22a can be moved within a required range in the vertical and horizontal directions with respect to the connectors 21 and 22, the insertion force at the time of connector fitting can be reduced.

FIG. 6 shows a second embodiment of the present invention.
In the present embodiment, one unit-side connector is provided on one side wall of the engine control unit, and one harness-side connector 50 connected to the end of the wire harness W / H is fitted and connected. The wire harness W / H is composed of a power single wire w 1 ′, a power splice wire w 2 ′, and a signal shield wire w 3 ′. A signal shield wire w 3 ′ is provided at the center of the harness side connector 50. In addition to being connected, a power single wire w1 ′ and a splice wire w2 ′ are connected to both sides of the shielded wire w3 ′.

When the harness-side connector 50 is fitted to the unit-side connector, the power single wire w1 ′ and the splice wire w2 ′ are arranged near both sides of the engine control unit, while the signal shield wire w3 ′ is the center of the engine control unit. Placed in the section. Thereby, like 1st Embodiment, the power type electric wire, terminal, and circuit with much calorific value can be arrange | positioned in the case side wall vicinity of an engine control unit, and heat dissipation can be improved.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

It is a perspective view which shows the connector connection structure of 1st Embodiment of this invention. It is a front view of a harness side connector. It is the schematic which shows the connection relation of a harness side connector and a wire harness. It is a horizontal sectional view of the harness side connector and unit side connector which were made to fit. It is the vertical sectional view of the harness side connector and unit side connector which were made to fit. It is the schematic which shows the connection relation of the harness side connector and wire harness of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connection structure of electronic control unit and wire harness 11 Engine control units 12, 13 Unit side connector 15 Printed circuit board 16 Conductor 16A Power system circuit 16B Signal system circuit 17 Male terminal 17A Power system terminal 17B Signal system terminals 21, 22, 50 Harness side connector 23 Female terminal W / H Wire harness W / H1 Engine harness W / H1A Power system wire group W / H1B Signal system wire group W / H2 Engine room main harness W / H2A Power system wire group W / H2B Signal system wire Groups w1, w6 Power system single wires w2, w7 Power system splice wires w3, w8 Signal system shield wires w4, w9 Signal system twisted pair wires w5, w10 Signal system single wires

Claims (4)

A connector connection structure between a unit side connector provided in an electronic control unit mounted on a vehicle and a harness side connector connected to a terminal of a wire harness,
The wire harness is divided into a high current power system electric wire group and a small current signal system electric wire group, and the power system electric wire group is connected to the harness side connector so as to be connected to an outer position of the unit side connector,
In addition, the power system electric wire group and the signal system electric wire group are classified according to the types of the splice electric wire, the non-spliced single wire, the shielded electric wire, and the twisted pair electric wire, respectively. A connector connection structure characterized by being connected to a side connector. The unit-side connector comprises a connector mounted along one side of the board accommodated in the electronic control unit,
A power system terminal in the unit side connector connected to the power system electric wire group is disposed at an outer position of the substrate, and a power system circuit formed on the substrate connected to the power system terminal is also a substrate. 2. The connector connection structure according to claim 1, wherein a power system terminal and a power system circuit through which a large current is passed are disposed close to a case side wall formed of a heat radiating material of the electronic control unit. . The harness side connector is configured to be internally fitted and connected to the unit side connector,
The connector connection structure according to claim 1 or 2, wherein the unit-side connector and the harness-side connector each include 2 to 4, and the harness-side connector is a lever-type connector.   The connector connection structure according to any one of claims 1 to 3, wherein the electronic control unit is an engine control unit mounted on an automobile.

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