JP2009289550A - Connection structure of division joint box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve downsizing and high densification of a pair of division joint boxes mutually connected via a conductive material. <P>SOLUTION: The division joint boxes 11A, 11B are equipped with a connector housing part 16 to fit a harness connector 32 connected to a circuit conductor 14 of a printed circuit board 13 into the upper wall 12a of a housing 12 to house the printed circuit board 13, and a conductive material insertion port 17 of a relay conductive material 20 to connect between the division joint boxes 11A, 11B at one sidewall 12b of the housing 12, and is connected to the circuit conductor 14 of the printed circuit board 13 by putting both ends of the relay conductive material 20 through the conductive material insertion port 17. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connection structure between a pair of divided joint boxes provided by dividing one large joint box.

A joint connector is used for the connection between electric wires routed in an automobile because the splicing can be reduced to improve harness productivity and the circuit can be divided.
The present applicant provides a joint connector 1 shown in FIGS. 9A and 9B in Japanese Patent Application Laid-Open No. 2004-71184 (Patent Document 1). In the joint connector 1, a plurality of electric wires 3 are jointed by a joint bus bar (not shown) accommodated in one joint member 2, and the plurality of joint members 2 are accommodated in a case 4 and stacked vertically. The bus bars in each joint member 2 are connected by other joint bus bars, and the electric wires 3 connected to different joint members 2 can be connected to each other.

  However, since the joint connector 1 has a configuration in which the joint members 2 are stacked one above the other, there is a problem in that the outer shape increases when the number of joint members 2 to be joined increases. There is a limit. Therefore, when performing complicated connection / branching of many electric wires, a joint box containing a printed circuit board may be used.

  FIG. 10 shows an example of a joint box. The joint box 5 is provided with a plurality of connector accommodating portions 7 on the upper wall of the housing 6, and a printed circuit board (not shown) accommodated in the housing 6. The connected conductor pin protrudes into the connector housing portion 7, and the connector 9 connected to the end of the electric wire 8 is fitted into the connector housing portion 7, and the terminal of the connector 9 and the printed circuit conductor are connected via the conductor pin. Connected. In this way, complicated circuit connection and circuit division are performed by the joint box.

  However, this type of joint box also tends to increase in size due to the increase in the number of printed circuit boards, and is subject to restrictions on the mounting space on the vehicle.

In view of the ease of layout and installation space, the enlarged junction box is divided into a plurality of small joint boxes 101 and 102 as shown in FIG. May be connected via a harness 103.
However, in this case, it is necessary to provide the connector accommodating portions 106 and 107 for fitting the connectors 104 and 105 connected to both ends of the harness 103 on the outer surfaces of the respective housings of the divided joint boxes 101 and 102. The area in plan view of each divided joint box 101, 102 is increased. Alternatively, there is a problem in that the housing space of the connector for splicing reduction or circuit division is reduced, and the utilization efficiency of the outer surface of the housing of each divided joint box 101, 102 is deteriorated.

JP 2004-71184 A

  The present invention has been made in view of the above problems, and the connection structure of each divided joint box obtained by dividing the joint box is simplified to reduce a required space, and the space on the outer surface of the housing of the divided joint box is reduced by a splice. It is an object of the present invention to provide a split joint box connection structure that can be efficiently used as a space for accommodating connectors for reduction or circuit division.

  In order to solve the above-mentioned problems, the present invention connects a pair of divided joint boxes provided by dividing one joint box with a relay conductive material, and each divided joint box accommodates a printed circuit board. A connector housing part for connecting an electric wire connected to a circuit of the printed circuit board on the upper wall of the housing, and a relay conductive material insertion port on one side wall, and both ends of the relay conductive material passing through the insertion port A connection structure for a split joint box is provided, which is connected to a circuit of a substrate.

As described above, the relay conductive material insertion port for connecting the divided joint boxes is provided in the side wall of the housing, and the circuit conductor of the internal printed circuit board is directly connected to the relay conductive material inserted from the insertion port. Thereby, it is not necessary to provide the insertion space of the connector and electrically conductive material for connecting divided joint boxes to the housing upper wall which forms a connector accommodating part.
Therefore, the planar view area of each divided joint box can be reduced, and further miniaturization can be achieved. Alternatively, the space on the upper wall of the housing can be allocated more to the accommodation space for the connector for splicing reduction or circuit division, and the density of the divided joint box can be increased.

A flexible flat cable (FFC) is used as the relay conductive material, a terminal is connected to both ends of each conductor of the FFC, the terminal includes a bent piece formed by bending the front end side, and the bent piece has a V shape. An elastic contact portion is provided as follows, and the elastic contact portion is exposed to attach the FFC connector containing the terminal to both terminals of the FFC.
FFC connectors at both ends of the FFC are inserted into the housing through the conductive material insertion port, and elastic contact portions of the terminals are elastically contacted with a circuit conductor provided in alignment with the peripheral portion of the printed circuit board. is doing.

In this way, by setting the conductive material to be inserted into the insertion port provided on the housing side wall of the split joint box to FFC, the circuit conductor provided in alignment with the peripheral portion of the printed circuit board facing the housing side wall, and the conductive material It becomes easy to directly connect each conductor to each other.
Further, by connecting the FFC connector to the terminal of the FFC, a plurality of conductors of the FFC can be collectively connected to the circuit conductors of the printed circuit board with one touch, and workability is improved and connection stability is improved.

  In addition, the connection method of each conductor and terminal of the FFC may be any of soldering, welding, welding, and pin insertion.

Fitting the connector of the electric wire terminal pulled out from the wire harness to be routed to the automobile into the connector housing part,
The split joint box is mounted by winding a tape or a fastening band around the outer periphery of the wire harness, or a vehicle body locking clip is attached to the split joint box.

  As described above, according to the present invention, by providing the insertion hole of the relay conductive material for connecting the divided joint boxes to the side wall of the housing, the upper wall of the housing forming the connector housing portion is used for connecting the divided joint boxes. Since it is not necessary to provide a space, the area of each divided joint box can be reduced in plan view, and further downsizing can be achieved, or more space on the upper wall of the housing can be used for splice reduction connectors or circuit division. It can be efficiently used as a connector accommodating portion, and the density of the split joint box can be increased.

  In addition, by configuring the relay conductive material for connecting the divided joint boxes with FFC, the relay conductor is inserted from the circuit conductor provided in alignment with the peripheral portion of the printed circuit board facing the side wall of the housing and the insertion opening provided on the side wall of the housing. The respective conductors of the relay conductive material can be opposed to each other, and the direct connection between the circuit conductor of the printed board and the conductor of the relay conductive material can be easily performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show a connection structure of a pair of split joint boxes 11A and 11B according to the first embodiment of the present invention.
The divided joint boxes 11A and 11B are obtained by dividing the joint box 10 that connects the electric wires 31 constituting the wire harness 30 arranged in the automobile, and the divided joint boxes 11A and 11B are connected to each other by the FFC 20. Connected with materials.

  As shown in FIG. 2A, the housing 12 of each of the divided joint boxes 11A and 11B accommodates a printed circuit board 13 in the horizontal direction. A plurality of connector accommodating portions 16 are provided on the upper wall 12 a of the housing 12, and the conductor pins 15 soldered and fixed to the circuit conductor 14 fixed on the upper surface of the printed circuit board 13 are projected into the connector accommodating portion 16. .

  In the one side wall 12 b of the housing 12, a horizontally long conductive material insertion port 17 is formed at a position facing one peripheral edge of the printed circuit board 13. As shown in FIG. 2B, a plurality of FFC connection portions 18 formed by extending the circuit conductors 14 of the printed circuit board 13 to the peripheral portion are provided at a certain interval W1 at the peripheral portion of the printed circuit board 13. The FFC connection portions 18 face the conductive material insertion port 17. The interval W1 is set to be the same as the interval W2 between the conductors 21 of the FFC 20 described later.

  The FFC 20 is a long strip-like flexible harness in which the front and back surfaces of a plurality of conductors 21 juxtaposed in parallel with a predetermined interval W2 are laminated. As shown in FIG. The terminals 22 welded to the ends of the conductors 21 are provided, and as shown in FIGS. 1 and 4, an FFC connector 25 that accommodates the terminals 22 is attached.

  As shown in FIG. 3, the terminal 22 includes a bent piece 23 formed by bending the tip downward, and is provided with an elastic contact portion 24 that protrudes downward with the bent piece 23 having a V shape.

  The FFC connector 25 includes a cover portion 26 made of an insulating resin. As shown in FIG. 4, the terminal 22 is accommodated inside the cover portion 26 and an opening provided on the lower surface on the front end side of the cover portion 26. 27, the elastic contact portion 24 is exposed. On the left and right side walls of the cover portion 26, lock pieces 28 are provided so as to be engaged with the periphery of the conductive material insertion port 17.

  As shown in FIG. 5, FFC connectors 25 at both ends of the FFC 20 are inserted and locked into the conductive material insertion openings 17 of the divided joint boxes 11 </ b> A and 11 </ b> B, and the elasticity of the terminals 22 connected to the conductors 21 of the FFC 20. The split joint boxes 11A and 11B are connected to each other by bringing the contact portion 24 into elastic contact with the FFC connection portion 18 of the printed circuit board 13 in each split joint box 11A and 11B. As shown in FIG. 6, a harness connector 32 connected to the end of the electric wire 31 drawn out from the wire harness 30 is fitted into the connector housing portion 16 of the divided joint boxes 11A and 11B. , 11B, the circuit conductor 14 of the printed circuit board 13 and the electric wire 31 are connected via the conductor pin 15.

  As shown in FIG. 6, the split joint boxes 11 </ b> A and 11 </ b> B that are fitted and connected to the harness connector 32 and connected to each other via the FFC 20 are wound and fixed with the tape 35 around the outer periphery of the wire harness 30. Yes.

  In the connection structure, since the conductive material insertion port 17 of the FFC 20 that connects between the divided joint boxes 11A and 11B is provided not on the upper wall 12a of the housing 12 but on the side wall 12b, the area of the housing 12 in plan view is reduced. Thus, the split joint boxes 11A and 11B can be downsized. Further, since more space on the upper surface of the housing of the split joint boxes 11A and 11B can be effectively used as a storage space for the harness connector 32, the number of harness connectors 32 connected to the split joint boxes 11A and 11B can be increased. High density can be achieved.

  Further, since the FFC 20 is used as the conductive material for connecting the divided joint boxes 11A and 11B, the interval W2 between the conductors 21 of the FFC 20 and the interval W1 of the FFC connection portion 18 of the printed circuit board 13 are set to the same size. Then, as shown in FIGS. 2B and 5, the terminal 22 connected to the terminal of the conductor 21 of the FFC 20 and the FFC connection portion 18 formed on the peripheral portion of the printed circuit board 13 are easily connected to each other. can do. Furthermore, by attaching the FFC connector 25 to the terminal of the FFC 20, the connection between the divided joint boxes 11A and 11B via the FFC 20 can be easily performed with one touch.

7 and 8 show a second embodiment of the present invention.
In the present embodiment, the clip 19 is projected from the outer surface of the bottom wall 12c of the housing 12 of the split joint boxes 11A and 11B, and the clip 19 is inserted into the locking hole 37 of the vehicle body panel 36 as shown in FIG. The split joint boxes 11A and 11B are fixed to the vehicle body panel 36 by locking. Other configurations are the same as those in the first embodiment.

  In addition, this invention is not limited to the said embodiment, You may use a fastening band as a means to fix division | segmentation joint box 11A, 11B to the wire harness 30. FIG.

It is a disassembled perspective view which shows the connection structure of the division | segmentation joint box which concerns on 1st embodiment of this invention. The internal structure of a division | segmentation joint box and the terminal part of FFC are shown, (A) is a side view, (B) is a top view. It is a perspective view which shows the terminal connected to the terminal of FFC. It is a perspective view which shows the state which attached the FFC connector to FFC. It is explanatory drawing which shows the connection structure of the printed circuit board circuit of a division | segmentation joint box, and FFC. It is a perspective view which shows the state which fixed the division | segmentation joint box to the wire harness. It is a perspective view which shows the division | segmentation joint box which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the state which fixed the division | segmentation joint box shown in FIG. 7 to the vehicle body panel. It is a figure which shows a prior art example. It is a figure which shows another prior art example. It is a figure which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Joint box 11A, 11B Split joint box 12 Housing 13 Printed circuit board 14 Circuit conductor 16 Connector accommodating part 17 Conductive material insertion port 18 FFC connection part 20 FFC (conductive material)
22 terminal 25 FFC connector 30 wire harness 31 wire 32 harness connector

Claims (3)

A pair of split joint boxes provided by dividing one joint box are connected by a relay conductive material,
Each of the split joint boxes includes a connector housing portion for connecting an electric wire connected to a circuit of the printed circuit board on an upper wall of a housing that houses the printed circuit board, and a relay conductive material insertion port on one side wall.
A split unit connection structure, wherein both ends of the relay conductive material are connected to a circuit of the printed circuit board through the insertion opening. A flexible flat cable (FFC) is used as the relay conductive material, a terminal is connected to both ends of each conductor at both ends of the FFC, and the terminal includes a bent piece formed by bending the distal end side. An elastic contact portion is provided as a V shape, the elastic contact portion is exposed and accommodated in the FFC connector,
Circuit conductors in which the FFC connectors at both ends of the FFC are inserted into the housing through the relay conductive material insertion ports of the pair of divided units, and the elastic contact portions of the terminals are aligned with the peripheral portion of the printed circuit board The connection structure of the division | segmentation unit of Claim 1 currently connected in elastic contact. Fit the connector of the electric wire terminal to be pulled out from the wire harness routed to the automobile into the connector housing portion of each of the divided joint boxes,
The connection of the division | segmentation unit of Claim 1 or Claim 2 which mounts the said division | segmentation joint box by winding a tape or a fastening band around the outer periphery of a wire harness, or has attached the clip for a vehicle body to the said division | segmentation joint box. Construction.

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