JP2010226912A - Electric connection box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a manufacturing cost, and to increase the degree of freedom in connections between terminals. <P>SOLUTION: An electric connection box 30 includes a first box member 21 and a second box member 22 mounted so as to be suitable for the first box member 21. The electric connection box 30 further includes an insulating substrate 10 fixed between the first box member 21 and the second box member 22 and provided with a plurality of terminals 11 exposed from the first box member 21 respectively. In the electric connection box 30, at least two of the plurality of terminals 11 are connected through insulated wires including conductors composed of solid wires. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electrical junction box, and more particularly to an electrical junction box for connecting and branching various wirings.

The electrical connection box is called a junction box or a joint box, and has a plurality of terminals connected according to a predetermined connection relationship, and is an electrical component for connecting and branching various wirings. As a structure of this electric junction box, a bus bar method (for example, refer to Patent Document 1), a pressure contact connection method (for example, refer to Patent Documents 2 to 4), an FFC (Flexible Flat Circuit) method (for example, refer to Patent Document 5), etc. Things have been proposed.
JP 2001-286035 A JP 2005-86909 A JP-A-2005-93216 JP 2008-86070 A Republished Patent Publication WO2005 / 096683

  Here, in the manufacture of the electric connection box of the bus bar method and the FFC method, the metal plate and the metal foil are each punched into a predetermined shape to form a circuit pattern for connecting between the terminals. In many cases, it is necessary to prepare a punching die for each circuit pattern. Therefore, the bus bar type and FFC type electric junction boxes have a problem that the manufacturing cost is mainly increased.

  Moreover, the electrical connection box of a press-contact connection system has a groove formed so as to press-contact an internal electric wire for connecting the terminals to one end of each terminal. Here, when the inner wire is pressed against the terminal, if the end of the inner wire is pushed into the groove of the terminal, the insulating layer on the surface of the inner wire is broken by the inner blade of the groove and the inner conductor is exposed. In addition, when the end of the internal electric wire is pushed deeply into the groove of the terminal, the inner blade of the groove bites into the exposed conductor, and conduction between the terminal and the internal electric wire is ensured. However, when the insulation layer of the internal electric wire is insufficiently broken, conduction may not be ensured, and connection reliability may be a problem. Moreover, in order to make the inner blade of a groove | channel bite into a conductor, it is necessary to process the edge part of a terminal. Further, since the internal electric wire is pressed into the groove at the end of the terminal, the diameter of the internal wiring that can be pressed is limited. Further, since the conductor of the internal electric wire is bitten into the inner blade of the terminal groove and the internal electric wire is pressed into the groove of the terminal, a plurality of internal wires cannot be pressed into one terminal. For this reason, there is room for improvement mainly in the connectivity between terminals in the electrical connection box of the pressure connection system.

  This invention is made | formed in view of this point, The place made into the objective is to reduce manufacturing cost and to improve the freedom degree of the connection between terminals.

  In order to achieve the above object, according to the present invention, at least two of a plurality of terminals provided on an insulating substrate are connected via an insulated wire in which a conductor is formed of a single wire.

  Specifically, an electrical junction box according to the present invention includes a first housing member, a second housing member provided so as to be fitted to the first housing member, the first housing member, and the second housing member. An electrical junction box comprising an insulating substrate fixed between the housing members and provided with a plurality of terminals so as to be exposed from each of the first housing members, wherein at least two of the plurality of terminals Is characterized in that the conductors are connected via an insulated wire composed of a single wire.

  According to said structure, the circuit pattern for connecting between terminals is not the punching pattern used with the electrical connection box of the conventional bus-bar system and FFC system, but is comprised with the insulated wire by which the conductor was comprised with the single wire. Therefore, there is little loss of the metal material which comprises a circuit pattern, and the metal mold | die for punching becomes unnecessary. Therefore, according to said structure, manufacturing cost is reduced rather than the electrical junction box of the conventional bus-bar system and FFC system. Moreover, since each terminal and the insulated wire are connected by welding, for example, it is not necessary to process one end of each terminal into a shape that can be crimped. Furthermore, since the conductor which comprises an insulated wire is not a double strand strand but a single wire, the material cost of insulated wire itself is reduced. Therefore, according to said structure, manufacturing cost is reduced rather than the electrical junction box of the conventional press-contact connection system. Moreover, since each terminal and the single insulated wire are connected by welding, for example, conduction between each terminal and the insulated wire is ensured, and the diameter of the connectable insulated wire is difficult to be limited. Therefore, according to said structure, the freedom degree of the connection between terminals improves rather than the electrical connection box of the conventional press-contact connection system. Therefore, the manufacturing cost can be reduced and the degree of freedom of connection between terminals can be improved.

  A plurality of the insulated wires may be connected to at least one of the plurality of terminals.

  According to the above configuration, since a plurality of insulated wires are connected to at least one of the plurality of terminals, it is possible to connect or branch the wires to the power supply power line.

  At least two of the plurality of terminals may be connected on the second housing member side of the insulating substrate.

  According to the above configuration, since at least two of the plurality of terminals are connected on the second housing member side of the insulating substrate, at least two of the plurality of terminals are specifically connected on the side where each terminal is not exposed. The

  A connection portion between each terminal and the insulated wire may be covered with a mold resin.

  According to said structure, since the connection part of each terminal and an insulated wire is covered with mold resin, while corrosion of the connection part of each terminal and an insulated wire is suppressed, each terminal and an insulated wire The connecting part is reinforced.

  According to the present invention, since at least two of the plurality of terminals provided on the insulating substrate are connected via the insulated wire in which the conductor is formed of a single wire, the manufacturing cost is reduced and the connection between the terminals is reduced. The degree of freedom can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

Embodiment 1 of the Invention
1 to 4 show Embodiment 1 of an electrical connection box and an electrical connection board according to the present invention. Specifically, FIG. 1 is an exploded perspective view of the electrical junction box 30 of the present embodiment. 2 is a cross-sectional view of the electrical connection board 20a constituting the electrical connection box 30, and FIG. 3 is a circuit diagram of the electrical connection board 20a. FIG. 4 is a plan view schematically showing another configuration example of the lower surface side of the electrical connection board 20a.

  As shown in FIG. 1, the electrical junction box 30 is formed in a resin-made upper case 21 provided as a first housing member in a substantially rectangular shallow dish shape that is reversed upside down and the upper case 21 (peripheral edges). A lower case 22 made of resin provided as a second housing member in a substantially rectangular shallow dish shape so as to be fitted, and an electrical connection board 20a fixed between the upper case 21 and the lower case 22 I have.

  As shown in FIG. 1 and FIG. 2, the electrical connection substrate 20 a includes a resin insulating substrate 10 in which a plurality of terminal holding holes H are formed, and a plurality of press-fitted into each terminal holding hole H of the insulating substrate 10. A terminal 11 (11a to 11b) and a plurality of insulated wires 12 for connecting at least two of the plurality of terminals 11 to each other on the lower case 22 side of the insulating substrate 10 are provided. And in the electrical connection board | substrate 20a, as shown in FIG.2 and FIG.3, the circuit pattern for connecting between terminals connects the terminals 11a, 11b, 11c, and 11d mutually, and connects the terminals 11e and 11f mutually. It is configured as follows.

  The insulating substrate 10 is formed of, for example, a thermoplastic resin or a thermosetting resin.

  The terminal 11 is configured, for example, by forming an Sn plating layer on the surface of a copper rod-shaped metal material. Further, the upper portion of the terminal 11 is configured to fit into a male metal fitting or a female metal fitting (not shown) of various external parts such as a connector, a fuse, and a relay and to be exposed from the upper case 21. Yes. Here, when connecting a plurality of insulated wires 12 to the terminal 11, it is necessary to secure a connection portion with each insulated wire 12. For example, the length of the terminal 11 that protrudes from the insulated substrate 10 is set. The protruding length of each terminal 11 may be adjusted as appropriate, for example, by matching the terminal 11 to which the insulated wire 12 is connected. In the present embodiment, as illustrated in FIG. 1, as the shape of the upper portion of the terminal 11, a simple shape having a rectangular cross section is illustrated, but the shape of the upper portion of the terminal 11 may be the above male fitting or A complicated shape may be formed by punching in accordance with the internal structure of the female metal fitting.

  As shown in FIG. 2, the insulated wire 12 includes a conductor 12a having a substantially circular cross section made of a single wire, and an insulating layer 12b provided so as to cover the conductor 12a.

  The conductor 12a is preferably a copper wire annealed after being drawn. And according to this, since the hardness of the conductor 12a becomes lower than the case where it does not anneal, the deformation | transformation at the time of wiring of the insulated wire 12 becomes easy. The cross-sectional area of the conductor 12a may be set as appropriate depending on the magnitude of the flowing current, and may be adjusted by the number of insulated wires 12 connected via the terminal 11.

  The insulating layer 12b is formed by, for example, coating a side surface of the conductor 12a with a non-halogen resin material or the like by a known extruder or tubing processing machine. Further, at the end of the insulated wire 12, the conductor 12a is exposed from the insulating layer 12b, and the exposed portion is connected to the terminal 11 by welding.

The welded portion (connecting portion) between the insulated wire 12 and each terminal 11 and the lower portion of each terminal 11 are covered with a mold resin 13 provided between the insulating substrate 10 and the lower case 22, as shown in FIG. Therefore, damage to the connection portion due to external force (for example, vibration) can be suppressed, and contact between the metal portion and moisture can be suppressed, and corrosion of the connection portion and each terminal 11 can be suppressed. Each terminal 11 is configured such that at least a portion that fits into the male metal fitting or the female metal fitting is exposed from the mold resin 13. And the electrical junction box which has such an aspect is suitable for the electrical junction box for outboard motors used in a vibration environment or a corrosive (fresh water, seawater) environment. Here, the mold resin 13 is a molding resin injected at a low pressure of 700 N / cm ² or less (lower limit: 10 N / cm ² or more). Therefore, when filling the resin, high pressure (3500 N / cm ^{2 to} 4500 N / cm ² ) as in general injection molding is not required. Damage to the welded portion (connecting portion) between the terminal 12 and each terminal 11 can be suppressed. As the mold resin 13, specifically, a polyester resin, for example, a dicarboxylic acid component containing 60 mol% or more of terephthalic acid and / or naphthalenedicarboxylic acid, and 1,4-butanediol and / or ethylene glycol is 40. A polyester resin composed of a diol component containing at least mol% is preferably used.

  In the present embodiment, as illustrated in FIG. 2, the configuration in which the insulated wire 12 extends along the arrangement direction in the terminal group including the plurality of terminals 11 arranged along a certain direction is illustrated. 12 may extend in a direction intersecting with the arrangement direction of the terminals 11. That is, as shown in FIG. 4, the insulated wire 12 may be stretched in a network shape on the surface of the insulating substrate 10 (for example, the surface on the lower case 22 side). Here, in the configuration example of FIG. 4, a fuse part F, a connector part C, and a relay part R each having a plurality of terminals 11 are defined on the insulating substrate 10 and are in contact with the insulated wire 12. Thus, the wiring restricting portion P for visually confirming the wiring of the insulated wire 12 is provided in a columnar shape. Note that the wiring restricting portion P may be provided in the upper case 21 or the lower case 22.

  On the upper surface of the upper case 21, as shown in FIG. 1, a plurality of component insertion portions 21a are provided in a concave shape for inserting and housing a part of various external components such as connectors, fuses, and relays. It has been. And the opening part for exposing the upper part of each terminal 11 is provided in the bottom face of each component insertion part 21a. Further, as shown in FIG. 1, a plurality of lock portions 21 b are provided on the periphery of the upper case 21 so as to be fitted to lock portions 22 b of the lower case 22 described later.

  On the upper surface of the lower case 22, as shown in FIG. 1, a plurality of frame portions 22a are arranged in a lattice shape. Further, as shown in FIG. 1, a plurality of lock portions 22 b protruding sideways are provided on the periphery of the lower case 22 so as to be fitted to the lock portions 21 b of the upper case 21.

  Next, an example is given and demonstrated about the method of manufacturing the electrical-connection box 30 of this embodiment.

<Preparation process>
For example, the insulating substrate 10, the upper case 21, and the lower case 22 are respectively prepared by injection molding or press molding of a thermoplastic resin, a thermosetting resin, or the like. Here, each terminal holding hole H of the insulating substrate 10 is formed at the time of molding, or by cutting or drilling after molding.

  Further, after punching a metal plate such as a copper plate to form a rod-shaped metal material, a terminal 11 is prepared by forming an Sn plating layer on the surface of the metal material.

  Further, by covering the side surface of the conductor 12a having a substantially circular cross section that has been drawn or annealed after being drawn, by covering the insulating layer 12b by extrusion or tubing, an insulated wire 12 is prepared.

<This process>
First, the terminals 11 are press-fitted into the respective terminal holding holes H of the insulating substrate 10 prepared in the preparation step.

  Subsequently, the insulating layer 12b at the end of the insulated wire 12 prepared in the preparation step is peeled off at the end of each terminal 11 press-fitted into the insulating substrate 10 to expose the conductor 12a. Each terminal 11 and the exposed conductor 12a of the insulated wire 12 are connected by soldering or the like with solder. In the present embodiment, the method of press-fitting each terminal 11 into the insulating substrate 10 in which the terminal holding holes H are formed is exemplified. For example, a plurality of terminals are set in advance in a mold for injection molding the insulating substrate. Then, each terminal may be held and fixed to the insulating substrate by injection molding the insulating substrate.

  Furthermore, for example, dicarboxylic acid containing, for example, 60 mol% or more of terephthalic acid and / or naphthalenedicarboxylic acid on the surface of the insulating substrate 10 to which the terminal 11 and the insulated wire 12 are connected on the side where the insulated wire 12 is formed. After applying a polyester resin composed of a component and a diol component in which 1,4-butanediol and / or ethylene glycol contains 40 mol% or more, the resin is dried to form a mold resin 13. Thereby, while connecting the connection part of each terminal 11 and the insulated wire 12, and each terminal 11 with the mold resin 13, while suppressing the corrosion of the connection part of each terminal 11 and the insulated wire 12, and each terminal 11 The connection part of each terminal 11 and the insulated wire 12 is reinforced. The mold resin 13 may be reduced in weight by blending a foaming agent inside the mold resin 13 and foaming the foaming agent.

  Finally, the manufactured electrical connection board 20a is arranged between the upper case 21 and the lower case 22 prepared in the preparation step, and the lock portion 21b of the upper case 21 and the lock portion 22b of the lower case 22 are arranged. Are fixed between the upper case 21 and the lower case 22.

  As described above, the electrical junction box 30 of the present embodiment can be manufactured. In the present embodiment, the method of applying the resin constituting the mold resin 13 to the back surface of the insulating substrate 10 is exemplified. However, the insulating substrate 10 to which the terminals 11 and the insulated wires 12 are connected is connected to the upper case 21 and the lower case. After fixing between 22, resin may be filled between the insulating substrate 10 and the lower case 22.

  As described above, according to the electrical connection board 20a of the present embodiment and the electrical connection box 30 including the same, the circuit pattern for connecting the terminals is a conventional busbar type and FFC type electrical connection box. Since the conductor 12a is constituted by the insulated wire 12 made of a single wire, not the punching pattern to be used, the loss of the metal material constituting the circuit pattern is small, and a punching die is not required. Therefore, according to the electrical junction box 30 of the present embodiment, the manufacturing cost can be reduced as compared with the conventional busbar type and FFC type electrical junction boxes. Moreover, since each terminal 11 and the insulated wire 12 are connected by welding, it is not necessary to process one end of each terminal 11 into a shape that can be crimped. Furthermore, since the conductor 12a that constitutes the insulated wire 12 is not a double stranded wire but a single wire, the material cost of the insulated wire itself can be reduced. Therefore, according to the electrical junction box 30 of this embodiment, manufacturing cost can be reduced compared with the electrical junction box of the conventional press-contacting connection system. Moreover, since each terminal 11 and the single insulated wire 12 are connected by welding, conduction between each terminal 11 and the insulated wire 12 is ensured, and the diameter of the connectable insulated wire 12 is not easily limited. . Furthermore, since at least two terminals of the plurality of terminals 11 are connected via the insulated wires 12, the plurality of insulated wires 12 can be easily connected to one terminal 11. Therefore, according to the electrical connection box 30 of the present embodiment, the degree of freedom of connection between the terminals can be improved as compared with the electrical connection box of the conventional press-contact connection method. Can respond. Therefore, the manufacturing cost can be reduced and the degree of freedom of connection between terminals can be improved.

  According to the electrical connection board 20a of the present embodiment and the electrical connection box 30 including the same, the portion where the terminal holding holes H of the insulating board 10 are formed is thicker than the periphery thereof. The contact area is increased, and each terminal 11 can be stably fixed to the insulating substrate 10.

  According to the electrical connection board 20a of this embodiment and the electrical connection box 30 including the same, since the plurality of insulated wires 12 are welded to at least one of the plurality of terminals 11, the insulated wires for power supply are used. On the other hand, wiring connection and branching can be performed.

  According to the electrical connection board 20a and the electrical connection box 30 including the same according to the present embodiment, a molding resin in which a connection portion between each terminal 11 and the insulated wire 12 is provided between the lower case 22 and the insulated wire 10 is provided. 13, the connection portion between each terminal 11 and the insulated wire 12, and the corrosion of each terminal 12 are suppressed, and the connection portion between each terminal 11 and the insulated wire 12 is reinforced to reduce vibration, etc. The broken line of the connection part by external force can be suppressed.

<< Embodiment 2 of the Invention >>
FIG. 5 is a cross-sectional view of the electrical connection board 20b constituting the electrical connection box of the present embodiment, and FIG. 6 is a circuit diagram of the electrical connection board 20b. In addition, in each following embodiment, the same code | symbol is attached | subjected about the same part as FIGS. 1-4, and the detailed description is abbreviate | omitted.

  In the electrical connection box of the present embodiment, the electrical connection board 20b is used instead of the electrical connection board 20a of the first embodiment, and other configurations are substantially the same as the configuration of the electrical connection box 30 of the first embodiment. It has become.

  Specifically, in the electrical connection board 20b, as shown in FIGS. 5 and 6, the circuit pattern for connecting the terminals connects the terminals 11a, 11b, and 11c to each other, and connects the terminals 11d, 11e, and 11f to each other. Is configured to do. Here, the electrical connection board 20b can be produced simply by changing the connection position, for example, by changing the program of the welding apparatus.

  According to the electrical connection board 20b of this embodiment and the electrical connection box including the same, as in the first embodiment, the plurality of terminals 11 press-fitted into the insulation board 10 are insulated with conductors 12a formed of a single wire. Since it connects via the electric wire 12, manufacturing cost can be reduced and the freedom degree of the connection between terminals can be improved.

<< Embodiment 3 of the Invention >>
FIG. 7 is a cross-sectional view of the electrical connection board 20c constituting the electrical connection box of the present embodiment.

  In the electrical connection boards 20a and 20b of the first and second embodiments, each terminal 11 is connected on the lower case (22) side. However, in the electrical connection board 20c of the present embodiment, each terminal 11 is connected to the upper case ( 21) and the lower case (22) side are connected.

  Specifically, in the electrical connection board 20c, as shown in FIG. 7, the circuit pattern on the upper case (21) side for connecting the terminals is configured to connect the terminals 11f, 11g, and 11h to each other. The circuit pattern on the lower case (22) side for connecting the terminals connects the terminals 11a and 11c, connects the terminals 11e and 11i, connects the terminals 11d and 11j, and connects the terminals 11b and 11k. It is configured to be connected to each other.

  According to the electrical connection board 20c and the electrical connection box including the same according to the present embodiment, as in the first and second embodiments, the plurality of terminals 11 press-fitted into the insulating board 10 are configured by the conductor 12a being a single wire. Since it is connected via the insulated wire 12, the manufacturing cost can be reduced, the degree of freedom of connection between the terminals can be improved, and the plurality of terminals 11 are connected to the upper case (21) of the insulating substrate 10. Since both the side and the lower case (22) side are connected via the welded single wire insulated wires 12, a relatively complicated circuit is formed in a limited space inside the electric junction box. can do.

<< Embodiment 4 of the Invention >>
8, 9 and 10 are sectional views of the electrical connection boards 20d, 20e and 20f constituting the electrical connection box of the present embodiment.

  The electrical connection boards 20a, 20b, and 20c in the first, second, and third embodiments have one insulating board 10. However, in the electrical connection boards 20d, 20e, and 20f in the present embodiment, two insulation boards are used. It has the board | substrates 10a and 10b, and a terminal protrudes (exposes) to the up-down both directions of an electrical-connection box, and becomes a structure which fits with a counterpart member (connector, fuse, relay).

  Specifically, as shown in FIG. 8, the electrical connection board 20 d is arranged so as to face the insulating board 10 a and the resin-made insulating board 10 a in which a plurality of terminal holding holes Ha are formed, and the plurality of terminal holding holes Hb. The other insulating substrate 10b made of resin, a plurality of terminals 11 (11aa to 11af) press-fitted into the terminal holding holes Ha of the insulating substrate 10a, and the terminal holding holes Hb of the insulating substrate 10b, respectively. At least two of the plurality of other terminals 11 (11ba to 11bf) press-fitted and the plurality of terminals 11 (11aa to 11af) are connected to the lower case (22) side of the insulating substrate 10a, and the other terminals 11 ( 11ba-11bf) are provided with a plurality of insulated wires 12 for connecting to each other on the upper case (21) side of the insulating substrate 10b. In the electrical connection board 20d, the circuit pattern for connecting the terminals between the insulating boards 10a and 10b connects the terminals 11aa and 11ab to each other and the terminals 11ae and 11af to each other as shown in FIG. The terminals 11ba and 11bb are connected to each other, the terminals 11be and 11bf are connected to each other, the terminals 11ab, 11bc and 11bd are connected to each other, and the terminals 11bb, 11ac and 11ad are connected to each other. Here, in the electrical connection substrate 20d, as shown in FIG. 8, the plurality of terminals 11aa to 11af press-fitted into the insulating substrate 10a and the plurality of terminals 11ba to 11bf press-fitted into the insulating substrate 10b do not overlap. Each terminal 11 is arranged.

  Further, in the electrical connection board 20e, as shown in FIG. 9, the insulating substrates 10a and 10b are separated from the electrical connection board 20d, and a plurality of terminals 11aa to 11af press-fitted into the insulation board 10a and the insulation board 10b are provided. Each terminal 11 is disposed so that the plurality of press-fitted terminals 11ba to 11bf overlap each other, and the other configuration is similar to that of the electrical connection board 20d. In the electrical connection board 20e, the circuit pattern for connecting the terminals between the insulating boards 10a and 10b connects the terminals 11aa and 11ab to each other and the terminals 11ab and 11ac to each other as shown in FIG. The terminals 11ac and 11ad are connected to each other, the terminals 11ae and 11af are connected to each other, the terminals 11ba and 11bb are connected to each other, the terminals 11bb and 11bc are connected to each other, the terminals 11bc and 11bd are connected to each other, and the terminals 11be and 11bf are connected to each other.

  Further, in the electrical connection substrate 20f, as shown in FIG. 10, the insulating substrates 10a and 10b are laminated in an insulating state, and a circuit pattern for connecting the terminals is formed on the upper case (21) side of the insulating substrate 10a. The terminals 11aa and 11ab are connected to each other, the terminals 11ab and 11ac are connected to each other, the terminals 11ac and 11ad are connected to each other, the terminals 11ae and 11af are connected to each other, and the terminals on the lower case (22) side of the insulating substrate 10b 11ba and 11bb are connected to each other, terminals 11bb and 11bc are connected to each other, terminals 11bc and 11bd are connected to each other, and terminals 11be and 11bf are connected to each other.

  In the electrical connection box including the electrical connection boards 20d to 20f of the present embodiment, the plurality of terminals 11aa to 11af are provided so as to be exposed from the upper case (21), and the plurality of other terminals 11ba to 11ba are provided. 11bf is provided so as to be exposed from the lower case (22).

  According to the electrical connection boards 20d to 20f of the present embodiment and the electrical connection box including the same, the plurality of terminals 11 press-fitted into the insulating boards 10a and 10b are the conductors 12a as in the first to third embodiments. Since it is connected via the insulated wire 12 composed of a single wire, the manufacturing cost can be reduced and the degree of freedom of connection between the terminals can be improved.

  Further, according to the electrical connection board 20d of the present embodiment and the electrical connection box including the same, the terminals 11aa to 11af press-fitted into the insulating substrate 10a and the terminals 1baa to 11bf press-fitted into the insulating board 10b Since the distance is shorter than the electrical connection board 20e, the terminals 11aa to 11af exposed from the upper case (21) and the terminals 11ba to 11bf exposed from the lower case (22) can be easily connected. Since the distance between the insulating substrates 10a and 10b is narrower than that of the electrical connection substrate 20e, the size of the electrical connection box can be reduced.

  In addition, according to the electrical connection board 20e and the electrical connection box including the same according to the present embodiment, the distance between the insulation boards 10a and 10b is wider than the electrical connection board 20d. Circuit patterns for connecting the terminals 11aa to 11af and the insulated wires 12 welded thereto, and the terminals 1baa to 11bf press-fitted to the insulated substrate 10b and the insulated wires 12 welded thereto so as not to interfere with each other. Can be configured.

  Further, according to the electrical connection board 20f of the present embodiment and the electrical connection box including the electrical connection board 20f, the circuit pattern for connecting the terminals is not provided between the insulation boards 10a and 10b. The space 10b can be narrowed, and space saving can be realized as compared with the electrical connection board 20e.

<< Embodiment 5 of the Invention >>
FIG. 11 is a cross-sectional view of an electrical connection board 20g constituting the electrical connection box of the present embodiment.

  In the electrical connection boards 20d, 20e and 20f of the fourth embodiment, the two insulating boards 10a and 10b are used to expose the terminals 11aa to 11af exposed from the upper case (21) and the lower case (22). Although both the terminals 11ba to 11bf are arranged, in the electrical connection board 20g of the present embodiment, the terminal 11aa to 11af exposed from the upper case (21) and the lower case using the single insulating board 10c. Both terminals 11ba to 11bf exposed from (22) are arranged.

  Specifically, as shown in FIG. 11, the electrical connection board 20g was press-fitted into the resin-made insulating board 10c in which a plurality of terminal holding holes Ha and Hb were formed and the terminal holding holes Ha of the insulating board 10c. Insulate at least two of the plurality of terminals 11 (11aa to 11af), the plurality of other terminals 11 (11ba to 11bf) press-fitted into the respective terminal holding holes Hb of the insulating substrate 10c, and the plurality of terminals 11aa to 11af. A plurality of insulated wires 12 are provided for connecting at least two of the lower case (22) side of the substrate 10c and the plurality of terminals 11ba to 11bf on the upper case (21) side of the insulating substrate 10c. . In the electrical connection board 20g, as shown in FIG. 11, the circuit pattern for connecting the terminals connects the terminals 11ba, 11bb, 11bc and 11bd to each other on the upper case (21) side, and the terminals 11be and 11b and 11bf are connected to each other, and on the lower case (22) side, the terminals 11aa, 11ab, 11ac and 11ad are connected to each other, and the terminals 11ae and 11af are connected to each other.

  According to the electrical connection board 20g of this embodiment and the electrical connection box including the same, the plurality of terminals 11 press-fitted into the insulating board 10c are configured by the conductor 12a as a single wire as in the first to fourth embodiments. Since it is connected via the single insulated wire 12, the manufacturing cost can be reduced, the degree of freedom of connection between the terminals can be improved, and the terminals 11aa to 11af exposed from the upper case (21), Even when both of the terminals 11ba to 11bf exposed from the lower case (22) are arranged, only one insulating substrate 10c is required, so that the electrical junction box can be reduced in weight.

  As described above, the present invention is useful for an electrical system of a vehicle such as an automobile because the manufacturing cost can be reduced and the degree of freedom of connection between terminals can be improved in the electrical junction box.

FIG. 3 is an exploded perspective view of the electrical junction box 30 according to the first embodiment. 4 is a cross-sectional view of an electrical connection board 20a constituting the electrical connection box 30. FIG. It is a circuit diagram of the electrical connection board 20a. It is the top view which showed typically the other structural example of the lower surface side of the electrical connection board | substrate 20a. It is sectional drawing of the electrical connection board | substrate 20b which comprises the electrical junction box which concerns on Embodiment 2. FIG. It is a circuit diagram of the electrical connection board 20b. It is sectional drawing of the electrical connection board | substrate 20c which comprises the electrical junction box which concerns on Embodiment 3. FIG. It is sectional drawing of the electrical connection board | substrate 20d which comprises the electrical junction box which concerns on Embodiment 4. FIG. It is sectional drawing of the electrical connection board | substrate 20e which comprises the electrical connection box which concerns on Embodiment 4. FIG. It is sectional drawing of the electrical connection board | substrate 20f which comprises the electrical junction box which concerns on Embodiment 4. FIG. It is sectional drawing of the electrical connection board | substrate 20g which comprises the electrical junction box which concerns on Embodiment 5. FIG.

H, Ha, Hb Terminal holding hole 10, 10a-10c insulating substrate)
11 Terminal 12 Insulated wire 12a Conductor 13 Mold resin 20a-20g Electrical connection board 21 Upper case (first housing member)
22 Lower case (second housing member)
30 Electrical junction box

Claims (4)

A first housing member;
A second housing member provided so as to fit into the first housing member;
An electrical junction box comprising an insulating substrate fixed between the first housing member and the second housing member and provided with a plurality of terminals so as to be exposed from the first housing member, respectively. ,
An electrical junction box, wherein at least two of the plurality of terminals are connected via an insulated wire having a single conductor. In the electrical junction box according to claim 1,
An electrical junction box, wherein a plurality of the insulated wires are connected to at least one of the plurality of terminals. In the electrical junction box according to claim 1 or 2,
At least two of the plurality of terminals are connected on the second casing member side of the insulating substrate. In the electric junction box according to any one of claims 1 to 3,
The electrical connection box, wherein a connection portion between each terminal and the insulated wire is covered with a mold resin.

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