JP7719699B2 - Wire harness - Google Patents

Description

The present invention relates to a wire harness.

Conventionally, vehicles are equipped with an electrical junction box that electrically connects wires on a first connection object with wires on a second connection object within a housing, for example, by being interposed between a secondary battery and multiple power supply objects to distribute power to each of the power supply objects. An internal chamber of the housing houses an electrical connector that includes electrical components (circuit protection components, relay components, etc.) and conductive members, and electrically connects the wires via these components. This electrical connector includes a mating connector into which a connector at the end of the wire is mated. The electrical junction box, together with the wires, constitutes a wire harness. For example, Patent Document 1 below discloses this type of wire harness.

JP 2014-93888 A

In electrical junction boxes, the combination of a mating connector and its mating connector to be mated is predetermined. Furthermore, electrical junction boxes may use multiple connectors that are identical or similar in appearance and difficult to distinguish from one another. In such cases, measures are needed to prevent the incorrect connection of a connector to the wrong mating connector.

The present invention therefore aims to provide a wire harness that can prevent incorrect connector connection.

The present invention provides an electrical connection box that includes a plurality of groups of connector-attached electric wires, each group having a plurality of connector-attached electric wires with connectors connected to the ends of the electric wires, and that includes a mating connector for each of the connectors to which the connectors in the plurality of groups of connector-attached electric wires are mated. The electrical connection box includes a housing that has a storage chamber into which the plurality of groups of connector-attached electric wires are drawn in from the outside, and an electrical connecting device that includes, for each group of connector-attached electric wires, a mating connector group that is housed in the storage chamber and that combines the mating connectors provided for each of the connectors in the groups of connector-attached electric wires. The groups of connector-attached electric wires include a wire holder that bundles each of the electric wires and secures them to a fixed portion of the electrical connecting device. The electrical connecting device arranges the combinations of the mating connector group and the fixed portion, which are provided corresponding to each of the connectors and wire holders in the groups of connector-attached electric wires, side by side for each group of connector-attached electric wires.

In the wire harness of the present invention, the wire holder can be assembled to the fixed portion for each group of connector-attached wires. For a group of connector-attached wires, the wire holder is first assembled to the fixed portion, and each connector ahead of the wire holder can be mated and connected to its respective mating connector. Therefore, in this wire harness, the assembly of such groups of connector-attached wires can be performed from the end in the order of the multiple fixed portions. Therefore, in this wire harness, for each group of mating connectors, the mating connectors arranged next to the wire holder assembled to the fixed portion can be targeted, and each connector ahead of the wire holder can be mated and connected to its respective mating connector in the mating connector group. Therefore, this wire harness can prevent incorrect connection of groups of connector-attached wires to electrical connecting devices, improving the ease of assembly.

FIG. 1 is a perspective view showing an electrical junction box according to an embodiment. FIG. 2 is a cross-sectional view taken along line XX of FIG. FIG. 3 is a perspective view showing the electrical junction box of the embodiment with the cover removed. FIG. 4 is a perspective view of the case body as seen from the opening side. FIG. 5 is a perspective view of the electrical connecting device together with the electric wires and the like, as viewed from the top side. FIG. 6 is a perspective view of the electrical connecting device together with the electric wires and the like, as viewed from the bottom side. FIG. 7 is a plan view of the electrical connecting device together with the electric wires and the like, as viewed from the bottom side. FIG. 8 is a perspective view showing the electrical connecting device with the cover member removed. FIG. 9 is an exploded perspective view showing the internal structure of the electrical connecting device together with the bottom connector.

Below, an embodiment of a wire harness according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[Embodiment]
One embodiment of a wire harness according to the present invention will be described with reference to FIGS. 1 to 9. FIG.

The reference numeral 1 in Figures 1 to 3 indicates the electrical junction box of this embodiment. Furthermore, the reference numeral WH in Figures 1 to 3 indicates the wire harness of this embodiment equipped with the electrical junction box 1.

The electrical junction box 1 is placed between a first connection object (not shown) and a second connection object (not shown), and pulls in the electrical wires of the first and second connection objects to form an electrical connection (Figs. 1 to 3). Together with the electrical wires, the electrical junction box 1 forms a wire harness WH. The electrical junction box 1 and wire harness WH illustrated here are mounted on vehicles such as electric vehicles and hybrid vehicles, and distribute power to the power distribution objects by electrically connecting a secondary battery as the first connection object and a power distribution object as the second connection object (e.g., an auxiliary device to be powered).

In this wire harness WH, shielded wires are used for each of the wires to prevent external noise from entering. Although not shown, each wire comprises a cylindrical conductive core wire, a cylindrical insulating inner coating (inner sheath) that concentrically surrounds the core wire, a cylindrical conductive braided body that concentrically surrounds the inner coating, and a cylindrical insulating outer coating (outer sheath) that concentrically surrounds the braided body.

The wire harness WH includes a plurality of connector-equipped electric wires, each having a connector connected to the end of the electric wire on the first object to be connected, and a plurality of connector-equipped electric wires, each having a connector connected to the end of the electric wire on the second object to be connected. The wire harness WH also includes one group of connector-equipped electric wires (hereinafter referred to as the "first group of connector-equipped electric wires") including a plurality of connector-equipped electric wires on the first object to be connected, and a plurality of groups of connector-equipped electric wires (hereinafter referred to as the "second group of connector-equipped electric wires") including a plurality of connector-equipped electric wires on the second object to be connected.

The electrical junction box 1 includes a metal housing 10 (Figs. 1 to 4). The electrical junction box 1 also includes a conductive electrical connector 20 inside the housing 10 that electrically connects a connector-equipped electric wire on the first connection object side to a connector-equipped electric wire on the second connection object side (Figs. 2, 3, and 5 to 8). The electrical junction box 1 also includes a terminal fitting 30 that dissipates noise carried on the braid of the electric wire on the second connection object side (Figs. 2, 3, and 5 to 7). Additionally, this electrical connection box 1 is provided with a wire insertion section (second wire insertion section, described below) 16 through which the wire on the second connection object side is inserted from the inside to the outside of the housing 10. As a waterproof and dustproof measure for the housing 10's accommodation chamber 10a, a waterproof and dustproof member 40 is provided that prevents liquid and dust from entering the accommodation chamber 10a from outside the housing 10 via the second wire insertion section 16 (FIGS. 1 to 3 and 5 to 7).

In the wire harness WH, each connector of one first group of electrical wires with connectors (hereinafter referred to as the "opening-side connector") is mated with the electrical connector 20 at the opening at one end of the housing 10 (the access opening 10b, described below), and each connector of multiple second groups of electrical wires with connectors (hereinafter referred to as the "bottom-side connector") is mated with the electrical connector 20 at the bottom wall 12, described below, at the other end of the housing 10. As will be described in detail later, the electrical connector 20 includes a mating connector (hereinafter referred to as the "mating opening-side connector") for each opening-side connector of one first group of electrical wires with connectors. This electrical connector 20 includes one mating connector group (hereinafter referred to as the "first mating connector group") that combines the mating opening-side connectors provided for each opening-side connector of that one first group of electrical wires with connectors. Furthermore, as will be described in detail later, this electrical connecting device 20 is provided with a mating connector (hereinafter referred to as a "mating bottom connector") for each bottom connector of the plurality of second connector-attached electric wire groups into which the bottom connectors of each of the plurality of second connector-attached electric wire groups are mated. This electrical connecting device 20 is provided with a mating connector group (hereinafter referred to as a "second mating connector group") for each second connector-attached electric wire group, which is a combination of the mating bottom connectors provided for each of the plurality of second connector-attached electric wire groups.

The first group of connector-equipped electric wires shown here includes two connector-equipped electric wires. One of the connector-equipped electric wires is the electric wire on the first connection object side. It includes a first electric wire (hereinafter referred to as the "first opening-side electric wire") Wo1 that is electrically connected to the electrical connecting device 20 at the opening at one end of the housing 10 (the access opening 10b described below) and a first connector (hereinafter referred to as the "first opening-side connector") 51A that is physically and electrically connected to one end of the first opening-side electric wire Wo1 (Figure 3). The other connector-equipped electric wire is the electric wire on the first connection object side. It includes a second electric wire (hereinafter referred to as the "second opening-side electric wire") Wo2 that is electrically connected to the electrical connecting device 20 at the opening at one end of the housing 10 (the access opening 10b described below) and a second connector (hereinafter referred to as the "second opening-side connector") 51B that is physically and electrically connected to one end of the second opening-side electric wire Wo2 (Figure 3). In the first connector-equipped wire group illustrated here, one of the first opening-side wire Wo1 and the second opening-side wire Wo2 is a positive electrode wire, and the other is a negative electrode wire. The first opening-side wire Wo1 and the second opening-side wire Wo2 are electrically connected to a secondary battery as the first connection object. Although not shown here, the other ends of the first opening-side wire Wo1 and the second opening-side wire Wo2 are provided with connectors that electrically connect them to the first connection object.

In the electrical junction box 1, the first opening-side wires Wo1 and the second opening-side wires Wo2 of the first connector-attached wire group are pulled into the housing 10 from the outside, along with the first opening-side connector 51A and the second opening-side connector 51B. In this electrical junction box 1, the first opening-side connector 51A and the second opening-side connector 51B are mated and connected to the first mating opening-side connector 28a and the second mating opening-side connector 28b (described below) of the electrical connector 20, respectively, at the opening at one end of the housing 10 (the access opening 10b, described below).

The second group of connector-equipped electric wires shown here includes two connector-equipped electric wires. One of the connector-equipped electric wires is the electric wire on the second connection object side and includes a first electric wire (hereinafter referred to as the "first bottom-side electric wire") Wb1 that is electrically connected to an electric connecting device 20 on the bottom wall 12 side (described later) of the other end of the housing 10, and a first connector (hereinafter referred to as the "first bottom-side connector") 52A that is physically and electrically connected to one end of the first bottom-side electric wire Wb1 (Figures 2, 6, and 7). The other connector-attached electric wire is an electric wire on the second connection object side, and includes a second electric wire (hereinafter referred to as the "second bottom-side electric wire") Wb2 that is electrically connected to the electric connecting device 20 on the side of the bottom wall 12 (described later) at the other end of the housing 10, and a second connector (hereinafter referred to as the "second bottom-side connector") 52B that is physically and electrically connected to one end of the second bottom-side electric wire Wb2 (FIGS. 2, 6, and 7). In the second connector-attached electric wire group exemplified here, one of the first bottom-side electric wire Wb1 and the second bottom-side electric wire Wb2 is a positive electrode electric wire and the other is a negative electrode electric wire, and the first bottom-side electric wire Wb1 and the second bottom-side electric wire Wb2 are electrically connected to a power distribution object as a second connection object. In other words, the second connector-attached wire group includes a first bottom-side wire Wb1 (either positive or negative) and a second bottom-side wire Wb2 (either positive or negative) in the same circuit. Although not shown here, the other ends of the first bottom-side wire Wb1 and the second bottom-side wire Wb2 are provided with connectors that electrically connect them to the second connection object.

In the electrical junction box 1, the first bottom-side wires Wb1 and the second bottom-side wires Wb2 of the second connector-attached wire group are pulled into the housing 10 from the outside, along with the first bottom-side connector 52A and the second bottom-side connector 52B. In this electrical junction box 1, the first bottom-side connector 52A and the second bottom-side connector 52B are mated and connected to the first mating bottom-side connector 27a and the second mating bottom-side connector 27b of the electrical connector 20, respectively, on the bottom wall 12 side of the other end of the housing 10, which will be described later.

The wire harness WH shown here has seven such groups of wires with second connectors.

The housing 10 is made of a metal material such as aluminum or an aluminum alloy and is fixed to a conductive vehicle body (not shown). The housing 10 has a storage chamber 10a into which one group of electric wires with a first connector and multiple groups of electric wires with a second connector are drawn from the outside (Figures 2 to 4). The housing 10 also has an access opening 10b for inserting and assembling components to be placed in the storage chamber 10a (Figures 3 and 4).

The electrical connector 20, one group of electric wires with a first connector, and multiple groups of electric wires with a second connector are inserted into the storage chamber 10a through the access opening 10b. Within the storage chamber 10a, the electrical connector 20 electrically connects the first opening-side electric wires Wo1 and the second opening-side electric wires Wo2 of the first group of electric wires with a connector to the first bottom-side electric wires Wb1 and the second bottom-side electric wires Wb2 of each of the multiple groups of electric wires with a second connector.

The housing 10 shown here comprises a metal case body 10A and a metal cover 10B (Figs. 1 and 2). This housing 10 is fixed to the vehicle body with the access opening 10b facing upward. For example, here, the case body 10A is fixed to the floor panel of the vehicle body with screws.

The case body 10A has a cylindrical outer wall 11 (Figs. 1 to 4). In this case body 10A, the internal space surrounded by the outer wall 11 is used as the storage chamber 10a, and the inner opening of the annular end of the outer wall 11 in the axial direction is used as the access opening 10b. The cover 10B is attached to the annular end face of the annular end at one end to close the opening at that end (access opening 10b). The outer wall 11 shown here has a flat surface that is flush with the annular end face at that end, and has a flange portion 11a that protrudes outward in an annular shape from the annular end at that end (Figs. 2 to 4). The cover 10B is attached to this flange portion 11a.

The case body 10A has a cylindrical outer wall 11 with one open end, the other opening of which is closed by a bottom wall 12 (Figs. 1 to 4). Therefore, in this case body 10A, a storage chamber 10a is formed that is enclosed by both the outer wall 11 and the bottom wall 12 and is connected to the working opening 10b at one end of the outer wall 11.

In this case body 10A, the electrical connector 20 is inserted into the storage chamber 10a through an opening at one end (access opening 10b), and the electrical connector 20 housed in this storage chamber 10a is then fixed in place with screws through the access opening 10b.

The electrical connecting device 20 is interposed between the first opening-side connector 51A at the end of the first opening-side wire Wo1 and the first bottom-side connector 52A at the end of the first bottom-side wire Wb1, thereby indirectly electrically connecting the first opening-side wire Wo1 and the first bottom-side wire Wb1. The electrical connecting device 20 is also interposed between the second opening-side connector 51B at the end of the second opening-side wire Wo2 and the second bottom-side connector 52B at the end of the second bottom-side wire Wb2, thereby indirectly electrically connecting the second opening-side wire Wo2 and the second bottom-side wire Wb2.

This electrical connecting device 20 includes a first mating connector group located in the accommodation chamber 10a on the side of the opening (access opening 10b) at one end of the housing 10. The first mating connector group shown here includes a first mating opening connector 28a that mate-connects the first opening connector 51A of the first connector-attached wire group, and a second mating opening connector 28b that mate-connects the second opening connector 51B of the first connector-attached wire group (FIGS. 2, 5, and 6). The first mating opening connector 28a includes a first terminal portion (hereinafter referred to as the "first opening terminal portion") 22b to which the first opening wire Wo1 is electrically connected via the first opening connector 51A (FIGS. 8 and 9). The second mating opening connector 28b also has a second terminal portion (hereinafter referred to as the "second opening terminal portion") 26b to which the second opening wire Wo2 is electrically connected via the second opening connector 51B (Figures 8 and 9).

Furthermore, this electrical connecting device 20 includes a plurality of second mating connector groups arranged within the accommodation chamber 10a on the bottom wall 12 side of the other end of the housing 10. The second mating connector group shown here includes a first mating bottom connector 27a that matingly connects the first bottom connector 52A of the second connector-attached wire group, and a second mating bottom connector 27b that matingly connects the second bottom connector 52B of the second connector-attached wire group (FIGS. 2, 6, and 7). The first mating bottom connector 27a includes a first terminal portion (hereinafter referred to as the "first bottom terminal portion") 25b to which the first bottom-side wire Wb1 is electrically connected via the first bottom connector 52A (FIG. 9). The second mating bottom-side connector 27b also includes second terminals 26c (hereinafter referred to as "second bottom-side terminals") to which the second bottom-side wires Wb2 are electrically connected via the second bottom-side connector 52B (Figure 9). Such second mating connector groups are provided for each second connector-attached wire group.

Furthermore, this electrical connecting device 20 includes an electrically insulating member (conductor holding member 27 and cover member 28, described below) that holds the first opening-side terminal portion 22b of the first mating opening-side connector 28a so that it can be mated with the first opening-side connector 51A, and that holds the second opening-side terminal portion 26b of the second mating opening-side connector 28b so that it can be mated with the second opening-side connector 51B. This insulating member also holds the first bottom-side terminal portion 25b of the first mating bottom-side connector 27a so that it can be mated with the first bottom-side connector 52A, and holds the second bottom-side terminal portion 26c of the second mating bottom-side connector 27b so that it can be mated with the second bottom-side connector 52B.

In this electrical connecting device 20, each first mating bottom-side connector 27a and each second mating bottom-side connector 27b are arranged so that the mating connection directions of the first bottom-side connector 52A and the second bottom-side connector 52B are all the same (FIGS. 6 and 7). Each first mating bottom-side connector 27a and each second mating bottom-side connector 27b are arranged side by side in the same arrangement direction (hereinafter referred to as the "mating connector arrangement direction") (FIGS. 6 and 7). Furthermore, in this electrical connecting device 20, as previously described, each first mating bottom-side connector 27a and each second mating bottom-side connector 27b are combined as a second mating connector group (FIGS. 6 and 7). In each second mating connector group, a pair of a first mating bottom-side connector 27a and a second mating bottom-side connector 27b are arranged in a direction perpendicular to the mating connector arrangement direction for each second mating connector group.

Specifically, the electrical connecting device 20 shown here includes an electrical component 21 interposed between the first opening-side terminal 22b and the first bottom-side terminal 25b (i.e., between the first opening-side wire Wo1 and the first bottom-side wire Wb1) (FIGS. 8 and 9). This electrical component 21 includes a first terminal 21a electrically connected to the first opening-side terminal 22b and a second terminal 21b electrically connected to the first bottom-side terminal 25b. Here, a fuse provided with a fuse body 21c is shown as an example of the electrical component 21. The electrical connecting device 20 includes the same number of electrical components 21 as the second group of electrical wires with connectors (second group of mating connectors). Furthermore, in this electrical connecting device 20, the electrical components 21 are arranged side by side in the direction of the mating connector arrangement.

This electrical connecting device 20 includes a conductive member (hereinafter referred to as the "first conductive member") 22 that indirectly electrically connects the first opening-side wire Wo1 to each electrical component 21, thereby indirectly electrically connecting the first opening-side wire Wo1 to the first bottom-side wire Wb1 of each second connector-attached wire group (FIGS. 8 and 9). This first conductive member 22 is a so-called bus bar formed into a predetermined shape using, for example, a metal plate as a base material. This first conductive member 22 has a main body 22a that electrically connects the first terminal portion 21a of each electrical component 21, and the aforementioned first opening-side terminal portion 22b (FIGS. 8 and 9).

The main body 22a shown here is formed in a rectangular, flat plate shape (Figure 9). In the electrical connecting device 20, the first conductive member 22 is positioned so that the longitudinal direction of the main body 22a is aligned with the mating connector arrangement direction. The main body 22a has the same number of circular through holes 22c formed at equal intervals along its longitudinal direction as the electrical components 21. The electrical components 21 have circular through holes 21d in their first terminal portions 21a that are coaxial with the through holes 22c in the main body 22a. Male screw members 23A are inserted through the respective through holes 21d, 22c, and female screw members 24A are threadedly engaged with the female screw members 24A, thereby screwing the first terminal portions 21a to the main body 22a (Figures 8 and 9). Here, the first conductive member 22 is integrated with a conductor holding member 27 (described later), with one flat surface of the main body 22a exposed. Here, the male screw member 23A for each electrical component 21 is inserted into the through hole 22c of the main body 22a and attached to the conductor holding member 27 like a stud bolt. The first terminal portion 21a is placed on the exposed surface of the main body 22a with its male screw member 23A inserted into the through hole 21d, and is fixed to the main body 22a with screws.

The first opening side terminal portion 22b is a terminal portion that extends perpendicularly from the plane of the main body 22a (Figure 9). This first opening side terminal portion 22b protrudes from the conductor holding member 27 while being integral with the conductor holding member 27. The first opening side terminal portion 22b shown here is located at one longitudinal end of the main body 22a and protrudes within the accommodating chamber 10a along the cylindrical axis of the outer wall 11 and toward the working opening 10b. The first opening side terminal portion 22b shown here is formed in a so-called male tab shape. The first opening side connector 51A is configured as a female connector and is inserted into the accommodating chamber 10a from the working opening 10b side together with the first opening side wire Wo1 and mated with the first mating opening side connector 28a.

Furthermore, the electrical connecting device 20 electrically connects the second terminal 21b of the electrical component 21 to the first bottom-side electrical wire Wb1. The electrical connecting device 20 includes a conductive member (hereinafter referred to as the "second conductive member") 25 that is interposed between the second terminal 21b and the first bottom-side electrical wire Wb1 to indirectly electrically connect the second terminal 21b and the first bottom-side electrical wire Wb1 (FIGS. 8 and 9). The second conductive member 25 is a so-called bus bar formed into a predetermined shape using, for example, a metal plate as the base material. The second conductive member 25 includes a main body 25a that electrically connects the second terminal 21b of the electrical component 21 and the first bottom-side terminal 25b (FIG. 9). The electrical connecting device 20 includes a second conductive member 25 for each electrical component 21. Furthermore, in the electrical connecting device 20, the electrical components 21 are arranged side by side in the direction of the mating connector arrangement.

The main body 25a shown here is formed as a flat, plate-like piece (Figure 9). A circular through-hole 25c is formed in the main body 25a. The electrical component 21 has a circular through-hole 21d in its second terminal portion 21b, which is coaxial with the through-hole 25c in the main body 25a. The second terminal portion 21b is fixed to the main body 25a by threading a male screw member 23B inserted through each through-hole 21d, 25c with a female screw member 24B (Figures 8 and 9). The second conductive members 25 for each electrical component 21 are arranged at the same intervals as the respective through-holes 22c of the first conductive member 22 and in the same direction as the respective through-holes 22c (i.e., the mating connector arrangement direction) (Figure 9). Here, each second conductive member 25 is integrated with a conductor holding member 27 (described later), with one flat surface of the main body 25a exposed. Here, a male screw member 23B inserted into the through hole 25c of the main body 25a is attached to the conductor holding member 27 like a stud bolt. The second terminal portion 21b is placed on the exposed surface of the main body 25a with the male screw member 23B inserted into the through hole 21d, and is then screwed to the main body 25a.

The first bottom-side terminal portion 25b is a terminal portion that extends perpendicularly from the plane of the main body 25a (Figure 9). This first bottom-side terminal portion 25b is integral with the conductor holding member 27 and protrudes from the main body 25a in the opposite direction to the first opening-side terminal portion 22b. In other words, the first bottom-side terminal portion 25b shown here protrudes along the cylindrical axis of the outer wall 11 and toward the bottom wall 12 within the accommodating chamber 10a. The first bottom-side terminal portion 25b shown here is formed in a so-called male tab shape. The first bottom-side connector 52A is configured as a female connector and is mated and connected to the first mating bottom-side connector 27a before the electrical connecting device 20 is accommodated in the accommodating chamber 10a.

Furthermore, this electrical connecting device 20 includes a conductive member (hereinafter referred to as the "third conductive member") 26 that indirectly electrically connects the second opening-side wires Wo2 to the second bottom-side wires Wb2 of each second connector-equipped wire group (FIGS. 8 and 9). This third conductive member 26 is a so-called bus bar formed into a predetermined shape using, for example, a metal plate as the base material. This third conductive member 26 has a main body 26a, a second opening-side terminal portion 26b, and a second bottom-side terminal portion 26c for each second connector-equipped wire group (FIG. 9).

The main body 26a shown here is formed as an L-shaped flat plate (FIG. 9). The main body 26a is roughly divided into a rectangular long piece _26a1 and a rectangular short piece _26a2 . The longitudinal direction of the long piece _26a1 is oriented in the arrangement direction of the respective electrical components 21 and second conductive members ₂₅ (i.e., the mating connector arrangement direction), and the long piece 26a1 is arranged adjacent to each second conductive member 25 in a direction perpendicular to the mating connector arrangement direction. Here, as described below, the third conductive member 26 is integrated with a conductor holding member 27, described below, with one flat surface of the main body 26a exposed.

The second opening-side terminal portion 26b is a terminal portion extending downward from the short piece portion _26a2 of the main body 26a relative to the plane of the main body 26a (FIG. 9). The second opening-side terminal portion 26b is integral with the conductor holding member 27 and protrudes from the conductor holding member 27 in the same direction as the first opening-side terminal portion 22b. That is, the second opening-side terminal portion 26b shown here protrudes along the cylindrical axis of the outer peripheral wall 11 and toward the access opening 10b within the accommodation chamber 10a. The second opening-side terminal portion 26b shown here has the same male tab shape as the first opening-side terminal portion 22b. The second opening-side connector 51B is configured as a female connector and is inserted into the accommodation chamber 10a together with the second opening-side wire Wo2 from the access opening 10b side and mated with the second mating opening-side connector 28b.

The second bottom-side terminals 26c are terminals extending downward from the long piece _26a1 of the main body 26a relative to the plane thereof, and are provided one for each second conductive member 25 ( FIG. 9 ). The second bottom-side terminals 26c shown here are provided adjacent to the second conductive members ₂₅ on the long side of the long piece 26a1 on the second conductive member 25 side in a direction perpendicular to the mating connector arrangement direction, for each second conductive member 25. The second bottom-side terminals 26c are integral with the conductor holding member 27 and protrude from the long piece _26a1 of the main body 26a in the same direction as the first bottom-side terminals 25b. In other words, the second bottom-side terminals 26c shown here protrude along the cylindrical axis of the outer peripheral wall 11 and toward the bottom wall 12 within the accommodating chamber 10a. The second bottom-side terminals 26c shown here are formed in the same male tab shape as the first bottom-side terminals 25b. The second bottom connector 52B is configured as a female connector, and is mated and connected to the second mating bottom connector 27b before the electrical connecting device 20 is accommodated in the accommodation chamber 10a.

Furthermore, this electrical connecting device 20 includes a holding member (hereinafter referred to as the "conductor holding member") 27, which serves as the aforementioned insulating member and holds the first conductive member 22, the second conductive member 25, and the third conductive member 26, and is also responsible for screw-fastening them to the housing 10 (FIGS. 2 and 5 to 8). This conductor holding member 27 is molded from an insulating material such as synthetic resin. The conductor holding member 27 shown here is integrally molded with the first conductive member 22, the second conductive member 25, and the third conductive member 26 by insert molding. Here, the conductor holding member 27 is also integrally molded with the male screw members 23A and 23B by insert molding.

This conductor holding member 27 exposes the main body 22a of the first conductive member 22, the main body 25a of the second conductive member 25, and the main body 26a of the third conductive member 26 at the top surface 27U facing the access opening 10b, and the first opening side terminal portion 22b of the first conductive member 22 and the second opening side terminal portion 26b of the third conductive member 26 protrude from the top surface 27U toward the access opening 10b (Figure 8). Furthermore, this conductor holding member 27 has the male screw members 23A and 23B protrude from the top surface 27U toward the access opening 10b.

Furthermore, the conductor holding member 27 accommodates the first bottom-side terminal portion 25b of the second conductive member 25 and the second bottom-side terminal portion 26c of the third conductive member 26, which protrude in the opposite direction from the first opening-side terminal portion 22b and the second opening-side terminal portion 26b, on the bottom wall 12 side. In other words, the underside 27L of the conductor holding member 27 on the bottom wall 12 side accommodates the first bottom-side terminal portion 25b, and a housing portion of the first mating bottom-side connector 27a that matingly connects the first bottom-side connector 52A is formed for each first mating bottom-side connector 27a (Figure 6). The housing portion of the first mating bottom-side connector 27a shown here opens toward the bottom wall 12 in the accommodation chamber 10a and is shaped to allow the first bottom-side connector 52A to be fitted from the bottom wall 12 side toward the access opening 10b. Additionally, the underside 27L of the conductor holding member 27 has a housing portion for a second mating bottom connector 27b that houses the second bottom terminal portion 26c and into which the second bottom connector 52B is mated (FIG. 6). The housing portion of the second mating bottom connector 27b shown here opens toward the bottom wall 12 in the accommodation chamber 10a and is shaped to allow the second bottom connector 52B to be fitted from the bottom wall 12 toward the access opening 10b.

The electrical connecting device 20 further includes a cover member 28 as another insulating member. The cover member 28 is attached to the conductor holding member 27 and covers the electrical component 21, the main body 22a of the first conductive member 22, the main body 25a of the second conductive member 25, the main body 26a of the third conductive member 26, and the male screw members 23A and 23B from the access opening 10b side (see Figures 2, 3, 5, and 6). This cover member 28 is molded from an insulating material such as synthetic resin.

This cover member 28 houses the first opening side terminal portion 22b protruding from the top surface 27U of the conductor holding member 27, and is formed with a housing portion for the first mating opening side connector 28a into which the first opening side connector 51A is mated (Figure 5). The housing portion of the first mating opening side connector 28a shown here is formed so that it protrudes toward the access opening 10b in the accommodation chamber 10a and is shaped to allow the first opening side connector 51A to be fitted from the access opening 10b toward the bottom wall 12. This cover member 28 also houses the second opening side terminal portion 26b protruding from the top surface 27U of the conductor holding member 27, and is formed with a housing portion for the second mating opening side connector 28b into which the second opening side connector 51B is mated (Figure 5). The housing portion of the second mating opening connector 28b shown here protrudes toward the access opening 10b side of the accommodation chamber 10a, and is shaped so that the second opening connector 51B fits from the access opening 10b side toward the bottom wall 12.

In the case body 10A, the first connector-attached wire group is inserted through the access opening 10b into the storage chamber 10a housing the electrical connector 20. The first opening connector 51A at the end of the first opening wire Wo1 is mated with the first mating opening connector 28a of the electrical connector 20, and the second opening connector 51B at the end of the second opening wire Wo2 is mated with the second mating opening connector 28b of the electrical connector 20 (Figures 2, 3, and 5).

The case body 10A has an outer wall 11 cut out from the annular end face at one end facing the access opening 10b, forming a wire insertion portion (hereinafter referred to as the "first wire insertion portion") 13 through which the first opening side wire Wo1 and the second opening side wire Wo2 are inserted between the inside and outside of the housing 10 (in other words, the first opening side wire Wo1 and the second opening side wire Wo2 are pulled into the storage chamber 10a from outside the housing 10, or the first opening side wire Wo1 and the second opening side wire Wo2 are pulled out from the storage chamber 10a to the outside of the housing 10) (Figure 4). The first wire insertion portion 13 shown here is formed in a shape in which the flange portion 11a is also cut out along with the outer wall 11. The end face of this first wire insertion portion 13 on the access opening 10b side is used as an insertion port for inserting the first opening side wire Wo1 and the second opening side wire Wo2 into this first wire insertion portion 13. This first wire insertion portion 13 forms an opening whose insertion port is blocked by the cover 10B when the cover 10B is attached to the case body 10A. Here, this opening connects the inside and outside of the housing 10 and is used as an inlet or outlet for the first opening side wire Wo1 and the second opening side wire Wo2. Note that a first wire insertion portion 13 may be provided separately for the first opening side wire Wo1 and the second opening side wire Wo2.

The first opening side wire Wo1 and the second opening side wire Wo2 shown here are held together by a wire holder 55 made of, for example, synthetic resin, and are fixed to the housing 10 via this wire holder 55 (Figure 3). The wire holder 55 is placed inside the first wire insertion portion 13. This wire holder 55 is then fixed to the housing 10 by screwing it into the case main body 10A. An electric wire fixing portion 14 having a male screw member B1, such as a stud bolt, is provided in the storage chamber 10a of the case main body 10A, protruding from the inner wall surface 11b of the outer wall 11 (Figure 4). The electric wire holder 55 is fixed to the electric wire fixing portion 14 by screwing a female screw member (not shown) into the male screw member B1.

The electrical connecting device 20 has a conductor holding member 27 or a cover member 28 secured to a fixing portion 15 of the housing 10 in the accommodation chamber 10a by a screw member (male screw member or female screw member) ( FIG. 4 ). The fixing portion 15 protrudes from the inner wall surface 11b of the outer wall 11 of the case body 10A and has a plane facing the access opening 10b and parallel to the access opening 10b. The fixing portion 15 has a female screw portion N2 with a screw axis perpendicular to the plane ( FIG. 4 ). The conductor holding member 27 or the cover member 28 has a fixed portion 27c, which is a flat plate-like piece protruding from the outer surface and arranged in the accommodation chamber 10a with one plane facing the access opening 10b and the other plane facing the bottom wall 12 ( FIGS. 5 , 6 , and 8 ). The fixed portion 27c has a through-hole _27c1 through which a male screw member (not shown) can be inserted. The other flat surface of this fixed portion 27c is placed on the flat surface of the fixing portion 15 on the working opening 10b side, and the male screw member inserted into the through hole _27c1 is screwed into the female screw portion N2, thereby fixing the conductor holding member 27 or the cover member 28 to the case main body 10A inside the accommodation chamber 10a. Here, the fixed portion 27c is provided on the conductor holding member 27, and the conductor holding member 27 is fixed to the fixing portion 15 of the housing 10 by screwing.

This electrical junction box 1 is provided with multiple pairs (four pairs in this example) of fixing parts 15 and fixed parts 27c. Furthermore, in this electrical junction box 1, the fixing parts 15 may be provided with male screw members (not shown) such as stud bolts, and the fixing parts 15 and fixed parts 27c may be screwed together by threading a female screw member (not shown) into the male screw member.

The accommodation chamber 10a is roughly divided into a space (hereinafter referred to as the "first accommodation chamber") _10a1 from the assembled electric connecting device 20 in the chamber to the access opening 10b, and a space (hereinafter referred to as the "second accommodation chamber") 10a2 from the electric connecting device 20 in the chamber to the bottom wall ₁₂ (FIG. 2). In this accommodation chamber 10a, a first group of electric wires with connectors is accommodated in the first accommodation chamber _10a1 , and a first opening-side electric wire Wo1 and a second opening-side electric wire Wo2 of this first group of electric wires with connectors are pulled out to the outside from the first accommodation chamber _10a1 . In addition, in this storage chamber 10a, the first bottom side connector 52A and the second bottom side connector 52B in each second connector-attached wire group are accommodated in the second storage chamber _10a2 , and the first bottom side wire Wb1 and the second bottom side wire Wb2 in each second connector-attached wire group are pulled from the second storage chamber _10a2 to the first storage chamber _10a1 and then pulled out from the first storage chamber _10a1 .

Each second connector-attached electric wire group is assembled to the electrical connecting device 20 before being accommodated in the accommodation chamber 10a. However, the first bottom-side connectors 52A of each second connector-attached electric wire group all have the same housing shape. Furthermore, the first mating bottom-side connectors 27a of each second mating connector group all have the same housing shape. Therefore, in this wire harness WH, it is difficult to easily determine which first bottom-side connector 52A should be mated with which first mating bottom-side connector 27a. Therefore, in this wire harness WH, it is desirable to prevent incorrect connection between the first bottom-side connector 52A and the first mating bottom-side connector 27a in advance.

Furthermore, the second bottom-side connectors 52B of each second connector-attached electric wire group each have the same housing shape. The second mating bottom-side connectors 27b of each second mating connector group each have the same housing shape. Therefore, in this wire harness WH, it is difficult to easily determine which second mating bottom-side connector 27b each second bottom-side connector 52B should be mated with. Therefore, in this wire harness WH, it is desirable to prevent incorrect connection between the second bottom-side connector 52B and the second mating bottom-side connector 27b in advance.

Furthermore, here, the housing portions of the first bottom-side connector 52A and the second bottom-side connector 52B are formed in similar shapes that make them difficult to distinguish. And here, the housing portions of the first mating bottom-side connector 27a and the second mating bottom-side connector 27b are formed in similar shapes that make them difficult to distinguish. Therefore, with this wire harness WH, it is desirable to prevent in advance misconnections between the first bottom-side connector 52A and the second mating bottom-side connector 27b, and between the second bottom-side connector 52B and the first mating bottom-side connector 27a.

Therefore, this wire harness WH has the following configuration to prevent incorrect connection between each group of second connector-equipped electric wires and the electrical connecting device 20.

The second group of electric wires with connectors includes a wire holder 56 that bundles each of its electric wires (here, a pair of first bottom-side electric wires Wb1 and second bottom-side electric wires Wb2) together and secures them to the fixed portion 27d of the electrical connecting device 20 (Figures 2 and 5 to 8). This wire holder 56 is provided for each group of electric wires with second connectors.

The wire holder 56 is molded from an insulating material such as synthetic resin. For example, here, the wire holder 56 is a so-called band clamp having a band portion 56a that is wrapped around each wire (here, a pair of first bottom-side wires Wb1 and second bottom-side wires Wb2) to bundle them together, and a fixing portion 56b that is fitted into the through-hole-shaped fixed portion 27d of the electrical connecting device 20 to fix it (Figures 2, 5, and 6).

In the electrical connecting device 20, a mating connector (here, a pair of first mating bottom-side connector 27a and second mating bottom-side connector 27b) is provided to correspond to each connector of the second connector-attached wire group (here, a pair of first bottom-side connector 52A and second bottom-side connector 52B), and these respective mating connectors constitute a second mating connector group. In this electrical connecting device 20, one pair of second mating connector group is provided for each second connector-attached wire group. Furthermore, in the electrical connecting device 20, one fixed portion 27d is provided for each second connector-attached wire group, corresponding to the wire holder 56 of the second connector-attached wire group. In other words, in this electrical connecting device 20, a combination of one second mating connector group and one fixed portion 27d is provided for each second connector-attached wire group. Therefore, in this electrical connecting device 20, the combinations of the second mating connector group and the fixed portion 27d, which are provided to correspond to each connector in the second connector-attached wire group (here, a set of the first bottom-side connector 52A and the second bottom-side connector 52B) and the wire holder 56, are arranged side by side for each second connector-attached wire group.

Here, the combination of the second mating connector group and the fixed portion 27d for each second connector-attached wire group is arranged side by side in the mating connector arrangement direction. The multiple fixed portions 27d are arranged side by side with the second mating connector group in a direction perpendicular to the mating connector arrangement direction (i.e., the arrangement direction of a pair of first mating bottom-side connector 27a and second mating bottom-side connector 27b). Furthermore, the multiple fixed portions 27d are arranged on a wall surface that intersects with the mating connection direction of the first bottom-side connector 52A and first mating bottom-side connector 27a in the electrical connecting device 20 (the mating connection direction of the second bottom-side connector 52B and second mating bottom-side connector 27b). The multiple fixed portions 27d are provided on an insulating member (conductor holding member 27 or cover member 28). Here, each fixed portion 27d is provided on the conductor holding member 27.

In this wire harness WH, the wire holder 56 can be assembled to the fixed portion 27d for each second connector-attached group of wires. For the second connector-attached group of wires, the wire holder 56 is first assembled to the fixed portion 27d, and the first bottom-side connector 52A and the second bottom-side connector 52B that exist before the wire holder 56 can then be mated and connected to the first mating bottom-side connector 27a and the second mating bottom-side connector 27b. Therefore, in this wire harness WH, the second connector-attached group of wires can be assembled from the end in the order of the multiple fixed portions 27d. Therefore, with this wire harness WH, it is possible to target each second mating connector group arranged alongside the wire holder 56 attached to the fixed portion 27d, and mate and connect the first bottom-side connector 52A and the second bottom-side connector 52B ahead of the wire holder 56 to the first mating bottom-side connector 27a and the second mating bottom-side connector 27b of the second mating connector group. This wire harness WH therefore prevents incorrect connection of the second connector-attached wire group to the electrical connecting device 20, improving the ease of assembly.

Here, in the second connector-attached wire group, it is desirable to adjust the length of the second bottom-side wire Wb2 from the wire holder 56 to the second bottom-side connector 52B so that the second bottom-side connector 52B does not reach the position of the first mating bottom-side connector 27a, which is located away from the fixed portion 27d, of the first mating bottom-side connector 27a and the second mating bottom-side connector 27b. This prevents incorrect connections, such as assembling the first bottom-side connector 52A to the second mating bottom-side connector 27b or assembling the second bottom-side connector 52B to the first mating bottom-side connector 27a, in this wire harness WH, thereby improving the ease of assembly.

Furthermore, in the second group of electrical wires with connectors, the housing portions of the first bottom-side connector 52A and the second bottom-side connector 52B may be formed in different shapes to prevent incorrect connections, such as assembling the first bottom-side connector 52A to the second mating bottom-side connector 27b and assembling the second bottom-side connector 52B to the first mating bottom-side connector 27a.

In this way, each group of electric wires with a second connector is pre-assembled with the electric connecting device 20 before it is accommodated in the accommodation chamber 10a. Therefore, when the electric connecting device 20 is inserted into the accommodation chamber 10a through the access opening 10b, each group of electric wires with a second connector is inserted into the accommodation chamber 10a together with the electric connecting device 20 from the access opening 10b. Furthermore, for example, before storing each group of electric wires with a second connector in the accommodation chamber 10a, the terminal fittings 30 and the waterproof/dustproof member 40 are assembled to the housing 10 (here, the case body 10A) after the respective group of electric wires with a second connector is accommodated in the accommodation chamber 10a.

The terminal fitting 30 is an earthing member that dissipates noise carried on the braids of the first bottom-side electric wire Wb1 and the second bottom-side electric wire Wb2 from the housing 10 to the vehicle body. Therefore, the terminal fitting 30 is made of a metal material and physically and electrically connects the braids of the first bottom-side electric wire Wb1 and the second bottom-side electric wire Wb2. The terminal fitting 30 is then physically and electrically connected to the housing 10. A terminal fitting 30 is provided for each second group of electric wires with connectors.

The terminal fitting 30 has two electrical connection portions 31 and a fixed portion 32 (Figures 5 and 6).

One electrical connection portion 31 is physically and electrically connected to the braid of the first bottom-side wire Wb1. The other electrical connection portion 31 is physically and electrically connected to the braid of the second bottom-side wire Wb2. Specifically, the electrical connection portion 31 is a tubular portion that is physically and electrically connected to the braid of the first bottom-side wire Wb1 (second bottom-side wire Wb2) after the outer coating has been partially or entirely stripped away, leaving it exposed. The electrical connection portion 31 shown here places the exposed braid inside a tube, and the inner wall of the tube is physically and electrically connected to the exposed braid. For example, before being connected to the braid, this electrical connection portion 31 has a single-piece shape. By wrapping it around the exposed braid from the outside and crimping it, the inner wall of the tubular body is physically and electrically connected to the braid.

The fixed portion 32 is a portion for fixing the terminal fitting 30 to the housing 10 within the accommodation chamber 10a. This fixed portion 32 is formed as a flat plate-like piece with a circular through-hole 32a (Figures 5 and 6).

The terminal fitting 30 shown here is formed as a flag terminal (Figures 5 and 6). A flag terminal is a terminal in which two electrical connection portions 31 are arranged in parallel with the axial direction of the cylinder aligned, and the fixed portion 32 is offset from the assembly of these two electrical connection portions 31.

These terminal fittings 30 are fixed to the housing 10 within the accommodation chamber 10a. The terminal fittings 30 shown here are positioned within the accommodation chamber 10a near the second wire insertion portion 16 (described later) of the case body 10A and fixed to the case body 10A. Furthermore, each terminal fitting 30 for each second group of electric wires with connectors is positioned within the accommodation chamber 10a near the second wire insertion portion 16 for each second group of electric wires with connectors and fixed to the case body 10A.

The case body 10A has a notch cut out from the annular end face of the outer wall 11 on the access opening 10b side, forming a wire insertion portion (hereinafter referred to as the "second wire insertion portion") 16 through which a pair of first bottom-side electric wires Wb1 and second bottom-side electric wires Wb2 of the second connector-attached electric wire group is inserted between the inside and outside of the housing 10 (in other words, through which a pair of first bottom-side electric wires Wb1 and second bottom-side electric wires Wb2 are pulled from the outside of the housing 10 into the storage chamber 10a, or through which a pair of first bottom-side electric wires Wb1 and second bottom-side electric wires Wb2 are pulled from the storage chamber 10a to the outside of the housing 10) (Figure 4). This second wire insertion portion 16 is provided for each second connector-attached electric wire group. The second wire insertion portion 16 shown here is formed by cutting out the flange portion 11a along with the outer wall 11. The end face of this second wire insertion portion 16 on the access opening 10b side is used as an insertion port when inserting a pair of first bottom-side wires Wb1 and second bottom-side wires Wb2 into this second wire insertion portion 16. When cover 10B is attached to case body 10A, this second wire insertion portion 16 forms an opening whose insertion port is blocked by cover 10B. Here, this opening connects the inside and outside of housing 10 and is used as an inlet or outlet for a pair of first bottom-side wires Wb1 and second bottom-side wires Wb2.

This second wire insertion portion 16 also functions as a protective member holding portion that holds the waterproof/dustproof member 40. Therefore, the waterproof/dustproof member 40 is inserted into this second wire insertion portion 16 along with a set of first bottom-side wires Wb1 and second bottom-side wires Wb2, and the waterproof/dustproof member 40 is assembled.

The waterproof and dustproof member 40 prevents liquid and dust from entering the storage chamber 10a from outside the housing 10 via the second wire insertion portion 16. Therefore, the waterproof and dustproof member 40 is an elastically deformable member molded from a rubber material. A waterproof and dustproof member 40 is provided for each second group of electric wires with connectors. Therefore, the waterproof and dustproof member 40 primarily comprises a tubular portion through which a pair of first bottom-side electric wires Wb1 and second bottom-side electric wires Wb2 of the second group of electric wires with connectors is inserted. For example, the waterproof and dustproof member 40 is fitted into and held in place in the second wire insertion portion 16.

To secure the terminal fittings 30 near the waterproof and dustproof member 40, the case body 10A has a fixing portion 17 on the access opening 10b side of the accommodation chamber 10a where the fixed portion 32 of the terminal fitting 30 is placed and fixed (Figure 4). A fixing portion 17 is provided for each terminal fitting 30. For example, the fixing portion 17 shown here has a male screw member B3, such as a stud bolt, hanging down from it, and the fixed portion 32 is placed on it with the male screw member B3 inserted into the through hole 32a. The fixed portion 32 is screwed to the fixing portion 17 by a female screw member N3 that is threaded onto the male screw member B3 (Figures 3 and 4).

In the electrical junction box 1 and wire harness WH, first, the wire holders 56 and the respective wires (here, a set of first bottom-side wires Wb1 and second bottom-side wires Wb2) of all the second connector-equipped wire groups are assembled to the electrical connector 20, and then the terminal fittings 30 and the waterproof/dustproof members 40 are assembled to each of the wires (here, a set of first bottom-side wires Wb1 and second bottom-side wires Wb2). Next, in the electrical junction box 1 and wire harness WH, the electrical connector 20 and the second connector-equipped wire group are inserted into the storage chamber 10a through the access opening 10b, and the electrical connector 20 is assembled to the case body 10A. In the electrical junction box 1 and wire harness WH, the fixed portions 32 of the terminal fittings 30 are placed on the fixing portions 17 of the case body 10A, and the waterproof/dustproof member 40 is inserted into the second wire insertion portions 16 of the case body 10A, and the fixed portions 32 are screwed to the fixing portions 17. In the electrical junction box 1 and wire harness WH, the first group of connector-equipped electric wires is inserted into the accommodation chamber 10a through the access opening 10b, and this first group of connector-equipped electric wires is assembled to the electric connecting device 20 in the accommodation chamber 10a and the case body 10A. Thereafter, in the electrical junction box 1 and wire harness WH, the cover 10B is assembled to the case body 10A, and the access opening 10b is closed with this cover 10B. A female screw N4 is formed on the flange 11a of the case body 10A shown here, and the cover 10B is placed on it with the center of a through-hole (not shown) aligned with the screw axis of this female screw N4 (Figs. 1 and 3). The cover 10B is fixed to the flange 11a by threading a male screw member B4 inserted into the through-hole and screwing it into the female screw N4 (Figs. 1 and 3).

As described above, the wire harness WH of this embodiment can prevent incorrect connection between each of the second connector-equipped electric wire groups and the electrical connecting device 20, thereby improving the ease of assembly.

Furthermore, in this wire harness WH, each wire holder 56 can regulate the routing of each wire of the second connector-attached wire group (here, a set of first bottom-side wire Wb1 and second bottom-side wire Wb2) within the accommodation chamber 10a. Therefore, in this wire harness WH, it is possible to prevent the wires of multiple second connector-attached wire groups (first bottom-side wire Wb1, second bottom-side wire Wb2) from overlapping each other within the accommodation chamber 10a. Therefore, this wire harness WH can improve the spatial efficiency of the accommodation chamber 10a, thereby enabling the housing 10 to be made more compact, for example.

Furthermore, in this wire harness WH, overlapping of the wires (first bottom-side wires Wb1, second bottom-side wires Wb2) in the multiple second connector-equipped wire groups is prevented, thereby reducing noise interference between the wires. In this wire harness WH, the second connector-equipped wire groups include a first bottom-side wire Wb1 (either positive or negative) and a second bottom-side wire Wb2 (either positive or negative) in the same circuit, and the first bottom-side wire Wb1 and the second bottom-side wire Wb2 are bundled together using a wire holder 56. Therefore, in the second connector-equipped wire group, noise from the first bottom-side wire Wb1 and the second bottom-side wire Wb2 can be canceled out. In this way, this wire harness WH can effectively reduce noise by bundling each wire (first bottom-side wire Wb1, second bottom-side wire Wb2) in each second connector-attached wire group with the wire holder 56 and restricting their routing.

1 Electrical connection box 10 Housing 10a Storage chamber 20 Electrical connection tool 25b First bottom side terminal portion (first terminal portion)
26c Second bottom side terminal part (second terminal part)
27 Conductor holding member (insulating member)
27a: First mating bottom connector (first mating connector)
27b Second mating bottom side connector (second mating connector)
27d Fixed portion 28 Cover member (insulating member)
52A First Bottom Connector (First Connector)
52B Second bottom connector (second connector)
56 Wire holder Wb1 First bottom side electric wire (first electric wire)
Wb2 Second bottom side electric wire (second electric wire)
WH Wire harness

Claims (5)

The electrical connection box includes a plurality of groups of connectorized electric wires, each group including a plurality of connectorized electric wires with connectors connected to ends of the electric wires, and a mating connector for each of the connectors to be fitted and connected to each of the plurality of groups of connectorized electric wires,
The electrical connection box comprises:
a housing having a receiving chamber formed therein into which the plurality of groups of connector-attached electric wires are drawn from the outside;
an electric connecting device accommodated in the accommodation chamber and including, for each group of connector-attached electric wires, a mating connector group that is a combination of the mating connectors provided for each of the connectors of the group of connector-attached electric wires;
Equipped with
The group of electric wires with connectors includes an electric wire holder that bundles the respective electric wires together and fixes them to the fixed portion of the electric connecting device,
The electrical connecting device is a wire harness characterized in that the combinations of the mating connector group and the fixed portion, which are provided to correspond to each of the connectors and the wire holders in the group of connector-equipped electric wires, are arranged side by side for each group of connector-equipped electric wires. The mating connectors are arranged so that the mating connection directions of the connectors are all the same,
2. The wire harness according to claim 1, wherein the plurality of fixed portions are arranged on a wall surface of the electrical connecting device that intersects with the direction of fitting and connection. The wire harness according to claim 1 or 2, wherein the group of connector-equipped electric wires includes one of the positive and negative electric wires and the other of the positive and negative electric wires in the same circuit. the group of connectorized electric wires includes the electric wires and the connectors in two of the connectorized electric wires, and includes a first electric wire and a first connector in one of the connectorized electric wires and a second electric wire and a second connector in the other of the connectorized electric wires,
the mating connector group includes two mating connectors, a first mating connector into which the first connector is mated and connected, and a second mating connector into which the second connector is mated and connected,
The first mating connectors and the second mating connectors in the plurality of mating connector groups are arranged side by side in the same arrangement direction,
4. A wire harness as described in claim 1, 2 or 3, characterized in that a pair of the first mating connector and the second mating connector in each mating connector group are arranged side by side in a direction perpendicular to the arrangement direction for each mating connector group. the first mating connector includes a first terminal portion to which the first electric wire is electrically connected via the first connector,
the second mating connector includes a second terminal portion to which the second electric wire is electrically connected via the second connector,
the electrical connecting device includes an electrically insulating member that holds the first terminal portion of the first mating connector in a state where it can be mated and connected to the first connector, and that holds the second terminal portion of the second mating connector in a state where it can be mated and connected to the second connector;
The wire harness according to claim 4 , wherein the plurality of fixed portions are provided on the insulating member.