JP3690943B2 - Electrical junction box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical junction box that is used for interconnecting wire harnesses and the like to supply power.
[0002]
[Prior art]
The electrical connection box has a structure including a power supply unit having a predetermined circuit composed of a bus bar, an electric wire, and the like, and a plurality of connector housings for connecting the wire harness.
[0003]
In recent years, with the increase in electrical equipment provided in automobiles, wire harnesses are divided into functions of electrical equipment and configured as sub-wire harnesses, and the electrical connection box has been divided and connected to each sub-wire harness. Yes. As a result, the connection structure of the sub-wire harness in the electrical junction box becomes complicated, and the workability deteriorates and the quality may not be stable.
[0004]
Then, in order to simplify a connection with a wire harness, the electrical connection box of the type which connects in the several sub wire harness unit which comprises this wire harness is proposed as Japanese Utility Model Publication No. 6-80318. As shown in FIG. 6, this electrical junction box has a cover body 2 provided with a plurality of cavities 1 for mounting electrical components such as fuses and relays, and a butt-fixed and fixed wire harness 3 to the cover body 2. And a back cover 6 provided with a housing portion 5 to which terminals of terminals of each electric wire 4 to be mounted are mounted, and a circuit to which electrical components and electric wire terminals are connected is accommodated inside the cover body 2 and the back cover 6. Yes. The back cover 6 is divided and formed as a plurality of sub-wire harness back covers 6a, 6b, 6c corresponding to the sub-wire harnesses 3a, 3b, 3c sorted by the destination of the wire harness 3, the load system, and the like. The plurality of cavities 1 and circuits are formed in blocks corresponding to the plurality of sub-wire harness back covers 6a, 6b, 6c.
[0005]
[Problems to be solved by the invention]
However, in the electrical junction box having such a configuration, when the number of sub-wire harnesses 3a, 3b, 3c... Increases, the number of sub-wire harness back covers 6a, 6b, 6c. Since these sub-wire harness back covers 6a, 6b, 6c,... Are arranged in a plane, there is a problem that the electrical junction box is enlarged. Further, in this electrical junction box, the sub-wire harnesses 3a, 3b, 3c are connected by connectors at their terminals, so that there is a problem that the number of connectors used increases and the cost increases. In addition, the inside of the electrical junction box has a circuit configuration with bus bars and wiring, and there is a problem that it is difficult to change the circuit or the like and the contribution to the wire harness productivity is low.
[0006]
An object of the present invention is to provide an electrical junction box that can suppress an increase in size as much as possible even if the number of sub-wire harnesses increases.
Another object of the present invention is to provide an electrical junction box that can suppress an increase in the number of connectors used even if the number of sub-wire harnesses is increased.
It is another object of the present invention to provide an electrical junction box that can improve wire harness productivity by facilitating changes such as circuit changes.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is an electrical junction box in which connection with a wire harness is performed in units of a plurality of sub-wire harnesses constituting the wire harness.
A plurality of wire set grooves are formed on the plate surface of the insulating plate and arranged in parallel with each other through the bare conductors of the wires constituting the sub-wire harnesses, and through holes are formed at the bottom of the wire set grooves. A plurality of sub-wire harness connecting plates, which are formed in a plurality, and each of the wires of the sub-wire harness is passed in parallel to one corresponding to each sub-wire harness, and are stacked on each other When,
Each of the through-connecting conductors that are formed in a group at the position corresponding to the through-holes formed of long tab terminals and corresponding to the through-holes formed in the bottom of each electric wire set groove of each of the sub-wire harness connecting plates is respectively provided in the insulating housing. A connector part configured to support;
A plurality of cavities for mounting electrical components are provided on one side, and power supply terminal portions to which the through-connection conductors are electrically connected are supported on a support surface in a predetermined arrangement on the opposite side. A power source provided with a connecting plate support base;
Each of the electric wire set grooves is formed so that the electric wire conducting portion and the electric wire gripping portion are opposed to each other on both sides of one end side of the bottom plate portion having a width corresponding to the groove width of the electric wire set groove. An intermediate connection terminal formed by extending a cylindrical through connection conductor connecting portion on one side of the end side;
With
The intermediate connection terminal to which the connection electric wire is connected is set in the electric wire set groove of the sub wire harness connection plate, and the electric wire of the sub wire harness is inserted between the electric connection portions of the set intermediate connection terminal. The through-connection conductors of the sub-wire harness connection plates are passed through the through-holes of the sub-wire harness connection plates, thereby electrically connecting the through-connection conductors to the bare conductors of the wires of the sub-wire harnesses. A three-dimensional power supply circuit is configured on the sub-wire harness passed through the wire harness connection plate.
[0008]
By configuring in this way, the increase in the number of sub-wire harnesses is only an increase in the number of sub-wire harness connection plates stacked in the power supply unit, and even if the number of sub-wire harnesses increases, the electrical connection box Can be suppressed as much as possible. And, as a result of being electrically connected to a plurality of electric wires passed through the sub-wire harness connection plate in which the through-connection conductors are laminated, a circuit that connects the sub-wire harness to the power source even if the number of sub-wire harnesses increases It is possible to suppress an increase in the number of connectors used to form the connector. Furthermore, since the circuit is configured on the sub-wire harness passed through each sub-wire harness connecting plate, the productivity of the wire harness is improved and the cost can be reduced.
[0009]
The invention according to claim 2, in claim 1, and stacking the plurality of sub-wire harnesses connecting plate on the connecting plate support portions of the front Symbol power unit,
Each through-connecting conductor of the connector part is passed through each through-hole of each of the sub-wire harness connecting plates, the tip is connected to each terminal part on the connecting-plate support base part, and each of the through-connecting conductors passes therethrough. The through-connecting conductor is in press-contact with the through-connecting conductor connecting portion existing in the through-hole to electrically connect each through-connecting conductor and the bare conductor of each electric wire, and by the tip of each through-connecting conductor A three-dimensional power supply circuit is configured on each sub-wire harness connected to each terminal portion of the power supply unit and passed through each sub-wire harness connection plate.
[0010]
When the electrical connection box is formed in this way, the electric wires constituting each sub-wire harness are electrically connected by the electric wire conducting portion of each intermediate connection terminal on the corresponding sub-wire harness connection plate. The through connection conductor connection part of the intermediate connection terminal is electrically connected to each through connection conductor of the connector part, and a required circuit can be easily formed on the sub wire harness passed through each sub wire harness connection plate. The power can be supplied from the power supply unit. The circuit described above can be easily changed such as changing the circuit by obtaining or changing the setting position of the intermediate connection terminal and the support position of the through-connection conductor to a required position.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 show an example of an embodiment of an electrical junction box according to the present invention. In the electrical junction box of this example, the power supply unit 7 and the electric wires 4 of the sub-wire harnesses 3a, 3b, 3c are passed in parallel to one corresponding to each individual sub-wire harness 3a, 3b, 3c. And a plurality of sub-wire harness connection plates 8a, 8b, 8c stacked on the power supply unit 7 and a plurality of through-connection conductors 9 pass through the sub-wire harness connection plates 8a, 8b, 8c. And a connector portion 11 that is electrically connected to the electric wire 4 and connected to each terminal portion 10 of the power source portion 7 to form a power feeding circuit.
[0012]
The power supply unit 7 is provided with a plurality of cavities 1 for mounting electrical parts such as fuses and relays on one side thereof, and each terminal for power supply to which each through connection conductor 9 is electrically connected on the opposite side A connection plate support base portion 12 is provided in which the portion 10 is supported on the support surface in a predetermined arrangement.
[0013]
Each of the sub-wire harness connection plates 8a, 8b, 8c is configured as follows. A plurality of parallel wire setting grooves 14 through which the bare conductors 4a of the electric wires 4 constituting the predetermined sub-wire harnesses 3a, 3b, 3c are respectively passed are formed on the plate surface of the insulating plate 13, and each electric wire set A plurality of through-holes 15 through which the through-connecting conductors 9 are inserted are formed at predetermined intervals in the longitudinal direction at the bottom of the groove 14. The through-holes 15 are passed through the wire set grooves 14 in the wire set grooves 14. An intermediate connection terminal 16 having an electric wire conducting portion 16a electrically connected to the bare conductor 4a of the electric wire 4 and a through connecting conductor connecting portion 16b through which the required through connecting conductor 9 is through connected is at an arbitrary position. Is set.
[0014]
More specifically, an insulating protrusion 17 is provided between the wire setting grooves 14 on the plate surface of the insulating plate 13, and the side wall of the insulating protrusion 17 communicates with the wire setting groove 14. Engagement recesses 14a that constitute a part of the wire setting groove 14 and engage the through-connection conductor connection portions 16b of the intermediate connection terminals 16 are formed at predetermined intervals in the longitudinal direction. The engagement recesses 14a A through-hole 15 through which the through-connection conductor 9 is inserted is formed at the bottom.
[0015]
In addition, the intermediate connection terminal 16 set in each of the wire setting grooves 14 is connected to both sides on one end side of the bottom plate portion 16c having a predetermined length having a lateral width corresponding to the groove width of the wire setting groove 14. The portion 16a and the wire gripping portion 16d are formed so as to face each other, and the electric wire 4 is inserted between the facing wire conducting portions 16a and between the wire gripping portions 16d, and the bottom plate A cylindrical through-connecting conductor connecting portion 16b, through which the through-connecting conductor 9 is through-connected, is extended on one side of the other end of the portion 16c.
[0016]
On the inner surface side of the electric wire conducting portion 16a, there is formed a conductive protrusion 16e that bites into the inserted electric wire 4 and comes into contact with the conducting wire or presses and contacts the bare conducting wire 4a. Moreover, the electric wire gripping portion 16d is configured to grip the electric wire 4 that is bent inward and inserted.
[0017]
In addition, if the naked conducting wire 4a of the electric wire 4 is inserted like this example, the electric wire holding part 16d will also become a conduction | electrical_connection part electrically connected with the naked conducting wire 4a.
[0018]
The through-connecting conductor connecting portion 16b extended to one side of the other end side of the bottom plate portion 16c is between the through-connecting conductor 9 inserted through the bottom plate portion 16c, the wire conducting portions 16a, and the wire gripping portions 16d. It does not interfere with the inserted electric wire 4. And this penetration connection conductor connection part 16b is engaged with the engagement recessed part 14a formed in the side wall of the insulation protrusion 17, when the intermediate connection terminal 16 is set in the electric wire set groove 14, and When engaged, the cylindrical hole 16f of the through-connecting conductor connecting portion 16b and the through-hole 15 formed in the bottom of the engaging concave portion 14a coincide with each other. Further, the through-connection conductor connection portion 16b supports the through-connection conductor connection portion 16b by elastically contacting the wall surface of the engagement recess portion 14a when the through-connection conductor connection portion 16b is engaged with the engagement recess portion 14a. An elastic piece 16g is provided.
[0019]
In the intermediate connection terminal 16 of this example, the through connection conductor connection portion 16b extends to the left side of the bottom plate portion 16c as shown in FIG. 5, but although not shown, the right side or left and right sides of the bottom plate portion 16c. Those extending on both sides can also be used. Further, the electric wires 4 of the sub-wire harnesses 3a, 3b, 3c set in the electric-wire setting grooves 14 of the insulating plate 13 constituting the sub-wire harness connection plates 8a, 8b, 8c may be their terminals or intermediate.
[0020]
The sub-wire harness connection plates 8 a, 8 b, 8 c having such a structure are stacked on the connection plate support base 12 of the power supply unit 7.
[0021]
The connector portion 11 is configured by supporting each through-connecting conductor 9 made of a long tab terminal on an insulating housing 18. Each through connection conductor 9 is arranged in parallel at a position corresponding to the through hole 15 formed in the bottom of each electric wire set groove 14 of each sub wire harness connection plate 8a, 8b, 8c. A connector housing 19 is provided in the insulating housing 18 so as to surround the end portions of the through-connecting conductors 9 in the group as connection terminals.
[0022]
As shown in FIG. 1, such an electrical connection box has intermediate connection terminals 16 set on predetermined positions of the wire setting grooves 14 of the insulating plate 13 on the connection plate support base portion 12 of the power supply unit 7. The sub-wire harness connection plates 8a, 8b, 8c gripped through the bare conductors 4a of the electric wires 4 constituting the sub-wire harnesses 3a, 3b, 3c are stacked and stacked, and the through-connection conductors 9 of the connector section 11 are connected to the sub-wire harness connection plates 8a, 8b, 8c. When the wire harness connection plates 8a, 8b, and 8c are passed through the through holes 15 and the tips are connected to the terminal portions 10 on the connection plate support base 12, the through connection conductors 9 pass through the through holes 15 respectively. The through-connecting conductor 9 is pierced and electrically connected to the existing through-connecting conductor connecting portion 16b, and each through-connecting conductor 9 and the bare conductor 4a of each electric wire 4 are electrically connected. Conductor 9 is power supply Is connected to the terminal portions 10 of the respective sub-wire harnesses connecting plate 8a, 8b, the sub-wire harnesses 3a, which passed through the 8c, 3b, three-dimensional feed circuit is configured on 3c.
[0023]
According to such an electrical junction box, the increase in the number of sub-wire harnesses 3a, 3b, 3c... Only increases the number of sub-wire harness connection plates 8a, 8b, 8c. Yes, even if the number of sub-wire harnesses 3a, 3b, 3c... Increases, it is possible to suppress as much as possible the enlargement of the electrical junction box.
[0024]
Then, as a result of the through-connection conductor 9 being electrically connected to the bare conductors 4a of the plurality of electric wires 4 passed through the laminated sub-wire harness connection plates 8a, 8b, 8c, the sub-wire harness 3a , 3b, 3c can be prevented from increasing the number of connectors used to form a circuit for connecting the sub-wire harnesses 3a, 3b, 3c to the power supply unit 7. Furthermore, since the circuit is configured on the sub-wire harnesses 3a, 3b, 3c passed through the sub-wire harness connection plates 8a, 8b, 8c, the productivity of the wire harness can be improved and the cost can be reduced.
[0025]
Furthermore, the circuit obtains or changes the set position of the intermediate connection terminal 16 in the wire setting groove 14 of the insulating plate 13 and the support position of the through-connection conductor 9 in the insulating housing 18 of the connector portion 11 to a required position. Therefore, it is possible to easily change settings such as circuit changes.
[0026]
【The invention's effect】
As described above, according to the first aspect of the present invention, the increase in the number of sub-wire harnesses is only an increase in the number of sub-wire harness connection plates stacked in the power supply unit. Increase in the size of the electrical connection box can be suppressed as much as possible, and the through connection conductor is electrically connected to the plurality of electric wires passed through the laminated sub-wire harness connection plates. As a result, even if the number of sub-wire harnesses increases, it is possible to suppress an increase in the number of connectors used to form a circuit for connecting the sub-wire harness to the power supply unit. Since it is comprised on the sub wire harness passed through the harness connection plate, the productivity of the wire harness can be improved and the cost can be reduced.
[0027]
Moreover, in the invention according to claim 2, the electric wires constituting each sub-wire harness are electrically connected to each other through the electric-wire conducting portion of each intermediate connection terminal on the sub-wire harness connection plate and penetrated through the intermediate connection terminal. The connecting conductor connecting portion is electrically connected to each through-connecting conductor of the connector portion, and a required circuit can be easily configured on the sub-wire harness passed through each sub-wire harness connecting plate. Power can be supplied from the power supply unit. Then, the setting position of the intermediate connection terminal and the support position of the through connection conductor can be obtained or changed to a required position, so that it is possible to easily change the circuit change, thereby improving the productivity of the wire harness. Further improvement and cost reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an example of an embodiment of an electrical junction box according to the present invention.
FIG. 2 is a perspective view of an insulating plate serving as a sub-wire harness connecting plate used in this example and an intermediate connection terminal set on the insulating plate.
FIG. 3 is a partial plan view of an insulating plate serving as a sub-wire harness connecting plate used in this example.
FIG. 4 is a partial plan view showing an example of a state in which each intermediate connection terminal is set on the sub-wire harness connection plate used in this example and the electric wires of the sub-wire harness are set on these intermediate connection terminals.
FIG. 5 is a perspective view showing an example of an intermediate connection terminal used in this example and a through connection conductor connected to the intermediate connection terminal.
FIG. 6 is an exploded perspective view of a conventional electric junction box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cavity 2 Cover main body 3 Wire harness 3a, 3b, 3c Sub wire harness 4 Electric wire 4a Bare conducting wire 5 Housing part 6 Back cover 6a, 6b, 6c Sub wire harness back cover 7 Power supply part 8a, 8b, 8c Sub wire harness Connection plate 9 Through-connection conductor 10 Terminal portion 11 Connector portion 12 Connection plate support base portion 13 Insulating plate 14 Wire set groove 14a Engaging recess 15 Through hole 16 Intermediate connection terminal 16a Wire conduction portion 16b Through-connection conductor connection portion 16c Bottom plate portion 16d Wire gripping portion 16e Conductive protrusion 16f Tube hole 16g Elastic piece 17 Insulating protrusion 18 Insulating housing 19 Connector housing

Claims (2)

In the electrical junction box where the connection with the wire harness is made in units of a plurality of sub-wire harnesses constituting the wire harness,
A plurality of wire set grooves are formed on the plate surface of the insulating plate and arranged in parallel with each other through the bare conductors of the wires constituting the sub-wire harnesses, and through holes are formed at the bottom of the wire set grooves. A plurality of sub-wire harness connecting plates, which are formed in a plurality, and each of the wires of the sub-wire harness is passed in parallel to one corresponding to each sub-wire harness, and are stacked on each other When,
Each of the through-connecting conductors that are formed in a group at the position corresponding to the through-holes formed of long tab terminals and corresponding to the through-holes formed in the bottom of each electric wire set groove of each of the sub-wire harness connecting plates is respectively provided in the insulating housing. A connector part configured to support;
A plurality of cavities for mounting electrical components are provided on one side, and power supply terminal portions to which the through-connection conductors are electrically connected are supported on a support surface in a predetermined arrangement on the opposite side. A power source provided with a connecting plate support base ;
Each of the electric wire set grooves is formed so that the electric wire conducting portion and the electric wire gripping portion are opposed to each other on both sides of one end side of the bottom plate portion having a width corresponding to the groove width of the electric wire set groove. An intermediate connection terminal formed by extending a cylindrical through connection conductor connecting portion on one side of the end side;
With
The intermediate connection terminal to which the connection electric wire is connected is set in the electric wire set groove of the sub wire harness connection plate, and the electric wire of the sub wire harness is inserted between the electric connection portions of the set intermediate connection terminal. The through-connection conductors of the sub-wire harness connection plates are passed through the through-holes of the sub-wire harness connection plates, thereby electrically connecting the through-connection conductors to the bare conductors of the wires of the sub-wire harnesses. An electrical connection box characterized in that a three-dimensional power supply circuit is configured on the sub-wire harness passed through a wire harness connection plate. Laminating the plurality of sub-wire harness connection plates on the connection plate support base portion of the power supply unit,
Each through-connecting conductor of the connector part is passed through each through-hole of each of the sub-wire harness connecting plates, the tip is connected to each terminal part on the connecting-plate support base part, and each of the through-connecting conductors passes therethrough. The through-connecting conductor is in press-contact with the through-connecting conductor connecting portion existing in the through-hole to electrically connect each through-connecting conductor and the bare conductor of each electric wire, and by the tip of each through-connecting conductor The electrical connection box according to claim 1, wherein the electrical connection box is configured to connect to each terminal portion of the power supply unit and to form a three-dimensional power feeding circuit on the sub-wire harness passed through each sub-wire harness connection plate. .

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