Abstract: An electrical connection box is to be attached to an attachment objective member. The electrical connection box includes: a circuit housing that accommodates a circuit substrate; a fuse box that detachably accommodates a fuse element, the fuse box being provided at an upper portion of the circuit housing in a state where the electrical connection box being attached to the attachment objective member; a plurality of bus bars that connect the circuit substrate and the fuse element; and a water-discharge channel that discharges water flowed into the fuse box to outside of the electrical connection box, the water-discharge channel being provided at a lower part of the bus bars in a state where the electrical connection box is attached to the attachment objective member, and at a position between the circuit housing and the fuse box.

Abstract: A circuit-constituting unit forming a distribution circuit or the like in a vehicle. The circuit-constituting unit includes a plurality of bus bars for constituting a power circuit; a semiconductor switching device provided in the power circuit; and a control circuit board. The bus bars are bonded to a surface of the control circuit board such that the bus bars are arranged to be generally coplanar with each other. The semiconductor switching device is mounted on both of the corresponding bus bars and the control circuit board. An opening may be formed through the control circuit board. In this case, one of terminals of the semiconductor switching device may be connected to a surface of the control circuit board facing away from the surface to which the bus bars are bonded. The other terminals may be connected respectively to the bus bar through the opening.

Abstract: An electrical connection box includes a fuse box having a bottom wall, the fuse box detachably and attachably accommodating a fuse element; a circuit casing being disposed below the fuse box, the circuit casing having a supporting section on an upper surface therof; the circuit casing accommodating a circuit assembly unit; and a plurality of bus bars electrically connecting between the fuse box and the circuit assembly unit, each bus bar being pulled out from the bottom face and drawn into the circuit casing through a wiring path of bus bar along a lower surface of the bottom wall. A draining space is formed between the fuse box and the circuit casing. The supporting section supports the bus bars from a lower side of the bus bars to at least partially come into contact with the bus bar along the bottom wall.

Abstract: It is an object to effectively reduce minute clearances generated between a heat radiating member and a vehicle body and ensure good cooling performance while avoiding the occurrence of impact and noise caused by the vibration of a vehicle. A circuit unit U is mounted such that an outer surface 11B of the heat radiating member 10 to which the circuit body 30 is fixed faces a body surface S of the vehicle with a clearance. Preferably, the mounting part 12 fixed to the body of the vehicle is extended, the surface 13 of the mounting part 12 which is in contact with the body is positioned to be substantially parallel to the outer surface 11B of the heat radiating member and a step is provided in both surfaces 13, 11B. In a mounted state, the body and the outer surface 11B of the heat radiating member are facing each other in a substantially parallel state and a clearance is formed between the body and the outer surface of the heat radiating member over the entire area excluding the mounting part 12.

Abstract: An electrical connection box is described that includes a plurality of connector parts provided on a circuit substrate. Each of the plurality of connector parts may be provided at a different portion of the circuit substrate and may include an engaging portion that may engage with a mating connector part that is exposed outward from the case. In one exemplary embodiment, the connector parts are arrayed, respectively, on an upper circuit substrate and a lower circuit substrate. Therefore, cables extended from the upper connector part and cables extended from the lower connector part may be drawn from the mating connector in parallel and may be easily handled. For example, cables extended from the upper connector part and cables extended from the lower connector part run in parallel and in the same direction with the substrate, thereby making it possible to easily package the cables into one bundle.

Abstract: An electrical connection box includes: a case having an opening, the case housing a circuit forming board having a conductive path; a connector being attached to an attachment surface of the case at end side of the opening, the connector being mounted on the circuit forming board; a terminal fitting being attached to the connector and connected to the conductive path of the circuit forming board by soldering; and an attachment member being provided between the attachment surface of the case and the connector. The attachment member allows a displacement of the connector by pressing the connector against an attachment surface of the case.

Abstract: A distribution unit has a power circuit section including a plurality of bus bars with electronic parts mounted on at least some of the bus bars. Ends of specific bus bars are projected from a main body section of the power circuit section in a adjacent manner to form fuse connection terminals. Each of the fuse connection terminals has a tip placement part to place a fuse terminal. An insulating case made of an insulating material for covering the power circuit section is opened in the projection direction of the fuse connection terminals to enable the fuse terminal to be placed in the tip placement part of the fuse connection terminal from the outside of the insulating case. The insulating case has a short-circuit prevention section intervening between the fuse connection terminals for preventing a short circuit between the fuse connection terminals.

Abstract: In a heat radiator plate, a mounting bracket extending from a peripheral edge portion of the heat radiator plate, an auxiliary heat radiator plate portion extending along the mounting bracket and positioned between the mounting bracket 39 and a body through a gap and a radiant heat radiator portion formed on a top end of the auxiliary heat radiator plate portion and opposing to the body through the gap are provided. Heat generated by a circuit construction body is conducted from the heat radiator plate, the auxiliary heat radiator plate portion and the radiant heat radiator portion to the gap and radiated to the body through the gap. The heat radiation characteristics of the connector box are improved.

Abstract: An electrical connection box includes a case, a connector, a terminal fitting, a cover, and a restricting member. The case has an opening and houses a circuit forming board including a conductive path. The connector is mounted on the circuit forming board to face an outside from an opening end side of the case. The connector has a fitting surface which faces a board surface of the circuit forming board. The terminal fitting is attached to the connector. The terminal fitting is connected to the conductive path of the circuit forming board by soldering. The cover is attached to the opening of the case. The restricting member is provided with the cover and the connector. The restricting member can restrict a displacement of the connector in a direction where the connector is engaged with an opposing connector.

Abstract: A terminal portion of non-implementation branch path branched from a input terminal is disposed within a fuse box. A switching member separated from the input terminal is implemented in an implementation branch path. The terminal portion of the non-implementation branch path is connected to one end terminal portion of the implementation branch path via fuse. The other end terminal portion of the implementation branch path is connected to tan output terminal fitting.

Abstract: An electrical connection box includes a housing having a bottom plane with a recessed part at which the bottom plane is at least partially depressed; a circuit substrate accommodated into the housing to be overlapped on the bottom plane, the circuit substrate having a hole connectable to an inside of the recessed part of the housing and a space above the circuit substrate; and a potting material filled so that the circuit substrate can be buried into the housing. The hole is formed at a position corresponding to the recessed part of the housing.

Abstract: A terminal portion of non-implementation branch path branched from a input terminal is disposed within a fuse box. A switching member separated from the input terminal is implemented in an implementation branch path. The terminal portion of the non-implementation branch path is connected to one end terminal portion of the implementation branch path via fuse. The other end terminal portion of the implementation branch path is connected to tan output terminal fitting.

Abstract: An electrical connection box includes: a case having an opening, the case housing a circuit forming board having a conductive path; a connector being attached to an attachment surface of the case at end side of the opening, the connector being mounted on the circuit forming board; a terminal fitting being attached to the connector and connected to the conductive path of the circuit forming board by soldering; and an attachment member being provided between the attachment surface of the case and the connector. The attachment member allows a displacement of the connector by pressing the connector against an attachment surface of the case.

Abstract: An electrical connection box includes a fuse box having a bottom wall, the fuse box detachably and attachably accommodating a fuse element; a circuit casing being disposed below the fuse box, the circuit casing having a supporting section on an upper surface therof; the circuit casing accommodating a circuit assembly unit; and a plurality of bus bars electrically connecting between the fuse box and the circuit assembly unit, each bus bar being pulled out from the bottom face and drawn into the circuit casing through a wiring path of bus bar along a lower surface of the bottom wall. A draining space is formed between the fuse box and the circuit casing. The supporting section supports the bus bars from a lower side of the bus bars to at least partially come into contact with the bus bar along the bottom wall.

Abstract: An electrical connection box includes a case, a connector, a terminal fitting, a cover, and a restricting member. The case has an opening and houses a circuit forming board including a conductive path. The connector is mounted on the circuit forming board to face an outside from an opening end side of the case. The connector has a fitting surface which faces a board surface of the circuit forming board. The terminal fitting is attached to the connector. The terminal fitting is connected to the conductive path of the circuit forming board by soldering. The cover is attached to the opening of the case. The restricting member is provided with the cover and the connector. The restricting member can restrict a displacement of the connector in a direction where the connector is engaged with an opposing connector.

Abstract: An electrical connection box includes a housing having a bottom plane with a recessed part at which the bottom plane is at least partially depressed; a circuit substrate accommodated into the housing to be overlapped on the bottom plane, the circuit substrate having a hole connectable to an inside of the recessed part of the housing and a space above the circuit substrate; and a potting material filled so that the circuit substrate can be buried into the housing. The hole is formed at a position corresponding to the recessed part of the housing.

Abstract: An electrical connection box is to be attached to an attachment objective member. The electrical connection box includes: a circuit housing that accommodates a circuit substrate; a fuse box that detachably accommodates a fuse element, the fuse box being provided at an upper portion of the circuit housing in a state where the electrical connection box being attached to the attachment objective member; a plurality of bus bars that connect the circuit substrate and the fuse element; and a water-discharge channel that discharges water flowed into the fuse box to outside of the electrical connection box, the water-discharge channel being provided at a lower part of the bus bars in a state where the electrical connection box is attached to the attachment objective member, and at a position between the circuit housing and the fuse box.

Abstract: An electrical connection box includes: a circuit substrate having a conducting channel formed thereon; a case that accommodates the circuit substrate; a plurality of connector parts provided on the circuit substrate and having an engaging portion that engages with a mating connector part, the engaging portion being exposed outward from the case; and a plurality of conductive members that are electrically connected to the conducting channel, wherein an end portion of the conductive members is accommodated within the connector parts respectively, and wherein each of the connector parts is provided to be engaged with a respective mating connector in a direction parallel to the circuit substrate and the direction same with one another.

Abstract: A distribution unit has a power circuit section including a plurality of bus bars with electronic parts mounted on at least some of the bus bars. Ends of specific bus bars are projected from a main body section of the power circuit section in a adjacent manner to form fuse connection terminals. Each of the fuse connection terminals has a tip placement part to place a fuse terminal. An insulating case made of an insulating material for covering the power circuit section is opened in the projection direction of the fuse connection terminals to enable the fuse terminal to be placed in the tip placement part of the fuse connection terminal from the outside of the insulating case. The insulating case has a short-circuit prevention section intervening between the fuse connection terminals for preventing a short circuit between the fuse connection terminals.

Abstract: In the power distributor using a semiconductor switching element, input terminals 10I and 10L, output terminals 12A-12J, connected to the element, and more preferably, the board terminals 30 and 32, are structured by a metallic plate, and arranged on the same plane perpendicular to the plate thickness. The metallic plate can be integrated by the resin mold, thereby the structure can be greatly simplified. The metallic plate can be produced by a greatly simple method by which, after the punching out of the metallic plate and the molding of the resin mold, a predetermined portion of the metallic plate is cut and the semiconductor switching element is mounted, and it can contribute to also the reduction of the cost.