Abstract: To provide an electrical connection box which can easily respond to a change in the circuit construction among different types of vehicles and among different grades of the same type of vehicles, and can be generally used, an internal circuitry of an electrical connection box is divided into a common circuitry 1 and a special circuitry 2. A conductive layer on which the common circuitry 1 is formed and another conductive layer on which the special circuitry 2 is formed are arranged one over the other at different levels in a casing of the electrical connection box. The common circuitry 1 comprises flat busbars 10, whereas the special circuitry 2 preferably comprises a wire, longitudinal busbars 20, or a flat circuit 25 such as a flexible printed circuit (FPC) or a printed circuit board (PCB). The common circuitry 1 and the special circuitry 2 may alternatively be formed of the same types of conductors or circuit members.

Abstract: An electrical connection construction for connecting conductive members of an internal circuit of an electrical connection box and wires of a wiring harness, in which the wires of the wiring harness are inserted into the electrical connection box through openings formed on the electrical connection box such that conductors of the wires of the wiring harness are connected to the conductive members of the internal circuit of the electrical connection box, respectively by a joining member.

Abstract: An internal circuit, which is constituted by one of a printed circuit board and an FPC, and has small-current conductive paths arranged at a small pitch, is provided within a casing and of the electric connection box, and a small integrated fuse is mounted on the printed circuit board or the FPC, and fuses of the small integrated fuse are connected respectively to the small-current conductive paths, and electronic devices are mounted on the printed circuit board or the FPC.

Abstract: A wire assembly is formed by insertion of a wire into a wire guide including a wire guide which is either a receiving groove or pairs of guide projections in or on an insulation substrate. Cramping terminals may be connected to the wire, and the wire may be cut in desired positions to separate it into a plurality of circuits. A retainer is provided which is at an angle to the leading end of the wire guide at a starting position. The wire is inserted into the wire guide after its leading end has been introduced into the wire retainer.

Abstract: A pair of electric connection boxes are mounted respectively on a large-size instrument panel and a body panel in an automobile and have respective collective-connecting connector portions. One or both of the electric connection boxes is movably supported through resilient support members (for example 27) such as rubber pieces or springs within an outer frame which is fixedly mounted on the associated panel so as to be self-aligning when the boxes are joined. A bolt (for example 58) is used to fix the connector portions (for example 33, 45) together and also to secure the instrument panel (for example 10) to the body panel (for example 14). In another embodiment, (FIGS. 5-7) an insulating plate (for example 123) having bus bars (for example 122) is resiliently supported within a casing formed by housing parts (for example 120, 121) which are fixed to an instrument panel (for example 110).

Abstract: A continuous strand of wire is laid in a wire groove or between pairs of guides on a substrate and is cut at desired locations to form individual circuits. At least one recess below the level of the wire laying plane is positioned to correspond to a scrap wire portion to be cut off. The recess is wide enough to allow insertion of cutters. The cutters include pairs of first and second cutting blades located at opposite sides of the wire which are moved toward the wire so that both ends of the scrap wire portion are cut by the first cutting blades and by the second cutting blades, respectively.

Abstract: An electrical connection box includes an internal circuit in which a several pressing contact terminals are brought into pressing contact with a wire. Input-output terminals of the pressing contact terminals are connected to external circuits. The wire includes an electrically operative portion between one of the pressing contact terminals connected to an external electrical heating element (such as a relay, a fuse, or the like) and another one of the pressing contact terminals. In one example (FIGS. 5 and 6), the electrically operative portion is shifted from a minimal distance path, which takes into account other wires and obstacles, between the one pressing contact terminal and the another pressing contact terminal. This lengthens the wiring path of the wire to a region having a low wiring density which provides additional surface area for heat dissipation. In another examples, (FIGS. 7 and 8) inoperative ends (b, c) of the wire are extend and used to dissipate heat.

Abstract: A wiring construction of an electrical connection box which has an internal circuit including a wire and a plurality of pressing contact terminals connected to the wire and in which an insulating plate is accommodated in a casing, the wiring construction comprising: a plurality of wiring grooves for receiving the wire or a plurality of pairs of wiring projections for guiding the wire therebetween, which are provided on at least one of opposite faces of the insulating plate such that predetermined portions of the wiring grooves or the wiring projections extend to an outer peripheral edge of the insulating plate; wherein a nonconnective portion of the wire is disposed at the outer peripheral edge of the insulating plate by cutting from the wire a portion of the wire projecting out of the outer peripheral edge of the insulating plate.

Abstract: A wiring construction of an electrical connection box which has an internal circuit including a wire and a plurality of pressing contact terminals connected to the wire and in which an insulating plate is accommodated in a casing, the wiring construction comprising: a plurality of wiring grooves for receiving the wire or a plurality of pairs of wiring projections for guiding the wire therebetween, which are provided on at least one of opposite faces of the insulating plate such that predetermined portions of the wiring grooves or the wiring projections extend to an outer peripheral edge of the insulating plate; wherein a nonconnective portion of the wire is disposed at the outer peripheral edge of the insulating plate by cutting from the wire a portion of the wire projecting out of the outer peripheral edge of the insulating plate.

Abstract: An instrument panel harness is arranged between an instrument panel and a body, and can be easily connected to other wire harnesses, thereby reducing the time and labor required for the operation. A junction box, connected to an instrument panel harness is divided into a first junction box, having a large-current circuit, and a second junction box having a small-current circuit, and a pair of collective-fitting connector portions, fitted together, are provided on the first and second junction boxes, respectively. The first junction box is attached to an instrument panel, and is connected to the instrument panel harness. The second junction box is attached to a body panel and a plurality of harness connector portions, fitted respectively on wire harnesses, are provided on the second junction box.

Abstract: An electrical connection construction between an electrical connection box and an electronic circuit unit, comprising: a plurality of bus bars which are provided in the electrical connection box and each include a first tab; and a plurality of terminals which are provided in the electronic circuit unit and a front end of each of which is inserted into a front end of the first tab of each of the bus bars of the electrical connection box so as to be connected to the first tab of each of the bus bars of the electrical connection box; wherein the front end of each of the terminals is formed into a second tab and the first tab of each of the bus bars of the electrical connection box and the second tab of each of the terminals of the electronic circuit unit are provided so as to orthogonally intersect with each other; wherein a pressing contact slit is formed at a front end of one of the first and second tabs so as to receive a front end of the other of the first and second tabs.

Abstract: To provide an electrical connection box which can easily respond to a change in the circuit construction among different types of vehicles and among different grades of the same type of vehicles, and can be generally used, an internal circuitry of an electrical connection box is divided into a common circuitry 1 and a special circuitry 2. A conductive layer on which the common circuitry 1 is formed and another conductive layer on which the special circuitry 2 is formed are arranged one over the other at different levels in a casing of the electrical connection box. The common circuitry 1 comprises flat busbars 10, whereas the special circuitry 2 preferably comprises a wire, longitudinal busbars 20, or a flat circuit 25 such as a flexible printed circuit (FPC) or a printed circuit board (PCB). The common circuitry 1 and the special circuitry 2 may alternatively be formed of the same conductive material.

Abstract: A circuit component having a plurality of flat cables each formed by covering a group of parallel wires with a thick layer of insulating resin. The cables are superposed and preferably arranged so that their axes are not parallel. Cramping terminals are inserted into flat cables from above and below in specified predetermined positions, and are securely held therein. Wire contacts of the cramping terminals are connected to specific wires by penetrating the wire coatings means of cutters. The cramping terminal may be formed with a tab which forms an external terminal and connects the wire(s) therewith. The cramping terminals may also connect two or more wires of the same flat cable conductor member or of different flat cables, thus forming the desired circuit. A circuit component, including the desired circuit is separately formed in advance. A junction box is completed merely by mounting the preformed circuit component in the casing thereof.

Abstract: An electrical connection box having an internal circuit includes a first circuit having a large current carrying capacity and a second circuit having a small current carrying capacity. The first circuit includes wires each having stranded conductors and contact bonding terminals contact bonded to the stranded conductors and the second circuit includes a single conductor and pressing contact terminals.

Abstract: To provide a wiring circuit for an electrical connection box, a method and a device for cutting a wire for circuits is provided. The method and device are inexpensive and capable of securely cutting the wire and separating the circuits in one operation step. A wiring circuit for an electrical connection box comprises wire portions and connecting terminals connected with the wire portions. The wire portions are made by cutting a wire such that at least one of the two cut ends of the wire is bent with respect to the extension direction of the wire simultaneously with the cutting of the wire.

Abstract: Wiring harnessess are current feedback paths from the loads to a battery, thereby forming a closed-circuit. For each load, there are provided a current detector and a current control; each current detector compares the current input to a junction box to the output current from the corresponding load via a corresponding wiring harness, and outputs a normal state signal when the two currents are equal. When the input and output currents are at variance with each other, it outputs an abnormal state signal. Each current controller causes, upon receipt of the normal state signal, the input current to flow into the corresponding load along normal current path; upon receipt of the abnormal state signal, the input current is directed to flow to a current cutoff which includes a thermal device which is disposed in parallel with the current path and whose resistance value changes with temperature, thereby cutting off the flow of current to the load.

Abstract: An electric connection casing comprising a large intensity-current circuit through electric current having a large intensity flows; a small intensity-current circuit through electric current having a small intensity flows; and a fuse and a relay interposed between the large intensity-current circuit and the small intensity-current circuit, wherein the large intensity-current circuit and the small intensity-current circuit comprise a plurality of single core wires, respectively; and a plurality of pressure-contact terminals which penetrates through an insulation coating of the single core wire, thus being connected with the single core wire by pressing the pressure-contact terminal against the single core wire.

Abstract: A bus bar construction of an electrical connection box, comprising: a plurality of m and n (m=integer.gtoreq.2, n=integer.gtoreq.2) bus bar pieces in each of which a predetermined number of substantially H-shaped bus bars are arranged in series at a preset pitch and intermediate portions of neighboring ones of the bus bars are linked with each other; the bus bars each having an upper portion formed with a first slot and a lower portion formed with a second slot; the m bus bar pieces being arranged longitudinally in m columns; the n bus bar pieces being arranged laterally in n rows on the m bus bar pieces so as to fit the second slots of the n bus bar pieces into the first slots of the m bus bar pieces h=from above such that the m and n bus are pieces are assembled with each other in latticed shape. The intermediate portions of each of the n bus bar pieces is then cut off in accordance with a necessary circuit pattern.

Abstract: An electrical connection box comprises a casing (10,11;111,112) having a receiving portions (17-20;30;18';116,177) for making a mechanical connection with connecting portions (22-25;31;3';23) of external circuits, wherein an engaging surface (S;116a-118a) is formed in association with each of the receiving portions for the connecting portion of the respective external circuit, and internal circuits (W1,W2,15A-15;D;W1, W2, 15E; W1,W2,120). The internal circuits comprise wires (W1,W2) arranged in at least one stage, and connection terminals (15A-15D;15E;120) which are connected with any of the wires (W1,W2) and which extend to respective receiving portions (17-20;30;18'; 116,117) of the casing (10,11; 111,112) so as to form input/output terminal portions (15c) for the electrical connection with the external circuits.

Abstract: An electric current distribution system is provided for a plurality of types of automotive vehicles. The distribution system is installed in a vehicle compartment and distributes current from an input terminal to loads (6) via a plurality of output terminals. The distribution system includes a box (10) having input terminals at least equal in number to the maximum number of output terminals necessary for the different types of vehicles. A reading device (12) is provided in the box (10) for reading vehicle specific data stored in a memory (11) that may be outside the box (10), for storing in advance the vehicle specific data for each type of vehicle. A controller (16) is provided in the box (10), and receives the vehicle specific data from the reading device (12), specifies which output terminals out of the plurality of output terminals are to be used and outputs a corresponding control signal.