CN206005043U - A kind of fuse box comprising busbar and PCB layer stack structure - Google Patents

Abstract

The utility model is related to a kind of fuse box comprising busbar and PCB layer stack structure, belongs to car electrics parts technical field.Including upper shell and lower house, the upper shell top surface is provided with the quick detachable component comprising multiple fuses, PCB, insulating barrier, multi-disc busbar are sequentially provided with from top to bottom in the upper shell and lower casing body,, between the upper and lower every setting is supported, the multi-disc busbar is fixed on insulating barrier for the PCB, insulating barrier.The utility model multi-disc busbar is fixed on insulating barrier, forms the current capacity of structure stacked on top of one another dilatation significantly fuse box home loop with PCB loop, while reducing the current capacity on PCB, reduces the design difficulty of PCB.

Description

A fuse box including a bus bar and a PCB laminated structure

technical field

The utility model relates to the technical field of automobile electrical components, in particular to a fuse box including a bus bar and a PCB stacked structure.

Background technique

The fuse box (or power distribution box, central electrical box) is the basic carrier of automotive power distribution and circuit protection, and is the center of the electrical circuit of the vehicle. The design of the fuse box is faced with more and more issues such as circuit safety, internal temperature rise control, increasing functions and reserve requirements for the number of circuits, limited layout space, cost and development cycle pressure, etc., the internal current carrying capacity of the fuse box Circuit type and structure are joint design elements that need to be managed to solve the above problems. At present, most automotive fuse boxes use in-line terminal crimping wires or PCBs as the current carrying type, but some bus bars may be used locally at the incoming power supply. These structural forms often face geometric boundaries, circuit current carrying capacity, and fuses in the design. / Problem with limited number of relay resources.

Utility model content

The purpose of the utility model is to provide a fuse box including a bus bar and a PCB laminated structure for the defects of the prior art.

The technical solution adopted by the utility model is: comprising an upper shell and a lower shell, the top surface of the upper shell is provided with an easy-to-detach assembly containing a plurality of fuses, and the upper shell and the lower shell are sequentially arranged from top to bottom. A PCB, an insulating partition, and a plurality of bus bars are provided, and the PCB and the insulating partition are supported at intervals up and down, and the multi-piece bus bars are fixed on the insulating partition through hot riveting solder joints and elastic clips.

In a further preferred structure, a high-power circuit is arranged on the bus bar, one end of the bus bar passes through the PCB, and is connected to a relay or a fuse through a transition terminal, and the other end passes through the lower housing to connect with the external wiring harness.

In a further preferred structure, the control and signal loops and some power loops are arranged on the PCB, the PCB is wired on both sides, the front welding terminals are connected to fuses or relays, and the back welding terminals are connected to external wiring harnesses.

In a further preferred structure, the multiple pieces of bus bars are fixed on the insulating partition plate through hot riveting joints and elastic clips.

In a further preferred structure, the PCB is provided with via holes for the bus bars and transition terminals of the lower layer to pass through.

In a further preferred structure, the easily detachable assembly includes multiple MINI type relays, multiple MICRO type relays, multiple ULTRAMICRO type relays, multiple MINI type fuses, multiple JCASE type fuses, MIDI type fuses, and fuse clips.

In a further preferred structure, the bus bar includes 22 pieces.

The multi-piece bus bar of the utility model is fixed on the insulating partition, and forms an upper and lower layered structure with the PCB circuit, which separates the large current circuit from the traditional PCB circuit, greatly expands the current carrying capacity of the internal circuit of the fuse box, and at the same time reduces The current load on the PCB is reduced, and the design difficulty of the PCB is reduced; in addition, because the stacked structure of the bus bar and the PCB retains the compactness of the internal structure of the fuse box, the utility model has a smaller structure compared with the plug-in fuse box. geometric boundaries. The proposal of the utility model has the advantages of compact structure, high current carrying capacity and good electromagnetic compatibility.

Description of drawings

Figure 1 is an exploded view of the structure of the fuse box;

Figure 2 is the matching diagram of the bus bar and insulating partition assembly;

Fig. 3 is a schematic diagram of the structure of the supporting ribs supporting the tail end of the bus bar by the lower case.

In the figure, 1-Easily disassembled components, 2-Upper housing, 3-PCB, 4-Insulation partition, 5-Bus bar, 6-Lower housing (6.1-Support rib), 7-Hot riveting solder joints, 8 - Elastic card.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Figure 1, the utility model includes an easy-to-detach assembly 1, an upper case 2, a PCB 3 and terminals, an insulating partition 4, a bus bar 5, and a lower case 6; the easily-detachable assembly 1 includes: 5 MINI-type Relay, 5 MICRO type relays, 2 ULTRAMICRO type relays, 23 MINI type fuses, 8 JCASE type fuses, 1 MIDI type fuse, 1 fuse clip; PCB 3 and terminals, insulation partition 4, bus bar 5 is included and fixed inside the upper casing 2 and the lower casing 6.

The internal circuits of the fuse box are concentrated on the PCB 3 and the bus bar 5 . The control and signal loops and some power loops are concentrated on the PCB, double-sided wiring, the front soldering terminals are connected to fuses and relays, and the rear soldering terminals are connected to the external wiring harness. In addition, via holes are arranged on the PCB for the lower bus bar 5 and the transition terminal through.

As shown in Figure 2, under the PCB 3 is an insulating partition 4, 22 bus bars 5 and the insulating partition 4 are fixed together by hot riveting solder joints 7 and elastic clips 8, and the bus bars 5 carry the large fuse box. For some high-power circuits, the end of the bus bar 5 conforms to the standard terminal size specifications, one end passes through the PCB, and is connected to the relay/fuse through the transition terminal, and the other end passes through the lower casing 6 to connect with the external wiring harness; the insulating partition 4 has steps and The positioning structure, on the one hand, ensures the accurate positioning of the X/Y direction between the partition and the PCB, so that the bus bar can easily pass through the via holes on the PCB during assembly, and on the other hand, ensures an accurate and sufficient Z-direction gap between the partition and the PCB , so that the terminal fits in the same plane, and there is sufficient heat dissipation space and safety clearance between the partition and the PCB.

As shown in Figure 3, the support rib 6.1 structure is provided on the plane where the lower housing 6 and the end of the bus bar 5 are attached, which supports and restrains the tail end of the bus bar 5, so that the bus bar 5 and the insulating partition 4 The connector is more stable when it is plugged and unplugged, and is resistant to vibration and impact, and the electrical connection between the bus bar 5 and the butt terminal of the wire harness is more stable.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (7)

1. A fuse box comprising a bus bar and a PCB laminated structure, comprising an upper case and a lower case, the upper surface of the upper case is provided with an easily detachable assembly comprising a plurality of fuses, wherein the upper case The body and the lower housing are sequentially provided with a PCB, an insulating partition, and multiple bus bars from top to bottom. The PCB and the insulating partition are supported at intervals from top to bottom, and the multiple bus bars are fixed on the insulating partition. 2. A fuse box comprising a bus bar and a laminated PCB structure according to claim 1, wherein a high-power circuit is arranged on the bus bar, and one end of the bus bar passes through the PCB, passes through the transition terminal and The relay or fuse is connected, and the other end passes through the lower case to connect with the external wiring harness. 3. A fuse box comprising a bus bar and a PCB stacked structure according to claim 1, wherein control and signal loops and part of the power loop are arranged on the PCB, the PCB is double-sidedly wired, and the front side is soldered to the terminal Connect with a fuse or relay, and solder the terminals on the back to connect with the external wiring harness. 4 . The fuse box comprising a bus bar and a PCB stacked structure according to claim 1 , wherein the multi-piece bus bars are fixed on the insulating partition board by heat riveting joints and elastic clips. 5 . The fuse box comprising a bus bar and a laminated PCB structure according to claim 1 , wherein a via hole is opened on the PCB for the lower bus bar and the transition terminal to pass through. 5 . 6. A fuse box comprising a bus bar and a PCB stacked structure according to claim 1, wherein the easily detachable assembly comprises a plurality of MINI type relays, a plurality of MICRO type relays, a plurality of ULTRAMICRO type relays, Multiple MINI type fuses, multiple JCASE type fuses, MIDI type fuses, fuse clips. 7. A fuse box comprising a bus bar and a PCB stacked structure according to claim 1, wherein the bus bar comprises 22 pieces.