Detailed Introduction

This automotive junction housing series adopts two core high-temperature engineering plastics to satisfy heavy-load vehicle electrical distribution requirements.

LCP material delivers ultra-low thermal expansion and excellent thin-wall molding performance, used for tiny dense pin grid inner cores, preventing terminal position shift caused by long-term engine heat exposure. V0 flame-retardant glass-filled PBT provides superior structural rigidity, impact resistance and flame suppression capability, ideal for large open grid distribution frames and thick-wall mounting brackets that bear fuse heating and assembly mechanical stress.

The product lineup covers three structural types: open hollow multi-grid distribution frames for fuse & relay layout, fully enclosed dense multi-pin signal/power connector shells, and integrated mounting brackets with snap locking tabs. Every housing is built with interlocking grid partitions to isolate different circuit loops, plus fool-proof terminal positioning slots to eliminate misassembly. The thickened rib grid design enhances structural stability and avoids deformation under cyclic temperature changes. Optimized melt flow mold design solves filling shortage and warpage issues of large thin-grid plastic parts during high-temperature injection.

Complete Production Workflow

1. Custom precision mold core processing: 5-axis CNC rough & finish milling, micro sinker EDM for dense tiny pin holes and complex grid rib contours
2. Vacuum stress relief heat treatment for mold steel to stabilize large cavity dimensions under prolonged high-temperature injection cycles
3. Multi-stage mirror polishing to reduce melt adhesion of LCP/PBT flame-retardant plastic and guarantee smooth terminal insertion fit
4. Segmented temperature-controlled precision injection molding for large grid thin-wall components
5. Post-molding full 3D coordinate dimensional inspection, burr trimming, high-temperature thermal aging and flame retardancy safety testing

All finished junction housings pass thermal stability and vibration anti-loosening aging verification. Custom development is fully supported based on customer circuit layout drawings: grid quantity, pin density, wall thickness, plastic flame retardant grade and mounting structure can be adjusted according to circuit load, operating temperature and vehicle assembly specifications. The series serves passenger car body control distribution boxes and new energy auxiliary circuit junction modules.

Specification Table