Braided Rubber Hose Structure for Vibration and Pressure Sealing

The reinforcement structure is divided into multiple braided layers (first braided layer, second braided layer, and third braided layer) with different yarn materials and configurations. Each layer contributes differently: the first layer provides vibration resistance, while subsequent layers enhance sealing pressure and burst pressure, resolving the contradiction by segmenting the reinforcement function across multiple specialized layers.

The invention uses composite material construction with different yarn types (dry vinylon, wet vinylon, and other synthetic fibers) in different braided layers. This composite approach allows each material to contribute its optimal properties: dry vinylon for vibration resistance and other materials for enhanced sealing and burst pressure performance, thereby resolving the technical contradiction.

Different braided layers are assigned different yarn materials with varying modulus characteristics. The first braided layer uses dry vinylon with specific modulus for controlled expansion, while other layers use materials optimized for flexibility. This local differentiation of material properties allows the hose to achieve both low expansion and flexibility by having different zones with different mechanical characteristics.

The invention optimizes the young modulus parameter of yarn materials within specific ranges (e.g., dry vinylon with young modulus of 17-26 GPa) to achieve the right balance between expansion resistance and flexibility. By carefully controlling material parameters rather than using extreme values, the hose achieves both low expansion property and adequate flexibility.