Openable Seat Belt Guide Ring for Secure Child Seat Installation

The patent applies the dynamics principle by transforming the fixed closed ring structure into an openable ring with a gate portion that can transition between closed and open states. The gate portion is hinged to the ring body, allowing it to swing open for installation/removal and swing closed for secure guidance during use. This dynamic transformation resolves the contradiction by providing both accessibility during installation and security during occupancy.

The patent applies local quality by differentiating the flexibility characteristics of different parts of the gate portion. The gate portion includes a first section with higher flexibility for easy opening and a second section with greater rigidity for structural stability. This localized differentiation of mechanical properties allows the gate to be easily opened during installation while maintaining sufficient strength and stability during accidents.

The patent applies preliminary action by providing a lead face on the receiver that guides the seat belt edge toward the aperture before the belt enters the ring. This preliminary guidance action ensures that the seat belt is properly aligned and directed into the ring during insertion, preventing misalignment or escape during subsequent use while maintaining ease of installation.

The patent applies self-service by designing the latch mechanism to be automatically engaged and locked through the natural insertion motion of the connector into the receiver, without requiring additional manual locking actions. The spring-loaded receiver and complementary geometries of the connector and receiver create a self-latching system that secures the ring during accidents but can be easily opened by applying manual force to the gate portion, resolving the contradiction between security and ease of operation.