Secondary Shielding Shell Prevents Soldering Leg Splaying

The patent extends the shielding shell from a simple U-shape (two side walls) to a three-dimensional enclosure by adding a top wall and rear wall. This dimensional expansion creates a closed or partially closed structure that restrains the soldering legs from splaying in multiple directions, thereby improving manufacturing precision without significantly complicating the fabrication process.

The shielding shell is divided into distinct functional segments: side walls for basic enclosure, top wall for preventing upward splaying, and rear wall for preventing backward splaying. Each segment addresses specific splaying directions, allowing the structure to maintain simplicity while effectively controlling soldering leg alignment through targeted geometric constraints.

The top wall and rear wall are designed to preliminarily constrain the soldering legs in their correct positions before the soldering operation begins. This pre-positioning prevents splaying during the soldering process, ensuring that when the soldering iron contacts the legs, they remain accurately aligned, thereby maintaining both accessibility and precision.

The top wall and rear wall act as intermediary structures between the soldering legs and the external environment. These walls provide physical guidance and restraint, mediating the interaction between the soldering process and the legs to prevent unwanted movement while allowing the soldering operation to proceed effectively.