Self-locking slide rail device with buffer mechanism

The patent combines the buffer mechanism with the self-locking mechanism into a single integrated structure. The buffer arm serves dual purposes: it provides buffer function when engaged with the buffer stop, and simultaneously acts as the locking component that engages with the locking groove. This merging eliminates the need for separate buffer and locking components, reducing structural complexity while maintaining both functions.

The buffer arm is designed as a multi-functional component that performs both buffering and self-locking operations. When the inner rail is pulled outward, the buffer arm engages with the buffer stop to provide cushioning. When the inner rail is pushed inward, the same buffer arm engages with the locking groove to provide self-locking. This universal design reduces the number of parts while ensuring both functions are achieved.

The patent converts the harmful vibration and shaking into a beneficial self-locking action. When vibration causes the inner rail to shake inward, the buffer arm is pushed against the locking groove, automatically engaging the self-locking mechanism. The harmful vibration is thus transformed into the force that secures the rail in position, ensuring stable operation despite vibrational conditions.

The locking groove is pre-positioned and shaped to receive the buffer arm under vibrational conditions. The geometry of the locking groove and buffer arm is designed in advance to ensure that when vibration occurs, the components will naturally engage in the correct meshing position, preventing displacement before it can cause malfunction.