Box Closure Assembly With Integrated Locking Puller for Heavy Loads

The patent combines multiple functions into a single integrated handle structure that incorporates the latch mechanism, eliminating the need for separate small components. The handle itself becomes the locking element through its pivotal movement and engagement with the box body, simplifying the overall device while maintaining reliability.

The handle serves multiple functions: it acts as both the closing mechanism and the locking element. By designing the handle to pivot and engage with corresponding structures on the box body, it simultaneously performs the dual role of closing and securing the box, reducing the need for additional specialized components.

The patent removes complex intermediate components and elastic elements from the latch mechanism. Instead, it relies on the rigid structural engagement between the handle and box body, using the handle's pivotal movement and geometric constraints to maintain closure under extreme conditions without requiring additional expensive components.

Rather than using elastic elements to force closure, the patent inverts the approach by designing a rigid mechanical engagement system where the handle's geometry and pivotal movement inherently maintain the closed position through mechanical advantage and structural interlocking.

The handle is pre-configured in its pivotal position and geometric orientation to automatically align with the locking engagement points on the box body. This preliminary positioning ensures that when the user closes the box, the locking action occurs automatically without requiring additional manual steps or attention.

The latch mechanism is designed to automatically engage and lock when the box is closed, without requiring user intervention beyond the closing motion itself. The handle's pivotal movement and geometric constraints cause the locking engagement to occur automatically, making the system self-securing.

The handle's pivotal path and engagement geometry are designed asymmetrically so that the handle's movement trajectory does not intersect with the closing path of the box lid. This asymmetric configuration ensures that the handle cannot block the closure motion while still allowing smooth pivotal movement for operation.

The patent positions the handle's rotation axis and engagement points in different spatial dimensions, ensuring that the handle's pivotal movement occurs in a plane that does not interfere with the vertical closing motion of the box lid, eliminating the blocking issue.