Lock Transmission Mechanism With Fixed-Axis Rotation and Guided Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lock mechanisms require excessive effort to switch between locked and unlocked states due to the transmission element's axial movement, leading to reduced smoothness and increased operation resistance, and are prone to assembly errors when the transmission cam and tubular connecting element are misaligned.
Innovation Solution
A transmission mechanism where the transmission element is incapable of moving along the rotating axis, allowing the moving component to switch between engaging grooves to control the lock's state, reducing operation resistance and enhancing smoothness, and incorporating a design that avoids assembly errors by ensuring proper alignment of engaging parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transmission element is allowed to move along the rotating axis during operation, then the lock can switch between locked and unlocked states, but the operation resistance increases and smoothness decreases
Solution Approach 1:
The transmission mechanism is divided into two independent functional components: the transmission element that rotates about the axis, and the moving component that moves along the axis. This segmentation allows each component to perform its specific function without interfering with the other, eliminating the axial movement of the transmission element while maintaining the locking function.
Solution Approach 2:
The moving component acts as an intermediary between the rotating transmission element and the locking mechanism. It converts the rotational motion of the transmission element into axial movement itself, while the transmission element remains fixed in position. This intermediary function resolves the contradiction by decoupling the rotation function from the axial movement function.
2Ease of manufacture
If the transmission cam and tubular connecting element are not precisely aligned during assembly, then assembly is easier, but the lock becomes incapable of functioning normally
Solution Approach 1:
The engaging parts are designed with asymmetric shapes that provide a unique fit between the transmission cam and tubular connecting element. This asymmetric design creates a self-aligning mechanism where only the correct orientation allows the engaging parts to mesh properly, guiding the assembler to the correct alignment without requiring precise measurement or adjustment.
Solution Approach 2:
The engaging parts are designed to automatically guide the alignment of the transmission cam and tubular connecting element during assembly. The shape and positioning of these parts create a self-correcting mechanism that ensures proper alignment without external intervention, making the assembly process both easy and reliable.
Data Source
AI summary
A transmission mechanism applied to a lock and for controlling the lock to switch between an unlocked state and a locked state. The lock includes a first handle set including a first cover plate which includes a first fitting portion. The transmission mechanism includes a transmission element and a moving component. The transmission element is connected to the first handle set in a manner that the transmission element is incapable of moving along a rotating axis and has an abutting portion. The moving component is disposed on the transmission element in a manner that the moving component is capable of moving along the rotating axis and includes a first engaging groove, a second engaging groove and a second fitting portion. When the transmission element is operated to rotate, the abutting portion is capable of switching between the first engaging groove and the second engaging groove.