Chain Lock Slot Geometry to Prevent Jamming During Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chain locks can become stuck in their locking structures due to improper operation, making them inconvenient to use.
Innovation Solution
A chain lock design featuring a lock body with a cylindrical seat and a rotating lock core, incorporating a first and second slot of varying widths in the axial direction, and a bolt with a circular groove, allowing for smooth insertion and locking/unlocking through controlled rotation of the lock core and seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chain is inserted into the lock body, then the locking function is achieved, but the chain may get stuck in the locking structure making operation difficult
Solution Approach 1:
The insertion portion is divided into two slots with different widths: a first slot for initial chain insertion and a second slot for the locking state. This segmentation allows the chain to pass through easily in the first slot while being securely retained in the second slot, preventing it from getting stuck.
Solution Approach 2:
Different regions of the insertion portion have different width characteristics. The first slot has a greater width to facilitate easy insertion, while the second slot has a smaller width to provide secure retention. This local variation in geometric properties solves the contradiction between easy insertion and secure locking.
2Reliability
If the locking structure is designed to securely hold the chain, then security is improved, but the chain becomes difficult to insert or remove
Solution Approach 1:
The lock core rotates to dynamically change the alignment between the first and second slots. During insertion, the slots are aligned to guide the chain in. During locking, the lock core rotates to misalign the slots, securing the chain in the second slot. This dynamic adjustment allows both easy insertion and secure retention.
Solution Approach 2:
The first slot is designed with greater width beforehand to facilitate easy chain insertion. The actuating element is pre-positioned to control the lock core rotation. This preliminary design ensures that the chain can be easily inserted before the locking action occurs.
Data Source
AI summary
A chain lock comprises a lock body with a cylindrical shape and a chain connected to the lock body at one end and to a bolt at the other end. The lock body has two shells, with the second shell sleeved within the first shell. Inside the second shell, there is a lock core, a lock seat, and an installation seat. The lock seat and the chain are connected at opposite ends of the installation seat. An actuating element connects the lock core and the lock seat, allowing them to rotate simultaneously. The side wall of the lock seat features an insertion portion for inserting the bolt comprising a first slot and a second slot, wherein the width of the first slot is greater than the width of the second slot.