Dual-latch lock for rodent bait station
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing loadable pest-control devices, such as rodent bait stations, face challenges in securing the lock mechanism effectively to prevent unauthorized access and ensure reliable operation over multiple loading cycles.
Innovation Solution
The design incorporates a dual-latch lock system with laterally opposed ledge portions and a post, where the second lock portion engages the first with upward-facing latch surfaces contacting downward-facing surfaces to resist separation, and a key mechanism that allows sequential locking and unlocking with specific rotational increments, ensuring secure closure and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single latch lock mechanism is used, then the device complexity is reduced, but the reliability of securing the bait station is insufficient
Solution Approach 1:
The lock mechanism is divided into two separate latch members (first latch member and second latch member) that operate independently but work together to secure the bait station. Each latch member engages with its own ledge portion, providing redundant security while maintaining manageable complexity through modular design
Solution Approach 2:
The dual latch members are integrated within a single lock body structure, with both latches nested within the same housing and operating mechanism. This allows the complex dual-latch system to be compact and integrated rather than bulky and dispersed
2Reliability
If the lock mechanism is made more secure with additional latches, then the reliability improves, but the ease of operation deteriorates
Solution Approach 1:
Both latch members are controlled by a single key insertion and rotation action. The key simultaneously actuates both latches through shared mechanical linkages, allowing the user to secure or open both latches with one motion rather than requiring separate operations for each latch
Solution Approach 2:
The latch members are designed with spring-loaded or pre-loaded mechanisms that automatically engage with the ledge portions when the door is closed and the key is removed. This preliminary engagement ensures security is maintained without requiring continuous user intervention or complex manual operations
3Reliability
If the latch surfaces are made larger to improve engagement, then the reliability improves, but the device dimensions increase
Solution Approach 1:
The latch surfaces are designed with concentrated contact areas featuring ledges and engagement surfaces optimized for localized high-strength interaction. Rather than distributing the engagement area broadly, the design focuses mechanical contact at specific critical points (the ledges) to maximize engagement reliability within minimal space
Solution Approach 2:
The latch mechanism utilizes vertical engagement surfaces (upward-facing and downward-facing surfaces) rather than only horizontal contact areas. This vertical dimension allows the latches to engage deeply with the ledges, providing robust mechanical interlocking without requiring large lateral footprint
Data Source
AI summary
Locks for use with pest-control devices such as bait stations or other loadable devices, kits that include a lock and key, and pest control devices that include a lock.