Spindle Lid Locking Device with Sliding Unlocking Knobs
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Solution Overview
Problem
Conventional locking devices for portable electronic devices, such as battery housing units, are prone to careless opening due to easy disengagement under shock or vibration, leading to battery drop-off and inoperability, especially during strenuous movements.
Innovation Solution
A locking device that combines sliding operations of a pair of unlocking knobs with the entire opening and closing lid, utilizing a spindle and sliding mechanism with orthogonal relationships, and energized by a spring, featuring protrusions for easy operation and a prism-shaped protrusion configuration to secure the lid in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple lock claw and engagement hole configuration is used, then the device complexity is reduced and ease of operation is improved, but the reliability of the locking mechanism deteriorates due to easy disengagement under shock or vibration
Solution Approach 1:
The lock lever is designed to slide dynamically between locked and unlocked positions along the sliding groove, allowing the locking mechanism to transition smoothly between states while maintaining stability during operation
Solution Approach 2:
The locking mechanism is divided into separate functional components: the lock lever with lock claw for engagement, the release knob for actuation, and the coil spring for maintaining locked state, allowing each component to perform its specific function independently
2Reliability
If a coil spring is added to hold the locked state, then the reliability of the locking mechanism is improved, but the device complexity increases
Solution Approach 1:
The coil spring automatically maintains the lock lever in the locked position without requiring external intervention, and the release knob provides a simple manual actuation mechanism that the user operates to unlock, making the system self-maintaining while keeping the user interface simple
3Ease of manufacture
If the lock lever is energized in one direction only, then the manufacturing precision requirements are reduced and ease of manufacture is improved, but the reliability deteriorates due to inability to resist forces from multiple directions
Solution Approach 1:
The sliding groove is designed with specific geometric parameters and orientations that allow the lock claw to engage with the engagement hole while accommodating forces from multiple directions, changing the spatial parameters of the engagement interface to improve multi-directional resistance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents careless opening of the lid, enhances operability for locking and unlocking, and maintains the battery securely in place during use, reducing the risk of battery drop-off.
Implementation Method 1
a coil spring for holding the locked state is provided to the lock lever
Data Source
AI summary
A main body case is provided with an opening and closing lid supported in an openable and closable manner by a spindle at one end portion thereof as well as slidably attached in a direction orthogonal to a length direction of the spindle; a pair of unlocking knobs slidably arranged along a front surface of the opening and closing lid; and a locking portion formed on a main body case side that puts the opening and closing lid in a locked state by locking a step portion on a free end portion side of the opening and closing lid by sliding operating the opening and closing lid in one direction in a state where the opening and closing lid is closed.