Battery Locking Guide With Break For Safety Position
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Solution Overview
Problem
Existing locking devices for cordless power tools and battery packs fail to prevent accidental detachment of the battery pack during tilting or incorrect handling, leading to potential damage or injury.
Innovation Solution
A locking device with a guide featuring a break between the locking and removal positions, where a force, either gravitational or spring-induced, deflects the accessory part into a safety position, preventing further movement towards the removal position until manually disengaged, ensuring secure attachment even when the user is not holding it correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a linear guide with latch mechanism is used to lock the battery pack to the power tool, then the battery pack can be securely locked in position and electrical connection established, but the battery pack may unintentionally detach when the guide is tilted downward and the release mechanism is actuated without proper user holding
Solution Approach 1:
A safety element is introduced as an intermediary component between the battery pack and the guide. This safety element engages with a break in the guide to prevent the battery pack from moving into the removal position, thereby mediating the interaction between the locking mechanism and the potential detachment hazard
Solution Approach 2:
The guide is segmented with a break (discontinuity) at a specific location. This segmentation creates a physical interruption that, when engaged by the safety element, divides the continuous movement path into distinct zones: a safe locked zone and a prohibited removal zone, preventing accidental detachment
2Reliability
If a two-stage locking mechanism is used to prevent unintentional detachment, then the battery pack is secured in relation to the power tool, but it cannot reliably prevent the battery pack from falling out when the guide is tilted downward and the release mechanism is actuated without proper user holding
Solution Approach 1:
The safety element acts as an intermediary that overrides the limitations of the two-stage locking mechanism. By engaging with the break in the guide, it creates an additional safety layer that prevents the battery pack from falling out during tilted operation, even when the release mechanism is actuated
Solution Approach 2:
The safety element provides preliminary anti-action by preemptively blocking the removal path before accidental detachment can occur. The break in the guide and the safety element's engagement create a preliminary barrier that counteracts the harmful effect of tilted operation and inadvertent release mechanism actuation
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 uncontrollable dropping of the battery pack from the guide when tilted or during incorrect handling, ensuring secure attachment and safe operation by maintaining the battery pack in a locked position until manually released.
Implementation Method 1
a spring-loaded latch brings it into engagement with two detent recesses provided in the battery pack
Implementation Method 2
the guide is simultaneously pointing obliquely downward from the locking position, then even a two-stage locking mechanism is unable to reliably prevent the battery pack from falling out
Data Source
AI summary
A device for locking, an electrical device to an accessory part has a guide configured to guide the accessory part in a predetermined movement direction as it moves between a locking position in which it is locked the electrical device and a removal position in which it is removed from the electrical device, the guide having a break in at least one location between the locking position and removal position, and at the location a force acting on the accessory part moves the accessory part into a safety position in which the accessory part is prevented from moving further along the guide into the removal position.