Tamper-proof Retainer for Power Tool Battery Theft Prevention
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Solution Overview
Problem
Existing anti-theft systems for power tools do not effectively secure removable battery packs at retail displays, as they cannot be screwed into place without damaging the battery cells, making them susceptible to theft.
Innovation Solution
A tamper-proof retainer system that secures the battery pack to the power tool, using a latch mechanism and tamper-proof screws or covers to prevent removal, ensuring the battery pack remains attached and rendering theft attempts futile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a retaining item is screwed into the battery pack to secure it to the tool, then the battery pack can be securely retained to the tool, but the chemical composition of the battery cells is potentially destroyed
Solution Approach 1:
The retention system is divided into two separate components: a retainer attached to the tool and a corresponding feature on the battery pack. This segmentation allows the retainer to provide secure holding without requiring screws to be driven into the battery pack itself, thus preserving battery cell integrity while achieving strong retention.
Solution Approach 2:
A retainer acts as an intermediary element between the tool and the battery pack. The retainer is attached to the tool and engages with a corresponding feature on the battery pack, providing secure retention without directly contacting or damaging the battery cells. This intermediary approach allows force transmission while protecting the battery from mechanical damage.
2Adaptability or versatility
If the battery pack is made removable for independent re-charging, then the battery can be re-charged independently of the tool, but the battery pack becomes vulnerable to theft at retail displays
Solution Approach 1:
The retainer mechanism is designed to prevent the harmful action of theft before it can occur. By providing a secure retention system that requires deliberate action to overcome, the retainer creates a preliminary barrier against theft attempts at retail displays, while still allowing legitimate removal for re-charging when needed.
Solution Approach 2:
The retention system is designed to be dynamically controllable - secure during display conditions but removable under authorized conditions. The latch mechanism can be actuated by authorized users to remove the battery for re-charging, while remaining secure during normal operation and display, thus adapting to different usage scenarios.
3Ease of operation
If a latch mechanism is provided for releasing the battery, then the battery can be removed from the tool, but the latch may be actuated by unauthorized removal attempts
Solution Approach 1:
The latch mechanism is extracted from a simple removable design and integrated into a tamper-proof retention system. The latch is combined with a retainer that has additional security features, such as a cover that must be deliberately opened and a mechanism that requires specific actuation steps, making unauthorized removal difficult while maintaining ease of operation for authorized users.
Solution Approach 2:
The cover is positioned to overlie and engage with the latch in a preliminary state, preventing access to the latch mechanism. This preliminary protective action ensures that the latch cannot be actuated by unauthorized removal attempts, while authorized users can still access and operate the latch when needed through the proper sequence of actions.
Data Source
AI summary
An anti-theft system for securing a removable battery to a power tool. The system employs a tamper-proof retainer to ensure that the retail display of a combined power tool and its associated battery can be displayed as a single unit without fear of theft of the battery. This may be achieved by the tamper-proof retainer securing a battery release latch against its release position hence securing the battery to the tool in a manner preventing the removal of the battery by a potential thief. The tamper-proof retainer either prevents removal of the battery from the power tool, as removal of the tamper-proof retainer is impossible, or, if it is destroyed by a thief, then it permanently secures the battery to the power tool.