Power Tool Battery Ejection Mechanism for One-Handed Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power tools require two hands to eject the battery pack, which can be inconvenient and inefficient.
Innovation Solution
A battery ejection mechanism that allows for single-handed operation, using a rotary actuator, linear actuator, rotatable switch, push-switch, or lever conveniently located on the power tool handle, enabling the user to eject the battery pack with one finger while holding the tool with the same hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional two-handed battery ejection mechanism is used, then the battery pack can be securely held and ejected, but the operation requires two hands which reduces efficiency and convenience
Solution Approach 1:
The release mechanism is designed to be self-actuating through a spring-loaded latch system. When the battery pack is inserted, the latch automatically engages with the battery retention features without requiring manual intervention. The system serves itself by using the insertion motion to trigger the locking action, eliminating the need for separate locking操作步骤
Solution Approach 2:
The ejection mechanism uses a dynamic spring-loaded latch that transitions between locked and unlocked states. The spring provides continuous force to maintain the latch in either engaged or disengaged position, allowing rapid transition between states. This dynamic system enables quick one-handed ejection by simply pressing the release button, which overcomes the spring force and triggers instantaneous battery release
2Ease of operation
If a simple release mechanism is used, then one-handed operation is enabled, but the reliability of battery retention may be compromised
Solution Approach 1:
The latch mechanism features localized engagement points on the battery pack housing. The latch has specific protrusions that fit into corresponding recesses on the battery pack, creating concentrated high-strength mechanical interlocking at critical locations. This localized quality ensures reliable retention through precise geometric matching at the engagement interface
Solution Approach 2:
The release mechanism combines multiple functions into a single integrated assembly. The latch simultaneously performs battery retention, release actuation, and positional indication functions. The spring-loaded mechanism merges the locking and unlocking actions into one continuous motion, while the single release button integrates the control function, achieving multi-functionality in a compact design
3Extent of automation
If a rotary actuator or linear actuator is used, then automated battery ejection is achieved, but the device complexity increases
Solution Approach 1:
The patent replaces complex rotary actuators or linear actuators with a simple spring-loaded mechanical latch system. Instead of using motorized components with multiple moving parts, control circuits, and power requirements, the invention uses pure mechanical spring force and geometric interlocking. This substitution achieves automated battery ejection through passive mechanical means, eliminating the need for active actuators while reducing overall system complexity
Data Source
AI summary
Devices and mechanisms are disclosed for a simple ejection of the battery-pack from a power-tool with one hand only. The disclosed lock and release mechanisms primarily use one finger while the same hand of the user holds the power-tool. The claimed devices and mechanisms accept and eject two categories of batteries that either slideably attach to the bottom of the power-tool or are inserted into the handle of the power-tool.