Battery Latch Assembly With Roller Release for High-Friction Removal

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Solution Overview

Problem

Existing power equipment batteries are difficult to remove, especially in high friction situations, which is undesirable.

Innovation Solution

A latch assembly with a lever and roller mechanism that facilitates easy engagement and disengagement of the battery with the battery housing, utilizing a pivoting lever and rotatable roller to secure and release the battery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional latch mechanism is used to secure the battery, then the battery is firmly held in the battery housing, but it becomes difficult to remove the battery especially in high friction situations

Engineering Contradiction:
Improvebattery securing reliabilityVSAvoidbattery removal ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The latch mechanism incorporates a roller element that contacts the battery to provide a curved rolling interface instead of a flat sliding contact. This curvature reduces friction during battery removal while maintaining secure engagement when the battery is installed, directly resolving the contradiction between reliable securing and easy removal.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The latch system transitions from a static friction-based holding mechanism to a dynamic rolling mechanism. The roller can rotate to facilitate battery removal while the lever provides dynamic control over engagement and disengagement states, allowing the system to adapt between secure holding and easy release modes.

Inventive Principle:
Principle #15Dynamics

2Reliability

If a secure latch mechanism is implemented to hold the battery firmly, then the battery remains stable during operation, but the complexity of the latch assembly increases

Engineering Contradiction:
Improvebattery stability during operationVSAvoidlatch assembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The latch assembly merges multiple functions into a single integrated mechanism: the lever provides both the locking and releasing actions, while the roller simultaneously provides both secure engagement and low-friction removal capability. This consolidation achieves reliable battery stability without excessive complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The roller acts as an intermediary element between the latch button and the battery. It mediates the interaction by providing a rolling contact surface that reduces friction, allowing the simple lever mechanism to achieve both secure holding and easy removal without requiring complex multi-component systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables easy and efficient removal of batteries from power equipment, reducing friction and improving user convenience.

Implementation Method 1

a lever configured to pivot about a fulcrum

Methodology Applied
Scientific EffectLever: Lever

Implementation Method 2

a roller rotatably engaged to the latch button and adapted to be removably engaged with the battery

Methodology Applied
Scientific EffectRolling friction: Roller

Data Source

PatentUS20250268134A1Latch assembly for securing battery inside battery housing of power equipment
Publication Date: 2025.08.28 HONDA MOTOR CO LTD
  • US20250268134A1 patent drawing
  • US20250268134A1 patent drawing
  • US20250268134A1 patent drawing

AI summary

A latch assembly for a power equipment includes a lever configured to pivot about a fulcrum, a latch button coupled to the lever and configured to move vertically in response to the pivoting of the lever about the fulcrum, and a roller rotatably engaged to the latch button and adapted to be removably engaged with a battery of the power equipment to removably secure the battery inside a battery housing of the power equipment.