Battery Chain Saw Endo-Skeletal Sub-Frame Assembly
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Solution Overview
Problem
The transition to battery-operated chain saws poses challenges due to the exo-skeletal design's limitations in structural rigidity, assembly complexity, and aesthetic flexibility, which can lead to manufacturing inefficiencies and increased volume, making it difficult to adapt existing facilities and practices from fuel-operated models.
Innovation Solution
The method involves constructing a chain saw using an endo-skeletal sub-frame assembly with mount locations for operating components, allowing for interchangeable outer housing assemblies to alter size, shape, and appearance, while maintaining the battery-operated motor's independence from the outer housing for easier maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an exo-skeletal design with outer housing is used, then aesthetic flexibility and design variety are improved, but structural rigidity and manufacturing efficiency deteriorate
Solution Approach 1:
The chain saw is divided into distinct modules: an endo-skeletal sub-frame assembly providing structural rigidity, and interchangeable outer housing assemblies providing aesthetic flexibility. This segmentation allows each component to fulfill its specific function optimally without compromise.
Solution Approach 2:
The outer housing assembly is extracted as a separate, interchangeable component from the main structure. This allows the structural sub-frame to maintain rigidity while the removable housing provides design variety and aesthetic customization without affecting structural integrity.
2Ease of manufacture
If an exo-skeletal design with predetermined housing shape is used, then manufacturing simplicity is improved, but adaptability to different operating features deteriorates
Solution Approach 1:
The endo-skeletal sub-frame assembly serves as a universal base that can accommodate multiple different outer housing assemblies and operating components. This universal structure enables the same core platform to be adapted for various operating features while maintaining manufacturing efficiency through component standardization.
Solution Approach 2:
The design transitions from a static, fixed housing configuration to a dynamic system where outer housing assemblies can be interchanged based on desired operating features. This dynamic approach allows the product to adapt to different functions while maintaining a consistent structural foundation.
3Volume of moving object
If battery operated motor is integrated with outer housing, then compactness is improved, but ease of maintenance deteriorates
Solution Approach 1:
The battery operated motor is integrated with the endo-skeletal sub-frame assembly rather than the outer housing, creating a functional module that remains accessible when the housing is removed. This segmentation maintains compact overall dimensions while enabling easy maintenance through modular separation.
Solution Approach 2:
The outer housing assembly acts as an intermediary component that can be easily removed to provide access to the motor and other operating components. This intermediary structure allows the motor to be protected and integrated into the compact design while remaining accessible for maintenance through simple housing removal.
4Productivity
If existing fuel-operated manufacturing facilities are adapted for battery-operated production, then transition efficiency is improved, but facility redesign requirements worsen
Solution Approach 1:
Instead of redesigning facilities to accommodate entirely new battery-operated manufacturing processes, the invention maintains the traditional endo-skeletal construction methodology used in fuel-operated chain saws. This inversion of the typical transition approach allows existing facilities to continue producing battery-operated chain saws using proven manufacturing techniques, minimizing facility redesign requirements.
Solution Approach 2:
The endo-skeletal sub-frame assembly uses construction methods and materials similar to traditional fuel-operated chain saws, creating homogeneity in the manufacturing process. This similarity allows existing facilities to produce battery-operated models with minimal adaptation, as the core structural manufacturing remains unchanged.
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
This approach enables the creation of a more rigid and versatile battery-operated chain saw with reduced assembly complexity, allowing for easier maintenance and adaptation of existing manufacturing lines, while offering flexibility in design and appearance.
Implementation Method 1
a battery operated motor
Data Source
AI summary
A chain saw unit and a method of constructing the same. The method includes the steps of obtaining: a) an endo-skeletal sub-frame assembly defining a plurality of mount locations; b) a plurality of operating components; and c) an outer housing assembly; directing one of the operating components laterally into an operative position at one of the mount locations at one of the sides of the endo-skeletal sub-frame assembly; placing at least one additional operating component into an operative position to define a main operating unit; and after directing the one of the operating components into its operative position, placing at least a part of the outer housing assembly in an operative position with respect to the endo-skeletal sub-frame assembly wherein the at least part of the outer housing assembly overlies part of the exposed surface area of the main operating unit and blocks access to the operatively positioned one component from the one side of the endo-skeletal sub-frame assembly.