Circular Saw Handle Hook for Stable Hanging Alignment
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Solution Overview
Problem
Hand-held circular saws lack a secure and stable hanging mechanism, leading to potential unintentional dropping during use or storage.
Innovation Solution
A hanging device with a pivotable hook element and rotation axis portion aligned parallel to the center of gravity plane, allowing for safe and stable hanging, featuring a locking mechanism and adjustable angle for easy alignment and secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hanging device is added to the hand-held circular saw, then the reliability of hanging and prevention of unintentional dropping is improved, but the device complexity increases
Solution Approach 1:
The hanging device is integrated into the handle structure of the hand-held circular saw. The rotation axis portion is mounted directly on the handle, and the hook element is combined with the handle body, creating a unified structure that provides hanging functionality without adding separate complex components.
Solution Approach 2:
The hook element is designed to be rotatable about the rotation axis portion, allowing it to pivot between different positions. This dynamic feature enables the hook to be adjusted to align with the center of gravity plane for stable hanging, while also allowing it to move out of the way during operation, thus providing reliability without permanent structural complexity.
2Ease of operation
If the hook element is made rotatable to align with center of gravity plane, then the ease of operation for alignment is improved, but the device complexity increases
Solution Approach 1:
The hook element is designed to be rotatable about the rotation axis portion, allowing it to pivot between different positions. This dynamic feature enables the hook to be adjusted to align with the center of gravity plane for stable hanging, while also allowing it to move out of the way during operation, thus providing reliability without permanent structural complexity.
Solution Approach 2:
The rotatable hook element can be manually positioned by the user through simple rotation about the rotation axis portion. The design allows the user to easily align the hook with the center of gravity plane without requiring complex adjustment mechanisms, motors, or electronic controls, thus maintaining ease of operation with minimal added complexity.
3Reliability
If the rotation axis portion is locked in locking position, then the reliability of secure fastening is improved, but the ease of operation for adjustment is worsened
Solution Approach 1:
The rotation axis portion is designed to be rotatable during adjustment but lockable during hanging. The locking mechanism engages the rotation axis portion with the handle in a locking position to prevent unintended rotation, while still allowing deliberate rotation when needed for alignment or removal.
Solution Approach 2:
The locking mechanism is designed to automatically engage the rotation axis portion in a predetermined locking position. This preliminary action of automatic locking eliminates the need for continuous manual holding or complex locking procedures, providing secure fastening with minimal operational complexity.
Data Source
AI summary
A hand-held circular saw includes a housing in which a drive motor for rotatably driving a circular saw blade is disposed, and also includes a handle which is disposed on the housing and on which a hanging device having a rotation axis portion and a hook element is disposed. The hook element is disposed perpendicular to the rotation axis portion. The rotation axis portion forms an axis of rotation and is rotatably mounted on the housing. The hook element can pivot about the axis of rotation in an associated plane. The associated plane is aligned parallel to a center of gravity plane of the hand-held circular saw.