Palm Spanner with Pivotally Nested Driving Head
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Solution Overview
Problem
Conventional spanners are large and cumbersome, making them difficult to carry conveniently, and existing designs with stop surfaces restrict the operation of the tool head.
Innovation Solution
A palm type spanner with a driving head that can be received into a handle body for compact size, featuring a pivotally installed driving head with a receiving portion and a hollowed groove, allowing the head to be rotated and expanded for larger size use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driving head is permanently fixed in the handle body, then the spanner structure is simple and strong, but the spanner size is large and difficult to carry
Solution Approach 1:
The driving head is designed to be movable relative to the handle body through a pivotal connection, allowing it to rotate between a compact stored position within the handle body and a working position extending outward. This dynamic configuration enables the spanner to transition between compact and functional states, resolving the contradiction between small size for portability and adequate size for operation.
Solution Approach 2:
The driving head is designed to be received within the hollowed groove of the handle body when not in use, creating a nested configuration where the larger driving head fits inside the handle body cavity. This nesting arrangement allows the spanner to have a compact overall size for easy carrying while maintaining the full size of the driving head when needed for operation.
2Volume of moving object
If the driving head is pivotally installed to rotate along the pivotal shaft, then the spanner is easy to carry in compact form, but the driving head may affect the operation when received in the handle body
Solution Approach 1:
The pivotal installation allows the driving head to dynamically adjust its position and orientation. When received in the handle body, the driving head can rotate along the pivotal shaft to achieve proper alignment and engagement, ensuring reliable operation while maintaining compact storage capability.
Solution Approach 2:
The driving head is segmented from the handle body through the pivotal connection, allowing independent movement and positioning. This segmentation enables the driving head to be received within the handle body's hollowed groove while maintaining the ability to rotate and engage properly for reliable operation.
3Volume of moving object
If the driving head is received in the hollowed groove of the handle body, then the spanner has compact size for easy carrying, but the receiving portion with stop surface restricts the type of tool head
Solution Approach 1:
The driving head with pivotal installation and receiving portion design can accommodate multiple types of driving tools through its versatile configuration. The stop surface and receiving portion are designed to work with various tool head types, enabling the compact spanner to maintain adaptability and versatility while achieving reduced size for easy carrying.
Data Source
AI summary
A palm type spanner comprises a driving head having a receiving portion for receiving a driving tool; and a handle body being an integral plate-like structure; one end of the handle body being formed with an opening portion; the driving head being pivotally installed to the handle body; thereby the driving head being rotatable along the pivotal shaft; and the handle body having a hollowed groove which has a size capable of receiving the driving head.