Palm Ratchet Tool with Interchangeable Sockets and Pendular Switch
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Solution Overview
Problem
Conventional ratchet wrenches require multiple sets for different-sized workpieces, making them inconvenient to carry and increasing maintenance costs due to the need for frequent tool changes.
Innovation Solution
A palm ratchet tool with interchangeable sockets and a ratchet switch mechanism that allows for adjustable turning direction, featuring a pendular rod connecting left and right detents to engage with a ratchet wheel, enabling easy socket replacement and secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sets of wrenches are used for different-sized workpieces, then the adaptability to different workpiece sizes is improved, but the device complexity and carrying convenience deteriorate
Solution Approach 1:
The patent implements a universal wrench handle that can accommodate multiple sockets of different sizes through a standardized square drive interface. The ratchet mechanism and handle structure remain the same while allowing interchangeable sockets to adapt to various workpiece sizes, eliminating the need for multiple dedicated wrenches.
Solution Approach 2:
The wrench system is divided into separate functional components: a universal ratchet handle and interchangeable sockets. This segmentation allows the handle to remain constant while only the socket portion needs to be changed for different workpiece sizes, reducing the overall complexity of the tool set.
2Adaptability or versatility
If multiple sets of wrenches are used for different-sized workpieces, then the adaptability to different workpiece sizes is improved, but the ease of operation and carrying convenience deteriorate
Solution Approach 1:
The universal ratchet handle with standardized drive interface allows users to operate all sockets with the same handle mechanism, improving ease of operation while maintaining adaptability to different workpiece sizes through socket interchangeability.
3Adaptability or versatility
If multiple sets of wrenches are used for different-sized workpieces, then the adaptability to different workpiece sizes is improved, but the loss of time for tool changes increases
Solution Approach 1:
By segmenting the wrench system into a universal handle and interchangeable sockets with standardized interfaces, the patent enables rapid socket changes without affecting the handle or ratchet mechanism, significantly reducing the time lost during tool changes while maintaining adaptability to different workpiece sizes.
Data Source
AI summary
A palm ratchet tool includes an upper cover, a lower cover, a ratchet, a ratchet switch, and sockets. The upper cover is provided with through holes. The sockets are disposed in the through holes, respectively. The ratchet switch is disposed between the upper and lower covers. The ratchet switch includes a left detent, a right detent, and a pendular rod connected with the left and right detents. The lower cover is connected with the bottoms of the sockets. The top end of the pendular rod passes through the lower surface of the lower cover. The ratchet is disposed on the outer rims of the upper and lower covers. The inner surface of the ratchet is provided with a ratchet wheel. The ratchet switch is disposed close to the ratchet. The left detent or the right detent engages with the ratchet wheel under the action of the pendular rod.