Variable Driving State Wrench with Switchable Ratchet Mechanism
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Solution Overview
Problem
Conventional wrenches either have high torque but inconvenient locking and unlocking operations or provide one-way rotation but lower torque, necessitating the use of multiple wrench types to meet operational requirements.
Innovation Solution
A wrench structure with a variable driving state, featuring a rod and sleeve that can be selectively positioned to switch between a fixed-head and ratchet wrench mode, utilizing an engaging block with ratchet teeth, elastic elements, and a connecting portion to engage with different ratchet and non-ratchet portions on the sleeve, allowing for easy switching between torque application and one-way rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a fixed-head wrench is used, then high torque output is achieved, but locking and unlocking operations become inconvenient
Solution Approach 1:
The wrench head is designed with a movable structure that can dynamically switch between two states: a fixed state for high torque output and a ratcheting state for convenient locking and unlocking. The ratchet mechanism allows the wrench head to transition between engaged and disengaged positions, providing operational convenience while maintaining high torque capability when needed.
2Ease of operation
If a ratchet wrench is used, then locking and unlocking operations become convenient, but torque output decreases
Solution Approach 1:
The wrench head is designed to perform multiple functions within a single tool: it can operate as a fixed-head wrench for high torque applications and as a ratchet wrench for convenient locking and unlocking operations. This multi-functionality eliminates the need to carry multiple wrench types while providing both high torque output and operational convenience.
3Adaptability or versatility
If multiple wrench types are carried, then both high torque and convenient operations are covered, but device complexity increases
Solution Approach 1:
The invention merges the functions of a fixed-head wrench and a ratchet wrench into a single unified tool. The wrench head incorporates both a fixed position and a ratcheting mechanism with switchable states, allowing users to obtain both high torque output and convenient locking/unlocking operations from one tool rather than carrying multiple separate wrenches.
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 swift switching between high-torque fixed-head and ratchet wrench functions, providing flexible and convenient operation with enhanced stability and durability by distributing force effectively and maintaining secure engagement.
Implementation Method 1
at least one elastic element, which is disposed in the accommodating slot, presses against a wall portion of the accommodating slot at one end and presses against the engaging block at the opposite end
Data Source
AI summary
A wrench structure with a variable driving state includes a rod and a sleeve connected to the rod. An outer surface of the rod includes an accommodating slot, an engaging block, an elastic element, and a connecting portion. The engaging block and the elastic element are disposed in the accommodating slot. The connecting portion is adjacent to the accommodating slot and surrounds the outer surface of the rod. The sleeve includes a first ratchet portion, a second ratchet portion, and a non-ratchet portion located between the two ratchet portions. The sleeve can be selectively displaced relative to the rod to a first position, where the connecting portion is connected with the second ratchet portion, or a second position, where the connecting portion is adjacent to the non-ratchet portion. By controlling the relative positions of the rod and the sleeve, the driving state of the wrench structure can be switched.