Rotatable Fastening Device Gravity Impact Torque
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotary fastening tools face challenges in achieving miniaturization, lightweight design, and maintaining better fastening force, as conventional electric and air impact wrenches are either too complex or bulky, and previous solutions either lack quick-release functionality or are difficult to produce and store.
Innovation Solution
A rotatable fastening device comprising a rotatable base with a pivoting axis and an impact member that generates a tangent impact force using gravity units, allowing for efficient tightening and loosening operations with a compact and lightweight design, and enabling quick-release of the impact member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional electric wrench is used, then the structure is compact, but the maximum torque is limited by the electric motor
Solution Approach 1:
The patent replaces the electric motor's mechanical torque generation system with a gravitational impact system. The impact member with gravity units generates torque through gravitational force and impact mechanics, eliminating the need for a high-torque electric motor and its complex control system, thereby achieving higher fastening torque with simpler structure.
Solution Approach 2:
The patent changes the fundamental parameter of torque generation from continuous motor rotation to intermittent gravitational impact. By utilizing the gravity units' weight and the impact member's striking action, the system achieves peak torque values that exceed what a compact electric motor could provide, while maintaining a simple structural design.
2Force
If air impact wrench is used, then high torque is achieved, but the volume is large due to pump and pipeline requirements
Solution Approach 1:
The patent extracts and eliminates the pump and pipeline subsystems from the air impact wrench design. By using a self-contained gravitational impact mechanism, the system removes the external air supply infrastructure, dramatically reducing the device volume while maintaining high torque capability through the impact member's gravitational force.
Solution Approach 2:
The patent implements a self-service system where the impact member with gravity units generates its own operating force through gravity, eliminating the need for external power sources like air pumps. The system uses its own weight and the impact mechanism to generate high torque, making it compact and portable without requiring bulky support equipment.
3Force
If hammer and hit block are used for torque control, then greater fastening torque is achieved, but the structure becomes complex and quick-release is difficult
Solution Approach 1:
The patent segments the impact mechanism into a modular impact member that can be independently manufactured and assembled. The gravity units are integrated into the impact member as separate components, allowing for simplified manufacturing and easy replacement or adjustment, thereby reducing overall structural complexity while maintaining the torque control functionality.
Solution Approach 2:
The patent introduces dynamic elements by making the impact member rotatable and the gravity units movable within the impact member. This dynamic design allows the impact member to be quickly engaged or disengaged from the driving tool, enabling rapid release and reconfiguration without complex fastening mechanisms, thus improving ease of manufacture and operation.
4Weight of moving object
If miniaturization and light weighting are pursued, then compact design is achieved, but fastening force is reduced
Solution Approach 1:
The patent fundamentally changes the torque generation parameter from motor power to gravitational force. By using the impact member's weight and the gravitational acceleration, the system generates high impact torque without requiring a powerful motor, thus achieving miniaturization and light weighting while maintaining or even enhancing fastening force capability.
Solution Approach 2:
The patent employs periodic impact action instead of continuous force application. The gravity units deliver torque through repeated striking motions, where each impact provides a high torque pulse. This periodic action allows the use of lighter components that can withstand intermittent loads, enabling weight reduction while maintaining effective fastening force through cumulative impact effects.
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
The solution provides enhanced torque for both tightening and loosening operations while being compact and lightweight, suitable for various applications, and allows for easy assembly and disassembly without causing reverse impacts, thus addressing the market demand for miniaturization and light weighting.
Implementation Method 1
the impact member has at least one gravity unit projected outwardly therefrom. The gravity unit is driven by the rotatable base to rotate around the pivoting axis for generating a tangent impact force.
Data Source
AI summary
A rotatable fastening device includes a rotatable base and an impact member. The rotatable base rotates along a pivoting axis, and the rotatable base is removably connected with and driving a rotatable member. The impact member is removably connected to an outside of the rotatable base, and the impact member has at least one gravity unit projected outwardly therefrom. The gravity unit is driven by the rotatable base to rotate around the pivoting axis for generating a tangent impact force.