Torque Screwdriver with Modular Clutch and Universal Interface
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Solution Overview
Problem
Conventional socket tools lack torque control mechanisms, making them prone to damaging fasteners and are inconvenient to connect with various power tools due to their integral design and female connection holes.
Innovation Solution
A torque screwdriver device with a housing, input and output shafts, and a torque clutch mechanism featuring a first and second engaging portion, an elastic preload member, and low friction members to provide torque control and easy tool attachment, allowing for use with various driving tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional socket tool is integrally formed without torque control, then the device complexity is reduced and manufacturing is easier, but the fastener reliability deteriorates due to overloaded force damage
Solution Approach 1:
The socket tool is divided into separate functional components: a drive body housing, a torque clutch mechanism with engaging portions, a drive shaft, and a socket interface. This segmentation allows the torque control function to be implemented through modular components rather than requiring complete redesign of the entire tool, thus improving fastener reliability while limiting the increase in device complexity.
Solution Approach 2:
A torque clutch mechanism acts as an intermediary between the drive shaft and the socket interface. This intermediary component includes a first engaging portion connected to the drive shaft and a second engaging portion connected to the socket, with elastic preload members that engage these portions to provide torque control. The intermediary clutch mechanism prevents direct transmission of excessive torque to the fastener while maintaining efficient power transmission during normal operation.
2Adaptability or versatility
If a conventional socket tool uses a female connection hole design, then the manufacturing precision is simplified, but the adaptability to various power tools deteriorates requiring connection through posts
Solution Approach 1:
The drive body housing is designed with a universal male connection interface that can mate with various female connection holes in different power tools. This universal interface design allows the same torque screwdriver device to be adapted to multiple power tool types without requiring tool-specific modifications, thereby improving adaptability while maintaining relatively simple device complexity through standardized connection geometry.
3Measurement precision
If a torque clutch mechanism with multiple engaging portions and elastic preload members is added, then the torque control precision is improved, but the device complexity increases
Solution Approach 1:
The torque clutch mechanism utilizes elastic preload members whose elastic properties can be adjusted by changing material composition, cross-sectional area, or length. By varying these parameters, different torque thresholds can be achieved without fundamentally changing the mechanism structure. This allows precise torque control to be achieved through parameter optimization rather than complex structural design, thereby improving torque control precision while limiting the increase in device complexity.
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 device prevents damage to fasteners by controlling torque and facilitates quick and easy connection with multiple power tools through its modular design and torque management system.
Implementation Method 1
an elastic preload member and a first bearing mechanism, the first engaging portion being disposed on the input shaft portion, the second engaging portion being disposed on the output shaft portion, the elastic preload member biasing one of the first and second engaging portions
Implementation Method 2
at least one low friction member disposed between the stop member and the support member, at least one of the stop member and the support member being movable relative to the at least one low friction member
Data Source
AI summary
A torque screwdriver device is provided, including: a housing, including a barrel and a cover coveringly connected with the barrel; an input shaft portion, rotatably assembled with the barrel; an output shaft portion, rotatably assembled with the barrel and including a socket mechanism; a torque clutch mechanism, including a first engaging portion disposed on the input shaft portion and a second engaging portion disposed on the output shaft portion, an elastic preload member biasing one of the first and second engaging portions, and a first bearing mechanism, the first bearing mechanism including a stop member abutted against the housing, a support member and at least one low friction member disposed between the stop member and the support member, at least one of the stop member and the support member being movable relative to the at least one low friction member.