Non-return Ratchet Torque Socket with Acoustic Feedback
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Solution Overview
Problem
Conventional torque sockets lack a mechanism to indicate when a preset torque value is reached during screwing or loosening, and they do not provide a non-return function, which can lead to damage from excessive torque or difficulty in loosening screws.
Innovation Solution
A non-return ratchet type torque socket with a shaft rod and shaft cylinder design, featuring a resilient core shaft, mobile ratchet, and fixed ratchet with unidirectional teeth, that generates a sound when the preset torque is exceeded and allows for a non-return function during loosening by engaging mobile and fixed ratchet teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional rotation tool is used for adjusting the lens of an optical device, then the tool can be operated freely, but the lens may be broken due to overly large torque
Solution Approach 1:
The patent changes the torque parameter by introducing a resilient core shaft with preset torque characteristics. When the applied torque exceeds the preset value, the core shaft elastically deforms and allows idle rotation, thereby limiting the maximum torque transmitted to the screw and preventing damage to the lens.
Solution Approach 2:
The resilient core shaft acts as a cushioning element that is pre-configured with specific elastic properties. Before excessive torque can damage the lens, the core shaft absorbs the excess torque through elastic deformation, providing beforehand protection against torque-related damage.
2Reliability
If a spring and steel ball transmission structure is used to limit output torque, then the torque can be controlled to be quantified, but the dimension of the screwdriver cannot be effectively reduced
Solution Approach 1:
The patent extracts the torque-limiting function from the traditional spring-steel ball transmission structure and implements it directly in the socket through the resilient core shaft. This eliminates the need for separate transmission components, thereby reducing the overall tool dimension while maintaining reliable torque control.
Solution Approach 2:
The torque-limiting function is merged with the socket structure itself. The resilient core shaft is integrated into the socket body, combining the torque control mechanism with the socket's primary function, thereby eliminating additional components and reducing tool dimension.
3Reliability
If a torque socket with preset torque value is used, then the screw can be prevented from being overly locked, but the socket itself does not generate any sound for informing the user the locking state has been reached
Solution Approach 1:
The patent introduces acoustic feedback through the resilient core shaft. When the preset torque value is reached, the core shaft elastically deforms and produces a distinct clicking sound, providing immediate feedback to the user that the locking state has been reached, thereby compensating for the lack of visual or other forms of feedback.
4Ease of operation
If a torque socket is used for loosening the screw, then the screw can be removed, but if the combined force of the screw and the object to be combined is greater than the preset torque value, the core shaft can only idly rotate and cannot be used for loosening the screw
Solution Approach 1:
The patent segments the ratchet mechanism into mobile and fixed ratchets with unidirectional teeth. This segmentation allows the mobile ratchet to engage with the fixed ratchet in one direction (preventing idle rotation during loosening) while allowing idle rotation in the other direction (during tightening when torque limit is reached), thereby resolving the contradiction between ease of operation and reliability during loosening.
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
Prevents excessive torque from damaging screws and components, provides audible feedback on torque limits, and facilitates easy loosening by engaging ratchet teeth for a secure locking mechanism, applicable with manual, pneumatic, or electric tools.
Implementation Method 1
a resilient core shaft formed on a shaft rod is sleeved in a shaft slot axially formed in a shaft cylinder... the core shaft and the shaft slot are provided with a preset torque value... when the applied torque has exceeded the preset torque value, the core shaft idly rotate in the shaft slot
Implementation Method 2
a friction segment capable of packing the core shaft is radially and protrudingly formed in the shaft slot, so the core shaft and the shaft slot are provided with a preset torque value
Implementation Method 3
the mobile ratchet teeth of the mobile ratchet are engaged and rotated along the fixed ratchet teeth of the fixed ratchet for axially and elastically moving so as to generate a sound
Data Source
AI summary
The present invention relates to a non-return ratchet type torque socket comprising a shaft rod and a shaft cylinder. A core shaft of shaft rod is sleeved with a mobile ratchet capable of axially moving; the shaft cylinder having a shaft slot formed for being sleeved with the core shaft; an accommodation slot is formed in the shaft slot thereby allowing the mobile ratchet to be accommodated; the interior of the accommodation slot is formed a fixed ratchet; a fixed ratchet teeth are mutually engaged with a mobile ratchet teeth; when the core shaft rotates in the shaft slot and the applied torque exceeds the preset torque value, the core shaft idly rotates in the shaft slot, the mobile ratchet teeth of the mobile ratchet are engaged and rotated along the fixed ratchet teeth of the fixed ratchet for axially and elastically moving so as to generate a sound.