Torque Wrench Functional Lock with Audible Feedback
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Solution Overview
Problem
Conventional torque wrenches face issues with inconvenient torque adjustment methods, where users may unknowingly apply incorrect torque values due to lack of clear feedback during position switching and potential damage from environmental factors.
Innovation Solution
A torque wrench with a functional lock that slidably moves between locked and unlocked positions, featuring a medal locking ring, compression spring, C-clasp, and positioning ball, producing distinct percussion sounds and clear hand feelings to indicate switching status, preventing misadjustment and component damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is used to secure the adjustable grip, then the reliability of torque setting is improved, but the ease of operation deteriorates due to requiring tools or complex steps for adjustment
Solution Approach 1:
The locking mechanism transitions from a static locked state to a dynamic unlocked state through a simple pushing motion. The elastic member allows the locking structure to move between locked and unlocked positions, enabling tool-free adjustment while maintaining secure locking when engaged.
Solution Approach 2:
The elastic member automatically returns the locking structure to the locked position after adjustment, and the percussion mechanism self-activates when the locking structure moves, providing automatic feedback without requiring user intervention beyond the initial push motion.
2Ease of operation
If a simple locking structure is used, then the ease of operation is improved, but the reliability deteriorates due to lack of clear feedback on locking status
Solution Approach 1:
The percussion mechanism provides audible and tactile feedback when the locking structure transitions between locked and unlocked positions. This feedback confirms the locking status to the user, ensuring reliability while maintaining simple operation through the push-to-toggle mechanism.
3Strength
If a metal locking component is used, then the strength and durability are improved, but the resistance to environmental factors deteriorates due to rust and corrosion
Solution Approach 1:
The locking structure combines metal components with plastic members. The plastic components provide corrosion resistance while the metal components provide structural strength. This composite approach maintains mechanical strength while protecting against environmental degradation from moisture and corrosion.
4Strength
If the locking structure is made robust, then the strength is improved, but the ease of operation deteriorates due to requiring more force to toggle
Solution Approach 1:
The elastic member acts as a counterbalancing element that stores and releases mechanical energy during the toggling motion. It reduces the force required by the user to move the locking structure between locked and unlocked positions while maintaining the structural strength needed for reliable locking.
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
Ensures user awareness of proper adjustment through audible and tactile feedback, enhancing operational convenience and maintaining component integrity over time.
Implementation Method 1
a compression spring (62), disposed between the locking ring (61) and the adjustable grip (30), and permanently pushing against the locking ring (61)
Implementation Method 2
a percussion sound is produced when the locking ring is switched between the locked position and the unlocked position
Data Source
AI summary
A torque wrench with functional lock includes a hollow main shaft, a tool member, an adjustable grip, a torque-adjustment elastic member, a clutch device, and a functional lock. The locking ring axially moves along the main shaft between a locked position and an unlocked position. When the locking ring is in the locked position, the rotation of the adjustable grip against the hollow main shaft is limited. When the locking ring is in the unlocked position, the rotation of the adjustable grip against the hollow main shaft is allowed, whereby the torque is adjusted. Therein, a percussion sound is produced when the locking ring is switched between the locked position and the unlocked position.