Trigger Grip Single-Handed Operation Mechanism
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Solution Overview
Problem
Existing wire gripping tools require both hands to operate and have a screw that tends to separate over time, making them inconvenient and unreliable.
Innovation Solution
A trigger grip design with a body featuring a lateral upper jaw, pivot section, sleeve section, pivotal link, lever, and torsion spring, allowing single-handed operation and automatic return, replacing the traditional rivet for enhanced structural strength and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a screw is used to secure the wedge to the installation member, then the components can be assembled, but the screw tends to separate after a period of time of use
Solution Approach 1:
The patent merges the wedge and installation member into a single integrated body structure, eliminating the need for separate screws to secure these components. The body comprises both the upper jaw and the installation member as integral parts, preventing separation over time while maintaining ease of manufacture through single-piece construction.
Solution Approach 2:
The patent removes the screw component entirely from the design by integrating the previously separate wedge and installation member into one unified body. This extraction of the fastening element eliminates the reliability issue of screw separation while simplifying the overall structure.
2Ease of operation
If both hands are used to pull the projection to open the jaws, then the jaws can be opened for wire installation, but the operation is inconvenient
Solution Approach 1:
The patent introduces a dynamic trigger mechanism with a lever that can be actuated by a single hand. The lever pivots between engaged and disengaged positions, dynamically controlling the opening and closing of the jaws. This dynamic operation replaces the static two-handed pulling action, significantly improving ease of operation.
Solution Approach 2:
The patent introduces a lever as an intermediary component between the user's hand and the jaw-opening mechanism. The lever translates the user's pulling action on the trigger into the motion needed to open the jaws, mediating the interaction and enabling convenient single-handed operation.
3Ease of operation
If a projection is provided on the wedge to facilitate movement, then the wedge can move to the installation member, but the user has to use both hands to pull the projection
Solution Approach 1:
The patent transforms the static projection into a dynamic trigger mechanism with a lever. The trigger can be pulled by a single hand to dynamically control the lever's position, which in turn controls the jaw opening. This dynamic system maintains ease of jaw opening while dramatically improving operation efficiency through single-handed control.
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 single-handed operation, simplifies assembly, increases structural strength, and prolongs tool life by allowing easy opening and closing of jaws with a trigger and pistol grip mechanism, and automatic return mechanism.
Implementation Method 1
a torsion spring interconnecting a projection of the body and the pivotal link can effect an automatic returning of the pivotal link for a next operation
Implementation Method 2
a lever comprising a first hole at one end, a second hole at the other end, and a protuberance depending from the other end, the lever being inserted through the slot with its first hole pivotably secured to the pivotal link
Data Source
AI summary
A trigger grip (100) includes a body (10) including an upper jaw (11) extending laterally, a pivot section (12) depending from one end of the upper jaw (11), and a sleeve section (13) depending from another end of the upper jaw (11), the sleeve section (13) having a slot (131) and an extension (132) depending from the slot (131); a pivotal link (20) pivotably secured to the pivot section (12); a lever (30) having a first hole (31) at one end, a second hole (32) at the other end, and a protuberance (33) depending from the other end, the lever (30) being inserted through the slot (131) with its first hole (31) pivotably secured to the pivotal link (20); and a bifurcated gripping seat (40) pivotably secured to the pivotal link (20) and having a jaw member (41) engaged with the upper jaw (11) from below in an inoperative position.