C-Type Pliers Switching Unit for Inner Outer Diameter Clamping
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Solution Overview
Problem
Existing C-type pliers designs require two different types to clamp or unclamp C rings, leading to increased production costs and complexity due to intricate mechanisms.
Innovation Solution
A C-type pliers design featuring a switching unit with a first and second cover that drives the switching unit directly, allowing the first and second elongated jaws to pivot and switch between clamp and unclamp positions using a shaft and retainer system, enabling operation on both inner and outer diameters of C rings with a single pair of pliers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching mechanism with a movable switchplate and reaction member housing assemblies is used to enable alternative operating positions, then the pliers can clamp both inner and outer diameters of C rings, but the cover spaces apart from the movable switchplate complicatedly, increasing production cost
Solution Approach 1:
The switching mechanism is divided into separate functional components: a fixed switchplate with positioning holes, a movable connection piece with protrusions, and retainer balls. This segmentation allows each component to perform its specific function independently while simplifying their interconnections, reducing the complexity of the cover assembly compared to the prior art's integrated reaction member housing assemblies.
Solution Approach 2:
The invention extracts the switching functionality from a complex integrated mechanism and separates it into independent elements: the switchplate remains fixed while the connection piece moves independently within the handle. This extraction eliminates the need for complicated cover-swatchplate connections required in prior art, as the switching action occurs within the handle structure itself.
2Adaptability or versatility
If transfer pins are slidably disposed in jaws and handles with reaction member housing assemblies, then alternative operating positions are established, but the structure becomes complicated with high production cost
Solution Approach 1:
The invention replaces expensive, complex reaction member housing assemblies with simpler, cheaper components: a flat switchplate with holes, a movable connection piece, and small retainer balls. These simpler components achieve the same switching functionality at lower production cost, aligning with the principle of using simpler objects to replace complex ones when functionality is equivalent.
Solution Approach 2:
The invention uses identical positioning holes in both handles and identical connection pieces in both jaws, creating a symmetric, repeatable structure. This copying approach simplifies manufacturing by allowing mass production of identical components, reducing production cost compared to the asymmetric, custom-fitted reaction member housing assemblies of the prior art.
3Adaptability or versatility
If a single C-type pliers is designed to switch clamp and unclamp directions, then one pair of pliers can replace two different types, but the switching mechanism increases device complexity
Solution Approach 1:
The invention merges the switching mechanism directly into the handle structure by integrating the connection piece that moves between positioning holes. This integration eliminates the need for separate external switching devices or complex external mechanisms, achieving versatility through internal merging of functions rather than adding separate systems.
Solution Approach 2:
The connection piece automatically engages with the appropriate positioning hole based on the direction of force applied to the handles. When the user applies force in different directions, the connection piece self-actuates to engage different holes, providing automatic switching without requiring complex external control mechanisms. The system serves itself by using the user's input force to trigger the switching action.
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 quick switching between clamp and unclamp directions for both inner and outer diameters of C rings with a single pair of pliers, simplifying assembly and reducing production costs.
Implementation Method 1
a shaft extending outwardly from the second cover and used to drive the first cover and the second cover simultaneously, the shaft pivots the first handle, the second handle, the first elongated jaw, and the second elongated jaw
Data Source
AI summary
A C-type pliers contains a first elongated jaw including a first recess and a third recess, a second elongated jaw including a second recess and a fourth recess; a first handle further including a first notch, and a second handle including a second notch; a switching unit including a first cover, a second cover, a shaft extending outwardly from the second cover and used to drive the first cover and the second cover simultaneously, the shaft pivots the first handle, the second handle, the first elongated jaw, and the second elongated jaw; a switching unit also including a first retainer, a second retainer, when the first retainer retains in the first recess, the second retainer retains in the fourth recess simultaneously, and when the first retainer retains in the second recess, the second retainer retains in the third recess synchronously.