Pliers Actuation Assembly with Vertical-Insertion Lever Plate Mounting

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Solution Overview

Problem

Existing pliers actuation assembly groups have complex assembly processes, require numerous components, and lack efficient automatic assembly methods, making them cumbersome and time-consuming to assemble and disassemble.

Innovation Solution

A pliers actuation assembly group design featuring two hand levers with a pivotally connected locking pawl, spring, and pulling bar, utilizing shoulders and protrusions for simplified assembly, allowing for either manual or partially automated assembly by integrating the locking pawl, spring, and pulling bar into hand lever plates, reducing the need for intricate threading and enhancing assembly speed and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional pliers actuation assembly groups are assembled using multiple separate components and intricate threading, then the connection reliability is improved, but the assembly complexity and time increase significantly

Engineering Contradiction:
Improveconnection reliabilityVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the locking pawl, spring, and pulling bar into an integrated assembly unit that attaches to the hand lever plates as a single group. This merging of components simplifies the assembly process while maintaining the functional reliability of each individual component, directly resolving the contradiction between connection reliability and assembly complexity

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If traditional pliers actuation assembly groups use numerous separate components, then the functional reliability is improved, but the number of assembly steps and time required increase

Engineering Contradiction:
Improvefunctional reliabilityVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The locking pawl, spring, and pulling bar are pre-assembled into a ready-to-install unit with all necessary connections already made. This preliminary assembly action eliminates the need for time-consuming on-site assembly of individual components, reducing assembly time while preserving functional reliability through proper pre-configuration

Inventive Principle:
Principle #10Preliminary action

3Strength

If traditional designs require intricate threading and multiple components, then the mechanical strength is improved, but the ease of manufacture and assembly are reduced

Engineering Contradiction:
Improvemechanical strengthVSAvoidease of assembly
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The design segments the actuation assembly into modular components (locking pawl, spring, pulling bar) that are manufactured separately with standardized connection interfaces, then assembled as a group. This segmentation allows each component to be optimized for manufacturing while simplifying the overall assembly process through modular integration

Inventive Principle:
Principle #1Segmentation

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 design simplifies the assembly process, reduces the number of components, and enables both manual and automated assembly options, providing a robust and efficient connection between the actuation assembly group and the pliers head, ensuring reliable operation and reduced assembly time.

Implementation Method 1

a spring (86), said spring (86) having a first end and a second end, said second end (100) being supported on said locking pawl (85)

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20240157516A1Method of assembling a pliers actuation assembly group, pliers actuation assembly group and pliers
Publication Date: 2024.05.16 WEZAG GMBH & CO KG
  • US20240157516A1 patent drawing
  • US20240157516A1 patent drawing
  • US20240157516A1 patent drawing

AI summary

The invention relates to a pliers actuation assembly (1), pliers and a method of assembling a pliers actuation assembly (1). According to the invention, a locking pawl (85) has protrusions (89), a spring (86) has protrusions (92) and/or pulling bars (16, 17) have protrusions (14, 15) which are received in accommodations (90, 93, 12, 13) of hand lever plates (64, 65, 66, 67) in a joining direction vertical to the pivoting plane of hand levers (2, 3). The inventive design facilitates assembly of the pliers actuation assembly (1), while also enabling an at least partially automated assembly.