Crimping Pliers Coupling Assembly Without Vertical Bolts

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Solution Overview

Problem

Existing crimping pliers designs require complex assembly and disassembly processes, particularly due to the need for vertically aligned coupling bolts, which can be cumbersome and prone to unintentional release during use, and pose challenges in handling and operation.

Innovation Solution

The design incorporates coupling devices with open-sided recesses and elements that pivot relative to each other, secured by a spring device, allowing for simplified coupling and decoupling without vertical bolt insertion, and featuring inclined coupling recesses to prevent unintended release, enhancing both assembly and operational safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If coupling bolts are used for assembling the crimping pliers actuation assembly group to the crimping pliers head, then the coupling is secure, but the assembly process becomes complex and time-consuming due to the need for vertical alignment of multiple components

Engineering Contradiction:

Improvecoupling securityVSAvoidassembly time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The coupling device is divided into separate components: a coupling element with an inclined insertion surface and a coupling recess with a corresponding inclined surface. These segments can be manufactured independently and assembled by simple insertion movements rather than requiring complex vertical alignment of multiple bolts and holes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of using traditional vertical bolt insertion from top to bottom requiring precise alignment, the coupling recess is designed to be approached from an inclined direction. The insertion surface of the coupling element meets the inclined surface of the coupling recess at an angle, allowing assembly by pushing in the inclined direction rather than requiring vertical alignment.

Inventive Principle:

Principle #13The other way round (Inversion)

2Device complexity

If traditional coupling mechanisms are used, then the structure is simple, but the coupling may release unintentionally during use due to lack of secure engagement

Engineering Contradiction:

Improvecoupling structure simplicityVSAvoidcoupling stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The spring device applies a preliminary counteracting force to the coupling element, pressing it against the coupling recess to prevent any unintended release during use. This pre-applied force counteracts any forces that might try to separate the coupling, ensuring stable engagement without complex locking mechanisms.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The coupling element and coupling recess feature inclined surfaces that guide the coupling together. The curved or angled geometry of these surfaces ensures proper alignment and secure engagement, while the spring device provides continuous pressure to maintain the coupled state against operational forces.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of manufacture

If vertically oriented coupling bolts are used, then the assembly is straightforward, but the operator requires significant effort to align and insert the bolts through multiple components

Engineering Contradiction:

Improveassembly straightforwardnessVSAvoidoperator effort

Core Design Contradiction:

Ease of manufactureVSForce

Solution Approach 1:

Instead of requiring the operator to align and insert vertical bolts through multiple stacked components, the coupling recess is designed to be approached from an inclined direction. The operator simply pushes the coupling element in the inclined direction, allowing the insertion surface to meet the coupling recess surface naturally, greatly reducing alignment effort.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The inclined surfaces of the coupling element and coupling recess automatically guide the assembly process. When the operator pushes the coupling element in the inclined direction, the geometry itself ensures proper alignment and engagement without requiring the operator to manually align multiple holes and bolts, making the system self-aligning.

Inventive Principle:

Principle #25Self-service

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

This design simplifies the assembly and disassembly of crimping pliers, ensures secure coupling without vertical bolt alignment, and reduces operator effort by leveraging spring force for secure engagement, thereby improving usability and reliability.

Implementation Method 1

The spring device supports the die half on the pliers head frame in such a way that the spring device biases the die half in an opening direction

Methodology Applied

Scientific EffectSpring force: Spring

Data Source

PatentUS20240162673A1Crimping pliers and method for assembling crimping pliers

Publication Date: 2024.05.16 WEZAG GMBH & CO KG

AI summary

The invention relates to crimping pliers and a method of assembling crimping pliers. According to the invention, a coupling of a crimping pliers head (32) to a crimping pliers actuation assembly group (1) is provided by coupling recesses (45, 46) and coupling elements (22, 23) arranged in the coupling recesses (45, 46). A re-exit of the coupling elements (22, 23) from the coupling recesses (45, 46) is prevented by a spring device which is effective between the die halves (35, 37) for biasing the movable die half (37) in opening direction.