Spring-Action Latch for Sleeve Pack Assembly

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Solution Overview

Problem

Existing returnable bulk container designs, such as sleeve packs, face challenges with weak passive interference fits that are difficult to assemble and may damage the sleeve, and active latching mechanisms that require bending or kneeling to engage and disengage.

Innovation Solution

A sleeve pack assembly featuring a polygonal shaped sleeve and frame with a latch system that includes a segmented body with C-shaped members and a tongue, allowing for easy assembly and disassembly without the need to bend or reach, utilizing a spring-action latch that engages securely with the sleeve and frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a passive interference fit is used to retain the sleeve to the pallet and top cap, then the assembly is simple, but the engagement is weak and may damage the sleeve

Engineering Contradiction:
Improveassembly simplicityVSAvoidengagement strength
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The latch is divided into multiple functional segments: a body portion that engages the sleeve aperture, a tongue portion that engages the frame channel, and a spring portion that provides actuating force. This segmentation allows each component to perform its specific function optimally while maintaining overall simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The spring-action latch is designed to automatically engage and disengage without requiring manual manipulation. The spring portion stores and releases energy to actuate the latch, enabling self-operating engagement that eliminates the need for operators to bend or kneel to reach under the pallet.

Inventive Principle:
Principle #25Self-service

2Reliability

If an active latching mechanism is used to provide strong engagement, then the locking strength is improved, but the operator must bend over or kneel to engage and disengage the lock

Engineering Contradiction:
Improvelocking strengthVSAvoidassembly convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The latch operates in a vertical dimension by engaging through the aperture in the sleeve wall, allowing the operator to access and manipulate the latch from the top side rather than reaching under the pallet from below. This dimensional change in engagement approach eliminates the need for bending or kneeling.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The latch acts as an intermediary mechanism between the sleeve and frame, providing a reliable connection without requiring direct manual manipulation under the pallet. The spring-action mechanism mediates the engagement process, making it accessible from the top side.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If a spring-action latch is used to enable easy assembly, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveassembly easeVSAvoidlatch structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The latch combines multiple functions into a single integrated component: the body portion engages the sleeve aperture, the tongue portion engages the frame channel, and the spring portion provides actuating force. This merging of functions into one component achieves easy operation without proportionally increasing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The latch is designed as a multi-functional component that simultaneously provides engagement with the sleeve, engagement with the frame, and self-actuation through spring action. This universality allows a single component to perform multiple functions that would otherwise require separate mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution provides a strong and secure locking mechanism that is easy to assemble and disassemble, eliminating the need for bending or kneeling, while ensuring the sleeve is securely attached to the frame, enhancing user safety and efficiency.

Implementation Method 1

a spring-action latch that engages securely with the sleeve and frame

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11577883B2Latch for a sleeve pack assembly
Publication Date: 2023.02.14 ORBIS CORP
  • US11577883B2 patent drawing
  • US11577883B2 patent drawing
  • US11577883B2 patent drawing

AI summary

The invention is directed to a latch for a sleeve pack assembly.