Pallet Connecting Rod Assembly for Stable Horizontal Load Transfer

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Solution Overview

Problem

Existing connecting devices fail to securely attach a second block to a first block when external forces are applied in directions crossing the axis, especially under heavy loads or when the device is oriented horizontally, leading to misalignment and reduced force transmission.

Innovation Solution

The connecting device features a cylinder hole in the housing with movable engagement members and support members that distribute vertical loads away from the connecting rod, allowing reliable force transmission via engagement balls even when external forces are applied in non-axial directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If the connecting device is used in horizontal orientation with heavy load, then the connecting rod must transmit the full load, but the guide sleeve and engagement balls experience misalignment and gaps reducing force transmission

Engineering Contradiction:
Improveforce transmissionVSAvoidconnection stability
Core Design Contradiction:
ForceVSReliability

Solution Approach 1:

The invention divides the load-bearing function into two separate components: the connecting rod (for axial force transmission) and the support member (for radial load support). This segmentation allows each component to specialize in its optimal function, preventing the connecting rod from experiencing misalignment forces that would compromise reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support member acts as an intermediary component between the base plate and the connecting rod. It intercepts radial loads and external forces before they can affect the connecting rod, thereby protecting the primary force transmission path maintained by the engagement balls.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If the connecting rod is fixed in position, then alignment is precise, but it cannot accommodate misalignment or external forces in non-axial directions

Engineering Contradiction:
Improvealignment precisionVSAvoidtolerance to misalignment
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The connecting rod is designed with movable capability on the base plate surface, transitioning from a fixed to a dynamic configuration. This allows the rod to self-adjust its position to accommodate misalignment while maintaining proper engagement with the engagement balls, combining alignment precision with adaptability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the positional parameter of the connecting rod from fixed to variable, allowing it to move within certain limits on the base plate. This parameter change enables the system to adapt to manufacturing tolerances and external forces while maintaining effective force transmission.

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If support members are added to the base plate, then radial loads are better distributed, but the device complexity increases

Engineering Contradiction:
Improveload distributionVSAvoidnumber of components
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The support member is designed to perform multiple functions: supporting radial loads, accommodating misalignment, and protecting the connecting rod. By consolidating these functions into a single component, the invention achieves improved load distribution without proportionally increasing device complexity.

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

Solution Approach 2:

The support member integrates several functional elements into one component: it provides structural support, enables misalignment accommodation, and protects the engagement mechanism. This merging reduces the total number of separate parts compared to having dedicated components for each function.

Inventive Principle:
Principle #5Merging (Combining)

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 configuration ensures a secure connection by transmitting driving forces effectively through engagement balls, maintaining stability under vertical loads and external forces applied in non-axial directions, even when the device is in a horizontal orientation.

Implementation Method 1

The engagement members 16, 38 are moved inward in the radial direction by movement of the output member 5 in the axial direction

Methodology Applied
Scientific EffectMechanical force transmission: Mechanical Force

Implementation Method 2

at least one support member 23, 24 is provided so as to protrude from the base plate 21 in parallel to an axial direction of the connecting rod 22

Methodology Applied
Scientific EffectLoad distribution: Force

Implementation Method 3

The connecting rod 22 is configured to be movable on a surface 21a of the base plate 21

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS12103123B2Connecting device
Publication Date: 2024.10.01 KOSMEK LTD (JP)
  • US12103123B2 patent drawing
  • US12103123B2 patent drawing
  • US12103123B2 patent drawing

AI summary

A base plate (21) is attached to a side wall surface of a pallet (P). A connecting rod (22) provided so as to protrude from the base plate (21) is configured to be movable on a surface (21a) of the base plate (21). An insertion hole (18) is provided in a housing (1) attached to a robot arm (R), and the connecting rod (22) is inserted in the insertion hole (18). Two pins (23 and 24) extending in parallel to an axial direction of the connecting rod (22) are provided so as to protrude from the base plate (21). The pins (23 and 24) are respectively inserted in support holes (19 and 20) of the housing (1).