Dual-Sleeve Height Adjustment Structure to Prevent Rod Disengagement

Solution Overview

Problem

Conventional height adjustable accessory structures face manufacturing challenges due to the difficulty in producing C-shaped rings and are prone to disengagement issues, leading to high costs and operational inconveniences.

Innovation Solution

A C-shaped ring is positioned within a dual-sleeve structure with an engaging rod featuring a tightening section and engaging member, allowing for easy assembly and preventing disengagement by utilizing elastic hooks that deform to fit within the sleeve, ensuring secure engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a C-shaped ring is used in the engaging sleeve to enable height adjustment, then the height adjustable function is achieved, but the manufacturing cost increases and the manufacturing difficulty increases

Engineering Contradiction:

Improveheight adjustable functionVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The engaging sleeve is divided into a main sleeve body and an assistant sleeve body that can be assembled separately. The C-shaped ring is pre-installed in the assistant sleeve body, which is then attached to the main sleeve body. This segmentation allows the C-shaped ring to be manufactured and installed independently, reducing overall manufacturing difficulty and cost while maintaining the height adjustment function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The C-shaped ring is pre-positioned in the assistant sleeve body before the final assembly with the main sleeve body. This preliminary action ensures the C-shaped ring is correctly positioned without requiring complex in-sleeve installation procedures, simplifying the manufacturing process and reducing costs.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If a C-shaped ring is used in the engaging sleeve to enable height adjustment, then the height adjustable function is achieved, but the manufacturing difficulty increases

Engineering Contradiction:

Improveheight adjustable functionVSAvoidmanufacturing difficulty

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The engaging sleeve is divided into a main sleeve body and an assistant sleeve body that can be assembled separately. The C-shaped ring is pre-installed in the assistant sleeve body, which is then attached to the main sleeve body. This segmentation allows the C-shaped ring to be manufactured and installed independently, reducing overall manufacturing difficulty and cost while maintaining the height adjustment function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The C-shaped ring is pre-positioned in the assistant sleeve body before the final assembly with the main sleeve body. This preliminary action ensures the C-shaped ring is correctly positioned without requiring complex in-sleeve installation procedures, simplifying the manufacturing process and reducing costs.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If no disengagement prevention structure is provided between the engaging rod and engaging sleeve, then the structure is simpler, but the engaging rod can be pulled out by improper force causing operational inconveniences

Engineering Contradiction:

Improvestructure simplicityVSAvoiddisengagement prevention

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

An elastic piece is introduced as an intermediary component between the engaging rod and the engaging sleeve. This elastic piece includes elastic hooks that engage with the engaging rod, providing a reliable connection that prevents accidental disengagement while maintaining relative structural simplicity. The elastic piece acts as a mediator that secures the connection without requiring complex mechanical interlocking structures.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 facilitates quick and cost-effective assembly of the C-shaped ring while preventing accidental disengagement of the engaging rod, enhancing operational stability and safety.

Implementation Method 1

The tightening section allows free deformation of the elastic hooks at the bottom of the engaging sleeve, thus allowing the elastic hooks to successfully pass through the sleeve

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS7445397B1Height adjustable accessory structure

Publication Date: 2008.11.04 LAI YUSN

AI summary

A height adjustable accessory structure includes a C-shaped ring disposed in an engaging sleeve including a main sleeve body and an assistant sleeve body engaged with each other for allowing insertion and positioning of an engaging rod with a plurality of engaging portions. The bottom of the engaging rod includes a tightening section and an engaging member whose size is between the outer diameter and the inner diameter of the engaging sleeve. The tightening section allows free deformation of elastic hooks at the bottom of the engaging sleeve, thus allowing the elastic hooks to successfully pass through the sleeve and enabling the elastic hooks to be positioned below the engaging sleeve after inserting through the sleeve. The engaging member will be stopped against the engaging sleeve, and the engaging rod cannot be pulled away from the engaging sleeve.