Cylinder Guide Mechanism Floating Bush Retrofit

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Solution Overview

Problem

Existing cylinder guide mechanisms require machining and drilling to attach to preexisting cylinders, making them complicated and difficult to retrofit as retail commercial products.

Innovation Solution

A cylinder guide mechanism comprising a floating bush, a holding part, and a guide mechanism with a displaceable member supported by a bracket, allowing attachment without drilling or machining, enabling easy assembly and flexibility in placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If guide holes are formed in the tube through drilling and machining, then the guide mechanism can be attached to the cylinder, but the attachment process becomes complicated and difficult for retrofitting preexisting cylinders

Engineering Contradiction:

Improveguide mechanism attachmentVSAvoidattachment process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The guide mechanism is divided into separate components: a guide mechanism unit and a cylinder unit. The guide mechanism unit can be manufactured independently and then attached to the cylinder without requiring drilling or machining of the cylinder tube, thus simplifying the attachment process while ensuring reliable guide function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The guide mechanism is extracted from the integrated tube structure and formulated as a separate attachable unit. This allows the guide mechanism to be added to preexisting cylinders without modifying the cylinder itself through drilling or machining operations.

Inventive Principle:

Principle #2Taking out (Extraction)

2Manufacturing precision

If the guide mechanism is integrated with the cylinder as a single unit, then non-rotational precision is enhanced, but the attachment process requires drilling and machining

Engineering Contradiction:

Improvenon-rotational precisionVSAvoidattachment process

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system is segmented into a guide mechanism unit containing guide rods and a cylinder unit. The guide mechanism unit is designed to attach to the cylinder through simple mounting operations, maintaining the precision guiding function without requiring complex drilling and machining of the integrated structure.

Inventive Principle:

Principle #1Segmentation

3Stability of the object's composition

If guide rods are connected to the piston rod through a connecting plate, then rattling is prevented, but the structure becomes more complex

Engineering Contradiction:

Improverattling preventionVSAvoidstructure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

A connecting plate serves as an intermediary component between the guide rods and the piston rod. This mediator enables the guide rods to constrain the piston rod's movement and prevent rattling, while keeping the overall structure modular and manageable through standardized connection interfaces.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10323660B2Cylinder guide mechanism and cylinder with guide mechanism

Publication Date: 2019.06.18 SMC CORP

AI summary

A cylinder guide mechanism includes a floating bush, a holding part that holds the floating bush, and a linear guide. When a working fluid is supplied in a tube and a piston rod moves back and forth, the floating bush and a guide member of the linear guide move back and forth in the same direction. At this time, a slider of the linear guide is displaced relative to the guide member by retaining the same position. The slider is connected to the tube via an L-bracket.