Storage Unit Guide Plates with Laser-Cut Recesses

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Solution Overview

Problem

Existing storage units for roller shutter-like covers in assembly pits are expensive to manufacture due to complex guide arrangement production and suffer from frictional issues leading to rapid wear.

Innovation Solution

The use of guide plates with recesses, preferably laser-cut or die-cast, eliminates the need for additional rails, reducing material and labor costs, and ensures precise guidance by minimizing unwanted friction through precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional guide arrangements with welded rails are used, then the storage unit provides guidance function, but the manufacturing complexity and cost increase significantly

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidguide arrangement complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent extracts the guide function from the complex welded rail structure and concentrates it into simple recesses formed directly in the guide plates. This eliminates the need for separate rails and their complex welding assemblies, achieving the same guidance function with much simpler manufacturing.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The guide function is merged into the guide plates themselves through integrally formed recesses. Instead of having separate guide rails attached to plates, the guidance structure is combined with the plate body, eliminating additional components and assembly steps.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If welded guide rails are used, then guidance is provided, but relative displacement between components occurs causing friction and wear

Engineering Contradiction:
Improveguidance stabilityVSAvoidfriction and wear
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The guide function is segmented into discrete recesses in each guide plate, allowing independent positioning and eliminating the need for precise welding between multiple components. Each guide plate with its recesses operates independently, preventing relative displacement issues.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mechanical connection method (welding) is replaced by a geometric constraint system (recesses). The recesses provide precise geometric guidance without relying on mechanical fastening or welding, eliminating the relative displacement that occurs in welded assemblies.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If complex guide arrangements are manufactured, then guidance function is achieved, but material and labor costs increase

Engineering Contradiction:
Improveguidance functionVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The guide plates with recesses are designed as simple, inexpensive components that can be manufactured using cost-effective methods like laser cutting or die-casting. These replace expensive welded rail assemblies while maintaining the necessary guidance function.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The manufacturing method is changed from complex welding processes to simpler methods like laser cutting or die-casting. This parameter change in the manufacturing process dramatically reduces both material waste and labor costs while achieving the same functional result.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2199496B1Storage unit for the covering of an installation pit
Publication Date: 2018.03.14 BALZER GMBH & CO KG
  • EP2199496B1 patent drawingFigure 1
  • EP2199496B1 patent drawingFigure 2
  • EP2199496B1 patent drawingFigure 3

AI summary

The unit has lateral guides provided in guiding plates (15) via a spiral-like recess (16), where the guiding plates are arranged at a distance of approximately 25 mm from a lateral pit wall. The spiral-like recess is formed such that guiding rollers (17) are adjustably provided in a cover. The spiral-like recess is formed in the guiding plates by laser cutting, where the cover includes a girder with a connecting unit i.e. conveyor chain.