Pressure Gauge Rotary Screen Adjustment via Segmented Cover

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Solution Overview

Problem

Existing indicator devices, such as pressure gauges, face challenges in adjusting operating zones without visualizing dial graduations, risking damage to the needle or drive mechanism, and require disassembly of components, which is inconvenient and potentially disruptive, especially in installed systems like pressure gauges in compressed air networks.

Innovation Solution

An indicator device with a base casing and an interface casing that allows adjustable rotary screens, where the protective cover can be removed to adjust the screen's position without separating the interface box from the base box, enabling precise adjustment while maintaining visibility of both the screen and dial, and featuring a retaining pin and fixed screen for compact assembly and aesthetic design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the protective cover is fixed to the interface box, then the internal components are protected, but the adjustment of rotary screens becomes difficult requiring disassembly

Engineering Contradiction:

Improveprotection of internal componentsVSAvoidadjustment of rotary screens

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The protective cover is segmented into a fixed portion attached to the interface box and a movable portion that can be detached. This allows the cover to provide protection during normal operation while enabling access to rotary screens for adjustment when needed, resolving the contradiction between protection and adjustability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protective cover transitions from a static fixed state to a dynamic removable state. The cover can be moved between covering and uncovered positions, allowing the system to adapt between needing protection and needing access for adjustment, thus resolving the contradiction.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the rotary screens are adjusted without visualizing the dial graduations, then the adjustment can be made quickly, but the precision and accuracy of the operating zone indication deteriorates

Engineering Contradiction:

Improvespeed of adjustmentVSAvoidprecision of operating zone indication

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The movable protective cover is designed to be removable to expose both the rotary screens and the dial graduations simultaneously. This preliminary preparation allows the user to perform precise alignment during adjustment by visualizing the graduations, ensuring accurate operating zone indication while maintaining efficient access.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If the interface box is separated from the base box for screen adjustment, then the screens can be accessed, but the system complexity and potential for damage increases

Engineering Contradiction:

Improveaccess to rotary screensVSAvoiddisassembly requirements

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The protective cover is segmented as a separate movable component that can be detached independently from the interface box and base box assembly. This segmentation allows access to rotary screens through cover removal alone, eliminating the need to separate the interface box from the base box, thus reducing system complexity and potential for damage.

Inventive Principle:

Principle #1Segmentation

4Adaptability or versatility

If multiple rotary screens are provided for different operating zones, then the versatility of the device improves, but the device complexity increases

Engineering Contradiction:

Improveindication of different operating zonesVSAvoidnumber of adjustable components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple rotary screens are mounted on the same movable protective cover, allowing each screen to serve different operating zone indication functions. The unified cover structure provides a universal access mechanism for all screens, enabling versatile multi-zone indication while managing complexity through a common control interface.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3177895B1Indicating device, in particular a pressure gauge

Publication Date: 2019.10.09 ASCO SAS

Figure 1~5
Figure 6~8

AI summary

The present invention concerns an indicating device (1), in particular a pressure gauge, comprising: - a basic housing (2) comprising a mechanism for driving a rotating needle indicator (10), movable relative to a dial (3), - an interface housing (5) attached to the basic housing, - at least one rotary screen (6) carried by the interface housing (5), for locating an operating area, of which the angular position can be adjusted about the axis of the needle (10), - a protective cover (7) removable attached to the interface housing (5) and making it possible, when removed, to adjust the position of the rotary screen (6) without separating the interface housing (5) from the basic housing (2).