Wedge-Shaped Holding Device for Display Unit Assembly

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Solution Overview

Problem

Conventional display devices in coaches, particularly those with pivoting LCD monitors, face difficulties in installation and removal due to their high weight and the risk of contamination in dirty environments, as the entire structural unit must be dismantled for maintenance, complicating the process.

Innovation Solution

A holding device with wedge-shaped recesses and pivoted clamping levers allows for easy separation and secure fastening of the display unit, compensating for play and tolerances, and includes latching springs and clamping screws for quick assembly and secure fixing, with hook-shaped extensions for temporary holding during assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the display unit, pivoting device and holder form a structural unit that is installed together, then the installation is simplified, but the weight increases and makes installation and removal more difficult

Engineering Contradiction:
Improveinstallation complexityVSAvoiddisplay device weight
Core Design Contradiction:
Device complexityVSWeight of moving object

Solution Approach 1:

The display device is divided into separate components: the holder can be installed independently on the roof structure, and the display unit with pivoting mechanism can be mounted separately onto the holder. This segmentation allows the holder to remain fixed while the display unit can be easily attached or detached, reducing the practical weight handling requirements during installation and maintenance operations.

Inventive Principle:
Principle #1Segmentation

2Strength

If the holder is mounted on steel elements of the roof construction, then the holder is securely fixed, but the display unit is exposed to contamination and damage risks in the dirty environment

Engineering Contradiction:
Improveholder fixation strengthVSAvoidcontamination risk to display unit
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

By separating the holder (which remains in the dirty environment) from the display unit (which is sensitive to contamination), the design allows the holder to be securely mounted on roof steel elements while the display unit can be easily removed for cleaning or protected from direct exposure to contaminants during installation and maintenance phases.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If the entire display device must be dismantled for maintenance work, then structural integrity is maintained, but maintenance accessibility decreases and process complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidmaintenance accessibility
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The holder is designed as a permanent structural component that remains installed on the roof, while the display unit is made separable through quick-release mounting mechanisms. This allows maintenance personnel to access and service the display unit by simply detaching it from the holder without disturbing the holder's structural installation, maintaining overall structural integrity while greatly improving maintenance accessibility.

Inventive Principle:
Principle #1Segmentation

4Ease of manufacture

If conventional mounting methods are used, then installation is straightforward, but play and tolerances cause rattling even after multiple installation and removal cycles

Engineering Contradiction:
Improveinstallation simplicityVSAvoidmounting stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The mounting system incorporates dynamic adjustment capabilities through pivoted clamping levers that can be tightened to compensate for wear and tolerances. The latching springs provide continuous adaptive pressure to maintain secure engagement, allowing the mounting system to self-adjust and maintain reliability even after multiple installation and removal cycles.

Inventive Principle:
Principle #15Dynamics

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

Facilitates easy assembly and disassembly of the display device without rattling, reduces contamination risks, and ensures secure fixation of the display unit, enhancing maintenance accessibility and reducing installation complexity.

Implementation Method 1

the tensioning levers have latching springs which, when the tensioning levers are closed, engage in further recesses in the receiving elements of the holding device

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

receiving elements connected to the holding element, which have essentially wedge-shaped or V-shaped recesses, which serve to receive correspondingly wedge-shaped axis sections of the display unit

Methodology Applied
Scientific EffectWedge: Wedge

Implementation Method 3

pivoted clamping levers for clamping the axle sections in the recesses by exerting a force on the axle sections essentially in the direction of the narrowing of the wedge-shaped recesses

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentEP1879770B1Holding device for fastening a display unit, display unit and display device
Publication Date: 2011.09.14 ROBERT BOSCH GMBH
  • EP1879770B1 patent drawingFigure 1
  • EP1879770B1 patent drawingFigure 2
  • EP1879770B1 patent drawingFigure 3

AI summary

A holding device (2) for mounting a display unit (1) comprises a holding element (21) and receiving elements (22, 23) linked to the holding element and having substantially wedge-shaped or V-shaped recesses (24) for receiving axis sections (12) of the display unit (1) which have a corresponding wedge shape. Also disclosed are a display unit (1) and an assembly arrangement. The advantage of the invention is that the display unit and the holder can be easily separated. This separation in turn is advantageous because it makes it easier to assemble the display device and, if necessary, also subsequently disassemble the display unit or the entire display device. This is achieved, in particular, in that the holder for receiving the monitor or display unit is mounted separately from the same, and the monitor can be fastened in the holder at a later point in time.