Construction Machine Wiper Mode Display for Error-Free Selection
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Solution Overview
Problem
Operators of construction machines, such as hydraulic excavators, face difficulties in easily selecting and confirming wiper motion modes due to the lack of intuitive interfaces, leading to potential erroneous mode selection when using a single push switch for wiper operation.
Innovation Solution
A wiper operation system with a display screen showing icons for different wiper motion modes and an operation reception unit that allows selection through a dial switch and push switches, enabling operators to visually confirm and switch between modes, including continuous, intermittent, and one-time wiping motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single push switch is used for wiper operation in construction machines, then the device complexity is reduced and ease of manufacture is improved, but the ease of operation deteriorates and measurement precision of mode selection worsens
Solution Approach 1:
The patent introduces a display device as an intermediary between the push switch and the wiper device. The display shows icons representing different wiper motion modes, serving as a visual mediator that helps the operator understand which mode will be activated by a given number of push operations, thereby improving ease of operation without adding physical complexity to the switching mechanism
Solution Approach 2:
The system provides visual feedback by displaying icons that change based on the number of push operations detected. The display shows different icons or highlights different modes depending on how many times the push switch has been pressed, giving the operator immediate feedback about the current mode and helping prevent erroneous selection
2Device complexity
If a single push switch is used for wiper operation, then the device complexity is reduced, but the reliability of mode selection deteriorates due to potential erroneous operation
Solution Approach 1:
The display device provides visual feedback showing which mode is currently active and what mode will be selected after the next push operation. This feedback mechanism allows the operator to confirm the intended mode before execution, significantly improving reliability of mode selection while keeping the physical switching mechanism simple
Solution Approach 2:
The system prevents erroneous operation by requiring the operator to observe the displayed icon confirmation before the mode takes effect. The display shows a preview of the upcoming mode change, allowing the operator to cancel or confirm the operation, thus preventing wrong mode selection before it occurs
3Ease of manufacture
If multiple pushing operations are required to select different wiper modes, then the ease of manufacture is improved, but the loss of information increases as the operator cannot immediately recognize available modes
Solution Approach 1:
The display device performs preliminary action by showing all available wiper motion modes and their corresponding icons before the operator makes a selection. The system pre-displays the information about different modes (intermittent, continuous, one-time wiping) so the operator can make an informed decision without needing to remember or guess the available options
Solution Approach 2:
The display acts as an information intermediary that bridges the gap between the simple push switch and the multiple wiper modes. It visually represents the relationship between push operations and mode selection, making the available modes and their selection method immediately recognizable without complicating the physical interface
Data Source
AI summary
A wiper operation system for a construction machine, enabling a plurality of wiper operating modes set for the operation of the wiper device to be easily checked and being capable of preventing erroneous selection of the wiper operating mode, includes a display, an operation reception unit that receives a mode selection operation for selecting one wiper motion mode from among a plurality of wiper motion modes, and a wiper control section that makes the wiper device perform a motion in the selected wiper motion mode. The display includes a wiper motion display unit performing a display of a plurality of icons corresponding to a plurality of wiper action modes respectively, and an identification display enabling the icon of the selected wiper action mode to be identified.