Working Machine Console Box Wobble Suppression
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Solution Overview
Problem
Existing console box designs for working machines like hydraulic excavators face issues with wobble due to insufficient fastening, which increases the number of fitting regions, complicating assembly and affecting aesthetic quality.
Innovation Solution
A console box design featuring a box cover with intercoupling first and second cover halves using fitting portions, supported by a support portion on the box body to prevent wobble without excessive additional fitting regions, maintaining a fine appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the number of fitting portions is increased to suppress wobble of the second cover half, then the stability of the console box is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
A support portion is introduced as an intermediary element between the box body and the second cover half. This support portion provides additional stabilization without requiring multiple fitting portions on the cover halves themselves, thus suppressing wobble while maintaining simplicity of the cover half structure
Solution Approach 2:
The support portion extends from the box body into the interior space of the console box, utilizing the third dimension (depth) to provide support. This allows stabilization without adding more fitting portions in the horizontal plane, avoiding increased complexity
2Reliability
If the number of fitting portions is increased to suppress wobble, then the reliability of the console box fixation is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The support portion acts as a mediator that provides reliable fixation by contacting the box body and supporting the second cover half internally. This approach achieves secure fixation without modifying the cover halves with multiple fitting portions, thereby maintaining ease of molding
Solution Approach 2:
The fixation function is segmented into two independent parts: the fitting portions for coupling cover halves and the support portion for stabilization. This segmentation allows the cover halves to be molded simply while the support portion provides the necessary fixation reliability
3Stability of the object's composition
If the number of fitting portions is increased to suppress wobble, then the stability of the console box is improved, but the assembling work becomes more difficult
Solution Approach 1:
The support portion serves as a pre-installed intermediary element on the box body that guides and facilitates the assembly of the second cover half. It provides stable support during assembly without requiring multiple precise fitting operations, thus improving ease of assembly while maintaining stability
Data Source
AI summary
Provided is a working machine including a console box restrained from wobble. The working machine includes a machine body having an operator's seat and a console box at a side of the operator's seat. The console box includes a box body and a box cover covering the box body. The box cover internally includes a first cover half installed on the box body with first fitting portions and a second cover half internally including second fitting portions fitted with the respective first fitting portions. The second cover half abuts on the first cover half and coupled to the first cover half by respective interfittings of the first and second fitting portions. The box body includes a support portion making contact with an inner surface of the second cover half to support the second cover half.