Display Mounting Assembly With Two-Axis Pivot Control
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Solution Overview
Problem
Current display panel mounting systems in vehicles, such as tractors, only allow for adjustment about a single axis, limiting flexibility and adaptability for different operators.
Innovation Solution
A mounting assembly with a dome-shaped lower and upper bearing member and a carrier member, allowing for two degrees of freedom pivoting through a combination of tabs, apertures, and a bolt system, enabling significant movement without hardware loosening, and concealing the wiring harness for a clean design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display panel mounting allows adjustment about a single axis, then the structure is simple, but the adaptability for different operators is limited
Solution Approach 1:
The mounting assembly transitions from a fixed single-axis pivot to a dynamic two-degree-of-freedom system using a spherical bearing interface. The carrier member can pivot about the first axis (longitudinal) and second axis (lateral) independently, allowing the display panel to be positioned at multiple orientations to accommodate different operator preferences and seating positions.
Solution Approach 2:
The invention adds a second rotational dimension to the mounting system. While conventional mountings only allow rotation about one axis, this design enables rotation about two perpendicular axes (first and second transverse axes), creating a two-degree-of-freedom system that provides adjustment in multiple directions simultaneously.
2Ease of operation
If multiple thumb knobs are used for each direction of movement, then the adjustment control is precise, but the hardware may loosen over time
Solution Approach 1:
The mounting assembly incorporates a self-locking mechanism through the spherical bearing design and friction engagement between the carrier member and bearing surfaces. The adjustment mechanism uses a single thumb knob that operates both pivot axes simultaneously, and the spherical interface maintains constant contact pressure to prevent loosening while allowing easy repositioning.
Solution Approach 2:
The system uses a dynamic friction-based locking mechanism rather than rigid mechanical locks. The spherical bearing maintains continuous contact with the carrier member, creating constant friction that prevents loosening while allowing controlled adjustment. The single thumb knob applies force that is distributed through the spherical interface, providing stable positioning without multiple separate locking mechanisms.
3Reliability
If a robust bolt and locknut system is used to prevent hardware loosening, then the reliability is improved, but the ease of repositioning may be reduced
Solution Approach 1:
The mounting assembly uses a self-adjusting spherical bearing system that maintains reliable contact through its geometric design. The carrier member engages with the spherical bearing surfaces at multiple points, creating inherent stability without requiring tight locking. The single thumb knob provides sufficient adjustment force, and the spherical interface distributes loads to prevent hardware loosening while allowing easy repositioning.
Solution Approach 2:
The system changes the friction parameter dynamically through the spherical bearing design. The contact area and normal force between the carrier member and bearing surfaces adjust automatically based on the adjustment position and operational loads, providing reliable holding at all positions without requiring over-tightened hardware that would hinder repositioning.
Data Source
AI summary
A display panel mounting assembly includes a dome-shaped lower bearing member on a support member, an upper bearing member, and a carrier member attached to the display panel and held between the upper and lower bearing members. The lower bearing member has a central bore and a pair of tabs projecting from opposite sides of the bore. The carrier member has a opening which receives the tabs. A stop post projects from the support member adjacent the bearing member. An aperture which receives the post is formed in the carrier spaced apart from the opening. The opening and the tabs cooperating to control pivoting of the carrier member with respect to the support member in one degree of freedom. The aperture and the post cooperate to control pivoting of the carrier member in a second degree of freedom.