Level Frame Reinforcement for Calibration-Free Vial Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing levels have a weak central frame section due to material removal for vial installation, leading to instability and the need for complex calibration for accurate vial mounting, which increases manufacturing costs and susceptibility to damage.
Innovation Solution
Incorporating an integral inner horizontal wall and vertical wall within the frame to reinforce the weakened areas, along with an external brace and CNC machining for precise vial positioning without adhesives, ensuring calibration-free installation and enhanced structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If material is removed from the frame to create a notch for vial installation, then the vial can be positioned for viewing from multiple angles, but the frame strength and stability are significantly reduced
Solution Approach 1:
The frame is divided into multiple walls (front wall, rear wall, first and second sidewalls) that are selectively removed or modified to create the notch. This segmentation allows the notch to be formed while preserving the structural integrity of the remaining frame sections, preventing complete frame failure at the notch location.
Solution Approach 2:
The notch is created with specific geometric characteristics - the bottom of the notch is positioned at a greater distance from the rear wall than from the front wall, and the sidewalls have specific thicknesses. This local variation in geometry optimizes both vial accessibility and frame strength distribution, concentrating material where needed for structural support.
2Measurement precision
If traditional multi-step calibration methods are used for vial mounting, then accurate measurement readings can be achieved, but manufacturing complexity and costs increase
Solution Approach 1:
The frame is pre-formed with a notch that has predetermined geometric relationships - the bottom distance from rear and front walls, and the sidewall thicknesses are established during frame manufacturing. This preliminary structuring eliminates the need for subsequent calibration adjustments, as the vial mounting location is inherently accurate by design.
Solution Approach 2:
The frame structure itself provides the mounting references and positioning features needed for accurate vial installation. The specific geometric characteristics of the notch (bottom positioning, sidewall dimensions) serve as self-contained mounting guides, eliminating the need for external calibration tools or procedures.
Data Source
AI summary
A level including an elongate hollow frame with two sidewalls and a topwall extending therebetween. A topnotch is formed by removal of a topwall section and adjacent sections of sidewalls including notch-defining bottom and side edges. A central vial is within the topnotch. The frame includes an inner horizontal wall extending between the sidewalls at the notch-defining bottom edges. A central-vial reference surface is formed in the inner horizontal wall parallel to the top and bottom measuring surfaces and defining a notch-bottom. The central vial is supported against the central-vial reference surface in accurate orientation without calibration. The central vial is secured with respect to the inner horizontal wall by mechanical fasteners. The frame further preferably includes an integral inner vertical wall extending between the top and bottom walls thereby reinforcing the frame along the frame length.