Scraper Blade Lock Assembly for Fast Replacement and Secure Clamping
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Solution Overview
Problem
Existing scraping tools require cumbersome and insecure assembly processes for replacing scraper blades, with multiple screws causing inconvenience and risking blade detachment during high-impact scraping.
Innovation Solution
A scraping tool design featuring a jaw clamp with a fastener pivot mechanism, a control button, and a guide block system allowing for quick blade replacement and enhanced stability, utilizing a swinging jaw clamp and vertical sliding guide block to secure the blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple screws are used to secure the scraper blade, then the blade attachment strength is improved, but the assembly and replacement complexity increases
Solution Approach 1:
The fastening system is segmented into a jaw clamp with multiple jaws that can independently engage the blade, allowing the blade to be secured at multiple points simultaneously. This segmentation enables strong attachment while simplifying the operation to a single fastening action rather than multiple screw operations.
Solution Approach 2:
The jaw clamp acts as an intermediary mechanism between the user's fastening action and the blade. Instead of directly applying multiple screw forces, the jaw clamp mediates by distributing the fastening force through multiple jaws that converge on the blade, achieving strong attachment with a single operational step.
2Reliability
If screws are used to tighten the blade, then the blade security is improved, but the time required for blade replacement increases
Solution Approach 1:
The jaw clamp incorporates a dynamic fastening mechanism where the jaws can move from an open position for easy blade insertion to a closed position for secure blade attachment. This dynamic action allows the blade to be quickly inserted and then immediately secured through a single fastening motion, dramatically reducing replacement time while maintaining blade security.
Solution Approach 2:
The jaw clamp is pre-positioned and ready to engage the blade as it is inserted. The multiple jaws are already in place and will automatically contact the blade during insertion, so no additional positioning or alignment actions are needed after blade insertion. This preliminary arrangement enables rapid replacement while ensuring secure attachment.
3Device complexity
If the blade is located on one side and secured with screws, then the assembly structure is simplified, but the blade may detach during high-impact scraping
Solution Approach 1:
The jaw clamp applies localized pressure at multiple specific points where the jaws contact the blade. Instead of distributing force uniformly or relying on a single attachment point, each jaw concentrates force at its contact point, creating multiple localized securement zones that prevent blade detachment during high-impact scraping while maintaining a simple overall structure.
Solution Approach 2:
The jaw clamp features asymmetric jaw positioning and orientation designed to match the asymmetric location of the blade on one side. The jaws are arranged to converge from different directions toward the blade's position, creating an asymmetric fastening pattern that provides superior retention for the asymmetrically positioned blade while keeping the structure simple.
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
Enables rapid and secure assembly and replacement of scraper blades, ensuring stability during use and reducing the risk of blade detachment, thereby improving user convenience and operational efficiency.
Implementation Method 1
fasteners by which the two sides of the jaw clamp are attached into the groove of the scraping section and as pivot to allow the jaw clamp to swing back and forth within the groove
Implementation Method 2
a long guide hole penetrating through the back groove to engage a long guide block inside to provide vertical sliding
Implementation Method 3
the pillar at the bottom edge will push against the arm at the back end of the jaw clamp to generate a strong force for the front of the of the jaw clamp to grasp the scraper blade
Data Source
AI summary
The invention is related to a scraping tool that can be assembled and replaced for scraper blade quickly. The scraping tool in general comprises a stick for hand grasp and a scraping section in the front. The invention mainly uses an arm of suitable length extended from the back end of a jaw clamp toward the middle. It uses fasteners to be located inside the groove in the back of the scraping section. The fastener is also used as pivot for the arm to swing back and forth. On the arm in the back of the jaw clamp, there is a control button that provides vertical pushing force in the back of the jaw clamp and allows strong clamping force in the front of the jaw clamp onto the scraper blade to achieve stable assembly and fast replacement for scraper blade.