Adjustable Plaster Edge Bead Hinge Mechanism
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Solution Overview
Problem
Existing edge plaster profiles, both metal and plastic, are costly and inflexible, requiring multiple types for different plaster thicknesses and angles, and are difficult to adjust on-site, leading to inefficiencies in production and usage.
Innovation Solution
A profile leg with a hinge mechanism that allows adjustable and fixed angles, made from plastic or a combination of materials, enabling a single type of edge plaster profile to be used for various thicknesses and angles, with a collapsible design for space-efficient storage and easy on-site adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal edge plastering profiles are used, then stability and corner reinforcement are improved, but production cost and manufacturing complexity increase
Solution Approach 1:
The patent replaces expensive metal profiles with disposable plastic profiles that achieve adequate stability for the application. The plastic profiles are designed to be sufficient for their intended use without requiring the strength and corrosion resistance of metal, thereby reducing production costs while maintaining functional adequacy.
Solution Approach 2:
The patent uses composite construction by combining plastic material with internal reinforcement elements (such as paper or fabric layers impregnated with binding agents) to create profiles that have enhanced mechanical properties compared to plain plastic, approaching the stability of metal profiles at lower cost.
2Reliability
If metal edge plastering profiles are galvanized, then corrosion resistance is improved, but production cost and manufacturing complexity increase
Solution Approach 1:
The plastic profiles are designed as disposable or single-use components that do not require long-term corrosion resistance. Since they are not intended for repeated use or exposure to corrosive environments beyond the plastering process, expensive protective coatings like galvanization are unnecessary, reducing production costs.
3Adaptability or versatility
If the angle of profile legs is changed by bending, then adaptability to different plaster thicknesses is improved, but manufacturing precision and edge quality deteriorate
Solution Approach 1:
The patent incorporates hinges at the joints between profile legs, allowing the angle to be dynamically adjusted to different positions. This mechanical articulation enables precise angle setting for different plaster thicknesses while maintaining edge quality, as the hinge provides a defined pivot point rather than relying on imperfect bending.
Solution Approach 2:
The profile is divided into separate leg segments connected by hinges, allowing independent positioning of each segment. This segmentation enables precise angle adjustment at the joint while keeping the individual leg segments straight and precise, maintaining manufacturing quality while achieving adaptability.
4Strength
If rigid PVC profile legs are used, then structural integrity is improved, but adaptability to different angles and thicknesses deteriorates
Solution Approach 1:
The patent combines rigid PVC legs with hinge joints, creating a structure where the legs themselves maintain their structural integrity and rigidity, while the connection between legs provides the necessary flexibility for angle adjustment. This resolves the contradiction by separating the function of structural strength (legs) from the function of adaptability (hinges).
5Adaptability or versatility
If multiple edge plaster profiles are stored for different thicknesses, then adaptability is improved, but storage space and device complexity increase
Solution Approach 1:
The patent designs a universal profile system where a single type of profile with adjustable hinges can serve multiple functions for different plaster thicknesses and angles. This eliminates the need to maintain multiple specialized profiles in inventory, reducing device complexity and storage requirements while maintaining broad adaptability.
6Device complexity
If a single edge plaster profile is used for all applications, then device complexity is reduced, but adaptability to different thicknesses and angles deteriorates
Solution Approach 1:
The patent incorporates hinges that allow a single profile type to dynamically adjust to different angles and configurations, enabling one profile design to cover multiple applications that would traditionally require different fixed-angle profiles, thus maintaining simplicity while achieving versatility.
Data Source
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Figure 5~6a
AI summary
Disclosed is a plaster edge bead comprising a first bead limb and a second bead limb, each of said two bead limbs having a limb face. Each of the two limb faces is delimited at opposite ends by a corner longitudinal edge and a distal longitudinal edge and each of the two bead limbs has a connecting section running along its corner longitudinal edge. The connecting sections of the two bead limbs are interconnected by a hinge that is designed to adjust and fix an angle between the bead limbs. Also disclosed in the use of a plaster edge bead of this type.