Plasterboard Screw Anchor Holder for Multi-Blade Torque Transfer
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Solution Overview
Problem
Existing screw anchors are limited in accommodating a variety of turning tool blades, particularly those with different geometries and sizes, which restricts their versatility when used with soft building materials like plasterboards and fiber cement boards.
Innovation Solution
A screw anchor design featuring a base body with a large external thread and a tool holder with groove-shaped depressions that can accommodate various blade types, including slotted, Phillips, and hexalobular, allowing for secure engagement and torque transmission without the need for specific optimization for each screw head profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the tool holder is optimized for a specific screw head drive profile to transmit high torque, then torque transmission capability is improved, but adaptability to different blade types deteriorates
Solution Approach 1:
The tool holder is designed with a cross-shaped opening that can accommodate multiple blade types (slotted, Phillips, Torx) through a universal geometry. The engagement areas and groove-shaped recesses create a multi-functional interface that works with different blade profiles without requiring separate optimized designs for each type, thus achieving both adaptability and sufficient torque transmission.
Solution Approach 2:
The groove-shaped recesses are designed with specific geometric parameters (depth, width, angle of inclination between 13° to 20°) that allow them to adapt to different blade sizes and types. By optimizing these parameters, the tool holder maintains secure engagement across various blade geometries while transmitting adequate torque for soft building materials.
2Strength
If the external thread has relatively large thread flanks to provide sufficient hold in soft building materials, then anchoring strength is improved, but the torque that can be applied during screwing increases, requiring a more specialized tool holder
Solution Approach 1:
The tool holder employs a universal cross-shaped opening design that eliminates the need for specialized configurations for different blade types. This multi-functional approach allows the same tool holder structure to accommodate slotted, Phillips, and Torx blades while working with the large thread flank screw anchors designed for soft building materials.
Solution Approach 2:
The tool holder is segmented into distinct functional zones: engagement areas for blade contact, groove-shaped recesses for secure fitting, and a cross-shaped opening for overall blade reception. This segmentation allows each zone to be optimized for its specific function while contributing to the overall versatility of the tool holder.
3Adaptability or versatility
If the tool holder accommodates a wide variety of blade geometries and sizes, then versatility is improved, but the secure engagement and torque transmission may be compromised
Solution Approach 1:
Different regions of the tool holder have different geometric properties optimized for specific functions. The engagement areas have flat surfaces for blade contact, the groove-shaped recesses have inclined bottoms for secure fitting, and the cross-shaped opening provides overall containment. This local quality optimization ensures reliable engagement across various blade types.
Solution Approach 2:
The groove-shaped recesses are designed with variable parameters including depth, width, and angle of inclination (13° to 20°) that can accommodate different blade sizes and geometries. These parameter variations allow the same tool holder structure to securely engage diverse blade types while maintaining reliable torque transmission.
Data Source
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AI summary
The invention relates to a screw anchor (1) with an external thread (3) for screwing the screw anchor (1) into a plasterboard. The screw anchor (1) has a tool holder (9) with four engagement areas (10) for receiving a cross-shaped blade of a lathe tool. Webs (11) running in the longitudinal direction are formed between the engagement areas (10), each of which has a groove-shaped depression (12) which is each arranged centrally between two engagement areas (10) on the web (11), so that a wide variety of types of blades, For example, slotted, Phillips or TX blades can be inserted into the tool holder (9).