Self-Drilling Anchor Assembly for Single-Step Concrete Fixing
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Solution Overview
Problem
The existing anchor assembly installation process for concrete structures is time-consuming, requiring separate steps for drilling and inserting anchors, and often uses expensive drill bits that wear out quickly.
Innovation Solution
A self-drilling anchor assembly that combines a drill bit and an anchor, where the anchor is attached to the drill bit, allowing for simultaneous drilling and anchoring, with a mechanical engaging structure and helical thread formation for easy attachment and debris expulsion, reducing the need for separate tools and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate drill bits and anchor assemblies are used, then drilling and anchoring can be performed with dedicated tools, but installation time increases due to multiple steps and tool changes
Solution Approach 1:
The patent combines the drill bit and anchor assembly into a single integrated unit. The drill bit includes a shank, drill head, and threaded tail, while the anchor is positioned over and attached to the drill bit, allowing both drilling and anchoring functions to be performed simultaneously without tool changes or separate operations.
2Duration of action of stationary object
If expensive carbide-tipped drill bits are used for concrete drilling, then drilling durability is improved, but material cost increases
Solution Approach 1:
The integrated drill bit is designed as a disposable component that remains in the substrate after anchoring. Since the drill bit is not retrieved for reuse, it can be made from less expensive materials rather than requiring durable carbide-tipped construction, significantly reducing material costs while maintaining functional performance for the single-use application.
3Reliability
If multiple separate components are used for anchoring, then each component can be optimized for its specific function, but device complexity increases
Solution Approach 1:
The drill bit and anchor are combined into a single integrated assembly where the drill bit includes a shank, drill head, and threaded tail, and the anchor is positioned over and attached to the drill bit. This integration maintains the functional optimization of each component while simplifying the overall system to a single unit that performs both drilling and anchoring.
4Ease of manufacture
If traditional drilling and anchoring procedures are used, then each step can be performed with appropriate tools, but the number of操作步骤 increases
Solution Approach 1:
The integrated drill bit and anchor assembly performs multiple functions automatically during a single installation operation. The drill bit drills the hole while the anchor simultaneously engages with the substrate, eliminating the need for separate drilling and anchoring steps and reducing manual intervention to a single continuous operation.
Data Source
AI summary
A self-drilling anchor assembly including a drill bit and an anchor positioned over and attached to the drill bit. In various embodiments, the drill bit includes a shank, a drill head integrally connected to one end of the shank, and a threaded tail integrally connected to an opposite end of the shank. The tail includes a mechanical engaging structure that is engageable by a tool to rotate the drill bit, and a helical thread formation to facilitate attachment of a securing device such as nut and washer to the tail of the drill bit. The anchor includes an elongated generally tubular body including an inner surface defining a longitudinally extending inner channel, and a head integrally connected to and extending from a first end of the body. The drill bit is configured to remain in the anchor and in the substrate after installation of the anchor assembly in the substrate.