Rebar Attachment Fixture with Threaded Clamp Mechanism
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Solution Overview
Problem
Existing construction fixtures for concrete structures lack efficient and labor-saving methods to securely attach and position reinforcement bars, often requiring additional tying and spacers, which increases material and labor costs and complexity.
Innovation Solution
A cylindrical metal tube socket with a clamp mechanism that includes a hook shaped to engage around rebar, featuring a threaded shank and nut system for secure translation and clamping, allowing direct attachment to rebar without additional tying, and optional catch plates or annular flanges for enhanced engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tying methods and spacers are used to attach fixtures to rebar, then the attachment is secure, but labor and material costs increase and installation complexity increases
Solution Approach 1:
The patent combines the spacer function and the attachment mechanism into a single integrated fixture component. The fixture includes a body with rebar engagement features (such as hooks, claws, or threads) that directly attach to the rebar, while the body itself serves as the spacer that positions the reinforcement cage at the correct distance from the formwork. This eliminates the need for separate spacers and tying materials, reducing both labor and material costs while maintaining secure attachment.
Solution Approach 2:
The fixture serves multiple functions simultaneously: it acts as a spacer to maintain distance between the reinforcement cage and formwork, provides a secure attachment mechanism to the rebar, and serves as a structural component of the reinforcement system. The multi-functional design eliminates the need for multiple separate components, simplifying installation while ensuring reliable attachment.
2Reliability
If additional tying materials and spacers are used, then attachment security is maintained, but material costs increase
Solution Approach 1:
The patent merges the spacer function and attachment mechanism into a single integrated fixture, eliminating the need for separate spacers and tying materials. The fixture body itself serves as the spacer while its engagement features provide secure attachment to the rebar, thereby reducing the total quantity of materials required without compromising attachment security.
Solution Approach 2:
The fixture performs multiple functions with a single component: spacing, attachment, and structural support. This multi-functionality reduces the number of separate materials needed, as the same component that positions the reinforcement cage also secures it to the rebar, thereby reducing overall material quantity and cost.
3Reliability
If traditional attachment methods are used, then rebar positioning is secure, but labor costs and installation time increase
Solution Approach 1:
The fixture is designed to be pre-assembled with the rebar engagement features already in place, allowing for quick attachment to the reinforcement cage. The integration of the spacer and attachment mechanism means that during installation, workers simply need to position and secure the fixture, without needing to separately install spacers and tie materials, thereby reducing installation time and increasing productivity.
Solution Approach 2:
By combining the spacer and attachment mechanism into one fixture, the installation process is simplified from multiple steps (installing spacers, then tying rebar) to a single step (securing the integrated fixture). This reduces the number of operations required, lowering labor costs and increasing installation efficiency while maintaining secure rebar positioning.
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
The solution enables direct attachment to rebar, reducing labor and material costs, optimizing packaging and transportation, and providing self-regulation within the concrete structure without additional spacers, enhancing the structural integrity and ease of installation.
Implementation Method 1
The opening is a threaded opening configured to threadably engage the threaded shank of the hook
Implementation Method 2
The clamp is configured to clamp the rebar against the fixture
Data Source
Figure 1
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AI summary
A fixture (10) is provided for casting into a concrete structure (12) including reinforcement bars (14). The fixture (10) includes a socket (16), and a clamp (18). The clamp (18) is configured to sandwich a reinforcement bar (14) against the fixture (10) to position the socket (16) relative to the reinforcement bar (14) prior to casting the fixture (10) and the reinforcement bar (14) into a concrete structure (12).