Free Float Handguard Barrel Locker Design
Solution Overview
Problem
Conventional handguards for rifles cause barrel distortion and gas tube damage due to external forces, and their installation is complex and weight-intensive, lacking effective support for the gas tube.
Innovation Solution
A free float handguard design featuring a barrel locker and handguard locker that securely encircle the barrel without external support, allowing for easy installation and integration with existing firearms, with a rotatable mechanism to guide and support the gas tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the conventional handguard is mounted around the barrel with both ends supported by the barrel, then the handguard can protect the shooter's hand from barrel heat, but external forces applied to the handguard will transmit to the barrel causing distortion and bullet deflection
Solution Approach 1:
The invention extracts the support function from the barrel by introducing a dedicated support ring that independently supports the handguard. This separates the handguard's protective function from the barrel's structural function, preventing force transmission to the barrel while maintaining hand protection.
Solution Approach 2:
The handguard mounting structure is segmented into distinct functional components: the support ring for bearing external forces, the locking ring for securing the handguard, and the handguard body for protection. This segmentation allows each component to perform its specific function without interfering with others, particularly preventing force transmission to the barrel.
2Adaptability or versatility
If the locking ring is modified to include a slot for the gas tube to pass through, then the gas tube can be integrated with the handguard, but the size of the locking ring and handguard will be increased
Solution Approach 1:
The gas tube integration is achieved by routing the gas tube through the longitudinal axis of the support ring rather than through the lateral locking ring. This dimensional change allows gas tube integration without increasing the handguard's external dimensions, as the gas tube passes through the central void of the support ring structure.
3Adaptability or versatility
If the gas tube is guided through the locking ring, then the gas tube can be retained in position, but the locking ring will be supported by the gas tube causing external forces to transmit to the gas tube and cause damage
Solution Approach 1:
The retention function is extracted from the locking ring and assigned to the support ring. The support ring's longitudinal structure is specifically designed to retain the gas tube along its axis, while the locking ring focuses solely on securing the handguard body. This functional separation ensures the gas tube is retained without being subjected to external forces.
Solution Approach 2:
The support ring acts as an intermediary structure between the handguard and the gas tube. It provides a dedicated pathway and retention mechanism for the gas tube without transmitting external forces to it, as the support ring's structural design isolates the gas tube from lateral loads.
4Ease of operation
If the upper casing and lower casing are detachably coupled with fasteners, then the handguard can be assembled and disassembled, but the overall weight of the handguard increases and installation becomes complicated
Solution Approach 1:
The upper and lower casings are merged into a single integrated handguard body without requiring detachable fasteners. This unified structure eliminates the weight and complexity of multiple fastening components while maintaining the handguard's protective function and ease of installation as a single unit.
Data Source
AI summary
A free float handguard for a firearm having a barrel includes a handguard body and a locking arrangement. The locking arrangement includes a barrel locker and a handguard locker. The barrel locker includes a first tubular locker adapted for coaxially coupling at a fixed end of the barrel, and a second tubular locker coaxially and rotatably coupled at the first tubular locker. The handguard locker has a rear portion coaxially coupled at the first tubular locker to prevent the handguard locker from being rotated therearound, and a front portion engaged with the second tubular locker to prevent the second tubular locker from being rotated around the first tubular locker, wherein a first end portion of the handguard body is coupled at the handguard locker for locking up the handguard body around the barrel in a free float manner.