Crossbow Detachable Limb Assembly Mechanism
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Solution Overview
Problem
Crossbows are bulky and unwieldy for transport and storage due to their general arrangement, which makes them difficult to handle and store compactly, despite existing detachable limb assemblies that aim to address this issue.
Innovation Solution
A crossbow design featuring a rail assembly, a limb assembly, a retention member, and a release member that allows for quick assembly and disassembly without tools, with adjustable force engagement to compensate for wear and ensure secure assembly, utilizing a release member attached to the rail and a retention member attached to the riser or vice versa, enabling easy detachment and reattachment of the limb assembly from the rail assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the crossbow is made with a detachable limb assembly, then compact storage and easy transport are achieved, but the assembly and disassembly process becomes complex and time-consuming
Solution Approach 1:
The crossbow is divided into two main segments: the rail assembly and the limb assembly. The limb assembly can be detached from the rail assembly, allowing the crossbow to be stored or transported in a compact configuration. This segmentation directly addresses the need for reduced storage volume while maintaining the functional integrity of each component.
Solution Approach 2:
The retention member is extracted as a separate, movable component that can be independently operated. By removing the retention member from a fixed locking mechanism, the design enables quick release of the limb assembly without requiring complex tools or procedures, thus simplifying the disassembly process while maintaining secure attachment during use.
2Ease of operation
If a detachable limb assembly is implemented, then transport convenience is improved, but the reliability of assembly connection deteriorates
Solution Approach 1:
The retention member is designed to automatically engage with the release member when the limb assembly is attached to the rail assembly. This preliminary engagement action ensures that the connection is securely established before use, maintaining reliability while allowing for quick detachment when needed for transport.
Solution Approach 2:
The retention member and release member act as intermediary components that mediate between the limb assembly and rail assembly. These intermediaries provide a reliable connection mechanism that can be quickly engaged and disengaged, ensuring both transport convenience and assembly reliability without requiring permanent attachment.
3Productivity
If the retention member is made movable for quick release, then assembly speed is improved, but the force engagement to prevent wear is reduced
Solution Approach 1:
The retention member is designed to be movable between engaged and disengaged positions, allowing quick assembly and disassembly. When engaged, the retention member provides sufficient force to maintain a secure connection and prevent wear. The dynamic nature of the retention member enables it to transition between providing strong engagement and allowing quick release, thus balancing assembly speed with connection strength.
Data Source
AI summary
A crossbow includes a rail assembly and a limb assembly that can be assembled together and disassembled from one another. A release member is rigidly attached to one assembly and a retention member is attached to the other assembly. When the crossbow is assembled the release member is in a retained position; when the crossbow is disassembled the release member is removed from its retained position. In a release position the retention member permits movement of the release member into or out of the retained position; in a retention position the retention member prevents movement of the release member out of the retained position. The release and/or retention members can be adjusted to alter the force urging together the rail and limb assemblies. The retention member can be moved between the release and retention positions without using any tool.