Crossbow Cocking Handles Ergonomic Vertical Grip
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Solution Overview
Problem
Existing crossbow cocking devices often compromise user comfort and ergonomics during the cocking operation due to suboptimal handle design.
Innovation Solution
A crossbow cocking system featuring a sled with bowstring retainers and pulleys, along with ergonomically adapted handles that engage an elongated cocking cable, allowing users to operate the handles in a vertical hand position, enhancing comfort and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple pulley systems with conventional handles are used, then the device complexity is reduced, but user comfort and ergonomics deteriorate
Solution Approach 1:
The handle design applies local quality by specifically optimizing the grip area and operational interface while maintaining the simplicity of the overall pulley system. The ergonomic features are concentrated in the handle components that directly contact the user, without complicating the entire cocking device structure.
Solution Approach 2:
The handle design incorporates dynamic considerations by allowing natural hand movements and positioning during the cocking operation. The handles are designed to accommodate the range of motion and force application patterns of the user's hand, improving comfort without requiring complex mechanical adjustments.
2Ease of operation
If conventional handles are used, then the manufacturing process is simplified, but user ergonomics during cocking operation deteriorate
Solution Approach 1:
The ergonomic improvements are localized to specific regions of the handle that interact with the user's hand, such as the grip surface and operational interface. This allows for targeted manufacturing processes that focus complexity only where needed, rather than requiring complex manufacturing throughout the entire handle structure.
3Ease of operation
If force is concentrated at single points during cocking, then the cocking operation becomes more direct, but user strain increases
Solution Approach 1:
The force application is segmented across multiple contact points on the handle rather than concentrated at a single point. The handle design includes multiple grip areas and force application zones that distribute the cocking force across different parts of the user's hand, reducing strain on any single point.
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 system improves user comfort and ergonomics during crossbow cocking by distributing the force effectively through the handles, reducing strain and improving the overall cocking operation experience.
Implementation Method 1
a first pulley rotatably engaged with the first arm; and a second pulley rotatably engaged with the second arm
Data Source
AI summary
Provided is a crossbow cocking system comprising a sled, an elongated cocking cable, a first handle, and a second handle. The sled may have a first side having a first bowstring retainer, a first arm having a first set of handle engagement features adapted for engagement with a first handle, and a first pulley rotatably engaged with the first arm; and a second side having a second bowstring retainer, and a second arm having a second set of handle engagement features adapted for engagement with a second handle, a second pulley rotatably engaged with the second arm. The first and the second handle may each be engaged to the elongated cocking cable, and be ergonomically adapted to permit an associated user to operate the each handle during a cocking operation with a hand in a vertical hand position.