Compound Bow Rigid Frame Force Compounding System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional bows lack the mechanical advantage and ease of use provided by compound bows, which are more powerful and easier to draw due to their pulley and cam systems, but they still require flexible limbs for power storage and delivery.
Innovation Solution
A compound bow design featuring a rigid frame with a force compounding system and draw string guide system, including pulleys, cams, and a dual feed wheel mechanism that allows for efficient energy storage and release, eliminating the need for flexible limbs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a compound bow uses a rigid frame with pulleys and cams, then mechanical advantage and ease of use are improved, but the need for flexible limbs for power storage is eliminated
Solution Approach 1:
The bow is divided into separate functional components: a rigid frame structure, a force compounding system with pulleys and cams, and a draw string guide system. This segmentation allows each component to perform its specific function independently, eliminating the need for flexible limbs while maintaining ease of operation.
Solution Approach 2:
Pulleys and cams act as intermediary mechanical elements between the archer's input force and the arrow propulsion. These intermediaries provide mechanical advantage, making the bow easier to draw while transferring force efficiently through the rigid frame structure.
2Power
If a compound bow uses a rigid frame with force compounding system, then power delivery is improved, but the traditional flexible limb structure is replaced
Solution Approach 1:
The traditional flexible limb mechanical system is replaced with a rigid frame structure combined with a force compounding system using pulleys and cams. This substitution maintains or enhances power delivery while fundamentally changing the structural approach from flexible to rigid.
Solution Approach 2:
The bow's structural parameters are changed from flexible limbs to a rigid frame with movable pulley-cam components. This parameter change allows the system to store and release energy through mechanical advantage rather than elastic deformation, improving power delivery characteristics.
3Adaptability or versatility
If a compound bow separates force compounding system and draw string guide system, then functional clarity is improved, but the number of components increases
Solution Approach 1:
The bow system is segmented into distinct functional subsystems: the force compounding system (pulleys and cams) and the draw string guide system (separate guides). This segmentation improves functional clarity by allowing each subsystem to be optimized independently for its specific purpose.
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 compound bow design enhances power and ease of use by storing energy in a rigid frame and releasing it efficiently through a mechanical advantage system, providing consistent and powerful arrow propulsion.
Implementation Method 1
A compound bow typically includes pulleys and cams that provide added mechanical advantage. As a result, a compound bow may be both easier to draw and also more powerful than prior bow technology.
Data Source
AI summary
In some embodiments, a compound bow comprises a frame, a first limb supported by the frame and a second limb supported by the frame. The first limb supports a first rotatable member, and the first rotatable member comprises a cam. The compound bow further comprises a second rotatable member, a first pulley and a second pulley. A power cable is in communication with the cam. A bowstring contacts the first rotatable member, the second rotatable member, the first pulley and the second pulley. In some embodiments, the first pulley is supported by the first limb.