Archery Bow Eccentric Alignment With Swappable Cam Shims
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Solution Overview
Problem
Existing archery bows require cumbersome and time-consuming processes to adjust cam spacing for tuning, often necessitating specialized tools and expertise, which hinder quick and easy adjustments to the shooting plane.
Innovation Solution
The introduction of members with shim portions that can be easily swapped or replaced to vary the spacing between eccentrics and limbs, allowing for straightforward adjustment of the shooting plane without disassembling the bow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional cam spacing adjustment methods are used, then manufacturing precision and structural integrity are maintained, but the adjustment process becomes cumbersome and time-consuming requiring specialized tools and expertise
Solution Approach 1:
The adjustment mechanism is segmented into modular components: a member with a shim portion for spacing adjustment, an engagement portion for attachment, and a groove feature for positioning. This segmentation allows independent adjustment of cam spacing without affecting other bow components, enabling quick modifications while maintaining structural integrity through the modular design.
Solution Approach 2:
The member acts as an intermediary component between the cam and the limb, providing a shim portion that can be inserted or removed to adjust cam spacing. This intermediary element mediates the adjustment process, allowing cam spacing to be modified without directly manipulating the cam or limb structures themselves, thereby simplifying the adjustment operation.
2Manufacturing precision
If cam spacing is adjusted to optimize shooting plane, then arrow tuning characteristics are improved, but the complexity of the adjustment process increases due to specialized tools and expertise required
Solution Approach 1:
The member is designed with self-aligning features including a groove that receives a corresponding feature on the axle, and an engagement portion that automatically positions itself on the limb. This self-service design eliminates the need for specialized alignment tools or expert knowledge, allowing users to achieve precise shooting plane alignment through simple insertion and removal of the member.
Solution Approach 2:
The adjustment mechanism works by changing the physical parameter of cam spacing through the addition or removal of the member with different shim portion thicknesses. This parameter change approach allows precise control of the shooting plane angle without complex adjustment procedures, as the spacing is directly determined by the member dimensions rather than requiring multi-step alignment processes.
3Adaptability or versatility
If cam spacing is modified for different shooting conditions, then adaptability of the bow is improved, but the time required for reconfiguration increases
Solution Approach 1:
The cam spacing is made dynamic and adjustable rather than fixed, allowing the bow to be quickly reconfigured for different shooting conditions. The member can be easily inserted or removed from the axle, enabling rapid adaptation of cam spacing to match varying shooting requirements such as different target distances or environmental conditions, thereby improving both adaptability and reconfiguration speed.
Data Source
AI summary
A member for an archery bow having an axle, a limb, and a cam. The member contacts the axle to retain the cam at a location relative to the axle and the limb. In some examples, the member can have a shim portion positioning the cam a distance from the limb or from a first end of the axle. In some examples, the member can define a first surface facing the limb and a second surface facing the limb. In some examples, the member can have an engagement portion coupling the member to at least one of the first end of the axle or the limb. In some examples, the member can include a nesting feature receivable within a groove of the cam.