Bow Pressure Button Rotating Element Wear
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Solution Overview
Problem
Existing bow pressure buttons with stiff springs suffer from surface wear, leading to shot errors and alignment issues, especially during high-frequency use, as the repeated stress causes groove formation on the movable element, impairing the corrective effect and making it difficult to maintain accuracy and reposition the button correctly.
Innovation Solution
A bow pressure button with a housing body featuring a cylindrical cavity, a cup-shaped base, and a tubular body that allows adjustable positioning and includes a sliding element with elastic loading and free rotation, distributing stress uniformly and preventing groove formation, thus maintaining effectiveness over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stiff spring is used in the pressure button, then the arrow can be effectively straightened and shot accuracy is improved, but surface wear occurs on the movable element tip leading to groove formation and reduced reliability
Solution Approach 1:
The patent changes the physical state of the contact surface by applying a hard coating (such as titanium nitride, titanium carbon nitride, or diamond-like carbon) to the movable element tip. This coating increases the hardness and wear resistance of the surface, allowing the stiff spring to maintain its straightening function while preventing groove formation from repeated arrow contact. The coating transforms the surface properties without changing the mechanical function of the spring.
2Reliability
If the pressure button is repeatedly stressed by arrows, then the corrective effect is maintained, but surface wear causes groove formation that impairs alignment and shooting accuracy
Solution Approach 1:
The patent applies a thin hard coating to the movable element tip that can be replaced or renewed. The coating acts as a sacrificial layer that protects the underlying metal from wear. When the coating wears down, it can be removed and a fresh coating applied, effectively renewing the pressure button without replacing the entire component. This maintains alignment precision over extended use.
3Ease of operation
If the pressure button is dismounted and re-fixed to maintain position, then alignment can be adjusted, but the groove on the movable element cannot be properly realigned with the arrow shaft
Solution Approach 1:
The hard coating on the movable element tip serves as a renewable surface that eliminates the need for realignment after dismounting. Since the coating prevents groove formation, the movable element maintains its original alignment characteristics even after multiple dismounts and remounts. The coating effectively makes the component indefinitely reusable without degradation of alignment precision.
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 solution effectively absorbs arrow bending, maintains accuracy during prolonged use, and allows easy repositioning and spring replacement, ensuring consistent performance without significant reductions in shooting accuracy.
Implementation Method 1
The pressure button comprises an element slidable within the cavity and having a first end and a second end. The first end extends outside the housing body so as to cooperate with the arrow. The element is elastically loaded by elastic means housed within the cavity of the housing body.
Implementation Method 2
The spring or other resilient means can be adjusted so as to enable the arrow to move by a predetermined amount to the riser at the instant when it is shot.
Data Source
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AI summary
The invention relates to a pressure button (1) releasably fixable to a bow (51) and adapted to cooperate with an arrow (53) before and during the step of releasing the arrow (53) from said bow (51), the pressure button (1) comprising: a housing body (2) defining a substantially cylindrical cavity (3) therein; a sliding element (8) sliding within said cavity (3) and having a first end (8A) and a second end (8B), the first end (8A) extending outside said housing body (2) so as to cooperate with said arrow (53) before and during the step of releasing of the same from said bow (51); said sliding element (8) being elastically loaded by elastic means (11) housed within said cavity (3) of the housing body (2); the sliding element (8) being free to rotate about a relative axis (A) within said cavity (3) of the housing body (2); the pressure button (1) further comprising support means (12) of said sliding element (8) housed within said cavity (3) of the housing body (2) to allow the free rotation of said sliding element (8) about said axis (A), said support means (12) comprising a bearing (12a).