Toy Projectile Launcher with Backspin Lever Mechanism
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Solution Overview
Problem
Existing toy projectile launchers are often difficult to use, dangerous, expensive, or insufficiently robust, and do not provide a simple, fun, and safe experience for children.
Innovation Solution
A toy projectile launcher apparatus that discharges spherical-shaped projectiles using a handle to extend a constant force launch spring, a lever to impart discharge energy, and a ram to impact the lever, resulting in the ejection of the projectile with backspin, featuring a simple, safe, and robust design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If complex spring mechanisms and multiple chambers are used to propel projectiles, then the launching power is improved, but the device complexity increases and ease of operation deteriorates
Solution Approach 1:
The launcher is divided into distinct functional segments: a handle for cocking, a trigger mechanism for firing, a barrel for projectile containment, and internal components (spring, plunger, pawls). This segmentation allows each part to perform its specific function independently, simplifying the overall operation while maintaining launching power.
Solution Approach 2:
The spring is pre-compressed during the cocking phase by pulling the handle rearward, storing energy before firing. The trigger mechanism is pre-positioned to release the spring at the appropriate moment. This preliminary action separates the energy storage from the firing action, making operation simpler and more reliable.
2Reliability
If robust housing and multiple internal elements are used to ensure durability, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The housing is segmented into functional zones (handle housing, barrel, trigger guard, internal chambers) that can be manufactured separately and assembled. This modular approach maintains structural robustness while simplifying manufacturing and reducing overall complexity.
Solution Approach 2:
Instead of creating a single complex robust structure, the design uses multiple simpler interconnected components (housing segments, internal elements, mounting features) that collectively provide the required robustness. Each component can be optimized independently for its specific function.
3Speed
If multiple components and mechanisms are integrated to achieve projectile discharge with spin, then the flight characteristics are improved, but the manufacturing cost increases
Solution Approach 1:
The spring mechanism serves multiple functions: it provides the launching force and simultaneously imparts spin to the projectile through its interaction with the plunger and barrel. The trigger mechanism both releases the spring and controls the timing of discharge. This multi-functionality reduces the number of separate components needed, lowering manufacturing cost while maintaining flight performance.
Solution Approach 2:
The launching mechanism and spin-inducing mechanism are merged into a single integrated spring-plunger-barrel system. The off-center attachment of the spring to the plunger combines linear propulsion with rotational motion in one mechanism, eliminating the need for separate spin-inducing components and reducing manufacturing complexity.
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 apparatus is easy to operate, safe for children, and provides a fun and efficient way to launch projectiles with improved distance, while being compact and cost-effective.
Implementation Method 1
a launch spring mounted to the housing... a ram engagable by the handle, abutting the carriage when moving rearward... for impacting the lever and causing the lever to pivot and hit the projectile
Implementation Method 2
a lever pivotally connected to the housing for imparting discharge energy to the projectile... for impacting the lever and causing the lever to pivot and hit the projectile
Data Source
AI summary
Several variations of a toy projectile launcher apparatus for discharging EVA balls. The apparatus includes a housing, a ram movable in the housing, a carriage also movable in the housing, a negator spring, a handle for cocking the apparatus, and a lever pivotally mounted in the housing just behind a ball to be discharged. In operation, a user pulls the handle rearward and a connector engages the ram to pull the ram rearward. The ram abuts the carriage and when the ram moves rearward the carriage also moves rearward. The carriage is attached to the spring and extends the spring when the carriage moves rearward. At a predetermined location the connector disengages the ram.