Variable Sound Squeaker Helical Carriage Mechanism

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Solution Overview

Problem

Existing sound-producing devices for toys, such as those using reeds, primarily produce static sounds and lack the ability to change pitch dynamically, limiting their engagement and entertainment value.

Innovation Solution

A sound-producing device featuring a cylindrical carriage with a helical tracking thread within a housing, where air flow direction reverses the carriage's motion, altering the sound-producing chamber dimensions and frequency, enabling continuous pitch changes as the carriage translates and rotates along the helical thread.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional reed sound-producing device is used, then the structure is simple, but the sound pitch is static and cannot change dynamically

Engineering Contradiction:

Improvesound pitch variabilityVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the sound-producing chamber dimensions variable through the movable carriage. The carriage can translate along the helical thread to change the volume and shape of the sound-producing chamber, thereby dynamically altering the sound pitch. This transforms a static reed device into one with variable acoustic properties.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent introduces a spatial dimension to pitch control by using a helical thread mechanism. The carriage moves in three-dimensional space along the helical path, converting rotational motion into translational motion that adjusts the sound chamber dimensions. This adds a mechanical dimension to the acoustic parameter control.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Speed

If air flow is used to drive the carriage along the helical thread, then the carriage motion is smooth and continuous, but the motion speed is relatively fast

Engineering Contradiction:

Improvecarriage motion speedVSAvoidtime for complete sound cycle

Core Design Contradiction:

SpeedVSLoss of time

Solution Approach 1:

The patent uses a helical (curved) thread instead of a straight path. The curved geometry of the helical thread naturally slows down the carriage motion by increasing the path length and converting direct linear motion into a more gradual rotational-translational movement. This curvature allows for smoother, slower motion that extends the sound production cycle.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Adaptability or versatility

If the carriage translates only linearly, then the mechanism is simple, but the sound pitch cannot be continuously varied

Engineering Contradiction:

Improvecontinuous pitch variationVSAvoidcarriage motion mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges translation and rotation into a single unified motion mechanism. The helical thread converts rotational motion into translational motion, so that one degree of freedom (rotation) produces two effects simultaneously: the carriage rotates with the housing and translates along the axis. This combined motion enables continuous pitch variation without requiring separate mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

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 device achieves dynamic pitch changes in sound production, enhancing the interactive and engaging experience of toys by varying sound frequency based on the carriage's movement, providing a more immersive experience for children and animals.

Implementation Method 1

a squeaker secured within the carriage, so that when air flows in a first direction through the housing, the squeaker emits sound

Methodology Applied

Scientific EffectReed vibration: Vibration

Implementation Method 2

the squeaker carriage is also thereby driven to track along the helical thread, causing the carriage to rotate and to also translate in the first direction

Methodology Applied

Scientific EffectPressure-driven motion: Pressure Gradient

Data Source

PatentUS10755684B1Squeaker arrangement producing variable sounds

Publication Date: 2020.08.25 GRAMERCY PRODUCTIONS LLC

AI summary

A sound producing device includes: a housing and carriage. The housing has a cylindrical interior surface with a helical tracking thread protruding therefrom. The cylindrical carriage has an opening in its exterior surface defining a helical shaped recess that receives and tracks along the helical housing thread. A squeaker may be secured within the carriage, so when air flows in a first direction through the housing, it emits sound, and the squeaker carriage is driven to track along the helical thread, causing the carriage to rotate and also translate in the first direction, according to a pitch of the helical thread. A frequency of the sound produced by the squeaker changes according to the carriage's translational movement, as it changes the dimensions of the sound-producing chamber. When air subsequently flows through the housing in the opposite direction, the carriage's motion is reversed, correspondingly changing the frequency of sound produced.