Seat-type rocking device
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Solution Overview
Problem
Conventional seat-type rocking devices face challenges in size adaptability for home use, stability, and control of rocking motion, particularly due to motor placement and link mechanism alignment, which affects the stability and adjustability of the rocking motion.
Innovation Solution
A seat-type rocking device with a strut member connected to a top plate and base, featuring obliquely positioned motors and link mechanisms that allow vertical displacement, enabling stable support and adjustable rocking motion, and incorporating elastic members and displacement sensors for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If motors are arranged horizontally around the strut member center, then the device size can be reduced, but the support stability of the top plate portion deteriorates
Solution Approach 1:
The patent applies asymmetry by positioning the two motors at different radial distances from the strut member center. Specifically, one motor is positioned at a first radial distance while the other motor is positioned at a second radial distance that is greater than the first radial distance. This asymmetric arrangement allows the link mechanisms to be distributed more effectively, improving support stability while maintaining a compact device footprint.
2Volume of moving object
If the interval between link mechanisms is small, then the device size is reduced, but the rocking width control capability deteriorates
Solution Approach 1:
The patent implements dynamics by making the link mechanisms adjustable in length. Each link mechanism includes a link rod whose length can be modified, allowing the interval between link mechanisms to be dynamically adjusted. This enables the system to maintain compact dimensions when needed while providing sufficient control capability for rocking width adjustment when required for different game experiences.
3Device complexity
If motors are positioned to support the top plate at center positions, then the structure is simplified, but the rocking motion stability deteriorates
Solution Approach 1:
The patent applies local quality by positioning the link mechanisms to connect with the top plate portion at different locations rather than all at the center. The link mechanisms are arranged to extend in different directions from the strut member, with each link mechanism connecting to a specific location on the top plate. This distributed connection approach improves rocking motion stability while keeping the overall structure relatively simple.
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 provides a compact, stable, and adjustable rocking motion suitable for home use, ensuring user safety and comfort by distributing the load and enhancing the control of the rocking width and depth.
Implementation Method 1
a motor which is rotatable in both forward and reverse directions; and a link mechanism which is arranged between an output shaft of the motor and the top plate portion
Implementation Method 2
a plurality of elastic members is inserted between the movable base and the installation base for reducing the load on the actuator against the moment increased in accordance with the rocking motion of the movable base
Data Source
AI summary
A strut member is connected to the center of a top plate portion which supports a seat portion and the center of a base portion so that the strut member rockably supports the top plate portion. A pair of rocking mechanisms formed by motors and link mechanisms connected to the output shafts of the motors and the top plate portion, and configured to be vertically displaced in accordance with a rotation of the motors is arranged in a front area or a rear area compared to the strut member in the base portion. The axial direction of the motor of one of the rocking mechanisms is aligned with a left oblique direction from the center of the supporting surface, and the axial direction of the motor of the other of the rocking mechanisms is aligned with a right oblique direction from the center of the supporting surface.