Three-dimensional wave generating device and multifunctional motion bed having the same
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional wave generating devices face issues with the separation of driven pulleys and eccentric shafts, leading to operational instability and noise, which affects the effectiveness of the three-dimensional wave experience in multifunctional motion beds.
Innovation Solution
A multifunctional motion bed design that incorporates a safety mechanism using safety rings and locking grooves to prevent rotational loosening and separation of driven pulleys from rotating shafts, combined with a triangular arrangement of pulleys and a power transmission belt system to stabilize the eccentric shaft, ensuring stable operation and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a driven pulley is coupled to a rotating shaft portion using a force-fitting method with a bearing, then the structure is simple and ease of manufacture is improved, but the coupling force cannot be maintained constantly and the driven pulley separates from the rotating shaft portion after long-term use
Solution Approach 1:
The coupling structure is divided into multiple functional segments: the force-fitted bearing portion for initial mounting, the protruding shaft portion for alignment, and the safety member with locking wings for long-term retention. This segmentation allows each component to perform its specific function optimally while working together to prevent separation.
Solution Approach 2:
The safety member is pre-installed on the rotating shaft portion before the driven pulley is mounted. The locking wings are positioned in advance to engage with the driven pulley, creating a preliminary protective structure that prevents separation before it can occur during operation.
2Ease of manufacture
If an eccentric shaft is fixed to a driven pulley using a fastening bolt, then the assembly is simple and ease of manufacture is improved, but the coupling becomes unstable after long-term use and violent movement occurs
Solution Approach 1:
The coupling structure transitions from a static bolt-only connection to a dynamic multi-stage coupling system. The force-fitted bearing provides initial positioning, the protruding shaft ensures alignment, and the safety member with locking wings provides continuous retention, allowing the assembly to adapt to operational stresses while maintaining stability.
Solution Approach 2:
The safety member acts as a preventive measure installed beforehand to cushion against the harmful effect of separation. The locking wings are positioned to engage with the driven pulley before operation begins, preventing violent movement and instability during long-term use.
3Device complexity
If the driven pulley and eccentric shaft are coupled using only a bolt, then the device complexity is reduced, but noise occurs due to separation and unstable coupling
Solution Approach 1:
Multiple coupling mechanisms are merged into a single integrated safety member structure. The force-fitted bearing, protruding shaft, and locking wings are combined in one component that performs multiple functions simultaneously, preventing separation and eliminating noise without requiring separate complex assembly systems.
4Reliability
If a safety member with locking wings is added to prevent separation, then operational stability is improved, but the device complexity increases
Solution Approach 1:
The safety member is designed as a universal component that performs multiple functions: it provides force-fitting through the bearing, ensures alignment via the protruding shaft, and prevents separation through the locking wings. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while significantly improving operational stability.
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 enhances operational stability and noise reduction, allowing users to experience three-dimensional waves more effectively and consistently in the bed, improving the overall functionality and usability of the motion bed.
Implementation Method 1
a third driven pulley rotatably coupled to the third rotating shaft portion, which protrudes from a center of the fixed frame, through a bearing
Implementation Method 2
a power transmission belt connecting the drive pulley to each of the first to third driven pulleys
Implementation Method 3
a vibration plate in close contact with a bottom surface of the auxiliary mat while being coupled to the fixing portion and configured to generate a three-dimensional wave through vibration of an upward-downward movement according to an eccentric rotation of the eccentric shaft
Data Source
AI summary
Provided is a three-dimensional wave generating device and a multifunctional motion bed having the same. A safety device prevents a driven pulley and/or a driven pulley to which an eccentric shaft is coupled from being separated from a coupling shaft. Therefore, operation stability is secured while noise caused by separation or unstable coupling of the driven pulley and/or eccentric shaft in a three-dimensional wave generating device is prevented from occurring, and when a functional motion bed to which the three-dimensional wave generating device is applied is provided, the user can feel a three-dimensional wave more effectively in bed.