Pendulum Suspension Sleeve for Low-Wear Oscillating Seating
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Solution Overview
Problem
Conventional seating furniture lacks mobility, leading to muscle tension and reduced well-being due to prolonged immobilization, and existing pendulum devices are complex to manufacture and prone to wear and restricted movement.
Innovation Solution
A pendulum device with a core supported by a transition piece for simplified assembly and free, amplitude-dependent damped oscillation, featuring a tubular sleeve and elastic elements for low-friction and adjustable damping, allowing for relaxed and beneficial vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a core is fastened in a clamping head to form an extension, then the pendulum can be suspended, but the assembly requires complicated manufacturing methods and the clamping head wears out quickly due to large loads
Solution Approach 1:
A transition piece is introduced as an intermediary component between the fastening device and the oscillating element. This transition piece absorbs the large loads and wear, protecting the clamping head while simplifying the overall assembly process. The transition piece serves as a sacrificial element that can be easily replaced rather than wearing out the精密 clamping head.
Solution Approach 2:
The pendulum suspension system is divided into separate functional components: a fastening device, a transition piece, and an oscillating element. This segmentation allows each component to be optimized for its specific function - the fastening device for secure attachment, the transition piece for load absorption, and the oscillating element for movement.
2Ease of operation
If the clamping head is positioned directly in the receiving device, then the pendulum can be mounted, but the clamping head is exposed to abrasion loads and the freedom of pendulum movements is restricted
Solution Approach 1:
The transition piece acts as a mediator between the clamping head and the receiving device, preventing direct contact and thus eliminating abrasion loads on the clamping head. This intermediary component allows the pendulum to move freely while protecting the fastening components from wear.
3Stability of the object's composition
If a rigid seat structure is used, then the seat provides stable support, but muscles remain consistently engaged leading to tension and reduced well-being
Solution Approach 1:
The seat incorporates a pendulum mechanism that transforms the static rigid structure into a dynamic system. The pendulum allows the seat to oscillate and move in response to user movement, providing proprioceptive stimulation that activates muscle groups alternately, preventing continuous tension while maintaining support stability.
Solution Approach 2:
The pendulum mechanism introduces controlled mechanical vibrations and oscillations to the seat structure. These vibrations stimulate the proprioceptive system, promoting coordinated interaction of muscle groups and preventing the harmful effects of prolonged immobilization while the seat maintains its load-bearing 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 pendulum device provides effective muscle stimulation through adjustable and low-wear oscillations, enhancing user comfort and reducing muscle tension by aligning with the proprioceptive system's stimulation needs.
Implementation Method 1
an elastic element (16) arranged in the longitudinal direction L between the first holding element (17) and the covering (9)
Implementation Method 2
The damping characteristic is limited in such a way that a natural frequency fE of the pendulum device (1) in the range from 0.1 Hertz to 10 Hertz, in particular in the range from 0.5 Hertz to 5 Hertz, is achieved
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The device (1) has two fastening mechanisms (4, 7) for attachment of the device to respective retaining elements (17, 25), and a traction-loadable connection element (8) with a longitudinal direction (L), where the connection element connects the fastening mechanisms. The connection element is supported by an adapter against one of the two fastening mechanisms, where the connection element has a steel core. The adapter is designed as an end sleeve (12) or as a tube jointing sleeve (14).