Abdominal Support Swivel Chair for Free Movement and Stability
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Solution Overview
Problem
Existing chairs for dentists and similar professionals fail to provide adequate support for the abdomen, leading to musculoskeletal issues such as back, neck, and shoulder problems due to inadequate blood circulation and obstructed arm movements, resulting in reduced productivity and shorter work life cycles.
Innovation Solution
An abdominal support swivel chair with a displaceable support base, adjustable center post, and an abdominal support pad that can be positioned for comfort, allowing for free arm movement and preventing the chair from overturning, featuring a seat frame with a concave design to reduce pressure on the thighs and promote blood circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chair provides firm support for the abdomen and back, then musculoskeletal stress is reduced, but freedom of movement and rotational capability are restricted
Solution Approach 1:
The chair employs a swivel mechanism that allows the seat to rotate freely around a central vertical axis, enabling dynamic movement while maintaining abdominal support. The support structure remains stable during rotation, resolving the contradiction between firm support and freedom of movement.
Solution Approach 2:
The chair separates the support function (abdominal pad and seat frame) from the movement function (swivel base and rotational mechanism). This segmentation allows the support structure to remain stable while the base provides rotational freedom, addressing both requirements simultaneously.
2Ease of operation
If the chair allows free rotational movement, then ease of operation is improved, but stability and risk of overturning increase
Solution Approach 1:
The chair uses a wide, stable base with a low center of gravity to counterbalance the rotational movement. The base structure acts as a counterweight system that prevents overturning while allowing free rotation, resolving the contradiction between rotational freedom and stability.
3Ease of operation
If the seat is designed for forward inclination, then work comfort is improved, but blood circulation in the legs is hindered
Solution Approach 1:
The seat features a concave design with differentiated zones: the abdominal area provides forward inclination support for comfort, while the leg area maintains an open, non-compressive structure that allows blood circulation. This local quality differentiation resolves the contradiction between work comfort and circulation.
4Device complexity
If the abdominal support pad is fixed in position, then structural simplicity is maintained, but adaptability to different users and positions is reduced
Solution Approach 1:
The abdominal support pad is mounted on an adjustable arm mechanism that allows dynamic repositioning in vertical and horizontal directions. This dynamic adjustment capability enables the pad to adapt to different users and working positions while maintaining relatively simple overall structure through modular design.
Data Source
AI summary
An abdominal support swivel chair is comprised of a support base with a plurality of leg arms having casters and radiating about the base frame in a common horizontal plane. An adjustable center post assembly extends vertically from the center of the support base and along a central vertical axis. A seat is secured to a frame connected at a top end of the center post. The seat has a rear buttocks support section and a central narrow frontal projecting section merging therewith through opposed side thigh cavities. An abdominal support pad is secured to an adjustable support arm connected to the saddle frame. The support arm has an upper securing end section adapted for securement of the abdominal support pad and to position same inclined forwardly. The adjustable support arm extends forwardly of the frontal projecting section and aligned therewith and has an adjustable connecting mechanism to position the abdominal support pad for the comfort of a user person above the frontal projecting section.