Pushbutton Height Adjustment Mechanism for Dental Practitioner Stools
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Solution Overview
Problem
Dental practitioners face challenges with conventional seating that is not adjustable, mobile, or adaptable to different user sizes and preferences, requiring frequent adjustments and easy ingress/egress in confined spaces.
Innovation Solution
A height-adjustable mechanism for dental stools featuring a support member, movable height-adjusting assembly, and pushbutton actuator allows for quick height changes of the seat back and/or torso bar, with optional tilt and armrest adjustments for enhanced user comfort and accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional non-adjustable seating is used, then the device complexity is reduced, but the adaptability to different user sizes and preferences deteriorates
Solution Approach 1:
The patent implements a height-adjustable seat back mechanism that allows the seat back to be dynamically repositioned to different heights. The movable height-adjusting assembly can be selectively positioned at various heights along the support member, enabling adaptation to different practitioner sizes and preferences while maintaining a manageable device complexity through a straightforward mechanical adjustment system.
2Ease of operation
If frequent height adjustments are enabled, then the ease of operation is improved, but the reliability of the locked position deteriorates
Solution Approach 1:
The patent employs a spring-biased engagement member that automatically engages with recesses in the support member to lock the height-adjusting assembly at selected heights. The spring bias ensures positive engagement without requiring additional locking actions from the user, maintaining both ease of operation and reliability of the locked position through self-locking mechanism.
3Ease of manufacture
If a simple height adjustment mechanism is used, then the ease of manufacture is improved, but the adaptability to different practitioner preferences deteriorates
Solution Approach 1:
The patent divides the height adjustment mechanism into discrete segments: the support member with spaced recesses, the height-adjusting assembly with engagement member, and the spring biasing system. This segmented design allows for straightforward manufacturing of individual components while providing multiple discrete height positions that accommodate different practitioner preferences. The modular nature enables easy assembly and maintenance.
Data Source
AI summary
A height adjusting mechanism for a dentistry stool comprises a support member, a movable height adjusting assembly and a pushbutton actuator. The support member is coupleable to the stool adjacent a seat of the stool. The movable height adjusting assembly is selectively movable up and down relative to the support member. The pushbutton actuator is positionable on a side of the movable height adjusting assembly adjacent a seated user, and is manually actuatable by the seated user to release the movable height adjusting assembly from a locked position at a current height to allow the movable height adjusting assembly to be moved to a new height. The height adjusting mechanism can be implemented to provide a height-adjustable seat back and/or a height-adjustable torso bar.