Table Height Adjustment System with Automated Preset Positioning

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing table arrangements lack efficient mechanisms for quick and safe adjustment of tabletop heights, which can lead to user discomfort and potential damage to objects or structures due to lack of precise height control.

Innovation Solution

A table arrangement with an actuator and controller system that allows for automatic height adjustment between pre-set positions, using a manipulatable actuator member to store and recall sitting and standing heights, and includes safety features to prevent movement beyond minimum and maximum positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If manual height adjustment mechanisms are used, then device complexity is reduced, but adjustment speed and precision deteriorate

Engineering Contradiction:
Improveadjustment speedVSAvoidmechanism complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical adjustment with an automated actuator system that includes a motor, controller, and feedback sensors. The controller receives input signals and automatically controls the actuator to adjust the tabletop height, eliminating the need for manual cranks or levers while achieving precise and rapid positioning.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates memory functionality that automatically stores and recalls preferred height positions. When a user selects a stored position, the actuator automatically moves the tabletop to that height without requiring manual intervention, making the system self-servicing for repetitive adjustment tasks.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If full range height adjustment is allowed, then adaptability is improved, but safety and damage prevention worsen

Engineering Contradiction:
Improveheight adjustment rangeVSAvoiddamage to objects
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements limit switches or sensors that detect when the tabletop reaches predetermined maximum and minimum height positions. When these limits are reached, the system automatically stops the actuator movement, preventing over-travel that could damage the adjustment mechanism or objects on/near the table. This feedback control allows full adaptability within safe boundaries.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If automatic height adjustment is implemented, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveheight adjustment easeVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The controller serves multiple functions: it receives adjustment commands, controls the actuator motor, stores preferred positions in memory, recalls stored positions, and monitors limit switches for safety. By consolidating these diverse functions into a single microcontroller unit, the system achieves high ease of operation without proportionally increasing overall complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11122888B2Table height adjustment system and method of using the same
Publication Date: 2021.09.21 KNOLL INC
  • US11122888B2 patent drawing
  • US11122888B2 patent drawing
  • US11122888B2 patent drawing

AI summary

A table arrangement includes a height adjustment mechanisms for movement of one or more height adjustable tabletops. When more than one tabletop is present, each of the tabletops can be independently moveable. Embodiments of the table arrangement can be configured so that a user can manipulate an actuation mechanism to have the tabletop automatically moved to a pre-selected position without the user having to manually control the actuation mechanism to cause the tabletop to move to that pre-selected position.