Desk frame elevation structure

Solution Overview

Problem

Conventional desk frames with adjustable height generate excessive noise and instability during vertical movement due to friction between telescopic tubes and improper operation, leading to wear and unsmooth movement.

Innovation Solution

A desk frame elevation structure incorporating a shock absorbing unit with rollers and buffer pads, along with a movement control unit that allows controlled telescopic rod extension, reduces friction noise and enhances stability by using rollers to minimize contact between the inner and outer tubes and absorbing shocks with soft pads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the pneumatic rod is used to support and elevate the desk board, then the desk board can be adjusted to different heights, but excessive impact noise and shock occur during rapid elevation

Engineering Contradiction:

Improveheight adjustmentVSAvoidimpact noise

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a shock-absorbing structure consisting of a shock-absorbing spring and a shock-absorbing buffer at the bottom end of the inner tube. These components are pre-installed to cushion the impact before it reaches the outer tube, preventing the harmful noise and shock generated during rapid elevation of the desk board.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent uses a shock-absorbing spring and buffer as intermediary elements between the inner tube and the outer tube. These intermediaries absorb and dissipate the impact energy, mediating the interaction between the moving inner tube and the stationary outer tube, thereby reducing impact noise and shock.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the inner tube moves vertically within the outer tube, then height adjustment is enabled, but friction and wear occur between the tubes

Engineering Contradiction:

Improvevertical movementVSAvoidwear resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a shock-absorbing spring and buffer as intermediary elements between the inner tube and the outer tube. These intermediaries absorb and dissipate the impact energy, mediating the interaction between the moving inner tube and the stationary outer tube, thereby reducing impact noise and shock.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent introduces a shock-absorbing structure consisting of a shock-absorbing spring and a shock-absorbing buffer at the bottom end of the inner tube. These components are pre-installed to cushion the impact before it reaches the outer tube, preventing the harmful noise and shock generated during rapid elevation of the desk board.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If the stop block abuts against the upper stop edge to limit height, then the desk board height is controlled, but loud impact noise is generated

Engineering Contradiction:

Improveheight limitingVSAvoidimpact noise

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a shock-absorbing structure consisting of a shock-absorbing spring and a shock-absorbing buffer at the bottom end of the inner tube. These components are pre-installed to cushion the impact before it reaches the outer tube, preventing the harmful noise and shock generated during rapid elevation of the desk board.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 effectively reduces impact noise and improves motion stability during vertical desk board movement by preventing friction noise and absorbing shocks, resulting in a smoother and quieter operation.

Implementation Method 1

The roller unit includes a plurality of roller seats and a plurality of rollers. The plurality of rollers is rotatably mounted on the plurality of roller seats and is capable of rolling on the inner periphery of the outer tube.

Methodology Applied

Scientific EffectRolling friction: Roller

Implementation Method 2

The upper buffer pad is made of soft material and is disposed below the first top plate of the outer tube... The lower buffer pad is made of soft material and is disposed above the bottom plate of the outer tube

Methodology Applied

Scientific EffectShock absorption: Damping

Data Source

PatentUS11647831B2Desk frame elevation structure

Publication Date: 2023.05.16 PAN DOUGLAS

AI summary

A desk frame elevation structure includes an inner tube telescopically received in an outer tube and a roller unit between the inner and outer tubes. The outer tube is fixed to a base and includes a bottom plate and a first top plate. A desk board unit is fixed to the inner tube. A telescopic rod is received in the inner tube and has top and bottom ends coupled to the outer and inner tubes, respectively. The inner tube extends through an upper buffer pad disposed below the first top plate. The upper buffer pad has an upper face abutting the first top plate and a lower face for abutting an abutting edge of the inner tube. A lower buffer pad is disposed above the bottom plate and includes a lower face abutting the bottom plate and an upper face for abutting a bottom end of the inner tube.