Visual Presenter Pivot Column With Free-Stop Counterweight Base
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Solution Overview
Problem
Conventional small visual presenters require users to hold the base with one hand and move the support column with the other, making it inconvenient to move the imaging camera-mounted support column with one hand.
Innovation Solution
A visual presenter design featuring a pivot shaft unit with a wave washer and return spring that counteracts the pivotal movement of the support column, allowing it to be stopped at any forward inclination and easily returned to a standing position, along with a counterweight in the base to prevent the rear from rising during operation, enabling one-hand operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support column is moved with one hand without holding the base, then the ease of operation is improved, but the base moves together with the support column causing inconvenience
Solution Approach 1:
A counterweight is disposed in the base to prevent the base from being moved during pivoting operation of the support column. The counterweight compensates for the unbalanced force generated when the support column is inclined forward, anchoring the base in place and enabling one-handed operation without unintended base movement.
2Ease of operation
If a wave washer and return spring are added to provide braking and biasing forces, then the support column can be stopped at any inclination and easily returned, but the device complexity increases
Solution Approach 1:
The pivot shaft unit incorporates a wave washer that automatically applies braking force and a return spring that automatically applies biasing force to return the support column to the standing position. These components enable the system to self-regulate the support column's movement and positioning without requiring additional control mechanisms or user intervention.
Solution Approach 2:
The wave washer and return spring modify the mechanical parameters of the pivot shaft unit by introducing controllable braking force and biasing force. These force parameters enable precise control of the support column's inclination angle and facilitate easy return to the standing position, enhancing operational control.
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
Enables one-hand operation of the support column by providing a free stop mechanism and assisting the return to a standing position, preventing the rear of the visual presenter from rising without user intervention.
Implementation Method 1
a wave washer inserted through the pivot shaft to be tightened against the shaft support bracket by a nut in threading engagement with the pivot shaft, whereby a braking force is applied to the pivot shaft
Implementation Method 2
a return spring attached to pivot shaft so as to apply a biasing force to the pivot shaft, the biasing force having a direction in which the support column is returned from the forwardly-inclined position to the standing position
Implementation Method 3
the base includes a counterweight disposed in the base so that the base is prevented from being moved during an operation of pivoting the support column
Data Source
AI summary
A visual presenter includes a base having a pivot shaft unit including a shaft support bracket, a support column mounted on the pivot shaft unit so as to be pivotable between a standing position and a forwardly-inclined position, a pivot shaft supported on the bracket, a wave washer inserted through the shaft to be tightened against the bracket by a nut in threading engagement with the shaft, and a return spring attached to the shaft so as to apply a biasing force to the shaft. The braking force and the biasing force counteract a pivotal movement of the support column, and the base includes a counterweight disposed in the base so that the base is prevented from being moved during an operation of pivoting the support column.