Pivot Transmission Device for Heat Dissipation
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Solution Overview
Problem
Existing pivot transmission devices for electronic apparatuses complicate heat dissipation by obstructing heat dissipation holes when the display screen is opened, and their complex structures increase assembly difficulties and costs, making them unsuitable for compact and thin designs.
Innovation Solution
A compact pivot transmission device with a pivot, base frame, actuator, and transmission arm, where the actuator's axial displacement relative to the pivot moves the base frame away from the machine body module, preventing heat dissipation obstruction and allowing the display module to ascend/descend, thus improving heat dissipation and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pivotal axle is used to connect display screen and machine body module, then the structure is simple, but the display screen blocks the heat dissipation hole when opened
Solution Approach 1:
The patent introduces a dual-shaft structure where one shaft is vertical and the other is horizontal, creating a two-dimensional pivot mechanism. This dimensional change allows the display screen to rotate while maintaining spatial separation from the heat dissipation hole, resolving the blocking issue without significantly increasing structural complexity
Solution Approach 2:
The patent introduces a transmission arm as an intermediary component between the actuator and the base frame. This transmission arm converts the rotational motion of the actuator into linear motion that moves the base frame away from the heat dissipation hole, allowing the display screen to open while preventing heat dissipation obstruction
2Object-affected harmful factors
If a dual-shaft structure is used to avoid heat dissipation obstruction, then heat dissipation is improved, but the components become more complicated and assembly becomes more difficult
Solution Approach 1:
The patent merges the actuator and transmission mechanisms into a integrated assembly where the actuator directly connects to the transmission arm, which in turn connects to the base frame. This merging reduces the number of separate components and simplifies assembly while maintaining the heat dissipation benefit
Solution Approach 2:
The transmission arm serves multiple functions: it acts as a lever to amplify the actuator's motion, serves as a structural support for the base frame, and provides the mechanical linkage needed to move the display screen. This multi-functionality reduces the need for additional specialized components
3Object-affected harmful factors
If a dual-shaft structure is used to prevent heat dissipation blocking, then heat dissipation effect is improved, but the device occupies larger space
Solution Approach 1:
The dual-shaft configuration utilizes vertical and horizontal dimensions efficiently, allowing the display screen to rotate in a compact footprint. The vertical shaft provides the primary rotation axis while the horizontal shaft enables the base frame to move away from the heat dissipation hole, achieving heat dissipation improvement without significantly increasing the device's overall volume
Data Source
AI summary
A pivot transmission device is compact and can be assembled easily and conveniently, and includes a pivot, a base frame having a guide hole, an actuator disposed on the pivot and movable in response to turning of the base frame, and a transmission arm connected with the actuator and the base frame. When the actuator is turned and displaced, the transmission arm drives the guide hole of the base frame to move relative to the pivot for the base frame to depart from (or approach) the actuator, conforming to the operation mode of an electronic apparatus and lowering the obstruction of heat dissipation for the electronic apparatus.