Lamp Head Pivot Brake for Stable Orientation Under Self-Weight
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Solution Overview
Problem
Conventional lighting apparatuses face difficulties in suppressing the inconveniences caused by the self-weight of the operation target, such as a lamp head, while allowing its orientation to be changed, due to obstructive pivoting mechanisms.
Innovation Solution
A driving apparatus with an arm supported by a mechanism and an electric driving source, enabling the lamp head to pivot about a rotational axis intersecting with the arm, and a brake unit that secures the target gear for immobility when power is stopped, reducing the impact of self-weight and enhancing orientation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation target is rotatably supported by the arm that holds the operation target from the sides, then the orientation of the operation target can be changed in horizontal and vertical directions, but the self-weight of the operation target obstructs appropriate pivoting
Solution Approach 1:
The patent introduces a brake unit that applies braking force to counteract the torque generated by the self-weight of the operation target. This allows the system to maintain position against gravity without requiring continuous power input, effectively compensating for the weight obstruction during pivoting operations
2Use of energy by moving object
If power supply to the driving source stops, then energy consumption is reduced, but the operation target cannot maintain its position due to self-weight
Solution Approach 1:
The brake unit is designed to be activated automatically when power supply stops, providing preliminary action to maintain position before gravity can cause unwanted movement. This ensures position stability during power interruptions without requiring continuous energy input
3Stability of the object's composition
If a brake unit is added to secure immobility of the target gear, then position stability is improved, but device complexity increases
Solution Approach 1:
The brake unit is integrated with the existing gear mechanism, combining the braking function with the transmission system. This merging approach adds position stability while minimizing the increase in device complexity by utilizing the existing structural framework
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
This configuration effectively suppresses the inconveniences caused by the self-weight of the lamp head, allowing precise orientation changes and maintaining stability, even when the system is subjected to vibrations, while minimizing noise and gear rattling.
Implementation Method 1
a brake unit that secures immobility of a target gear that is a gear disposed on the arm, and that is rotated as the operation target is pivoted, when power supply to the driving source stops
Data Source
AI summary
A driving apparatus according to an embodiment includes an arm, an operation target, and a brake unit. The arm has one end supported by a support mechanism, and includes an electric driving source. The operation target is attached to the other end of the arm, the other end being an end on the opposite side of the one end, and is enabled to be pivoted by the driving source about one rotational axis intersecting with a direction from the one end to the other end. The brake unit secures immobility of a target gear that is a gear disposed in the arm, and that is a gear being rotated as the operation target is pivoted, when the power supply to the driving source stops.