Angle Adjustment Device Spring Counterweight Lighting

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Solution Overview

Problem

Conventional angle adjustment devices for lighting devices face difficulties in smoothly rotating the light source due to gravity torque issues, making it challenging to change the irradiation direction effectively.

Innovation Solution

An angle adjustment device incorporating a first rotational unit supported by a frame body, a spring member that urges the rotational unit in a specific direction, and a driving source to facilitate smooth rotational movement, along with a second rotational unit and driving units that allow for controlled rotation in both horizontal and vertical directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional angle adjustment device is used to change the irradiation direction of a light source, then the light source can be rotated to different directions, but the rotation becomes difficult and non-smooth when gravity torque reverses around the horizontal shaft

Engineering Contradiction:

Improvesmoothness of rotationVSAvoidgravity torque

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The spring member acts as a counterweight mechanism that generates an urging force in the rotational direction, counteracting the gravity torque that causes rotation difficulty. The spring member is configured to urge the first rotational unit in a single direction of rotational direction, providing continuous rotational assistance that compensates for gravity's opposing torque at different positions.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The invention changes the force parameter by introducing a spring member that provides variable urging force throughout the rotation range. The spring member's elastic force compensates for the changing gravity torque as the light source rotates, maintaining relatively constant total torque requirements and enabling smooth rotation throughout the entire angular range.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If the spring member urges the first rotational unit in a single rotational direction, then rotation smoothness is improved, but the device complexity increases due to additional components

Engineering Contradiction:

Improverotation smoothnessVSAvoidnumber of components

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The spring member serves multiple functions simultaneously: it provides the urging force for smooth rotation, acts as a torque compensating mechanism for gravity effects, and functions as part of the overall angle adjustment system. This multi-functionality reduces the need for separate mechanisms and minimizes overall device complexity while achieving rotation smoothness.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If the light source can be rotated smoothly in any direction, then the irradiation direction can be precisely controlled, but the motor load increases due to the need to overcome gravity torque variations

Engineering Contradiction:

Improveirradiation direction control precisionVSAvoidmotor load

Core Design Contradiction:

Measurement precisionVSPower

Solution Approach 1:

The spring member acts as a mechanical counterweight that pre-compensates for gravity torque, reducing the motor's burden. By providing continuous urging force in the rotational direction, the spring member eliminates the need for the motor to repeatedly overcome large gravity torque variations, thereby reducing peak motor load while maintaining precise directional control capability.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The invention changes the torque parameter distribution by introducing spring-based urging force that varies with rotational position. This creates a more uniform total torque requirement throughout the rotation range, allowing the motor to operate at lower, more consistent power levels rather than dealing with large torque fluctuations, thus reducing overall motor load while preserving precision control.

Inventive Principle:

Principle #35Parameter changes

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 smooth rotational movement of the light source, reducing the need for excessive motor load and allowing for precise control of the irradiation direction, thereby improving the operational efficiency of the lighting device.

Implementation Method 1

The spring member urges the first rotational unit in a single direction of a rotational direction

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

rotationally moves around a first rotating shaft passing through the frame body, by a driving force of a driving source

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS10830423B2Angle adjustment device and lighting device

Publication Date: 2020.11.10 MINEBEAMITSUMI INC

AI summary

An angle adjustment device of an embodiment includes a first rotational unit and a spring member. The first rotational unit is supported by a frame body, and rotationally moves around a first rotating shaft that passes through the frame body and that is disposed along an opening surface of the frame body, by a driving force of a driving source with an object to be operated. The spring member urges the first rotational unit in a single direction of a rotational direction.