Adjustable Lamp Lens Mechanism Without Accessory Rotation
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Solution Overview
Problem
Existing lamps with adjustable beam angles risk damage and falling of accessories due to synchronous rotation with the base, causing collisions with nearby objects.
Innovation Solution
A lamp design where the movable base with the lens moves linearly relative to the lamp body, preventing accessories from rotating during beam angle adjustments, using a sliding groove mechanism and a safety rope system to secure the light shield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens is mounted on a rotatable base to change beam angle, then the beam angle is adjustable, but the accessories mounted on the base rotate synchronously and may collide with nearby objects causing damage or falling
Solution Approach 1:
The patent divides the adjustment mechanism into two independent parts: the base that remains stationary and the adjustment ring that rotates independently. This segmentation allows the lens to change beam angle without causing the entire base and its mounted accessories to rotate, thus resolving the contradiction between beam angle adjustability and accessory stability.
Solution Approach 2:
The adjustment ring serves as an intermediary component between the user's rotation input and the lens positioning. When the adjustment ring rotates, it moves the lens along the optical axis to change beam angle, while the base with accessories remains stationary. This intermediary mechanism decouples the rotation action from the base, preventing accessory rotation and collision.
2Ease of operation
If the base rotates to adjust beam angle, then the lighting direction is adjustable, but the light shield or accessories may collide with nearby objects resulting in damage
Solution Approach 1:
Instead of rotating the base to adjust beam angle (conventional approach), the patent inverts the mechanism by keeping the base stationary and rotating the adjustment ring that moves the lens along the optical axis. This inversion eliminates the rotation of the base and its mounted accessories, thereby removing the collision risk with nearby objects while maintaining beam angle adjustability.
3Adaptability or versatility
If the lens distance from light source is changed by base rotation, then the beam angle varies, but the synchronous rotation of mounted components increases complexity and risk
Solution Approach 1:
The patent introduces a dynamic adjustment ring that can rotate independently of the base. This dynamic component allows the lens to be positioned at different distances from the light source by rotating the adjustment ring, which moves the lens along the optical axis. The base remains stationary with its accessories, simplifying the overall mechanism by eliminating the need for the entire base assembly to rotate, thus reducing device complexity while maintaining beam angle control versatility.
Data Source
AI summary
A lamp includes a lamp body, a light source, a lens, a movable base, and an adjustment ring. The light source is fixed in the lamp body. The movable base is movably connected to the lamp body and movable along an axial direction of the lens. The lamp body hinders a rotation of the movable base relative to the lamp body. The lens is fixed to the movable base. The adjustment ring is rotatable about the movable base and movable along the axial direction of the lens in synchronization with the movable base. At least one of the adjustment ring and the lamp body includes a sliding block, and the other includes a first sliding groove. When the adjustment ring is rotated relative to the movable base, the adjustment ring moves in synchronization with the movable base to change a distance between the lens and the light source.