Lamp Base Preventing Rotation via Integrated Insulator
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Solution Overview
Problem
Existing LED lamp designs face inefficiencies in assembly due to pinching or screw-connection methods between housing and enclosure, which can limit assembly efficiency and require time-consuming separate steps.
Innovation Solution
A base for LED lamps featuring a tubular enclosure with an insulator that prevents rotation, allowing for a snap-lock or welded attachment of the housing, enabling efficient assembly by transferring rotation to the insulator and preventing axial displacement, thus allowing easy insertion into sockets like Edison screw fittings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pinching or screw-connection methods are used to attach housing to enclosure, then connection strength is improved, but assembly efficiency deteriorates due to time-consuming separate steps
Solution Approach 1:
The insulator is integrated directly onto the enclosure in a single piece construction, merging two previously separate components (insulator and enclosure) into one unified structure. This eliminates the need for separate attachment steps and improves assembly efficiency while maintaining connection strength through the integrated design.
2Manufacturing precision
If separate assembly steps are used for attaching housing to enclosure, then manufacturing precision is improved, but loss of time increases due to multiple operations
Solution Approach 1:
The insulator is pre-integrated onto the enclosure during the enclosure manufacturing process, rather than being attached separately during final assembly. This preliminary action ensures precise positioning and attachment while eliminating the time required for separate assembly operations.
3Ease of operation
If insulator is not rotationally constrained to enclosure, then ease of assembly is improved, but reliability deteriorates due to potential rotation during operation
Solution Approach 1:
The insulator and enclosure are designed with asymmetric rotational constraints through integrated features such as offset positioning or non-circular cross-sections that prevent rotation while maintaining ease of assembly. The asymmetric design ensures that the insulator cannot rotate relative to the enclosure, providing rotational stability without complicating the assembly process.
Data Source
AI summary
According to an aspect there is provided a base for an electric lamp. The base includes a tubular enclosure extending along an axial direction between a first and a second end portion of the enclosure, an insulator attached to the first end portion of the enclosure. The insulator has an inner portion facing towards an inner space of the enclosure, an outer portion facing away from said inner space and at least one channel for receiving a contact pin, the channel extending from the outer portion, through the insulator and leading into said inner space. The base also includes a housing for accommodating electrical circuitry for operating the electric lamp. The housing is attached to the inner portion of the insulator such that a rotation of the housing relative to the insulator about the axial direction is prevented, and a rotation of the housing relative to the enclosure is prevented.