Lamp Cover Snap-Fit Assembly for Reliable Lighting Housing
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Solution Overview
Problem
The connection between the lamp cover and the lamp body in lighting devices often requires a cumbersome thread connection through an outer frame, which complicates the fixing process.
Innovation Solution
A lighting device with a lamp body and lamp cover that utilize a snap structure and an elastic snap sheet, allowing for a quick connection without the need for an outer frame or thread connection, using a snap structure with a snap slot, inverted buckle, and elastic piece to secure the lamp cover to the lamp body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thread connection between outer frame and lamp body is used to fix the lamp cover, then the connection is reliable, but the fixing method becomes cumbersome and complex
Solution Approach 1:
The connection structure is segmented into distinct functional components: the elastic snap sheet forms a separate fastening element that interfaces with the snap structure on the lamp body. This segmentation allows the complex thread connection to be replaced by simpler, modular components that achieve reliable fixation without requiring threaded assemblies or outer frames.
Solution Approach 2:
The mechanical thread connection system is replaced by an elastic snap mechanism. The elastic snap sheet utilizes elastic deformation and snap-fit engagement to achieve secure attachment, substituting the complex threaded fastening system with a simpler elastic-mechanical engagement that maintains reliability while reducing structural complexity.
2Reliability
If thread connection and outer frame are used to attach the lamp cover, then the connection is secure, but the assembly process becomes time-consuming
Solution Approach 1:
The elastic snap sheet is pre-formed with the elastic piece and hooking portion configured to engage with the snap structure. This preliminary preparation of the connection element allows for rapid assembly where the lamp cover can be quickly attached by simple engagement, eliminating the time-consuming process of threading and tightening that would otherwise be required to achieve secure attachment.
3Stability of the object's composition
If an outer frame with thread connection is used to fix the lamp cover, then the connection is stable, but the device structure becomes complex
Solution Approach 1:
The outer frame component is extracted and eliminated from the design. The elastic snap sheet and snap structure directly provide the necessary connection functionality without requiring an outer frame to house the thread connection. This extraction simplifies the overall device structure while maintaining connection stability through the elastic snap mechanism.
Solution Approach 2:
The functions of the outer frame and thread connection are merged into the integrated elastic snap sheet and snap structure. The elastic snap sheet combines the fastening, securing, and structural interface functions that were previously distributed across the outer frame and threaded components, resulting in a more compact and less complex device structure with equivalent or superior connection stability.
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 a stable and reliable connection between the lamp cover and lamp body, ensuring secure attachment and ease of assembly, while eliminating the need for complex thread connections.
Implementation Method 1
an elastic snap sheet comprising a bearing portion and a hooking portion that are connected, in which the bearing portion abuts against the outer surface, the hooking portion is inserted from the outer surface into a gap between the cover side wall and the groove wall and snaps with the snap structure
Data Source
Figure 1
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AI summary
The present application provides a lighting device, which includes a lamp body, a lamp cover and an elastic snap sheet, the lamp body includes a light source cavity, an annular bottom wall extending outward from a cavity opening of the light source cavity, and a groove wall on a periphery of the annular bottom wall, the annular bottom wall and the groove wall form a mounting groove, and a groove opening of the mounting groove forms a light outlet of the lamp body, and a connection region of the annular bottom wall and the groove wall is formed with a snap structure; the lamp cover received in the mounting groove and covering the light outlet includes an inner surface facing the mounting groove, an outer surface provided opposite to the inner surface, and a cover side wall connecting the outer surface and the inner surface; the elastic snap sheet includes a bearing portion and a hooking portion that are connected, the bearing portion abuts against the outer surface, the hooking portion is inserted from the outer surface into a gap between the cover side wall and the groove wall and snaps with the snap structure.