Rectangular Lamp Housing Hook Fastening
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Solution Overview
Problem
Existing lamp housings face challenges in achieving a reliable and easy connection between the cover and housing while ensuring a secure seal, often requiring visible fastening means that compromise the aesthetic appeal and assembly efficiency.
Innovation Solution
The use of hook-shaped interlocking holding elements between the cover and housing, arranged in recesses, allows for a secure and uniform fixation without additional visible fastening means, enabling easy assembly and a complete seal over the housing's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to fasten the cover to the housing, then a secure connection is achieved, but visible fastening means compromise the aesthetic appeal and additional screws increase assembly complexity
Solution Approach 1:
The fastening function is segmented into multiple hook-shaped retaining elements distributed along the long rectangular sides between corners, rather than using a few concentrated fasteners. This segmentation provides uniform fixation while keeping each individual element simple and hidden
Solution Approach 2:
The visible fastening elements (screws) are extracted from the design and replaced with hidden hook-shaped retaining elements integrated into the housing and cover structure. The fastening function remains while the aesthetic burden of visible fasteners is removed
Solution Approach 3:
The hook-shaped retaining elements merge the fastening function with the structural design of the housing and cover. The hooks are formed as integral parts of the molded structures, combining structural support and fastening in a single concealed element
2Reliability
If additional fasteners are provided to ensure secure connection, then connection reliability improves, but the number of parts and assembly time increase
Solution Approach 1:
The hook-shaped retaining elements are pre-formed as integral parts of the housing and cover during molding. This preliminary action eliminates the need for separate fastener installation steps, allowing the cover and housing to be directly connected by simply bringing the hooks into engagement
Solution Approach 2:
The hook-shaped retaining elements are designed to self-align and self-engage when the cover is placed on the housing. The complementary geometry of hooks and recesses guides the assembly process, allowing the connection to establish itself without external intervention or complex alignment procedures
3Object-affected harmful factors
If a seal is provided between cover and housing, then protection from moisture and contamination is achieved, but the seal may compromise the uniformity of connection and assembly ease
Solution Approach 1:
The hook-shaped retaining elements serve multiple functions simultaneously: they provide mechanical fastening, ensure uniform distribution of connection forces, and create compression channels that accommodate and compress the seal. This multi-functionality integrates sealing into the fastening mechanism rather than adding a separate sealing system
Solution Approach 2:
The connection structure has different local qualities: the hook-shaped elements provide rigid mechanical engagement, while the recesses between hooks provide flexible sealing zones. This local differentiation allows the same structure to handle both rigid fastening and flexible sealing requirements
Data Source
Figure 1~2
AI summary
The invention relates to a rectangular lamp housing (1) with two opposing short sides (3, 3') and two opposing long sides (4, 4'), comprising a housing (7) and a cover (2) covering the housing (7) with a light emission opening (5), wherein cooperating fastening means are provided in the corners of the housing (7) and the cover (2). Hook-shaped interlocking retaining elements (8) are provided on the long sides of both the cover (2) and the housing (7) between the corners.