Intelligent Security Dome Camera Housing: Waterproof Structure Prototypes Passed IP67 Testing, Crowdfunding Samples with Zero Defects

Customer Background

A smart home startup designed a security dome camera (PTZ camera) with facial recognition and automatic tracking functions. They needed to produce 30 sets of appearance and waterproof structure prototypes before the product crowdfunding campaign for product photography, media evaluation, and small-scale outdoor testing.

Challenges

Waterproof Requirement: The dome camera needed to achieve an IP67 protection rating (dust-tight, can be submerged in 1 meter of water for 30 minutes). The sealing surfaces, cable holes, and buttons of the housing all required waterproof structures.
Appearance Quality: The housing is white matte, requiring UV-resistant coating to prevent aging and yellowing during outdoor use. It also needs screen printing of brand logos and status indicator symbols.
Transparent Cover: The front part of the dome camera is a transparent PC protective cover, requiring minimal optical distortion, light transmission >90%, and sealing with the housing.
Assembly Consistency: 30 sets of products need to ensure consistent dimensions of each part, otherwise they cannot meet batch waterproof testing requirements.

Solutions

Process Selection: Vacuum casting was used, with the master model made by CNC-machined high-precision ABS. Three silicone molds were made simultaneously for casting, ensuring dimensional consistency of 30 housing units.
Materials: The housing uses PU resin simulating ABS with UV stabilizers; the transparent cover uses optical-grade PU transparent resin, which was then polished and coated with a UV-hardened layer, achieving a measured light transmission of 91%.
Waterproof Design Matching: O-ring installation space was reserved in the sealing grooves, with a 0.3mm compression. A PG7 waterproof connector was designed at the cable hole, installed by the customer. All assembly screws were equipped with silicone waterproof washers.
Post-processing and Assembly: The housing was sprayed with white UV-resistant matte paint, passing adhesion tests. Black logos and white indicator symbols were screen printed. Before assembly, all housings underwent air-tightness testing (50kPa pressure, holding for 30 seconds without leakage).

Results

Delivered 30 complete dome camera housings (including transparent covers and seals) on day 7, with customers assembling the electronic parts themselves.
Five randomly selected sets were sent to a third-party laboratory for IP67 testing: after submerging them in 1 meter of water for 30 minutes, the inside remained dry with no water penetration.
The customer used these prototypes for product photography, KOL evaluation, and 500 hours of outdoor exposure testing, with no obvious yellowing on the housing.
After the crowdfunding launch, it received over $1 million in orders. The customer stated that these prototypes supported the entire launch process with "zero defects".

"Yiruida not only made the housing but also actively optimized our waterproof structure, passing IP67 on the first attempt. The optical performance of the transparent cover completely exceeded our expectations."