At a glance
| Patent number | CN116357926B (application CN202310379513) |
| Type | China invention patent - protects product structure and method |
| Original title | A tool-free installation and removal device for garden lamps (一种用于庭院灯具上的免工具安装拆卸装置) |
| Patent owner | Jiangsu Yaships Lighting Group Co ltd |
| Inventors | Li Xuekun, Chen Quan |
| Filing date | 2023-04-11 |
| Grant date | 2025-07-04 |
| Status (China) | Active - In force in China until at most 2043-04-11 (if annual fees are paid) |
| Patent family | Chinese filings only - no US, European, Japanese, PCT or other filings listed |
| Cited by | 0 later documents |
| Source | Google Patents (search for CN116357926B) |
What the claims cover, in plain language
Claim 1 defines a garden lamp with a lamp outer body, glass cover, metal sleeve, and bulb. The core innovation is a rotary clamping mechanism at the bottom. This mechanism includes a base with multiple top clamping angle blocks arranged equidistantly around the circumference. Each block has a triangular top and a groove at the bottom. Guide plates with sloped tops are fixed next to the angle blocks. Inside the lamp body, limit clamping blocks correspond to these angle blocks. When the lamp is rotated, the limit blocks slide down the guides into the grooves. A threaded hole in the lamp body aligns with the top of the angle block, allowing an external hand screw to tighten and secure the assembly. A friction rotary drum aids in the rotation and locking action.
Claim 2 adds a squeezing plate and supporting spring within the groove of the angle block to provide elastic tension during the clamping process.
Claim 3 describes a collecting and protecting mechanism involving a gasket, supporting rod, and placing plate that holds the bulb, potentially offering shock absorption or organized wiring space.
This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.
What this means for US production
This patent was filed only in China and is currently active. Making or selling this specific configuration in China would require the owner’s permission. However, since there are no corresponding patents in the US or Europe, the technology itself is not restricted by this specific patent document in those regions.
Two points to settle early:
- Other patents may exist. Outdoor lighting mounting systems are a competitive field. Major manufacturers like Philips, GE, and various Chinese exporters hold numerous patents on twist-lock, bayonet, and magnetic mounting interfaces. A freedom-to-operate (FTO) review is essential to ensure your specific implementation of the “rotary clamp with hand screw” does not infringe on existing US utility patents in the F21V class.
- Material durability. The patent describes structural elements but does not specify materials for weather resistance. For US markets, UV-stabilized plastics or marine-grade aluminum are critical to prevent the “angle blocks” or “guide plates” from degrading outdoors.
Customization and manufacturing
What can be customized
| Area | Options |
|---|---|
| Clamp Geometry | Number of angle blocks (e.g., 3, 4, or 6) for different load distributions. |
| Screw Type | Standard hand screw vs. security screw (requires tool) for public spaces. |
| Materials | Aluminum die-cast for heat dissipation; ABS/PC blends for cost-effective residential models. |
| Sealing | IP65/IP66 ratings achieved by adding O-rings to the base interface (not explicitly detailed in Claim 1). |
| Finish | Powder coating colors to match landscape aesthetics. |
| Spring Tension | Adjusting the supporting spring (Claim 2) for tighter or looser fit tolerance. |
Things to plan for (US market)
- UL 1598 / UL 8750 - Standard safety requirements for luminaires. Electrical components must meet strict insulation and fire-resistance codes.
- IP Rating Testing - Outdoor fixtures sold in the US often require third-party testing for water ingress protection (IP65 minimum for rain exposure).
- RoHS Compliance - Restriction of Hazardous Substances applies to electronics and solder used in the bulb socket assembly.
- California Title 24 - Energy efficiency standards for outdoor lighting controls and luminaire efficacy.
How a project runs
- Inquiry - Define lamp size, weight class, and target retail price.
- Design Adaptation - Scale the rotary clamp dimensions to fit your specific lamp housing; integrate electrical safety clearances.
- Prototype - Create functional samples to test rotation smoothness, locking torque, and weather sealing.
- Certification Prep - Submit prototypes for UL/ETL pre-testing and IP rating verification.
- Production - Tooling for die-casting or injection molding; assembly of mechanical and electrical components.
Quantities & timeline
Manufacturing requires precision molds for the interlocking angle blocks and guide plates to ensure smooth rotation without binding. Injection molded plastic parts or die-cast aluminum bases need consistent tolerances. Certification cycles for outdoor electrical products typically take 8-12 weeks. Send us your lamp specifications, target quantity, material preferences, and required certifications and we will reply with options.
Patent drawings
Drawings reproduced from the public patent document for reference.
