Patent CN116357926B
Updated November 3, 2026Tool-Free Rotary Clamping Device for Garden Lamp Installation
Traditional garden lamp installation often requires aligning hidden holes and using screwdrivers in awkward positions, making maintenance difficult and slow. This tool-free mounting device solves this by using a rotary clamping mechanism. The lamp body drops onto a base equipped with triangular clamping angle blocks and sloped guide plates. When rotated, internal limit blocks slide into grooves, automatically locking the position. A single external hand screw tightens the assembly against the clamp, allowing quick removal and replacement without tools or precise alignment.
- China invention patent - active
- No filings outside China
- Outdoor lighting fixtures
- Rotary clamping, self-positioning, tool-free maintenance

Splat! What let you down?
🔄
Rotary Clamping
The lamp locks into place simply by rotating it onto the base, no hole alignment needed.
🛠️
Tool-Free Design
Installation and removal require no screwdrivers or wrenches; only one hand screw is used.
📐
Self-Positioning
Triangular angle blocks and guide plates ensure the lamp fits correctly in any orientation.
🔒
Secure Locking
A friction rotary drum and threaded hand screw press the lamp firmly against the clamp.
Bring this product to market
- ✓ Patent vetted China-only family and legal status checked
- 2 Product brief · now How it works, uses and options written up
- 3 Prototype First samples for buyers to review
- 4 Pilot run Small first batch for launch customers
- 5 Volume production Repeat orders at scale
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The problem
Installing garden lamps typically involves aligning mounting holes on the fixture with studs or screws on the ground or pole. This process can be cumbersome, especially if the lamp is heavy or mounted at height. If the holes do not line up perfectly, installers must use tools to adjust the position repeatedly. Furthermore, removing the lamp for bulb replacement or cleaning usually requires unscrewing multiple fasteners, which can be time-consuming and may damage the finish if tools slip. There is a need for a mounting system that simplifies this interaction, reducing the reliance on precision alignment and external tools.
The solution
The device introduces a rotary clamping mechanism at the bottom of the lamp outer body. Instead of fixed holes, the system uses a base fitted with multiple top clamping angle blocks. These blocks have triangular tops and grooves at their bottoms. Corresponding guide plates with sloped tops are positioned alongside these blocks.
Inside the lamp body, limit clamping blocks are fixed to the inner wall. When the lamp is placed over the base and rotated, these internal blocks slide along the sloped guide plates. They drop into the grooves of the angle blocks, creating a mechanical lock. To secure this position, a hand screw located on the exterior threads into a threaded hole aligned with the top of the angle block. Turning the hand screw presses the assembly together, fixing the lamp in place without the need for additional tools.

Who it is for
- Landscape lighting manufacturers seeking to differentiate their products with easier installation features.
- Municipal maintenance crews who need to service street-side garden lights quickly without carrying full toolkits.
- Residential homeowners looking for DIY-friendly outdoor lighting that doesn’t require professional installation skills.
- Retailers of premium garden fixtures where ease of maintenance is a key selling point for high-end consumers.
How it works
The main parts
| No. | Part | What it does |
|---|---|---|
| 1 | Lamp Outer Body | Houses the bulb and glass cover; contains internal locking components. |
| 51 | Base | Fixed mounting point; supports the clamping blocks. |
| 52 | Top Clamping Angle Blocks | Triangular blocks with grooves that receive the limit blocks. |
| 53 | Guide Plates | Sloped plates that direct the limit blocks into the grooves during rotation. |
| 54 | Limit Clamping Blocks | Internal tabs attached to the lamp body that engage with the angle blocks. |
| 55 | Threaded Hole | Located inside the lamp body; receives the hand screw. |
| 56 | Hand Screw | External knob that tightens the assembly against the angle blocks. |
| 59 | Friction Rotary Drum | Ensures smooth rotation and final tightening pressure. |
Installation Steps
- Position the Lamp: Place the lamp outer body over the base. The internal limit clamping blocks rest above the guide plates.
- Rotate to Lock: Turn the lamp body clockwise or counter-clockwise. The sloped guide plates push the limit clamping blocks down into the grooves of the top clamping angle blocks.
- Align Thread: Continue rotating until the threaded hole inside the lamp aligns with the top of an angle block.
- Tighten Hand Screw: Turn the external hand screw. It threads into the hole and presses against the angle block, securing the lamp tightly to the base.

Applications
Residential Patio Lighting
Homeowners can replace bulbs or clean fixtures by simply twisting off the lamp head, avoiding the hassle of finding a screwdriver for small, recessed screws.
Public Park Maintenance
Groundskeepers servicing large areas benefit from rapid changeovers. The self-positioning feature means they don’t need to fiddle with alignment while standing on ladders or uneven terrain.
Commercial Outdoor Signage
Storefronts using decorative pillar lights can swap out damaged units quickly during business hours, minimizing downtime and maintaining aesthetic appeal.
Temporary Event Lighting
For festivals or markets, organizers can install and remove temporary garden-style lights rapidly between events, saving labor costs associated with traditional bolted fixtures.
Where it is less suitable
- High-Wind Coastal Areas: While the clamp is secure, extremely high wind loads might require additional bolting mechanisms beyond the single hand screw described.
- Heavy Industrial Fixtures: The mechanism is designed for standard garden lamp weights; very heavy metal structures may stress the plastic or thin metal components.
- Vandal-Prone Zones: The external hand screw is accessible, so in areas prone to theft or tampering, a more concealed locking method might be preferred.
Frequently asked questions
How does the tool-free installation work?
You place the lamp over the base and rotate it slightly. Internal blocks slide down ramps into grooves, locking the position automatically. Then, you turn a single external hand screw to tighten the connection. No alignment of holes is required.
Is the lamp secure against wind?
The rotary clamp creates a positive mechanical lock, and the hand screw adds compression. However, the patent does not specify wind-load ratings. For high-wind areas, additional anchoring or heavier materials may be recommended based on engineering tests.
Can I add a lock for public areas?
Yes. The design allows for customization of the hand screw. You can specify a security screw head (requiring a special tool) instead of a standard finger-turn knob to prevent unauthorized removal.
Does it handle different bulb types?
The mounting mechanism is independent of the bulb socket. As long as the bulb fits inside the lamp body, the external mounting remains the same. The “collecting and protecting mechanism” mentioned in the claims helps organize internal components.
What materials are used?
The patent does not restrict materials. Typical implementations would use aluminum or durable plastics for the base and clamp blocks, and stainless steel or brass for the hand screw threads to resist corrosion.
Is it waterproof?
The patent focuses on the mechanical mounting. Water resistance depends on the seal between the lamp body and the base. Adding O-rings or gaskets during the design phase is necessary to achieve IP65 or higher ratings for outdoor use.
Can this design be made and sold in the US?
The patent is active in China but has no US counterpart. Therefore, this specific patent does not block sales in the US. However, you must check for other US patents covering similar twist-lock or rotary mounting systems before launching.
Are you affiliated with the patent owner?
No. IP2M is an independent design and manufacturing service working from the public patent document.
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Helpful details to include:
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- Lamp dimensions and weight class
- Target IP rating (e.g., IP65, IP66)
- Security features (standard hand screw vs. security screw)
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This page is based on the public patent document CN116357926B, assigned to Jiangsu Yaships Lighting Group Co ltd. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.