Patent CN209862619U
Updated October 23, 2026Snap-Together Luggage Connector
Two suitcases, one traveler, two hands full. This design builds a stud-and-socket snap into the cases themselves: press one case against the other and the stud clicks into a U-shaped spring ring, holding the two together so you can pull both with one hand. To separate them, just lift one case up. Optional magnets help the parts find each other.
- China utility model - lapsed
- No filings outside China
- Luggage hardware
- Molded parts, no electronics
Splat! What let you down?
🧳
Two cases, one hand
Join two (or more) suitcases side by side and pull them together with one handle.
🔘
Press to lock
A grooved stud on one case snaps into a socket with a U-shaped spring ring on the other.
⬆️
Lift to release
Lift the case with the stud and the snap lets go - no straps, no buckles to thread.
🧲
Optional magnets
Magnets in both parts pull them into place and add holding force.
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
Buyer interest
– of 100 buyers needed to start prototyping
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The problem
Most trips need one suitcase - until they need two. Then the traveler has a suitcase in each hand, no hand free for a phone, passport, coffee or child, and two cases that drift apart on every turn. Loose straps and add-on clips exist, but they get lost and take time to fit.
The solution
The patent builds a press-stud connector into the luggage itself:
- The first case (1) has a stud assembly (2) fixed on its side.
- The second case (4) has a matching socket assembly (3).
- Press the cases together: the guide post of the stud enters the socket, and a U-shaped spring ring (32) inside the socket opens and snaps into a ring groove around the post.
- The two cases are now locked side by side and can be pulled with one hand.
- To separate them, lift the case with the stud upward and it releases.
The patent notes the same connector can be used between a suitcase and other bags, and that more than two cases can be joined.
Who it is for
- Luggage brands looking for a simple, visible “system” feature across a range of case sizes.
- Private-label and Amazon luggage sellers who want a two-piece set that connects.
- Bag and accessory brands - matching carry-ons, duffels or backpacks that attach to a suitcase.
How it works
The main parts
| No. | Part | What it does |
|---|---|---|
| 1 | First case | Carries the stud assembly. |
| 2 | Stud assembly | The male half of the snap. |
| 21 | Stud base | Fixed to the case. |
| 23 | Guide post | Post on the base, molded in one piece with it. |
| 22 | Ring groove | Groove around the guide post that the spring ring catches. |
| 4 | Second case | Carries the socket assembly. |
| 3 | Socket assembly | The female half of the snap. |
| 31 | Socket base | Fixed to the case. |
| 35 | Socket housing | Holds the ring; molded in one piece with the base. |
| 34 | Socket slot | Opening the guide post enters. |
| 32 | U-shaped spring ring | Its two ends cross the slot; it spreads open as the post enters and snaps into the groove. |
| 33 | Closed bottom face | Keeps the ring from falling out. |
| 5 | Magnet | Optional, in both halves; pulls them together. |
| 6 | Ring flange / groove | Used to sew or fix the part into the case panel. |
| 7 | Connecting rod | Inside the flange groove, for fixing to the case. |
Connecting two cases
- Stand the cases side by side, stud facing socket.
- Press them together. The guide post (23) pushes into the socket slot (34); the U-shaped ring (32) spreads open.
- Click - the ring springs back into the groove (22) on the post and holds it. Magnets (5), if fitted, add holding force.
- Pull both cases with the handle of either one.
Separating them
- Lift the case with the stud straight up.
- The post slides out of the slot, past the ring, and the cases are apart.
Applications
Family and long trips
Two checked cases - or a checked case and a carry-on - moved through the airport by one person.
Business travel
A carry-on and a garment or laptop case that travel as one unit.
Matching luggage sets
A two- or three-piece set sold as a “connecting” system - each case can still be used alone.
Suitcase plus bag
The patent mentions attaching other bags: a duffel, cooler bag or backpack with a socket that clicks onto a suitcase.
Crew and team travel
Sports teams, film crews and tour groups moving many cases at once.
Where it is less suitable
- Very heavy, fully packed checked cases - the load on the connector and on the case shell needs testing; heavy pairs may need two connectors per side.
- Existing luggage - the parts are built into the case panel, so this is for new production, not an after-market clip.
Frequently asked questions
How do the two suitcases connect?
A grooved stud on one case is pressed into a socket on the other. A U-shaped spring ring in the socket opens, then snaps into the groove and holds the stud.
How do I separate them?
Lift the case that carries the stud straight up. The stud slides out of the socket.
Will the cases come apart while rolling?
The connector is designed to hold during normal rolling; holding force is set by the ring and groove design and can be increased with magnets or a second connector. It is tested on full cases during prototyping.
Can I still use each case on its own?
Yes. The stud and socket are small, flush parts on the case panel; each case works normally when it is not connected.
Can more than two cases be connected?
Yes, the patent mentions joining two or more cases - a case can carry a socket on one side and a stud on the other.
Does it work on soft-side bags?
Yes. The parts have a flange for sewing or fixing into the panel, so soft bags, duffels and backpacks can carry them too.
Can this design be made and sold in the US?
The patent was filed only in China and has lapsed, so it does not restrict anyone. Other connectable-luggage designs may be patented - see Patent & Production - so we recommend a freedom-to-operate check before volume production.
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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- Case types and sizes to connect (hard-shell, soft-side, bags)
- Connectors per case and magnets or not
- Colors, branding and packaging
- Estimated quantity and target price
- Timeline - when you would like samples and the first shipment
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This page is based on the public patent document CN209862619U, assigned to Cosen (Xiamen) Industrial 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.