Toggle-Unlock Buckle with Combined Opening Motion

The problem

On bags, backpacks, helmets and shoes, conventional buckles separate the unlocking step from the opening step. The user must press or slide a latch to release the connection, then use another hand or a second motion to lift the flap or strap away from the body. This takes time and can be difficult when carrying items or wearing gloves. Additionally, some magnetic closures hold so firmly that pulling them apart requires significant force, while purely mechanical latches may need precise finger placement to release.

The solution

This buckle uses a two-module structure where the act of lifting the cover also triggers the release mechanism.

1. A first connecting module (10) carries a convex lock tongue (11).
2. A second connecting module (20) has a fixing hole (223) that accepts the lock tongue along a locking direction.
3. Inside the second module, a rigid locking part (231) extends across the fixing hole to catch the lock tongue.
4. An unlocking piece (23) pivots within the second module, with an exposed toggle portion (233) outside the housing.
5. When the toggle portion is shifted away from the first module, a pressing part (237) on the unlocking piece pushes a pushing part (238) on the locking part, moving it rigidly out of the fixing hole to free the lock tongue.
6. Because the toggle shift follows the opening direction, lifting the toggle simultaneously releases the lock and raises the attached cover.

Who it is for

• Bag and backpack brands looking for a single-motion closure on school bags, knapsacks or messenger flaps, where users often carry items in one hand.
• Helmet manufacturers needing a secure chin-strap or visor fastener that opens quickly with a natural lifting motion.
• Footwear companies designing shoes with mechanical straps or covers that benefit from tool-free, rapid adjustment.
• Outdoor gear makers producing cases or pouches where gloved operation makes standard small latches difficult to manipulate.

How it works

The main parts

Locking and unlocking steps

1. Alignment - The first connecting module approaches the second connecting module. If magnets are present, they attract to align the parts.
2. Insertion - The lock tongue (11) slides into the fixing hole (223) along the locking direction.
3. Engagement - The first elastic connection portion (234) pushes the rigid locking part (231) to extend into the fixing hole range, catching the lock tongue.
4. Unlocking - The user shifts the toggle portion (233) away from the first module. The unlocking piece (23) pivots.
5. Release - The pressing part (237) pushes the pushing part (238), driving the locking part (231) rigidly out of the fixing hole. The lock tongue is freed.
6. Opening - The continued lifting motion separates the modules and opens the cover in one movement.
7. Reset - Releasing the toggle allows the second elastic connection portion (235) and first elastic connection portion (234) to return all parts to the locked state.

Applications

School bags and backpacks

Students frequently open and close flap-style school bags. Mounting the first module on the bag body and the second on the flap allows the student to lift the flap’s edge to simultaneously release the buckle and open the bag, saving time when accessing books.

Helmets

Chin straps or visor covers on helmets require secure closure that opens rapidly. The toggle motion aligns with lifting the visor or unfastening the strap away from the face, allowing one-handed operation without fumbling for a small release button.

Footwear

Shoes with mechanical closures or adjustable straps benefit from a buckle that releases when the strap is pulled upward. The rigid locking part holds the shoe snug, while the toggle provides a clear grip point for removal.

Outdoor equipment cases

Hard or soft cases used outdoors often have covers that must be opened while wearing gloves. The exposed toggle portion provides a large surface to lift, and the combined motion avoids the fine motor skills needed for standard side-release buckles.

Where it is less suitable

• Heavy structural loads - The patent describes applications for bags, helmets and shoes; it does not specify load ratings for industrial rigging or heavy cargo tie-downs.
• Continuous high-tension straps - Environments requiring constant extreme tension may exceed the capacity of the rigid locking part dimensions described.
• Fully concealed closures - The toggle portion must remain exposed outside the housing for the user to shift it, making it unsuitable for designs requiring invisible fasteners.