具有应急常开功能的双锁舌锁具
By designing the drive mechanism and normally open device of the double-latch lock, the problem of the latch not being able to be opened for a long time in an emergency is solved, realizing the emergency normally open function of the latch, improving emergency passage efficiency and safety, and making it suitable for various occasions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing locks cannot maintain an open latch for an extended period in emergency situations, leading to difficulty in opening, affecting emergency passage efficiency, and posing safety hazards.
A double-latch lock was designed. The slanted latch is kept open for a long time by means of a drive mechanism and a normally open device. By using the cooperation of the lock hook and the limit groove, combined with the mechanical structure of gears and bolts, the slanted latch can be reliably locked in the unlocked state without affecting the independent control of the square latch.
It achieves the emergency open function of the tongue, improves emergency passage efficiency, has high security, is suitable for a variety of scenarios, and takes into account both convenience and anti-theft needs.
Smart Images
Figure CN224514927U_ABST
Abstract
Claims
1. A double-latch lock with an emergency normally open function, comprising a panel, a square latch mechanism, and a bevel latch mechanism, wherein a driving mechanism is provided between the square latch mechanism and the bevel latch mechanism, the driving mechanism being used to drive the bevel latch mechanism to a locked or unlocked state, characterized in that: The driving mechanism includes a square core seat, a paddle sleeved outside the square core seat, and a driving disk. A limiting groove 1, a limiting groove 2, a stop block, and a paddle block are distributed circumferentially along the driving disk. The paddle block extends into the inclined tongue mechanism. By rotating the driving disk clockwise, the paddle block pushes the inclined tongue mechanism to retract into the panel. A resilient locking hook is provided above the driving disk on the panel. When the inclined tongue assembly is locked, the locking hook engages with the limiting groove 2. When the inclined tongue assembly is unlocked, the locking hook engages with the limiting groove 1. A normally open device is provided at the stop block on the panel. The normally open device includes a pull rod with a hook located above the stop block. The tail end of the pull rod has longitudinally distributed teeth, on which gears mesh. The gears are sleeved around a bolt, and the bolt is threaded with a sleeve post, which is fixed to the panel.
2. The double deadbolt lock with emergency always-open function according to claim 1, characterized in that: The tail end of the lock hook is provided with a torsion spring, which drives the head end of the lock hook to tilt toward the drive disc and is locked in the limiting groove.
3. The double deadbolt lock with emergency always-open function according to claim 2, characterized in that: The oblique tongue mechanism includes an oblique tongue block and a push rod. The tail end of the push rod is provided with a torsion spring II, which is used to push the push rod outward toward the panel. The paddle on the drive disk abuts against the tail end of the push rod.
4. The double deadbolt lockset with emergency always-open function according to claim 3, characterized in that: The pull rod is provided with a strip-shaped groove, and a sliding pin is inserted into the strip-shaped groove to slide with it. The sliding pin is fixed to the inner wall of the panel.