Hook latch

Patent metadata

Field	Value
Publication number	US-9677306-B2
Application number	US-201313914265-A
Country	US
Kind code	B2
Filing date	Jun 10, 2013
Priority date	Jun 11, 2012
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

The invention pertains to a lock ( 10 ) for locking a mobile structure to and unlocking it from a fixed structure ( 11 ) on a vehicle, one of the two structures containing a first keeper ( 14 ), the other structure containing a second pin ( 16 ) around which the lock can pivot, the lock comprising:
A lock strut ( 19 ) containing a hook ( 33 ) able to latch onto the keeper; A handle ( 17 ) with a third pin ( 28 ) around which the lock strut can be guided in its rotation, the second pin ( 16 ) being located toward the handle ( 17 ) in relation to a plane ( 29 ) formed between the first keeper ( 14 ) and the third pin; and a fourth pin ( 46 ), located between the handle and a first side ( 35 ) of the lock strut; A first connecting rod ( 45 ) linking the third pin ( 28 ) to the fourth pin ( 46 ); A second connecting rod ( 48 ) linking the fourth pin ( 46 ) to the second pin ( 16 ), and a fifth pin ( 49 ) located against a second side ( 50 ) of the lock strut opposite the first side ( 35 ).

First claim

The invention claimed is:

1. A lock for locking a mobile structure to and unlocking it from a fixed structure of a vehicle, one of the two structures containing a keeper, the other structure containing a first pin around which the lock can pivot, the lock comprising:
a lock strut containing a hook able to latch onto the keeper and comprising a first side in contact with the first pin;
a handle having a second pin around which the lock strut can pivot, and having a third pin, located between side edges of the handle;
a first connecting lever linking the second pin to the third pin;
a second connecting lever linking the third pin to the first pin;
wherein the second connecting lever contains at one end a fourth pin in contact with a second side of the lock strut, said second side being opposite the first side, wherein, to latch or unlatch the hook from the keeper, the handle is pivoted around the second pin such that the first side of the lock strut slides on the first pin, and the fourth pin slides on the second side of the lock strut.

2. A lock according to claim 1 , in which the second connecting lever is L-shaped.

3. A lock according to claim 2 , in which the lock strut comprises a distal section on the first side opposite the hook, consisting of a groove forming a first stop able to block the first pin from moving toward the hook, and a second stop able to block said first pin from moving in a direction away from the hook.

4. A lock according to claim 3 , in which the length of the second connecting lever is defined so that when the hook is latched onto the keeper, the first pin is pushing against the first stop.

5. A lock according to claim 3 , in which the length of the second connecting lever is defined so that when the hook is not latched onto the keeper, the second pin is pushing against the second stop.

6. A lock according to claim 1 , in which the handle side edges have each an oblong opening, the third pin being able to slide in said openings.

7. A lock according to claim 1 wherein the second side of the lock strut has a convex edge, from a first end located near the hook to a second end opposite the first end, located near the second pin.

8. A lock according to claim 1 , wherein the fourth pin is linked to a control rod able to control the triggering of an adjacent mechanism when the lock is engaged in a locked or unlocked position.

9. A lock according to claim 1 , in which the lock strut comprises a distal section opposite the hook, consisting of a groove forming a first stop able to block the first pin from moving toward the hook, and a second stop able to block said first pin from moving in a direction away from the hook.

10. A lock according to claim 9 , in which the length of the second connecting lever is defined so that when the hook is latched onto the keeper, the first pin is pushing against the first stop.

11. A lock according to claim 9 , in which the length of the second connecting lever is defined so that when the hook is not latched onto the keeper, the first pin is pushing against the second stop.

Assignees

• Lisi Aerospace

Inventors

• Defrance Vincent

Classifications

• B64D29/06 Primary

  Attaching of nacelles, fairings or cowlings · CPC title

• E05C19/145

  flush · CPC title

• E05C19/14

  with toggle action · CPC title

• E05C19/10 Primary

  Hook fastenings; Fastenings in which a link engages a fixed hook-like member · CPC title

• Y10T292/0918

  Rigid · CPC title