Ascender device with cam for belaying on a fixed rope

1. An ascender device for belaying on a fixed rope, comprising:

a body with a trough for the rope to pass through, an actuating lever having a pivot, a cam for clamping the rope, and a hole for attaching a safety means,

a connecting part arranged between the pivot and the body to move the actuating lever between an inactive position in which the rope is inserted in the trough and an active position in which the ends of the pivot are housed in aligned recesses of the body acting as bearings,

a lock to perform securing of the pivot in the recesses in said active position or to allow it to escape when moving to the inactive position of said actuating lever,

wherein the lock is a double lock comprising a first lock and a second lock to secure the two opposite ends of the pivot in the recesses, each lock being associated with an unlocking tab to unlock the latter, the connecting part is formed by a rigid connecting arm articulated on the pivot and body, and the first lock is mounted pivoting on a first pin that passes through a button-hole of the connecting arm.

2. The ascender device according to claim 1 , wherein the second lock is mounted pivoting on a second pin which is aligned in the parallel direction with the first pin.

3. The ascender device according to claim 1 , wherein a torsion spring is associated with each lock to bias the latter to a position securing the pivot, and the trough is located between the two locks.

4. The ascender device according to claim 1 , wherein the connecting arm extends in a plane parallel to the actuating lever and operates in conjunction with a stop in proximity to the hole.

5. The ascender device according to claim 4 , wherein the body is equipped with a slot for insertion of the connecting arm when moving between the active and inactive positions, said slot being situated parallel to the trough.

6. The ascender device according to claim 1 , wherein the connecting part is formed by a cable.