DE322476C - Insert lock with self-springing tumblers sliding on the stepped circumference of the key socket - Google Patents

Description

The invention relates to insert locks of the type that fit into an ordinary lock Can be retrofitted and with a relatively small key are to be closed, which in turn only the actual locking bit remaining in the lock emotional.

The new lock is in a known manner with a plurality of self-resilient

ίο tumblers fitted. The novelty persists mainly in the particularly simple fastening as well as in the advantageous tensioning of the spring-loaded tumblers by wedging them in slot-shaped recesses arranged tangentially to the key guide cylinder in the housing core, then in the guide surfaces provided on the housing core, radially to the cylinder, for the free, movable ones Ends of the tumblers that do this at the same time

ao serve to support the tumblers in the event of a possible, more or less violent one Opening the lock with a key that does not fit exactly, and further also in the fact that the edges of the radial end faces of the free ends of the preferably made tumblers made of hard wire on the mating or sensing surfaces of the cylinder and of the key bit due to its own elasticity always slide with force and scraping.

These guide surfaces also prevent the hook-shaped ends of the Tumblers from the slot-shaped recesses in the housing core.

This arrangement of the tumblers has the advantage of larger ones over known ones Simplicity as well as sensitivity and thus also greater security, since it is a significant increased accuracy of execution allowed.

In the drawing, an exemplary embodiment of the new insert lock is shown in FIG. 1 in a front view. Fig. 2 shows a cross section along line AB of Fig. 1. Fig. 3 shows the lock with the cover removed.

The hook-shaped ends of the resilient wire tumblers α are clamped in corresponding slot-shaped recesses in the housing core d arranged tangentially to the key guide cylinder b .

The parts of the tumblers α bent approximately radially to the cylinder b rest loosely on guide surfaces on the housing core d arranged parallel to them, while the free ends of the tumblers α pressed against the mating or sensing surfaces of the cylinder b and the key bit due to their own elasticity are sharply bent are, so that their radial end faces oppose a not exactly fitting key bit the more increasing resistance, the more they are pressed against the guide surfaces of the housing core d , as well as so that the ends of the tumblers penetrate into any ■ cavities created by a key bit that is too short to prevent rotation of the housing core. the

Prevent guide surfaces on the housing core also any tangential movement of the tumblers.

The inner edges of the end faces of the resilient wire tumblers α slide scraping and correspondingly resiliently non-positive on the mating or sensing surfaces of the key guide cylinder b and the key bit and thereby achieve a degree of accuracy and sensitivity that cannot be achieved by ordinary tumblers.

Claims (2)

Patent Claims: i. Insert lock with self-resilient tumblers sliding on the stepped circumference of the key socket, characterized in that the hook-shaped ends of the resilient wire tumblers are clamped in slot-shaped recesses of the housing core (d) arranged tangentially to the key guide cylinder (b) , in such a way that the edges of the radial end faces of the sharply bent free ends of the tumblers slide with a springy force-fit and scraping on the corresponding mating or sensing surfaces of the cylinder (b) and the key bit, while parts of the tumblers bent radially to the cylinder are in loose contact with guide surfaces arranged parallel to them on the housing core. 2. Insert lock according to claim 1, characterized in that surfaces on the housing core (d) arranged radially to the cylinder (&) prevent tangential movement of the tumblers (<x). 1 sheet of drawings.