DE461116C - Safety lock for doors u. like - Google Patents

Description

There are already safety locks for doors and the like. Known in which a locking bolt can be moved from the outside through a secret opening provided in the door or in the door frame or a pin and either in the closed position is brought or unlocked. In these devices, however, there is the disadvantage that the locking bolt to roll over guided and connected at the free end in a suitable manner loaded tension member which not only complicates the operation of the bolt and requires a relatively very long needle or pin, but also a safe effect very much into question. In addition, this is what Zugorgau does the lock on the door is quite conspicuous, so that unauthorized persons can take a quick look at this device and its Wi rao knowledge.

This disadvantage is remedied by the invention in such a way that two to Cam disks offset by i8o ° to one another be set in rotation by means of ratchet wheel and pawl and here on an am Locking bolt of the door connected slide alternately brought into effect will. For this purpose, the pawl is attached to a spring-loaded lever hinged, which moves the locking bolt forwards or backwards with every two oscillating movements, while a second pawl prevents the ratchet wheel and therefore the cam disks from turning back. The rocker arm to turn the cams is opposite the secret opening in the door and can be opened with a slight pressure Move the Xadel, whereby the movement, which takes place in two stages, is a very short Xadel requires.

This closure can be arranged on the left or right depending on the type of door, there the slide to be connected to the bolt always opens and closes in each case shifts two steps and is set up on both ends for connecting the latch. By encapsulating the closure, its mode of operation remains secret, although the same is deceptively similar to a lock operated by a key.

In the drawing, an embodiment of the closure is shown; it shows:

Fig. Ι a top view of the same in the closed position attached to a door,

Fig. 2 is a side view of Fig. 1 seen from the right against the door and

Fig. 3 is a plan view of the release and locking device on a larger scale.

The trigger and locking device consists of two to a pin ρ rotatably disposed and to i8o ° offset interconnected cams η and ρ on the same pin with the cam η Associated ratchet 0. To the pin j is the ν under the action of the tension spring standing lever q arranged oscillating, which is under the action of the spring s and engaging in the ratchet 0

Pawl r carries. A second pawl t under the action of the spring u engages on the opposite side in the ratchet wheel ο and prevents the ratchet wheel and the cam disks n from turning back.

The whole is arranged in the U-shaped bracket i , in which the slide h, which is provided with two stops and carries the leaf spring I , is also arranged in order to prevent it from being pushed back automatically. Below the ratchet wheel ο, a crossbar nf ^{1 is} attached in the bracket i , which serves as a stop for the limiting hook w . The bracket i is carried by the two brackets k, which are screwed to the door α. The bolt c, which is slidably arranged on the door α to the side of the door frame b and is provided with a handle e , is connected to the slider h by the rod m , f is a limiting pin for the bolt c and d the bolt latch.

If a needle s is now inserted through a secret opening y in the door at the level of the lever q , it hits the lever q and rotates it around its pin /, the pawl r rotating the ratchet wheel 0 and the two cam disks η vim 45 ° . In this case, the one cam strikes the one stop of the slide h and moves it by half the bolt travel. By releasing the lever q with the needle 2, the same is brought back into its initial position by the tension spring υ , whereupon a renewed actuation of the lever q causes a further rotation of the cam disks η by 45 ⁰ , the latter with its rounded tips pushing the slide h by the Shift the rest of the bolt path. Now the bolt c is completely in the trap d. If the lever q is actuated again, the rounding of the second cam disk η first hits its stop on the slide h and pulls the same and consequently the bolt c back by half the bolt path, whereupon a further rotation of the cam disk completely removes the slide h and bolt c withdraws.

With the next movement of the lever q the other cam disk η comes into action, so that two movements of each cam disk η bring about a closing and opening of the bolt.

Claims (4)

Patent claims: I. Safety lock for doors and the like, which is actuated through a secret opening provided in the door or in the door frame by a needle or the like to be passed through, characterized in that the needle acts on a resilient rocking lever (q) when it is pierced, wherein By changing the position by means of a ratchet wheel (0) and a pawl (V), two cam disks (s) arranged offset from one another by 80 ° are rotated by 45 ° each and, when rotated 90 °, a slide Qi) connected to the door bolt alternately forwards and forwards withdraw. 2. Fuse lock according to claim i, characterized in that a turning back of the cam disks («) by a second in the ratchet wheel (0) oppositely engaging pawl (i) is prevented. 3. Safety lock according to claim ι and 2, characterized in that the oscillating movements of the lever (q) are limited by a stop (w ¹ ) and hook (w). 4. Safety lock according to claim ι to 3; characterized in that the slide (/ 1) moved by the cam disk (s) _{is carried out on both sides g 5} in order to enable the door bolt to be actuated for left and right-hand closing doors. 1 sheet of drawings.