SK278372B6 - Safety lock - Google Patents

Abstract

THE SAFETY LOCKING MECHANISM The locking mechanism is created based on the safety fitting piece (3), equipped by the rotating ring (2) on the outer side and by the holder (12) on the internal side. On the safety fitting piece (3), there is a spacing collar (4) placed in the guiding sleeve (5), located in the hole of the door (1). The bushing (6) of the tumbler (20) and the spring bushing (7) is placed after the safety fitting piece (3). These components are placed in the working bush (9), equipped by the working plate (10). The working plate (10) has spiral slots used for guiding of control plugs (16) and drag-bars (13).

Description

Technical field

The invention relates to an additional security lock of the safe type designed for entrance doors of apartments, houses, cottages and the like.

BACKGROUND OF THE INVENTION

Previously known locks of a similar type and destination are complex and difficult to manufacture. Locks equipped with three or four spreader bars are known. They mostly use a single-bolt locking mechanism, equipped with a gear mechanism for simultaneous control of all installed drawbars. In order to ensure the required safety, it is essential that the drawbar be massive. This in turn implies the need to exert a great force on their displacement, which is further exacerbated by the resistances occurring in the transmission mechanism. It is therefore necessary to install an auxiliary control device to ensure the reliability of the lock.

SUMMARY OF THE INVENTION

Said problem is solved by a security lock according to the invention, especially intended for an entrance door, comprising a security insert and a working plate with guiding spiral grooves through which the pins, which are part of the rods slidably mounted on the door, pass. It is the essence of the lock according to the invention that the security insert is housed in a pivot ring which engages a guide sleeve housed in the door. Between the security insert and the guide bushing, there is a spacer ring on which the tongue bushing, the spring-loaded spring bushing and the connecting plate are connected one behind the other by the through-bolts with the security bushing. In the guide sleeve there is a working sleeve with openings for the tongue pin, wherein a guide plate is screwed onto the guide sleeve between the work plate fixed to the working sleeve and the door.

According to a preferred embodiment, a washer is arranged between the inner guide plate and the door. Likewise, the workpiece can be provided with a pin on which the internal control handle is attached. The connecting plate may be passed into a threaded pin on which the crown nut is screwed.

In the solution according to the invention, a conventional cylindrical security insert is used, which does not need to be specially manufactured, provided with a tongue and a tongue pin. This pin serves for connection to the working sleeve. This connection allows you to lock and unlock. The control of the rods is performed from the outside by a rotating ring. However, it can only be used with the key in the lock. From the inside it is possible to operate the handles directly with the control handle. The transfer of force from the pivot ring or handle to the rods is made possible by a known working plate with spiral grooves and control pins guided therein.

The advantage of the solution is, on the one hand, easy operation, on the other hand low production demands. This is due to the fact that the security insert serves only for its own locking and the control of the rods is served directly by the rotary ring or the rod through the elements located around the circumference of the safety insert. This eliminates the friction resistances that make it difficult to operate in the prior art solutions. At the same time, the compactness of the entire lock guarantees the impossibility of forcibly destroying the security cylinder and the use of a key ring without a key. The security lock does not depend on the thickness of the door, it can be adjusted for thin and solid doors.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further described with reference to the accompanying drawings, in which: FIG. 1 is a longitudinal section through the lock of FIG. 2, FIG. 2 is a view B-B of FIG. 1, FIG. 3 is a sectional view taken along line C-C of FIG. 1 with the two inner sleeves, and FIG. 4 is a view D-D of FIG. 1 for a tab latch lock.

DETAILED DESCRIPTION OF THE INVENTION

In the opening formed in the door 1 there is inserted a guide sleeve 5, in which a lock section consisting of a spacer ring 4 is received, in which a lock security insert 3 of a known embodiment is received. The security insert 3 is seated in the rotary ring 2. On the spacer ring 4 there is a sleeve 6 of the latch tongue 20 and a spring sleeve 7. The housing 6 of the latch tongue 20 has a continuous guide groove for the latch tongue 20 and a bore for the pin 22 of the latch 20. The pin 22 also partially extends into the spring housing 7 in which there is an opening for the spring 18. The tongue 21 of the security insert 3 extends into the opening in the latch tongue 20. The locking section is terminated by a screw-in connection plate 8 which allows the tightening of all the components of the locking section by means of two through-bolts with the security insert 3 into one unit. The working housing 9, inserted into the guide housing 5 from the inside of the door 1, is provided with holes 23 for the pin 22 of the tongue 20. After insertion into the working sleeve 9, the sliding washer 17 and the locking crown nut 19 with a cotter pin are mounted on the screw of the connecting plate 8. An inner guide plate 14 is screwed to the guide sleeve 5, under which is a washer 15. On the guide plate 14, the working plate 10 is connected by screws 24 to the working housing 9. This working plate 10 has four helical grooves. On the working plate 10 there is an outer guide plate 11 which is connected to the inner guide plate 14 by screws with spacers. A pin for attaching the inner handle 12 is attached to the work plate 10. The outer guide plate 11 has four axial grooves through which the control pin 16 of the drawbar 13 passes. This control pin 16 simultaneously extends through the helical grooves of the working plate 10. The inner guide plate 14 has four axial grooves for the drawbars 13.

It is best to place the security lock in the center of or near the center of door 1. When the key is removed from the security insert 3, the rotary ring 2 located on the outside of the door 1 can be rotated freely. The linkage mechanism 13 remains in the same position, whether it is locked or unlocked. After insertion of the key and its rotation by 90 °, the tongue 21 of the lock insert 3 unlocks the latch tongue 20, which is pushed by the spring 18 so that the pin 22 in the tongue 20 extends towards the working sleeve 9 with holes 23. After turning the rotary ring 2, the unlocked tongue 20 of the lock with the pin 22 of the tongue 20 engages

In the case 23 of the working sleeve 9 and further rotating through 180 °, the rotary movement is transmitted through the pin 22 of the tongue 20 to the working sleeve 9 and hence to the working plate 10 with the helical grooves. This movement is then transmitted from the workpiece plate 10 by helical grooves via the control pins 16 to the linear movement of the rods 13. The rods 13 engage the latches mounted on the three door frames 1, the fourth rod 13 then engages the latch on the floor.

The lock is designed as an additional security device of the active type. Its advantage is easy handling and high efficiency due to four-point locking of the door. It can be used for doors of flats, houses, cottages etc.

Claims (4)

PATENT CLAIMS A security lock, in particular for an entrance door, comprising a security insert and a working plate with guiding spiral grooves through which pins are part of slidingly mounted drawers, characterized in that the security insert (3) is mounted in a rotary ring (2). ), which bears against the guide sleeve (5), wherein between the security insert (3) and the guide sleeve (5) there is a spacer ring (4) on which the sleeve (6) of the tongue (20), the spring sleeve (7) ) with a spring (18) and a connecting plate (8) connected by the through bolts to the security insert (3), and in the guide bush (5) there is a working bush (9) with holes (23) for the pin (22) of the tongue (20) wherein a guide plate (14) is screwed onto the guide sleeve (5) between the work plate (10) attached to the work case (9) and the door (1). Security lock according to claim 1, characterized in that the guide plate (14) is provided on the outside with a washer (15). Security lock according to claim 1 or 2, characterized in that the working plate (10) is provided with a cap on which the internal control handle (12) is attached. Security lock according to claim 1 or 2 or 3, characterized in that the connecting plate (8) passes into a threaded pin on which the crown nut (19) is screwed.