BG1587U1 - Composite cam for latch-lock - Google Patents

Abstract

Composite cam (1) for latch-lock, which can be applied in locking devices with higher security for household, public and other buildings, cabinets, safes, etc., where high degree of burglary resistance is required. The composite cam (1), consisting of two equal parts (4), when assembled is a ring (2) with tooth (3). The parts (4) of the cam (1) are fixed to each other, on one side at the ring-shaped area, by clustering around transmission plate (5) with at least two locking teeth (6), clutched in the radial openings (10) of the parts (4) so that they form the closed ring (2), encompassing with its inwardly protruding periphery the rotors (15 and 16) of the lock through the ring-shaped channels (18) formed on their interior edges. On the other side, the parts (4) are connected to each other in the area of the tooth (3) by means of spring pin (13) passing through the longitudinal openings (14) in them and when combined, they form the complete cam (1) coupled with the switch (17) for transmission of the rotary motion of the rotor (15) or (16) to the cam(1).

Description

The utility model refers to a compound lock for a keyhole that will be used in the light industry, in particular in the field of security locks for residential, public and other buildings, cabinets, safes, etc. where a high degree of security is required. burglary resistance.

BACKGROUND OF THE INVENTION

A typical double-sided lock consists of a housing with an external and internal rotor mounted therein by means of spring rings housed in annular grooves made on the inner edges of the rotors, the housing being adapted to be mounted transversely through the lock box, between the two rotors in The housing is a freely mounted rotating pin to drive the locking elements. Said finger is a monolithically filled ring with a tooth, the ring being rotated upon rotation of the outer or inner rotor by means of a switch which transmits to the ring rotational motion from the outer or inner rotor, whichever key is inserted into the lock as a result to which the tooth rotates radially from the lock and drives the locking elements. It is known that, when used, such locks may be attacked when attempting to manipulate the mechanism of the lock. Such attacks can cause the outer rotor to be forcefully removed from the housing, thereby providing access to rotate the thumb. Alternatively, an attempt may be made to break the hull in the central portion that connects the two halves. This part of the body is usually the thinnest and therefore the weakest, since it is adapted to accommodate the rotation of said thumb. If this part of the housing can be broken, then the entire outer half of the lock may be removed, unless specific measures have been taken in the construction of the lock to counter this threat.

A known lock is known [1], in which the two rotors are prevented from being pulled by a special thumb construction consisting of two parts fixed to each other and enclosing the inner edges of the two rotors, due to which the two rotors cannot be pulled when applying axial force. In the area of the ring, the parts of the burn have longitudinal grooves made on the lock, in the first part the channel is made on the outer cylindrical surface of the ring and in the second part on the inner cylindrical surface. In the first part of the thumb, the groove is made back so that the second part of the thumb, passing over the first part, engages in it, forming a closed ring, which with its inward periphery covers the inner edges of the two rotors through the corresponding annular grooves made therein. . At the same time, in the area of the tooth, the thumb is transversely separated from the two parts so that when they are secured to each other by a spring pin, passing through longitudinal openings in the tooth, they form one whole finger. To facilitate mounting, the inner cylindrical surface of the engaging second portion of the thumb in the tooth region is extended outwards.

The formation of the two components of this finger requires additional milling, turning and other operations, which increases the cost and complicates the installation procedure.

The technical nature of the utility model

The purpose of the present utility model is to provide a compound lock for a lockable lock, resistant to the aforementioned attacks, by providing axial coupling of the two rotors of the lock by means of a folded finger, with a simple and technologically efficient construction to provide easy installation and reducing the cost of making the thumb.

To accomplish this, a compound lock for a two-piece lock is created, which in the assembled state is a ring with a tooth, said parts being fixed to each other, on the one hand, in the annular region so as to form a closed ring covering the inner edges of the lock rotors through the periphery extending beyond them

1587 W annular grooves, and on the other hand, in the region of the tooth, where the parts are connected to each other by a spring pin, passing through the longitudinal openings made therein, so that the parts form one whole finger, glued to the switch, to transmit rotary motion from the corresponding rotor by means of the exact key inserted into the rotor to the thumb.

According to the utility model, the two parts of the thumb are the same, and when assembled they are symmetrically mirror to the axis of the thumb, whereby in the ring region, the parts are joined by clamping around a transfer plate with a profile opening for engagement with the switch and with at least two locking teeth engaged in radial openings in the parts of the thumb, the plate being enclosed by a groove formed in the parts. According to the utility model, the locking teeth are uniform and have a front radial surface formed for fixing on the radial openings and a rear surface that seamlessly extends to the outer surface of the transmission plate.

The advantages of the compound finger according to the utility model are that said pin providing axial coupling of the two rotors is assembled into two equal parts, which reduces the cost of its manufacture. Furthermore, the clamping of the two parts proposed in the structure facilitates the assembly of the thumb on the one hand, and on the other makes the construction technologically efficient, since the transmission plate by which the clamping is performed simultaneously serves to transmit rotational motion from the rotor to the thumb. .

Explanation of the annexed figures

The utility model is explained in more detail with the aid of the accompanying figures, of which: Figure 1 is a partial view of a secret lock with a compound finger in the region of its connection to the two rotors in the housing of the lock;

Figure 2 is a frontal view of an assembly thumb with a partial incision in the area of fixation of one of the parts of the thumb;

Figure 3 is a side view of an assembled thumb;

Figure 4 is a front view of the thumb disassembled;

Figure 5 is a side view of the thumb portion 4.

Examples of implementation of the utility model

An exemplary embodiment of a compound lock for a lock is shown in FIG. 1, 2, 3,4 and 5, wherein the locking finger 1 of the lock consists of two parts 4, in the assembled state the finger 1 represents a ring 2 with a tooth 3. The parts 4 are fixed to each other, on one side, in the annular region so as to form a closed ring 2 enclosing with the inward periphery the inner ends of the rotors 15 and 16 of the lock through the annular grooves formed thereon 18. On the other hand, in the area of the tooth 3, the parts 4 are connected to each other by means of a spring pin 13 passing through the longitudinal ones made therein openings 14 so that, complementary to each other, the portions 4 form one whole finger 1 engaged with the switch 17 to transmit rotary motion from the rotor 15 or 16 by means of the exact key inserted thereto to the thumb 1. According to the utility model, the parts 4 of the thumb 1 are the same and, when assembled, are symmetrically mirror to the axis 12 of the thumb 1, which can be seen from the attached figures. In the region of the ring 2, the parts 4 are joined by clamping around a transfer plate 5 with a profile opening 9 to engage with the switch 17, and with it two locking teeth 6 engaged in radial openings 10 made in the parts 4, such as the plate 5 is enclosed by a groove 11 formed in the portions 4 of the thumb 1. In this case, the locking teeth 6 of the transfer plate 5 are uniform and have a front radial surface 7 formed for fixing on the radial openings 10 and a rear surface 8 which is shaped to pass smoothly. to the outer surface of the transmitter minutes plate 5.

The utility model can be applied for protection against hacking attacks in both bilateral and unilateral locks, locks with handles and special function locks whose performances are equally included in the scope of the utility model, without any size restrictions and with any and be the type of reversing mechanism mounted in the lock

1587 W decoding the key.

Claims (2)

A compound finger (1) for a two-piece lock (4) which, when assembled, represents a ring (2) with a tooth (3), the parts (4) being fixed to each other on one side, in the annular region so as to form a closed ring (2), enclosing with the inward periphery the inner edges of the rotors (15 and 16) of the lock through the annular grooves (18) formed thereon, and, on the other hand, in the tooth region (3), where the parts (4) are connected to each other by means of a spring pin (13) passing through the fabricated therein. longitudinal openings (14) such that, complementary to each other, the parts (4) form a single finger (1) engaged with the switch (17) to transmit rotary motion from the rotor (15) or (16) through the inserts therein an exact key to the thumb (1), characterized in that the two parts (4) of the thumb (1) are the same and, when assembled, are symmetrically mirror to the axis (12) of the thumb (1), whereby in the ring region (2) the parts (4) are joined by clamping around a transfer plate (5) with a profile opening (9) to engage with the switch (17) and with at least two locking teeth (6); our in radial holes (10) in the portions (4), the plate (5) is surrounded by a channel (11) formed in the parts (4) of the cam (1). Composite thumb (1) according to claim 1, characterized in that the locking teeth (6) are uniform and have a front radial surface (7) formed for fixing on the radial openings (10) and a rear surface (8) which smoothly goes to the outer surface of the transmission plate (5).