RU2515519C1 - Cylinder lock - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: cylinder lock comprises a body with a cylinder installed in it as capable of rotation, comprising a channel for a key, code and stop pins spring-loaded relative to the body and arranged in the cylinder, forming pairs of movable pins, which are arranged in coaxial holes of the body and the cylinder. Each pair of pins is installed as capable of displacement perpendicularly to the longitudinal axis of the cylinder, besides, the channel for the key in the cylinder is made as stepped with a threshold arranged under ends of stop pins. One stop pin or at least two stop pins are arranged as capable of interaction with the threshold of the cylinder channel in its working and non-working positions.

EFFECT: improved secrecy and simplified design.

10 dwg

Description

The present invention relates to cylinder locks having movable spring-loaded pins and key lock elements to prevent it from being inserted into the lock slot. The invention is intended for use in locks for locking doors, hatches, windows, ignition systems of internal combustion engines, as well as in cases, chests of drawers, in padlock systems, bicycle locks.

In European practice, a lock device with the “Naan” profile is widely known, which characterizes a number of lock devices of this type. A feature of such a locking device is that the lock has one or two cylindrical mechanisms rotated by an inserted key and moving the locking bolt in a given direction.

A cylinder lock is known from the patent documentation, comprising a housing with a rotary core installed in it with a central cross-shaped key hole and pushers radially located in it, interacting with secret key recesses by means of spring-loaded pins bounded on the outside by a protective casing mounted on the outside of the housing, characterized in that the core is made integral, for example, of two symmetrical parts located longitudinally to the axis and has a mustache on the generatrix surface a U-shaped groove in which through the radial holes made in the housing, protective pins are installed, located in the same plane with the pushers, and the protective casing is provided with mounting holes radially made along a helical line with the possibility of their alternating coincidence when the casing is rotated around the c axis holes made in the housing for spring-loaded pins, and the housing from the front side in the axial direction, and the protective casing from the outside in the radial direction provided with mounting holes yami (RU 2049206 C1, 27.11. 1995).

Known cylinder lock mechanism containing a cylinder located in the housing with the possibility of rotation around an axis, coaxial holes are made in the housing and in the cylinder and spring-loaded locking pins and pushers in contact with them are placed, the cylinder is provided with a key channel with protrusions, and a cavity channel for the key is made with the possibility of placing in it the ends of the pushers and their movement with the ends of the protrusions of the key when turning the key, characterized in that the casing is made in the form of a glass, in the bottom of which is made full-time well for the key to pass through it into the channel for the key, the ends of the pushers have a cross-sectional area greater than the cross-sectional area of the pushers themselves, and the key body is made in the form of a round rod, while the key channel contains a round groove for accommodating the rod a key and a protrusion for emphasis in it of pushers (RU 2235177 C1, 08.27.2004).

Known cylinder lock mechanism comprising a housing with radial holes and a central channel, a rotary core installed in the central channel with radial holes coaxial with the radial holes of the housing, spring-loaded pushers and locking pins respectively located in the radial holes of the housing and the rotary core, a key with secret recesses, corresponding locking pin of the rotary core, characterized in that the cylindrical lock mechanism has additional holes in case, the axes of which are parallel to the axis of the central channel, with additional spring-loaded pushers located in them and an additional rotary core placed coaxially with the axis of the central channel, having additional holes coaxial with additional holes in the case, additional locking pins are placed in additional holes of the additional rotary core, interacting with additional spring-loaded pushers, while additional secret notches are made on the key, respectively corresponding to the additional locking pins of the additional rotary core (RU 2112123 C1, 05.27.1998).

A cylinder lock is known comprising a housing, a cylindrical socket formed in said housing, a cylinder that can rotate in said socket, a drive plate that is rotatably connected to said cylinder, a key channel that is axially formed in said cylinder, characterized in that it contains at least one hole that is formed in the said cylinder and crosses the channel for the key, while said hole has two protrusions, one of which lies e outward, and the other lies further inward with respect to the surface of the cylinder, at least one auxiliary pin located in said hole and comprising an auxiliary finger, an additional auxiliary finger and a spring that acts by expanding between the auxiliary finger and the additional finger, and thus to allow the pin to accept an elongated configuration in which the finger and the additional finger are spaced apart and can be axially offset at an angle ohm with respect to each other, or a shortened configuration in which the finger and the additional finger are centered so that they adjoin each other and cannot be displaced in the axial direction, wherein said pin when the key is removed or when a fake key having a removable key is inserted a part adapted to adopt said elongated configuration whereby the auxiliary finger is held in abutment against said inner protrusion and the additional auxiliary finger is held at such a level that to ensure the possibility of angular movements with respect to said auxiliary finger and the possibility of engaging an additional finger on the outer protrusion, while the end of the additional finger remains engaged in the recess of said cylindrical socket, further characterized in that the key is equipped with an elastic element designed to interact with said auxiliary with a pin so that when the key is inserted, the auxiliary pin is compressed to accept a shortened configuration and from Connections from the pin recess and the subsequent rotation of the cylinder (RU 2001112989 A, 20.05.2003).

Known cylinder lock mechanism with plate delays, containing a cylinder installed in the housing with a turnkey channel with the ability to rotate the cylinder, plate delays that are in contact with one another, and the extremes are in contact with the cylinder and (or) with the housing, in the housing on its inner surface two longitudinal grooves for interacting with delays, a plate wrench, characterized in that the turnkey channel is made through in the cylinder, the cylinder is equipped with a flange in which a slot for the key is made, two longitudinal e grooves on the inner surface of the housing are made opposite the turnkey channel, and plate delays are made in the form of rings that are placed around the cylinder with air gaps separating the rings from the housing and from the cylinder, while the rings have two code protrusions that are located opposite the longitudinal grooves on the inner surface of the casing and have lengths determined by the code, the cylinder is inhibited from turning, relative to the rings, and the plate wrench is equipped with a latch for its position and in its working part has a constant Irina equal to the inner diameter of the rings (RU 97102381 A, 20.02.1999).

Known cylinder lock mechanism containing a housing, inside which there are pins fixed by springs, and a working cylinder also having pins located coaxially with the housing pins, and a protrusion for actuating the lock bolts, characterized in that it is provided with an additional cylinder with a well for a key mounted rotatably in the working cylinder and blocking elements according to the number of pins of the working cylinder and located inside the additional cylinder, respectively, for each pin working its cylinder (RU 12697 U, 01/27/2000).

Significant disadvantages of the known cylinder locks is the low level of their secrecy due to the fact that they are unlocked when the cylinder is rotated and the cylinder is held locked by split pins that have a spring clip.

If you enter the key into the lock channel, it makes the joint of the split pins stand flush with the outer surface of the cylinder, which makes it possible to turn the cylinder when using the master key in the form of a hardened steel strip. In this case, the strip is inserted into the lock, the spring-loaded pins are moved to the desired position and the lock is opened.

Of the known locks, close to the lock presented in this description is a cylinder lock containing a housing with a rotatable cylinder having a key channel located in the cylinder and the housing, code and locking pins spring-loaded relative to the housing, forming pairs of movable pins that are located in the coaxial holes of the body and cylinder, each pair of pins is mounted with the possibility of movement perpendicular to the longitudinal axis of the cylinder (US 5765417 A, 06.16.1998). The known lock is technologically complex and time-consuming to manufacture and assemble, while it has low reliability due to the use of a large number of springs, as well as unsatisfactory secrecy.

The technical result of the castle presented in this description is to increase the privacy of the castle and simplify the design.

The technical result is obtained by a cylinder lock containing a housing with a rotatable cylinder having a key channel, code and locking pins spring-loaded relative to the housing located in the cylinder and the housing, forming pairs of movable pins located in the coaxial openings of the housing and the cylinder, each a pair of pins installed with the ability to move perpendicular to the longitudinal axis of the cylinder, characterized in that the channel for the key in the cylinder is made stepped with a shelf, located th under one of the locking pins interacting with the shelf.

Figure 1 shows a General view of a cylinder lock in longitudinal section;

figure 2 is a section aa in figure 1;

figure 3-position of the locking pin after inserting the key into the lock;

figure 4 - position of the locking pin to insert the key into the lock;

figure 5 - lock in front view;

in Fig.6 is a view of B in Fig.5;

7 is a key lock in front view;

in Fig.8 is a view In Fig.7;

in Fig.9 is a view of G in Fig.7;

figure 10 is a key in a perspective view.

The lock contains a housing 1 (Fig. 1), in the cylinder of which a key 2 is located, while in the housing there are cylinder plugs 3 covering the openings of the housing. In each opening of the housing there is a spring 4, as well as movable code pins 5 and the locking pins 6 located below them. Each code pin 5 and the adjacent locking pin 6 form a pair of pins. All pins have different lengths. Each spring is located between the plug 3 and the code pin 5. The pins are located in the holes of the cylinder 7, which is a truncated cone with a slight taper. In this regard, cylinder 7 is conditionally called a cylinder. Each named pin is preferably in the shape of a cylinder, and in cross-section, in the form of a circle.

In the present embodiment of the lock, five pairs of pins are located in the holes 8 of the housing 1 (FIG. 2), which are aligned in height with the key 2 so that the contact line 9 (FIG. 3) of each pair of pins is aligned with the contact point of the housing 1 and cylinder 7 Such a contact point between the housing and the cylinder is located on a line 10 located in the position of the housing and the cylinder, at which the rotation of the cylinder 7 is possible. This rotation is possible in the position where the lines 9 and 10 are aligned in one line.

The key 2 is made of two interconnected plates 11 and 12 (Fig.7-10). A feature of this key is that the extreme lower groove 13 made in the plate 11 is at the level of the upper line 14 (Figs. 1, 7) of the plate 12 (or below the level of the upper line 14). This allows the extreme lower pin 6 from the side of the key before it is inserted into the cylinder against the threshold 17 of the cylinder 7 (Fig.6). To introduce the key into the cylinder 7, a stepped channel 15 is made in it (FIGS. 1, 6), having a reciprocal cross-section in the form of a key 2.

Each pin is made in the form of a cylinder. The locking pin 6 on the right is also a cylinder, the upper part of which is in contact with the lower part of the code pin 5. The end of the locking pin 6 is made conical, with rounded edges at the bottom. The code pin 5 located above the pin 6 is also made in the form of a cylinder, and its lower end interacts with the upper end of the locking pin 6, and the upper part of the code pin 5 abuts against the spring. It is significant that the diameter of each lock pin is greater than the width of the groove 13 on the key, which does not allow the pins to be pushed with the key when inserting the key into the channel 15 of the cylinder 7. The cylinder 7 has at the end of the protrusion 16 (figure 1), designed to interact with the door lock. Channel 15 of the cylinder 7 (figure 3) is made stepwise with a threshold 17 (figure 3). On the outer surface of the cylinder 7 (Fig.5, 6) and the housing 1 are made conical protrusions 18 and 19, protruding outside the castle. The rightmost locking pin 6 does not have to be the last (extreme) pin or one of these pins, as shown in the example of the execution of the lock (figure 1). It can be any of the five lower pins or at least two of any lower pins, it should be noted that such a pin carries the functions of a secret code pin, which has its own secret.

The castle works as follows. After inserting the key into the cylinder, the lower rightmost locking pin 6 (Fig. 1) is in the position shown in Fig. 2. In the working position of the lock, when the key 2 is removed from the cylinder channel 15, the lock springs 4 are in the design position shown in figure 4, and they carry out a small design pressure on the pins from top to bottom, while the springs are not compressed. Since the pins are in the lowest position, this does not allow the use of destructive fluid means for pouring them into the cylinder 7 in order to destroy the pins. In this position, the cylinder 7 is locked in the housing 1, the protrusion 16 (Fig. 1) is in an upright position, and, correspondingly to this position, the locks of the lock (not shown) are located in the sockets of the door box, hatch or lockable sash.

In the position where the key is inserted into the channel 15 of the cylinder 7 and all the lock pins are translated by the key into their working position, one pin, in this case the lowermost locking pin 6 on the far right (Fig. 6), remains in its original position and its lower end surface abuts into the threshold 17 of the channel 15 of the cylinder 7. This does not allow to use the master key, since any inserted master key in the cylinder channel will lift only one pin 6, which is extreme right, abutting against the mentioned threshold. In this case, the pin 5 located above it will rise together with the locking pin 6. The locking pin 6 will block the possibility of turning the cylinder in the housing 1.

The rightmost locking pin 6 is automatically set to its original position after acting on it with a key 2 and removing the key from the lock cylinder. In the working state of the lock, before the key is inserted into the cylinder channel 15, all the pins against the action of the compressed springs 4 abut the threshold 17 of the cylinder 7. After the key is inserted into the cylinder channel, the key groove 13 on the key allows the pin 6, which is lowermost on the right, to abut against threshold 17 of the channel 15 of the lock cylinder. When the lock is locked, the pins hold the cylinder 7 in the locked position, while the locking pin 6, in this case the pin on the far right, is in its free lift position (Fig. 4). When the key 2 is inserted into the channel of the cylinder 7, then when the key is turned, it lifts the pins up, and the pin 6 located on the right remains in the open extended position shown in Fig.6. In this case, the extreme pin 6 is pulled out of the hole of the cylinder 7 by a predetermined distance, regulated by the contacts of the upper and lower lock pins on the line 14, which allows the cylinder 7 to freely rotate in the housing 1. Together with the cylinder, the protrusion 16 of the cylinder rotates (figure 1), which translates the lock lock in working position. It is significant that after the key is inserted into the cylinder channel 15, all the pins are raised to a level that allows the cylinder to rotate, as indicated in FIG. 3. In this case, the rightmost locking pin 6, which was initially in the lower position, remains in this position, since when the key is inserted into the cylinder, the key does not change the initial position of the rightmost locking pin 6, which abuts the threshold 17 of channel 15.

This embodiment of the lock eliminates the use of master keys for turning the cylinder in the lock case, since when the master key plate is inserted into the channel 15 of the cylinder 7, the extreme pin 6 rises from the action of the master key and automatically holds the cylinder 7 in the locked position. This increases the secrecy of the castle by the smallest possible means, which in comparison with other locks of this type allows you to get a simpler design of the castle. Conical protrusions 18 and 19 made on the outer surface of the cylinder 7 and the housing 1 additionally prevent the use of drills for drilling pins in case of breaking the lock, which also increases the security of the lock.

Claims (1)

A cylinder lock comprising a housing, a rotatable cylinder having a key channel, coded and locking spring-loaded pins relative to the housing in the cylinder and the housing, forming pairs of movable pins located in the coaxial holes of the housing and the cylinder, each pair of pins installed with the ability to move perpendicular to the longitudinal axis of the cylinder, characterized in that the key channel in the cylinder is made stepwise with a threshold located under the ends of the locking pins, one n of which, or at least two locking pins arranged to engage the channel threshold cylinder in its working or operating position.

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