RU2777324C2 - Electronic lock (options) - Google Patents

Abstract

FIELD: locking systems.

SUBSTANCE: group of inventions relates to electronic locks that can be used in public buildings, hotels and other premises, access to which must be provided to a rather wide range of people. The electronic lock contains a mortise lock mechanism, a mechanical cylinder, and inner and outer face panels equipped with lever handles. The outer panel is equipped with a nameplate attached to the lock by means of a screw. The screw is installed in a cylinder located on the inner side of the nameplate. Cylinder edges are pressed in such a way that the screw can freely rotate inside the cylinder and not to fall out of it. According to the second option, the attachment of lever handles to face panels is performed by means of a reinforcing ring and a reinforcing washer.

EFFECT: increase in the service life and structure protection from vandalism.

15 cl, 5 dwg

Description

The invention relates to electronic locks that can be used in public buildings, hotels and other premises, access to which must be provided to a fairly wide range of people.

From the source CN 209637390 U, publ. 11/15/2019, an electronic lock is known that contains a code panel, a larva and a push handle for opening the door. The larva is closed with a nameplate tightly inserted into the nest. The disadvantage of this device is the insufficient protection of the lock cylinder from vandalism, since the nameplate is held in the socket only due to the tension created. Also, the disadvantage is the increased requirements for the accuracy of manufacturing the nameplate and the socket for it, since in the case of inaccurate manufacturing of parts, the nameplate may either not fit into the socket, or may fall out of it.

From the source CN 209509741 U, publ. 10/18/2019, an electronic lock is known, containing a push handle for opening the door, a larva and a contactless access card reader. The disadvantage of this device is the insufficient protection of the handle and the larva from vandalism, since access to the lock larva is through a hole in the casing, and the handle is installed in the casing without the use of reinforcing rings. In the event of acts of vandalism, such a handle can be easily broken out of the casing, the lock cylinder can be broken, for example, by putting wood chips into it, or by sticking it with chewing gum. That is, when replacing the lock, it will be necessary to completely replace the casing, handle, lock mechanism and lock cylinder. In addition, after the parts of the lock listed above are broken, intruders may have access to the internal elements of the lock, and, as a result, access to a room equipped with such a lock.

The objective of the invention is to overcome the shortcomings of the prototypes by creating a design that is protected from vandalism.

The technical result is the creation of a structure protected from vandalism, the complication of unauthorized access to a closed room, as well as an increase in the service life of the lock structure. The technical result is achieved due to the following design features of the electronic lock:

• the lever handle is fixed in the casing of the electronic lock with reinforcing rings;

• The nameplate is secured to the body of the lock with a captive hexagon head screw.

The achievement of the technical result is ensured by the special design of the front panel of the electronic lock. The front panel is equipped with a magnetic card reader, lever handle and a hole for access to the mechanical lock cylinder. The mechanical cylinder is intended for access to the premises in cases where it is impossible to use electronic access (for example, the batteries that provide power to the electronic lock have run out, or a software failure has occurred in the electronic part of the lock). At the same time, the design of the electronic lock does not provide for the use of a mechanical cylinder as a working means of unlocking the lock, since this can lead to its premature failure. In addition, in the event of acts of vandalism, the mechanical cylinder can be rendered unusable using, for example, chewing gum or wood chips.

In the proposed design, the mechanical cylinder is covered with a nameplate, in which a captive screw with an internal hexagonal head is installed. The screw is placed in the cylinder on the inside of the nameplate, and several cuts can be made in the cylinder. The sawn edges of the cylinder are pressed inward so that the screw does not fall out of the cylinder and at the same time can rotate freely. On the front panel of the nameplate, opposite the center of the screw head, drill a hole large enough to insert a hex key. This design does not allow the nameplate to be removed without the use of an internal hex key, therefore, attackers will not be able to get to the mechanical cylinder.

If it is necessary to further complicate access to a mechanical cylinder, instead of a screw with an internal hexagon, a screw with “secret” heads can be used, for example, type HEX-PIN (internal hexagonal head with a pin), TORX-PIN (internal TORX with a pin), etc. .

Another weak point of the locks is the push handle, which can be broken out of the front panel in case of acts of vandalism. In the proposed design of the lock, the handle enters the body of the front panel and abuts against the reinforcing ring. In this way, the breakout load is distributed over a larger area of the front panel, thereby increasing the maximum permissible load, as well as increasing the life of the handle and the front panel. In addition, a reinforcing washer is installed on the inside of the front panel, which also prevents the handle from breaking out of the front panel during operation of the lock.

The invention is illustrated by figures, where in Fig. 1 shows a general view of the handle assembly with the front panel, Fig. 2 shows the place where the handle is attached to the panel, in Fig. 3 shows a general view of the installed nameplate, Fig. 4 shows the principle of a captive screw, FIG. 5 shows the installation diagram of the nameplate.

The electronic lock contains two front panels, one of which is installed from the inside of the room (rear or inner panel), and the other outside the room (front or outer panel), a mortise lock mechanism, a battery compartment and a cylinder with a set of keys. A push handle and a “night latch” are installed on the inner panel, designed to block the lock from inside the room. A magnetic reader, a push handle and a nameplate covering the mechanical lock cylinder are installed on the outer panel.

The attachment of the push handle to the inner and outer front panels is the same. The handle 1 passes through the body of the front panel 2 and abuts against the reinforcing ring 3. On the inside of the front panel, a reinforcing washer 4 and a spring 5 are installed, which returns the handle to its original position. Locking washer 6 fixes the handle in a horizontal position and does not allow the handle to deviate more than 60° relative to the axis of rotation. The lock washer 7 prevents the nut 8 from unscrewing itself. The height of the reinforcing ring is 10±2 mm. The tolerance for the height of the ring and its size is due to the technological capabilities of production.

The lever handle 1 has a stepwise thinning at the point of contact with the reinforcing ring 3. The thinned part of the handle enters the extension in the upper part of the reinforcing ring 3. At the end, the handle has a thread for installing the fixing nut 8. The ring also has a stepped thinning at the stop against the front panel. The thinned part of the ring 3 enters the hole in the front panel 2. On the inside of the front panel, a reinforcing shoulder is made around the hole. The inner diameter of the reinforcing washer 4 is larger than the outer diameter of the reinforcing shoulder. The assembled design prevents both breaking out of the handle from the body of the front panel and its pulling out, with the application of appropriate efforts, which leads to an increase in the service life of the lock, as well as an increase in its anti-vandal properties.

Nameplate 9 is installed only in the outer front panel. A screw 10 with an internal hexagonal head is placed in a cylinder on the inside of the nameplate 9. A hole 12 is made on the face of the nameplate 9, the diameter of which must be sufficient to pass the key. The hole is located opposite the center of the screw head. The edges of the cylinder 11 are pressed inward so that the screw does not fall out and can rotate freely inside the cylinder. To facilitate pressing the edges of the cylinder, notches can be made on them. The cylinder can be fixed to the inside surface of the nameplate using any suitable permanent connection, such as soldering, welding, spot welding, gluing, etc. The nameplate can be attached to the front of the lock, or to a mechanical cylinder.

The nameplate 9 can be attached to a threaded base plate 13, which is installed in the front panel 2 with screws 14 through a plastic spacer 15. The base plate screws can be covered with a decorative plate 16.

Protecting a mechanical cylinder with a nameplate of the proposed design leads to a complication of access to the cylinder, since it requires a special tool for access. In addition, cleaning the hole in the nameplate from chewing gum or other contaminants is much easier to carry out than cleaning the keyhole.

Claims (15)

1. An electronic lock containing a mortise lock mechanism, a mechanical cylinder and inner and outer front panels equipped with push handles, characterized in that the outer panel is equipped with a nameplate attached to the lock with a screw, while the screw is installed in the cylinder located on the inside nameplate, and the edges of the cylinder are pressed in such a way that the screw can rotate freely inside the cylinder and not fall out of it. 2. The lock according to claim 1, characterized in that notches are made on the edges of the cylinder. 3. The lock according to claim 1, characterized in that the nameplate is made with a hole opposite the screw head. 4. A lock according to any one of the preceding claims, characterized in that a hexagon socket head screw or a security socket head screw is used. 5. An electronic lock containing a mortise lock mechanism, a mechanical cylinder and inner and outer front panels equipped with push handles, characterized in that the outer panel is equipped with a nameplate attached to the lock with a screw, while the screw is installed in the cylinder located on the inside nameplate, and the edges of the cylinder are pressed in such a way that the screw can rotate freely inside the cylinder and not fall out of it, and the lever handles are fastened to the front panels using a reinforcing ring and a reinforcing washer. 6. The lock according to claim 5, characterized in that notches are made on the edges of the cylinder. 7. The lock according to claim 5 or 6, characterized in that one part of the reinforcing ring is made expanded, and the opposite part is thinned, and the thinning is made in steps. 8. The lock according to claim 7, characterized in that the push handle rests against the expanded part of the reinforcing ring, and the thinned part enters the opening of the front panel. 9. The lock according to claim 8, characterized in that a shoulder is made from the inside of the front panel around the hole intended for the passage of the reinforcing ring. 10. The lock according to claim 9, characterized in that the inner diameter of the reinforcing washer is larger than the outer diameter of the collar. 11. The lock according to any one of paragraphs. 6 - 10, characterized in that the end of the handle, which enters the reinforcing ring, has a stepped thinning, and the stop of the handle in the ring is carried out at the place of this thinning. 12. The lock according to claim 11, characterized in that the thinned end of the handle contains a thread. 13. Lock item 12, characterized in that a reinforcing washer, a spring that returns the handle to its original position, a fixing washer, a lock washer and a nut are installed on the inside of the front panel, and the nut is screwed onto the thinned threaded end of the handle. 14. The lock according to any one of paragraphs. 6 - 13, characterized in that the nameplate is made with a hole opposite the screw head. 15. The lock according to any one of paragraphs. 6 - 14, characterized in that a screw with an internal hexagonal head or a screw with an internal secret head is used.

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