RU2315162C1 - Door lock - Google Patents

Abstract

FIELD: protection of different objects against intrusion.

SUBSTANCE: lock comprises body provided with cavity and cross-bar reciprocating inside the cavity. Device also has means to provide cross-bar retention in locked position. Cross-bar is made as a separate part. If one of said components is fixed to movable door member another one is secured to fixed door member. Cross-bar is made as plate with shaped cut of varying width having round section located in area of cross-bar cooperation with locking member. The round section has diameter exceeding width of linear shaped cut section beginning from plate end. Means for cross-bar fixation in locked position is made as rotary cylindrical shaft installed in lock body so that the cylindrical shaft may rotate about axis transversal to cross-bar surface. Shaft has cross-section corresponding to rounded shaped cut section diameter. Shaft has grooves arranged in area of shaft cooperation with cross-bar. Distance between groove bottoms exceeds width of linear shaped cut section. Groove widths are not less than cross-bar thickness. Shaft has rotary means made as rotary drive, which is preferably driven by means of controller.

EFFECT: increased reliability of cross-bar fixation in lock body and improved breaking-in resistance.

2 cl, 5 dwg

Description

The invention relates to locks, preferably electromechanical.

A door lock is known which comprises a spring-loaded bolt mounted in the housing and a spring-loaded sleeve with a cam that interacts with the bolt. The housing also has a locking mechanism, including an electromagnet and an electromagnet anchor, which is directly a means of blocking the crossbar movement (see SU 972024, ЕВВ 47/02, 1982).

The disadvantages of the device are that the electromagnet in the blocking mode consumes a large amount of electric power, this does not allow the lock to be powered from autonomous small-sized power sources, which significantly narrows the scope of its practical application.

A door lock is also known, comprising a housing provided with a cavity configured for reciprocating movement of a bolt in it, and means for fixing the bolt in the locked position (see US Pat. No. 2174581, ЕВВ 47/00, 2001). The lock is characterized by low energy consumption, because to bring the lock nodes to the locked position, it is not necessary to supply power to the bolt fixation device, and to bring the lock mechanisms to the unlocked position, only a short voltage pulse is required, which greatly simplifies the requirements for the power supply and control device the castle.

The disadvantages of the device are the insufficient reliability of the bolt fixation, low burglar resistance of the lock (there is a possibility of mechanical extraction of the door in the door frame, there is the possibility of supplying power bypassing the control circuit for triggering the solenoid, there is the possibility of false triggering of the solenoid by physical influences (vibration, magnetic fields), there is the possibility of making any manipulations with the lock up to penetrating into the case without tracking the owner of the castle).

The present invention is based on the task of improving the reliability of fixing the bolt in the lock body and the burglar resistance of the lock.

The technical result that manifests itself in solving the problem is expressed in increasing the reliability of the lock (by minimizing the number of interacting parts), eliminating the possibility of opening the lock during mechanical extraction of the door in the door frame, eliminating the possibility of false triggering of the bolt fixation device using physical influences (vibration, magnetic fields), the possibility of unauthorized production of manipulations with the lock is excluded, energy consumption is minimized, the possibility of zhnosti sawing open the door bolt.

The result is achieved in that the door lock, comprising a housing provided with a cavity configured for reciprocating movement of the bolt in it, and means for fixing the bolt in the locked position, differs in that the bolt is made in the form of a part separate from the housing, while if one of the mentioned elements is rigidly fixed on the movable element of the door, then the second is rigidly fixed on its fixed element, and the bolt is made in the form of a plate with a curly notch of variable width, which in the interaction section of the rig I with a locking element is made round, with a diameter larger than the width of the rectilinear section of the curved cut, starting from the end of the plate, while the locking bolt in the locked position is made in the form of a cylindrical shaft mounted to rotate in the lock case around an axis perpendicular to the surface of the bolt, the cross section of the shaft corresponds to the diameter of the rounded portion of the figured notch, and in the area of interaction with the crossbar, the shaft is provided with grooves, the distance between the bottoms of which is less than the width a straight section of a figured cut, and the width is not less than the thickness of the bolt, in addition, the shaft is equipped with a turning means. In addition, the means of rotation of the shaft is made in the form of a rotation drive, preferably controlled via a controller.

These features of the invention represent its differences from the prototype and determine the novelty of the proposal; these differences are significant, because they provide the achievement of the technical result reflected in the technical task, and are absent in the known technical solutions with the same effect.

A comparative analysis of the set of essential features of the proposed technical solution with the essential features of analogues and prototype indicates its compliance with the criterion of "novelty."

The features of the characterizing part of the claims solve the following functional tasks.

The signs "... the bolt is made in the form of a part separate from the case, while if one of the mentioned elements is rigidly fixed to the movable door element, the second is rigidly fixed to its fixed element" provide the ability to close-open the lock by horizontal movement of the bolt (or the lock case) across the end of the door, which, in turn, eliminates the possibility of opening the door by sawing the bolt, since the cross-sectional area of the bolt in the gap between the door and the jamb is significantly increased, in addition, this design The active solution provides the possibility of opening and closing the door due to the muscular strength of a person, which allows the rotation drive to be used only to bring the bolt fixation device into operation.

The signs "... the crossbar is made in the form of a plate with a curly cut of variable width, which is round in the section of the interaction between the crossbar and the locking element, with a diameter larger than the width of the straight section of the curved cut starting from the end of the plate" provide the possibility of fixing the crossbar by turning it in its round parts of the shaft, the width of which in mutually perpendicular directions is different, so that when the shaft is placed with the “narrow” side along the rectilinear section of the curved notch, the crossbar freely enters and you is worn from the lock case, and when the shaft is rotated by an amount multiple of an odd number of quarters of its full revolution, the “width” of the shaft in the direction of the bolt movement is greater than the width of the straight section of the figured cutout, which excludes the possibility of the bolt entering the lock case (if the door was open) or the crossbar is rigidly fixed in the lock case (if the door was closed).

Signs "... the means of fixing the bolt in the locked position is made in the form of a cylindrical shaft mounted with the possibility of rotation in the lock case about an axis perpendicular to the surface of the bolt, while the shaft section corresponds to the diameter of the rounded section of the figured notch, and the shaft is equipped with grooves, the distance between the bottoms of which is less than the width of the rectilinear section of the figured notch, and the width is not less than the thickness of the crossbar ”provides the ability to lock or release the crossbar Roth shaft.

The signs "... the shaft is equipped with a means of rotation" provide the possibility of turning the shaft in a position that provides opening-closing of the lock.

The signs of the second claim allow to increase the degree of secrecy of the lock when it is controlled through a controller equipped with means for entering an access code.

In Fig.1 shows a section of the castle in a plane parallel to the plane of the bolt, in the closed position; figure 2 is the same in the "open" position; figure 3 shows a view of the crossbar; figure 4 shows the assembly drawing of the castle body in a perspective view; figure 5 shows the position of the lock on the door.

The drawings show a lock case containing side plates 1 and 2, and spacer sleeves 3, which provide a bolt 5 with the possibility of reciprocating movement in it in the body cavity (gap 4 between plates 1 and 2). Also shown is a means of fixing the bolt 5 in the locked position, made in the form of a cylindrical shaft 6, mounted for rotation in the lock case about an axis perpendicular to the surface of the bolt 5. The cross section of the shaft 6 corresponds to the diameter of the rounded section 7 of the figured notch 8 of the bolt 5, and in the interaction area with the crossbar, the shaft 6 is provided with grooves 9, the distance between the bottoms of which is less than the width of the straight section 10 of the figured notch 8 of the crossbar 5, and the width is not less than the thickness of the crossbar, in addition, the shaft 6 is installed in the bushings 11 and equipped with a turning means, including an electric motor 12 with gear 13 on the shaft mounted in engagement with the gear wheel 14, fixed on the shaft of the worm 15, mounted in engagement with the worm wheel 16, fixed on the end of the shaft 6, protruding above the surface of the side plate 1.

The design of the shaft 6 is such that with a full revolution in any direction (360 °) there are two sectors (5 ° each) corresponding to the “open” position, located 180 ° apart, and two sectors corresponding to the “closed” position (90 ° each through 180 °). Positions “open” and “closed” are mutually perpendicular.

With unlimited door thickness, the means of rotation of the shaft can be performed differently than shown.

The electric motor 12 is fixed by a screw 17 in the frame 18, mounted on the outside of the side plate 1 with screws 19.

The worm 15 is passed through the hole 20 of the U-shaped bracket 21, while one end thereof is inserted into the sleeve 22 located in the hole 23 of the U-shaped bracket 21, and the second is passed through the sleeve 24 fixed in the hole 20 of the U-shaped bracket 21, moreover at the end of the worm 15, protruding from the named sleeve, a gear 14 is fixed, interacting with the gear 13, mounted on the shaft of the electric motor 12.

In turn, the U-shaped bracket 21 is fixed on the outside of the side plate 1 with screws 25.

The position of the shaft 6 is controlled intellectually based on feedback from one or more magnetic sensors of known design (not shown) through a controller (not shown). In this case, the control system includes the said sensors, the rocker 26, at the ends of which point magnets 27 are fixed (the rocker 26 is fixed in the slot 28 of the worm wheel 16, which coincides with a similar slot 28 made on the end of the shaft 6). The conclusions of the magnetic sensors are connected with the corresponding inputs of the controller, while one of the sensors is installed with the ability to determine the angle of rotation of the rocker arm 26 (and therefore the shaft 6), the second sensor is placed on the gearbox with the ability to control the angle of rotation. In addition, to prevent jamming of the shaft with a bolt, a mechanical stop is used, made in the form of a bolt 29, intersecting the gap 4 between the plates 1 and 2 and installed with the possibility of abutment to the bottom of the additional slot 30, coaxial with the rectilinear section 10 of the figured cutout 8. Additionally, to eliminate jamming the shaft with a bolt use a sensor (for example, a photo interrupter of a known design) connected to the controller, made in the form of a bolt 31 fixed in the bolt 5. The above-mentioned elements interfere with ka (turning the shaft 6) with an intermediate (not fully retracted) position of the crossbar. To ensure that the bolt enters the lock case, a trim bolt 32 is used.

In addition, door leaf 33 and door jamb 34 are shown.

As the controller, an electronic unit can be used, preferably a microcontroller (for example, Microchip 16 F 684), which functionally includes elements that provide solutions to the following problems:

- input and storage of non-volatile access code;

- Comparison of the access code available in the memory of the controller and entered;

- the formation of the control signal of the actuator (respectively, its opening or closing).

The named functions are implemented mainly by software. In addition to these functions directly related to ensuring the operation of the lock, the controller can provide a signal about an incorrectly dialed code and / or activate an alarm or perform another action provided for in the list of options selected when purchasing a lock.

The claimed device operates as follows.

A reading unit is mounted in the door leaf (or on the wall next to the door), the outputs of which are connected in a known manner to the controller of the door lock actuator (ensuring inaccessibility of communication channels from the outside of the door), in addition, a bolt is attached to the vertical end of the door leaf 33, so so that its curly slot was oriented towards the lock body, which is fixed, respectively, on the door jamb 34.

The procedure for opening and closing the door (respectively, the extension of the bolt from the lock case and its sliding into the lock case) is carried out by moving the door leaf due to the muscular strength of the user.

When the user closes the door, when the deadbolt fully enters the lock case, the photo interrupter is activated, as a result of which the signal from it goes to the controller and the controller puts the rotor in the closed position.

To open the lock, it is necessary that the controller receives an appropriate code signal from the outside, which is provided by the user by entering a code signal into the controller by means of a code key corresponding to the used controller design.

The procedure of "opening" or "closing" the lock is reduced to turning the shaft 6 to one of the positions ("open" or "closed") by an electric motor 12 through a gearbox (gear 13, gear 14, worm 15 and worm 16).

With the “open” and “closed” positions, the magnets located on the gearbox and on the beam are fixed opposite the sensors, so that in case of an unauthorized change in the position of the lock magnets, the lock controller provides an alarm or a police call.

When attempting a rough break by squeezing the door leaf 33 with a jack, the bolt 5 is deformed and jammed in the cavity of the lock case, because The “shores” 35 of the straight section 10 of the figured cutout 8 crawl (stretch) onto the shaft 6, bending up and down, respectively, and wedging into the sleeves 3, which makes this method of hacking ineffective.

The claimed device is characterized by the following advantages:

- the drive can be covertly installed on the door in such a way that its location cannot be determined from the outside;

- the ability to install on doors that open both “outward” and “inward”, including sliding, sliding or swinging doors;

- electrical compatibility with most existing third-party access control systems (step-by-step mode);

- The “end” installation on the door leaf or frame practically eliminates the possibility of drilling the mechanism, since it is visible “in profile”, the worm and the worm wheel being protected, and the rotor hidden by a crossbar, in addition, a “vertical” flat crossbar installed close to the frame , greatly complicates the possibility of sawing it. The crossbar has an equal thickness along the entire length, and not only where "visible";

- installation of the lock on the frame and the "lockable" bolt exclude the possibility of "pushing" the door leaf or pressing the bolt;

- the use of a motor (and not a solenoid or an electromagnet) and the absence of self-cocking excludes various methods of breaking the lock, based on the "provocation" of self-cocking;

- intelligent motor control using feedback from the sensors greatly complicates the opening of the lock by supplying power to the electric motor bypassing the controller, and also significantly reduces the mechanical wear of the drive and the noise level from its operation;

- low peak power consumption of the drive allows you to use the drive with inexpensive power supplies or batteries.

Claims (2)

1. A door lock comprising a housing provided with a cavity configured for reciprocating movement of a bolt in it, and means for fixing the bolt in the locked position, characterized in that the bolt is made in the form of a part separate from the housing, wherein, if one of of the said elements is rigidly fixed to the movable door element, the second is rigidly fixed to its fixed element, and the crossbar is made in the form of a plate with a curly cut of variable width, which is in the area of interaction between the crossbar and the locking element rounded flax, with a diameter greater than the width of the rectilinear section of the curly cut, starting from the end of the plate, while the bolt fixation tool in the locked position is made in the form of a cylindrical shaft mounted with the possibility of rotation in the lock case around an axis perpendicular to the bolt surface, with the shaft section corresponds to the diameter of the rounded section of the figured notch, and in the area of interaction with the crossbar, the shaft is provided with grooves, the distance between the bottoms of which is less than the width of the straight section The leg cutout and the width is not less than the thickness of pins, moreover, the shaft is provided with a pivot means. 2. The lock according to claim 1, characterized in that the means of rotation of the shaft is made in the form of a rotation drive, preferably controlled through a controller.

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