RU2549048C1 - Lock mechanism - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: lock mechanism is equipped with a key for its unlocking and comprises a body, a drum and a grip. The body and the drum are equipped with pins, located coaxially along the circumference along the axis to form the mechanism itself. The drum is installed into the body as capable of rotation around its axis. The grip is rigidly installed in the body. Cuts or ledges for a blocked part are made in the grip and the drum. Each pin comprises at least three parts. The last part of pins is made as composite - from a stepped shaft and a cylinder, which comprises the stepped shaft. Length of part of the stepped shaft entering the cylinder is less than the latter. The last part of pins is equipped with springs of different stiffness, or not all parts are spring-loaded. Coaxial holes are made in the body and the drum of the lock - in the body of larger length than in the drum. Additional pins are installed into holes of the body, interacting with the drum during vibration. Length of additional pins is equal to length of holes made in the body.

EFFECT: increased reliability of operation of a lock mechanism.

12 dwg

Description

The invention relates to locking mechanisms and can be used in vehicles as a shaft stopper in an anti-theft device and as a lock for protecting premises.

Known shaft stopper with a locking mechanism to the patent of the Russian Federation №2324610 (publ. 05/20/2008). The shaft stop is equipped with a key for unlocking the secret mechanism and consists of a housing, a drum and a gripper. The housing and the drum are provided with pins located coaxially around the circumference along the axis with the formation of the locking mechanism. The drum is mounted in the housing with the possibility of rotation around its axis. The grip is rigidly mounted in the housing. In the grip and in the drum cutouts are made under the lockable shaft. A central cylindrical hole is made in the drum, into which a spring-loaded step piston is installed, which interacts with the pins of the end and cylindrical parts. Each pin consists of at least three parts. One part is a stepped one interacting with a key, the other is a composite of a cylinder and a rod with the possibility of a fixed change in length, and the last is a cylindrical one interacting with a piston. The last part of the pins is made stepwise, except for one pin, which is made cylindrical. The stepped pins are mounted with a smaller diameter in the drum and a larger one in the housing. In this case, a part of the stepped pin with a smaller diameter of the pins is located both in the housing and in the drum.

To open such a lock with master keys, as certification has shown, is extremely difficult or almost impossible. In most cases, the locking mechanism is jammed, and with a rough effect on the pins, it leads to complete blockage.

The disadvantage of this design is the high complexity of manufacturing, namely the high accuracy of manufacturing parts of the locking mechanism, in particular the piston and the interacting rear step pins, and the drum. If these conditions are not met, as operating practice has shown, jamming of the locking mechanism or its complete blocking is possible. It is impossible to remove the secret mechanism from the wedge. The installation of such a stopper on a car in the form of an anti-theft device leads to extremely undesirable consequences and inconvenience, since unlocking the lock mechanism is possible only by cutting it.

The closest in technical content is the lock to the patent of the Russian Federation No. 2393100 (published on June 27, 2010). The lock is equipped with a key for unlocking this mechanism and consists of a housing, a drum and a grip. The housing and the drum are equipped with pins located coaxially along the circumference along the axis with the formation of a secret mechanism, the drum being mounted in the housing rotatably around its axis, the grip is rigidly mounted in the housing, cutouts for the lockable shaft are made in the grip and in the drum, each pin does not consist less than three parts: one part is stepped, interacting with a key, the other is a composite of a cylinder and a rod with the possibility of a fixed change in length to configure the code for the lock key, the third is spring-loaded. The threads are cut in the holes of the lock case and in the holes of the drum, the threads for interacting with the threaded surfaces in the holes of the case and drum are also made on the middle and rear pins, and the diameter of the threads of the holes made in the lock case and in the drum is larger than the diameters of the threads made on medium and rear pins.

This design of the lock mechanism is the most resistant to criminal tampering and the most efficient in comparison with the above counterpart. This is due to the presence of threaded holes in the housing and in the drum, which, interacting with the threaded surfaces of the middle and rear pins, block the latter when the lock is unauthorized.

The disadvantages of this castle mechanism is the possibility of opening it with vibration. This is because the rear pins, with this effect, begin to fly synchronously to the side of the drum, and the middle pins - toward the body. At a certain frequency and time of exposure to the locking mechanism, all the rear pins simultaneously move towards the drum and are not in the body of the body, which, in addition to vibration, is affected by torque. The lock mechanism is opened.

The present invention solves the problem of increasing the security properties of the lock mechanism and its reliable operation, namely, effective resistance to bumping: the impact on the pins of the lock mechanism by shock, shock and vibration, during which the pins of the lock mechanism are separated and unlocked.

To achieve this technical result, in the locking mechanism provided with a key for unlocking it and consisting of a housing, a drum and a grip, the housing and the drum are provided with pins located coaxially along the circumference along the axis with the formation of the mechanism itself, and the drum is mounted in the housing with the possibility of rotation around its axis, the grip is rigidly mounted in the housing, in the grip and in the drum cutouts or protrusions are made for the part to be blocked, each pin consists of at least three parts, the last part of the pins is made up d: from a stepped shaft and a cylinder into which a stepped shaft enters, and the length of the stepped shaft part included in the cylinder is less than the last, this last part of the pins is provided with springs of different stiffness or not all parts are spring loaded, and coaxial holes are made in the case and in the lock drum, moreover, in the case is longer than in the drum, and additional pins are installed in these holes in the case, which interact with the drum during vibration, while the length of the additional pins is equal to the length of the holes made in the case.

Distinctive features of the proposed locking mechanism is that the last part of the pins is made up of: a stepped shaft and a cylinder that includes a stepped shaft, and the length of the part of the stepped shaft included in the cylinder is less than the last, this last part of the pins is equipped with springs of different stiffness or spring loaded not all parts, but coaxial holes are made in the case and in the lock drum, moreover in the case than in the drum, and additional pins are installed in these holes in the case, vuyuschie drum vibration, wherein the length equal to the length of additional pins formed in the housing apertures.

This design of the locking mechanism allows you to reliably withstand vibrational influences on it - bumping.

Consider this in more detail:

1. During vibration or periodic force action on the case of the locking mechanism, the pulse is transmitted to the front of the pins, which, in turn, transmit this effect to the middle part, and the middle to the last. In the proposed design, the last part of the pins is composite: from a stepped shaft and a cylinder, and the length of the part of the stepped shaft included in the cylinder is less than the last.

When an impulse is received from the front of the pin, the middle part transfers it to the cylinder, and the cylinder - to the end part of the stepped shaft of a larger diameter. With this action, the stepped shaft moves towards the drum, and the cylinder remains in contact with the middle part of the pin. Thus, on the whole, the composite last pin is always in contact with the middle pin. There is no separation. The stepped shaft of the last part of the pin moves periodically, which, according to Newton’s third law, acting on the cylinder, presses it to the end of the middle part.

2. The pin, which is installed in additional coaxial holes made in the housing and in the drum, also moves toward the drum with an impulse received from the housing, and since the length of the pin is equal to the length of the hole made in the housing, the pin simultaneously with such actions located in the housing and in the drum, blocking the locking mechanism. The length of the hole made in the drum is less than the length of the pin, so it will always block the mechanism when exposed to vibration.

3. Not all pins are spring-loaded, but if all, then they have springs of different stiffness. This eliminates the synchronism of pulses when exposed to the locking mechanism, and hence the simultaneous separation of the latter.

4. The working position of the locking mechanism - pins down.

5. When the lock mechanism is opened with a key, the above-described effect does not occur, since all the pins move uniformly along the axis of their holes, and the additional pin, under the action of gravity, is completely in the hole in the housing, since its length and the length of the hole made for it are equal.

The proposed locking mechanism is illustrated by the drawings shown in FIG. 1-12.

In FIG. 1 shows a front view;

in FIG. 2 is a General view in section AA;

in FIG. 3 - key in isometry;

in FIG. 4 is an isometric view;

in FIG. 5 - front view, rotated;

in FIG. 6 is a General view in section BB;

in FIG. 7 is an isometric view of the BB section;

in FIG. 8 - front view, rotated;

in FIG. 9 is a General view in section BB;

in FIG. 10 is an isometric view of section B-B;

in FIG. 11 is a side view (installed in the prefabricated base);

in FIG. 12 is a side view (unlocked and removed from the precast base).

The locking mechanism consists of a housing 1, a housing cover 2, a button 3, a key 4, a drum 5, a gripper 6, a crown 7, a turnkey seat 8, a push rod 9, a spring push rod 10, front pins 11, middle adjustable pins 12, the last parts of the composite pins of the cylinder 13 and the stepped shaft 14, the springs of this part of the pins 15, an additional monitoring pin 16.

The locking mechanism works as follows: when installing the key 4 in the hole in the cover of the housing 2, made for him, FIG. 2, the key 4 with its cutout (Fig. 3) enters the saddle 8 and sits on it. Then it is fed into the body of the housing 2 with the button 3 until it stops at the end of the housing 2. As a result of this movement, the key 4 interacts with its recesses with the end part of the front pins 11, moving the latter by certain code distances. The front part of the pins 11 moves the middle adjustable parts of the pins 12, and those respectively shift the last component parts of the pins 13 — the cylinder, which interacts with the stepped pin 14. As a result of these movements, when the key 4 is fully entered, a code is entered, the middle part of the pins 12 and the last part 13-14 are installed in the plane of contact between the housing and the drum - the locking mechanism is unlocked. After that, the housing 1, rigidly connected with the cover of the housing 2 and with the gripper 6, can rotate around its axis, relative to the drum 5.

In this state, the locking mechanism can be removed from the precast base in which it was installed. This is a special case of the use of the locking mechanism 17, in this example, an anti-theft device consisting of a prefabricated base - two coupling halves 18 and 19, covering the steering shaft 20 and rigidly fixed to it.

Claims (1)

The locking mechanism, equipped with a key for unlocking it and consisting of a housing, a drum and a grip, the housing and the drum are provided with pins located coaxially around the circumference along the axis to form the mechanism itself, the drum being mounted in the housing with the possibility of rotation around its axis, the grip is rigidly mounted in cutouts or protrusions are made in the housing, in the grip and in the drum under the blocking part, each pin consists of at least three parts, characterized in that the last part of the pins is made integral - of a stepped shaft and the cylinder into which the stepped shaft enters, and the length of the stepped shaft part included in the cylinder is less than the last, this last part of the pins is equipped with springs of different stiffness or not all parts are spring loaded, and coaxial holes are made in the case and in the lock drum, moreover in the case lengths than in the drum, and additional pins are installed in these holes in the housing, interacting with the drum during vibration, while the length of the additional pins is equal to the length of the holes made in the housing.

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