RS51220B - CYLINDER LOCK WITH CODED KEY TO LOCK THE VEHICLE OF THE VEHICLE, AND PROTECT THE MOTOR VEHICLE FROM THEft - Google Patents

Abstract

A cylinder lock with a coded key for locking the steering wheel of a vehicle and protecting a motor vehicle, in which, inside the housing (1), which is secured to the sleeve (2) mounted on the shaft (3) of the control system, an axially sliding cylinder (4), where a groove (14) is provided in the cylinder (4) in which the tip of the mandrel (13) is fixed in the housing (1), and on the core (8) of the cylinder (4) is fixed a sleeve (15) on which the annular eccentric is located (17) with a surface (18), while a spiral spring (20) is mounted on the sleeve (15), where a thorn (19) is fixed in the housing (1) with an eccentric (17) and a spiral spring is mounted inside the sleeve (15). (24) and the plunger (25), wherein the tip of the plunger (25) is fixed in the plunger (26) for locking and where the free end of the plunger (26) is mounted in the groove (28) of the sleeve (2, 29), characterized in that an inductive switch (27) is attached in the body (1) to the mandrel (19), and below the eccentric (17) and immediately next to it.

Description

Technical field

The subject of the invention belongs, generally speaking, to the field of traffic and transport, that is, to the field of equipment for vehicles. The subject of the invention can also belong to the field of construction, that is, to the field of locks, keys, fittings and safes, and more closely to the field of locks and accessories. More specifically, the invention falls within the field of mechanical locks for preventing shafts or shafts from rotating, i.e. to be blocked, and more specifically, in the area of locks to prevent vehicle theft.

Technical problem

The technical problem to be solved by the present invention consists in the following: how to design a cylinder lock with a coded key that would absolutely safely block the vehicle's steering shaft and protect the motor vehicle from theft and in the event of destruction of the vehicle's steering wheel, which would be of simple construction, easily, safely and quickly unlocked/locked, absolutely safe from tampering and with an unlimited number of possible "encryption" combinations.

State of the art

There are numerous lock solutions shown in the patent and non-patent literature. The word lock should mean, in addition to common door locks of various types, vehicle steering wheel locks as well as all types of special locks such as padlocks and others. Conceptually, there are several groups of locks that differ from each other in the way they are locked/unlocked. Thus, there are locks with rotary keys that move the lamellar retainers perpendicular to the key, locks whose retainers are adjusted by inserting a key, cylinder locks where the bolt is actuated by means other than the key, locks with permutations, locks with indicating devices or time counters, locks for special purposes, etc. The most common are the lock cylinder with spike or ball retainers and the lock cylinder with lamellar retainers.

Thus, one well-known lock solution is from YU patent application P-731/92 called "Cylinder lock with key". In this solution, the cylinder is profiled as a half-cylinder and contains a cylinder housing that, on its upper, essentially circular cylindrical part, contains a longitudinally extended core opening for mounting the cylinder core. The cylinder core carries a locking element at its inwardly located end. The rotation of the cylinder core is thus transmitted to the lock elements. The lock element remains axially stationary in the cutout in the cylinder housing. The flange portion of the cylinder housing extends radially to the circular cylindrical portion. Casing bores arranged in series and extending radially to the cylinder core are provided in the flange section. Their ends away from the cylinder core are sealed with pins. These housing holes are used to receive the pin springs and the pins themselves. The core bores, which are oriented radially in relation to the cylinder core for receiving the pins, are aligned with the housing bores. The housing wedges and the core wedges form a stop that prevents the rotation of the cylinder core and thus the lock elements when the key is not inserted. The core pins are moved only by inserting a suitable key into the channel in the cylinder core so that the special joint between the core pins and the housing pins are located at the level of the cylinder core sliding joint.

Another well-known solution is shown in Patent Document YU PS 45139 entitled "Cylindrical lock with double cylinder locking". This solution refers to a cylinder lock with double locking of the cylinder in which the cylinder is locked on two sides, with different systems of pins and lifters using a profiled key, so that on the lower side of the cylinder, a standard system of locking pins and lifters is used, under the action of springs, and on the upper side, a system of locking pins and lifters located in the upper part of the vertical plane, which passes through the axis of the cylinder, and is movable under the influence of the earth's gravity. In addition, there are grooves in the middle of the cylinder into which tiles are inserted, which serves to prevent the upper system from being unlocked by foreign objects.

Some more of the relevant known solutions are shown in the Patent Files: YU Patent Application P-500/98 which shows a programmed cylinder lock with master keys, YU Patent Application P-1812/80 which shows a profile cylinder lock, YU Patent Application P-678/92 which shows a vehicle steering lock, YU Patent Application P-1812/80 which shows a profile cylinder lock, YU Patent Application P-678/92 showing a vehicle steering lock, YU patent application P-1487/86 showing an interlocking safety lock for motor vehicles, etc.

The main disadvantages of known locks, and some of them are listed above, are the complexity of the construction, the possibility of breaking, a small number of encryption combinations, and they are limited on purpose.

Exposition of the essence of the invention

The invention relates to a cylinder lock with a coded key for blocking the vehicle's steering shaft and an inductive switch to prevent unwanted starting of the vehicle's engine. According to the patent applications of the same applicant number P-565/03 and P-230/04, a cylinder lock with a coded key is known, which consists of a cylinder consisting of an outer protective covering inside which the casing is placed and coaxially with it, a rotating cylindrical core in which the central opening is axially made. In the axis of the mentioned opening, a mandrel is placed to guide the key. There are radial bores in the casing body, while other bores are coaxially drilled in the core. Springs, plates and stoppers are located inside the housing bores, while retainers are slidably placed in the core bores. Retainers are made in the form of wedges or pairs of balls. Mentioned mandrel, whose free end extends to the very entrance of the cylinder, and whose other (left) end is fixed in a sleeve extension for unlocking placed in the core. The core, sleeve and mandrel are interconnected with a screw that is screwed radially into the cantilever part of the core. The front side of the cylinder, i.e. the key entry side, is closed with a safety plate. The key consists of a handle and a body with openings for the entry of the tips of the retainer, whereby the top of the key body is made with a profiled bevel that corresponds to the profile of the bit. The so-called The "encryption" of the lock can be done at the same time by the number of retainers, by placing the retainers on the cylinder, both radially and axially along the circumference of the case, by changing the depth of the entry of the retainers into the openings of the body and by changing the length of the extension. What represents the novelty of the solution is that inside the housing, which is fixed on the lining placed on the shaft of the steering system, a sliding cylinder with a coded key is placed. The cylinder has a groove in which the tip of the mandrel fixed in the housing is placed. A bushing is fixed on the cylinder core, on which there is an eccentric with a beveled surface, while a spiral spring is placed on the bushing. Inside the sleeve are placed a spiral spring and a piston, the tip of which is fixed in the locking piston. The free end of the mentioned piston is placed in the groove of the sleeve fixed on the shaft. The locking mechanism's cylindrical housing is secured to a right-angle bushing firmly mounted on the steering system shaft, the bushing being secured to a mounting plate on the chassis.

Namely, at the left end inside the housing, a cylinder with a coded key is slidably placed, whereby the cylinder consists of an outer protective covering inside which the stator is placed, while the core is placed inside the stator and rotating in it. The lining and the stator are mutually fixed with a mandrel, while the front side of the cylinder is closed with a safety ring. The cylinder has a groove in which the tip of the mandrel is placed, while the other end of the mandrel is fixed in the housing. A sleeve is placed on the free end of the cylinder core that protrudes from the stator, and the core and the sleeve are connected to each other by a radially placed pin. On the outer side of the sleeve, there is a ring eccentric for locking, on which a hemmed surface is made. A spiral spring is placed on the bushing, where the left end of the spring rests on the crown, while the right end is placed in the groove made in the ring. In the housing, a mandrel is attached to the sleeve with the aforementioned eccentric. Also, under that eccentric and next to the mandrel, which makes the novelty of this invention, an inductive switch is placed that is activated by the eccentric. In the inner space of the sleeve, which is limited on the left side by the front of the core and on the right side by the wall in which the opening is made, a spiral spring and a piston are placed. The top of the piston, which passes through the opening made in the wall and is located outside the sleeve, is placed axially inside the hole made in the locking piston, whereby the top of the piston and the locking piston are connected to each other by a radially placed pin. The free end of the locking piston, which passes through the holes made in the bushings, is placed in a groove made axially in the bushing, which is fixed on the shaft via one or two radially placed pins.

The aim of the invention is to make it possible to produce a cylinder lock that is safe when blocking the vehicle's steering shaft and that a) to protect the motor vehicle from theft and in cases where the vehicle's steering wheel is destroyed and b) by having an inductive switch connected to the ignition relay, it additionally prevents the engine from starting. The lock would be of simple construction and absolutely safe from any kind of pick-off.

The invention - a cylinder lock with a coded key for blocking the vehicle's steering shaft and protecting the motor vehicle from theft - according to this patent application, has several advantages, some of which are the most urgent, namely: • safe blocking of the vehicle's steering shaft and protection of the motor vehicle from theft and in cases of destruction of the vehicle's steering wheel,

• allows starting the engine only after unlocking the lock and removing the key,

• simple construction,

• the construction and choice of top quality material do not allow the "code" to be revealed.

• an unlimited number of "encryption" combinations,

• practical and absolute impossibility of combing or "combing",

• easy installation and maintenance,

• practically unlimited shelf life,

• functionally extremely practical and reliable, safe in operation,

• can be serially produced and

• geometrically, it is ideally shaped and has small contour dimensions.

Brief description of the draft images

For the sake of easier understanding of the invention, as well as for showing how it can be realized in practice, the applicant refers to the attached drawing which, in addition to the inductive switch, also shows the state of the art in which: • Figure 1 shows a cylinder lock with a coded key for blocking the shaft of the vehicle driver and protection of the motor vehicle from theft, according to the invention, in

general appearance, partial section and in axonometry,

• Figure 2 shows the cylinder lock from Figure 1 in the locking phase, in a vertical position

cross-section and axonometry,

• Figure 3 shows the lock from Figure 2 in the unlocked state and with the key removed, u

vertical section and in axonometry,

• Figure 4 shows the lock from Figure 3 in the locking phase, in a vertical section and • Figure 5 shows the lock from Figure 3 in the locked state, in a vertical section and in

axonometry.

Detailed description of the invention

What is necessary to note, and before the detailed description of the cylinder lock for blocking the vehicle's steering shaft, is that the solution according to the invention is shown only as one of a number of possible combinations of execution and therefore should be viewed only as one example.

The cylinder lock with a coded key for blocking the steering shaft of the vehicle and protecting the motor vehicle from theft, according to the invention and Figures 1 to 5, consists of a housing 1, inside which the locking mechanism is located, and a bushing 2 that secures the lock to the shaft 3 of the steering system. The housing 1 is placed and fixed on the sleeve 2 at a right angle. A plate 31, Figure 1, is fixed on the bushing 2, with which the cylinder lock according to the invention is fixed on the vehicle chassis.

Inside the cylindrical housing 1, at its left end, a cylinder 4 with a coded key 5 is slidably placed. The cylinder 4 consists of an outer protective cover 6 in which the appropriate subassemblies and elements of the cylinder are placed - "packaged". Inside the lining 6, the casing - stator 7 is firmly placed, while inside the stator 7, coaxial with it and rotating in it, a cylindrical rotor-core 8 is placed. The lining 6 and the stator 7 are mutually fixed with a mandrel 9. The front side of the cylinder 4, i.e. the side of the entry of the key 5, is closed with a safety ring 10, which is best welded to the lining 6. In this way, it is impossible "ripping" the cylinder mechanism from the lining, so the ring 10 also represents a safety element against breaking the lock.

The cylinder 4 with the lining 6, Figures 1 and 2, is axially slidably placed in the housing 1 and is guided by the mandrel 13 for guidance. One end of this mandrel 13 is fixed in the housing 1, while the other free end is placed in a groove 14 formed by a slot made in the lining 6 and a groove made in the stator 7. A bushing 15 is placed on the free end of the core 8, which comes out of the stator 7, axially with the core 8. The free end of the core 8 and the bushing 15 are connected to each other by a radially placed pin 16. From the outside on the sleeve 15 there is an annular eccentric 17 for locking, which is made with a hemmed surface 18. Along the side surface of the eccentric 17 and in the housing 1, a mandrel 19 is fixed on which the eccentric 17 rests in the unlocked or locked position. Also, on the left side of the mandrel 19 on the housing 1, an inductive switch 27 is fixed. On the sleeve 15 and its right end, a spiral spring 20 is placed for axial return - "ejection" of the cylinder 4 during unlocking. The left end of the spring 20 rests on the eccentric 17, while the right end of the spring is placed in the groove 21 made in the ring 22.

In the inner space of the sleeve 15, which is limited on the left side by the face of the core 8 and on the right side by the wall 23 in which the opening is made, a spiral spring 24 and a piston 25 are placed. The top of the piston 25, which passes through the opening made in the wall 23 and is located outside the sleeve 15, is placed axially inside the hole made in the piston 26 for locking. The top of the piston 25 and the piston 26 are connected to each other by a radially placed pin. The free end of the piston 26 passes through the opening made in the sleeve 22 and enters the groove 28 made axially in the sleeves 2 and 29. The sleeve 29, located on the shaft 3 inside the cylindrical protective covering 30, serves in certain types of vehicles to bridge the difference between the diameter of the standard sleeve 2 and the reduced diameter of the shaft 3 for driving the vehicle, so it is shown here only as an example of execution. The bushing 29 is secured against axial movement along the shaft 3 at the appropriate place on the shaft 3, preferably by gluing.

The cylinder 4 itself, according to the patent application in SCG number P-565/03 from the same applicant, will not be described in detail here because it is not the subject of the invention. However, it should be emphasized that in the body of the stator 7, there are several openings or holes whose axes are placed radially. In this case, the axes of all the holes are placed normally in relation to the axial axis and in a row along the stator 7. The holes are placed in a certain number of rows and several holes, and their axes do not have to be in the same axial plane. The holes in the stator 7, which have a larger diameter and a greater radial depth, immediately before the core 8 transition into holes of a smaller diameter and a smaller radial depth, so that a support in the form of a ring is realized in the lower part of the hole. Springs can be placed inside the holes, which are supported on the tiles on the outside, and on the inside, they are supported on the outer surface of the upper part of the body of the stop plugs. Stop plugs are made in the shape of the letter T in the cross-section. The plates are on the opposite side of the springs supported on the lining 6. The plugs are located radially slidingly in the bore with the upper part of the larger diameter body, while the lower part of the smaller diameter body is placed in the bore of smaller diameter. With their lower part of the body - wedges, the locking plugs pass through a hole of smaller diameter, exit the stator 7 and enter the holes made in the core 8. The plugs rest with their surfaces on the lower part of the body and coaxially rest on the retainers which are made either in the form of a wedge, or in the form of pairs of balls or combined. The retainers are all slidably placed inside the holes made in the core 8. As the retainers in the form of wedges, i.e. balls are placed in the holes made in the core 8, it is obvious that the holes are placed coaxially with each other. The wedges can be/are of different lengths, which makes it possible to additionally "encrypt" the lock.

As previously mentioned, apart from the possibility that the layout of the previously mentioned holes, according to the circumference of the cylinder 4 in the axial and radial direction, as well as their total number, can be varied within wide limits, it is also possible to vary and combine the layout and number of holes with pins or balls. In this way, a greater number of combinations for encryption is achieved, the function of the lock is facilitated and any unauthorized opening is additionally prevented, thus creating a cylinder lock that is practically and absolutely protected against picking or "combing".

The free tips of the pins, i.e. the internal balls, which pass through the holes and exit into the opening are freely supported on the mandrel 11, Figure 3, which is placed in the central axis inside the opening 12 of the core 8. Since the contact lines of the plugs with the pins, that is, the contact points of the plugs with the balls, are radially displaced relative to the connection line of the stator 7 and the core 6, the lock is in a locked state. Thorn 11, as it is clearly shown in Figure 3, with its left free end extends to the very entrance to cylinder 1 and is used both for guiding the body 5' of the key 5 and for blocking the entrance from pulling in the "burner" of the lock when trying to pick it.

The mandrel 11 is fixed with its other (right) end in the unlocking sleeve, whereby the sleeve is fixed on the core 8 inside the opening 12. The core 8, the unlocking sleeve and the mandrel 11 are firmly connected to each other with a screw that is screwed radially into the cantilever part of the core 8. The screw passes through the sleeve and enters the groove made in the mandrel 11 with its tip. way the screw fixes the mandrel 11 in that position.

The key 5 for cylinder 4 is of a specific construction, Figure 2. The key consists of a handle and a body 5'. The body is cylindrical with a thin wall in which there are radial openings for the entry of the tips of the previously mentioned wedges, i.e. balls. The axes of the openings on the key coincide with the arrangement of the eight holes in cylinder 4, that is, with the eight pins, that is, the balls. The top 5" of the body 5' of the key 5 is made with a profiled bevel that is adapted for a firm grip with the bevel of the same profile made on the front side of the unlocking sleeve.

The method of functioning of the cylinder lock, according to the invention, is simple and follows in an obvious way from the previous description and drawing, so it is not necessary to describe it in detail. The cylinder lock is, as clearly shown in Figure 3, in an unlocked state. In order to bring it to this state, the body 5' of the key 5 is inserted into the opening 12 of the core 8 and the key is guided along the mandrel 11. Due to the small gap between the core 8 and the mandrel 11, the body 5' is centered and guided to the sleeve for unlocking. The thickness of the wall of the key is slightly smaller than the gap, ie. of the channels that form the core 8 and the mandrel 11 in the opening 12 so that the body 5' of the key is "finely" and smoothly guided along the opening 12 and the mandrel 11. Entering the opening 12, the tip 5" of the key 5 encounters the top of the first pin, i.e. the ball, lifts them, overcoming the resistance of the spring, freeing the way for the tip to the next pin, i.e. the ball and so on. While the key slides along The tips of the pins 11, i.e. the ball slide on the outer surface of the body 5'. After the insertion, the key rests with the tip 5" on the front side of the unlocking sleeve and with the profiled bevel enters the grip with the same profiled bevel made on the sleeve. In this position, all the pins rest with their tips on the body of the 5' key. By further turning the key 5 by a relatively small radius, the axis of each of the openings on the body 5' coincides with eight corresponding pins, i.e. balls. At that moment, all the pins, i.e. the balls, are simultaneously inserted into the holes on the body 5' of the key through the locking plugs that are under the action of the springs. By entering the tips of the wedges, i.e. the balls, and projecting them into the corresponding openings on the body of the key to a certain depth, the lines-points of contact of the plugs with the retainers and the line of connection of the stator 7 and the core 8 are placed in the same plane, which brings the lock to the unlocked state. In this way, the core 8 is released and becomes rotatable inside the stator 7. By further turning the key 5 and the action of the profiled tip 5" on the profiled sleeve, the core 8 turns, and the sleeve 15 with which the core is connected via the pin 16 turns with it.

In the unlocked state, Figure 3, the cylinder 4 is in the "extended" position, i.e. the extreme left position under the action of the spring 20 and secured in that position by the eccentric 17, which rests on the left side of the mandrel 19. As the top of the core 8 and the sleeve 15 are connected via the pin 16, the sleeve 15 is also in the extreme left position. Pulling the sleeve 15 also causes the pull of the piston 25, by resting the wall 23 on the mushroom of the piston 25, and the piston 26 over the pin that connects them. In this way, the top of the piston 26 is in the extreme left position and is pulled out of the groove 28 made in the sleeve 29, so the cylinder lock is unlocked and the shaft 3 is free to rotate. In this way, the inductive switch 27 is excited and turned on by the action of the eccentric 17, which causes current to flow to the auxiliary relay for ignition, which enables starting the anlaser and starting the engine.

In order to lock the lock, Figure 5, it is necessary to perform the locking action as shown in Figure 4. By turning the key 5, which is on the mandrel 11 and the profiled tip 5" rests on the sleeve at the bottom of the opening 12, the core 8 turns and the sleeve 15 turns with the core 8, since they are interconnected with the pin 16. By turning the sleeve 15, it turns and the eccentric 17 sliding along the side surface of the mandrel 19. At the moment when the eccentric 17 with its hemmed surface 18 meets the top of the mandrel 19, the bushing 15 is released axially and "passes" over the top of the mandrel 19. By further pushing the cylinder 4 axially to the right, the entire cylinder 4 slides to the right inside the housing 1. This movement takes place for the length of the groove 14 in who is led by thorn 13, so the mandrel is brought from the extreme right position to the extreme left position in relation to the groove 14. The eccentric 17 "jumps" tm 19, moves to the right side, while the return spring-20 is compressed. The piston 25, under the action of the internal spring 24, pushes the piston 26, the top of which enters the groove 28 of the sleeves 2 and 29. By further turning the key 5, i.e. the core 8, the eccentric 17 rests on the side surface of the mandrel 19 on the right side and is placed in the position of securing the entire mechanism and locking shown in Figure 5. In this way, the eccentric 17 moves away from the inductive switch. 27 on which it can no longer act and thus the engine is additionally secured against possible ignition before the lock is completely unlocked. The key is then turned back 90° and removed leaving the lock locked. Unlocking the lock is done in the same way as before described.

The design features of the lock and the previously listed possibilities of achieving "encryption" allow an incredibly large number of combinations and make it absolutely impossible to discover the "code". Also, the constructive characteristics of the lock, which include: a narrow channel between the opening 12 and the pin 11, the location of the locking bushing at the bottom of the opening 12 and its inaccessibility, the high quality of the material of the parts, especially the safety ring 10, the precision of production, and the impossibility of "combing" it due to the huge number of combinations, make the lock practically and absolutely safe from being picked. A special place where the lock is installed, ie. on the shaft 3 steering systems additionally and absolutely make it impossible to steer the vehicle at the cost of breaking and tearing the steering wheel from the shaft on which it is located along with some of the protection systems of the "claw", "paw" or lever type.

The materials used to make this lock are highly alloyed steels that have special properties of mechanical strength and resistance to any kind of destruction and breaking, and when talking about this lock it is clear that it is a locking device of a higher level of security.

As for the purpose, the lock is universal because it is not limited by materials or dimensions.

Method of industrial or other application of the invention

The method of application of the invention follows in an obvious way from the previous text, i.e. for the commercial use of the reported invention, no special knowledge, instructions or experience are required to successfully apply the invention. Only the knowledge in the subject area possessed by an average expert is necessary and sufficient for the successful application of the subject invention based on the given description. All structural and functional features of the invention were successfully checked by the inventor on the prototype.

Also, any technological improvements or changes in the construction that would be within the scope of the presented and that would be aimed at its improvement, are considered to be covered by this application.

Claims (1)

1. Cylinder lock with a coded key for blocking the steering shaft of the vehicle and protecting the motor vehicle, where inside the housing (1), which is fixed on the sleeve (2) mounted on the shaft (3) of the steering system, a cylinder (4) is slid axially, where a groove (14) is made in the cylinder (4) in which the tip of the mandrel (13) is fixed in the housing (1), and on the core (8) of the cylinder (4). a sleeve (15) on which there is an annular eccentric (17) with a surface (18) is fixed, while a spiral spring (20) is placed on the sleeve (15), where a tm (19) is fixed in the housing (1) next to the eccentric (17), and a spiral spring (24) and a piston (25) are placed inside the sleeve (15), where the top of the piston (25) is fixed in the piston (26) for locking and where the free end of the piston is (26) placed in the groove (28) of the bushing (2, 29), marked t i m e, which is in the body (1) next to the tm (19), and under the eccentric (17) and immediately next to it, an inductive switch (27) is attached.