RU2446066C2 - Antitheft device for cars with automatic gearbox - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to devices locking axially displacing shafts, particularly, for antitheft devices fitted in cars with automatic gearbox. Device case features "П" shape with lugs for attachment to car body, split unit arranged on gearshift lever made up of rectangular papellelepiped fitted inside said "П"-like case and provided with screws arranged parallel with side walls of said case and heads arranged in unit part on the side of "П"-like case cross arm side. The surface of unit part parallel with sidewalls of aforesaid case has a recess to aligned with hole in said case wherein ball is fitted. Said plate is made up of round disk with truncated cone-shaped hole with base diameter sufficient to unlock antitheft device when ball gets into said taper hole. Said disk is rigidly fixed on extension rigidly secured on lock drum. Boss is made on drum lock, on the side of keyhole, to quickly define the state of lock device. Taper hole is aligned with that with ball in unlocked state of antitheft device.

EFFECT: higher reliability, reduced sizes, visual control.

6 dwg

Description

The invention relates to devices for mechanical locking of the shaft with axial movement.

A device (1) is known to be installed on many modern automobiles, comprising an eye fixed with a detachable block to the automatic transmission shift rod, a locking device comprising a lock interacting in a certain way with a pin fixed to it and a housing fixed to the car body, a lock with the pin can be moved, being spring loaded, inside the housing in the axial direction and locked in it without a key, while the pin enters the hole of the eye, blocking, in turn, the switching current of the automatic transmission in the "parking" position, the device is unlocked with a key, while the spring pushes the lock with the pin to its original position.

The disadvantages of this device are the unreliability of work due to the use of a spring and the ease of unlocking the pin and eye by spin after accessing them, as well as the complexity of the design.

A device (2) is known - a prototype having a shaft locking device containing a ball, a lock drum interacting with the ball, characterized in that the axis of the lock drum is parallel to the axis of the hole in which the ball is located, a plate is fixed on the drum, the plane of which is perpendicular to the axis of the drum and the hole in which the ball is located, the plate with a minimum clearance is located in the slot with a width of less than half the diameter of the ball, the hole where the ball is located has a free exit into the slot, the distance between the axes of the drum and the hole in which the ball is located is less than the distance from the axis of the drum to the edge of the plate, while on the shaft there is a recess coaxial with the hole where the ball is located in the extreme blocking position of the device, with a depth that allows the ball to fall into the recess of the plate, which is rigidly fixed to lock drum, move to a position above the hole where the ball is located.

The disadvantage of this device is the large diameter of the gap and, as a result, the large dimensions and the large force of rotation of the drum with a key, as well as the inability to quickly visually monitor the condition of the locking device.

Thus, the aim of the invention is to increase reliability, reduce the size and effort of rotation of the key and the ability to quickly visually monitor the status of the locking device.

This goal is achieved in that the body is made in a U-shape with tabs for attaching to the body at the free ends, the detachable unit is made in the form of a rectangular parallelepiped located inside the U-shaped body with screws parallel to the side walls of the U-shaped body, with heads located in the block part from the side of the crossbar of the U-shaped case, on the plane of this part of the block parallel to the side walls of the U-shaped case, a recess is made, compatible with the hole in the U-shaped case, in which holds the ball, and the plate is made in the form of a circular disk with a hole in the shape of a truncated cone with a base diameter facing the hole where the ball is located, sufficient to unlock the anti-theft device when the ball enters the conical hole, the disk is rigidly fixed to the extension cord, fixed without possibility rotation on the lock drum, on the lock drum from the keyhole side a tide is made for quick visual determination of the status of the lock device, while the conical hole coincides on the axis with the hole where the ball is located, in the unlocked position of the anti-theft device.

The proposed device will be clear from the drawings.

In Fig.1, Fig.3 and Fig.6 shows the position of the parts of the device in the unlocked state.

Figure 2, figure 4 and figure 5 shows the position of the parts of the device in a locked state.

A detachable block 3 is rigidly fixed on a blocking element in the form of a rod 1 with screws 2, in one part of which 4 there are recessed screw heads 2 and a recess 5 in it, a detachable block 3 is located inside a U-shaped case 6 with tabs 7 for fastening to the car body 8 by means of screws 9. A round plate 10 is welded to the body 6; at the same time, a hole 11 is made in the body 6 and plate 10 for a ball 12 interacting with a circular disk 13 placed in a slot 14 formed by rigidly fixed with screws 15 on face not 10 with a glass 16, inside which a lock 17 is fixed with a drum 18 interacting without the possibility of rotation with an extension cord 19, rigidly fixed to a disk 13 in which a hole 20 in the form of a truncated cone is made. On the drum 18 of the castle 17 from the keyhole side, a tide 21 is made for quick visual determination of the state of the castle device (“closed” or “open”). The glass 16 is mounted on the car body 8 using the sleeve 22 and screws 23.

The proposed device operates as follows.

In the state of the lock 17, the “drum” 18 is rotated so that the conical hole 20 is opposite the hole 11, and the ball 12, freely entering the conical hole 20, can not interfere with the detachable block 3 to move inside the U-shaped case 6 Does not interfere with the gearbox of the car

The automatic transmission of the car is blocked in the extreme position of its "parking". In this position, the detachable unit 3 is positioned so that the recess 5 and the hole 11 are aligned, and when the drum 18 of the lock 17 is rotated a quarter of a turn to the closed position, the ball 12 exits the conical hole 20 and moves to the recess 5 located in one of the parts 4 of the detachable block 3, blocking its movement by the plate 10. In this case, the tide 21 moves a quarter of a turn, and with visual inspection it is easy to see in which position the lock is, “open” or “closed”.

The sign "the body is made in a U-shape with paws for attaching to the body at the free ends" makes it easy to mount it on the car body, prevents hacking due to its closedness.

The sign “detachable block is made in the form of a rectangular parallelepiped located inside the U-shaped case, with screws parallel to the side walls of the U-shaped case, with heads placed in the block part from the side of the crossbar of the U-shaped case” excludes access to the fasteners of the detachable block and the sign "on the plane of this part of the block parallel to the side walls of the U-shaped case, a recess is made, compatible with the hole in the U-shaped case in which the ball is placed" indicates the placement of the recess in The best-place rigid structure that prevents access to the site of blockage that ultimately prevents cracking.

The sign "the plate is made in the form of a circular disk with a hole in the shape of a truncated cone with a base diameter facing the hole where the ball is located, sufficient to unlock the anti-theft device when the ball enters the conical hole" allows to minimize the distance between the axes of the lock drum and the hole, where a ball is located, which reduces the dimensions of the device and the effort on the key of the lock.

The sign “a tide is made on the lock drum from the keyhole side to quickly visually determine the state of the lock device” allows you to quickly determine whether the anti-theft device is in open or closed state.

Thus, the above signs can increase the reliability of the device, reduce its dimensions and the force of rotation of the key, as well as quickly determine the status of the locking device.

Information sources

1. Anti-theft devices DEFEND (www.defend.su).

2. RF patent No. 2169087, B60R 25/02.

Claims (1)

An anti-theft device for cars with an automatic transmission, comprising a detachable block with a recess, consisting of two parts covering a lockable element in the form of a rod or cable connected by screws, the heads of which are recessed in one of the parts of the unit, and a locking device consisting of a housing interacting with a detachable unit, and a locking device rigidly fixed to the housing, containing a lock with a drum with a plate fixed on it without the possibility of rotation, the plane of which is perpendicular to s of a drum located in a slot with a width of less than half the diameter of a ball located in an opening having free exits into the slot and a plane of the housing interacting with the plane of the detachable block on which the recess is made, the distance between the parallel axes of the drum and the hole in which the ball is located is less the distance from the axis of the drum to the edge of the plate, while the recess on one of the parts of the detachable block coincides with the axis of the hole in the locked position, and its depth allows it to hit the ball when turning the drum, move to the position opposite the hole, blocking the ball in it, while the body and the lock are rigidly fixed to the car body, characterized in that the body is made in a U-shape with paws for attaching to the body at the free ends, the detachable block is made in in the form of a rectangular parallelepiped located inside the U-shaped case with screws located parallel to the side walls of the U-shaped case, with heads placed in the block part from the side of the crossbar of the U-shaped case, on a plane On this part of the block parallel to the side walls of the U-shaped body, a recess is made that is compatible with the hole in the U-shaped body in which the ball is placed, and the plate is made in the form of a circular disk with a hole in the form of a truncated cone with a base diameter facing the hole , where the ball is located, sufficient to unlock the anti-theft device when the ball enters the conical hole, the disk is rigidly mounted on an extension cord fixed without the possibility of rotation on the lock drum, on the lock drum from the side s keyhole configured tide for quick visual determination of the status of the locking device, wherein the tapered hole coincides with the axis of the hole where the ball is located, in the unlocked position of the protective device.

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