JPS5846923Y2 - Anti-theft device for machines with diesel or similar engines - Google Patents

Description

[Detailed description of the invention] This invention is applied to a vehicle such as a diesel engine that has an internal combustion engine that is supplied with fuel by an injection pump. and a complete association between the key and the pump.

In order to understand the problem, safety issues must also be known.

In fact, it is imperative to avoid critical parts of the vehicle, such as steering, power transmission, braking, etc., becoming locked during one drive of the vehicle with the engine running.

This problem is easily solved in engines with electric ignition.

In this case, it is sufficient to provide the anti-theft device with a device that automatically interrupts the ignition circuit and operates it before important parts of the vehicle are locked.

It is well known to experts that it is difficult to design an anti-theft device that guarantees safety in the case of diesel engines, since there is no ignition circuit and the engine relies on an independent mechanical action on the injection pump. This is because the engine is started and stopped.

Many solutions have been proposed in which this mechanical action is associated with the anti-theft device, in which electromagnetic action devices, servo motors, etc. are connected to the anti-theft device through complex mechanisms.

The purpose of this invention is to provide an absolutely safe solution that does not require electrical circuits, relays, servo motors, etc., so as to simplify the previously described method.

The anti-theft device of this invention is actuated directly by the key of the anti-theft device and has a device for mechanically controlling the opening and closing of the injection pump by simply rotating the key from the ``stop'' to the ``run'' position. ing.

The injection pump is opened after the withdrawal of the bolt or lock bolt, and the bolt is unlocked before the injection pump is opened.

When the key is returned from the operating position to the stop position, the engine is shut off before the controls or other critical parts are locked.

If necessary, the mechanism is provided with a return device (bar or similar device).

No extra operations are required compared to the operation of anti-theft devices commonly used in fuel oil vehicles.

In order that the fuel pump can be opened automatically by rotation of the key, in the device according to the invention a mechanical connection is provided both between the key of the anti-theft device and the locking bolt and the injection pump.

Reference will now be made to the accompanying drawings, which illustrate embodiments to illustrate the use of the invention, but the invention is not limited to these embodiments.

Before explaining the attached drawings, the general principle of an automobile anti-theft device, which is attached to the steering mechanism of a vehicle, will be explained.

Such devices include a locking device with a key that is turned, a bolt that is actuated through a cam, and an electrical switch that has one or more positions.

The common locations of such anti-theft devices are as follows.

■) The "stop position" key is pulled out, the bolt is engaged and the electrical circuit is broken.

2) "Stop position" The key is not pulled out, the bolt is not engaged, and the electrical circuit is broken.

3) The "garage" position key is pulled out, the bolt is not engaged,
The electrical circuit is broken.

4) "Run" position, the bolt is not engaged and one ignition circuit is made (key not pulled out), 5) "Start" position,
The bolt is not engaged and the ignition and starting circuit is created (the key is not pulled out).

The operation of the anti-theft device of this invention will be explained with reference to Fig. 1.2.3. The anti-theft device includes the stator 1, rotor 2, key 8, case 33, bolt 32, thrust spring 36 acting on the bolt, and switch. A plate 34 is provided that eccentrically moves a rotor 37 and a bolt 32 using a pin 35.

Furthermore, the plate 34 is a pinion 3 that rotates freely on the rotor 2.
A pin 72 for moving 9 is provided.

The pinion 39 meshes with the rack 40.

Turning key 8 moves rotor 2, which moves plate 34 and pin 72.

Pin 72 moves pinion 39. This causes the rack 40 to move linearly.

A slot 73 is provided in the pinion 39 to ensure that the movement of the rack 40 lags the movement of the withdrawal of the bolt 32.

The method of moving the rack having the structure described in FIG. 1.2.3 using a pinion is not limited to this, and it can be provided in other rotating parts of the anti-theft device.

FIG. 4 shows control using Bowden type cables, including the injection pump 60, pump control lever 55, anti-theft key rotor 2, key 8. It includes a cable 43, a cover 44, a support member 46, and a return spring 45.

FIG. 5 shows control by flexible cables.

Ratsku and pinion are eliminated, drum 49, fixing point 50
, a return spring 51, a flexible cable or band 47, and a support member for the pulley 48.

As before, a slot 73 is provided in the drum 49 to provide a delay in the movement of the cable 47 with respect to the withdrawal of the bolt 32.

FIG. 6 shows the use of a rigid rod 62 to connect the control lever 55 to the rack 40 through a bell crank 63.

FIG. 7 shows the possibility of using hydraulic or pneumatic pressure to transmit the rank 400 linear motion to the control lever of the injection pump.

Since the details of this type of control device are well known, only its principle is shown.

The rack 40 is made integral with a piston rod 52, which is made integral with a piston (not shown) moving within a main cylinder 53.

Tube 54 transmits pressure to receiving cylinder 56 and rod 5T
The rod 57 is actuated by a piston (not shown) integral with the pump 60, and the rod 57 is actuated by the lever 55 of the pump 60.

We believe that it has been clearly shown and explained that the device of this invention performs all functions necessary for an anti-theft device, including control of the injection pump 60, by simply turning the key, and remains completely secure. (It is not possible to lock the steering mechanism of a vehicle with a diesel engine while the engine is running).

That is, in this invention, when the key is turned from the stop position to the operating position, the injection pump is activated with a time delay when the lock bolt is first removed and the lock is unlocked.

This is to ensure greater safety by operating the injection pump after completely unlocking the lock bolt.
If there is no delay, there is a risk that the injection pump will be activated and the engine will start running before the lock is released.

Furthermore, in the opposite case, the injection pump is stopped first and then the lock bolt is locked after a time delay. If there was no delay, the injection pump would not be stopped even if the lock was locked and the engine would still be running. It is dangerous.

In addition, with this invention, when the key is in the stop position,
The injection pump is in the stopped state, and the injection pump is in the operating state when the key is in the operating position and in the starting position, respectively.

This invention has the following embodiments.

1) Utility model registration In the claimed device, the movable member is a rack that meshes with a pinion coaxially attached to the rotor of the switch or the rotating member of the anti-theft device, and the rack is the rack that engages with the rotor of the switch or the rotary member of the anti-theft device. It is placed in the empty space inside the box.

2) Utility Model Registration In the anti-theft device according to the claims, the movable member is a cable wound around a drum connected to rotate together with the rotor of the switch or other rotating members of the anti-theft device.

3) Utility model registration In the anti-theft device described in the claims, the drive pinion is installed coaxially with the rotor of the anti-theft device and the rotor of the switch.

4) Utility model registration In the anti-theft device described in the claims, the transmission device is a hydraulic or pneumatic operating device.

5) Utility Model Registration In the anti-theft device described in the claims, a delay device is disposed between the rotor of the locking device and the control member of the transmission device.

6) Utility model registration In the anti-theft device according to the claims, the delay device is configured such that pins or similar members and slots provided on one of the movable members and one of the driven members cooperate with each other. It is set in.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an anti-theft device equipped with a mechanism for mounting an injection pump according to this invention, and Fig. 2 is a sectional view of the anti-theft device provided with a mechanism for mounting an injection pump.
A sectional view taken along line A, FIG. 3 is a partially enlarged view of the mechanism shown in FIG. 1, and FIGS. 4 to 7 show a mechanism that converts the rotation of the anti-theft device key into a linear motion that controls the injection pump. FIG. 3 is a perspective view showing the arrangement of various embodiments of the invention. 1...Stator, 2...Rotor 8...Key 3
2...Bolt, 33...Case, 34...Plate, 3
5...Pin. 36... Spring, 37... Switch rotor, 39...
...Pinion, 40...Ratsu 7, 43-...Cable, 44...Cable cover, 45...Spring, 46...
- Support member, 47... Cable, 48... Pulley 49... Drum 50... Fixing point, 51... Pie 1, 52... Piston rod, 53... Cylinder,
54... Pipe, 55... Control lever 56... Cylinder, 57... Rod, 60... Injection pump, 62
... Bar, 63... Percran? , 72...pin,
73...Slot.

Claims (1)

[Scope of utility model registration request] A rotor 2 rotatably provided in a case 33 and rotated by a key 8, a plate 34 fixed to the rotor 2, and a pin 72 rotatably supported by the rotor 2 and implanted in the plate 34 are rotated with a delay. A pinion 39 having a long hole 73 with an engaging shape, a rank 40 slidably mounted in the meshing case 33 with the pinion 39, a cable 43 connected to the injection pump 60 to transmit the movement of the rack 40, and a plate 34. This anti-theft device for a diesel engine vehicle includes a lock bolt 32 that locks a steering shaft by engaging with a pin 35 on the opposite side.