FI91951B - Alarm device for a coupe fed with mains current and/or engine heater in a vehicle, such as a car or a contract machine - Google Patents

Description

91951 ALARM DEVICE IN A POWER-BASED INTERNAL AND / OR ENGINE HEATER FOR A VEHICLE SUCH AS A CAR OR APPLIANCE 5 The present invention relates to an alarm device as defined in the preamble of claim 1.

The following describes an alarm device that can only be connected to the car's interior and engine heaters, but the alarm device of exactly the same size is suitable for use with all kinds of other vehicles, such as tractors and work machines.

In cold countries, a lot of car heaters and engine heaters are used in winter. These devices use mains-15 power and are most commonly powered from either a mains socket or an external socket using an interface cable. The junction box in cars is most commonly in the front mask, bumpers or on the side of the engine compartment.

20 If you forget to disconnect the connecting cable from the car and start moving the car, there will usually be varying degrees of damage to the electrical pole, the connecting cable, the terminal box and the car. There is also a high risk of electric shock from a damaged power cord.

25 Examples of damage caused by a forgotten connection cable for a car or engine heater: bent bonnet detached / torn mask 30 - bent skirting plates damaged resistors bent pole parts / box bottoms; - damaged connection cables with broken element cables.

35

There is no alarm device with a similar function on the market.

An alarm device with a digital controller in the dashboard is already known. When the heater is connected to the mains, the small light (LED) on the 91951 2 dashboard illuminates. This warning light is powered by the mains and the warning works when the mains is on. However, the disadvantage of this device is that it does not sound in any way when the connection cable is still plugged in but the mains power has been interrupted. Such situations occur, for example, when the watch device has already switched off, the fuse has blown or there is an interruption in the mains power for some other reason.

The object of the present invention is to eliminate the above-mentioned drawbacks and to prevent damage caused by a forgotten connection cable of a car or engine heater when starting a car. The device warns the driver with an indicator light and a buzzer sound if the heater connection cable is connected in the car when the car is switched on.

The alarm device according to the invention is characterized by what is set forth in the characterizing part of claim 1.

Other embodiments of the invention are characterized by what is set forth in the characterizing part of the other claims set out below.

The advantage of the alarm device according to the invention is that it improves the user safety of car and engine heaters. Due to the simple structure and readiness, the manufacturing cost of the device is low. In addition, the device can also be retrofitted. The retrofitting can also be done yourself, because the element cable is of the plug-in type, in which case only the element cable suitable for the invention can be easily replaced in the heater 30 already installed.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 shows in simplified form an alarm device according to the invention mounted in a car, Fig. 2 shows a heater junction box and Fig.

5 The actual engine heater and any interior heater are of the standard type. To conduct mains power to the heater, the apparatus comprises a plug-in type element cable 8, one end of which is connected to the heater apparatus itself and the other end has a junction box 9. The junction box is generally attached to the front, bumper or engine compartment side of the car. The connection cable 7 is most often used as an accessory, one end of which is connected to the socket 9 and the other end to the mains, respectively, via either the mains socket or the wall socket. The auxiliary alarm device 15 according to the invention itself consists of a switch 2 as a switching element, a relay 3, a buzzer / indicator light combination 1 as an alarm element and a fuse 5, all connected to the same alarm circuit. The alarm device could be further simplified by omitting the fuse, relay and either buzzer or indicator light, but in this case the reliability and service life of the alarm device could suffer.

A microswitch-type circuit breaker 2 is placed inside the junction box 9 for protection against moisture and dust. The circuit breaker 2 is positioned so that when the connection cable 7 is connected to the terminal box 25 9, the plug of the connection cable presses the circuit breaker. Switch 2 is connected to the car's own circuit, in series with the car's ignition lock 4. A buzzer / indicator combination is attached to the car's dashboard or other suitable location inside the car, which is further connected to the alarm circuit via a relay 3. Relay 30 3 is either in the car's engine compartment or in another suitable location. The alarm device is powered by the car battery 6 via fuse 5.

«The alarm device works as follows: Switch 2 in terminal box 9 switches on when the connection cable 7 is connected to terminal box 9. If the car is switched on by ignition 4, the alarm circuit is switched on and relay 3 switches on the buzzer / indicator combination 1. the combination then alarms until either the connection cable 7 is disconnected 91951 4 from the terminal box 9, whereupon the circuit breaker 2 is switched on, or the ignition is switched off from the car, whereby the ignition switch 4 is switched on.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to the above example, but may vary within the scope of the claims set forth below. Thus, the circuit breaker 2 does not have to be inside the junction box 9, but can also be implemented in different ways in the flap mechanism of the junction box 10. If a separate junction box is completely missing and the heater has been pulled directly from the heater, for example by a coiled coil to a wall or socket outlet, the circuit breaker may be in the mains plug instead of the junction box. In this case, the circuit breaker is always closed when the connecting line 15 is mechanically connected to the network, regardless of whether the connecting line is energized or not. The alarm device can also be designed so that the alarm circuit is powered by a separate battery or accumulator, but the device must nevertheless be connected to the car's ignition circuit or some other suitable function, which must always be performed by the driver before driving.

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Claims (3)

91951 5 1. An alarm device in a mains-operated internal and / or motorized nozzle of a vehicle, such as a car or a working machine, which has a connection box (9) for connecting the heater to the mains, for example by means of a connection cable (7), characterized in (2), with which at least one alarm element (1) is further connected to the same circuit. Alarm device according to Claim 1, characterized in that the switch element (2) and the alarm element (1) are connected to the vehicle circuit so that the alarm element alarms if the ignition is switched on when the switch element (2) is switched on. Alarm device according to Claim 1 or 2, characterized in that the switch element (2) is a push switch and that the switch element is arranged on the inner surface of the heater connection box (9) so that the switch element (2) is switched on whenever the connection cable (7) is mechanically connected to the terminal box (9). 25 91951