DE2258991A1 - SAFETY BELT SYSTEM FOR VEHICLES - Google Patents

Description

Patent attorneys

Dr. Dieier F-Mort
Dr. Hans-A. Browns
8München86, PieiBerieu _e rstr. 28. ^ December 1972

P 638

IRVIN INDUSTRIES INC.

51 Weaver Street, Greenwich, Connecticut,

V.St.A.

- Seat belt system for! Vehicles.

Various seat belt systems are already known in which the passengers of a vehicle are warned that their seat belt or other restraint device is not properly arranged. A basic 'hang in' known such systems consists in the correct fastening of the seat belt system on the passenger no particular importance was attached, d. that is, the system was usually fine if the seat belt was on was closed, whereby a successful operation of the system could be circumvented that some passengers only put their seat belts in split and then "sit on them."

The present invention is based on the object of creating a seat belt system through which the passengers Be encouraged to have their seat belts properly on you

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because it is extremely difficult to secure the security system to bypass.

The invention is also based on the object of a seat belt system to provide which has a device to indicate to the passenger that the seat belt system is not properly arranged, being a safety circuit is provided with switches that respond to certain states and that are operated in a certain sequence have to.

Although the invention in connection with "a motor vehicle" it is obvious that it can be used in conjunction with other vehicles as well.

The invention will then be described using an exemplary embodiment with reference to the drawings. Show it:

Fig. 1 is a circuit diagram of an embodiment of an improved Safety circuit in which the device, which indicates to the passenger, that the seat belt system is incorrect is arranged, has a device that prevents normal operation of the vehicle,

FIG. 2 shows a modified embodiment of that shown in FIG Device to prevent normal vehicle operation,

.Fig. 3 a circuit diagram of an improved safety circuit, which has a normal vehicle operation prevention device and an alarm device, and

4 is a schematic view of an integrated circuit a dual buffer which can be used in the safety circuit according to FIG. 3.

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In the drawings, the safety circuit of Fig. 1 A, the modified relay device of Fig. 2 B, the safety circuit of Fig. 3 ^m i "b G and integrierte'Schaltkreis FIG. 4 designated by D.

Both safety circuits A and C have a section 10, which ensures the correct attachment of the seat belt system to the driver and a section 11, which Ensures that the seat belt system is properly fastened to a passenger. It is also indicated how other sections can be provided, which are intended for additional passenger seats. It is therefore within the scope of the invention Provide a safety circuit for one or more people in the vehicle.

The two safety circuits A and C. also have a Device 13 for preventing normal ferry operations on, the safety circuit C also having an acoustic alarm device 14 and a visual alarm device 15 contains. The devices 13, 14 and 15 are as exemplary embodiments specified by devices by which a person in the vehicle can be warned that a particular seat belt system is incorrectly positioned.

With reference to the safety circuit A, it should be said that section 10 for the driver and section 11 for the Passenger can be identical, each section responsive to certain operating states switching devices 18 and 19 and furthermore a first circuit arrangement 21 parallel to a second circuit arrangement 22 and a rectifier arrangement 25 for interruption the first circuit arrangement 21 is provided when the switching device 19 closes afterwards the switching device 18 opens.

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The switching device that responds to a specific operating state 18 preferably consists of a normally open switch that is closed when a switch driver assumes a certain seating position. This scha]. · Ter can be used in conjunction with the driver's seat from a normally an open pressure switch, which is located in the driver's seat and which is operated or closed if the driver assumes his normal sitting position. The switching device 18 for passengers can also consist of normally open, pressure-sensitive switches, which are arranged in corresponding passenger seats and which are actuated or closed when a passenger is seated Takes seat-

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The switching device that responds to a specific operating state 19 preferably consists of one normally closed switch, which is activated by closing the The seat belt device of the respective seat position is opened, which the associated switching device 18 of the same Schaltkreisabecbnittes is assigned. the Switching device 19 can be attached to the buckle of the seat belt system be arranged that it is actuated or opened in a known manner when the closure parts together are connected; the switching device i9 can on a known belt retractor be arranged, so that when you remove the seat belt from the belt retractor is opened; the switching device can also be connected to the seat belt system in some other way be connected so that it is actuated when. the belt device is correctly arranged on a passenger.

The rectifier arrangement 25 can consist of a controlled Siliciua rectifier exist, which turns on when a positive pulse is applied to its control electrode.

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As is ersiclrfclicli from the Zei.clm.ung ;, kaxm both the ab-. Section 10 for the driver like section 11 for the passenger and any other sections that may be provided Sections for passengers are connected to a bus 28 connected to a switching transistor 30 " The switching transistor JO preferably consists of an NPK transistor, in which, a current flow from the line 31 and is maintained by the collector-emitter path of the same to line 32 and thus to device 13, so long a current through line 28 to the base of the transistor flows.

The device 13 of the safety circuit A consists of a normally closed relay 33 · ^ ¹¹ a usual starter circuit "a line 35 is provided which leads from the starter coil to a starter switch 3 & then via a line 37 to earth" This usual starter circuit was modified by placing the normally closed relay 33 on line 37.

The safety circuit A works in the following way:

The operation of section 10 for the driver will first be discussed. During normal operation, the driver steps in enter the vehicle, take a seat, and then fasten the seat belt. As soon as the Fahrex * is on his Seat is seated, the sleeper 18 closed and if it is assumed that he is wearing the seat belt has not yet moved into the correct position, so is the switching device '^ closed. Electricity thus flows through the switching devices 18 and 19 to the rectifier arrangement 25, which is switched on and another Current flow through the circuit arrangement 21 is prevented. However is a current flow through the circuit assembly 22 and whose mode 4Ü to line 28 and switching transistor 30 on

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right, so the relay is normally closed 33 is opened. If the seat belt is now correct ata driver attached, the switching device opens 19 * ' whereby the circuit arrangement 22 is interrupted, whereby a further current flow through the switching transistor JO is turned off so that the normally * closed Relay 33 closes and the vehicle can be started.

If the driver tries to bypass the system, for example, by keeping the seat belt closed, even when not in the vehicle, this will make the normally closed switch 19 made to remain open so that when the driver has taken his seat, the rectifier assembly 25 does not turn on and power through circuitry 21 and its diode 41 to line 28 and thus to the switching transistor 30 flows, so that normally closed relay is opened and the vehicle cannot be started.

The safety circuit described thus requires one in a row made actuation of the first switching device 18 and then the switching device 19 »so that the vehicle can be started.

The section 11 for the passenger works in the same way as above in connection with the section 10 for the Driver was specified, with the actuation of the first switching device 18 and then carried out in a row the switching device 19 is required to start the vehicle is.

It should be noted that other corresponding Actuating elements instead of the switching transistor JO and the relay 33 used, can be grounded. For example, geinäss l'ig. 2 the device 13 from a normally closed

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its controllable silicon rectifier 45 exist.

In the case of safety circuit C, many of its elements are identical> with the elements previously described in connection with the safety circuit A and the same have the same reference numerals Mistake.

In this embodiment, the section 10 for the driver and the section 11 for the passenger can be a time delay device 47 included. As can be seen, the time delay device 47 can comprise a capacitor 48, which is connected via a line 49 to a switching device 18 '. The time delay device 47 is provided in order to allow the switching device 18 to be opened briefly without the acoustic alarm device 14 and the visual alarm device 15 is actuated, which could occur "when a passenger moves in his seat or the driver leans forward to get something out of the glove refer to. The time delay device 47 is calibrated in such a way that after a desired period of time appeals to.

in some cases it may be desirable to use relay 33

short-circuit, for example when a mechanic is on

Vehicle is working ο A switch 50 can be provided for this purpose be.

The Schalttraiiöistor 30 is operated in the same way as. previously described in connection with the safety circuit A. became.·

The acoustic alarm device 14 can be a loudspeaker which can be actuated by an oscillator 57 which has, for example, a 1000 Hz output, and the visual alarm device 15 'can consist of flashing lights 58, 59 and 60, which are generated by a pulse generator'62

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fed v / ground, which for example has a 2 Hz output owns. Both oscillators 57 and the pulse generator 62 can consist of an integrated circuit according to Fig. 4-, wherein the control circuit in the manner shown has resistors and capacitors, which astable multivibrators form. .

The oscillator 57 and the pulse generator 62 are preferred arranged in sequence so that the pulse generator 62 is the oscillator 57 supplied with pulses. A zener diode 64- can each intended for the oscillator and the pulse generator with the Zener diode working as a voltage regulator »so that the one on each of the integrated circuits Voltage is kept below 3.9 volts.

The stable multivibrator of the pulse generator 62 is preferably used in the circuit in such a way that K ₁ = E ₂ = 2.2 kjQ and that, furthermore, C ^ = C ₂ = 100/1 l · ', with the pulse outputs 1 and 2 180 ° are out of phase with each other and the impulses are emitted at approximately 2 Hz. A positive voltage between 3 »0 and 3» 9 volts can be used as input. The task of the pulse generator is not only to activate the flashing lights and interrupt the acoustic signal, but also to ensure a non-pulsating, uniform current to the heating device 33 'so that the vehicle is not started when a current flows through the safety circuit flows. As a result, two outputs that are 180 ° out of phase are required on the pulse generator, one of which enables the flashing lights to be actuated and the other of which enables current to flow to the relay device 33 'when the flashing lights are switched off. This is achieved by the switching transistor 66, that is to say the switching transistor 66 emits pulses intermittently when interruptions occur in the current flow through the switching transistor 67.

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The oscillator 57 uses the same circuit as the pulse generator 62 ,. only is ^ now'E. = R ^ ⁼ 10 k £ L and C, = Cp = 0.1 / UF, whereby only one exit is required.

As shown, the speaker 55 is with the control circuit connected by lines 70 and 71. If the auxiliary child age 72 is open, the loudspeaker can be switched off.

The blinkers 58, 59-60 are preferably connected in parallel to lines 74- and -75 which lead to the control circuit. The auxiliary switch 76 is provided for controlling the pulse generator. In the position shown, the lights switch on and off. If the switch is moved to another position, the lights shine evenly. The lines 7S ₅ 79 and 80 lead from the auxiliary switch 76 to the control circuit.

The basic mode of operation of safety circuit A is in the control of starting the vehicle, where · Ensuring that the passengers use their seat belts properly applied before the vehicle can be started. However, once the vehicle is started, they are no facilities exist to inform passengers that one of them has loosened the seat belt or that a passenger who got on later has loosened his seat belt has not yet attached. It can be seen that in the safety circuit 0 loosening a previously closed 'seat belt or the omission of a boarding Passenger to put on his seat belt, an acoustic alarm device 14 and a visual alarm device 15 actuated. '' '·.

It is obvious that the reference to a seat belt system also includes shoulder straps and is to be understood broadly enough to include all embodiments of retaining devices for riders, .which for theirs

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- Correct position in relation to a passenger a ¥ connection of require certain elements.

It is also evident that in the electrical circuitry various changes could be made. For example, common ones could be used for the flashing lights l'vehicle flashing signals are used to indicate the one shown To replace the pulse generator and the starter switch buzzer currently used in automobiles to Indicating that the key has been left in the starter switch could be used to replace the oscillator will. In addition, the circuit could be a transit gate version or be executed in a known manner in Hiniaturausführung.

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Claims (1)

P at en ta η β ρ γ , ü Seat belt system for .vehicles, characterized by a first and second switching device responsive to an operating state and by means which prevents normal vehicle operation if the second switching device does not follow in chronological order the first switching device is operated. Device according to claim 1, characterized in that the second switching device is actuated in that at least one seat belt arrangement is closed. Device according to claim 1, characterized in that the vehicle has a starter circuit and that the safety circuit has a device for interruption of the starter circuit between the sequential actuation of the first and second switching devices. Device according to claim 5, characterized in that the device for interrupting the starter circuit has a relay arrangement which, for the purpose of interruption of the starter circuit can be actuated, and that the first Switching device can be actuated by a passenger taking a seat at a predetermined seat, whereby the Relay arrangement is actuated, and that the second Switching device can be actuated by closing the seat belt system on the respective passenger seat and so that the relay arrangement is switched off. Device according to claim 1, characterized in that the safety circuit has an alarm device which is actuated by actuating the first switching device ■ and is then actuated during the subsequent actuation 30982 ₄ "/ 0851 BATH 638 the second switching device is switched off. 6. Apparatus according to claim 5, characterized in that the first switching device is operated when a passenger on a given seat place nisrat »and that the second switching device is operated by the Seat belt assembly is closed on this seat. 7 · Device according to claim 6, characterized in that » the safety circuit has a time delay device having plural marriage after a sequential activity the first and second switching device a brief disconnection of the first switching device without Triggering of the alarm device permitted. 8. Seat belt system for vehicles, characterized by a safety circuit, which is a first and a second switching device responsive to an operating state has, as well as an alarm device, which by actuation the first switching device is switched on and then it is switched on when the second is actuated Switching device is switched off. 9. Apparatus according to claim 8, characterized in that the first switching device is operated when pin passenger at a given seat, takes, and that the second switching device is actuated by closing the seat belt arrangement on the respective seat will. 10. The device according to claim 9, characterized in that the safety circuit has a time delay device which allows a brief disconnection of the first switching device of a successive actuation of the first and second switching device without actuation of the alarm device. ,, _ ₁₂ BAD ORIGINAL 3 09 8 24/08 SI ^Ρ63δ '225899 11 «Seat belt system for vehicles, characterized by an electrical power source, a safety circuit with a first and a second to an operating state> responsive switching device, a urinary device to warn a hit driver if the seat belt-- system not '^ is correctly applied and a switching transistor, which is effectively connected to the power source of the warning device when the switching transistor is switched on, the first and second switching device are connected to the electrical power source and thus in operative connection with the switching transistor stand that actuation of the first switching device switches on the switching transistor and that this is switched off by the subsequent actuation of the second switching device. 12. The device according to claim 11, characterized by first and second circuits connected in parallel between of the first switching device and the switching transistor, the second switching device normally deicing is closed and arranged in series in the second circuit, and further the first switching device . normally open and when closed, supplies electrical energy to the first and second circuits, the first circuit ^{comprising means:} which enables electrical energy to be supplied to the switching transistor if the second switching device is opened before the second switching device is closed , with a rectifier arrangement for interrupting the first circuit when the second switching device is opened following the closure of the first device. 13. The device according to claim 11, characterized in that that the switching transistor consists of an EPßf transistor. - ■ 1 * 5 ~~ 'B _AD ORIGINAL 30 9 8 24/0851 ^ 14. The device according to claim 12, characterized in that the rectifier arrangement is a controllable silicon rectifier and that the switching transistor * consists of a NEN transistor. - 15- seat belt system for vehicles, characterized by a seat arrangement, a seat belt arrangement and a starter circuit for the vehicle, as well as a safety circuit, which is a normally closed relay arrangement for occasional interruption of the starter circuit when the relay arrangement is opened, with a normally open first switching device, which is assigned to the seat arrangement and is in operative connection with the relay arrangement, so that when the seating arrangement is occupied, the normally open one first switching device closes and the relay arrangement opens, whereby the starter circuit is interrupted, with a normally closed second switching device, which is assigned to the seat belt assembly is, so that a closure of the seat belt assembly is the normally closed second switching device opens with the first and the Second switching device in said safety circuit in operative connection with one another and with the relay arrangement Are arranged, in such a way. That, an actuation of the first switching device before actuation the second switching device is required so the second switching device closes the normally closed relay arrangement and an operation of the Starter circuit allows after the starter circuit when opening the relay arrangement by actuating the Switching device has been interrupted. BATH ORIGINAL - 14 30982A / 0851