CA1261019A - Checking system of warning lamp of a vehicle - Google Patents

Checking system of warning lamp of a vehicle

Info

Publication number
CA1261019A
CA1261019A CA000509550A CA509550A CA1261019A CA 1261019 A CA1261019 A CA 1261019A CA 000509550 A CA000509550 A CA 000509550A CA 509550 A CA509550 A CA 509550A CA 1261019 A CA1261019 A CA 1261019A
Authority
CA
Canada
Prior art keywords
switch
series
kickstand
terminal
warning lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000509550A
Other languages
French (fr)
Inventor
Tetuo Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzuki Motor Corp filed Critical Suzuki Motor Corp
Application granted granted Critical
Publication of CA1261019A publication Critical patent/CA1261019A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005Testing of electric installations on transport means
    • G01R31/006Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Abstract A warning lamp checking circuit for use in vehicles having a main switch, a starter switch and at least one condition warning lamp. The condition warning lamp can be operative or inoperative.
Closing both the main switch and the starter switch causes the condition warning lamp to light for about one second if the condition warning lamp is operative irrespective of the condition, thereby giving any operator of the vehicle an opportunity to observe the operative nature of the condition warning lamp each time the starter switch is closed.
After about one second the condition warning lamp lights if, and only if, the condition switch is closed thereby indicating the state of the condition.

Description

~ Q-1134 VEHIC~E W~RNING LAMP CHECKING CIRCUIT
Backgrou~d Of The Invention Field Of The Invention . _ The present invention relates ~o a warning lamp checking circuit designed to determine ihe operability of a variety of warnin~ lamps frequently used on vehicles.
One such lamp is that which warns that a mo-torcycle kick-stand is still set when ~he rider attempts to start the mGtorcycle.

Description Of The Prior Art Vehicles, such as automobiles and motorcycles, are commonly provided with several kinds of warning lamps in addition to the kickstand warning lamp referred to abo~e.
These lamps are lighted to inform the-operator of the vehicle of the existence of a state that is inapproprlate for operation of the vehicle. Since they are provided for inlorming some abnormality by lighting, these lamps are not lighted when devices to which the warning lamps are connected operate normally or when these devices are set artificially in appropriate conditions. However, if a condition responsive lamp Lemains unlit, there are two possibilities. The first possibility is that the condition is normal. The second possibility is that the lamp is inoperative. The lamp may be inoperative ~or a wide variety of reasons~ It may be burned out. It may be unscrewed in its socket. It may be in a broken circuit. Consequently, there is the possibility that an unlit inoperative lamp will convey misinformation to the vehicle operator.
One of the prior art circuits used to solve the above-stated problem relies on the oil pressure lamp CiL-cuit.
The oil pressure lamp is lighted for only a brief period until the oil pressure rises after the main switch is turned .,"

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~-113~6 ~n. This feature is utilized so that warniny lamps responsive to othe. conditions are lighted simultaneously with the oil pres.~llre lamp. The use of such a circuit is confusing because ~wo ].amps responsive to two quite different conditions are lighted and extinguished simultaneously. It can be considered, in this relation, that a contact for checking is provided at the main switch so as to check up the operability of a ~onaition-responsive lamp when the main switch is operated.
However, this requires a main switch of special specifications which increases manufacturing costs~
An object of the present invention is to provide a circuit for checking the operability of warning lamps of vehicles in which the above-stated problems are solved.

Summary Of The Invention In order to solve the aforesaid problemsf;the present invention uses a publicly-known timer-switch having two output terminals, each with a different output voltage profile. In one output terminal, the voltage is ground voitage for a certain time f om the moment of impression cf a voltage on the input terminal and then increases to in~ut voltage after the passage of said time using also a construc-tion in which abnormality warning lamps of various devices and a diode being forward in the direction from a power source to the output terminal of said timer-switch, are connected in series between said output terminal of the timer and ~he power source.
According to this circuit, the abnormality warning lamps are lighted only for a certain tim.e after the start of an engine. Operability of the lamps is deter~ined only by the confirmation of the lighting of these lamps, and thus reliability on normal functions can be put on the reiated devices when the lamps are not lighted.

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~ 3 Moreover, the aforesaid object can be attainedonly by providin~ an additional circuit without any remodeling of other components such as the main switch. This makes it easy to manufacture the circuit of the present invention and also makes it possible to attach this circuit to existing vehicles.
Brief Description Of The Drawings Figure 1 is a circuit diagram of an embodiment of the present invention; and Figure 2 is a graph showing the change in voltage overtime at an input terminal 7a of a timer 7; and Figure 3 is a graph showing the change in voltage overtime at an ouput terminal 7c of the timer-switch 7; and Figure 4 is a graph showing the change in voltage overtime at an ouput terminal 7b of the timer-swi'ch; and Figure S is a side view of a motorcycle showing a preferred embodiment of the lnvention in place.

Descri~tion Of The Preferred Embodiment .
Since the present invention uses a timer-switch employed in a publicly-known decompression device, the whole of the decompression device is also disclosed in Figure 1 showing one embodiment of the present invention. This decom-pression device operates to lead the function of a device which temporarily reduces the pressure in a combustion chamber of an engine when the starter motor is operated.
A description will be ~ade on the aforesaid decom-pression device prior to the description on the present invention. Numeral 1 denotes a battery (power source) which is mounted on a vehicle (not shown) and grounded (body-grounded, and so forth) on the negative pole side. The positive pole side of the battery 1 is connected to fuses 2 and 3. The other end of the fuse 2 is connected to a source ter~inal 7a of a timer-switch 7 through a series circuit composed o -a main switch 4, a starter switch 5 and a clutch switch 5.

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~ Q-il346 The timer-swi~ch 7 has output terminals 7b and 7c and a ground terminal 7d. The ~oltage at the output terminal 7c is ground voltage, namely, zero for a certain time, e.g., ~or 1.0 seconds as shown in Figure 3. Time zero begins with the moment of impression of a constant voltage on the source terminal 7a as shown in Figure 2. After the passage of this switching time, the voltage becomes equal to the input voltage.
As for the output terminal 7b, the input voltage is main-tained for a certain tirne, e.g., for 0.5 seconds as shown in Figure A. Time zero begins with the moment of impression of a voltage on the source terminal 7a. After the passage of said period of time, the voltage becomes zero.
A circuit for operating the decompression device including the aforesaid timer-switch 7 is constructed in the following wayr The coil 9 of a relay 8 is connected between the fuse 3 and the output terminal 7b of the timer-switch 7. The normally-open contact 10 of the relay 8 and the coil 12 of a starter motor relay 11 are connected in series between the fuse 3 and the ground. The normally-open contact 13 of the starter motor ~~elay 11 is connected between the battery 1 and a starter motor 14, one pole of which is grounded. ~he starter motor is adapted to turn the main drive shaft of an internal combustion engine (not shown).
The coil 16 of â relay 15 is connected between the fuse 3 and the output terminal 7c of the timer-switcn 7. The normall~-open contact 17 of this relay 15 and a decompression device 18 are connected in series between the fuse 3 and the ground.
The above-described circuit functions as follows.
When the main switch 4 is closed for starting an engine and then the starter switch 5 is closed for a prescribed time, a current from the battery 1 flows to the source terminal 7a of the timer-switch 7 through the clutch switch 6. The clutch switch 6 is closed when the clutch pedal (not shown) 4 - ~

Q-113~6 ~ 3~

is depressed. Thereby, the tlmer-switch 7 starts a time-limiting operation. When the source terminal 7a of the tisner-switch 7 is in this state, a source voltage (e.g., a voltage of 12 volts) given by the closure of the main switch 4 takes place at the output terminal 7b only for a definite time (e.g., for O.S seconds) after the starter switch 5 is closed, as shown in Figure 4. Therefore, no current flows through the coil 9 of the relay 8 during this time, and consequently, the normally-open contact 10 remains open.
Thus, the starter motor 14 does not rotate.
After 0.5 seconds, current flows through the coil 9 of the relay 8 and the starter motor 14 rotates. Meanwhile, current passes through the coil 16 of the relay 15, 0.5 seconds earlier than said excitation; and it contil-ues to a point in time 0.5 seconds later than the point in time at which the starter motor 14 starts to rotate. Consequently, the pressure inside the combustion chamber of the engine is lowered during this time, facilitating starting.
Next, a description will be made of the construction of the present invention in which the timer-switch 7 in the aforesaid circuit is used. In this construction, a kickstand lamp 19, as one example of warning lamps, and a diode 20 being ~orward in the direction from the power source side (the main switch 4 sidP) toward the output terminal 7c are connected in series between the node of the main switch 4 and the starter switch 5 and the ouptput contact 7c of the timer-swiich 7.
Moreover) a kickstand switch 21 is connected between the node of the kickstand lamp 19 and the diode 20 and the ground.
The kickstand switch 21 is ciosed whenever the kick-stand 24 (see Figure S) is away from the side of the vehicle whether drawn out completely to be set on the la~eral side of the vehicle body for parking or held back incompletely.
Accordingly, warning is required when said switch 21 is closed, and there~ore, the kickstand lamp 19 is lighted by the circuit ~ , .

shown. When the main switch 4 is closed for starting the engine, a current is caused to flow to the kickstand lamp 19, ev~n with the kickstand switch 21 opened, by the ou~pu~ terminal 7~ whose potential is zero at that point in time. Consequently, the kickstan~ lamp 19 is lighted if it is not disconnected.
The lighting of the kickstand lamp 19 continues for 1.0 seconds in a manner similar to that of decompression device 18. By this lighting, operability of the kickstand lamp 19 is confirmed.
Referring now to Figure 5 there is shown a vehicle in the form of a motorcycle 22 having a kickstand 24 carried by the frame 26. An engine 28 is also carried by the frame 26.
As shown in Figure 5 the kickstand 24 is in the down position.
The switch 21 is, therefore, closed as shown in Figure 5. T~hen the kickstand 24 is in the up position, the switch 21 would be open as shown in Figure 1.
The circuit of the present invention can be used with a wide variety of vehicles as long as they are powered by one or more internal combustion engines. Examples of vehicles include automobiles, trucks, locomotives, motorcycles and motor-tricycles.
The same object can be attained, in the present invention, by providing in parallel an open door warning lamp 22, a diode 23 and a switch 24, for instance, in the same way as the circuit of the lamp 19, the diode 20 and the switch 21 providea between the intermediate point of the main switch 4 and the starter switch 5 and the output terminal 7c of the timer. By providing likewise in parallel a plurality of warning lamps which are lit in response to various functions of a vehicle, any inoperability of the warning lamps is automatically checked when the engine is started.

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Claims (4)

WHAT IS CLAIMED:
1. An electrical circuit for verifying the operability of a warning device provided on a vehicle for alerting a user of the vehicle of a condition of an accessory device forming part of the vehicle, the circuit comprising:
a power source;
a starter switch for an engine connected in series to the power source;
a timer switch having an input terminal connected in series to the starter switch and at least one output terminal, said output terminal being grounded for a predetermined period of time upon closing the circuit between the power source and said input terminal;
a warning device connected in series between the starter switch and said output terminal, with a diode connected in series between the warning device and said output terminal so that a closed circuit is established between the warning device and said output terminal for said predetermined period of time and the operability of the warning device may be verified; and an accessory switch connected in series between said accessory device and the warning device which is adapted to close a circuit between the warning device and said accessory device when said accessory device has a predetermined condition so as to alert the user of the vehicle of said condition.
2. An electrical circuit as claimed in Claim 1 comprising a plurality of warning devices each associated with a respective accessory device, the warning devices each connected in series between the starter switch and said output terminal, with respective diodes connected in series between the respective warning devices and said output terminal, and the accessory devices each connected to the associated warning devices by a respective accessory switch connected in series therebetween, each pair of warning devices and diodes associated with a respective accessory device being connected in parallel to other pairs of warning devices and diodes.
3. A motorcycle comprising:
A. a frame; and B. a battery having a positive terminal and a negative terminal, wherein the negative terminal is grounded to the frame; and C. a kickstand carried by the frame; and D. a main switch in series with the positive terminal of the battery; and E. a starter switch in series with the main switch;
and F. a timer-switch having an input terminal in series with the starter switch; said timer-switch further comprising a time-delay output terminal whose output potential remains at zero for about one second after an increase in the potential at the input terminal of the timer-switch; and G. a kickstand warning lamp capable of being both operative and inoperative and having an output terminal and an input terminal; wherein the input terminal is in series with the main switch; and H. a kickstand position switch carried by the frame wherein the kickstand position switch is in series with the output terminal of the kickstand warning lamp; said kick-stand position switch being closed when the kickstand is away from the frame and being otherwise open; and I. a diode, one terminal of which is in series with the output terminal of the kickstand warning lamp; the other terminal of which is in series with the time-delay output terminal of the timer-switch; and whereby closing both the main switch and the starter switch causes the kickstand warning lamp to light for about one second if the kickstand warning lamp is operative irrespective of the position of the kickstand, thereby giving any operator of the motorcycle an opportunity to observe the operative nature of the kickstand warning lamp each time the starter switch is closed; and whereby after about one second the kickstand warning lamp lights if, and only if, the kickstand switch is closed thereby indicating that the kickstand is away from the frame.
4. A vehicle having a condition responsive warning lamp designed to light in response to an unsafe condition; said vehicle comprising:
A. a frame; and B. a battery having a positive terminal and a negative terminal, wherein the negative terminal is grounded to the frame; and C. a kickstand carried by the frame; and D. a main switch in series with the positive terminal of the battery; and E. a starter switch in series with the main switch; and F. a timer switch having an input terminal in series with the starter switch; said timer-switch further comprising a time-delay output terminal whose output potential remains at zero for about one second after an increase in the potential at the input terminal of the timer-switch; and G. a condition responsive warning lamp capable of being both operative and inoperative and having an output terminal and an input terminal; wherein the input terminal is in series with the main switch; and H. a condition responsive position switch carried by the frame wherein the kickstand position switch is in series with the output terminal of the condition responsive warning lamp; said condition responsive position switch being closed when the condition is safe and being closed when the condition is unsafe; and I. a diode, one terminal of which is in series with the output terminal of the condition responsive warning lamp; the other terminal of which is in series with the time-delay output terminal of the timer-switch; and whereby closing both the main switch and the starter switch causes the condition responsive warning lamp to light for about one second if the condition responsive warning lamp is operative whether the condition is safe or unsafe, thereby giving any operator of the vehicle an opportunity to observe the operative nature of the condition responsive warning lamp each time the starter switch is closed; and whereby after about one second the condition responsive warning lamp lights if, and only if, the condition responsive switch is closed thereby indicating that the condition is unsafe.
CA000509550A 1985-06-04 1986-05-20 Checking system of warning lamp of a vehicle Expired CA1261019A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1985084023U JPH049228Y2 (en) 1985-06-04 1985-06-04
JP60-84023 1985-06-04

Publications (1)

Publication Number Publication Date
CA1261019A true CA1261019A (en) 1989-09-26

Family

ID=13818966

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000509550A Expired CA1261019A (en) 1985-06-04 1986-05-20 Checking system of warning lamp of a vehicle

Country Status (5)

Country Link
JP (1) JPH049228Y2 (en)
CA (1) CA1261019A (en)
DE (1) DE3618722C2 (en)
FR (1) FR2582600B1 (en)
GB (1) GB2177515B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252222B1 (en) * 1986-06-27 1991-03-13 Audi Ag Circuit for the voltage supply of an electric unit
DE10012023A1 (en) * 2000-03-11 2001-09-20 Bosch Gmbh Robert Monitoring function of visual display involves detecting defect in visual display and outputting signal detectable by vehicle driver, e.g. steering wheel vibrations, if display defective
DE10349769B3 (en) * 2003-10-24 2005-08-18 Adam Opel Ag Instrument display system for a motor vehicle comprises control light elements, and an electronic control/evaluation system with a time switch clock on starting an engine to control the light elements in a time-delayed manner
KR102174402B1 (en) * 2018-12-24 2020-11-04 주식회사 유라코퍼레이션 Battery charging status indicator system for electric vehicle and control method for the same

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026315B2 (en) * 1970-05-29 1972-04-06 Philips Patentverwaltung Gmbh, 2000 Hamburg MONITORING CIRCUIT
US3788671A (en) * 1972-03-20 1974-01-29 A Macalpine Kick stand
GB1463057A (en) * 1973-02-02 1977-02-02 Lucas Electrical Ltd Vehicle lubricant warning systems
JPS5081190U (en) * 1973-11-30 1975-07-12
FR2255775A1 (en) * 1973-12-20 1975-07-18 King Gordon Vehicle failure lamp indicating cct. - signals failures of one or several lamps in and contains resistors in series with lamps
FR2260488A1 (en) * 1974-02-08 1975-09-05 Delacroix Alain Security lock for motor cycle - has switch on strut under bottom bracket connected with ignition circuit
US3899770A (en) * 1974-04-01 1975-08-12 Ford Motor Co Multiple input warning system for a motor vehicle
US4010379A (en) * 1974-12-20 1977-03-01 Kawasaki Jukogyo Kabushiki Kaisha Safety device for a motorcycle
JPS5839943Y2 (en) * 1975-07-17 1983-09-08 ソウゴウジドウシヤアンゼンコウガイギジユツケンキユウクミアイ How to use the system
DE2548138B1 (en) * 1975-10-28 1977-04-14 Daimler Benz Ag DEVICE FOR AUTOMATIC CHECKING OF INDICATOR LAMPS
IT7853319V0 (en) * 1978-05-15 1978-05-15 Borletti Spa FUNCTIONAL EFFICIENCY CONTROL DEVICE FOR VEHICLES
DE2832556A1 (en) * 1978-07-25 1980-02-14 Bosch Gmbh Robert Monitoring circuit for incandescent lamps in motor vehicles - has signal store connected to voltage divider also connected to lamp
FR2495555A1 (en) * 1980-12-05 1982-06-11 Neiman Sa Antitheft device for motor vehicle - uses electric motor driving screw to extend device and lift wheels of vehicle, to which it is externally fitted, from ground
GB2092350A (en) * 1981-01-29 1982-08-11 Kavia Moulded Products Ltd Inadvertance warning devices
JPS5932107A (en) * 1982-08-16 1984-02-21 Seiko Epson Corp Composite soft magnetic material

Also Published As

Publication number Publication date
JPH049228Y2 (en) 1992-03-09
DE3618722C2 (en) 1997-09-11
FR2582600B1 (en) 1992-10-23
GB2177515A (en) 1987-01-21
JPS61199439U (en) 1986-12-13
FR2582600A1 (en) 1986-12-05
DE3618722A1 (en) 1986-12-18
GB8612536D0 (en) 1986-07-02
GB2177515B (en) 1989-09-13

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