JPH0825998A - Interlock device for automobile - Google Patents

Abstract

PURPOSE:To operate an engine, even when a door is opened, by providing such a control means as actuating an accelerator interlock means in an open door condition as well as after the start of engine operation, upon receipt of signals from an open door detection means and an engine operation detection means. CONSTITUTION:An accelerator interlock mechanism 10 is connected to a motor 1 and, then, to a power supply 13 via the contact of the first relay 11 and a key switch 12, and driven, when the key switch 12 and the first relay 11 are turned on. The excitation coil of the relay 11 is connected to the power supply 13 via the contact of the second relay 14 through the key switch 12. This excitation coil of the relay 11 is, on the other hand, connected to a door switch 16 and a door lamp to be turned on when a door is opened, via a wraparound prohibition diode 15. According to this construction, the contact of the first relay 11 is turned on and an accelerator interlock is actuated, when the door is opened with the second relay 14 in operative state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile interlock device, and more particularly to an accelerator interlock device.

[0002]

2. Description of the Related Art An automobile is equipped with an accelerator interlock mechanism for prohibiting depression of an accelerator pedal for safety. In order to prevent the vehicle from starting when the door of the vehicle is open, a support rod (rod) is extended to the lower portion of the accelerator pedal by a door open detection signal to prevent the depression of the pedal. FIG. 3 shows an accelerator interlock mechanism using a motor, in which a rod 2 formed to be extendable and retractable by driving a motor 1 is attached to an accelerator pedal 3.
To prepare for the lower floor of the, while the accelerator interlock is operating,
The rod 2 extends and becomes a big rod of the accelerator pedal 3, which makes it impossible to depress this pedal. On the other hand,
When the interlock is released, the rod 2 is contracted so that the accelerator pedal 3 can be freely depressed.

[0003]

However, when the accelerator interlock is activated by opening the door, the door open is detected by the door switch. The accelerator interlock operates under the condition of this door opening. Then, it will not be possible to run idle to stabilize the idling immediately after operating the engine. In particular, it is very inconvenient when the engine is always operated with the door open like a bus. In this case, instead of the structure shown in FIG. 3, in the structure in which the rod is moved by the solenoid, the rod may be pushed down by hand to release the interlock of the accelerator pedal, but as shown in FIG. This is not possible with the interlock by the motor 1. In any case, it is preferable to prevent the interlock from being activated due to the engine not operating even when the door is open.

In view of the above-mentioned problems, the present invention provides an automobile interlock device in which the interlock at the time of engine start is made inoperative.

[0005]

Means for Solving the Problems The present invention which achieves the above-mentioned object, comprises: (1) door opening detecting means for detecting that the door is in an open state, and engine operation for detecting that the engine is in an operating state. The detecting means, the accelerator interlock means for prohibiting the depression of the accelerator pedal by the operation, the detection signals from the door opening detecting means and the engine operation detecting means, the door is in the open state, and the engine is started after the operation. Control means configured to operate the accelerator interlock means, and (2) the control means includes a first relay for controlling power supply to the accelerator interlock means and the first relay. A second relay for controlling power supply to the second relay, the second relay being configured such that the engine operation detecting means is closed after the operation of the engine is detected. The first relay is configured to be closed to operate the accelerator interlocking means when the second relay is closed and the door opening detecting means detects the door opening, (3) ) Door open detection means for detecting that the door is in an open state, engine operation detection means for detecting that the engine is in an operating state, and startable state detection means for detecting that the vehicle is in a startable state. , The accelerator interlock means for prohibiting the depression operation of the accelerator pedal by the operation, the door open detection means, the engine operation detection means, and the detection signal from the startable state detection means, the door is open and the engine is After the start of operation, and when the vehicle is ready to start, the accelerator interlock means is configured to operate. And (4) the control means has a first relay for controlling power supply to the accelerator interlock means and a second relay for controlling power supply to the first relay. The second relay is configured to be closed when the engine operation detecting means detects the operation of the engine and the startable state detecting means detects the startable state, and the first relay is in the closed state. Moreover, when the door detection means detects that the door is closed, the door interlock means is closed to operate the accelerator interlock means. It is a delay relay that closes after a predetermined time after detecting the operation of (6) The door is an automatic door and an automatic door opening / closing switch for opening and closing the automatic door is provided. The control means is configured to prohibit the opening operation of the automatic door by the automatic door opening / closing switch when the vehicle is ready to start.

[0006]

[Function] The accelerator interlock cannot be operated unless the door is opened and the engine is operated because not only the door switch for detecting the door opening but also the operation detection by the engine operation detection means are set as the condition of the accelerator interlock. , You can now depress the accelerator when starting the engine.

[0007]

EXAMPLE An example of the present invention will now be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes, for example, an accelerator interlock mechanism shown in FIG. 3, which is electrically connected to the motor 1 shown in FIG. The accelerator interlock mechanism 10 is connected to a power source 13 via a first relay 11 having an a contact and a key switch 12. And
The accelerator interlock mechanism 10 includes a key switch 12
It is driven when the first relay 11 is turned on. The exciting coil of the first relay 11 is connected to the power source 13 via the key switch 12 via the b contact of the second relay 14, and the exciting coil of the first relay 11 is, on the other hand, via the sneak prevention diode 15. It is connected to the door switch 16 and a door lamp (not shown). The door switch 16 is a switch that is turned on when the door is opened. Therefore, when the second relay 14 is inactive, the a contact of the first relay 11 is turned on by opening the door, and the accelerator interlock is activated.

In this embodiment, the exciting coil of the second relay 14 having the b-contact is connected to the engine operation detecting switch 17. This engine operation detection switch 17 is
For example, an engine oil pressure switch or a voltage switch at the L terminal of the all-terminator can be used, and the switch is turned on when the engine is not operating. That is, even if the key switch 12 is turned on, the engine operation detection switch 17 is turned on, the second relay 14 is operated, and the b contact is turned off when the engine is not operating. For this reason, even if the door is open and the door switch 16 is turned on, the first relay 11 is not excited and the a-contact remains off. As a result, the accelerator interlock mechanism 10 will not operate. Thus, even if the door is opened and the door switch 16 is turned on, the accelerator interlock does not operate in a state in which the engine does not operate reliably, and the engine is reliably started by depressing the accelerator. When the engine operation detection switch 17 is immediately turned on by the operation of the engine, idling may not be stable. Therefore, if the second relay is a delay relay that keeps on for several seconds, the engine start will be more reliable. .

In the embodiment shown in FIG. 1, the accelerator interlock is deactivated when the engine is started, and after the engine is started, the door is opened to activate the accelerator interlock. In the embodiment shown in FIG. 2, the accelerator interlock is deactivated when the vehicle is not in the traveling state before and after the engine is started.
That is, the accelerator interlock switch is deactivated by turning on the parking brake switch or the neutral switch. In FIG. 2, 10 is an accelerator interlock mechanism, 11 is a first relay having an a-contact, 12 is a key switch, 13 is a power supply, 14 is a second relay, 15 is a sneak prevention diode, and 16 is turned on when the door is open. The door switch 17 is an engine operation detection switch that is turned on when the engine is stopped, and these have the same configuration as that of FIG.

In this embodiment, the neutral switch 18 and the parking brake switch 19 are connected in parallel with the engine operation detection switch 17 connected to the exciting coil of the second relay 14 via a sneak-in prevention diode. . That is, the neutral switch 1
8. Even if the parking brake switch 19 is turned on, the exciting coil of the second relay 14 is energized regardless of whether the engine is operating or not, and even if the door switch 16 is turned on by opening the door, the first relay 11 is not excited and the accelerator interlace is not activated. The lock 10 will not operate. That is, the accelerator interlock 10 does not work while the vehicle is stopped even when the engine is operating. The engine is started smoothly with the door open, and at the same time the vehicle is prevented from starting with the door open.

The neutral switch 18 and the parking brake switch 19 shown in FIG. 2 together with the third relay 20 enable the automatic door opening operation only while the vehicle is stopped. That is, the automatic door of the bus or the like can be opened only when the neutral or the parking brake is turned on.
The third relay 20 has an a contact for generating an automatic door opening output from the power source 13 through the open contacts of the key switch 12 and the door opening / closing switch 21, and the exciting coil of the third relay 20 is the power source 13 and the neutral point described above. It is connected between the switch 18 and the parking brake switch 19. As a result, an automatic door open output is generated when the door open / close switch 21 opens the door only when the neutral or parking brake is turned on. The door is closed by the closing contact of the door opening / closing switch 21. In this way, by turning on the neutral switch 18 or the parking brake switch 19, the accelerator interlock can be deactivated and the opening of the door can be controlled.

[0012]

As described in the above embodiments, according to the present invention, even if the door is opened while the engine is stopped, the accelerator interlock remains inoperative, so that the engine can be easily started by depressing the accelerator. Further, even when the vehicle is stopped, even if the door is opened, the accelerator interlock becomes inoperative, so that the vehicle can be prevented from starting and the engine can be easily started in the open state.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention.

FIG. 2 is a circuit block diagram of another embodiment of the present invention.

FIG. 3 is a view showing an example of an accelerator interlock mechanism.

[Explanation of symbols]

 10 Accelerator Interlock Mechanism 11 First Relay 12 Key Switch 13 Power Supply 14 Second Relay 16 Door Switch 17 Engine Operation Detection Switch 18 Neutral Switch 19 Parking Brake Switch 20 Third Relay 21 Door Open / Close Switch

Claims (6)

[Claims] 1. A door opening detecting means for detecting that the door is in an open state, an engine operation detecting means for detecting that the engine is in an operating state, and an accelerator interlock for prohibiting depression of an accelerator pedal by the operation. Means and control means configured to operate the accelerator interlock means after the door is opened and the engine is started to receive detection signals from the door opening detection means and the engine operation detection means. Equipped car interlock device. 2. The control means has a first relay for controlling power supply to the accelerator interlock means and a second relay for controlling power supply to the first relay, and the second relay detects engine operation. The means is configured to be closed after detecting the operation of the engine, and the first relay is closed to operate the accelerator interlock means when the second relay is in the closed state and the door open detection means detects the door open. The interlock device for an automobile according to claim 1, wherein the interlock device is configured to operate. 3. A door opening detecting means for detecting that the door is in an open state, an engine operation detecting means for detecting that the engine is in an operating state, and a startable state for detecting that the vehicle is in a startable state. The state detection means, the accelerator interlock means for prohibiting the accelerator pedal depression operation by the operation, the detection signals from the door opening detection means, the engine operation detection means, and the start-ready state detection means, and the door open state. An interlock device for an automobile, comprising: a control means configured to activate the accelerator interlock means when the engine is in operation and the vehicle is ready to start. 4. The control means has a first relay for controlling power supply to the accelerator interlock means and a second relay for controlling power supply to the first relay, and the second relay detects engine operation. Means for detecting the operation of the engine and the startable state detecting means for closing the startable state, the first relay is in the closed state, and the door detection means is for closing the door. The interlock device for an automobile according to claim 3, wherein the interlock device is configured to close to actuate the accelerator interlock means during detection. 5. The interlock device for an automobile according to claim 2, wherein the second relay is a delay relay that is closed after a predetermined time has elapsed since the engine operation detecting means detected the operation of the engine. 6. An automatic door is provided as an automatic door, and an automatic door opening / closing switch for opening and closing the automatic door is provided, and the control means controls the opening operation of the automatic door by the automatic door opening / closing switch when the vehicle is ready to start. The vehicle interlock device according to claim 3, wherein the interlock device is configured to be prohibited.