JPH0519551Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an engine stopping device that stops the engine by operating a stop switch located on the trunk of an automobile and cutting off the circuit that supplies power from the battery to the ignition coil via the key switch in the driver's cab.

[Prior art]

For example, a stop switch that can stop the engine by remote control is provided on a cargo platform that is movable up and down relative to the main body of an automobile.

This means that when carrying out work by raising the loading platform with the engine running, it is recommended to stop the engine by remote control from above the loading platform in order to save fuel and prevent noise during this work. This is because it is convenient.

FIG. 2 shows an example of a circuit constituting a conventional engine stop device.

In the figure, a power switch 3 and a stop switch 4 are interposed in series in a circuit that supplies power from a battery 2 to an ignition coil (not shown) via a key switch of an ignition key 1. The power switch 3 is provided in the driver's cab,
The stop switch 4 is provided on the loading platform.
The contact 5 of the power switch 3 and the contact 6 of the stop switch 4 are connected, and the contact 7 of the power switch 3 and the contact 8 of the stop switch 4 are connected, respectively.

Therefore, when the power switch 3 and the stop switch 4 of the conventional engine stop device configured as described above are in the state shown in FIG. 2, for example, it is possible to supply electric power from the battery 2 to the ignition coil. be.

Then, in order to notify the operator of this state, a confirmation lamp 9 provided in the operator's cab lights up.

When the ignition key 1 is operated in the above-described state to operate the starter, the engine is operated.

When attempting to stop the engine from above the loading platform, operate the stop switch 4 and switch contacts 6 to 8 to cut off the power supply circuit from the battery 2 to the ignition coil and stop the engine. Stop.

[The problem that the idea attempts to solve]

In the above conventional engine stop device, after stopping the engine from above the loading platform as described above, when attempting to restart the engine by operating the ignition key 1 in the driver's cab,
First, check the confirmation lamp 9. If the confirmation lamp 9 is not lit, operate the power switch 3,
For example, in addition to switching from contact point 5 to contact point 7, the ignition key 1 must also be operated. As a result, power can be supplied from the battery 2 to the ignition coil, the confirmation lamp 9 lights up, and the engine can be restarted.

However, when the operation according to the above procedure is performed, the confirmation lamp 9
This necessitates extra operations such as checking the power supply switch 3 and operating the power switch 3, which is very troublesome for the operator.

Therefore, the purpose of this invention is to easily restart the engine by simply operating the ignition key, without having to check the confirmation lamp or operate the power switch as in the case of conventional devices. The objective is to provide an engine stop device that can stop the engine.

[Means to solve the problem]

In order to achieve the above object, the main means adopted by the present invention is to operate a stop switch installed on the cargo bed of the automobile, and to connect the battery to the ignition coil via the key switch in the driver's cabin. In an engine stop device configured to stop the engine by interrupting a circuit that supplies power, the stop switch is configured to have a self-returning normally closed contact, and the stop switch is configured to have a self-returning normally closed contact to supply power to the ignition coil. A normally open contact of the relay is interposed in the circuit, and a holding circuit is formed to operate the relay by operating the key switch to the starter start position, and a normally closed contact of the stop switch is interposed in this holding circuit, and the normally closed contact of the stop switch is interposed in the holding circuit. This engine stop device is configured to interrupt the holding circuit and release the holding of the relay by operating a stop switch on the loading platform.

[Effect]

Since the engine stop device according to the present invention is configured as described above, when stopping the engine from above the loading platform, by operating the stop switch, the holding of the relay is released and the engine is stopped.

When attempting to restart the engine from within the driver's cab, operating the key switch forms a holding circuit that activates the relay, and power is supplied to the ignition coil through the contacts of the relay. . As a result, the engine can be restarted.

〔Example〕

Embodiments embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. still,
The following example is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.

Here, FIG. 1 is a circuit diagram of an engine stop device according to an embodiment of the present invention.

The engine stop device according to this embodiment includes a relay contact in a circuit that supplies power to an ignition coil, and also forms a holding circuit that operates the relay by operating a key switch of an ignition key. The relay is configured to be released from holding by operating the upper stop switch.

That is, as shown in FIG. 1, an a contact _11a of a first relay 11 is interposed in a circuit 10 that supplies power from a battery 2 to an ignition coil (not shown) via an ignition key 1.

A drive coil 11 _b that operates the first relay 11 is a circuit 1 that supplies power from a battery 2 to a starter (not shown) via the key switch of the ignition key 1 when the key switch is operated.
Connected to 2.

A drive coil 13 _b that operates the second relay 13 is connected to the circuit 12 . The a contact _13a of this second relay 13 is connected to the circuit 10.
A circuit 14 is interposed for supplying power from the first relay 11 to the drive coil 11 _b of the first relay 11 and the drive coil 13 _b of the second relay 13 .

In this case, the circuits 12 and 14 and the second relay 13 form a holding circuit that operates the first relay 11 when the ignition key 1 is operated.

A self-resetting stop switch 15 having _a b contact _15b is interposed on the ground side of the drive coil 11b of the first relay 11. The stop switch 15 is for releasing the holding circuit that operates the first relay 11, and
It is placed on a loading platform (not shown).

The engine stop device according to this embodiment is configured as described above.

Subsequently, the operation of the engine stop device will be explained.

First, by operating the ignition key 1, electric power from the battery 2 is supplied to the drive coil _11b of the first relay 11 and the drive coil _13b of the second relay 13 via the circuit 12. Then, the a contact _11a of the first relay 11 is closed, and power is supplied from the battery 2 to the ignition coil via the ignition key 1. At this time, since the a contact _13a of the second relay 13 is also closed, even after the contact of the ignition key 1 is opened, the power from the battery 2 is passed through the circuit 14 to the first relay 11. and the drive coil 13 _b of the second relay ₁₃ . As a result, the a contacts 11 _a and 13 _a of the first relay 11 and the second relay 13 are held, and a state in which power can be supplied to the ignition coil is maintained.

Then, by operating the ignition key 1, the starter is driven and the engine is operated.

On the other hand, when stopping the engine from above the loading platform, by operating the stop switch 15, b
The contact _15b is opened and the power supply circuit to the drive coil _11b of the first relay 11 and the drive coil _13b of the second relay 13 is cut off. Then,
The holding of the first relay 11 and the second relay 13 is released, and the a contact 1 of the first relay 11 is released.
1 _a is released. As a result, the power supply circuit to the ignition coil is cut off and the engine is stopped.

At this time, since the stop switch 15 is of a self-resetting type, after the operation of the stop switch 15 is completed, the stop switch 15 self-returns and the b contact _15b is closed again.

When the engine is to be restarted from the driver's cab, a holding circuit is formed to operate the first relay 11 by operating the ignition key 1 according to the procedure described above. Power is supplied to the ignition coil through the a contact _11a of the relay 11. As a result, the engine can be restarted.

Therefore, in the engine stop device configured as described above, the engine stop device can be stopped by simply operating the ignition key 1 without checking the confirmation lamp 9 or operating the power switch 3 as in the case of the conventional device (see Fig. 2). The engine can be restarted easily.

Note that in the above embodiment, the second relay 13
is omitted, and the a contact 13 of this second relay 13 is
By interposing _another contact a of the first relay 11 in place of the contact a, a self-holding circuit for operating the first relay 11 can be constructed.

[Effect of idea]

As mentioned above, this invention stops the engine by operating a stop switch located on the vehicle's loading platform and interrupting the circuit that supplies power from the battery to the ignition coil via the key switch in the driver's cabin. In the engine stop device, the stop switch is configured to have a self-resetting normally closed contact, a normally open contact of a relay is interposed in the circuit that supplies power to the ignition coil, and the key switch is configured to have a normally closed contact. A holding circuit is formed that activates the relay when the starter is operated to the starting position, a normally closed contact of the stop switch is interposed in this holding circuit, and the holding circuit is cut off by operating the stop switch on the loading platform. This engine stop device is characterized by releasing the hold on the relay when the engine stops, so you can operate the ignition key without checking the confirmation lamp or operating the power switch as in the case of conventional devices. You can easily restart the engine by simply pressing the button.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an engine stop device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional engine stop device. Explanation of codes, 1...Ignition key, 2...
Battery, 10, 12, 14...Circuit, 11...
First relay, 13...Second relay, _11a ,
_13a ...A contact, _11b , _13b ...drive coil,
15...Stop switch, 15 _b ...B contact.

Claims (1)

[Scope of utility model registration request] An engine stop device that stops an engine by operating a stop switch located on the cargo bed of a vehicle and interrupting a circuit that supplies power from a battery to an ignition coil via a key switch in the driver's cabin. The stop switch is constructed with a self-returning normally closed contact, and a normally open contact of a relay is interposed in the circuit that supplies power to the ignition coil, and when the key switch is operated to the starter starting position. A holding circuit is formed to operate the relay, and a normally closed contact of the stop switch is interposed in this holding circuit, and when the stop switch on the loading platform is operated, the holding circuit is cut off and the holding of the relay is released. An engine stop device characterized by: