JPS5921070Y2 - Horn control device for large vehicles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a horn control device for a large vehicle, which is installed on the left side of a large truck, bus, etc., and emits a warning sound to passersby when the vehicle turns left.

Conventionally, drivers of trucks, etc. have checked the side view through the left window and left side mirror when making a left turn, but this still creates a blind spot and is dangerous for cyclists and pedestrians passing on the left side. Accidents involving rear wheels have been occurring one after another.

For this reason, recently, devices have begun to be commercially available that are equipped with a buzzer or chime on the left side of a truck or the like to alert pedestrians passing by.

One type of this device has a relay installed in parallel with the left turn indicator light, and the chime is energized through the relay.

Therefore, if the driver operates the turn signal switch to the left turn side, a warning sound will be automatically emitted while the left turn indicator light is flashing, but the vehicle will be temporarily stopped on the left edge of the road. In addition, the left turn signal lights are flashed for following vehicles, and the warning sound is turned off while buses are picking up and dropping off passengers at the bus stop, causing noise pollution to nearby residents. It could happen.

This also has the disadvantage that passengers on the bus may miss the destination information, and the bus driver may miss sounds from outside.

In view of the above-mentioned problems, the present invention automatically and indirectly stops the sounding of the horn by the driver's various operations inside the vehicle.
It is an object of the present invention to provide a horn control device for a large vehicle which generates as little noise as possible when unnecessary without requiring cumbersome operations.

Embodiments of the device of the present invention will be described below with reference to the drawings.

In FIG. 1 showing the first embodiment, numeral 1 denotes a flasher relay, which is a well-known type having contacts that are turned on and off intermittently.

2 is a turn signal switch, which in this case is operated by the driver.

3 is a right turn direction indicator, 4 is a left turn direction indicator, 6 is a battery, 7 is a diode, and 8 is a chime, all of which are well known.

Reference numeral 9 denotes a door opening operation switch that is turned on when a boarding or disembarking door of a bus is opened, for example, a switch that is linked to a limit switch provided on a vehicle door or an operation switch for opening and closing a vehicle door. It is a means.

The door opening activation switch is closed while the door is open.

The switch 9 may be an activation switch means of external broadcasting equipment in a bus that broadcasts a light guide to the outside of the bus when the door is opened.

10 is a first relay coil, and 11 is a second relay coil, which are wound in the same phase as the first relay coil 10.

12 is a relay contact, and the first and second relay coils 10. ．． 1
1 is driven by one of the magnetomotive forces.

In the first embodiment, the turn signal switch 2
When the switch is inserted into the left side, current flows through the battery 6, the key switch 5, the flasher relay 1, the turn signal switch 2, and the left turn indicator light 4, causing the left turn indicator light 4 to blink.

At the same time, a weak current flows through the first relay coil 10, the diode 7, and the coil filament of the right turn indicator light 3, which is turned off, so the relay contact 12 turns on and off, causing the chime 8 to emit an intermittent sound (for example, a sharp cone sound). Occur.

When the vehicle door is opened, the door switch 9 is closed and the second relay coil 11 is energized, so the relay contact 12 remains on and the sound frame of the chime 8 is activated by the first relay coil 10.
Even if the chime 8 is no longer energized, it continues to be attracted to the electromagnetic coil inside the chime, and the chime 8 stops sounding.

Note that 13 is a door footlight or an external broadcasting device, which is energized at the same time as the door is opened, and may be connected as necessary.

Also, the cathode side of the diode 7 is grounded through the right turn direction indicator light 3 for the right turn and left turn omnidirectional indicator lights 3,
This is to prevent the chime 8 from sounding during a buzzard operation in which the lights 4 flash simultaneously, and in this buzzard operation, both the right turn and left turn indicator lights 3 and 4 are simultaneously energized by the flasher relay 1 by a buzzard switch (not shown). It is something that

Also, chime 8 has a pair of sound plates and a sound frame by hitting them.
This is a well-known device that includes an electromagnetic coil that drives the sound frame and a spring that returns the sound frame.

Also, 9a. 9b is a terminal of the door switch 9, which serves as a cancel switch means.

Next, FIG. 2 showing a second embodiment will be explained.

The difference from the first embodiment is that only one relay coil is used,
The number of diodes and wiring have been changed.

In the second embodiment, when the door switch 9 is turned on, the relay coil 10 connects the door switch 9, the diode 14,
The current flowing through the relay coil 10 and the coil filament of the right turn direction indicator light 3 causes the current to flow freely, causing the relay contact 12 to remain on, and the chime 8 to stop sounding.

Note that the other details are the same as in the first embodiment.

Next, FIG. 3 showing a third embodiment will be described.

The third embodiment has the same electric circuit as the first and second embodiments, except that a vehicle speed responsive switch means is used as the cancel switch means.

In FIG. 3, reference numeral 16 is a speedometer, which is a vehicle speed detection device installed in the vehicle.

Reference numeral 9C denotes a switch means that is turned on and off according to the movement of the pointer 16a of the speedometer 16, and is constituted by, for example, a proximity switch that detects the position of the pointer 162.

As described above, providing a vehicle speed responsive switch means in the speedometer 16 has already been done and is well known, so that technology can be utilized.

In the third embodiment, the vehicle speed is substantially O(k
m/h), the vehicle speed-responsive switch means, which serves as a cancel switch means, is turned on.

Next, a fourth embodiment will be described with reference to FIG.

17 is a lever that is pulled up when operating the band brake, and 9d is a limit switch that is turned on when the lever is pulled up and serves as a band brake responsive switch means, and is used to light up a band brake activation warning lamp that is normally provided on the instrument panel. Since it is already installed as a limit switch, this switch can be used as a cancel switch means.

The rest is the same as the third embodiment. Next, FIG. 5 showing the fifth embodiment will be explained.

18 is a clutch lever 19e that operates the clutch of the vehicle.
is a neutral detection switch that detects the displacement of the clutch lever 18 and turns on when the clutch is in the neutral position, and can be configured using a limit switch, proximity switch, or slide switch, and any known one can be used. can.

The rest is the same as the third embodiment. As described above, the electric circuits illustrated in the description of the first and second embodiments can be used in the third to fifth embodiments, but various other electric circuits can be used, for example, Connecting the signals from the different types of cancel switch means explained in each of the above embodiments to an OR circuit or an AND circuit,
The output signals of these circuits can control the relay to stop the chime from sounding.

Further, it goes without saying that the cancel switch means may be a non-contact element.

For example, if a normally closed contact is used as the cancel switch means, the relay contact 12 shown in FIG. 1 may be opened by using the normally closed contact to cut off the excitation current of the relay coil.

Further, in the case where the chime is energized directly from a flasher relay without using a relay, the current flowing to the chime may be directly interrupted by a cancel switch means.

In addition to the chime, a buzzer or the like can be used as the alarm, and the volume of the chime or buzzer may be switched to be strong or weak depending on whether it is day or night.

In addition, if a normally open contact is used as the cancel switch means, it can be used with various existing switches (e.g. door opening/closing relay contact,
This has the advantage that it is easy to use a band brake responsive switch, etc.

As described above, the present invention can detect when a large vehicle is stopped and automatically shut off the warning sound that is emitted when turning left, which eliminates the driver's complicated operations and reduces noise pollution. This has a great effect.

[Brief explanation of the drawing]

1 and 2 are electric circuit diagrams showing the first and second embodiments of the device of the present invention, and FIGS. 3 to 5 are cancel switch means used in the third to fifth embodiments of the device of the present invention. FIG. 2...Turn signal switch, 3...
・Right turn direction indicator light, 4...Left turn direction indicator light, 8
・・・・・・Alarm bell, 9.9C, 9d, 9e・・・・・・
・Door opening activation switch means 9, vehicle speed responsive switch means 9C, band brake responsive switch means 9d, and neutral detection switch means e0, which serve as cancel switch means, respectively.

Claims (5)

[Scope of utility model registration request] (1) A turn signal switch that is operated by a driver when a large vehicle turns left or right, and a right turn direction indicator light and a left turn direction indicator light that are provided on the large vehicle and selectively flash by operating the turn signal switch. ,
A horn installed on the large vehicle that emits an intermittent warning sound when the left turn direction indicator light is intermittently energized; and a horn that stops sounding when the large vehicle detects a stopped state. 1. A horn control device for a large vehicle, characterized in that it is equipped with a cancel switch means for canceling the alarm. (2) The horn for a large vehicle as set forth in claim 1 of the utility model registration claim, wherein the cancel switch means is comprised of a door opening activation switch means that is activated when the boarding or disembarking door is opened. Control device. (3) The large-sized vehicle according to claim 1, wherein the cancel switch means is a vehicle speed-responsive switch means operated by a signal from a vehicle speed detection device that detects the vehicle speed of the large-sized vehicle. alarm control device. (4) The horn control device for a large vehicle as set forth in claim 1, wherein the cancel switch means comprises a band brake response switch means that is activated when the band brake is operated. (5) The alarm controller for a large vehicle according to claim 1, wherein the cancel switch means comprises a neutral detection switch means that is activated when the clutch is operated to the neutral position. .