JP2503787B2 - Floor cleaning car - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaning vehicle.

[0002]

2. Description of the Related Art In a conventional floor cleaning vehicle, a cleaning brush rotating at the bottom of the vehicle sweeps up dust on the floor surface and collects the dust in a dust box provided in the vehicle. The dust floating in the air in the dust box is collected by the blower and collected by the filter. Then, the air is exhausted to the outside of the dust box through the filter.

Further, in order to prevent the filter from being clogged with dust adhering to the filter, a shaker motor provided on the filter is operated by a switch operation,
By vibrating the filter, dust attached to the filter is dropped into the dust box. Then, when the collected dust is accumulated in the dust box to some extent, the dust box is operated by a drive device such as a hydraulic cylinder, and the dust in the dust box is discharged to, for example, a trash box. At this time, if dust adhering to the filter is removed, the dust will not collect in the dust box. Therefore, when the shaker motor is operated by the switch operation while the dust in the dust box is being discharged to the dust box, the dust attached to the filter is discharged to the dust box.

[0004]

However, every time the dust in the dust box is discharged to the dust box, the switch has to be operated to operate the shaker motor, which is very troublesome. The present invention has been made to solve the above problems, and the purpose thereof is to automatically operate a shaker motor to remove dust from a filter when dust in the dust box is being discharged. It is to provide a floor cleaning vehicle that can be discharged to the outside.

[0005]

In order to solve the above problems, the present invention sweeps dust on the floor into a dust box with a cleaning brush rotating at the bottom of a vehicle and floats in the dust box. In a floor cleaning vehicle that draws in dust with a blower, collects the dust with a filter, and discharges only air to the outside of the dust box, the filter vibrating means for vibrating the filter and the dust box by operating the dust box. Discharge driving means for discharging the dust, state detecting means for detecting the operating state of the dust box, and whether or not the dust box is discharging the dust in the dust box based on the detection by the state detecting means Discharge state determining means, and the filter vibrating means at a predetermined time based on the command signal of the discharge state determining means. Further comprising a drive control means for driving and controlling the gist thereof.

[0006]

Therefore, according to the present invention, when the dust box is driven by the discharge driving means to discharge the dust in the dust box to the outside, the state detecting means detects the state thereof, and the discharge state judging means detects the state detecting means. It is determined based on the signal that the dust in the dust box will be discharged. Then
The discharge state determination means outputs a command signal to the drive control means, and the drive control means drives and controls the filter vibrating means for a predetermined time based on the command signal. Therefore, the dust adhering to the filter falls, and the dust can be discharged to the outside of the dust box.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. Referring to FIG. 5, in a known floor cleaning vehicle, dust on the traveling path of the vehicle is swept up by a cleaning brush 1 and sent into a dust box 2 provided in the vehicle. Then, minute floating dust generated when the dust is swept up is sucked by the blower 3 through the filter 5. Then, the dust adheres to the filter 5, and the air passes through the filter 5 and is discharged outside the dust box 2 (outside the vehicle).

The filter 5 is formed by folding it in a corrugated shape in order to enhance the filtering efficiency. After cleaning, the shaker motor 6 as a filter vibrating means is operated to vibrate the filter 5 so that the dust attached to the filter is dropped and collected in the dust box 2. As shown in FIG. 2, the blower 3 is adapted to operate according to an on / off operation (on / off operation) of an ignition switch 9 provided in a driver's seat of a vehicle. When the ignition switch 9 is on, the controller 10 operates. To drive the blower 3. The controller 10 drives the shaker motor 6 when the blower 3 is driven for a predetermined time or longer and the ignition switch 9 is off.

Further, as shown in FIGS. 2 and 5, the dust box 2 is provided in a vehicle, and a hydraulic cylinder 4 as discharge driving means connected to the dust box 2 is driven by a hydraulic pump 11. And the hydraulic cylinder 4
When driven by the hydraulic pump 11, the dust box 2 rotates clockwise around the support shaft 7 as shown in FIG. 6 so that the dust in the dust box can be discharged to the trash box. The hydraulic pump 11 is adapted to be operated according to an on / off operation (on / off operation) of the dust box drive switch 8 provided in the driver's seat, and the controller 1 is operated when the dust box drive switch 8 is on.
0 operates to drive the hydraulic cylinder 4 via the hydraulic pump 11.

Further, as shown in FIG. 5, the vehicle is provided with a limit switch 12 as state detecting means, and the limit switch 12 is pressed by the dust box 2. This limit switch 12 is a dust box 2
It is turned off when it is pressed by, and is turned on when the hydraulic cylinder 4 is driven to rotate the dust box 2 as shown in FIG.

When the dust box 2 is rotated and the dust in the dust box 2 is discharged, the limit switch 12 is turned on. Therefore, the controller 10 drives the shaker motor 6 at this time.
Further, when the limit switch 12 is turned on, the controller 10 stops the blower 3 so that dust adhering to the filter 5 can be easily removed.

Next, the drive circuit of the shaker motor 6 will be described with reference to FIG. FIG. 1 shows an electric circuit for driving the shaker motor 6 in an internal circuit of the controller 10. The shaker motor 6 is connected to a 12V or 24V battery 13 and operates independently of the controller 10 when the shaker motor switch 14 is closed. It is supposed to do. Incidentally, when the ignition switch 9 is turned on, the blower 3 not shown in FIG. 1 is driven, and at this time, the shaker motor switch 14 is held in the off state by a mechanical structure.

The controller 10 is provided with a cumulative timer circuit 15 for measuring the time when the ignition switch 9 is turned on, and its input terminal is connected to the ignition switch 9. Then, when the ignition switch 9 is turned on, the counting operation is performed, and when the ignition switch 9 is turned off, the counting operation is stopped, and when the accumulated count time reaches a predetermined time T1, as shown in FIG. The circuit 15 outputs an H level (high potential) signal to the AND circuit 16 in the next stage.

The ignition switch 9 is also connected to the AND circuit 16 via the inverter 16a, and an ON signal, that is, an H level signal, is inputted to the AND circuit 16 via the inverter 16a as a prohibition input signal which becomes L level. It When an H level signal is output from the cumulative timer circuit 15 and an L level signal is output from the switch 9 by turning off the ignition switch 9, the AND circuit 16 outputs the H level signal to the discharge state of the next stage. It outputs to the OR circuit 17 as a judgment means.

The OR circuit 17 is the AND circuit 1.
Based on the H level signal from 6, the H level signal is output to the motor-on timer circuit 18 of the next stage. Further, the limit switch 12 is also connected to the OR circuit 17, and when the ignition switch 9 is in the ON state, an ON signal, that is, the dust box 2 is rotated upward by the hydraulic cylinder 4, and when the limit switch 12 is turned ON, the H level is set. The signal is input to the OR circuit 17. The OR circuit 17 sets the H level based on the H level signal of the limit switch 12.
The level signal is output to the motor-on timer circuit 18.

As shown in FIG. 4, when the OR circuit 17 outputs an H level signal, the motor-on timer circuit 18 operates the timer circuit to output an H level signal to the transistor 19 of the next stage, and the T2 time is passed. After a lapse of time, an L level (low potential) signal is output. The output signal of the motor-on timer circuit 18 is input to the cumulative timer circuit 15. When the H level signal is input from the motor-on timer circuit 18 and then the L level signal is input to the cumulative timer circuit 15, the cumulative time of the cumulative timer circuit 15 is reset,
An L level signal is output from the cumulative timer circuit 15. The motor-on timer circuit 18 and the transistor 19 constitute drive control means.

The collector of the transistor 19 is connected to the battery 12 via the relay 20, and the changeover switch 2
A voltage of 12V or 24V is supplied by 1. still,
When the battery voltage is 24V, this is 1 at the resistor R
The voltage is stepped down to 2V, and the relay 20 is constantly excited and driven by the voltage of 12V. Then, when the relay 20 is driven, the relay contactor 22 of the a-contact is closed, and the shaker motor 6
Is driven. Incidentally, the protection diode 2
3 is designed to protect the relay 20.

Next, the operation of the floor cleaning vehicle configured as described above will be described. First, the ignition switch 9 is turned on to start the cleaning vehicle, and when cleaning is performed by this cleaning vehicle, the cleaning brush 1 sweeps dust on the floor surface into the dust box 2. On the other hand, when the ignition switch 9 is turned on, the controller 10 turns the blower 3
Is operated to collect the floating dust in the dust box 2 by the filter 5, and the air is discharged to the outside of the vehicle.

Further, when the ignition switch 9 is turned on, the cumulative timer circuit 15 measures the usage time of the cleaning vehicle. Then, when the usage time of the cleaning vehicle exceeds the predetermined time T1, the cumulative timer circuit 15 outputs an H level signal to the AND circuit 16. However, since the ignition switch 9 outputs the L level signal through the inverter 16a, the AND circuit 16 operates as the OR circuit 17 at the next stage.
To output an L level signal.

Thereafter, when the use of the cleaning vehicle is completed and the ignition switch 9 is turned off, an H level signal is input to the AND circuit 16 via the inverter 16a.
As a result, the AND circuit 16 outputs an H level signal to the OR circuit 17, and the OR circuit 17 outputs an H level signal to the motor-on timer circuit 18. Therefore, the motor-on timer circuit 18 outputs an H level signal to the transistor 19 for a predetermined time T2 based on the H level signal from the OR circuit 17.

As a result, the transistor 19 is turned on for the predetermined time T2, so that the relay 20 is excited and driven, and the relay contactor 22 is closed. As a result, the shaker motor 6 is driven and the filter 5 vibrates, so that dust attached to the filter 5 can be dropped into the dust box 2. When an L level signal is output from the motor-on timer circuit 18 after a predetermined time T2, the time measured by the cumulative timer circuit 15 is reset based on this signal and the L level signal is ANDed. Output to the circuit 16. Then, the standby is performed again to newly count the time during which the ignition switch 9 is kept on.

If the ignition switch 9 is turned off before the cleaning vehicle has been used for a predetermined time T1 or more, the amount of dust adhering to the filter 5 that does not need to be removed, that is, the filter 5 may be clogged. Since there is no such amount, the AND circuit 16 does not operate, the shaker motor 6 is not driven, and unnecessary consumption of battery power is avoided. After that, when the cleaning vehicle is started again by turning on the ignition switch 9, this time is added to the time measured last time, and when the total reaches the predetermined time T1, the shaker motor 6 waits for turning off the ignition switch 9 to a predetermined time. Driven for time T2.
Therefore, when a certain amount of dust adheres to the filter 5, dust is removed, and clogging of the filter 5 is reliably avoided.

In addition to the automatic dust removal described above, the operator can operate the shaker motor switch 14 at any time to drive the shaker motor 6 to remove dust from the filter 5. Next, the ignition switch 9 is turned on to start the cleaning vehicle, and when cleaning is performed by this cleaning vehicle, the cleaning brush 1 sweeps dust on the floor surface into the dust box 2. On the other hand, when the ignition switch 9 is turned on, the controller 10 operates the blower 3 to collect the floating dust in the dust box 2 with the filter 5 and discharge the air to the outside of the vehicle.

Then, when the dust swept up in the dust box 2 of the cleaning vehicle is discharged to the trash box, the operator turns on the dust box drive switch 8 and the controller 10 controls the hydraulic pressure via the hydraulic pump 11 based on this ON signal. The cylinder 4 is driven. Then, the dust box 2 rotates clockwise around the support shaft 7 and moves upward to the position shown in FIG. When the dust box 2 starts to rotate and the limit switch 12 is turned on, the controller 10
Stops the blower 3 based on this ON,
An H level signal is output to the OR circuit 17, and the OR circuit 1
7 outputs an H level signal to the motor-on timer circuit 18 based on this H level signal.

Therefore, the motor-on timer circuit 18 outputs an H level signal to the transistor 19 to turn on the relay 20 for a predetermined time T2, and at the same time, the relay contactor 22 is closed to keep the shaker motor 6 for a predetermined time T2. Drive for a while. As a result, the filter 5 is vibrated to remove dust adhering to the filter 5 and the dust box 2
It can be discharged to the trash at the same time as the dust collected inside.

Then, after a predetermined time T2, when the L level signal is output, the drive of the shaker motor 6 is stopped, while the time measurement of the cumulative timer circuit 15 is reset, and the L level signal is sent to the AND circuit. Output to 16.
Further, since the ignition switch 9 is turned on at this time, the usage time of the cleaning vehicle is newly measured, and after the predetermined time T1 has elapsed, the dust is removed from the filter 5 by waiting for the ignition switch 9 to be turned off. Done by.

As described above, if only the dust box drive switch 8 is turned on to discharge the dust in the dust box 2 to the trash box, the shaker motor 6 is automatically driven and the filter 5 vibrates. The dust on the filter 5 can be automatically discharged to the trash box at the same time that the dust on the filter is discharged to the trash box. As a result, it is possible to easily operate the cleaning vehicle,
The maintenance of the filter 5 can be facilitated.

[0028]

As described above in detail, according to the present invention, the shaker motor automatically operates to remove the dust from the filter while the dust in the dust box is being discharged, and the dust is discharged to the outside. There is an excellent effect that can be.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing a part of a controller for driving and controlling a shaker motor.

FIG. 2 is a block diagram showing an outline of an electrical configuration of a floor cleaning vehicle.

FIG. 3 is a waveform diagram showing characteristics of a cumulative timer circuit.

FIG. 4 is a waveform diagram showing characteristics of a motor-on timer circuit.

FIG. 5 is an overall side view simply showing a floor cleaning vehicle.

FIG. 6 is an explanatory diagram showing a state where a dust box is moved upward by a hydraulic cylinder.

[Explanation of symbols]

1 ... Cleaning brush, 2 ... Dust box, 3 ... Blower, 4
... hydraulic cylinder as discharge driving means, 5 ... filter, 6 ... shaker motor as filter vibrating means,
12 ... Limit switch as state detecting means, 17 ...
OR circuit as discharge state determination means, 18 ... Motor on-timer circuit as drive control means, 19 ... Transistor as drive control means

Claims (1)

(57) [Claims] 1. A dust brush on the floor is swept up into a dust box by a cleaning brush rotating at the bottom of a vehicle, and dust suspended in the dust box is drawn by a blower, and the dust is filtered by a filter. In a floor cleaning vehicle that collects and discharges only air to the outside of the dust box, a filter vibrating unit that vibrates the filter, a discharge driving unit that operates the dust box to discharge the dust in the dust box, and an operating state of the dust box State detection means, a discharge state determination means for determining whether or not the dust box is discharging dust in the dust box based on the detection of the state detection means, and a command signal for the discharge state determination means Drive control means for controlling the drive of the filter vibrating means for a predetermined time based on Floor cleaning car.