JP2002360480A - Self-propelled cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To not only ensure operations of a sensor for detecting a distance, a heat source, etc., by transmitting/receiving light (infrared rays), so as to enhance traveling performance, but also reduce costs by simplifying a structure of an outer hull, in a self-propelled cleaner whose cleaner body has a self-propelling function and which automatically cleans a surface to be cleaned. SOLUTION: Dust, which adheres onto the surface to be cleaned from a suction part 3, is taken in by an airflow for taking in the dust, which is generated by a motor fan 4; the taken-in dust is collected in a dust collection part 5; the cleaner body 1 is made to travel by a roller 11 driven by a drive motor 8; and the motor fan 4 and the drive motor 8 are powered from a power source part 6. The cleaner body 1 includes the motor fan 4, the collection part 5, the source part 6, etc., makes the outer hull 20 transparent or translucent, and includes a distance measuring sensor 9 and a step sensor 10, which optically detect the distance to an obstacle, the heat source, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled cleaner having a self-propelled function in a cleaner body and automatically cleaning a surface to be cleaned.

[0002]

2. Description of the Related Art Conventionally, a self-propelled vacuum cleaner of this type has a structure in which a flow of air sucking dust generated by an electric blower is used.
The suction unit suctions dust adhering to the surface to be cleaned, and the suction unit collects the dust in the dust collection unit. And a plurality of sensors for detecting the pressure, a cleaner main body is configured, and the cleaner main body is configured to be able to travel by rollers driven by a drive motor.

In the self-propelled vacuum cleaner constructed as described above, when the power switch provided on the cleaner body is turned on and the start switch is turned on to start the operation, the electric blower is driven,
Straight running is started by a roller driven by a drive motor. While traveling, measure the distance to obstacles such as furniture with multiple sensors, further confirm the steps on the surface to be cleaned, run around obstacles and steps, and at the same time, air generated by the electric blower With the flow, dust adhering to the surface to be cleaned is sucked from the suction portion, and the surface to be cleaned is automatically cleaned.

[0004]

In such a conventional configuration, the main body of the cleaner is covered with an outer shell, and since the outer shell is opaque, light (infrared rays) from a plurality of sensors for detecting distances is transmitted and received. In order to do this, it is necessary to make the passage of light (infrared light) transparent,
There was a problem that the cost was high. In addition, there is a problem that the display function for the user is not enhanced and the usability is not good. In addition, there is a problem that emergency stop means is not sufficient and safety is lacking.

The present invention has been made to solve the above-mentioned conventional problems, and ensures the operation of a sensor for detecting a distance and a heat source by transmitting and receiving light (infrared rays), thereby improving running performance and simplifying the structure of an outer shell. To reduce costs. Further, it is another object of the present invention to provide a self-propelled cleaner having high usability and enhanced safety measures.

[0006]

In order to achieve the above object, the present invention provides a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and the electric blower. A dust collection unit that collects dust sucked in by the above, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit that supplies power to the drive motor, the cleaner body includes: A self-propelled vacuum cleaner including the electric blower, the dust collection unit, the power supply unit, and the like, and a transparent or translucent outer shell, and a sensor that optically detects a distance to an obstacle, a heat source, and the like. is there.

[0007] This makes it possible to reliably operate a sensor for detecting a distance, a heat source, and the like by transmitting and receiving light (infrared rays), to travel while avoiding an obstacle or the like, and to improve traveling performance. In addition to this, the structure of the outer shell can be simplified and the cost can be reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and the electric blower. A dust collection unit for collecting the sucked dust, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor, the cleaner body includes: The electric blower, the dust collecting unit, including a power supply unit and the outer shell is transparent or translucent, and the distance to the obstacle, optically includes a sensor for detecting a heat source, etc., the distance,
Transmitting and receiving light (infrared rays) from a sensor that detects a heat source, etc., can be performed through the outer shell, and the sensor can be operated reliably. can do. Further, the cost can be reduced by simplifying the outer structure.

According to a second aspect of the present invention, in the first aspect of the present invention, display means for displaying a detection state by a sensor and / or an operation state of an electric blower, a drive motor, or the like is provided. The detection state of the distance and the heat source by the sensor and / or the operation state of the electric blower, the drive motor, and the like can be displayed and visually recognized.

According to a third aspect of the present invention, in the second aspect of the present invention, the display means includes a first display means for displaying a detection state by a sensor, and an operation state of an electric blower, a drive motor and the like. The first display means and the second display means respectively display a distance detected by a sensor, a detection state of a heat source, and an operation state of an electric blower, a drive motor, and the like. In addition, one of the first display means and the second display means can display a detection state of a distance or a heat source by a sensor and an operation state of an electric blower, a drive motor, or the like.

According to a fourth aspect of the present invention, there is provided a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collecting unit, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor, and a caster for supporting the cleaner body in a freely movable manner,
The center of gravity of the cleaner body is located between the casters and the rollers, such as when the cleaner body is carried by the handle, and is installed on the floor from a state where the cleaner body is suspended by the handle. In this case, since the roller comes in contact with the floor surface first, a large force is not applied to the suction portion when the cleaner body is installed on the floor surface, so that damage to the suction portion can be prevented.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the power supply unit is provided behind the roller. Since the power supply unit is heavy, it is provided behind the roller. The center of gravity of the cleaner body may be located between the casters and the rollers.

According to a sixth aspect of the present invention, there is provided a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collector, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor, and a control device for controlling operations of the electric blower, the drive motor, and the like. The electric blower, the drive motor, a ground wire connected to at least one of the control device is connected to a negative terminal of a power supply unit made of a battery, by connecting the ground wire to the negative terminal of the power supply unit, When static electricity or a strong electric field is applied, destruction by static electricity or a strong electric field can be prevented.

According to a seventh aspect of the present invention, in the above-mentioned sixth aspect, a metal chassis for mounting the drive motor is provided, and a ground wire connected to at least one of the electric blower, the drive motor, and the control device. Is connected to the negative terminal of the battery via the chassis, and the ground wire is connected to the negative terminal of the power supply unit via the chassis. Can be prevented.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the sensor for optically detecting a distance, a heat source, and the like is disposed at a corner portion viewed from the upper surface of the cleaner body. And the step sensor etc. is the surface to be cleaned (floor surface)
In order to detect the step, it is necessary to provide the cleaner diagonally downward, but by arranging it at a corner viewed from the top surface of the cleaner body, the cleaner can be provided with effective use of space.

According to a ninth aspect of the present invention, there is provided a suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to drive the cleaner body, and a power supply unit for supplying power to the electric blower and the drive motor, wherein the dust collection unit is provided in a removable dust box and the dust box. The dust box is configured to be attached to the filter and filters the dust, so that the dust box can be taken out from a place other than the front of the cleaner body.When the dust box is taken out, even if the cleaner body runs out, Thus, safety can be improved without hitting the person taking out the dust box.

The invention according to claim 10 is the ninth invention.
In the invention described in the above, the dust box is mounted immediately above the suction part, the hose connecting between the dust box and the suction part can be shortened, the structure can be simplified, and the dust box can be easily taken out. Even if the vacuum cleaner body runs out while the dust box is being taken out, it does not hit the person taking out the dust box.

According to the eleventh aspect of the present invention, there is provided the ninth aspect.
Or the dust box detection switch for detecting the presence or absence of a dust box, wherein when the dust box is not mounted, at least the electric blower is stopped by the dust box detection switch, and the dust box is mounted. In the absence state, at least the electric blower is stopped, so that dust is not sucked in and it can be kept clean.

According to the twelfth aspect of the present invention, there is provided the ninth aspect.
The invention according to any one of Items 1 to 11, wherein at least one of the dust box and the filter is subjected to a flame retardant treatment,
Even when inhaling high-temperature dust such as a lit cigarette, safety can be ensured.

According to a thirteenth aspect of the present invention, there is provided a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collector, a roller driven by a drive motor to drive the cleaner body, and a power supply unit for supplying power to the electric blower and the drive motor, wherein the power supply unit includes a battery pack containing a plurality of batteries. In addition, the exhaust of the electric blower hits the battery pack, and the battery pack can be cooled by the exhaust of the electric blower, and the temperature rise of the battery can be reduced.

According to a fourteenth aspect of the present invention, there is provided a suction unit for sucking dust adhered on a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor,
A bumper provided on an outer periphery of the cleaner body to prevent damage to furniture, wherein exhaust of the electric blower is discharged from between the bumper and the cleaner body, and the bumper is a cleaner body. Is provided over substantially the entire circumference of the cleaner, and the exhaust of the electric blower can be dispersed and discharged over substantially the entire circumference of the cleaner body. It is possible to eliminate the adverse effects of exhaust on certain furniture and the like.

According to a fifteenth aspect of the present invention, in the first aspect,
In the invention described in 4, the exhaust of the electric blower is exhausted from the upper surface of the cleaner main body, and the exhaust of the electric blower hits furniture and the like near the travel path of the cleaner main body. Therefore, it is possible to eliminate the adverse effect of the exhaust.

According to a sixteenth aspect of the present invention, there is provided a suction portion for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor,
And a third display means for performing a display operation, wherein the third display means performs a display operation when the vacuum cleaner main body is stopped, and while driving while sucking dust by an electric blower, When it stops for some reason, the position of the cleaner main body can be notified by the display of the third display means.

According to a seventeenth aspect of the present invention, there is provided a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor,
A panel switch having a function of displaying characters and the like and a function of turning off when touched is provided, and at least the drive motor is stopped by the panel switch, for example, by displaying `` pause '' on the panel switch By doing so, when it is necessary to stop the vehicle urgently, such as in an emergency, at least the drive motor can be stopped by touching the panel switch, and safety in an emergency can be ensured.

The invention according to claim 18 is an electric blower,
A dust collector, including a cleaner body including a control device, and a metal chassis to which a drive motor for driving a roller that drives the cleaner body is attached, and the cleaner body is mounted above the chassis; A spring is provided between the chassis and the cleaner body to constantly urge the cleaner body upward.Since the cleaner body is mounted above the chassis via the spring, the spring is provided with a damper. It fulfills a function and does not transmit vibration or impact when the cleaner main body is run by the roller to the cleaner main body, in particular, the control device, thereby improving reliability.

According to the nineteenth aspect of the present invention, there is provided the first aspect of the present invention.
8. The invention according to claim 8, further comprising a weight detection switch which is turned off when a predetermined weight is applied, wherein at least a drive motor is stopped by the weight detection switch when a weight greater than a predetermined value is applied to the cleaner body. Things,
When a person weighs more than the specified value, such as when a person rides on the cleaner body, at least the drive motor is stopped to notify the user of an abnormal condition, thereby ensuring safety. Can be secured.

According to a twentieth aspect of the present invention, there is provided a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to run the cleaner body, the electric blower, a power supply unit for supplying power to the drive motor,
A bumper that prevents damage to furniture and moves when it comes into contact with an obstacle such as furniture, and a control device that controls operations of the electric blower, a drive motor, and the like by movement of the bumper, wherein the bumper includes: 10mm from floor
It is located at a distance of at least 10 m from the floor.
When there is an obstacle at a distance of m or more, the obstacle is hit by the bumper, and the electric blower, the drive motor, and the like are stopped by the control device. On the other hand, if the surface to be cleaned is a carpet, it may be necessary to prevent the electric blower, the drive motor, etc. from stopping when the carpet hits the bumper. By disposing, it is possible to prevent the operation of the carpet from being affected.

According to a twenty-first aspect of the present invention, there is provided the second aspect of the present invention.
In the invention described in Item 0, the bumper is 100
mm, and a switch such as a stove placed on the floor (cleaning surface) is at a position higher than 100 mm above the floor. Therefore, even if the bumper hits a stove or the like during traveling, the switch is not turned on by the bumper, and safety can be ensured.

According to a twenty-second aspect of the present invention, a suction portion for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and collecting dust sucked by the electric blower. A dust collection unit, a roller driven by a drive motor to drive the cleaner body, and a power supply unit for supplying power to the electric blower and the drive motor, and detects a step on the floor near both ends of the suction unit. A step detecting switch to be provided, at least the drive motor is stopped by the step detecting switch, and when there is a step on the floor surface, the step detecting switch can surely detect the step, and the step is concave. In the case where there is a step, it is possible to prevent the vacuum cleaner main body from falling on the concave step.

[0030] The invention described in claim 23 is the above-mentioned claim 2.
In the invention described in 2, the step detection switch has a rotatable first roller body abutting on a surface to be cleaned, and a detection unit for detecting rotation of the first roller body is provided. It is designed to detect the running state,
When running the cleaner body with the roller driven by the drive motor, if the roller slips, despite the drive motor and roller rotating,
The cleaner itself does not run. At this time, since the running state of the cleaner body can be detected by detecting the rotation of the first roller body, the cleaner body does not run even though the drive motor and the rollers are rotating. Problems can be eliminated.

According to a twenty-fourth aspect of the present invention, there is provided a suction part having a rotary nozzle for scraping up dust adhering to the surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and a suction by the electric blower. A dust collector for collecting dust, a roller driven by a drive motor to run the cleaner body, a power supply unit for supplying power to the electric blower and the drive motor, and a substantially central front portion of the suction unit; A safety switch having a sliding portion is provided, and at least the rotary brush is stopped by the safety switch. In the case of an abnormality such as the vacuum cleaner main body being inclined and the suction portion being separated from the floor surface, safety is provided. By stopping at least the rotating brush by the switch, safety can be improved.

[0032] The invention described in claim 25 is the second invention.
In the invention described in 4, the sliding portion of the safety switch has a rotatable second roller body abutting on the surface to be cleaned,
Detecting means for detecting the rotation of the second roller body is provided to detect the running state of the cleaner body, and when the cleaner body is running by a roller driven by a drive motor, When the roller slips, the cleaner main body does not run despite the rotation of the drive motor and the roller. At this time, since the traveling state of the cleaner body can be detected by detecting the rotation of the second roller body, the cleaner body does not travel even though the drive motor and the rollers are rotating. Problems can be eliminated.

[0033] The invention described in claim 26 is the second invention.
In the invention described in 3 or 25, the safety switch comprises:
Since it also serves as a step detecting switch, the configuration can be simplified and the cost can be reduced.

[0034]

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

(Embodiment 1) As shown in FIGS. 1 and 2, a vacuum cleaner main body 1 is provided with a suction portion 3 having two rotating brushes 2 on a front bottom portion, and the rotating brush 2 is used to form a suction surface 3 on a surface to be cleaned. It is configured to scrape up the attached dust. The electric blower 4 generates a flow of air that sucks dust, and communicates with the suction unit 3 via the dust collection unit 5.
Thus, dust sucked from the suction unit 3 is collected in the dust collection unit 5.

The power supply unit 6 comprises a battery pack 7 containing a plurality of rechargeable secondary batteries, and supplies power to the electric blower 4 and a drive motor 8 described later. Distance measuring sensor (sensor)
Numeral 9 measures the distance by irradiating light (infrared light) and irradiating the reflected light reflected by an obstacle such as furniture, and the distance is measured in front, side, and rear of the cleaner body 1, respectively. A plurality is provided. The level difference sensor (sensor) 10 detects a level difference on the surface to be cleaned (floor surface), and is configured in the same manner as the distance measuring sensor 8 described above, and as shown in FIG. It is provided diagonally downward.

The rollers 11 are for driving the cleaner main body 1, and are provided on the left and right sides of the cleaner main body 1, and are independently driven left and right by a drive motor 8 mounted on a metal chassis 12, as shown in FIG. Is done. The drive motor 8 is constituted by a geared motor having a built-in reduction gear (not shown). The casters 13 support the cleaner main body 1 so that it can run freely.

The panel switch 14 has a function of displaying characters and the like, and has a function of turning on and off when touched, and is provided on the upper surface of the cleaner body 1. The first display means 15 displays the detection state of the distance measuring sensor 9 and the level difference sensor 10, and is constituted by a light emitting diode, and is provided above the level difference sensor 10 provided at a corner portion of the cleaner body 1. . The second display means 16 is for displaying the operation state of the electric blower 4, the drive motor 8, and the like, and is provided on the upper surface of the cleaner body 1. The third display means 17 displays when the cleaner main body 1 is stopped, and is provided on the upper surface of the cleaner main body 1.

It is to be noted that either one of the first display means 15 and the second display means 16 detects the state detected by the distance measuring sensor 9 and the level difference sensor 10 and the electric blower 4 and the drive motor 8.
The operation state such as the operation state may be displayed. Also,
The first display means 15 may be provided on the upper surface of the cleaner body 1.

The panel switch 14, the first display means 15, the second display means 16, and the third display means 1
Reference numeral 7 is connected to a control device 18. When the user touches the panel switch 14, the operation of the electric blower 4, the drive motor 8, and the like is controlled by the control device 18, and the electric blower 4 sucks dust. , While being automatically driven by the rollers 11 driven by the drive motor 8,
By touching a predetermined portion of the panel switch 14 at the time of emergency during automatic traveling, at least the drive motor 8 is stopped. Reference numeral 19 denotes a power switch.

The cleaner body 1 includes a suction section 3, an electric blower 4, a dust collection section 5, a power supply section 6, a drive motor 8, a distance measuring sensor 9, a level difference sensor 10, a control device 18, and the like. Covered with 20. For this reason, the distance measuring sensor 9 and the step sensor 10 transmit and receive light (infrared rays) through the outer shell 20, and the step sensor 10 is provided obliquely downward at the corner of the cleaner body 1. Light (infrared rays) is transmitted and received through the protruding portion 21 having a part protruding. Note that the outer shell 20 may be translucent.

A bumper 22 made of an elastic material is provided below the outer shell 19. The handle portion 23 is provided on the upper surface of the cleaner body 1 so as to be able to be pulled out and carries the cleaner body 1.

The power supply unit 7 is provided behind the roller 11 and, as shown in FIG.
3 and the roller 11. For this reason, when the cleaner main body 1 is suspended by the handle 23, the suction unit 3 is tilted so as to be above the roller 11. So that it abuts.

The operation of the above configuration will be described. When the power switch 19 is turned on, when starting cleaning, the panel switch 14 sequentially displays whether there is no heat source, whether the door is closed, whether a child or a pet is in the room, and the like. Eliminate obstacles. After that, "Start cleaning" is displayed and "O
When "K" is input, the electric blower 4 is driven, the roller 11 is driven by the drive motor 8, and the vehicle starts straight traveling forward. At this time, "cleaning" and "pause" are displayed on the panel switch 14, as shown in FIG.

During traveling, the distance measuring sensor 9 constantly transmits and receives light (infrared rays) through the transparent or translucent outer shell 20 while performing dust collection work by the electric blower 4 to reach obstacles such as surrounding furniture. , And the level difference sensor 10 confirms the level difference of the surface to be cleaned in the same manner. The detection states of the distance measuring sensor 9 and the level difference sensor 10 are displayed by the first display means 15, and the operation states of the electric blower 4, the drive motor 8, and the like are displayed by the second display means 16.

When the distance from the cleaner main body 1 to an obstacle such as furniture approaches a predetermined distance, the vehicle temporarily stops and then changes its direction by swinging a predetermined angle and travels. The same applies to the case where there is a step on the surface to be cleaned. In this way, cleaning is performed by automatically traveling in the cleaning area while avoiding obstacles such as furniture and steps.

At this time, the exhaust from the electric blower 4 passes between the battery packs 7 as shown by arrows in FIG. The battery can be cooled, and the temperature rise of the battery can be reduced.

The exhaust of the electric blower 4 is discharged from between the bumper 22 and the cleaner body 1 as shown by an arrow in FIG. Therefore, the exhaust of the electric blower 4 can be dispersed and discharged over almost the entire circumference of the cleaner main body 1, and the flow velocity at the time of discharging can be reduced.
It is possible to eliminate the adverse effect of the exhaust air on furniture and the like near the traveling route of the cleaner body 1.

The exhaust of the electric blower 4 may be exhausted from the upper surface of the cleaner main body 1 as shown by an arrow in FIG. Exhaust of the electric blower does not hit certain furniture or the like, and adverse effects due to the exhaust can be eliminated.

Next, in the case where an obstacle occurs in the automatic running such as hitting an obstacle during running or the like, if "temporary stop" displayed on the panel switch 14 is touched, at least the drive motor 8 is stopped. , Can ensure safety in an emergency. At this time, the display of the panel switch 14 is set to “restart”. At this time, since the cleaner main body 1 is stopped, the stop of the cleaner main body 1 is displayed on the third display means 17 and the cleaner main body 1 is stopped.
Location can be notified.

After removing obstacles to automatic driving,
When "OK" displayed on the panel switch 14 at the same time as "Restart" is touched, the drive motor 8
Drives the roller 11 to restart the automatic running and clean the surface to be cleaned.

As described above, the main body of the cleaner is transparent or translucent, and includes the distance measuring sensor 9 and the step sensor 10 for optically detecting a distance and a heat source. The transmission and reception of light (infrared light) of the sensor 9 and the step sensor 10 can be performed through the outer shell 20,
The sensor can be operated reliably, the vehicle can travel while avoiding obstacles and the like, and the traveling performance can be improved. Further, the structure of the outer shell 20 can be simplified, and the cost can be reduced.

The step sensor 10, the surface to be cleaned (floor surface)
In order to detect the step, it is necessary to provide the cleaner diagonally downward, but by arranging it at a corner portion viewed from the upper surface of the cleaner body 1, the cleaner can be provided with effective use of space.

A power supply 6 is provided behind the roller 11 so that the center of gravity of the cleaner main body 1 is positioned between the caster 13 and the roller 1.
When the cleaner main body 1 is placed on the floor from a state in which the cleaner main body 1 is suspended from the handle 23, such as when the cleaner main body 1 is carried by the handle 23, the roller 11 is positioned first. By contact with the floor surface, a large force is not applied to the suction part 3, and the suction part 3 can be prevented from being damaged.

(Embodiment 2) As shown in FIG. 10, an electric blower 4, a drive motor 8, a distance measuring sensor 9, a step sensor 1
0, the control device 18 connects the ground wire 24,
This ground wire 24 is connected to a negative terminal of a battery 25 constituting the power supply unit 6. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the electric blower 4 is driven and the roller 11 is driven by the drive motor 8 to automatically run and perform cleaning, particularly when the surface to be cleaned is a carpet, static electricity is generated. The static electricity is transmitted to the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, and the controller 18 via the ground wire 24.
Since it is connected to the minus terminal of the battery 25, it can escape through the ground wire 24, and can be prevented from being damaged by static electricity. In addition, even when a strong electric field is applied, the breakdown due to the strong electric field can be similarly prevented.

As shown in FIG. 11, the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, and the control device 18 are connected via a ground wire 24 to a metal chassis 12 on which the drive motor 8 is mounted. By connecting the chassis 12 to the negative terminal of the battery 25,
Similarly, when static electricity or a strong electric field is applied, destruction by the static electricity or a strong electric field can be prevented.

In this embodiment, the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, the control device 1
8 is connected to the negative terminal of the battery 25 via the ground wire 24, but at least one of them may be connected to the negative terminal of the battery 25 via the ground wire 24. The effect can be obtained.

(Embodiment 3) The dust collecting section 5 (AA) shown in FIG.
12, a dust box 26 which can be taken out and a filter 27 which is mounted in the dust box 26 and filters dust, as shown in FIG. Other than the front of the main body, for example, as shown in FIG.
So that it can be taken out from the side. Here, at least one of the dust box 26 and the filter 27 is subjected to a flame retardant treatment.

Further, as shown in FIG.
A dust box detection switch 28 is provided at a to detect the presence or absence of the dust box 26. As shown in FIG. 15, when the dust box 26 is pulled out, the dust box detection switch 28 is turned off, and at least the electric blower 4 is stopped. Like that. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. Clean the dust box 26 with the filter 27
a, the dust box detection switch 28 is turned on. In this state, when the electric blower 4 is driven to suck dust on the surface to be cleaned from the suction unit 5, the dust is filtered by the filter 27 and collected in the dust box 26.

When the dust collected in the dust box 26 is full, the dust box 26 is taken out and the accumulated dust is discarded. Here, since the dust box 26 can be taken out from a lateral direction other than the front surface of the cleaner main body 1a, even if the cleaner main body 1a starts running while the dust box 26 is being taken out, the dust box 26 is removed. The safety can be improved without hitting the person who is taking out the food.

Since the dust box 26 is mounted immediately above the suction section 3, a hose (not shown) connecting the dust box 26 and the suction section 3 can be shortened, and the structure can be simplified. Dust box 26
Can be easily taken out.

When the dust box 26 is not attached, at least the electric blower 4 is stopped by the dust box detection switch 28. Therefore, when the dust box 26 is not attached, dust is not sucked in and kept clean. be able to.

Further, since at least one of the dust box 26 and the filter 27 is subjected to flame retardancy, safety can be ensured even when high-temperature dust such as a lit cigarette is inhaled.

(Embodiment 4) As shown in FIG. 16, a metal chassis 12 is provided with a drive motor 8 for driving a roller 11 for running the cleaner body 1, and the cleaner body 1 is mounted above the chassis 12. And a spring 29 is provided between the chassis 12 and the cleaner body 1 to constantly urge the cleaner body 1 upward.

As shown in FIG. 17, when the weight of the cleaner main body 1 exceeds a predetermined value, the weight detection switch 30 lowers the cleaner main body 1 against the spring force of the spring 29. When the weight detection switch 30 is turned on, at least the drive motor 4 is stopped. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When a weight greater than a predetermined value is applied to the cleaner body 1 such as when a person rides on the cleaner body 1, the weight detection switch 30
When at least the drive motor 4 is stopped by turning on, the person riding on the cleaner body 1 can be notified of the abnormal state, and safety can be ensured.

Further, since the cleaner main body 1 is mounted above the chassis 12 via the spring 29, the spring 29 functions as a damper, and the vibration or impact when the cleaner main body 1 is run by the rollers 11 is provided. Is the vacuum cleaner body 1,
In particular, the reliability is improved without being transmitted to the control device.

(Embodiment 5) As shown in FIG. 18, the bumper 22a is provided below the cleaner main body 1 and is made of an elastic body to prevent the furniture from being damaged and to hit an obstacle such as furniture. A control device (not shown) that is configured to be movable when touched and controls the operation of an electric blower, a drive motor, and the like by the movement of the bumper 22a when the bumper 22a touches an obstacle such as furniture.

Here, the bumper 22a is arranged at a position at least 10 mm away from the floor (cleaning surface) and at most 100 mm from the floor. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the electric blower 4 is driven and the roller 11 is driven by the drive motor 8 to automatically travel and perform cleaning, the air blower 4 is moved 10 degrees from the floor surface.
When there is an obstacle at a position separated by not less than mm, the electric blower, the drive motor, and the like are stopped by the control device by the obstacle hitting the bumper 22a.

On the other hand, when the floor surface (the surface to be cleaned) is a carpet,
Electric blower by carpet hitting bumper 22a,
Since it may be necessary to prevent the drive motor or the like from stopping, the operation can be prevented from being affected by the carpet by disposing the bumper at a position at least 10 mm away from the floor surface. .

Further, a switch such as a stove placed on the floor (cleaning surface) is located at a position higher than the floor by 100 mm. Therefore, even if the bumper 22a hits a stove or the like during traveling, the switch is not turned on by the bumper 22a, and safety can be ensured.

(Embodiment 6) As shown in FIG. 19, the suction portion 3a is provided with a rotating brush 2 so as to be rotatable. )
, The floor surface is prevented from being damaged, and a raised cloth 33 is provided to improve the suction performance. A step detecting switch 34 for detecting a step on the floor is provided near both ends of the suction section 3a. As shown in FIG. 20, the step detecting switch 34 has a rotatable first roller body 35 which comes into contact with the floor surface.

When the first roller body 35 is in contact with the floor surface, it is in the state shown by the solid line in FIG. 21 (c). The state shown by the dotted line is obtained. FIG. 21 shows the first roller body 35.
As shown in (a), a projection 36 is provided. When the first roller 35 is in contact with the surface to be cleaned by the projection 36, a detection switch 37 provided on the suction portion 3a is turned on. When the vehicle is disengaged on a step or the like, the detection switch 37 is turned off, and at least the drive motor is stopped.

Further, the first roller body 35 has the structure shown in FIG.
As shown in (c), a magnet 39 is fixed to the roller unit 38, and a magnetic sensing element 40 such as a Hall element is provided at a position where the magnetic flux of the magnet 39 can be detected. The state, in other words, the running state of the cleaner body is detected. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. In a state in which the first roller body 35 of the step detecting switch 34 provided near both ends of the suction portion 3a is in contact with the surface to be cleaned, the electric blower is driven and the rotary brush 2 is driven at the same time. Driving and automatic running to clean.

In this state, when the first roller body 35 comes off the wheel on a concave step, the state shown by the dotted line in FIG. 21C is reached, the detection switch 37 is turned off, and at least the drive motor is stopped. In addition, it is possible to prevent the cleaner body from falling on the concave step.

In a state where the rollers are driven by the drive motor and the roller is automatically traveling, the roller portion 38 of the first roller body 35 is rotating. Output a periodic signal. Here, when the roller that automatically travels through the cleaner body slips, the cleaner body does not travel despite the drive motor and the roller being rotating.

At this time, since the roller portion 38 of the first roller body 35 stops, the output from the magnetic sensing element 40 stops, and it is possible to detect that the cleaner main body is stopped. Also, it is possible to eliminate the problem that the cleaner main body does not run despite the rotation of the rollers.

(Embodiment 7) As shown in FIG. 22, a suction switch 3b is provided with a safety switch 41 having a sliding portion substantially at the front center.
Is provided. As shown in FIG. 23, the safety switch 41 has a rotatable second roller body 42 that comes into contact with the floor surface (the surface to be cleaned).

The second roller body 42 has the same structure as the first roller body 35 of the sixth embodiment, and when it is in contact with the floor, it is shown by a solid line in FIG. 21 (c). In this state, when the main body of the vacuum cleaner is inclined and the suction part 3b is separated from the floor surface, the state shown by the dotted line in FIG. 21C is reached. In this state, at least the rotary brush 3 is stopped. . Other configurations are the same as those in the first or sixth embodiment.

The operation of the above configuration will be described. In a state in which the second roller body 42 of the safety switch 41 provided substantially at the center of the front part of the suction part 3b is in contact with the floor surface (the surface to be cleaned), the electric brush is driven and the rotating brush 2 is driven at the same time. The roller is driven by the drive motor to automatically run for cleaning.

In this state, the main body of the vacuum cleaner is
When b moves away from the floor, the second roller body 42
1 (c), the detection switch 37 is turned off, the rotating brush 2 is stopped at least, and the safety is improved in the case of an abnormality such as the cleaner body tilting and the suction part being separated from the floor surface. can do.

Further, in a state where the rollers are driven by the drive motor and the vehicle is automatically traveling, similarly to the sixth embodiment,
Since the roller portion of the second roller body 42 is rotating, a periodic signal is output to the magnetic sensing element 40 according to the rotation of the roller portion. Here, when the roller that automatically travels through the cleaner body slips, the cleaner body does not travel despite the drive motor and the roller being rotating.

At this time, since the roller portion of the second roller body 42 stops, there is no output from the magnetic sensing element 40, and it is possible to detect that the main body of the cleaner is stopped. It is possible to eliminate the problem that the cleaner main body does not run despite the rotation of the roller.

The safety switch 41 in this embodiment is
The step detecting switch 34 described in the sixth embodiment may also be used. In this case, the configuration can be simplified and the cost can be reduced.

[0089]

As described above, according to the present invention, the operation of a sensor for detecting a distance, a heat source, and the like by transmitting and receiving light (infrared rays) is ensured, driving performance is improved, and the outer structure is simplified. A self-propelled vacuum cleaner with reduced cost can be provided. In addition, a self-propelled vacuum cleaner having high usability and enhanced safety measures can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a self-propelled cleaner according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the self-propelled vacuum cleaner.

FIG. 3 is a top view of the self-propelled vacuum cleaner.

FIG. 4 is a sectional view of a main part of the self-propelled vacuum cleaner.

FIG. 5 is a side view of the self-propelled cleaner in a state of being suspended by a handle.

FIG. 6 is a top view of a display state of a driving instruction of the self-propelled vacuum cleaner.

FIG. 7 is a longitudinal sectional view showing an exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 8 is a perspective view showing an exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 9 is a perspective view showing another example of the exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 10 is a block diagram showing a connection state of a ground wire of the self-propelled cleaner according to the second embodiment of the present invention.

FIG. 11 is a block diagram showing another example of the connection state of the ground wire of the self-propelled cleaner.

FIG. 12 is a partially cutaway side view of a dust box of a self-propelled vacuum cleaner according to a third embodiment of the present invention.

FIG. 13 is a perspective view of the self-propelled vacuum cleaner with a dust box pulled out.

FIG. 14 is a partially cutaway front view of the self-propelled vacuum cleaner.

FIG. 15 is a partially cutaway front view of the self-propelled vacuum cleaner with a dust box pulled out.

FIG. 16 is a partially cutaway side view of a self-propelled cleaner according to a fourth embodiment of the present invention.

FIG. 17 is a partially cutaway side view of the self-propelled vacuum cleaner in a state where a main body of the vacuum cleaner is lowered.

FIG. 18 is a side view of a self-propelled cleaner according to a fifth embodiment of the present invention.

FIG. 19 is a bottom view of a suction part of a self-propelled cleaner according to a sixth embodiment of the present invention.

FIG. 20 is a side view of a suction portion of the self-propelled vacuum cleaner.

21A is a right side view of a first roller body of a suction unit of the self-propelled cleaner. FIG. 21B is a front view of a first roller body of a suction unit of the self-propelled cleaner. Left side view of the first roller body of the suction part of the self-propelled vacuum cleaner

FIG. 22 is a bottom view of the suction part of the self-propelled cleaner according to the seventh embodiment of the present invention.

FIG. 23 is a side sectional view of a suction portion of the self-propelled vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 3 Suction part 4 Electric blower 5 Dust collection part 6 Power supply part 8 Drive motor 9 Distance measuring sensor (sensor) 10 Step sensor (sensor) 11 Roller 20 Outer shell

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[Procedure amendment]

[Submission date] March 22, 2002 (2002.3.2.
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Self-propelled vacuum cleaner

[Claims]

4. The self-propelled cleaner according to claim 1 , wherein some of the sensors for optically detecting a distance, a heat source, and the like are disposed at corners of the cleaner main body as viewed from above.

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled cleaner having a self-propelled function in a cleaner body and automatically cleaning a surface to be cleaned.

[0002]

2. Description of the Related Art Conventionally, a self-propelled vacuum cleaner of this type has a structure in which a flow of air sucking dust generated by an electric blower is used.
The suction unit suctions dust adhering to the surface to be cleaned, and the suction unit collects the dust in the dust collection unit. And a plurality of sensors for detecting the pressure, a cleaner main body is configured, and the cleaner main body is configured to be able to travel by rollers driven by a drive motor.

In the self-propelled vacuum cleaner constructed as described above, when the power switch provided on the cleaner body is turned on and the start switch is turned on to start the operation, the electric blower is driven,
Straight running is started by a roller driven by a drive motor. While traveling, measure the distance to obstacles such as furniture with multiple sensors, further confirm the step on the surface to be cleaned, run around obstacles and steps, and at the same time, air generated by the electric blower With the flow, dust adhering to the surface to be cleaned is sucked from the suction portion, and the surface to be cleaned is automatically cleaned.

[0004]

In such a conventional configuration, the main body of the cleaner is covered with an outer shell, and since the outer shell is opaque, light (infrared rays) from a plurality of sensors for detecting distances is transmitted and received. In order to do this, it is necessary to make the passage of light (infrared light) transparent,
There was a problem that the cost was high. In addition, there is a problem that the display function for the user is not enhanced and the usability is not good .

The present invention has been made to solve the above-mentioned conventional problems, and ensures the operation of a sensor for detecting a distance and a heat source by transmitting and receiving light (infrared rays), thereby improving running performance and simplifying the structure of an outer shell. To reduce costs. In addition to the above objectives,
It is also intended to provide a gastric own Hashishiki vacuum cleaner.

[0006]

In order to achieve the above object, the present invention provides a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and the electric blower. A dust collecting unit for collecting dust sucked by the above , a roller serving as a traveling unit driven by a drive motor, a power supply unit for supplying power to the electric blower and the drive motor, and an optical obstacle. Distance from objects, heat source, etc.
And a sensor for detecting the electric blower, the dust collecting part,
A vacuum cleaner book comprising a power supply unit and an outer shell including the sensor;
In the body, the outer shell may be transparent or translucent
In addition, the sensor is a self-propelled cleaner that transmits and receives light through the outer shell .

[0007] This makes it possible to reliably operate a sensor for detecting a distance, a heat source, and the like by transmitting and receiving light (infrared rays), to travel while avoiding an obstacle or the like, and to improve traveling performance. In addition to this, the structure of the outer shell can be simplified and the cost can be reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and the electric blower. A dust collection unit for collecting the sucked dust , a roller serving as a traveling unit driven by a drive motor, a power supply unit for supplying power to the electric blower and the drive motor, and an optical obstacle Detects distance to objects, heat source, etc.
Sensor, the electric blower, the dust collector, and the power supply
Part, a vacuum cleaner body consisting of an outer shell enclosing the sensor.
The outer shell is transparent or translucent,
The sensor transmits and receives light through the outer shell , and can transmit and receive light (infrared light) of a sensor that detects a distance, a heat source, and the like through the outer shell, and can reliably operate the sensor. The vehicle can travel while avoiding obstacles and the like, and the traveling performance can be improved.
Further, the cost can be reduced by simplifying the outer structure.

According to a second aspect of the present invention, in the first aspect of the present invention, display means for displaying a detection state by a sensor and / or an operation state of an electric blower, a drive motor, or the like is provided. The detection state of the distance and the heat source by the sensor and / or the operation state of the electric blower, the drive motor, and the like can be displayed and visually recognized.

According to a third aspect of the present invention, in the second aspect of the present invention, the display means includes a first display means for displaying a detection state by a sensor, and an operation state of an electric blower, a drive motor and the like. The first display means and the second display means respectively display a distance detected by a sensor, a detection state of a heat source, and an operation state of an electric blower, a drive motor, and the like. In addition, one of the first display means and the second display means can display a detection state of a distance or a heat source by a sensor and an operation state of an electric blower, a drive motor, or the like.

[0011] The invention according to claim 4 is the invention according to claim 1.
In the described invention, distance, heat source, etc. are optically detected.
Some sensors from the top of the vacuum cleaner
It is arranged at the corner where it is seen, such as a step sensor
Is obliquely downward to detect the level difference on the surface to be cleaned (floor surface).
Must be installed facing the
By placing them in the corners
Can be provided.

[0012]

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

(Embodiment 1) As shown in FIGS. 1 and 2, a vacuum cleaner main body 1 is provided with a suction portion 3 having two rotating brushes 2 on a front bottom portion, and the rotating brushes 2 are used on a surface to be cleaned. It is configured to scrape up the attached dust. The electric blower 4 generates a flow of air for sucking dust, and communicates with the suction unit 3 via the dust collection unit 5.
Thus, dust sucked from the suction unit 3 is collected in the dust collection unit 5.

The power supply section 6 is constituted by a battery pack 7 containing a plurality of rechargeable secondary batteries, and supplies power to the electric blower 4 and a drive motor 8 described later. Distance measuring sensor (sensor)
Numeral 9 measures the distance by irradiating light (infrared light) and irradiating the reflected light reflected by an obstacle such as furniture, and the distance is measured in front, side, and rear of the cleaner body 1, respectively. A plurality is provided. The level difference sensor (sensor) 10 detects a level difference on the surface to be cleaned (floor surface), and is configured in the same manner as the distance measuring sensor 8 described above, and as shown in FIG. It is provided diagonally downward.

The rollers 11 are for driving the cleaner body 1 and are provided on the left and right sides of the cleaner body 1 and are independently driven left and right by a drive motor 8 mounted on a metal chassis 12 as shown in FIG. Is done. The drive motor 8 is constituted by a geared motor having a built-in reduction gear (not shown). The casters 13 support the cleaner main body 1 so that it can run freely.

The panel switch 14 has a function of displaying characters and the like, and has a function of turning on and off when touched, and is provided on the upper surface of the cleaner body 1. The first display means 15 displays the detection state of the distance measuring sensor 9 and the level difference sensor 10, and is constituted by a light emitting diode, and is provided above the level difference sensor 10 provided at a corner portion of the cleaner body 1. . The second display means 16 is for displaying the operation state of the electric blower 4, the drive motor 8, and the like, and is provided on the upper surface of the cleaner body 1. The third display means 17 displays when the cleaner main body 1 is stopped, and is provided on the upper surface of the cleaner main body 1.

It is to be noted that either one of the first display means 15 and the second display means 16 detects the state detected by the distance measuring sensor 9 and the level difference sensor 10 and the electric blower 4 and the drive motor 8.
The operation state such as the operation state may be displayed. Also,
The first display means 15 may be provided on the upper surface of the cleaner body 1.

The panel switch 14, the first display means 15, the second display means 16, and the third display means 1
Reference numeral 7 is connected to a control device 18. When the user touches the panel switch 14, the operation of the electric blower 4, the drive motor 8, and the like is controlled by the control device 18, and the electric blower 4 sucks dust. , While being automatically driven by the rollers 11 driven by the drive motor 8,
By touching a predetermined portion of the panel switch 14 at the time of emergency during automatic traveling, at least the drive motor 8 is stopped. Reference numeral 19 denotes a power switch.

The cleaner body 1 includes a suction section 3, an electric blower 4, a dust collecting section 5, a power supply section 6, a drive motor 8, a distance measuring sensor 9, a level difference sensor 10, a control device 18, and the like. Covered with 20. For this reason, the distance measuring sensor 9 and the step sensor 10 transmit and receive light (infrared rays) through the outer shell 20, and the step sensor 10 is provided obliquely downward at the corner of the cleaner body 1. Light (infrared rays) is transmitted and received through the protruding portion 21 having a part protruding. Note that the outer shell 20 may be translucent.

Below the outer shell 19, a bumper 22 made of an elastic material is provided. The handle portion 23 is provided on the upper surface of the cleaner body 1 so as to be able to be pulled out and carries the cleaner body 1.

The power supply unit 7 is provided behind the roller 11 and, as shown in FIG.
3 and the roller 11. For this reason, when the cleaner main body 1 is suspended by the handle 23, the suction unit 3 is tilted so as to be above the roller 11. So that it abuts.

The operation of the above configuration will be described. When the power switch 19 is turned on, when starting cleaning, the panel switch 14 sequentially displays whether there is no heat source, whether the door is closed, whether a child or a pet is in the room, and the like. Eliminate obstacles. After that, "Start cleaning" is displayed and "O
When "K" is input, the electric blower 4 is driven, the roller 11 is driven by the drive motor 8, and the vehicle starts straight traveling forward. At this time, "cleaning" and "pause" are displayed on the panel switch 14, as shown in FIG.

During traveling, the distance measuring sensor 9 always transmits and receives light (infrared rays) through the transparent or translucent outer shell 20 while performing dust collection work by the electric blower 4 to reach obstacles such as surrounding furniture. , And the level difference sensor 10 confirms the level difference of the surface to be cleaned in the same manner. The detection states of the distance measuring sensor 9 and the level difference sensor 10 are displayed by the first display means 15, and the operation states of the electric blower 4, the drive motor 8, and the like are displayed by the second display means 16.

When the distance from the cleaner main body 1 to an obstacle such as furniture approaches a predetermined distance, the vehicle temporarily stops, then swings by a predetermined angle to change its direction and travels. The same applies to the case where there is a step on the surface to be cleaned. In this way, cleaning is performed by automatically traveling in the cleaning area while avoiding obstacles such as furniture and steps.

At this time, the exhaust of the electric blower 4 is passed through the space between the battery packs 7 as shown by arrows in FIG. The battery can be cooled, and the temperature rise of the battery can be reduced.

The exhaust of the electric blower 4 is discharged from between the bumper 22 and the cleaner body 1 as shown by an arrow in FIG. Therefore, the exhaust of the electric blower 4 can be dispersed and discharged over almost the entire circumference of the cleaner main body 1, and the flow velocity at the time of discharging can be reduced,
It is possible to eliminate the adverse effect of the exhaust air on furniture and the like near the traveling route of the cleaner body 1.

The exhaust of the electric blower 4 may be exhausted from the upper surface of the cleaner body 1 as shown by an arrow in FIG. Exhaust of the electric blower does not hit certain furniture or the like, and adverse effects due to the exhaust can be eliminated.

Next, in the case where an obstacle occurs in the automatic running such as hitting an obstacle during running or the like, if "temporary stop" displayed on the panel switch 14 is touched, at least the drive motor 8 is stopped. , Can ensure safety in an emergency. At this time, the display of the panel switch 14 is set to “restart”. At this time, since the cleaner main body 1 is stopped, the stop of the cleaner main body 1 is displayed on the third display means 17 and the cleaner main body 1 is stopped.
Location can be notified.

After removing obstacles to automatic driving,
When "OK" displayed on the panel switch 14 at the same time as "Restart" is touched, the drive motor 8
Drives the roller 11 to restart the automatic running and clean the surface to be cleaned.

As described above, the main body of the cleaner is transparent or translucent, and includes the distance measuring sensor 9 and the step sensor 10 for optically detecting a distance, a heat source, and the like. The transmission and reception of light (infrared light) of the sensor 9 and the step sensor 10 can be performed through the outer shell 20,
The sensor can be operated reliably, the vehicle can travel while avoiding obstacles and the like, and the traveling performance can be improved. Further, the structure of the outer shell 20 can be simplified, and the cost can be reduced.

Further, the step sensor 10, the surface to be cleaned (floor surface)
In order to detect the step, it is necessary to provide the cleaner diagonally downward, but by arranging it at a corner portion viewed from the upper surface of the cleaner body 1, the cleaner can be provided with effective use of space.

A power supply unit 6 is provided behind the roller 11 so that the center of gravity of the cleaner body 1 is positioned between the caster 13 and the roller 1.
When the cleaner main body 1 is placed on the floor from a state in which the cleaner main body 1 is suspended from the handle 23, such as when the cleaner main body 1 is carried by the handle 23, the roller 11 is positioned first. By contact with the floor surface, a large force is not applied to the suction part 3, and the suction part 3 can be prevented from being damaged.

Reference Example 1 The self-propelled vacuum cleaner of the present invention will be described below.
The configuration of the control device will be described as Reference Example 1.

As shown in FIG. 10, the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, the control device 1
8 is connected to a ground wire 24,
4 is connected to a negative terminal of a battery 25 constituting the power supply unit 6. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the electric blower 4 is driven and the roller 11 is driven by the drive motor 8 to automatically run and perform cleaning, particularly when the surface to be cleaned is a carpet, static electricity is generated. The static electricity is transmitted to the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, and the controller 18 via the ground wire 24.
Since it is connected to the minus terminal of the battery 25, it can escape through the ground wire 24, and can be prevented from being damaged by static electricity. In addition, even when a strong electric field is applied, the breakdown due to the strong electric field can be similarly prevented.

As shown in FIG. 11, the electric blower 4, the drive motor 8, the distance measuring sensor 9, the level difference sensor 10, and the control device 18 are connected via a ground wire 24 to a metal chassis 12 on which the drive motor 8 is mounted. By connecting the chassis 12 to the negative terminal of the battery 25,
Similarly, when static electricity or a strong electric field is applied, destruction by the static electricity or a strong electric field can be prevented.

In this embodiment , the electric blower 4, the drive motor 8, the distance measuring sensor 9, the step sensor 10, the control device 1
8 is connected to the negative terminal of the battery 25 via the ground wire 24, but at least one of them may be connected to the negative terminal of the battery 25 via the ground wire 24. The effect can be obtained.

Reference Example 2 The self-propelled vacuum cleaner of the present invention is described below.
The configuration of the dust box is described as Reference Example 2.
You.

The dust collecting section 5 (AA line) shown in FIG.
2. As shown in FIG.
And a filter 27 that is mounted in the dust box 26 and filters dust. The dust box 26 is mounted directly above the suction unit 3 and other than the front surface of the cleaner body, for example, as shown in FIG. The main body 1a can be taken out from the lateral direction. Here, at least one of the dust box 26 and the filter 27 is subjected to a flame retardant treatment.

Further, as shown in FIG.
A dust box detection switch 28 is provided at a to detect the presence or absence of the dust box 26. As shown in FIG. 15, when the dust box 26 is pulled out, the dust box detection switch 28 is turned off, and at least the electric blower 4 is stopped. Like that. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. Clean the dust box 26 with the filter 27
a, the dust box detection switch 28 is turned on. In this state, when the electric blower 4 is driven to suck dust on the surface to be cleaned from the suction unit 5, the dust is filtered by the filter 27 and collected in the dust box 26.

When the dust collected in the dust box 26 is full, the dust box 26 is taken out and the accumulated dust is discarded. Here, since the dust box 26 can be taken out from a lateral direction other than the front surface of the cleaner main body 1a, even if the cleaner main body 1a starts running while the dust box 26 is being taken out, the dust box 26 is removed. The safety can be improved without hitting the person who is taking out the food.

Further, since the dust box 26 is mounted immediately above the suction section 3, a hose (not shown) connecting the dust box 26 and the suction section 3 can be shortened, and the structure can be simplified. Dust box 26
Can be easily taken out.

When the dust box 26 is not attached, at least the electric blower 4 is stopped by the dust box detection switch 28. Therefore, when the dust box 26 is not attached, the dust is not sucked in and kept clean. be able to.

Further, since at least one of the dust box 26 and the filter 27 is flame-retarded, safety can be ensured even when high-temperature dust such as a lit cigarette is inhaled.

( Reference Example 3 ) The self-propelled vacuum cleaner of the present invention will be described below.
The configuration of the traveling means will be described as Reference Example 3.

As shown in FIG. 16, a metal chassis 1
2 is provided with a drive motor 8 for driving a roller 11 for running the cleaner main body 1, the cleaner main body 1 is mounted above the chassis 12, and the chassis 12 and the cleaner main body 1 are mounted.
, The spring 29 that constantly urges the cleaner body 1 upward.
Is provided.

As shown in FIG. 17, when the weight of the cleaner body 1 is applied to the cleaner body 1 by a weight equal to or more than a predetermined value, the weight detector switch 30 is lowered by resisting the spring force of the spring 29. When the weight detection switch 30 is turned on, at least the drive motor 4 is stopped. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When a weight greater than a predetermined value is applied to the cleaner body 1 such as when a person rides on the cleaner body 1, the weight detection switch 30
When at least the drive motor 4 is stopped by turning on, the person riding on the cleaner body 1 can be notified of the abnormal state, and safety can be ensured.

Further, since the cleaner body 1 is mounted above the chassis 12 via the spring 29, the spring 29 functions as a damper, and the vibration or impact when the cleaner body 1 is run by the rollers 11 is provided. Is the vacuum cleaner body 1,
In particular, the reliability is improved without being transmitted to the control device.

( Reference Example 4 ) The self-propelled vacuum cleaner of the present invention is described below.
The configuration of the bumper will be described as Reference Example 4.

As shown in FIG. 18, the bumper 22a
It is provided below the cleaner body 1 and is made of an elastic body to prevent the furniture from being damaged, and is configured to be movable when it comes into contact with an obstacle such as furniture, and when it comes into contact with an obstacle such as furniture. A control device (not shown) for controlling the operation of the electric blower, the drive motor and the like by the movement of the bumper 22a is provided.

Here, the bumper 22a is arranged at a position at least 10 mm away from the floor surface (the surface to be cleaned) and 100 mm or less from the floor surface. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the electric blower 4 is driven and the roller 11 is driven by the drive motor 8 to automatically travel and perform cleaning, the air blower 4 is moved 10 degrees from the floor surface.
When there is an obstacle at a position separated by not less than mm, the electric blower, the drive motor, and the like are stopped by the control device by the obstacle hitting the bumper 22a.

On the other hand, when the floor surface (the surface to be cleaned) is a carpet,
Electric blower by carpet hitting bumper 22a,
Since it may be necessary to prevent the drive motor or the like from stopping, the operation can be prevented from being affected by the carpet by disposing the bumper at a position at least 10 mm away from the floor surface. .

Further, a switch such as a stove placed on the floor surface (the surface to be cleaned) is higher than the floor surface by 100 mm. Therefore, even if the bumper 22a hits a stove or the like during traveling, the switch is not turned on by the bumper 22a, and safety can be ensured.

( Reference Example 5 ) The self-propelled vacuum cleaner of the present invention will be described below.
The structure of the suction section will be described as Reference Example 5.

As shown in FIG. 19, the suction portion 3a is provided with a rotating brush 2 rotatably. When the brushed cloth 32 is fixed before and after the rotating brush 2, the suction portion 3a hits the floor (cleaning surface). In addition, the floor surface is prevented from being damaged, and a raised cloth 33 is provided to improve suction performance. A step detecting switch 34 for detecting a step on the floor is provided near both ends of the suction section 3a. As shown in FIG. 20, the step detecting switch 34 is a rotatable first roller body 35 that abuts on the floor surface.
have.

When the first roller body 35 is in contact with the floor surface, it is in the state shown by the solid line in FIG. 21 (c). The state shown by the dotted line is obtained. FIG. 21 shows the first roller body 35.
As shown in (a), a projection 36 is provided. When the first roller 35 is in contact with the surface to be cleaned by the projection 36, a detection switch 37 provided on the suction portion 3a is turned on. When the vehicle is disengaged on a step or the like, the detection switch 37 is turned off, and at least the drive motor is stopped.

Also, the first roller body 35 has a structure shown in FIG.
As shown in (c), a magnet 39 is fixed to the roller unit 38, and a magnetic sensing element 40 such as a Hall element is provided at a position where the magnetic flux of the magnet 39 can be detected. The state, in other words, the running state of the cleaner body is detected. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. In a state in which the first roller body 35 of the step detecting switch 34 provided near both ends of the suction portion 3a is in contact with the surface to be cleaned, the electric blower is driven and the rotary brush 2 is driven at the same time. Driving and automatic running to clean.

In this state, when the first roller body 35 comes off the wheel on a concave step, the state shown by the dotted line in FIG. 21C is reached, the detection switch 37 is turned off, and at least the drive motor is stopped. In addition, it is possible to prevent the cleaner body from falling on the concave step.

In a state where the rollers are driven by the drive motor and the vehicle is automatically traveling, the roller portion 38 of the first roller body 35 is rotating. Output a periodic signal. Here, when the roller that automatically travels through the cleaner body slips, the cleaner body does not travel despite the drive motor and the roller being rotating.

At this time, since the roller portion 38 of the first roller body 35 stops, the output from the magnetic sensing element 40 stops, and it is possible to detect that the cleaner main body is stopped. Also, it is possible to eliminate the problem that the cleaner main body does not run despite the rotation of the rollers.

As shown in FIG. 22, the suction portion 3b
Is provided with a safety switch 41 having a sliding portion substantially at the front center. As shown in FIG. 23, the safety switch 41 has a rotatable second roller body 42 that comes into contact with the floor surface (the surface to be cleaned).

The second roller member 42 is provided with the first roller member 42.
When the cleaner body is inclined and the suction unit 3b is separated from the floor surface in a state shown by a solid line in FIG. Is in a state shown by a dotted line in FIG. 21C, and in this state, at least the rotating brush 3 is stopped.
Other configurations are the same as in Example 1.

The operation of the above configuration will be described. In a state in which the second roller body 42 of the safety switch 41 provided substantially at the center of the front part of the suction part 3b is in contact with the floor surface (the surface to be cleaned), the electric brush is driven and the rotating brush 2 is driven at the same time. The roller is driven by the drive motor to automatically run for cleaning.

In this state, the main body of the vacuum cleaner is tilted and
When b moves away from the floor, the second roller body 42
1 (c), the detection switch 37 is turned off, the rotating brush 2 is stopped at least, and the safety is improved in the case of an abnormality such as the cleaner body tilting and the suction part being separated from the floor surface. can do.

[0069] In the state where the automatic travel by driving the roller by the drive motor, similarly to the above, since the roller portion of the second roller 42 is rotated, magnetic in accordance with the rotation of the roller unit A periodic signal is output to the detection element 40. Here, when the roller that automatically travels through the cleaner body slips, the cleaner body does not travel despite the drive motor and the roller being rotating.

At this time, since the roller portion of the second roller body 42 stops, there is no output from the magnetic sensing element 40, and it is possible to detect that the main body of the cleaner is stopped. It is possible to eliminate the problem that the cleaner main body does not run despite the rotation of the roller.

The safety switch 41 in this embodiment is
It may also serve as upper Kidan difference detection switch 34, in this case, may be less expensive to simplify the configuration.

[0072]

As described above, according to the present invention, the operation of a sensor for detecting a distance, a heat source, and the like by transmitting and receiving light (infrared rays) is ensured, driving performance is improved, and the outer structure is simplified. A self-propelled vacuum cleaner with reduced cost can be provided. In addition, it also provides the use of not higher self Hashishiki cleaner.

[Brief description of the drawings]

FIG. 1 is a perspective view of a self-propelled cleaner according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the self-propelled vacuum cleaner.

FIG. 3 is a top view of the self-propelled vacuum cleaner.

FIG. 4 is a sectional view of a main part of the self-propelled vacuum cleaner.

FIG. 5 is a side view of the self-propelled cleaner in a state of being suspended by a handle.

FIG. 6 is a top view of a display state of a driving instruction of the self-propelled vacuum cleaner.

FIG. 7 is a longitudinal sectional view showing an exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 8 is a perspective view showing an exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 9 is a perspective view showing another example of the exhaust state of the electric blower of the self-propelled vacuum cleaner.

FIG. 10 is a block diagram showing a connection state of a ground wire of the self-propelled cleaner according to the first reference example ;

FIG. 11 is a block diagram showing another example of the connection state of the ground wire of the self-propelled cleaner.

FIG. 12 is a partially cutaway side view of a dust box of the self-propelled cleaner according to the second reference example .

FIG. 13 is a perspective view of the self-propelled vacuum cleaner with a dust box pulled out.

FIG. 14 is a partially cutaway front view of the self-propelled vacuum cleaner.

FIG. 15 is a partially cutaway front view of the self-propelled vacuum cleaner with a dust box pulled out.

FIG. 16 is a partially cutaway side view of the self-propelled vacuum cleaner of the third reference example .

FIG. 17 is a partially cutaway side view of the self-propelled vacuum cleaner in a state where a main body of the vacuum cleaner is lowered.

FIG. 18 is a side view of a self-propelled vacuum cleaner according to a fourth reference example .

FIG. 19 is a bottom view of a suction portion of a self-propelled vacuum cleaner according to a fifth reference example .

FIG. 20 is a side view of a suction portion of the self-propelled vacuum cleaner.

21A is a right side view of a first roller body of a suction unit of the self-propelled cleaner. FIG. 21B is a front view of a first roller body of a suction unit of the self-propelled cleaner. Left side view of the first roller body of the suction part of the self-propelled vacuum cleaner

FIG. 22 is a bottom view of a suction portion of another self-propelled vacuum cleaner.

FIG. 23 is a side sectional view of a suction portion of another self-propelled vacuum cleaner.

[Description of Signs] 1 Vacuum cleaner body 3 Suction unit 4 Electric blower 5 Dust collecting unit 6 Power supply unit 8 Drive motor 9 Distance measuring sensor (sensor) 10 Step sensor (sensor) 11 Roller 20 Outer shell

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) A47L 9/00 102 A47L 9/00 102Z 9/04 9/04 A 9/10 9/10 D (72) Inventor Naoyuki Ohara 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Matsushita Electric Industrial Co., Ltd. (72) Inventor Hiroyuki Kayama 1006 Ojimon Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd. Incorporated (72) Inventor Masayo Haji 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 3B006 BA06 KA01 3B057 DA04 DB02 3B061 AA05 AA14 AA35 AD03 AE02 3B062 AG08

Claims (26)

[Claims] 1. A suction unit for sucking dust adhered on a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller that is driven by and drives the cleaner body, and includes a power supply unit that supplies power to the electric blower and the drive motor, and the cleaner body includes:
A self-propelled vacuum cleaner including the electric blower, the dust collection unit, the power supply unit, and the like, making the outer shell transparent or translucent, and including a sensor for optically detecting a distance to an obstacle, a heat source, and the like. 2. The self-propelled cleaner according to claim 1, further comprising display means for displaying a detection state by a sensor and / or an operation state of an electric blower, a drive motor, or the like. 3. The display device according to claim 2, wherein said display means comprises: first display means for displaying a detection state by a sensor; and second display means for displaying an operation state of an electric blower, a drive motor, or the like. A traveling vacuum cleaner. 4. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A power supply unit for supplying power to the electric blower and the drive motor, and a caster for supporting the cleaner body so that the cleaner body can travel, and the center of gravity of the cleaner body is A self-propelled vacuum cleaner located between casters and rollers. 5. The self-propelled cleaner according to claim 4, wherein a power supply unit is provided behind the roller. 6. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller that drives the cleaner body driven by the electric blower, a power supply unit that supplies power to the electric blower, the drive motor, and a control device that controls operations of the electric blower, the drive motor, and the like. A self-propelled cleaner in which a ground wire connected to at least one of a motor and a control device is connected to a negative terminal of a power supply unit made of a battery. 7. A battery according to claim 6, further comprising a metal chassis for mounting the drive motor, wherein a ground wire connected to at least one of the electric blower, the drive motor, and the control device is connected to the negative terminal of the battery via the chassis. Self-propelled vacuum cleaner. 8. The self-propelled cleaner according to claim 1, wherein the sensors for optically detecting a distance, a heat source, and the like are provided at corners of the cleaner body viewed from above. 9. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. And a power supply unit for supplying power to the electric blower and the drive motor. The dust collection unit is a dust box that can be taken out and a filter that is mounted in the dust box and filters dust. A self-propelled vacuum cleaner, wherein the dust box can be taken out of the vacuum cleaner body from a position other than the front. 10. The self-propelled cleaner according to claim 9, wherein the dust box is mounted immediately above the suction part. 11. The self-propelled cleaning according to claim 9, further comprising a dust box detection switch for detecting the presence or absence of a dust box, wherein when the dust box is not attached, at least the electric blower is stopped by the dust box detection switch. Machine. 12. The self-propelled vacuum cleaner according to claim 9, wherein at least one of the dust box and the filter is subjected to a flame retardant treatment. 13. A suction unit for sucking dust adhered on a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. And a power supply unit for supplying power to the electric blower and the drive motor. The power supply unit includes a battery pack containing a plurality of batteries. Self-propelled vacuum cleaner that blows air from the blower. 14. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller for driving the cleaner body driven by the electric blower, a power supply unit for supplying power to the drive motor, and a bumper provided on an outer periphery of the cleaner body to prevent damage to furniture, A self-propelled cleaner in which exhaust air from an electric blower is discharged from between the bumper and the cleaner body. 15. The self-propelled cleaner according to claim 14, wherein the exhaust of the electric blower is discharged from the upper surface of the cleaner body. 16. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A power supply unit that supplies power to the electric blower and the drive motor, and a third display unit that performs a display operation, and the third display unit is A self-propelled vacuum cleaner that performs a display operation when the vacuum cleaner itself stops. 17. A suction unit for sucking dust attached to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller for driving the cleaner body driven by the electric blower, a power supply unit for supplying power to the drive motor, a panel switch having a function of displaying characters and the like and a function of turning off when touched, and the panel A self-propelled cleaner in which at least the drive motor is stopped by a switch. 18. A cleaner main body including an electric blower, a dust collector, a control device, and the like, and a metal chassis to which a driving motor for driving a roller for driving the cleaner main body is mounted, and a metal chassis is provided above the chassis. A self-propelled cleaner having a cleaner body attached thereto and a spring provided between the chassis and the cleaner body for constantly biasing the cleaner body upward. 19. A weight detection switch which is turned off when a predetermined weight is applied, wherein at least a drive motor is stopped by the weight detection switch when a weight greater than a predetermined value is applied to the cleaner body. 18. The self-propelled vacuum cleaner according to 18. 20. A suction unit for sucking dust adhered to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller that drives the cleaner body driven by the, the electric blower, a power supply unit that supplies power to the drive motor, and a bumper that moves when it comes into contact with an obstacle such as furniture while preventing damage to furniture. A control device for controlling the operation of the electric blower, the drive motor, and the like according to the movement of the bumper, wherein the bumper is disposed at a position at least 10 mm away from the floor surface. 21. The self-propelled cleaner according to claim 20, wherein the bumper is disposed at a position 100 mm or less from the floor. 22. A suction unit for sucking dust adhered on a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, a dust collection unit for collecting dust sucked by the electric blower, and a drive motor. A roller that drives the cleaner body driven by the, the electric blower, comprising a power supply unit for supplying power to the drive motor, provided with a step detection switch for detecting a step on the floor near both ends of the suction unit,
A self-propelled cleaner in which at least the drive motor is stopped by the step detecting switch. 23. A step detecting switch having a rotatable first roller body abutting on a surface to be cleaned, a detecting means for detecting the rotation of the first roller body, and a running state of the cleaner body. The self-propelled cleaner according to claim 22, wherein the self-propelled cleaner is configured to detect the condition. 24. A suction unit having a rotary nozzle for scraping up dust adhering to a surface to be cleaned, an electric blower for generating a flow of air for sucking dust, and a dust collector for collecting dust sucked by the electric blower. Unit, a roller driven by a drive motor to run the cleaner body, a power supply unit for supplying power to the electric blower and the drive motor, and a safety switch having a sliding unit substantially at the front center of the suction unit. A self-propelled cleaner in which at least the rotating brush is stopped by the safety switch. 25. The sliding portion of the safety switch has a rotatable second roller body abutting on the surface to be cleaned.
25. The self-propelled cleaner according to claim 24, further comprising detecting means for detecting rotation of the roller body, and detecting a traveling state of the cleaner body. 26. The self-propelled cleaner according to claim 23, wherein the safety switch also serves as a step detecting switch.