JP4783799B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning device that rotates a rotating brush while running on a carriage, scrapes dust up by the rotation, and collects it in a dust collecting chamber.

Conventionally, in a cleaning device that rotates a rotating brush while running a carriage, scrapes dust up and collects it in the dust collection chamber, the dust scraped up by the rotating brush is placed in the lower part of the dust collection chamber on the opening side. In order to facilitate collection, a dust guide plate inclined to the dust collection chamber side was provided.
When collecting dust reliably, the gap between the tip of the dust guide plate and the cleaning surface should be as narrow as possible, but if this gap is narrowed, the collection rate of the dust scraped up by the rotating brush is Although it increases, there is a problem that dust larger than this gap cannot pass through the gap and clogging occurs in the gap between the tip of the dust guide plate and the cleaning surface.

In order to solve this problem, for example, an invention described in Japanese Patent Publication No. 7-67430 has been proposed.
In the present invention, a dust guide C is provided between a rotating brush A and a dust case B while leaving a gap of a predetermined size from the floor surface, and a flexible sheet whose front end is in contact with the floor surface in front of the dust guide C. It is configured as a vacuum cleaner provided with D.
According to this invention, since the soft sheet | seat arrange | positioned ahead of a dust guide has flexibility, when it contacts with dust, a sheet | seat bends and allows dust to pass through. Since a gap of a predetermined interval is provided between the tip of the dust guide and the floor surface, if the dust that has passed through the sheet is dust up to this gap size, it will also pass through this gap and rotate. It is picked up by the brush and collected in the dust case, so that the gap is not clogged.
On the other hand, a part of the dust scraped up by the rotating brush passes through the gap between the tip of the dust guide and the floor surface, but the flexible sheet placed in front of the dust guide prevents leakage to the outside of the cleaner. Can do.
In other words, according to the present invention, it is possible to collect a certain size of dust while suppressing leakage of dust scraped up by the rotating brush to the outside of the cleaner as much as possible.
Japanese Examined Patent Publication No. 7-67430

However, the dust guide of the present invention is provided with a gap of a predetermined interval from the floor surface, and a flexible sheet configured as a separate part from the dust guide is disposed at a predetermined interval in front of the dust guide. Although it is possible to prevent the dust scraped up by the brush from leaking out of the vacuum cleaner, there is a gap between the dust guide and the floor surface, so there is a gap between the dust guide and the floor surface. Some still leak from this gap, and the dust collection efficiency itself does not improve (see FIG. 6 ).
In addition, dust larger than the gap between the dust guide and the floor cannot pass through this gap, and this gap may cause clogging.
In addition, since the structure is as described above, the structure is complicated and the manufacturing cost is high.

  An object of the present invention is to obtain a cleaning device that improves the collection efficiency of dust as much as possible while suppressing leakage of dust collected by a rotating brush to the outside of the cleaner with a simple structure. .

The cleaning device according to the present invention includes a wheel provided before and after the traveling direction of the base, a dust collecting chamber at the top, and a rotating brush that rotates in the direction opposite to the wheel in the vicinity of the rear wheel and scrapes the dust toward the dust collecting chamber. A dust guide member is rotatably attached to the base via a mounting shaft at a lower part of the dust collection port of the dust collection chamber, and the dust guide member is In order to guide the dust collection chamber from the lower end to the upper end, the dust guide wall inclined in the advancing direction of the base, and the lower end of the dust guide wall is directed downward from the lower surface of the upper and lower middle portion and the lower end is in contact with the cleaning surface It is composed of a flexible leakage prevention wall that allows the dust to enter the cleaning device and prevents leakage to the outside of the cleaning device, and a predetermined interval is provided between the lower end of the dust guide wall and the cleaning surface. The gap is provided.
The dust guide member is preferably provided over the entire width of the dust collection chamber on the side in contact with the rotating brush, and the dust guide wall and the entire leakage prevention wall may be integrally formed of a material such as rubber or resin. The base of the flexible sheet may be attached to the dust guide wall, and the end of the sheet may protrude from the dust guide wall to constitute a leakage prevention wall.

According to the present invention, the dust guide member disposed below the dust collection port of the dust collection chamber is configured so that the base advances from the lower end toward the upper end so as to guide the dust collected to the dust collection chamber. A dust guide wall that is inclined in the direction and the lower end of the dust guide wall that is directed downward from the lower middle part of the dust guide wall, and the lower end is in contact with the cleaning surface, allowing the dust to enter the cleaning device and preventing leakage to the outside of the cleaning device. A flexible leakage prevention wall, and a gap of a predetermined interval is provided between the lower end of the dust guide wall and the cleaning surface. While entering, the leakage prevention wall is temporarily bent to allow the dust to pass therethrough, while the dust scraped up by the rotating brush can be prevented from leaking out of the cleaning device, and the scraped dust can be removed. Guided to the garbage guide wall by the leakage prevention wall, then It can be guided to the dust collecting chamber by garbage guide wall.
That is, the leakage prevention wall not only prevents the dust from leaking out of the cleaning device during the cleaning operation, but also functions as a dust guide wall, so that the collection efficiency of the dust can be improved.

In addition, since the dust guide member is pivotally attached to the base via the mounting shaft , the dust guide member is moved when it comes into contact with dust larger than the gap between the lower end of the dust guide member and the cleaning surface. Since the dust can be touched and rotated upward to allow the dust to enter the cleaning device, it is possible to deal with a large dust and improve the collection efficiency of the dust.

  Examples of the present invention will be described below.

FIG. 1 is a diagram showing a first embodiment of the present invention.
Above the base 3 to which the front wheels 1 and the rear wheels 2 are attached, a dust collection chamber 4 is provided in front of the traveling direction (indicated by the arrow in the figure), and a rotating brush 5 is attached in the vicinity of the rear wheels 2. (The rear wheel 2 moves up and down, is grounded during dust collection work, and is retracted upward except during work. FIG. 1 shows a state in which it is located above). The rotating brush 5 is linked to the rear wheel 2 by a gear so as to rotate in the direction opposite to the wheel. The dust collection chamber 4 has a dust collection port on the rotary brush 5 side, and a dust guide member 6 is disposed below the opening surface of the dust collection chamber 4. Reference numeral 7 denotes a handle.

FIG. 2 is a diagram illustrating a state in which the dust guide member 6 is attached to the base 3. An angle 63 is attached to the lower surface of the dust guide member 6, and is attached rotatably via a mounting bracket 31 and a mounting shaft 64 provided on the base side. Here, the dust guide member 6 is attached so that the center of gravity thereof is closer to the rotating brush than the attachment shaft 64.
The dust guide member 6 is made of rubber or resin, and includes a dust guide wall 61 and a leakage prevention wall 62 configured integrally with the dust guide wall 61. A bent portion 61a is provided.
The dust guide wall 61 is inclined and attached to the base 3 so as to become higher toward the dust collection chamber 4, and is disposed so that the bent portion 61 a is stretched over the front wall 41 of the opening surface of the dust collection chamber 4. Has been.
The leakage prevention wall 62 is directed downward from the lower surface of the upper and lower middle part of the dust guide wall 61. The leakage prevention wall 62 has flexibility.
The lower end of the dust guide wall 61 is a position where a gap 9 is formed for the dust to pass between the cleaning surface 8 and the lower end of the leakage prevention wall 62 is a position in contact with the cleaning surface.
A reinforcing portion may be provided at the branch portion of the leakage prevention wall 62 and the dust guide wall 61 in order to prevent the base of the leakage prevention wall 62 from being sag.
If the tip part including the leakage prevention wall of the dust guide member is connected to the separable base end part as a separate member as shown in FIG. 3b, only the tip part can be replaced when worn, etc. This can be done at low cost.

In FIG. 2, the state indicated by the solid line indicates the lower limit position (normal state) of the dust guide member 6, but there is a predetermined gap 9 between the cleaning surface 8 and the dust guide wall 61 at the lower limit position. It is provided, and the dust guide member 6 does not rotate downward any more. The state indicated by the broken line indicates the upper limit position of the dust guide member 6 and is the maximum at which the dust guide member 6 can rotate when the dust guide member 6 comes into contact with dust larger than the gap 9 in the normal state. This indicates the limit position.
That is, even if the dust guide member 6 contacts the dust guide wall 61 and the cleaning surface 8 in the normal state of the dust guide member 6 and the dust guide member 6 comes into contact with the dust guide wall 61 and the cleaning surface 8, Since the dust guide member 6 rotates around the shaft 64 to widen the gap 9 (reference numeral 9 'in the figure), this dust can be passed. Since the dust guide member 6 is attached so that the center of gravity of the dust guide member 6 is closer to the rotating brush side than the mounting shaft 64, the dust guide member 6 naturally returns to its original position (normal state) after passing through the dust.

FIG. 4 is a view showing a state in which dust on the cleaning surface is collected using the cleaning device of the present invention.
When the handle 7 is pushed to advance the cleaning device, the rear wheel 2 rotates in the direction of the arrow as shown in FIG. 4, and the rotating brush 5 rotates in the direction opposite to the rear wheel 2. The lower end of the rotating brush 5 is in contact with the cleaning surface 8, and when the rotating brush 5 rotates, the dust on the cleaning surface is scraped up in the direction of the dust collection chamber 4. The dust thus scraped up is guided to the dust guide member 6 and collected in the dust collecting chamber 4.

Here, the flexible leakage prevention wall 62 bends in the direction opposite to the traveling direction of the cleaning device, and has a shape in which the gap 9 between the dust guide 61 and the cleaning surface 8 is closed in a pseudo manner. As the cleaning device advances, the rotating brush 5 rotates in the direction indicated by the arrow in the drawing, and scrapes the dust on the cleaning surface. At this time, since the gap 9 is artificially closed by the leakage prevention wall 62, it is possible to suppress the scraped dust from passing through the gap 9.
At the same time, the flow of air generated by the rotation of the rotating brush rises along the direction of the dust guide wall 61 (indicated by broken arrows in the figure). The dust which has been scraped up is taken up in the direction of the dust guide wall 61 by riding on this air flow and guided to the dust collecting chamber 4.
In other words, the dust scraped up by the rotating brush 5 is not leaked to the outside of the cleaning device, but is guided by the dust guide wall 61 and collected in the dust collecting chamber 4, so that it can pass through the gap 9 as much as possible. And the recovery efficiency can be improved.

Further, since the leakage prevention wall 62 has flexibility, when it comes into contact with the dust on the cleaning surface 8, it bends and passes the dust.
Since a gap 9 is provided between the lower end of the dust guide wall 61 and the cleaning surface 8, the dust that has passed through the leakage prevention wall 62 passes through the gap 9 and is scraped up by the rotating brush 5.
Since the size of the dust that can be collected is determined according to the size of the gap 9, the height of the dust guide member 6 attached to the base 3 is adjusted to adjust the height of the dust on the cleaning surface 8. A suitable interval can be selected as appropriate. When the cleaning surface 8 has a lot of large dust, the gap 9 can be widened, and when there is a lot of small dust, the gap 9 can be set narrow.
Furthermore, even if the dust on the cleaning surface is larger than the gap 9, the dust guide member 6 rotates about the mounting shaft 64 to widen the gap 9 (reference numeral 9 ′ in FIG. 2). It is possible to pass dust up to a certain size.

  FIG. 5 shows another embodiment of the leakage preventing wall of the dust guide member. That is, the base portion of the flexible sheet is embedded and fixed to the upper part of the dust guide wall 61, the end part projects from the lower surface of the upper and lower middle part of the dust guide wall 61, and the projecting part constitutes the leakage prevention wall 62. Yes. The sheet leakage prevention wall can be attached to the dust guide wall 61 by attaching a hook-and-loop fastener to the lower surface of the dust guide wall and the base of the seat and detachably attaching the hook through the hook-and-loop fastener. Further, the tip portion including the leakage preventing wall of the dust guide member can be replaced when it becomes worn away as shown in FIG. 5b, and the maintainability can be improved.

  The present invention relates to a cleaning device that rotates a rotating brush while running a carriage, scrapes dust up by the rotation, and collects it in a dust collecting chamber, and has industrial applicability.

Schematic diagram showing the cleaning device of the present invention (partially cut away) The figure which shows the attachment state to the base of the dust guidance member in 1st Example of this invention Enlarged view showing the dust guide member The figure which similarly shows the state which collects the dust Similarly, an enlarged view showing a dust guide member with a leak prevention wall made of sheet material The enlarged view which shows the state of the dust guide member at the time of use of the conventional cleaning apparatus

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Base 31 Mounting bracket 4 Dust collection chamber 5 Rotating brush 6 Dust guide member 61 Dust guide wall 62 Leakage prevention wall 63 Angle 64 Mounting shaft 7 Handle 8 Cleaning surface 9, 9 'Gap

Claims (1)

In the cleaning device provided with wheels before and after the traveling direction of the base, with a dust collecting chamber at the top, and with a rotating brush that rotates in the direction opposite to the wheel in the vicinity of the rear wheel and scrapes the dust toward the dust collecting chamber,
A dust guide member is rotatably attached to the base via an attachment shaft at a lower part of the dust collection port of the dust collection chamber,
The dust guide member includes a dust guide wall inclined in a moving direction of the base from a lower end to an upper end so as to guide the scraped dust to the dust collection chamber, and a lower surface of an upper and lower middle portion of the dust guide wall. It is composed of a flexible leakage prevention wall that is directed downward from the lower end and is in contact with the cleaning surface and prevents the dust from entering the cleaning device while preventing leakage to the outside of the cleaning device,
A predetermined gap is provided between the lower end of the dust guide wall and the cleaning surface.
Cleaning device.

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