JPH02114Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a vacuum cleaner equipped with a rotating brush.

[Conventional technology]

Conventional vacuum cleaners of this kind have a main body with a built-in motor, and a rotating brush driven by the motor is installed in the suction opening of the main body. A fan is provided to guide the dust into the dust collection chamber, and the dust scraped up and floated by the rotating brush is guided to the dust collection chamber along with suction air, where it is captured and stored.

Here, the ventilation path from the suction opening to the fan is
Although it is usually straight, the ventilation path between the rotating brush and the fan is designed to prevent dust from clogging inside the ventilation path or inside the fan case after the dust collection chamber is full of dust. For example, Japanese Patent Publication No. 52-4106 shows a structure in which a curved path is formed using a baffle plate or the like.

[Problem that the invention attempts to solve]

However, according to the conventional vacuum cleaner, when there is relatively heavy dust such as pebbles on the surface to be cleaned, if this is swept into the ventilation passage by the rotating brush,
This type of dust is not sucked in by the fan, so if the ventilation path is straight, the dust that has been sucked in will fall back to the suction opening side and hit the rotating brush surface, causing a loud impact noise and creating a dangerous situation. Therefore, if there is dust that cannot be sucked in, it is necessary to turn off the power to the vacuum cleaner and remove it by hand.

In addition, with this type of vacuum cleaner, even if the dust is relatively light, if the power is turned off in the middle of suctioning the dust, the dust will fall from the ventilation path through the suction opening and onto the surface being cleaned. There are some inconveniences if it remains on the surface.

Furthermore, in the case of the device disclosed in the above-mentioned publication, if relatively heavy dust is drawn into the curved path of the ventilation path, this dust can not only be sucked into the dust collection chamber but also fall into the suction opening by the baffle plate. First, there is the problem that dust accumulates inside the curved path, making it difficult to dispose of dust.Furthermore, by forming a curved path in the ventilation path, air resistance increases, and the air flow passes through the curved path. There are inconveniences such as increased noise and decreased air volume.

This invention was made keeping in mind these problems of the conventional technology, and its purpose is to be able to reliably collect even relatively heavy dust, and to also be able to process this dust. The purpose is to provide a vacuum cleaner that can be easily used.

[Means for solving problems]

In order to achieve the above object, the vacuum cleaner of this invention includes a main body having a built-in electric motor, a rotary brush rotatably provided in a suction opening on the lower surface of the main body and driven by the electric motor, and a rotating brush provided in the main body. a fan installed internally and rotated by the electric motor; a ventilation passage that guides air from the suction opening to a first dust collection chamber made of a dust collection bag outside the main body by the suction force of the fan; and a bottom surface of the ventilation passage. a second dust collection chamber formed in a concave shape on a bottom surface of the ventilation passage near the suction opening, and the second dust collection chamber; The device is characterized by comprising a lid that can be opened and closed and forms the bottom surface of the device.

[Effect]

Next, the operation of the above means will be explained.

When the electric motor is driven and the rotating brush is rotated, dust on the surface to be cleaned such as a carpet is scraped up by the rotating brush. At this time, the electric motor also rotates the fan, and the air from the suction opening passes through the ventilation path. In order to reach the first dust collection chamber, the scraped up dust is guided to the first dust collection chamber together with this suction air flow, where it is captured and contained.

Additionally, if there is relatively heavy dust such as pebbles on the surface to be cleaned, this dust will be swept into the ventilation duct by the rotating brush and then try to fall along the slope of the bottom of the ventilation duct. Since a second dust collection chamber is provided at the bottom of the road, the dust enters and is accommodated in the second dust collection chamber.

Furthermore, if you turn off the power to the vacuum cleaner while it is in the middle of sucking in relatively light dust, this dust will try to fall along the ventilation path due to the loss of suction power, but it will be collected in the second dust collection chamber as described above. When the power is turned on again and a suction airflow is generated, the relatively light dust in the second dust collection chamber is guided to the first dust collection chamber by the suction airflow. be done.

〔Example〕

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

First, Figure 3 shows the entire upright type vacuum cleaner. 1 is the main body, and the wheel shaft 2 is located on the rear lower surface.
The rear wheel 3 is rotatably supported by. 4 is a handle rotatably supported around the wheel shaft 2 of the main body 1, and 5 is a dust collection bag suspended on the upper part of the handle 4, the opening edge of which is connected to the exhaust port of the main body 1, which will be described later. It is the first dust collection chamber,
Captures dust.

Next, FIG. 1 and FIG. 2, which show the main body 1 in detail, will be explained. Figure 1 is X- in Figure 2.
The figure shows a case taken along the X' line, where 6 is a suction opening formed on the front lower surface of the main body 1, 7 is a brush storage chamber formed at the front part of the main body 1 and communicating with the suction opening 6;
Reference numeral 8 denotes a rotating brush rotatably housed in the storage chamber 7, and is constructed by arranging brush bodies in a spiral shape around the outer periphery of a cylindrical rotating body, with a part of the brush body extending from the suction opening 6. Lead out to the bottom surface of main body 1.

9 is an electric motor built into the rear part of the main body 1;
It has a rotation shaft in the left and right direction, and the left end of the rotation shaft and the rotating brush 8 are connected by a belt, and the rotating brush 8 is rotated by the drive of an electric motor 9. Reference numeral 10 denotes a fan that is rotatably attached to the right end of the rotating shaft of the electric motor 9 and rotated by the electric motor 9;
1 is a fan casing of a fan 10, and an intake port 12 is formed on the side surface and an exhaust port 13 is formed on the rear surface, and the exhaust port 13 is connected to and communicates with the first dust collection chamber 5.

Reference numeral 14 denotes a linear ventilation passage that communicates the storage chamber 7 with the intake port 12 of the fan casing 11, and the bottom surface 14a of the ventilation passage 14 is formed into an inclined surface that is low on the suction opening 6 side and high on the fan 10 side. Due to the high speed rotation of the fan 10, air in the suction opening 6 is drawn from the storage chamber 7 through the ventilation path 14 into the casing 11 through the intake port 12, and is discharged into the first dust collection chamber 5 through the exhaust port 13. Reference numeral 15 denotes a second dust collection chamber formed in a concave shape on the bottom surface 14a of the ventilation passage 14 on the side of the suction opening 6, and the bottom surface of the dust collection chamber 15 is constituted by a lid 16 that can be opened and closed.

Then, when the electric motor 9 is driven, the rotating brush 8
and the fan 10 start rotating, the dust on the surface to be cleaned is stirred up by the rotating brush 8 and floated in the storage chamber 7, and the fan 10
Due to the suction air flow caused by this, the lifted dust enters the fan casing 11 through the ventilation passage 14, as shown by the arrows in FIGS. 1 and 2, and is further guided to the first dust collection chamber 5. , captured and contained at that location.

Further, when there is relatively heavy dust such as pebbles on the surface to be cleaned, when this dust is stirred into the ventilation passage 14 by the rotating brush 8, the dust is removed by the fan 10.
Therefore, the dust rolls on the bottom surface 14a of the ventilation passage 14 along the slope toward the suction opening 6 side, falls into the second dust collection chamber 15, and is accommodated therein.

Furthermore, if the power is turned off during cleaning, the relatively light dust that is being sucked in will roll or slide down along the bottom of the ventilation path 14 due to the disappearance of the suction airflow, and will fall into the second dust collection chamber 15 as described above. When the power is turned on again, a suction airflow is generated by the fan 10, so relatively light dust in the dust collection chamber 15 is absorbed by this airflow. The dust is sucked into the dust collection chamber 5 and stored in the first dust collection chamber 5.

[Effects of the invention] As described above, according to the vacuum cleaner of this invention, relatively heavy dust, which could not be sucked up conventionally, can be formed in the ventilation passage 14 by using the scraping of the rotating brush 8. This type of dust collection can be accommodated in the second dust collection chamber 15, and there is no danger that the pebbles, etc. that have been scraped in may fall and impact the rotating brush 8. Moreover, even if the power of the vacuum cleaner is turned off, the dust that is being sucked in will not remain on the surface to be cleaned, and dust can be collected reliably.

In addition, since the bottom surface 14a of the ventilation passage 14 is formed as an inclined surface, relatively heavy dust and relatively light dust that is being sucked in when the power is turned off can be reliably and smoothly stored in the second dust collection chamber 15. Furthermore, since the bottom surface of the second dust collection chamber 15 is constituted by the lid 16 which can be opened and closed, it is possible to easily empty dust from the dust collection chamber 15 in a short time.

[Brief explanation of the drawing]

The drawings show one embodiment of the vacuum cleaner of the present invention, and FIGS. 1 and 2 are a cutaway side view and a cutaway plan view of the main body, and FIG. 3 is a side view of the entire vacuum cleaner. 1... Main body, 5... First dust collection chamber, 6... Suction opening,
8... Rotating brush, 9... Electric motor, 10... Fan, 1
4...Ventilation passage, 14a...Bottom surface, 15...Second dust collection chamber, 16...Lid body.

Claims (1)

[Scope of utility model registration request] A main body with a built-in electric motor, a rotating brush rotatably provided in a suction opening on the lower surface of the main body and driven by the electric motor, a fan installed in the main body and rotated by the electric motor, and a suction force of the fan a ventilation passage that guides air from the suction opening to a first dust collection chamber made of a dust collection bag outside the main body; an inclined surface formed on the bottom surface of the ventilation passage and lower on the suction opening side and higher on the fan side; A vacuum cleaner comprising a second dust collection chamber formed in a concave shape on the bottom surface of the ventilation passage near the suction opening, and a lid body that can be opened and closed and forms the bottom surface of the second dust collection chamber. .