JPH0529450B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner equipped with a rotating brush for removing dust attached to a surface to be cleaned.

Configuration of Conventional Example and Its Problems Conventionally, vacuum cleaners equipped with a rotating brush for separating dust attached to the surface to be cleaned from the surface to be cleaned have been known.

Its configuration will be explained based on FIG.

In the figure, 1 is a vacuum cleaner main body, and an electric blower 2 is installed inside the vacuum cleaner main body 1. Reference numeral 3 denotes a floor nozzle rotatably attached to the tip of the vacuum cleaner body 1, inside which a rotary brush 4 is rotatably supported by bearings 5 at both ends, and connected to a rotary brush electric motor 6 and a belt 7. Therefore, the rotating brush 4 is rotated. Dust separated from the surface to be cleaned by the rotating brush 4 is sucked into a dust collection chamber 11 configured below the filter 10 through a suction port 8 and a suction passage 9. The conventional vacuum cleaner described above has the disadvantage that it is not possible to clean the corners of the floor because the rotary brush 4 cannot be positioned fully on both sides of the floor nozzle 3 due to its structure. This drawback is especially noticeable in jutans, which use rotating brushes for cleaning. That is, because the corners around the room cannot be cleaned sufficiently, after a long period of use, there is a noticeable difference between the cleaned surfaces and the uncleaned surfaces.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional drawbacks, the present invention attempts to clean corners of rooms that cannot be cleaned by vacuum suction. Therefore, the vacuum suction hose can be easily attached and detached from the vacuum cleaner, and just by positioning the vacuum cleaner in a state other than normal use, the suction from the floor nozzle is automatically switched to the suction from the hose. This provides a vacuum cleaner that is extremely easy to use.

Structure of the Invention In order to achieve this object, the vacuum cleaner of the present invention has a floor nozzle that forms two suction systems: a first suction part that has a built-in rotating brush and a second suction part that communicates with an external hose. a vacuum cleaner body having an electric blower and a filter disposed on its suction side; and a connecting pipe connected to the floor nozzle so as to be vertically rotatable and provided in the vacuum cleaner body so as to communicate with the suction side of the electric blower. The connecting pipe is provided with a rotating brush-side suction port and a hose-side suction port that selectively communicate with the first and second suction portions depending on the vertical rotation angle of the connecting pipe.

Therefore, by changing the rotational position of the connecting pipe, that is, the vertical angle of the cleaner body, the first suction part or the second suction part of the floor nozzle can be opened. When the first suction section is open, normal cleaning using a rotating brush can be performed.
When the second suction section is open, the hose can be used to clean corners of the room.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 2 to 5,
12 is a vacuum cleaner body; 13 is a floor nozzle rotatably attached to the cleaner body 12; and 14 is a handle attached to the cleaner body 12. An electric blower 15 is supported by support rubber 16 inside the cleaner body 12 and drives an electric motor belt 17. The other end of the motor belt 17 is hung around a pulley 18 and transmits rotational force to a power transmission shaft 19 made of a flexible wire or the like. A dust box 20 has a built-in filter 21. 22 is a connecting pipe formed integrally with the vacuum cleaner main body 12;
The rotation shaft 23 connects the floor nozzle 13 and the vacuum cleaner body 12.
It is rotatably attached. Power transmission shaft 19
is connected to an intermediate shaft 24 provided within the floor nozzle 13 and drives a rotating brush 26 via a rotating brush belt 25. The connecting pipe 22 is provided with a rotating brush side suction port 27 and a hose side suction port 28 . Reference numeral 29 indicates the hose side suction port 2 when the vacuum cleaner main body 12 is placed in a state other than normal use, for example, in an upright state.
8 is a hose connection pipe connected to the floor nozzle 13. A hose 30 is connected to the hose connection pipe 29 and is provided in parallel with the cleaner body 1, and is detachably supported by a hose hook 32 provided on the cleaner body 12. Reference numeral 31 denotes a rotating brush chamber containing a rotating brush 26, which is connected to the rotating brush side suction port 27 during normal use when cleaning by tilting the cleaner body 12, and is otherwise closed.

Regarding the vacuum cleaner configured as above,
The operation will be explained below.

FIG. 4 shows the vacuum cleaner main body 12 in an upright state. When the electric blower 15 is operated in this state, suction is performed from the hose 30 because the hose-side suction port 28 is open to the hose connection pipe 29 at the connection pipe 22. On the other hand, in the state shown in FIG. 5 (with the vacuum cleaner main body 12 on the floor), the rotating brush side suction port 27 is open to the rotating brush chamber 31, so suction is performed from the rotating brush chamber 31. In this way, the suction can be switched depending on the angle of the cleaner main body 12, so the hose 30 can be used to clean the corners of the room.

In the case of the embodiment of the present invention, assuming that the state in FIG. 4 is 90 degrees and the state in FIG. If it is longer than that, hose connection pipe 2
Start inhaling from step 9. However, this angle is not necessarily limited to the above numerical value.

Further, in the embodiment of the present invention, the rotating brush 26 is rotated by the electric blower 15 via the power transmission shaft 19, thereby making the floor nozzle 13 smaller and lighter and improving usability. In order to achieve the purpose of suction by
Alternatively, an air turbine type rotating brush bed nozzle may be used.

Furthermore, when the vacuum cleaner main body 12 is stood upright and suction is being performed through the hose 30, it is desirable that the rotating brush 26 is stopped. For this purpose, for example, in the case of a rotary brush type floor nozzle with a built-in electric motor, there is a method of detecting when the cleaner main body 12 is in an upright position and stopping the electric motor. The basic elements of the present invention have been described above in detail with respect to one embodiment, but various applications as shown in the above example naturally fall within the scope of the present invention.

In short, in order to easily clean corners that cannot be cleaned with a rotating brush, a corner cleaning hose is installed, and the suction from the floor nozzle and the suction from the hose are automatically switched depending on the inclination angle of the vacuum cleaner itself. be.

Effects of the Invention As explained above, the vacuum cleaner of the present invention sufficiently maintains the cleaning effect of the conventional floor nozzle with a built-in rotary brush, while at the same time solving the disadvantage of not being able to clean corners with the vacuum cleaner. This will solve the problem. Furthermore, when the vacuum cleaner body is rotated to an angle other than normal use, the suction is automatically switched from the floor nozzle to the hose, making it extremely easy to use.

[Brief explanation of the drawing]

Fig. 1 is a sectional view from the front of a conventional vacuum cleaner, Fig. 2 is a sectional view from the side of a vacuum cleaner according to an embodiment of the present invention, Fig. 3 is a sectional view from the front, and Fig. 4 is a sectional view from the front. 5 are enlarged sectional views of main parts showing two types of usage conditions. 12... Vacuum cleaner body, 13... Floor nozzle, 22
... Connection pipe, 23 ... Rotating shaft, 26 ... Rotating brush, 27 ... Rotating brush side suction port, 28 ... Hose side suction port, 29 ... Hose connection pipe, 30 ... Hose, 31 ... Rotating brush room.

Claims (1)

[Claims] 1. A vacuum cleaner body having a floor nozzle forming two suction systems: a first suction part with a built-in rotating brush and a second suction part connected to an external hose, an electric blower, and a filter disposed on the suction side thereof. and a connecting pipe that is connected to the vacuum cleaner body so as to communicate with the suction side of the electric blower, and is connected to the floor nozzle so as to be able to rotate vertically, and the connecting pipe has the above-mentioned airflow according to the vertical rotation angle of the connecting pipe. A vacuum cleaner having a rotating brush-side suction port and a hose-side suction port that selectively communicate with first and second suction parts.