JP2629167B2 - Electric vacuum cleaner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a rotating brush for removing dust adhering to a surface to be cleaned.

2. Description of the Related Art Structure and Problems of the Conventional Example Conventionally, an electric vacuum cleaner having a rotating brush for separating dust adhering to a surface to be cleaned from the surface to be cleaned has been known.

The configuration will be described with reference to FIG. 1. In the figure, reference numeral 1 denotes a cleaner body, in which an electric blower 2 is provided. Reference numeral 3 denotes a floor nozzle rotatably attached to the tip of the cleaner main body 1. A rotary brush 4 is rotatably supported by a bearing 5 inside the floor nozzle, and the rotary brush 4 is rotated by a rotary brush motor 6 and a belt 7. Is done. Dust separated from the surface to be cleaned by the rotating brush 4 is sucked from the suction port 8 through the suction passage 9 into the dust collection chamber 11 formed below the filter 10.

The conventional vacuum cleaner described above has a drawback in that the corners of the floor cannot be cleaned because the rotary brush 4 cannot be positioned to the full extent on both sides of the floor nozzle 3. In particular, in a jutan having a large cleaning effect due to the rotating brush, the drawback appears strongly. That is, since the corners around the room cannot be cleaned sufficiently, the cleaned surface and the non-cleaned surface appear as a remarkable difference after long-term use.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional drawbacks, and has an object to clean a corner of a room, which cannot be cleaned, by vacuum suction. Therefore, the suction from the floor nozzle and the suction from the hose are switched by a simple switching device, and an extremely useful vacuum cleaner is provided.

The vacuum cleaner of the present invention comprises a floor brush of a rotary brush type with a built-in electric motor, and a cleaner main body rotatably attached to the floor nozzle, and is provided in a connecting pipe portion between the floor nozzle and the cleaner body. A switching device for providing a rotary brush side suction port for suctioning from a floor nozzle and a hose side suction port for suctioning from an external hose, and switching suction force from a connection pipe to a rotating section brush side suction port or a hose side suction port. And detecting the upright state of the cleaner body and stopping the electric motor of the floor nozzle. That is, when the rotary brush side suction port is used, the hose side suction port is closed, and in the opposite case, suction force is generated only at the hose side suction port. In addition, the electric motor of the floor nozzle is stopped when the cleaner body is in the upright state, so that the rotary brush stops when suction is being performed from the hose.

DESCRIPTION OF THE EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. 2 to 6, reference numeral 12 denotes a cleaner main body, 13 denotes a floor nozzle rotatably attached to the cleaner main body 12, and 14 denotes a handle attached to the cleaner main body 12. An electric blower 15 is supported by a 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 on a pulley 18 and transmits a rotational force to a power transmission shaft 19 formed of a flexible wire or the like. Reference numeral 20 denotes a dust box having a built-in filter 21. Reference numeral 22 denotes a connecting pipe integrally formed with the cleaner main body 12, and the floor nozzle 13 and the cleaner main body 12 are rotatably attached to each other by a rotation shaft 23. The power transmission shaft 19 is an intermediate shaft provided in the floor nozzle 13.
24 is connected to the rotating brush via the rotating brush belt 25
Drive 26. The connecting pipe 22 is provided with a rotary brush side suction port 27 and a hose side suction port 28. Hose side suction port 28
The other end of the hose connecting pipe 29 is opposed to the hose connecting pipe 31 via the partition plate 30 at a position facing the hose connecting pipe 31. The partition plate 30 is provided with a communication port 32, and serves to open and close an air passage between the hose connection pipe 31 and the hose connection pipe 31 facing the hose connection pipe 29. Reference numeral 33 denotes a knob provided on the partition plate 30 for moving the partition plate 30 in the direction of the arrow in FIG. 34 is a flexible hose connected to the hose connection pipe 31, 35 is a hose fitting for holding the hose 34 in parallel with the cleaner body 12, and 36 is a rotating brush chamber.

The operation of the vacuum cleaner configured as described above will be described below.

When the partition plate 30 is in the state shown in FIGS. 5 and 6 (that is, the rotary brush side suction port 27 is opened to the rotary brush chamber 36, and the hose connecting pipe 29 is closed by the partition plate 30 from the hose connecting pipe 31). ), Suction is performed only from the rotating brush chamber 36. Conversely, when the rotary brush side suction port 27 and the rotary brush chamber 36 are closed by the partition plate 30 in the state shown in FIG.
Then, the hose connection pipe 31 is opened, so that a suction force is generated in the hose 35.

The specific passage switching device in the embodiment of the present invention described above is not limited to the present embodiment, and the suction of the connection pipe 22 is performed by the rotation brush chamber 36 side and the hose 35.
What is necessary is just to have the function of switching to the side.

In the embodiment of the present invention, the rotation of the rotary brush 26 is performed by the electric blower 15 through the power transmission shaft 19 and the floor nozzle 13 is rotated.
In order to achieve the purpose of suction by the hose 34, a motor for driving a rotary brush may be provided in the floor nozzle. A rotary brush floor nozzle may be used.

Further, when the cleaner main body 12 is upright and suction from the hose 34 is being performed, it is desirable that the rotating brush 26 be stopped. For this purpose, for example, in the case of a rotary brush type floor nozzle with a built-in motor, when the cleaner body 12 is in an upright state, there is a method of detecting this and stopping the motor.

As described above, the basic elements of the present invention have been described in detail in one embodiment. However, various examples shown in the above-described examples naturally fall within the scope of the present invention.

Effects of the Invention As described above, the vacuum cleaner of the present invention can sufficiently maintain the cleaning effect of the conventional rotary brush built-in floor nozzle,
On the other hand, the point that the corner cannot be cleaned, which was a disadvantage, is eliminated by switching the switching device and the hose, and the motor of the floor nozzle is stopped when the cleaner body is upright, so suction from the hose When the operation is performed, the rotating brush can be stopped.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the conventional vacuum cleaner from the front, FIG. 2 is a cross-sectional view of the vacuum cleaner in one embodiment of the present invention from the side, FIG. Fig. 5 is an enlarged sectional view of the essential part, Fig. 5 is an enlarged sectional view of Fig. 3 AA ', and Fig. 6 is a perspective view for explaining the essential part. 12 ... vacuum cleaner body, 13 ... floor nozzle, 15 ... electric blower, 22 ... connecting pipe, 26 ... rotating brush, 27 ... rotating brush side suction port, 28 ... hose side suction port, 30 ... ... Switching device (partition plate), 34 ... Hose.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-501791 (JP, A) JP-A-49-64263 (JP, A) JP-A-49-48161 (JP, A) 96123 (JP, A) Fully open 58-35340 (JP, U) Fully open 58-130643 (JP, U) Fully open 56-44647 (JP, U) Fully open 51-29757 (JP, U) Japanese Utility Model Showa 57-194449 (JP, U) Japanese Utility Model Showa 59-130654 (JP, U) Japanese Utility Model Showa 57-202854 (JP, U) Japanese Utility Model Showa 54-124351 (JP, U) Japanese Utility Model Showa 62-17021 (JP, Y2) Jiko 26901 (JP, Y2)

Claims (1)

(57) [Claims] A rotary brush floor nozzle with a built-in electric motor;
It consists of a vacuum cleaner body rotatably attached to this floor nozzle, and a rotary brush side suction port that sucks in from the floor nozzle and a hose side suction that suctions from an external hose in the connection pipe between the floor nozzle and the cleaner body. And a switching device for switching the suction force from the connection pipe to the rotary brush side suction port or the hose side suction port, and the vacuum cleaner main body detects an upright state and stops the motor of the floor nozzle. Vacuum cleaner.