JPS6120527A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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.

2. Description of the Related Art Conventional Structures and Problems There have been conventionally known vacuum cleaners equipped with rotating brushes to separate dust adhering to surfaces to be cleaned from surfaces to be cleaned.

The configuration will be explained based on FIG.
is installed inside. 3 is a floor nozzle rotatably attached to the tip of the vacuum cleaner body 1, and a rotating brush 4 is installed inside the floor nozzle.
is rotatably supported by a bearing 5, and the rotating brush 4 is rotated by a rotating brush electric motor 6 and a belt 7.

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 it is structurally impossible to position the rotating brush 4 all the way to both sides of the floor nozzle 3.

This drawback is particularly noticeable in the cleaning machine, which has a large cleaning effect due to its rotating brush. 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 drawbacks of the prior art, the present invention attempts to clean corners of a room that cannot be cleaned by vacuum suction.

Structure of the Invention In order to achieve the present invention, the vacuum cleaner of the present invention has a rotary brush side suction port for sucking from the floor nozzle and a hose side suction port for sucking from an external hose at the joint between the vacuum cleaner body and the floor nozzle. Two suction ports are provided, and both suction ports are provided with a switching mechanism that switches to only one of the suction ports by attaching and detaching an external hose to the hose-side suction port. In other words, when the external hose is inserted into the hose side suction port, the hose side suction port opens and the rotating brush side suction port closes, and when the external hose is removed, the hose side suction port closes and the rotating brush side suction port closes. The structure is such that the brush side suction port opens.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.
I will explain it while referring to it. In FIGS. 2 to 6, reference numeral 12 indicates a main body of the vacuum cleaner, reference numeral 13 indicates a handle attached to the main body 12 of the vacuum cleaner, and a floor nozzle 14 is rotatably attached to the main body 12 of the vacuum cleaner. An electric blower 16 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. 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 via a rotating shaft 23. Power transmission shaft 1
9 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 . 29 is a switching valve that always closes the hose side suction port 28, and constitutes a switching mechanism for the suction port. 30 is a switching valve rotation shaft. Reference numeral 31 denotes an external hose which, when connected to the hose side suction port 28, pushes the switching valve 29 to close the rotating brush side suction port 27.

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

When the switching valve 29 is in the state shown in FIG. 4 (that is, the rotating brush side suction port 27 is open and the hose side suction port 28 is closed by the switching valve 29), the rotating brush chamber 3
Suction is performed only from 2. On the contrary, in the state shown in FIG. 5, suction is performed only from the external hose 31, and the rotating brush side suction port 27 is closed by the switching valve 29.

The switching valve 29 rotates around the switching valve rotation shaft 30 to the positions shown in FIGS. 4 and 6, but in its normal state it rotates due to the action of a rotation spring (not shown). It is in the state shown in Figure 4. The switching valve 29 is pressed against the hose-side suction port 28 against the vacuum pressure generated in the connecting pipe 22 by the biasing force of a rotation spring (not shown). This is to prevent air leakage from the hose side suction port 28 by the switching valve 29, and to make it more perfect, the surface of the switching valve 290 may be coated with rubber or foamed resin may be attached. It is naturally conceivable to have the structure of

When the external hose 31 is inserted into the hose side suction port 28, the fifth
As shown in the figure, the switching valve 29 is rotated to close the rotating brush side suction port 27.

As described above, the external hose 31 is connected to the hose side suction port 28.
The switching valve 29 rotates in conjunction with the operation of attaching and detaching the suction port to switch between the two suction ports, and has a very simple structure and can perform the switching reliably.

In addition, in the embodiment of the present invention, 260 rotations of the rotating bluff are:
This is achieved by an electric blower 16 built into the vacuum cleaner body 12 via a power transmission shaft 19, making the nozzle 13 smaller and lighter and improving usability.
In order to achieve the purpose of suction by 1, an electric motor for driving a rotating brush may be provided in the floor 7' nozzle.

Further, when suction is being performed using the external hose 31, it is preferable that the rotating fringe 26 is stopped. For this reason, for example, in the case of a floor nozzle of a rotary brush type formed in a motor, there is a method of providing an electric switch that is linked to the movement of the switching valve 29.

Similarly, in the embodiment of the present invention, a method such as providing a clutch on the power transmission shaft 19 and operating the clutch in conjunction with the movement of the switching valve 29 can also be used.

Although the basic elements of one embodiment of the present invention have been described in detail above, various examples such as those shown in the above example naturally fall within the scope of the present invention.

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 rotating brush, while solving the drawback of not being able to clean corners. This can be resolved with an external hose. Since the suction can be switched by attaching and detaching the external hose, the operability is extremely good and reliable switching can be performed.

[Brief explanation of the drawing]

Fig. 1 is a sectional view from the front showing 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, and Fig. 3 is a sectional view from the front view. Figure 4 is an enlarged sectional view of the main parts from the same front, and Figure 5 is an enlarged sectional view of the main parts when using an external hose.
・Connection pipe, 26...Rotating brush, 27...Rotating brush side suction port, 28...Hose side suction port, 2
9...Switching valve, 31...External hose. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure ◇ 4 δ Figure 2 Section 3 Figure 4

Claims (1)

[Claims] It consists of a floor nozzle with a built-in rotating brush, and a vacuum cleaner body that can freely rotate between the floor nozzle and the vacuum cleaner body.At the joint between the floor nozzle and the vacuum cleaner body, there is a rotating brush side suction port that draws suction from the floor nozzle, and a suction port that draws suction from an external hose. Provide a hose side suction port to
The vacuum cleaner is equipped with a switching mechanism that switches between the two suction ports by attaching and detaching an external hose to the hose-side suction port.