JP3024382B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to an electric vacuum cleaner that have a rotary brush paintings Ah turbine drive.

[0002]

2. Description of the Related Art In a conventional vacuum cleaner, a rotary brush is provided at a suction port in order to enhance dust-absorbing performance, and an air turbine is used for driving the rotary brush. Examples of this are disclosed in JP-A-2-65826 and JP-A-1-1-1.
There is one described in JP-A-06321.

[0003]

In the above-mentioned conventional vacuum cleaner, a rib is provided to reduce noise generated when the rotary brush is driven by an air turbine.
To make the air turbine inexpensive, the teeth that stretch the belt are integrated with the shaft.

However, in these conventional examples, no consideration has been given to the increase in the weight of the handling portion including the hose and the suction portion of the vacuum cleaner by providing the rotary brush at the suction portion, and the ease of use.

An object of the present invention is to reduce the weight of the handling unit of the electric vacuum cleaner equipped with a rotary brush is to provide a preparative扱性good vacuum cleaner.

Another object of the present invention is to reduce the ventilation resistance.
Another object of the present invention is to provide a vacuum cleaner suitable for increasing the output of an air turbine .

[0007]

To achieve the above object, a vacuum cleaner according to the present invention comprises an electric blower and the electric blower.
Vacuum cleaner with control circuit to control air pressure
Connected to the body and a suction port provided in the vacuum cleaner main body.
Flexible hose, said flexible hose
A grip connected to the end opposite to the end connected to the suction port;
At the opposite end of the holding section to the flexible hose.
At least one extension pipe to be cut,
Is connected to the opposite end of the connection with the
And an air turbine that rotates the rotary brush
To the vacuum cleaner main body side from the suction part to be
Wirelessly sends a signal to command the air pressure of the electric blower
Transmitting and receiving means, and transmitting the transmitting and receiving means to the grip portion
And a battery serving as a power source on the side.

[0008] At this time, the transmitting and receiving means uses the electric power from the gripper.
Apply either sound waves, light, or radio waves to the vacuum cleaner
It is recommended that the light be reflected on the ceiling, wall, etc. and transmitted.

The inner surface of the flexible hose is smooth.
It is good to

[0010]

[Action] turn the rotary brush of the mouthpiece part in the air turbine
Since the roller is driven to rotate, power wiring is not required for both the flexible hose and the hard extension tube. In addition, the power is
Wirelessly instructs the air flow pressure of the electric blower to the vacuum cleaner body
And transmit the power to the transmitter.
Battery in the gripping part,
With the built-in wireless remote control,
It is necessary to provide power supply wiring and signal lines in the kibble hose.
Disappears.

As a result, both the rigid extension pipe and the flexible hose need to be thickened to protect the wiring.
It can be thinner and lighter. On the other hand, the rotary brush
The number of rotations is a signal sent from the gripper, and the air pressure of the electric blower
It can be changed by changing the force. This
Thereby, a mechanism such as tatami / carpet switching is not required in the mouth portion, and the weight can be reduced. In addition, the operator has a cleaning posture
Switching between tatami and carpet is possible as it is, and handling is improved.

Further, the electric wiring of the flexible hose is
Reduces unevenness on the inner surface of the hose by eliminating the need
Therefore, the ventilation resistance in the hose can be reduced.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the entire vacuum cleaner. The vacuum cleaner includes a vacuum cleaner main body 1, a flexible hose 2, a vacuum cleaner operation unit 3, a wireless remote controller 4, a hard extension tube 5, and a suction unit 6. The flexible hose 2 and the hard extension tube 5 are wireless without built-in power wiring, and the hard material extension tube has a telescopic structure. FIG. 2 is a cross-sectional view showing a detailed structure of the suction portion 6. The suction portion 6 is provided with an air turbine 7, a rotary brush 8, and a timing belt 9 for transmitting the rotational force of the air turbine 7 to the rotary brush. The air turbine drive system eliminates the need for power wiring in the suction port and the hard extension pipe. On the other hand, by providing a wireless remote controller having a built-in power supply in the handle portion, power supply from the cleaner body to the flexible hose is unnecessary. Then, the electric system of the cleaner body can be operated by the wireless remote controller. As a result, it is possible to avoid disconnection of the internal wiring due to deformation of the hose that occurs during operation or storage of the vacuum cleaner, and excessive rigidity and thickness of the hose for preventing the disconnection, and reduce the weight of the suction part. At the same time, the reliability of the vacuum cleaner can be improved. In addition, there is an effect that noise from the suction port is reduced as compared with the motor drive. According to the experiments by the inventors, the noise of the air turbine drive system according to one embodiment of the present invention was about 3 dB smaller than that of the motor drive system.

FIG. 3 is a sectional view showing the cleaner operating section 3 according to one embodiment of the present invention. A handle 10, a wireless remote controller 4, an extension pipe mounting port 11, and a flexible hose mounting port 12 are formed in the operation unit. Wireless remote control 4
Is a power supply voltage supplied from, for example, an AA battery, and includes a transmitting unit 4b, 4c having a transmitting circuit for transmitting a sound wave, light, or a radio wave by pressing a push button 4a.
have. The signal from the oscillation circuit is reflected on the ceiling or side wall surface of the room, and reaches the cleaner body 1. On the upper surface of the vacuum cleaner main body 1, a receiving unit 20 for receiving a sound wave, light or radio wave transmitted from a wireless remote controller is formed, a processing circuit for performing signal processing on a signal from the receiving unit, and an internal motor. And a control circuit for instructing and operating various operation commands to the electric system are provided inside the cleaner body. In this embodiment, two transmitting sections are provided.
It is needless to say that three or more locations may be provided to reliably transmit signals even in a complicated arrangement. Furthermore, the receiving unit is not limited to the upper surface of the main body as long as the receiving unit can easily receive the reflected signal, and the number thereof is not limited to one. As the command signal from the wireless remote controller, there are ON / OFF of the power of the vacuum cleaner, switching of tatami / carpet, flow control at the time of suction clogging, and the like. These signals are switched. Conventionally, the switching of the tatami / carpet is performed by a lever or the like provided in the suction portion. However, according to the present embodiment, the switching can be performed in the cleaning posture, the usability of the vacuum cleaner is improved, and an extra portion is provided in the suction portion. There is no need to provide a simple mechanism, and the weight of the mouthpiece can be reduced.

FIG. 4 is a view showing a rigid extension tube 5 according to one embodiment of the present invention. (A) of the figure is a top view, and (b) is a longitudinal sectional view. According to this embodiment, a power line is not required for the hard extension pipe, and a structure in which a plurality of hard extension pipes can be extended and contracted as shown in FIGS. There is a fixing groove 5d at the joint of the plurality of extension tubes, and the length of the extension tube can be fixed to an arbitrary length by the one-touch button 5c. At both ends of the hard extension tube, there are a mounting port 11a with the operation section 3 and a mounting port 11b with the suction section 6, and each is pushed in and fixed by pushing a button. With this configuration, the length can be easily changed according to the configuration of the room or the height of the operator, and the operability of the vacuum cleaner is improved. further,
In this embodiment, since the wiring is not built in the extension tube,
The thickness of the extension tube, which was conventionally thickened to protect the wiring, can be reduced, and the weight can be reduced. In addition, since there is no wiring even if the thickness is reduced, there is no protrusion of the wiring portion on the inner wall of the pipe, and the inner wall of the pipe can be made smooth, and there is also an effect that the ventilation resistance can be reduced.

FIG. 5 is a sectional view showing a flexible hose 2 according to one embodiment of the present invention. Since the inner surface of the flexible hose has a small unevenness and is formed smoothly, the ventilation resistance is small. In addition, hose
Light-weight meandering projections 2a are formed to maintain the strength of the metal. These projections are obtained by forming the hose in a bellows shape, and maintain the light weight, high strength, and flexibility of the hose. At both ends of the flexible hose 2, an attachment port 12a for the cleaner body 1 and an attachment port 12b for the operation section 3 are provided, and each can be pushed in and fixed by a one-touch button. Note that the meandering projection can be formed in a spiral shape. In this case, if the shape of the mounting port is also helical, the mounting of the mounting port to the hose can be achieved by screwing in, which facilitates the mounting. Furthermore, if the hose is broken during use, the damaged part can be easily cut with scissors, etc., so that it can be easily used by removing the damaged part and screwing the mounting part along the spiral of the protrusion and mounting. Become. Furthermore, according to the present embodiment, even if a long flexible hose is required for cleaning the stairs and the second floor when the cleaner body is placed on the first floor, the hose can be easily used at home according to the required length. There is also an effect that can be adjusted.

FIG. 6 shows a cross section when a plurality of flexible hoses are connected in another embodiment of the present invention. At the time of regular cleaning, attach one flexible hose of the same length as before to clean, and when a long flexible hose is required for cleaning stairs, connect another flexible hose to the flexible hose as shown in Fig. 6. It can be used as a flexible hose of the required length. The flexible hoses are connected to each other with a structure in which the mounting ports can be fixed with one-touch buttons. In this case, the hose may be screwed in using the protrusion on the outer surface of the hose as in the above-described example. With this configuration, the flexible hose can be easily assembled, and there is no need to provide an extra mechanism. Therefore, the thickness of the flexible hose can be reduced, and the weight can be reduced.

Further, by reducing the weight of the flexible hose and the extension tube, there is no need to move the heavy cleaner main body, the power cord connected to the cleaner main body can be shortened, and the safety is improved. Further, the weight of the operator's hand during cleaning is reduced, and a vacuum cleaner with good handleability can be obtained.

When the rotary brush at the suction port of the conventional vacuum cleaner is driven by an air turbine, the suction power of the main body of the cleaner is 350 W or less. If a long hose is connected in place of the hose, the airflow resistance of the hose increases and the air volume at the suction port decreases. As a result, the performance of the air turbine deteriorated and the rotary brush did not reach the required rotation speed, so that a long hose could not be used. In the present invention,
Since the vacuum cleaner with a suction power of 360 W or more is combined with a suction unit having a rotary brush driven by an air turbine as a driving source, even if the ventilation resistance increases when a long hose is used, the suction unit is required to have a required suction force. The air volume can be secured, and the air turbine and the rotary brush can be driven at a required rotation speed.

[0020]

According to the present invention, a flexible hose,
In addition to reducing the weight of the extension tube and the suction port,
Change the number of rotations of the rotary brush without changing the removal posture
The handling can be improved.

Further, the unevenness on the inner surface of the hose should be reduced.
Air flow resistance inside the hose can be reduced,
-The output of the turbine can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a mouth portion according to one embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a handle according to one embodiment of the present invention.

FIG. 4 is a top view and a longitudinal sectional view of a rigid extension tube according to an embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a flexible hose according to one embodiment of the present invention.

FIG. 6 is a view showing a state in which flexible hoses according to one embodiment of the present invention are connected to each other.

[Explanation of symbols]

1 ... vacuum cleaner main body, 2 ... flexible hose, 3 ...
Vacuum cleaner operation unit, 4 ... wireless remote control, 5 ... extension tube,
6 ... Suction part, 7 ... Air turbine, 8 ... Rotary brush, 9 ... Belt, 10 ... Handle, 11 ... Extension pipe mounting opening, 1
2 ... flexible hose attachment port, 13 ... hose connection pipe.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsumasa Mikami 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Plant, Hitachi, Ltd. (72) Inventor Masao Sunagawa 1-chome, Higashitaga-machi, Hitachi City, Ibaraki Prefecture No. 1-1 Inside the Taga Plant of Hitachi, Ltd. (56) References JP-A-2-65826 (JP, A) JP-A-58-221924 (JP, A) JP-A-2-172433 (JP, A) Kaihei 3-210226 (JP, A) Japanese Utility Model Showa 56-19163 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/04, 9/28

Claims (3)

(57) [Claims] 1. An electric vacuum cleaner having an electric blower and a control circuit for controlling an air volume pressure of the electric blower, a flexible hose connected to a suction port provided in the electric vacuum cleaner, A grip portion connected to an end opposite to a connection end with the suction port, at least one extension pipe provided at an end opposite to a connection end of the grip portion with the flexible hose, and a grip portion of the extension tube. A suction end connected to the opposite end of the connection end, having a rotary brush and an air turbine that rotationally drives the rotary brush,
A transmission / reception unit that wirelessly transmits a signal for instructing an air pressure of the electric blower from the grip unit to the main body of the electric vacuum cleaner, and a battery serving as a power supply on a transmission side of the transmission / reception unit in the grip unit. The vacuum cleaner characterized by the above. 2. The vacuum cleaner according to claim 1, wherein said transmission / reception means reflects any one of a sound wave, light, and a radio wave from said grip portion toward said vacuum cleaner main body toward a ceiling or a wall in a room. Vacuum cleaner characterized by transmitting by sending. 3. The vacuum cleaner according to claim 1, wherein the flexible hose has a smooth inner surface.