JPH02147041A - Sucking port for electric cleaner - Google Patents

Abstract

PURPOSE:To present the cleaner of satisfactory handling ability by bringing a brush body into contact with a surface to be cleaned, detecting the current change of a motor due to the difference of the surface and controlling a cleaner main body having a sucking port. CONSTITUTION:When a sucking port 4 for floor is pressed to the surface, bristles 21 of a detecting brush 20 is brought into contact with the floor surface. However, since the height of the bristle 21 is protruded rather than the surfaces of wheels 13 and 14, the bristle becomes resistance when the detecting brush 20 is turned. Then, the current is changed by the torque of a motor 22 for drive. Accordingly, since the value of the current goes to a standard showing the type of the surface to be cleaned, this value is detected by a current detecting device 25 and transmitted to an operation controller 26 and operation control is executed in correspondence to the type of the surface respectively. For example, in the case of nearly no load, a rotational brush 8 is stopped and in the case of the carpet floor, the large current is made flow to a motor 24 for drive and the torque of the rotational brush 8 is improved. Then, cleaning can be efficiently executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vacuum cleaner, and particularly to a vacuum cleaner that is easy to handle and that can detect the condition of a surface to be cleaned and clean it in an optimal condition. Regarding a good mouthpiece.

[Conventional technology]

Some suction ports were designed to detect whether there is contact or non-contact between the floor surface and the suction surface and reduce the suction power of the main unit. There is no such thing, and the user has to change it every time they clean.
Particularly in rooms with wooden floors that are partially covered with carpets, etc., the number of operations required is large, which is cumbersome, and there are problems in terms of ease of handling.

[Problem to be solved by the invention]

As mentioned above, the above-mentioned conventional technology has a problem in that it is not easy to use because the user has to switch it according to the surface to be cleaned.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a vacuum cleaner that is easy to handle and automatically switches depending on the surface to be cleaned.

[Means to solve the problem]

The above object is to provide a vacuum cleaner suction port with a constantly rotating brush body on the same surface as the suction port, and a motor for driving the brush body, in which the brush body comes into contact with the surface to be cleaned. This can be achieved by configuring the present invention as shown in FIG.

[Effect]

The constantly rotating brush body, which is provided on the same surface as the suction port of the suction port, is configured to be in contact with the surface to be cleaned, and the contact resistance between the brush body and the surface to be cleaned changes depending on the surface to be cleaned. It changes with the drive current leakage of the motor for driving the brush body. The detection means can detect the change in the current, recognize the type of surface to be cleaned, and control the cleaner body so that it is always in the optimum state according to the surface to be cleaned.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 3, 1 is the vacuum cleaner body, and 2 is the hose.

3 is an extension pipe, 4 is a floor suction port, 5 is a hose connection part, 6 is a hose joint part, and 7 is a display device.

1 and 2 show the structure of the floor suction port 4. In the figures, 8 is a rotating brush, which has a spiral shape.
The brush 9 is implanted with bristles. 10 is an upper case, 11 is a lower case, and a bumper 12 is sandwiched around the outer periphery.

13 is a front wheel, 14 is a rear tank, and 15 is a joint, which is connected to the extension pipe 3. Reference numeral 16 designates a pair of contact pins provided on the joint 15, which serve as a connection portion for supplying electricity to the floor suction port 4, and are connected to the extension pipe 3, the hose 2, and the cleaner body 1 in this order.

Reference numeral 17 is a suction port of the lower case 11, which is arranged so as to face the rotating brush 8. 18 and 19 are the suction port 17
It is a wind-pressure controlled duck board installed on both sides of the roof, and is a flat plate made of flexible material such as rubber.

Reference numeral 20 denotes a detection brush for detecting the floor surface provided on a part of the bottom surface of the case 11, which has brushes 21 flocked thereon, is connected to a drive motor 22, and is configured to rotate within a horizontal plane with the bottom surface. There is. 23 is an electric motor for driving the rotating brush 8, and power is transmitted through the bells 1 to 24.

FIG. 4 is a block diagram showing the state of electrical connections. A current detection device 25 is connected in series to the electric motors 22 and 24, and detects the flowing current value and transmits a signal to the operation control device 26. There is. Further, the electric motor 24 is connected in series to an operation control device 26. The operation control device 26 is connected to the cleaner body 1, and is further connected to a line 27 that sends a signal indicating the operating state.

To explain the operation with the above configuration, when cleaning, connect the hose 2, extension pipe 3, and floor suction port 4 to the vacuum cleaner body 1,
When operation is started by operating the hand switch located at the bending section 6 of the hose 2, the detection brush 20 rotates. When the floor suction port 4 is pressed against the surface to be cleaned in this state, the brush 21 of the detection brush 20 comes into contact with the floor surface, but since the height of the brush 21 is higher than the surfaces of the wheels 13 and 14,
When the detection brush 20 rotates, it creates resistance, requires torque from the drive motor 22, and increases current.

The resistance mentioned above varies depending on the type of surface to be cleaned.As shown in Figure 5A, the resistance is relatively low for wooden floors 28, etc., while for carpeted floors 29, the resistance is relatively low. 30 is a large resistance.

This relationship is shown in Fig. 6. In the figure, when the floor suction port 4 is separated from the surface to be cleaned (no load), in the case of a wooden floor, and in the case of a carpeted floor, the torque in each case is as follows.
To, T1. It increases with Tz.

In this case, if a DC motor is used as the electric motor 22, the relationship between torque and current is a linear proportional relationship, and the currents To, Tz, and T2 also increase. Therefore, since the current value is a guideline indicating the type of surface to be cleaned, it is detected by the current detection bag W125 and transmitted to the operation control device 26, and the operation is controlled according to the type of the surface to be cleaned, for example. When there is almost no load, the rotating brush 8 is stopped, and when the floor is carpeted, a large amount of current is passed through the drive motor 24 to increase the torque of the brush 8 for one rotation, thereby cleaning the floor efficiently. Automatically optimizes control, such as making it possible to

Moreover, at the same time, if information about the type of surface to be cleaned is transmitted to the cleaner body and the suction force is controlled according to the surface to be cleaned, both the operating force and the removal rate can be improved.

In this example, the current detection device and the operation control device are installed inside the floor suction port, but it goes without saying that the same effect can be achieved even if they are installed inside the hose operation section or the vacuum cleaner itself. stomach.

Furthermore, in this example, the detection brush was used to detect the difference in the surface to be cleaned as a change in current, but any material other than a brush may be used as long as the resistance changes depending on the surface to be cleaned. good.

As described above, according to this embodiment, the following effects can be achieved.

(1) Differences in the type of surfaces to be cleaned are recognized and judged as changes in the contact resistance of the detection brush, and control is automatically adjusted according to the surface to be cleaned, so the user can always optimize the cleaning without making any judgments. Since it can be cleaned in this state, it is easy to handle and can be cleaned efficiently.

(2) Since the suction power of the vacuum cleaner main body can be adjusted according to the surface to be cleaned, cleaning can be performed without consuming more power than necessary.

〔Effect of the invention〕

According to the present invention, it is possible to provide a suction port for a vacuum cleaner that is easy to handle.

[Brief explanation of the drawing]

FIG. 1 is an AA sectional view of the suction port of the embodiment, FIG. 2 is a bottom view of the suction port of the embodiment, FIG. 3 is a perspective view of the vacuum cleaner of the embodiment, and FIG.
The figure is an electric circuit diagram of the embodiment, FIG. 5 is an explanatory diagram of the operation of the detection brush section, and FIG. 6 is an explanatory diagram of the torque-current relationship of the motor. 17... Suction port, 20... Brush body, 22... Electric motor, $2 Diagram ≠ 1 Kasumicha Otsuguchi r'o engineering 1 Leku

Claims (1)

[Scope of Claims] 1. A brush body that constantly rotates is provided on the same surface as the suction port, and an electric motor for driving the brush body is arranged, and the brush body is configured so as to come into contact with the surface to be cleaned. A suction mouthpiece for a vacuum cleaner, further comprising a detection means for detecting a change in the electric current of the motor due to a difference in the surface to be cleaned. 2. A vacuum cleaner, comprising a vacuum cleaner suction port according to claim 1, and controlling the vacuum cleaner body based on the detection result of the detection means.