JPH0728846B2 - Vacuum cleaner with rotating brush - Google Patents

Description

The present invention relates to a vacuum cleaner with a rotating brush.

Conventionally, it is very difficult to set the number of rotations of an electric vacuum cleaner with a rotating brush. That is, a high rotation speed is suitable for removing dust entangled in the carpet, but a high rotation speed not only shortens the life of the brush bristles, but also removes the carpet bristles and causes the carpet to hurt quickly. The problem arises.

Therefore, an object of the present invention is to efficiently remove dust entangled in a carpet and the like, and to control the number of rotations of the rotary brush so that the pain of the carpet and the like can be reduced. Is to provide.

An embodiment of the present invention is shown in FIGS. In the figure, reference numeral 1 is a cleaner body, and an electric blower 2 utilizing back pressure is provided in the center of the inside thereof. A cord reel unit 3 is built in the rear part of the cleaner body 1, and a removable dust-collecting paper bag 4 is built in the front part. An upper body 5 fixes the cord reel unit 3 with the main body 1 to form an outer shell. 6 is a dust box lid that is detachably attached to the main body 1 so that the paper bag 4 can be replaced, 7 is a rotatable roller that allows the main body 1 to move, 8 is a caster that allows the main body 1 to move, and 9 is the main body 1 It is a handle used when lifting. Reference numeral 10 denotes an intake port provided in the main body 1, to which a flexible hose 11 is detachably joined. 12 is hose 11 at one end
An extension pipe having the other end connected to the suction port member 13.
The hose 11 and the pipe 12 constitute a suction pipe 11 '. Inside the suction member 13, an electric rotating brush (not shown) for releasing dust adhering to the carpet is provided. This electric rotating brush is equipped with an electric motor 14 that drives the brush.
(Fig. 3) is built in. The dust released by the rotating brush is sucked by the back pressure of the electric blower 2, passes through the extension tube 12 and the hose 11, and is captured by the paper bag 4. Reference numeral 15 is a main switch directly connected to the power supply terminal 17a at one end of the power supply cord 17. Reference numeral 16 is a brake button of the cord reel unit 3. The electric blower 2 has a main switch 15 and a power supply terminal 17
It is connected in series with a. Reference numeral 18 is a hand switch, which is connected in parallel with the diode 20, the circuit connected in parallel is connected in series with the electric motor 14, and the one connected in series is connected in parallel with the electric blower 2. Electric motor 14
The lead wire to the hose 11 is built in the hose 11,
An exposed cord 19 is used in the extension tube 12.

Next, the operation of this electric vacuum cleaner with a rotating brush will be described. In normal use, the hand switch 18 is used in the OFF state. At this time, since the motor 14 is connected in series with the diode 20, it rotates at a low speed in a half-wave rectified state. Then, when the hand switch 18 is turned on, the diode 20 is short-circuited, so that a full wave is applied to the electric motor 14 to rotate at high speed. Since the rotation can be controlled in this way, when there is dust adhering to the surface to be cleaned such as carpet or dust caught on the carpet such as lint, turning on the hand switch 18 increases the rotation speed of the rotating brush and easily removes it. It is possible. Further, during normal use, the rotating brush operates at a low speed, so that the carpet is not damaged and the life of the brush is extended. Further, the force of pushing or pulling the suction port member 13 can be reduced by the low speed rotation of the brush, and the operability of the suction port member 13 can be improved. Thus, the simple structure in which the diode 20 is provided has a great effect. In addition, as shown in Fig. 1, by providing a hand switch for the diode 20 on the hand side, the body 20 can be mounted on the body 20 with a foot-hold type.
It is much easier to operate than providing a short switch. In addition, the hand switch 18 is provided with an automatic reset type push button switch, that is, a switch that is turned on only when pressed and turned off when the hand is released, so that it is sufficient to press the hand switch 18 only when cleaning a dirty part, and when released. OF
Become F. Therefore, the switch does not slip and the operation of turning off the switch becomes simple, and the electric motor 14 does not rotate at a high speed more than necessary. Therefore, the carpet is not damaged and the brush life can be extended.

As described above, the electric vacuum cleaner with the rotating brush of the present invention,
Since the electric motor of the electric rotary brush is connected in parallel to the electric blower through the parallel circuit of the hand switch and the diode, the electric rotary brush can be switched between low speed and high speed by opening and closing the hand switch. Therefore, it is possible to rotate the brush at high speed to efficiently remove dust such as carpet when cleaning a heavily soiled part, and to rotate the brush at low speed during normal use to reduce the pain on the carpet and the like, and There is an effect that a long life of the brush can be achieved, the pushing force or the pulling force of the suction port member can be reduced by the low speed rotation of the brush, and the operability of the suction port member can be improved.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a circuit diagram thereof. 1 ... Vacuum cleaner body, 2 ... Electric blower, 11 ... Hose,
11 '... Suction tube, 12 ... Extension tube, 13 ... Suction port member, 17
a: Power supply terminal, 18: Hand switch, 20: Diode

Claims (3)

[Claims] 1. A vacuum cleaner with a rotary brush, comprising: a main body having an electric blower; and a suction port member having an electric rotary brush connected to the main body via a suction pipe, wherein the electric blower is a main switch. Connected to the power supply terminal via
An electric vacuum cleaner with a rotating brush, wherein the electric motor of the electric rotating brush is connected in parallel to the electric blower via a parallel circuit of a hand switch and a diode. 2. A suction hose comprises a flexible hose connected to the main body and an extension tube connected to the flexible hose, and the hand switch is provided in the vicinity of a connection portion of the flexible hose with the extension tube. An electric vacuum cleaner with a rotating brush according to claim (1). 3. An electric vacuum cleaner with a rotating brush according to claim 1, wherein the hand switch is an automatic reset type push button switch.