JPS63315017A - Floor suction jig of 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 <Industrial Application Field> The present invention relates to a floor suction tool for a vacuum cleaner, and particularly to a floor suction tool equipped with a rotating brush body rotationally driven by a motor.

<Conventional technology> Conventionally, in order to effectively clean carpets, etc., a special floor suction tool has been developed that uses a rotating brush to scrape up dust from the surface of the carpet and uses the suction power of the vacuum cleaner itself to suck up the dust. Publication No. 1983-215340, Japanese Patent Publication No. 61/1983
This method has been proposed in, for example, Japanese Patent No. -87519.

<Problems to be Solved by the Invention> The rotating brush provided in this type of floor suction tool is driven to rotate by a small motor built therein, and the brush is rotated by a small motor built into the brush, and the brush is rotated by a small motor built into the brush. When cleaning floor surfaces such as carpets, the switch is turned on and the rotary brush is rotated while cleaning.

However, when cleaning tatami floors, for example, when the rotary brush is rotated, the brush violently scrubs the tatami surface, causing problems such as making a loud noise and easily damaging the tatami surface and the brush. If , switch off the motor,
It is customary to stop the rotating brush when cleaning.

However, the inventor's experiments have shown that when cleaning the surface of tatami mats, if the rotating brush is rotated at a slower speed than when cleaning the carpet, the dust that has entered the tatami mats can be effectively scraped out. It was found that the product was suctioned and did not cause noise or damage to tatami mats or brushes.

The present invention has been made in view of the above points.When cleaning a floor surface such as tatami mats, the rotating brush body rotates at a low speed, and when cleaning a floor surface with hairy texture such as a carpet, the rotating brush body rotates at a low speed.
To provide a floor suction tool for a vacuum cleaner capable of effectively cleaning tatami mats and carpets by automatically rotating a rotating brush body at high speed.

<Means for Solving the Problems> For this purpose, the floor suction tool of the present invention includes a rotating brush body that is rotationally driven by a motor and scrubs the floor surface by the rotation thereof. The suction device has a contact piece capable of contacting the floor surface through the bottom surface, and a first position where the contact piece is retracted upward from the bottom surface when the contact piece comes into contact with the floor surface, and a first position where the contact piece is in contact with the floor surface. A movable contact member that can move six times between a second position in which the contact piece is in substantially the same horizontal position as the bottom surface when not in contact, and a movable contact member that is movable from the second position to the first position. Te thousand
and speed control means for gradually increasing the rotational speed at night.

<Function> When cleaning a tatami floor with the floor suction tool configured as described above, when the suction tool body is placed on the tatami mat, the contact piece of the movable contact member does not come into contact with the floor surface, and the motor is turned off. low speed controlled,
The rotating brush body rotates at a low speed, and the water on the tatami is suctioned well. On the other hand, when cleaning a hairy floor surface such as a carpet, when the suction tool is placed on the carpet surface, the movable contact member is lifted upward via the contact piece by the hair and moved to the first position. As a result, the speed of the motor is controlled to increase, and the rotating brush body rotates at high speed to effectively scrape out dust from the carpet surface, and the dust is suctioned well.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a plan view of a floor suction tool for a vacuum cleaner, FIG. 2 is a bottom view of the same, and FIG. 3 is a plan view of the suction tool main body 1 with the top cover removed. An elongated suction chamber 2 is formed in the suction device main body 1 along the longitudinal direction, a box-shaped connection case 3 is connected in communication with the center of the suction chamber 2, and a connection vibe 4 is connected to the rear of the connection case 3. Ru.

This connecting vibrator 4 is connected to the suction side of a vacuum cleaner main body (not shown) via a connecting hose, and on the other hand, wheels 5 for traveling on the floor are rotatably supported at the rear of the suction tool main body 1.

An opening 6 as shown in FIG. 2 is formed at the bottom of the suction chamber 2 as a suction hole, and a rotating brush body 7 is disposed along the longitudinal direction with both ends supported by bearings 8. will be established. This rotating brush body 7 has a single blade made of an elastic polymer material (having tooth-shaped corrugations on both longitudinal edges) which is mounted around a central axis so as to be twisted approximately 180 degrees in the axial direction. Composed of clothes.

The motor 9 is installed in the suction tool main body 1 to drive the rotating brush body 7, and the rotation shaft of the motor 9 and the pulley fixed to the end of the rotating brush body 7 are connected to the timing belt 1.
Connected by 0. A dry battery 11 is used as a power source for the motor 9, and the dry battery 11 is placed in the suction tool main body 1 on the opposite side of the motor 9 with the connection case 3 in between.

Furthermore, a movable contact member 14 is pivotally supported within the suction tool main body 1 so as to be tiltable up and down about a shaft 14a provided at the end. A contact piece 14b is provided at the middle lower part of the movable contact member 14.
is provided to protrude downward, and the contact piece 14b enters the small opening 15 provided at the bottom of the suction device main body 1, and in a state where it does not receive any pushing up force from below, the contact piece 14b moves as shown in FIG. It is located at approximately the same horizontal position as the bottom surface of the suction tool main body 1. An arcuate rack portion 14c is provided at the tip of the movable contact member 14, and a variable resistor 12 is provided near the rack portion 14c.
is disposed, and a pinion 13, which is a rotating shaft of the variable resistor 12, is engaged with the rack portion 14c. Furthermore, a weak torsion coil spring 16 is attached to the shaft 14a of the movable contact member 14, which urges the movable contact member 14 to the position shown in FIG. 4, that is, downwardly. Therefore, when the movable contact member 14 receives an upward force against the spring biasing force and tilts upward about the shaft 14a, the rotation axis of the pinion 13, that is, the variable resistor 13 is moved to the fourth position via the rack portion 14c. When the movable contact member 14 rotates counterclockwise in the figure and conversely rotates downward due to the biasing force of the spring, the rotation shaft of the variable resistor 13 rotates clockwise in the figure. This movable contact member 14 and the variable resistor 13 linked thereto are structured so that they can be moved upward, that is, counterclockwise, with a fairly small force.For example, as shown in FIG. When the contact piece 14b comes into contact with the carpet and receives a force that lifts the contact piece 14b upward by the hair of the carpet, the movable contact member 14 moves upward and the rotation axis of the variable resistor 13 rotates counterclockwise. rotate in the direction.

The variable resistor 13 is used as a speed control means for the motor 9, and is connected in series between the motor 9 and the dry battery 11, as shown in FIG. Further, in this variable resistor 13, the movable contact member 14 moves upward as shown in FIG.
When the pinion 3 rotates counterclockwise, the resistance value decreases, and when the movable contact member 14 moves downward and the pinion 13 rotates clockwise, the resistance value increases.

The floor suction tool configured in this manner is connected to the suction side of a vacuum cleaner body (not shown) via a connecting vibrator and a connecting hose, and is used for cleaning floor surfaces such as carpets or tatami mats.

First, in order to clean the carpet floor surface, the suction tool main body 1 is placed on the carpet and when the vacuum cleaner main body starts suctioning, the suction tool main body 1 sucks dust through the opening 6 at the bottom. At this time, as shown in FIG. 6, the contact piece 14b of the movable contact member 14, which enters the small opening 15 at the bottom, comes into contact with the carpet and is lifted, thereby rotating upward about the shaft 14a. Therefore, the pinion 13 rotates counterclockwise in FIG. 6 via the rack portion 14'c, and the rotation axis of the variable resistor 12 rotates in the same direction, so that the resistance value of the variable resistor 12 Decrease. Therefore, the current supplied to the motor 9 increases, and the motor 9 increases its rotational speed and drives the rotating brush body 7 to rotate at high speed, scraping out dust from inside the carpet, and the scraped out dust is well sucked and removed from the carpet. cleaning is done effectively. In this way, the movable contact member 1
4 is lifted by the hair of the carpet, the longer the hair is, the more it tilts, the variable resistor 12 moves to reduce its resistance value, and the rotating brush body 7 rotates at a higher speed.

On the other hand, when cleaning a tatami floor, place the suction tool main body 1 on the tatami and start suction with the vacuum cleaner main body, and the suction tool main body 1 will suck the dust on the tatami through the opening 6 at the bottom. do. At this time, as shown in FIG. 5, the movable contact member 14 maintains a substantially horizontal state without being lifted up because the contact piece 14b enters the small opening 15 at the bottom and hardly contacts the tatami floor surface. do. Therefore, the variable resistor 12 maintains a relatively high resistance value, the current supplied to the motor 9 is small, the motor 9 is controlled at a low speed, and the rotating brush body 7 is cleaned while rotating at a low speed.

Therefore, there is little noise caused by the contact between the rotating brush body 7 and the tatami mat, and cleaning can be performed without damaging the brush or the tatami mat.

Furthermore, when cleaning a carpet, if the suction tool main body 1 is lifted from the carpet in order to change the area to be cleaned, the movable contact member 14 will be lowered as the lifting by the carpet hair is released. It returns to a substantially horizontal position as shown in FIG.

Therefore, the variable resistor 12 rotates clockwise in FIG. 4 to increase its resistance value, the motor 9 is controlled to decelerate, the rotating brush body 7 rotates at a low speed, and the rotating brush body 7 rotates at a high speed with a light load. This prevents the noise caused by the noise.

<Effects of the Invention> As explained above, according to the floor suction tool of the present invention,
A speed control means for controlling the speed of a motor for driving a rotating brush body is provided in the suction tool main body, a movable contact member for moving the speed control means is provided movably, and the suction tool main body is placed, for example, on a carpet. At this time, the contact piece of the movable contact member comes into contact with the hair of the carpet and moves the movable contact member, which acts on the speed control means to increase the speed of the motor. Therefore, when cleaning a hairy floor surface such as a carpet, when the suction tool body is placed on the carpet, the speed control means is moved via the movable contact member, the speed of the motor is controlled to increase, and the rotating brush body is It rotates at high speed, and the dust inside the carpet is effectively sniffed out, making it possible to effectively clean even carpets with long hair. In addition, when cleaning floors such as tatami mats, the movable contact member is not moved and the speed control means controls the motor at a low speed, so the rotating brush body rotates at a low speed, preventing noise generation and damage to the brushes. It can be prevented.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view of the floor suction device, Fig. 2 is a bottom view of the same, Fig. 3 is a plan view with the top cover removed, and Fig. 4 is a plan view of the suction device for the floor. FIG. 5 and FIG. 6 are the same sectional views in a used state, and FIG. 7 is a connection diagram of the motor and the like. DESCRIPTION OF SYMBOLS 1... Suction tool main body, 7... Rotating brush body, 9... Motor, 12... Variable resistor (speed control means), 14... Movable contact member, 14b... Contact piece. Figure 1 2r: IJ No. 71

Claims (1)

[Scope of Claims] 1. In a floor suction tool equipped with a rotating brush body that is rotationally driven by a motor and that scrubs the floor surface by its rotation, the suction tool comes into contact with the floor surface through the bottom surface of the suction tool body. a first position in which the contact piece is retracted upward from the bottom surface when the contact piece contacts the floor surface; and a first position in which the contact piece is retracted upward from the bottom surface when the contact piece contacts the floor surface; a movable contact member that is movable between the movable contact member and a second position that is substantially the same horizontal position; and a rotational speed of the motor is gradually increased in relation to the movement of the movable contact member from the second position to the first position. A floor suction tool for a vacuum cleaner, characterized in that it is equipped with a speed control means for controlling the speed of the vacuum cleaner. 2. The speed control means is connected to the second
The motor is configured by a variable resistor whose resistance value gradually decreases in relation to movement from one position to the first position, and the current to the motor is increased by decreasing the resistance value of the variable resistor. A floor suction tool for a vacuum cleaner according to claim 1.