JPS63102741A - Floor nozzle of electric cleaner - Google Patents

Abstract

(57) [Abstract] 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 floor nozzle for a vacuum cleaner equipped with an electric rotating brush that is effective for cleaning carpets and the like.

BACKGROUND OF THE INVENTION Conventionally, the floor nozzle of this type of vacuum cleaner was generally driven by transmitting the rotational force of a motor to a rotating brush via a belt. Similar configurations have also been considered. The conventional configuration will be explained below with reference to FIG.

Reference numeral 22 denotes a main body provided with a suction port (not shown) at the bottom, and is connected to the vacuum cleaner main body through a connecting pipe 23. 24 is an outer rotor type electric motor built into the main body 22, and brush bristles 2 are attached to a cylindrical body 26 on the outer periphery of the rotor 25 of this electric a24.
7 has hair transplanted. Further, the armature 28 is attached to a fixed shaft 29.

In the conventional product such as L, the cylindrical body 2B rotates when the rotor 25 rotates. Furthermore, since the TL machine 28 is attached to a fixed shaft, the rotor 25 rotates within the main body 22 and provides the driving force for scraping out the dirt on the carpet.

FIG. 4 shows a combination of the connecting pipe 23 of FIG. 3 and a joint 31 having an arcuate cross-sectional side surface 30, in which the main body 22 does not slide on the arcuate side surface and rotates around the center of rotation a. It is designed to be able to rotate left and right.

Problems to be Solved by the Invention In such a conventional floor nozzle for a vacuum cleaner, in order to improve operability by freeing rotation between the floor nozzle main body 22 and the connecting pipe 23, as shown in FIG. In addition, a joint 31 was further provided to enable free rotation in the vertical direction.

However, since this vertical rotation is performed around a rotation center a provided at the rear of the center of the rotating brush, it is necessary to arrange a longer joint at the rear of the main body 22.
When lifted while being cleaned.

The heavy load on the front part of the vacuum cleaner creates a moment that acts forward and downward, which puts extra force on the hands, making it inconvenient to use and making it easy to get tired while using the vacuum cleaner.

Means for Solving the Problems In order to solve the above problems, the present invention provides: a rotating brush driven by a power source, a nozzle body that accommodates the rotating brush in correspondence with the suction port, and a vacuum cleaner main body side. a connecting body that connects with the connecting tool, and the connecting body is provided with a rotation center that rotates along the rotating brush, and the rotation center is on a vertical plane passing through the rotation center axis of the rotating brush. According to the present invention, the rotation center of the connecting body is provided on the vertical plane passing through the rotation axis of the two-rotation brush with the above-described configuration, so that the rotary brush is small and has good operability. A floor nozzle can be configured.

Embodiment 1 Below, the structure of the present invention will be explained with reference to FIGS. 1 and 2 showing an embodiment of the present invention.

4 is a nozzle body consisting of an upper nozzle member 2 and a lower nozzle member 3, and 4 is a suction opening [1
, 5 is a joint vibrator whose one end is connected to a dust suction pipe of a vacuum cleaner, 6 is a hollow connector, into which the other end of the joint pipe 5 is fitted from the - side opening end, and the periphery of the other opening end is connected through a bellows 7. By attaching it to the nozzle body, it is air tight with the outside. Reference numeral 8 denotes an L-shaped frame integrally formed on both sides of the hollow connecting body 6. The ends of the frame 8 are rotatably supported on both sides of the nozzle body, so that the hollow connecting body 6 can be attached to the bellows 7. It can be rotated freely within the expansion and contraction range. Reference numeral 9 denotes a rotating brush, which is provided inside the main body l in correspondence with the suction port 4. The rotation center B of the connecting body 6 is located on a vertical plane passing through the rotation axis A of the rotating brush 9 (see FIG. 2). Reference numeral 10 denotes brush bristles planted in a spiral around the outer periphery of the rotating brush 9. , 11 is a small motor, which is provided at one end of the rotary brush 9 in the direction of its rotation axis. Reference numeral 12 denotes a holding shaft built into the rotating brush 9, one end of which is supported by the main body 1 and covers and holds the outer periphery of the small motor 11. Reference numeral 13 denotes a planetary gear reduction device built into the rotating brush 9, and 14 an internal gear of the planetary gear reduction device 13, which is attached to the drive shaft 15 of the small motor 11. 1B is planetary gear 1
It is held on the inner surface of the rotating brush 9 by the arms 7. 1
8 is an external gear, which is held on the inner surface of the holding shaft 12. 1
13 is a bearing disposed between the end of the rotating brush 9 and the holding shaft 12, and 20 is a bearing that supports the end of the rotating brush 7 where the motor is not provided on the main body l.

The connecting body 6 is connected to the rotation axis A of the brush 7 for one rotation with respect to the floor.
The center of rotation B is located on the same vertical line as the i! ! It is tied.

2! is a communication hole at the rear of the main body 1 that communicates with the connecting body 6.

In the above configuration, to explain the operation, the airflow flowing in from the suction port 4 is transferred to the connecting body 6. It passes through the joint vibe 5 and is sucked into the vacuum cleaner. At this time, the dust scraped from the carpet by the rotating brush 7 is also sucked into the vacuum cleaner along with the airflow.

When the small motor 11 is driven, the internal gear 14 of the planetary gear reduction device 13 rotates, and since the external gear 18 is held by the holding shaft 12 held in the main body 1, the arm body 1B of the planetary gear 17 rotates. Then, the rotating brush 9 held by the arm lB rotates with respect to the main body l. At this time, the nozzle body 1 corresponds to the unevenness of the carpet or floor surface within the expansion and contraction range of 1 and 7, and can smoothly suck in the dust.

In this way, according to the embodiment described above, the rotational force is applied to the rotating brush 9 from the small motor 11 built in the holding shaft 12 via the planetary gear reduction device 13, so that the rotating brush 9 actually rotates. The ff1M of the part is small, reducing the load on the bearing and extending the life of the an. Also,
Since the weight of the rotating part is small, the load torque required to rotate the brush 9 for one rotation can be reduced, and even if the motor torque is small, it can be rotated, so a small motor can be used.
The rotating brush 9 can be made smaller, and the main body 1 can be made smaller.

In addition, since the rotation centers of the rotating brush 9 and the connecting body 6 are set on the same vertical plane, the connecting tool on the vacuum cleaner side can be lifted off.
Even when the floor nozzle body is lifted into the air, there is no imbalance in weight, so there is no moment where the vacuum cleaner user gets tired, and it can be used flexibly even on rough, long-pile carpets or uneven surfaces. Can perform detailed cleaning.

In this embodiment, a floor nozzle in which a motor is built into the rotating brush is shown, but a similar structure may be used in which an air turbine is provided in the connecting body and the rotating brush is driven by a belt.

Effects of the Invention In the present invention, the center of rotation of the rotating brush and the center of rotation of the connecting body are arranged in the same vertical plane, as shown in 11U, so that it is difficult to rotate the rotating brush in the vertical direction as in the conventional case. Since no joint is required, the structure of this part can be simplified, and by making the two-rotation brush smaller, the main body can be made thinner and smaller. In addition, since the weight is well balanced, there is no moment caused by the floor nozzle itself when lifting it for cleaning, making it less likely to get your hands tired.Furthermore, it can flexibly respond to unevenness even on long pile carpets. , it has the effect of being able to perform detailed cleaning.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of a floor nozzle for a vacuum cleaner according to the present invention, FIG. 2 is a vertical cross-sectional view of the same, FIG. 3 is a cross-sectional view showing a conventional example, and FIG. FIG. 7 is a vertical cross-sectional view showing another conventional example. l...Main body 6...Connection body 9...Rotating brush A...Rotation center of the rotating brush B...Rotation center of the connection body

Claims (1)

[Claims] (1) A rotating brush driven by a power source, a nozzle body that corresponds to the suction port and incorporates the rotating brush, and a connecting body that connects to a connecting tool on the vacuum cleaner main body side, and A floor nozzle for a vacuum cleaner, characterized in that the center of rotation is provided to rotate along a rotating brush, and the center of rotation is provided on a vertical plane passing through the central axis of rotation of the rotating brush.