JPH0443660B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor nozzle for a vacuum cleaner equipped with a rotating brush that is effective for cleaning carpets and the like.

Conventional technology Conventionally, the floor nozzle of this type of vacuum cleaner was
The configuration shown in Japanese Patent No. 46-23195 was common. The configuration will be described below with reference to the drawings.

3 and 4, reference numeral 1 denotes a nozzle body consisting of an upper nozzle member 2 and a lower nozzle member 3. A suction chamber 4 is formed in the front part of the main body, and a turbine chamber 5 is formed in the rear part. Reference numeral 6 denotes a rotating brush rotatably disposed within the suction chamber 4, and brush bristles 7 are planted on the outer periphery. 8 is an air turbine rotatably arranged in parallel with the rotating brush 6 within the turbine chamber 5; 9 is a communication hole connecting the suction chamber 4 and the turbine chamber 5; 10 is a belt serving as a power transmission means, which connects the rotating brush to the rotary brush. A large pulley 11 provided at the end of the rotating shaft of the air turbine 6 and a small pulley 1 provided at the end of the rotating shaft of the air turbine.
It is strung between 2.

Problems to be Solved by the Invention With such conventional vacuum cleaner floor nozzles,
Since the air turbine 8 was arranged parallel to the rotating brush 6, it was not possible to reduce the dimension l of the end of the nozzle body. That is, in order to reduce the dimension l, the distance p between the shafts of the rotating brush 6 and the air turbine 8 must be reduced.
In this case, the outer dimensions of the rotary brush 6 and the air turbine 8 must be made smaller, so the rotary torque of the air turbine 8 cannot be produced, or the length of the rotary brush 6 due to the inability to increase the length of the brush bristles 7 is increased. A lower limit was set on the dimension l because problems such as scraping up on the surface of the carpet and a reduction in dust absorption performance occurred.

The present invention solves these problems,
The purpose is to provide a small vacuum cleaner floor nozzle.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a rotating brush installed in the width direction of the suction chamber, and a rotating brush installed in the turbine chamber formed at the rear of the suction chamber. a rotating brush having a rotating shaft in a direction, a communication hole communicating the suction chamber and the turbine chamber, and power transmission means for transmitting power from an air turbine to the rotating brush, wherein the rotating shaft of the air turbine is connected to the rotating brush. The outer space is narrower than the inner space with respect to the axis of rotation.

Effects According to the present invention, the end of the rotary shaft of the air turbine is brought close to the end of the rotary shaft of the rotary brush with the above-described configuration, so that the end of the floor nozzle can be removed without reducing the external dimensions of the air turbine and the rotary brush. The size of the part can be reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 21 denotes a nozzle body consisting of an upper nozzle member 22 and a lower nozzle member 23, which has a suction chamber 24 formed at the front part and a turbine chamber 25 at the rear part. Also, 26
27 is a connecting hole that communicates between the suction chamber 24 and the turbine chamber 25, and 27 is a rotatably provided joint at the rear of the turbine chamber 25, and a joint pipe 28 that connects to a dust suction pipe of a vacuum cleaner is attached. Reference numeral 29 denotes a rotary brush rotatably provided within the suction chamber 24, and brush bristles 30 are spirally planted around the outer periphery of the rotating brush. 3
Reference numeral 1 denotes an air turbine disposed to be biased towards the wall 25a side in the turbine chamber 25, and its rotating shaft 32 protruding laterally is not parallel to the rotating shaft 33 of the rotating brush 29, that is, the rotation of the air turbine 31 is axis 32
are arranged so as to be inclined with respect to the rotating shaft 33 of the rotating brush 29 in such a direction that the distance on the outside is narrower than the distance on the inside. 34 is a belt that is a power transmission means stretched between the rotating shaft 32 of the air turbine 31 and the rotating shaft 33 of the rotating brush 29; 35 is the belt 3;
This is a straightening roller disposed between the two rotating shafts 32 and 33 in contact with the rotating shafts 32 and 33, and adjusts the angle of the belt so that the belt hangs approximately at right angles to these rotating shafts 32 and 34. 36 and 37 are rotating shafts 3
This is a pulley that is integrally formed with the belt tensioning portions 2 and 34.

In the above configuration, to explain the operation, the suction chamber 2
The air sucked through the suction port (not shown) of No. 4 enters the turbine chamber 25 from the suction chamber 24 through the communication hole 26, but since the opening of the communication hole 26 is relatively small, it becomes a high-speed airflow. air turbine 3
collides with 1. At this time, since the air turbine 31 is arranged at an angle with respect to the communication hole 26, the suction airflow impinges on the surface of the air turbine 31 not perpendicularly but obliquely at a certain angle. In this way, the air turbine 31 rotates, and its power is transmitted to the rotating brush 29 via the rotating shaft 36, the belt 34, and the rotating shaft 33.

As described above, according to the floor nozzle of the vacuum cleaner according to the embodiment of the present invention, the rotating shaft 32 of the air turbine 31
The width L of the end portion of the nozzle body 21 can be made smaller because the nozzle body 21 is arranged at an angle with respect to the rotating shaft 33 of the rotating brush 29 in such a direction that the distance on the outside is narrower than the distance on the inside.

In addition, as described above, since the suction airflow obliquely collides with the surface of the air turbine 31, the airflow smoothly rotates the air turbine 31 and the turbine chamber 2
5 and is sucked into the joint pipe 28. Therefore, the rotational load on the air turbine 31 can be reduced and efficient rotational characteristics can be obtained.

Effects of the Invention As described above, according to the present invention, the rotating shaft of the air turbine is inclined with respect to the rotating shaft of the rotating brush so that the outer interval is narrower than the inner interval. The width dimension of the end of the nozzle can be reduced, and a floor nozzle for a compact vacuum cleaner can be provided.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view showing the internal structure of a floor nozzle of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is an external perspective view of the same, and FIG. 3 is an external perspective view of a conventional vacuum cleaner floor nozzle. 4 are plan sectional views showing the internal structure of the same. 24...Suction chamber, 25...Turbine chamber, 26...
... Communication hole, 29 ... Rotating brush, 31 ... Air turbine, 34 ... Belt (power transmission means).

Claims (1)

[Claims] 1. A rotating brush installed in the width direction of the suction chamber, a rotating brush provided in a turbine chamber formed at the rear of the suction chamber and having a horizontal rotation axis, and connecting the suction chamber and the turbine chamber. and a power transmission means for transmitting power from an air turbine to the rotating brush, and the rotating shaft of the air turbine has an outer space narrower than an inner space with respect to the rotating shaft center of the rotating brush. The floor nozzle of a vacuum cleaner is arranged at an angle.