JPH0137940B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a suction port body for a vacuum cleaner equipped with a rotating brush.

BACKGROUND ART In general, this type of vacuum cleaner suction port body is designed to be able to effectively clean various floor surfaces such as hard floors made of board materials, tatami mats, carpets, etc. ing. The rotation speed of the rotating brush and the contact pressure with the floor surface are changed depending on the properties of the floor surface.

Problems to be Solved by the Invention When a rotating brush is in contact with a hard floor surface, it is unlikely that dust will become entangled with the brush bristles, but when cleaning a carpet, lint etc. may become entangled with the brush bristles. many. Therefore, when cleaning a carpet, it is necessary to remove tangled lint and other debris from the rotating brush, which is both unclean and troublesome.

Means for Solving the Problem A brush chamber in which a rotating brush facing the suction port is rotatably and vertically movably housed, and a turbine chamber in which a turbine for rotating the rotary brush is rotatably housed are separated by a partition wall. A main body formed by partitioning is provided, a normally open vent facing the turbine is provided in the partition wall, a leak hole communicating with the turbine chamber is formed in the lower surface of the main body, and a leak hole communicating with the turbine chamber is formed in the lower surface of the main body. A supporting body made of an elastic member is provided that continuously surrounds the periphery of the suction port and has a tip extending downward from the bristles of the rotating brush, and this supporting body is joined to the floor surface so that the rotating brush is connected to the floor surface. A dust removing body is provided at the upper part of the brush chamber to be elastically deformed to a position in contact with the rotating brush and to be joined to the brush bristles when the rotating brush moves upward.

Function When cleaning a hard floor surface, the contact friction between the support body and the floor surface is usually small, so the amount of deflection of the support body is small, but when cleaning a carpet, the frictional resistance of this carpet is large. , the support body deforms greatly, and as a result, the bristles of the rotating brush join with the carpet, causing the rotating brush to move upward relative to the main body. Therefore, even if the brush bristles hit the dust remover provided at the top of the brush chamber and become entangled with dust, it is automatically removed.

Embodiment An embodiment of the present invention will be described based on the drawings.
A main body 2 is provided with a rotary tube 1 attached to the rear thereof, which is connected to a dust collecting section (not shown) of a vacuum cleaner. This main body 2 is divided into a turbine chamber 4 in which a turbine 3 is rotatably housed and a brush chamber 6 in which a rotary brush 5 is rotatably and vertically movable in a partition wall 7.
It is partitioned and formed by This partition wall 7
A vent hole 8 is provided at a position facing the turbine 3 . A timing belt 9 is suspended between the turbine 3 and the rotating brush 5. Furthermore, a leak hole 10 that guides outside air to the turbine chamber 4 so as to detour it below the turbine 3, and a suction port 11 that opens on the lower surface of the brush chamber 6 are formed in the lower part of the main body 2.

Therefore, a frame 1 is provided at the lower part of the main body 2 so as to surround the leak hole 10 and the suction port 11.
2 is installed. Brush bristles 13, which serve as elastic supports, are implanted around the entire circumference of the frame 12. The length of the brush bristles 13 is determined to extend downward from the brush chamber 14 in which the bristles are implanted in the rotating brush 5.

A dust removal body 19 is provided in the upper part of the brush chamber 6, with which the bristles 14 of the rotating brush 5 come into contact when the rotating brush 5 moves upward.

In such a configuration, when cleaning the tatami or wooden floor 15, when the electric blower (not shown) of the vacuum cleaner is driven and the main body 2 is run, the tatami or wooden floor 15 is slippery. Brush bristles 13 are wooden floor 1
Even if the rotary brush 5 moves smoothly without getting caught and deforms, the amount of deformation is small, so the brush bristles 14 of the rotating brush 5 do not join with the wooden floor 15, and the bristles 14 of the rotating brush 5 do not connect with the wooden floor 15. A large gap is maintained between the two. As a result, the suction air flows into the turbine chamber 4 from the leak hole 10 on the one hand, bypasses the turbine 3, and flows into the dust collecting section of the vacuum cleaner. On the other hand, it flows from the suction port 11 into the ventilation port 8 and the turbine chamber 4, hits the turbine 3, and then flows into the dust collecting section. Therefore, the amount of blown air hitting the turbine 3 is relatively reduced, so that the rotational speed of the turbine 3 is reduced, and the rotational speed of the rotating brush 5 connected via the timing belt 9 is also reduced. In addition, by changing the length of the brush bristles 13 for each bundle, dust can also be absorbed from the outside of the brush bristles 13 when cleaning a wooden floor 15 or the like where the brush bristles 13 are difficult to fall down. I can do it.

When cleaning the carpet 16, when the main body 2 is run, the brush bristles 13 get caught on the carpet 16 and are deformed, as the carpet has a large frictional resistance. As they are joined together, the gap between the leak hole 10 and the carpet 16 becomes smaller. As a result, the amount of air sucked in from the leak hole 10 with a small opening area is reduced.
The amount of air sucked in from the suction port 11 having a large opening area increases. Therefore, the suction air hitting the turbine 3 increases, and the rotational speeds of the turbine 3 and the rotating brush 5 increase, so that the carpet 16 can be cleaned well.

Further, as the rotating brush 5 moves upward due to the resistance of the carpet 16, the brush bristles 14 and the dust removing body 19 are joined together, and thread waste etc. entangled in the brush bristles 14 can be removed from the carpet 16.

Effects of the Invention As described above, the present invention partitions a brush chamber in which a rotating brush facing the suction port is rotatably and vertically movably housed, and a turbine chamber in which a turbine for rotating the rotary brush is rotatably housed. A main body partitioned by a wall is provided, a normally open vent facing the turbine is provided in the partition wall, a leak hole communicating with the turbine chamber is formed in the lower surface of the main body, and the main body A support body made of an elastic member that continuously surrounds the periphery of the suction port and whose tip extends downward from the bristles of the rotating brush is provided at the lower part of the rotating brush, and this support body is connected to the floor surface and supports the rotating brush. The brush elastically deforms to a position where it touches the floor surface, and a dust removal body is provided in the upper part of the brush chamber that joins the brush bristles when the rotating brush moves upward, so that hard floor surfaces can be cleaned. Sometimes, the amount of deflection of the support is small because the contact friction between the support and the floor is small, but when cleaning a carpet, the frictional resistance of this carpet is large, so the support deforms greatly. As a result, the bristles of the rotating brush come into contact with the carpet, and the rotating brush moves upward relative to the main body. Therefore, even if the brush bristles come into contact with the dust removing body provided in the upper part of the brush chamber and become entangled with dust, it can be automatically removed.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a horizontal sectional view, FIG. 2 is a sectional view taken along line A-C in FIG. 1, and FIG. 3 is a sectional view taken along line B-C in FIG. 1. FIG. 2...Main body, 3...Turbine, 4...Turbine chamber, 5...Rotating brush, 6...Brush chamber, 7...
Partition wall, 8...Vent hole, 10...Leak hole, 11
...Suction port, 13... Support body, 14... Brush bristles, 19... Dust removing body.

Claims (1)

[Claims] 1. A main body is provided in which a partition wall partitions a brush chamber in which a rotating brush facing the suction port is rotatably and vertically movable and a turbine chamber in which a turbine for rotating the rotary brush is rotatably housed; A normally open vent facing the turbine is provided in the partition wall, a leak hole communicating with the turbine chamber is formed in the lower surface of the main body, and a periphery of the suction port is continuously connected to the lower part of the main body. A supporting body of an elastic member is provided which surrounds the rotary brush and extends downward from the bristles of the rotating brush, and this supporting body is joined to the floor surface and elastically deforms to a position where the rotating brush contacts the floor surface. A suction mouth body for a vacuum cleaner, characterized in that a dust removing body is provided in an upper part of the brush chamber to join the bristles when the rotating brush moves upward.