JPS6320132B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a suction port body for a vacuum cleaner, which is used by being connected to a vacuum cleaner via a connecting pipe.

BACKGROUND ART Conventionally, a main body case connected to a dust collection section of a vacuum cleaner has a brush chamber that houses brushes and a turbine chamber that houses a turbine that drives the brushes, and the brush chamber and turbine chamber are connected to each other. A nozzle for blowing suction airflow to the turbine and a ventilation hole for passing the suction airflow bypassing the turbine are formed in between, and a shutter for selectively opening and closing these nozzles and the ventilation hole is provided, and the shutter is operated. Open the nozzle and rotate the turbine and brush to clean carpets, etc., or close the nozzle with a shutter, stop the turbine and brush, and let the suction air flow through the ventilation hole to clean other floor surfaces. There are things that did.

Problems to be Solved by the Invention In the conventional structure, the turbine and brush are always connected, so there is no problem when using the turbine with suction air blowing to drive the brush. Without a brush drive, the flow of the suction airflow must bypass the turbine and a detour must be formed around the turbine chamber. Therefore, the shape of the suction port body becomes large.

It is also possible to apply brakes to the turbine to stop it if necessary and allow the suction airflow to flow through the turbine chamber, but the suction airflow hits the turbine and causes turbulence, which increases noise. However, there is a problem in that dirt tends to get caught in the turbine.

Means to solve the problem A brush chamber with an opening at the bottom in which a horizontally long brush is rotatably housed in a main body case that runs on the floor, and a partition wall formed approximately in the center of the brush chamber with a ventilation hole are formed to form sections. a connecting portion connecting the turbine chamber to a dust collecting section maintained in a negative pressure state, and a sliding plate for varying the degree of opening of the ventilation hole being slidably attached to the partition wall; A guide body having different distances from the brush at vertical positions is provided in the turbine chamber, and a bearing member biased by a spring in a direction that shortens the distance from the brush is attached to the guide body so as to be slidable in the vertical direction. A receiving portion formed by an inclined rib is formed on this bearing member, and a turbine having an axis parallel to the axis of the brush is attached to the bearing member, and when the sliding plate moves in a direction to narrow the ventilation hole, the receiving portion is attached to the sliding plate. forming a holding part that presses the bearing member to move the bearing member along the guide against the biasing force of the spring, and connects the turbine and the brush with a maximum distance therebetween; A belt was set up to hang it.

Function: When the ventilation holes in the turbine chamber are narrowed and jet airflow for driving is blown onto the turbine, the belt between the turbine and the brushes is tensioned to connect them, thereby driving the brushes. When the slide plate moves to open the ventilation hole, the turbine moves and approaches the brush, which causes
Even if the belt is loosened and the turbine rotates, the brushes will not rotate, and the idle rotation of the turbine will not create resistance to the intake airflow, causing less turbulence and no noise, and dirt will not get caught in the turbine. It's nothing like that.

Embodiment An embodiment of the present invention will be described based on the drawings.
A suction hose 3 and an extension pipe 4 are sequentially connected to a dust collection chamber 2 of a vacuum cleaner 1. Next, a suction port body is connected via a connecting pipe 8, and this suction port body has a main body case 5.
The connecting tube 8 is rotatably held between the upper case 6 and the lower case 7, and the two are connected, and the bumper 9 is also held between the upper case 6 and the lower case 7. and,
The upper case 6 and the lower case 7 are formed with a partition wall 10 whose edges are connected to each other, thereby creating a brush chamber 12 in which a horizontally long brush 11 is rotatably housed.
and a turbine chamber 14 that houses the turbine 13.
A transmission chamber 15 is formed. The brush chamber 1
A suction opening 16 is formed in the bottom surface of 2, a ventilation hole 17 is formed in the partition wall 10 to communicate the brush chamber 12 and the turbine chamber, and a slide plate 18 is provided to change the degree of opening of the ventilation hole 17. It is provided slidably along the partition wall 10. This slide plate 18 is provided with a knob 19 that protrudes from the upper case 6.

Next, a rectangular cylindrical bearing member 28 for bearing the shaft 21 of the turbine 13 is provided. As this bearing member 28 goes upward, the brush 1
It is supported so that the distance between its axes from 1 to 1 changes.
That is, grooves 29 are formed on both ends of the bearing member 28, and the grooves 29 are inclined upwardly toward the brush 11 side. And these grooves 2
A guide piece 30 serving as a guide body inserted into the housing 9 is formed on the bottom of the lower case 7 and the upper surface of the upper case 6 so as to be inclined forward as it goes upward. That is, these guide pieces 30 are provided so as to be inclined so that the distances from the brush 11 are different in the upper and lower positions. Further, a spring 31 is provided at the bottom of the lower case 7 to bias the bearing member 28 upward. The shaft 21 of the turbine 13 passes through the bearing member 28 in parallel with the axis of the brush 11 and projects into the transmission chamber 15.
An elongated hole 32 is formed at the front upper part of the shaft so that the shaft 21 is inserted therethrough. Further, the bearing member 28 is formed with a receiving part 33 made of ribs that slopes upward as it approaches the turbine 13, and a presser part 34 that presses down this receiving part 33 is attached to a slide plate 18 that changes the degree of opening of the ventilation hole 17. is integrally formed. In the transmission chamber 15, a belt 25 is suspended between the brush 11 and the shaft 21 of the turbine 13, which connects the brush 11 and the shaft 21 of the turbine 13 when the distance between the two is maximum.

In such a configuration, as shown in FIG. 2, the state in which the slide plate 18 is slid toward the center to close the ventilation hole 17 is the state in which a carpet, etc. Since the part is pressed by the holding part 34 of the slide plate 18, it is guided by the guide piece 30 and slides downward and rearward. That is, the direction of movement of the slide plate 18 in the direction of narrowing the ventilation hole 17 is set so as to coincide with the direction of movement of the bearing member 28 in the direction of moving away from the brush 11. Therefore, the shaft 2 of the turbine 13
The distance between the axes of the brush 1 and the brush 11 becomes maximum, and tension is applied to the belt 25. Therefore, the turbine 13 rotates at high speed due to the restricted intake airflow,
The rotation is transmitted to the brush 11. Slide plate 1
8 to the side, the opening amount of the ventilation hole 17 increases. At the same time, the holding part of the bearing member 28 is
3, it slides upward and forward together with the turbine 13 and shaft 21. That is, the distance between the shafts of the turbine 13 and the brush 11 becomes the shortest, and the belt 25 becomes slack. In this way,
The turbine 13 is in a free state, there is no resistance to its rotation, and since the ventilation holes 17 are widened, the flow becomes slow and passes through the turbine chamber 14 while rotating the turbine 13 slowly.

In addition, in order to change the distance between the shafts of the turbine 13 and the brush 11, the turbine 13 may be slid in the front-back direction, or may be slid in the up-down direction.

Also, by operating the slide plate 18, set the amount of restriction of the ventilation hole 17 to a medium level, and loosen the belt 25 a little.
It is also possible to reduce the rotation of the turbine 13 and transmit the rotation to the brush 11 in a half-clutch state, resulting in the brush 11 intentionally rotating at a constant speed.

Effects of the Invention As described above, the present invention comprises a main body case that runs on the floor, a brush chamber with an opening at the bottom in which a horizontally long brush is rotatably housed, and a partition wall having a ventilation hole approximately in the center of the brush chamber. and a connecting portion connecting the turbine chamber to a dust collecting section maintained in a negative pressure state, and a slide plate that changes the degree of opening of the ventilation hole is slidable on the partition wall. A guide body is installed in the turbine chamber and has a different distance from the brush at the upper and lower positions, and a bearing member biased by a spring is slid in the vertical direction on the guide body in a direction that shortens the distance from the brush. a turbine having an axial center parallel to the axial center of the brush is mounted on the bearing member, and a turbine is mounted on the sliding plate in a direction in which the sliding plate narrows the ventilation hole; A presser portion is formed to press the receiving portion and move the bearing member along the guide against the biasing force of the spring, and the turbine and the brush are placed at a maximum distance from each other. Since a belt connecting the two is installed, the ventilation holes in the turbine chamber are narrowed and the turbine rotates at high speed.This allows the brushes to be driven and the turbine to rotate as the slide plate that opens the ventilation holes moves. By bringing the belt close to the brush and loosening the belt between the two, it is easy to free the turbine and allow the suction airflow to pass through without resistance.Moreover, when the turbine is not driven, This has advantages such as no turbulence caused by the turbine, reduced noise, and no dust or the like caught in the turbine.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view of the entire reduced scale, FIG. 2 is a plan view of the main body case with the upper case omitted, and FIG.
-A longitudinal side view of the main body case taken in section along line C; Fig. 4 is an exploded perspective view showing the support structure of the turbine; Fig. 5 is a longitudinal side view of the bearing member; and Fig. 6 is the support structure of the bearing member. FIG. 2...Dust collection part, 5...Main case, 8...Connection pipe (connection part), 10...Partition wall, 11...Brush,
12... Brush room, 13... Turbine, 14...
Turbine chamber, 17... Ventilation hole, 18... Slide plate, 21... Shaft, 25... Belt, 28... Bearing member, 30... Guide piece (guide body), 33...
Receiving part, 34...presser part.

Claims (1)

[Claims] 1 A brush chamber with an opening at the bottom in which a horizontally long brush is rotatably housed in a main body case that runs on the floor, a turbine chamber partitioned approximately in the center of this brush chamber through a partition wall with a ventilation hole, and a negative pressure A connecting portion for connecting the turbine chamber to the dust collecting portion to be maintained in the same state is provided, and a sliding plate for varying the degree of opening of the ventilation hole is slidably attached to the partition wall, and a sliding plate is slidably attached to the partition wall so as to be connected to the turbine chamber at a vertical position. A guide body having different distances from the brush is provided, and a bearing member biased by a spring in a direction that shortens the distance from the brush is attached to the guide body so as to be slidable in the vertical direction. A turbine is attached to the sliding plate, which forms a receiving part with a rib and has an axis parallel to the axis of the brush, and when the sliding plate moves in a direction to narrow the ventilation hole, it presses the receiving part and releases the spring. A holding part is formed to move the bearing member along the guide against the urging force of the turbine, and a belt is provided to span the turbine and the brush and connect them with a maximum distance between them. A vacuum cleaner suction port body characterized by: