JPS644769B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a suction port body for a vacuum cleaner.

BACKGROUND ART Conventionally, there has been a suction port body that rotates a turbine using suction airflow and rotates a rotating brush using the turbine as a driving source. This type of device has a small leak hole formed on the underside of the main body of the suction port, and when the main body is attached to the floor, the leak hole is closed by the floor, and the leak that opens when the main body is lifted from the floor. There are some models that reduce the rotational noise of the turbine by restricting the wind from the main wind path that sucks outside air through the holes and blows it to the turbine, but the leak hole is completely blocked when the main body is attached to the floor. Never. This not only reduces the rotational efficiency of the turbine during cleaning, but also causes the leak hole to become clogged with dirt.

Furthermore, there are some models in which a small suction port is formed on the side of the main body to suck up fine dust from walls, etc., and this suction port is communicated from the edge suction air passage to the side of the turbine room. The suction port of the air passage has the same opening area as the leak hole described above, and therefore, if the leak hole is not completely blocked, the dust suction effect from the suction port will be reduced.

This invention was made in view of the above points, and it eliminates the leak hole that reduces the rotational efficiency of the turbine or causes clogging, and furthermore, when the main body is separated from the floor, the rotational speed and rotation of the turbine are reduced. The purpose of this invention is to provide a suction port for a vacuum cleaner that automatically reduces noise.

This invention provides a suction port body that rotates the turbine together with the rotating brush by blowing air sucked in from the lower surface of the brush chamber onto the turbine. The wall is automatically biased to divert the wind that hits the turbine to the side of the turbine using the wind guide wall, reducing the rotation speed of the turbine and rotating brushes to reduce noise. In the case where dust is sucked into the turbine chamber from the suction port formed in The wind guiding wall detours the wind to the turbine to reduce the noise of the turbine rotation, and the shielding wall formed on the connecting pipe closes the edge suction air passage and separates the wind from the edge suction air passage and the wind from the brush room. In addition, the leak hole is omitted to prevent clogging of dust, and when the main body is attached to the floor, the rotational efficiency of the turbine and the dust suction effect from the edge suction air path are promoted. It is designed so that it can be used.

An embodiment of the present invention will be described based on the drawings.
1 is the main body. This main body 1 is constructed by assembling an upper case 2 and a lower case 3 while holding a bumper 4 between them, and a connecting pipe 5 is simultaneously held during the assembly. The connecting pipe 5 does not fit two rotating pipes 6 and 7, one of which is connected to a dust collecting section of a vacuum cleaner (not shown). As shown in FIG. 3, the main body 1 is partitioned into a horizontally long brush chamber 9 for housing a rotating brush 8, a turbine chamber 10, and a transmission chamber 11. The shaft 13 of the turbine 12 housed in the turbine chamber 10 is rotatably held in a sleeve 14, and includes a gear-shaped pulley 15 fixed to one end of the shaft 13 of the turbine 12 and a gear-shaped pulley 15 fixed to one end of the rotating brush 8. pulley 16
A timing belt 17 is wound around the belt.

One side of the rotating tube 6 is connected to the shaft 1 of the turbine 12.
3, and a pin 18 erected on the other side of the rotary tube 6 is rotatably held on the side wall 19 of the turbine chamber 10.

Next, in a partition wall 20 provided between the turbine chamber 10 and the brush chamber 8, a ventilation port 22 is formed which extends from an opening 21 formed on the lower surface of the brush chamber 8 to the turbine chamber 10. This ventilation port 22 has on one side a nozzle 23 that opens opposite to the lower part of the turbine 12. Also, this ventilation port 2
A wind speed adjustment plate 24 that opens and closes the partition wall 2 in three stages
It is provided so as to be slidable along the 0. The wind speed adjusting plate 24 has an operating portion 25 on one side, and the operating portion 25 is provided with a knob 27 that projects from a window 26 formed on one side of the upper case 2. Although not shown, the operating portion 25 and the lower case 3 are resiliently engaged with each other on opposing surfaces.
Locking portions are provided at positions A, B, and C shown in FIG. 3 to moderately and stably stabilize the device. Further, an opening 28 facing the ventilation port 22 is formed in the wind speed adjusting plate 24 .

Next, an edge suction air passage 29 is formed on one side of the lower case 3 and is partitioned by partition walls 30 and 31. This edge suction air passage 29 is a small suction port 3 formed on the lower surface of one side of the lower case 3.
2 and one side of the turbine chamber 10 are communicated with each other. Further, a cover 33 covering the upper surface of this edge suction air passage 29 faces below the operating section 25, and on one side of this cover 33, the partition wall 30,
The rotating brush 8 is inclined downward from the upper surface of 31.
The suction port 32 extends downward from the bearing portion 34 of the
It has an air guide section 35 connected to. and,
A valve 36 is provided to open and close the edge suction air passage 29. The lower end of the shaft 37 of this valve 36 is held in a hole (not shown) formed in the lower case 3, and the upper end is rotatably held by the cover 33 and protrudes upward. A slit 39 is formed in the cover 33 to hold one end thereof, and a boss 40 which abuts the other end of the torsion spring 38 is formed in the cover 33. Shielding wall 4 of valve 36
1 is defined in an arcuate shape with the axis 37 as the center of the radius, facing the arcuate wall 42 formed on the partition wall 30, and sealing ribs 43 are integrally formed on the shielding wall 41 and the upper and lower surfaces. is formed. Furthermore, protrusions 44 and 45 that protrude outward from the partition wall 31 are fixed to the shaft 37 of the valve 36, and claws 46 facing the protrusions 44 and 45 engage the operating portion 2.
5.

Therefore, a part of the connecting pipe 5, that is, the lower edge of the peripheral wall 47 of the rotary pipe 6 is provided with an air guide wall that guides the suction air to one side of the ventilation port 22 having a larger opening diameter when facing the nozzle 23. 48 is formed, and a shielding wall 51 that closes the outlet 50 of the edge suction air passage 29 is further formed on a part of the side plate 49 of the rotary tube 6.

In such a configuration, when the knob 27 of the operating section 25 is located at the position shown in FIGS. 1 and 3, the opening 28 of the wind speed adjusting plate 24 faces the ventilation opening 22 of the partition wall 20. Cleaning is carried out by connecting the rotary tube 7 to a vacuum cleaner via a suction hose or the like. In this state, the ventilation port 22 is fully opened, so the suction air flows from the opening 21 of the brush chamber 9 through the ventilation port 22. The dust is then sucked into the dust collecting section of the vacuum cleaner through the connecting pipe 5. This usage mode is for cleaning hard floors, and the rotating brush 8 does not rotate.

When cleaning a carpet, slide the operating section 25 to the B position and adjust the air speed adjustment plate 24 to adjust the ventilation opening 22.
The opening area of the nozzle 23 is reduced and only the nozzle 23 is opened.
As a result, the suction airflow increases the wind speed to the turbine 12.
is rotated together with the rotating brush 8.

When sucking up dust that adheres to the corners of a room regardless of the type of floor surface, slide the operation part 25 to the position C to close all the ventilation ports 22 including the nozzle 23. In conjunction with this movement, the valve 36 rotates in the opening direction. That is, when the claw 46 of the operating portion 25 moves from the position B to the position C, the protrusion 44 of the valve 36 is pushed. As a result, dust in the corner of the room can be removed from the suction port 32 formed at the corner of the main body 1 through the edge suction air path 29.
It is sucked into the side of the turbine chamber 10 through the air. When the operating section 25 is returned to the position B or A, the valve 36 is rotated in the closing direction by the force of the torsion spring 38. By pulling, the valve 36 receives an initial force and smoothly rotates in the closing direction.

As mentioned above, during carpet cleaning, the turbine 12 is rotated and the edge suction air passage 29 is opened when sucking dust from the corners, but in any case, when the main body 1 is running along the floor surface. Since the extension tube fitted to the rotary tube 7 is held, the connection tube 5 to the main body 1 is
The direction is rearward and upward, as shown in Fig. 7. Grasp the extension tube and lift the main body 1 from the floor.
The main body 1 rotates forward and downward about the rotation center 6a of the rotary tube 6. Based on the attitude of the main body 1 in FIG. to face. The movement of the shielding wall 51 and the wind guiding wall 48 is shown in FIG. 3 by solid lines and phantom lines.

In other words, when used for cleaning carpets,
When the main body 1 is moved away from the floor surface, the air guide wall 48 is automatically deflected in conjunction with this movement, and the air guide wall 48 detours the wind from the nozzle 23 to the side of the turbine 12 to open the turbine chamber 10. distribute it. Thereby, it is possible to significantly lower the rotational speed and rotational noise of the turbine 12 and the rotating brush 8. In the case of cleaning using the edge suction air passage 29, when the main body 1 is separated from the floor surface, the shielding wall 51 is automatically deflected in conjunction with this movement, and the edge suction air passage 29 is moved.
Since the outlet 50 of the main body 1 is closed, even if there is no valve 36 and the ventilation port 22 and the edge suction air passage 29 are opened at the same time, when the main body 1 is lifted, the ventilation port 2
The generation of noise caused by the wind from the edge suction air passage 29 interfering with the wind from the edge suction air passage 29 can be prevented.

When the main body 1 is joined to the floor surface, there is no leak hole in the lower surface of the main body 1, so when the turbine 12 is driven, there is no leak and the wind hitting the turbine 12 is strong, and the rotational efficiency of the turbine 12 is high. When dust is sucked from the edge suction air passage 29, there is no leakage from the leak hole, so the dust suction effect near the wall is excellent.

Since the present invention is constructed as described above, when the main body is separated from the floor surface, the wind toward the turbine is detoured by the wind guide wall to increase the rotational speed of the turbine and the rotating brush. Sound can be significantly reduced, and when dust is sucked in from the suction port formed at the lower side of the main unit, the edge suction air path is closed by a shielding wall when the main unit is separated from the floor. It can also be used to prevent noise caused by interference between the wind from the brush chamber and the wind from the edge suction air path.Furthermore, the leak hole on the bottom of the main body is omitted to prevent clogging with debris, and the leak This has effects such as preventing leakage from the holes, increasing the rotational efficiency of the turbine, and efficiently sucking up dust from the walls.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a perspective view, Figure 2 is a bottom view, Figure 3 is a partially cutaway plan view of the lower case, Figure 4 is a plan view of the edge suction air passage cover, and Figure 5 is edge suction air. 6 is an enlarged horizontal sectional view of the valve, FIG. 7 is a vertical sectional side view showing sections other than the connecting pipe, and FIG. 8 is a diagram showing the connection between the ventilation port and the connecting pipe. FIG. 3 is an exploded perspective view showing the relationship. 1...Main body, 5...Connecting pipe, 8...Rotating brush, 9...
Brush chamber, 10...turbine chamber, 12...turbine,
20... Partition wall, 22... Ventilation port, 24... Wind speed adjustment plate, 29... Edge suction air path, 32... Suction port, 4
8... Air guide wall, 50... Exit, 51... Shielding wall.

Claims (1)

[Scope of Claims] 1. A main body that runs on the floor is formed with a brush chamber that accommodates a rotating brush and a turbine chamber that accommodates a turbine that drives the rotating brush separated by a partition wall, and a brush chamber that accommodates a rotating brush and a turbine chamber that accommodates a turbine that drives the rotating brush are separated by a partition wall. A connecting pipe connected to a dust collection part of a vacuum cleaner and having a cylindrical rotating pipe with a front opening is attached so as to be movable up and down, and a part of the partition wall has a nozzle facing the lower part of the turbine, and A wind speed adjusting plate is provided along the partition wall to form a ventilation port opening opposite to the side position of the turbine, and to vary the opening area of a portion of the ventilation port excluding the nozzle, and a front opening of the rotary tube is provided. A suction port body for a vacuum cleaner, characterized in that a wind guide wall is formed on a lower edge of the nozzle to face the nozzle at a distance and to divert the suction air to the side of the turbine. 2 A main body that runs on the floor is formed by separating a brush chamber for storing rotating brushes and a turbine chamber for storing a turbine that drives the rotating brushes with a partition wall, and a dust collection section for the vacuum cleaner is provided at the rear of the turbine chamber. A connecting pipe having a cylindrical rotating pipe with a front opening is attached to the partition wall so as to be movable up and down, and the partition wall has a nozzle that faces a lower part of the turbine and is located at a side position of the turbine. A wind speed adjusting plate is provided along the partition wall to form ventilation ports opening oppositely to each other, and to vary the opening area of a portion of the ventilation port excluding the nozzle, and is opened in the main body at a lower side of the main body. An edge suction air passage is formed that communicates a small suction port with the turbine chamber, and is provided at the lower edge of the front opening of the rotary tube to face the nozzle at a distance, and to divert the suction air to the side of the turbine. A suction mouth body for a vacuum cleaner, characterized in that a wall and a shielding wall that shields an outlet of the edge suction air passage are formed.