JPH06319670A - Vacuum cleaner suction body - Google Patents

Abstract

(57) [Abstract] [Purpose] During the suction operation by the vacuum cleaner, it is possible to prevent the thin article from coming into close contact with the opening facing the floor and the rotating brush, and to prevent the suction airflow flowing through the suction port body. Maintain and maintain the rotating force of the rotating brush. [Structure] An air inlet 12 is formed in the suction inlet main body 1 so as to communicate with the outside thereof and the rotary brush chamber 4, and an openable / closable air inlet 12 is formed by a lid 14 so that the air inlet 12 can be connected to the air inlet 12 during a suction operation of a vacuum cleaner. The air is sucked into the rotary brush chamber 4 from the bottom surface side opening 4a of the rotary brush chamber 4 so that the suction force in the bottom surface side opening 4a is moderately reduced. A structure in which the air inflow hole 12 and the airflow from the opening portion 4a merge and enter into the chamber to rotate the turbine fan 6 and rotate the rotating brush 7 via the power transmission mechanism 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of an electric vacuum cleaner having a rotating brush, and in particular, to adjust the suction force from the floor surface by the cleaner, in other words, the suction force to the floor surface. The present invention relates to the suction port body of the electric vacuum cleaner which has taken the measures of.

[0002]

2. Description of the Related Art Generally, the suction port of an electric vacuum cleaner has a horizontally wide suction port, a narrow-mouth type suction port for sucking dust such as indoor corners, or a suction port attached to clothes. Various types are prepared according to the application, such as a brush type for removing dust, and each suction port body is configured so that it can be connected to the suction port of the electric vacuum cleaner through the attached hose or pipe. There is.

The present invention is intended for the wide-mouth type, which is most frequently used among the above various suction inlets. By the way, since this wide-mouth type suction inlet is mainly used for collecting dust on the floor, it can be used for various floor conditions such as between boards, tatami mats, carpets, or long-haired carpets. It is necessary to have a structure that allows

Conventionally, as a device capable of meeting the above-mentioned conditions, a device provided with a rotating brush facing a suction port facing the floor has been developed. FIG. 13 shows an example of the related art. The suction port body shown in this figure has a turbine fan that is rotationally driven by receiving a suction airflow generated by the suction force of an electric vacuum cleaner. To rotate the rotating brush.

That is, in FIG. 13, reference numeral 1 denotes a suction port main body, which is connected to the center of its rear end through a suction port (not shown) of a vacuum cleaner and a connecting accessory (not shown). The suction pipe 2 is provided. Further, a turbine chamber 3 communicating with the suction pipe 2 is provided inside the suction port main body 1,
A rotary brush chamber 4 having an opening on the bottom side facing the floor is partitioned and formed with a partition wall 5 interposed therebetween. A turbine fan 6 is provided in the turbine chamber 3 and a rotary brush 7 is provided in the rotary brush chamber 4. Has been done.

The rotary brush 7 is linked to the turbine fan 6 via a power transmission mechanism 8 so that the rotational force of the turbine fan 6 is transmitted to the rotary brush 7. Further, the turbine chamber 3 and the rotating brush chamber 4
A small vent hole 9a is formed in a portion of the partition wall 5 that opposes the turbine fan 6, and a large vent hole 9b is formed in a portion of the partition wall 5 that is separated from the turbine fan 6. The turbine chamber 3 and the rotary brush chamber 4 communicate with each other through two large and small vent holes 9b and 9a.

The large vent hole 9b can be freely opened and closed by a shutter member 10. The shutter member 10 has a knob 10a protruding from an operation window 11 formed in the suction port body 1.
By carrying out a sliding operation with 0a, it is possible to freely slide along the partition wall 5 in the length direction of the suction port body 1,
The large vent hole 9b is opened and closed.

The conventional suction inlet constructed in this way is
It is used by connecting the mouthpiece pipe 2 to a connecting accessory for connecting to an electric vacuum cleaner. In this usage state, the suction operation of the electric vacuum cleaner causes outside air to enter only through the bottom surface side opening 4a facing the floor surface of the rotary brush chamber 4 facing the floor surface. A suction airflow is generated which reaches the suction pipe 2 through the suction airflow 3.

Now, as shown in FIG. 13, when the large vent hole 9b is closed by the shutter member 10, the rotary brush chamber 4 and the turbine chamber 3 are communicated with each other only by the small vent hole 9a. In this state, the suction airflow is accelerated when passing through the small air holes 9a and blows against the turbine fan 6 at a high speed, so that the turbine fan 6 is rotationally driven, and further the rotary brush 7 is passed through the power transmission mechanism 8. Rotates. By the rotation of the rotary brush 7, for example, the dust accumulated in the carpet with long hair can be collected.

FIG. 14 shows a state in which the shutter member 10 is slid to open the large vent hole 9b. In this case, most of the suctioned airflow passes through the large ventilation hole 9b and does not hit the turbine fan 6, so that only a small amount of airflow is blown to the turbine fan 6 through the small ventilation hole 9a.
Therefore, the turbine fan 6 is not driven, and the rotating brush 7 also does not rotate. In this case, for example, it becomes possible to efficiently collect dust from a floor surface such as a board or tatami mat.

[0011]

However, in the case of the above-mentioned conventional suction inlet, the suction airflow generated by driving the vacuum cleaner faces the bottom surface side opening facing the floor of the rotary brush chamber 4. Since it is configured to enter into the suction port body 1 only from 4a, when a lightweight and easily deformable thin article, for example, a thin rug, is adsorbed to the bottom opening 4a of the rotary brush chamber 4, the opening 4a is opened. It may come into close contact with the rotating brush 7 facing the.

In such a state, not only the cleaning work by the electric vacuum cleaner is very difficult to perform, but also the thin rug closely attached to the rotating brush 7 causes an overload on the rotating force of the rotating brush 7. However, since the bottom opening 4a of the rotary brush chamber 4 is also blocked by the adsorbed rug, the suction airflow is blocked and the rotational force of the turbine fan 6 is significantly reduced. As a result, the rotary brush 7 stops. There was a problem that it would end up.

As the suction port body having the rotating brush, unlike the above, there is also a system in which the rotating brush is driven not by a turbine fan but by a separately prepared electric motor. However, there is a problem that the rotary brush stops due to the adsorption of a thin rug or the like on the rotary brush.

The present invention has been made in view of the above-mentioned problems, and in the suction operation by the electric vacuum cleaner,
By keeping the thin article such as a thin rug in close contact with the opening facing the floor surface and the rotating brush as much as possible, the suction airflow flowing through the suction port body was maintained and the rotating force of the rotating brush was maintained. It is intended to provide a suction port body of an electric vacuum cleaner.

[0015]

According to the present invention, a rotary brush chamber having an opening on the bottom side is formed in the suction port body as described above, and a turbine chamber communicating with the rotary brush chamber is formed. A turbine fan that is driven to rotate by receiving a suction airflow generated by the suction force of the electric vacuum cleaner is arranged, and a rotating brush that is interlockingly connected to the turbine fan through a power transmission mechanism is arranged in the rotating brush chamber. The object is an installed suction port body or a suction port body in which the rotary drive of the rotary brush is performed by an electric motor instead of the turbine fan.

In order to achieve the above object, according to the present invention, it is assumed that the suction port main body is connected to the outside of the main body and the rotary brush chamber, and an air inflow hole that can be opened and closed by a lid is formed. There is.

Further, the partition wall for partitioning the rotary brush chamber and the turbine chamber is provided with a ventilation means consisting of one or more ventilation holes, and a shutter member for adjusting the opening degree of the ventilation means is provided. In which the amount of air received by the turbine fan is adjusted by adjusting the position of the fan to switch whether the fan can rotate or not, the shutter member and the lid for opening and closing the air inlet hole can be integrally operated. Can be formed.

[0018]

With the suction port body having the above structure connected to the suction port of the electric vacuum cleaner and the electric vacuum cleaner is driven, when the air inlet is open, the suction force of the electric vacuum cleaner causes the rotating brush chamber to move. The air flows in not only from the bottom side opening but also from the air inflow hole. When air enters through the air inflow hole, the suction force generated at the bottom opening of the rotary brush chamber is reduced, so that it is possible to prevent thin objects and the like from adsorbing to the opening as much as possible.

However, since the air flow entering from the bottom opening of the rotary brush chamber and the air flow entering from the air inlet hole merge in the rotary brush chamber, the air flow to the turbine chamber is as strong as before. Therefore, the rotational force of the turbine fan can be maintained at the same level as the conventional one, and the rotational force of the rotary brush can be maintained.

On the other hand, when the air inflow hole is open, it is unavoidable that the suction force from the floor surface is weakened. For this reason, it is disadvantageous when a deep suction force is required, such as when cleaning a floor surface covered with a thick carpet or a long-roofed carpet. In such a case, by closing the air inflow hole with a lid as needed, a deep suction force that is not different from the conventional one can be obtained.

[0021]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a turbine suction inlet of an electric vacuum cleaner according to this embodiment. In this embodiment, the same reference numerals are given to the parts having the same configurations and operations as those of the above-mentioned conventional example. In FIG. 1, reference numeral 1 denotes a suction port main body formed in a rectangular shape in a plan view, and a suction port (not shown) of an electric vacuum cleaner and accessories such as a connection hose and a pipe are provided at the center of its rear end (see FIG. A suction pipe 2 is provided, which is connected and communicated via (not shown).

Inside the suction port body 1, a turbine chamber 3 communicating with the suction pipe 2 and a rotary brush chamber 4 having an opening on the bottom side facing the floor are adjacent to each other with a partition wall 5 in between. A turbine fan 6 is provided in the turbine chamber 3, and a rotary brush 7 is provided in the rotary brush chamber 4. Further, the turbine chamber 3 is the suction port body 1
Of the partition walls 5a and 5b formed on both sides in the longitudinal direction of
It is partitioned in a state where ventilation is blocked from the space portions 3a and 3b on both sides thereof.

The turbine fan 6 and the rotary brush 7 are interlockingly connected by a power transmission mechanism. That is, the power transmission mechanism is configured such that the belt 8a is provided between the respective rotary shafts 6a of the turbine fan 6 and the rotary shaft 7a of the rotary brush 7.
And transmits the rotational force of the turbine fan 6 to the rotating brush 7.

A small vent hole 9a is formed at a portion of the partition wall 5 facing the turbine fan 6, and the partition wall 5 is also provided.
A large vent hole 9b is formed in a portion separated from the turbine fan 6, and the turbine chamber 3 and the rotary brush chamber 4 communicate with each other through these large and small vent holes 9b and 9a. Further, the large ventilation hole 9b can be freely opened and closed by the shutter member 10.

The shutter member 10 is disposed in one space portion 3a adjacent to the turbine chamber 3 in the longitudinal direction of the suction port body 1 and the partition wall 5 from the space portion 3a.
The turbine chamber 3 is made to project along the partition wall 5 through a gap between the a and the partition wall 5. Moreover, it has a tab 10a protruding from the operation window 11 formed in the suction port body 1,
By sliding with the gripping piece 10a, it slides along the partition wall 5 in the longitudinal direction of the suction port body 1 to open and close the large vent hole 9b.

When the large vent hole 9b is closed by the shutter member 10, the rotary brush chamber 4 and the turbine chamber 3 are communicated with each other only through the small vent hole 9a. In this state,
When the incoming airflow passes through the small air holes 9a, it is accelerated at a high speed to rotate the turbine fan 6, and further, the rotating brush 7 is rotated via the power transmission mechanism 8. On the other hand, by sliding the shutter member 10, the large ventilation hole 9
When b is opened, most of the suction airflow is the large vent hole 9b.
Since it passes through a position separated from the turbine fan 6 via, the turbine fan 6 is not driven and the rotating brush 7 does not rotate.

FIG. 2 shows a cross section taken along the section line A--A in FIG. 1, and FIG. 3 shows a side surface corresponding to the direction of arrow B in FIG. 1 to 3, the other space 3b adjacent in the longitudinal direction of the suction port body 1 of the turbine chamber 3
An air inflow hole 12 is formed in a portion of the partition wall 5 facing the above. In addition, an opening 13 communicating with the air inflow hole 12 is formed in the upper surface portion of the suction port body 1 near the air inflow hole 12, whereby the rotary brush chamber 4 is closed.
2 communicates with the outside of the suction port body 1.

FIG. 4 shows a lid for opening and closing the air inflow hole 12. As shown in this figure, the lid body 14 is provided with a lid piece 14c capable of completely closing the air inflow hole 12 on one side of a guide piece 14b having a knob portion 14a. In the other space 3b,
The lid piece 14c extends along the partition wall 5, and the knob 14a has an opening 13
It is mounted so as to be slidable along the longitudinal direction of the suction port main body 1 in a state of slightly protruding from the suction port main body 1, and the knob portion 14a can be slid from the outside.

The opening 1 in which the knob 14a is projected
The length of 3 has a length corresponding to the moving stroke of the lid piece 14c from the fully opened state to the fully closed state of the air inflow hole 12. Further, in the mounted state of the lid body 14,
The upper surface of the guide piece 14b is configured to constantly close the bottom of the opening 13.

As shown by the solid line diagram in FIG. 1, the lid 14 is at the retracted open position, and the air inflow hole 1 as shown in FIG.
When 2 is fully open, the suction force of the electric vacuum cleaner causes the bottom opening 4a of the rotary brush chamber 4 and the air inlet 1
Air flows in from both 2 and. The air entering from the air inflow hole 12 is opened as shown by an arrow a in FIG.
To the rotary brush chamber 4 through the air inlet hole 12.

In this way, the air also flows in from the air inflow hole 12, so that the bottom surface side opening 4a of the rotary brush chamber 4 is formed.
Since the suction force generated in 1) is reduced, even if a thin rug or the like is present on the floor surface, it is possible to prevent the rug from adsorbing to the opening 4a as much as possible.

The air flow entering the rotary brush chamber 4 through the air inlet 12 is the opening 4 on the bottom side of the rotary brush chamber 4.
The air flow that has entered from a is merged in the rotary brush chamber 4, and for example, as shown in FIG.
In the state of being blocked by 0, the air flow merged from the small ventilation hole 9a enters the turbine chamber 3, whereby the turbine fan 6 rotates and the rotating brush 7 also keeps rotating.

By the way, as shown in FIGS. 2 and 3, when the air inflow hole 12 is open, the suction force from the floor surface direction becomes weak. For this reason, the lid 14 is closed and used when a carpet having a normal thickness is laid on the floor surface or when it is necessary to suck up dust in a deep part of a carpet or the like having long hair.

FIGS. 5 and 6 respectively show the states of the air inflow holes 12 when the lid 14 is in the forward closed position as shown by the phantom line in FIG. As shown in these figures, when the air inflow hole 12 is closed, the suction force of the vacuum cleaner acts exclusively on the bottom side opening 4a of the rotary brush chamber 4, so that it does not differ from the conventional deep suction. You can get better strength.

As described above, in the present embodiment, if the floor surface on which a thin rug is laid is cleaned while the air inlet hole 12 is closed by the lid 14, the rug is adsorbed and the rotary brush 7 is removed. It may stop, but at this time, if the lid 14 is opened and cleaned, the rotary brush 7 does not stop and smooth cleaning can be performed. Further, when it is necessary to suck up a carpet having a normal thickness or dust in a deep portion, the lid 14 is closed to perform cleaning with a strong suction force.

7 to 12 show another embodiment of the present invention. In these drawings, the air inlet hole 12 is provided in the partition wall 5 facing the one space 3a in which the shutter member 15 for closing the large vent hole 9b is provided, and the shutter member 15 allows the air inlet hole 12 to be provided. It also serves as the 12 open / close lids.

FIG. 10 shows the shutter member 15. As shown in this figure, the shutter member 15 has a lid piece 15c for blocking the air inflow hole 12 from one side of the guide piece 15b having a knob 15a, and a large vent hole 9b. Shutter piece 1 for
5d is hung vertically downward, and the suction port body 1 has a lid piece 15c and a shutter piece 1 in one space 3a.
5d is along the partition wall 5, and the knob 15a is slidably mounted along the longitudinal direction of the suction port body 1 with the knob 15a slightly protruding from the operation window 16, so that the knob 15a can be slid from the outside. Has become.

The length of the operation window 16 in which the knob 15a is inserted corresponds to the movement stroke of the lid piece 15c from the fully opened state to the fully closed state of the air inlet hole 12, and the shutter is set. The piece 15d has a length obtained by adding a length corresponding to the moving stroke from the fully opened state to the fully closed state of the large vent hole 9b. In addition, the shutter member 15
In the mounted state, the upper surface of the guide piece 15b is configured to constantly close the bottom portion of the operation window 16.

As shown by the solid line diagram in FIG. 7, the shutter member 15 is at the forward position, the air inflow hole 12 is fully opened as shown in FIG. 8 and FIG.
Is closed by the shutter piece 15d.
In this case, the suction force of the vacuum cleaner causes air to flow in from both the bottom surface side opening 4 a of the rotary brush chamber 4 and the air inflow hole 12. As shown by the arrow b in FIG. 8, the air that enters from the air inflow hole 12 takes a path to flow from the operation window 16 into the rotary brush chamber 4 through the air inflow hole 12.

11 and 12 respectively show the states of the air inflow hole 12 and the large vent hole 9b when the shutter member 15 is in the retracted position as shown by the phantom line in FIG. As shown in these figures, when the shutter member 15 is retracted to the intermediate position of the operation window 16, both the air inflow hole 12 and the large vent hole 9b are closed, and a deep suction force is obtained. .

Next, when the shutter member 15 is further retracted, both the air inflow hole 12 and the large ventilation hole 9b are opened and the rotary brush 7 is stopped.

As described above, in the present embodiment, the air inflow hole 1 can be operated only by operating the knob 15a of the shutter member 15.
2 and the position where both the large ventilation holes 9b are closed, the air inflow hole 1
Adjustment can be performed at three positions, that is, a position where the large ventilation hole 9b is kept closed by only opening 2 and a position where both the air inflow hole 12 and the large ventilation hole 9b are opened.

In each of the above embodiments, the turbine brush 6 provided in the turbine chamber 3 is driven to rotate by the suction airflow from the electric vacuum cleaner to rotate the rotary brush 7. Although not shown in the present invention, the present invention can also be applied to a system in which the turbine brush 6 is not provided and the rotary brush 7 is rotationally driven by an electric motor.

[0044]

As described above, according to the present invention, since the outside of the main body and the rotating brush chamber are communicated with each other, the air inlet hole which can be opened and closed by the lid is formed in the suction inlet main body. When the electric vacuum cleaner is driven and the air inlet is open, the suction force of the electric vacuum causes air to flow not only from the bottom opening of the rotary brush chamber but also from the air inlet. Since the suction force generated in the opening is reduced, it is possible to prevent the thin object or the like from adsorbing to the opening as much as possible.

Therefore, the problem that the rotary brush stops due to adsorption of a thin rug or the like, which cannot be solved by the prior art, can be solved by adding a relatively simple structure,
It has an excellent effect that smooth cleaning can be performed even on a floor surface covered with such a thin object.

Further, since the air inflow hole communicates the rotary brush chamber with the outside of the suction port main body, in the case where the turbine fan is provided, the partition wall separating the rotary brush chamber and the turbine chamber is provided. The suction airflow passing through the provided ventilation means is the same as the airflow from the bottom opening of the rotating brush chamber,
It is a combination of the air flows from the air inflow holes. Therefore, the suctioned airflow enters the turbine chamber with the same strength as the conventional one, which does not have the air inflow hole, and thus the above-described actions and effects are achieved without the disadvantage that the rotational force of the fan decreases. .

[Brief description of drawings]

FIG. 1 is a plan view schematically showing the configuration of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the section line AA in FIG.

FIG. 3 is a side view corresponding to the arrow B direction in FIG.

FIG. 4 is an enlarged perspective view showing a positional relationship between a lid and a bypass hole.

FIG. 5 is a sectional view corresponding to FIG. 2 showing a closed state of a bypass hole.

6 is a side view corresponding to the arrow C in FIG.

FIG. 7 is a plan view schematically showing the configuration of another embodiment of the present invention.

8 is a cross-sectional view taken along the section line D-D in FIG.

9 is a side view corresponding to the arrow E in FIG.

FIG. 10 is an enlarged perspective view showing the positional relationship between the lid and the bypass hole.

FIG. 11 is a sectional view corresponding to FIG. 8 showing a closed state of the bypass hole.

12 is a side view corresponding to the arrow F in FIG.

FIG. 13 is a plan view schematically showing the configuration of a conventional example.

FIG. 14 is a plan view of a main part showing a shutter position when the rotary brush is stopped.

[Explanation of symbols]

 1 Suction Port Main Body 3 Turbine Chamber 4 Rotating Brush Chamber 4a Bottom Side Opening 5 Partition Wall 6 Turbine Fan 7 Rotating Brush 8 Power Transmission Mechanism 9a Small Air Vent 9b Large Vent 10 Shutter Member 12 Air Inlet 14 Lid 15 Shutter 15c Lid

Claims (3)

[Claims] 1. A rotary brush chamber having an opening on the bottom side and a turbine chamber communicating with the rotary brush chamber are formed in a suction port body, and suction airflow generated by suction force of an electric vacuum cleaner is formed in the turbine chamber. A suction fan body, in which a turbine fan that is rotationally driven by being received is disposed, and a rotary brush that is interlockingly connected to the turbine fan through a power transmission mechanism is disposed in the rotary brush chamber, is provided in the suction port body. A suction port body for an electric vacuum cleaner, characterized in that an air inflow hole is formed which communicates with the outside of the main body and the rotary brush chamber and which can be opened and closed by a lid body. 2. A partition wall for partitioning the rotary brush chamber and the turbine chamber is provided with a ventilation means composed of one or more ventilation holes, and a shutter member for adjusting the opening of the ventilation means is provided. It is configured to adjust the amount of air received by the turbine fan by position adjustment to switch whether the fan can rotate or not, and further, the shutter member,
The suction port body of the electric vacuum cleaner according to claim 1, wherein a lid body for opening and closing the air inflow hole is formed so as to be integrally operable. 3. A rotary brush chamber is formed in the suction port body,
In a suction port body in which a rotary brush rotatably driven by an electric motor is disposed in the rotary brush chamber, the suction port body communicates with the outside of the main body and the rotary brush chamber, and
A suction port body for an electric vacuum cleaner, wherein an air inflow hole that can be opened and closed is formed by a lid body.