JP3299443B2 - Floor suction tool for vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction tool for a vacuum cleaner having a rotary brush, and more particularly to an improvement in dust suction performance from a cleaning surface.

[0002]

2. Description of the Related Art Conventionally, floor suction devices for a vacuum cleaner of this type include, for example, Japanese Utility Model Publication No. 54-38786 and Japanese Utility Model Application No. 7-6941 (Japanese Utility Model No. 3019056). FIG. 10 shows the structure of a floor suction device for a vacuum cleaner disclosed in Japanese Utility Model Publication No. 54-38786.
This will be described below with reference to FIGS.

FIG. 10 is an internal structural view showing a conventional floor suction device for a vacuum cleaner, FIG. 11 is a sectional view taken along the line AA of FIG.
2 is a sectional view taken along the line BB in FIG. In the figure, 1 is a floor suction tool, 2 is a rotary brush, 4 is a brush cover surrounding the circumference of the rotary brush 2 and has a suction portion 3 at a lower portion, 5 is a turbine case, and 6 is one end opened to the brush cover 4. A turbine nozzle having the other end opened to the turbine case 5, a turbine 7 rotatably supported in the turbine case 5, and a floor nozzle 8 attached to the turbine case 5 and connected to an extension pipe (not shown). A pipe, 9 is a fan case fixed to the turbine 7, 10 is an exhaust fan arranged in the fan case 9, 11 is a nozzle connected to a discharge port of the fan case 9 and opened near the suction part 3, 12 Is a shaft of the turbine 7, and 13 is a drive belt stretched between the shaft 12 and the rotating brush 2.

In the above configuration, when the operation of the vacuum cleaner (not shown) is started, the outside air enters through the suction portion 3 and is sucked by the vacuum cleaner body (not shown) while rotating the turbine 7. At this time, the rotating brush 2 and the exhaust fan 10 also rotate with the rotation of the turbine 7. In particular, the suction air from the exhaust fan 10 is discharged from the nozzle 11 opened near the suction portion 3 to reach the rotating brush 2. At the same time, the dust in the non-existing portion is blown off, and at the same time, is sucked together with the outside air entering the suction portion 3. As a result, dust that accumulates in corners of the room that the rotating brush 2 cannot reach can be reliably sucked.

However, in this configuration, it is difficult to remove the hair from the rotating brush 2 when the hair or the like is entangled with the rotating brush 2. The point that the hair is easily removed from the rotating brush is described, for example, in JP-B-61-49.
No. 967 is disclosed, and its configuration is shown in FIG.
3 will be described.

FIG. 13 is a plan view showing another conventional floor suction device for a vacuum cleaner. In the figure, reference numeral 14 denotes an opening / closing lid for taking out the rotating brush from the main body case 15, which is detachably provided at an upper front part of the main body case 15. 16
Is a stopper for detachably forming the opening / closing lid 14 on the main body case 15. With this configuration, the rotating brush can be easily taken out of the main body case 15, and cleaning of the rotating brush becomes easy. However, in the conventional configuration shown in FIG. 13, it was impossible to suck the dust on the front surface of the main body case 15 by the rotating brush. In addition, since the floor suction device always moves on the cleaning surface and cleans it, the floor suction device easily collides with a chair or table placed in a room, a wall surface, a sill, or the like. Then there was a risk of deformation or falling off.

Further, in the floor suction device for a conventional vacuum cleaner shown in FIGS. 10 to 12, outside air other than the suction air discharged from the nozzle 11 is sucked into the suction portion 3, but the suction air is sucked. The structure for preventing the outside air other than the above from being sucked into the suction portion is described in, for example, Japanese Utility Model Publication No. 39-3655.
It is disclosed in Japanese Patent Publication No. 3 and its configuration will be described below with reference to FIG.

FIG. 14 is a sectional view of a main part showing another conventional floor suction device for a vacuum cleaner. In the figure, reference numeral 17 denotes a shielding brush which is provided so as to hang down from the lower surface of the main body case 15 to the floor surface X, and is formed so as to surround the suction portion 3 and the nozzle 11. However, in this configuration, since the shielding brush 17 is provided in front of the suction unit 3, it is difficult for the shielding brush 17 to push or entangle the dust on the floor surface and to move the dust to the suction unit 3. Met. In order to prevent such a drawback, for example, it is conceivable that the shielding brush 17 is made of a soft material. However, since the exhaust pressure from the electric blower 19 housed in the cleaner main body 18 is strong, the shielding brush 17 can be easily formed. There is a possibility that the exhaust gas leaks from the shield brush 17 due to deformation. In addition, since the exhaust air from the electric blower 19 has a high temperature, a heat-resistant material must be used for the material of the shielding brush 17, which is expensive.

[0009]

In the floor suction device for a vacuum cleaner having the above structure, dust is left behind when the vacuum cleaner is operated, particularly when cleaning the corners of a room, the vicinity of a chair or a table. When the floor suction tool collided with furniture or the like, the main body case was deformed, or the opening / closing lid was dropped from the main body case. Furthermore, when operating the vacuum cleaner, the suction airflow noise from the floor suction tool leaks to the outside, resulting in a floor suction tool having a high noise value.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. By forming an exhaust outlet from a blower fan below a floor suction device, dust on the floor surface is lifted and sucked. The purpose of the present invention is to obtain a floor suction device for a vacuum cleaner capable of improving performance, and a floor suction device for a vacuum cleaner capable of improving a sound insulation effect by hanging a part of a bumper on a floor surface. And

[0011]

In the floor suction device for a vacuum cleaner according to the present invention, a main body case connected to a main body of the vacuum cleaner via a hose or the like, and a rotating brush are housed in front of the main body case. A brush storage chamber having a suction port formed in a lower part and an upper part opened, and an opening / closing lid that removably covers the opening of the brush storage chamber; The ventilation path is used to guide outside air to the suction port.

[0012] Further, the main body case includes a driving body for driving the rotary brush, a blowing fan interlocked with the driving body via a shaft, and a blowing chamber for accommodating the blowing fan, and one end of the blowing chamber. Has an intake port through which outside air is sucked, and an intermediate port at the other end communicating with the ventilation path.

A part of the ventilation passage communicates with the brush storage chamber.

A main body case connected to the cleaner main body via a hose or the like and including an upper case and a lower case; a bumper made of a soft material interposed at a joint between the upper case and the lower case; A brush storage chamber for storing a rotating brush at the front side, forming a suction port at a lower part, and opening at an upper part; an opening / closing lid detachably covering the opening of the brush storage chamber and formed of a double wall; A ventilation path formed by the internal space of the wall to introduce outside air, a connection ventilation path provided in the bumper and communicating with the ventilation path,
An exhaust ventilation path is provided in the main body case, one end of which communicates with the connection ventilation path and the other end communicates with the vicinity of the suction port.

A main body case connected to the cleaner main body via a hose or the like and comprising an upper case and a lower case; a bumper made of a soft material interposed at a joint between the upper case and the lower case; A brush storage chamber for storing a rotating brush at the front of the case and forming a suction opening at a lower portion and having an upper opening, an opening / closing lid detachably covering the opening of the brush storage chamber and formed of a double wall; A ventilation path formed by the inner space of the double wall and introducing outside air, a connection ventilation path provided in the bumper and communicating with the ventilation path, and a shielding piece hanging down to the vicinity of the surface to be cleaned are provided on the bumper, An exhaust air passage is formed by the shielding piece and the lower case, and has one end communicating with the connection ventilation passage and the other end communicating with the vicinity of the suction port.

Further, a main body case connected to the cleaner main body through a hose or the like and comprising an upper case and a lower case; a bumper made of a soft material interposed at a joint between the upper case and the lower case; A brush storage chamber for storing a rotating brush at the front of the case and forming a suction opening at a lower portion and having an upper opening, an opening / closing lid detachably covering the opening of the brush storage chamber and formed of a double wall; A ventilation path formed by the inner space of the double wall to introduce outside air, a connection ventilation path provided in the bumper and communicating with the ventilation path, a front shielding piece hanging down to the bumper near a surface to be cleaned, and a cover; Provide a rear shielding piece with a gap between the cleaning surface,
An exhaust air path formed by the front shielding piece and the rear shielding piece and having one end communicating with the connection ventilation path and the other end communicating with the vicinity of the suction port is provided.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention is shown in FIGS. 1 to 6 and will be described with reference to these drawings. 1 is a perspective view of a floor suction device for a vacuum cleaner according to Embodiment 1, FIG. 2 is a perspective view of the floor suction device for a vacuum cleaner shown in FIG. 1, FIG. 3 is a bottom view, and FIG. FIG. 5 is a perspective view showing the opening / closing lid of the surface suction device, FIG. 5 is a cross-sectional view showing the floor surface suction device, and FIG. 6 is a longitudinal sectional view of the floor surface suction device. In the figure, arrows indicate the flow of outside air. In FIG. 1 , reference numeral 20 denotes a cleaner main body having a built-in electric blower (not shown), and reference numeral 21 denotes a hose having one end connected to the cleaner main body 20 and the other end connected to an extension tube 22, respectively. Reference numeral 23 denotes a floor suction device, and a connection pipe 24 formed at the rear is connected to the extension pipe 22.

In FIG . 2, reference numeral 25 denotes a main body case of the floor suction device 23 formed by the upper case 25A and the lower case 25B . As shown in FIG.
6. A connection pipe storage chamber 27 communicating with the brush storage chamber 26 and storing the distal end 24A of the connection pipe 24 is provided at the rear center, and a blower chamber 28 is provided at the rear side. Brush storage room 2
6, an upper opening 29 is formed on the upper surface, and a suction port 30 is formed on the lower surface, as shown in FIG. Reference numeral 32 denotes a plurality of dust removing pieces attached to the outer surface of the rotating brush 31. The dust removing pieces 32 sweep dust on the floor surface X into the suction port 30 while rotating.

As shown in FIG . 6, an intake port 33 communicating with the connection pipe 24 is formed at the rear of the blower chamber 28, and an intermediate port 35 is formed above a boundary wall 34 with the brush storage chamber 26 at the front. ing. Reference numeral 37 denotes a blower fan,
It is fixedly housed in a shaft 36 penetrating substantially in parallel with the rotating brush 31. Reference numeral 38 shown in FIG. 5 is a driving body composed of a turbine 38A fixed to the end of the shaft 36, and is housed in the distal end 24A of the connecting pipe 24. 39 is disposed at the boundary 40 between the brush storage chamber 26 and the connection pipe storage chamber 27,
A slidable slide plate for freely changing the connection air passage area between the brush storage chamber 26 and the connection pipe storage chamber 27. When the connection air passage area is reduced, all the outside air from the suction port 30 is guided to the turbine 38A and the turbine 38A. To rotate. Figure
As shown in FIG. 2, a knob 39A at one end of the slide plate 39 protrudes outside the main body case 25. In FIG.
Showing 41 are wound at an end portion of the other end portion and the rotary brush 31 of the shaft 36, a belt for transmitting the rotation of the driver 38 to the rotary brush 31.

In FIG . 6, reference numeral 42 denotes an exhaust ventilation passage formed inside the brush storage chamber 26 by forming the front wall 43 in front of the brush storage chamber 26 in a double manner. The floor 42 extends from the upper surface to the lower surface of the lower case 25B. It extends substantially perpendicular to the plane. 4
Reference numeral 4 denotes an air outlet provided on the lower surface of the exhaust air passage 42, which is arranged near the front of the air inlet 30. Numeral 45 is a bumper made of a soft material sandwiched between the upper case 25A and the lower case 25B and also serving to seal the joint surface between the two cases. A connecting ventilation passage 46 is formed. Reference numeral 47 denotes a thin plate-shaped shielding piece made of a soft material that hangs substantially vertically from the bumper 45 to the vicinity of the floor surface X, and a front shielding piece 47A provided on a front portion of the bumper 45 as shown in FIG. And side shield pieces 47B provided on both side portions.

Reference numeral 48 shown in FIGS. 3 and 6 denotes a shielding member made of a soft material attached to the bottom surface of the lower case 25B in parallel with the longitudinal direction of the suction port 30.
As well as drooping. In FIG. 3, 49 is a front wheel, 5
Numeral 0 denotes rear wheels provided on the bottom surface of the lower case 25B. 51 shown in FIGS. 2, 4, and 6 is a brush storage chamber 2.
An opening / closing lid for detachably covering the upper opening 29 of the sixth with a stopper 52, the upper surface is formed by a double wall, and a ventilation passage 53 is provided in the internal space. One end 53A of the ventilation passage 53 is connected to the intermediate port 35, and the other end is connected to the ventilation passage 4 for connection.
6 respectively. The opening / closing lid 51 is a rotating brush 3
When hair, dust, or the like is entangled or adhered to 1, the rotating brush 31 is easily taken out of the brush storage chamber 26 so that the hair or the like can be easily removed. As shown in FIG.
A plurality of auxiliary passages 54 are formed on a boundary surface 55 of the ventilation passage 53 formed in the opening / closing lid 51 with the brush storage chamber 26, and communicate the ventilation passage 53 and the brush storage room 26.

In the first embodiment of the present invention configured as described above, when the electric blower (not shown) in the cleaner main body 20 is operated, the outside air containing dust on the floor surface is supplied to the floor suction device 23. , The turbine 38A housed in the distal end portion 24A of the connection pipe 24 is rotated, and is sucked into the cleaner body 20 via the connection pipe 24, the extension pipe 22 and the hose 21. At this time, the blower fan 37 connected to the turbine 38A via the shaft 36 and the rotating brush 3 connected to the shaft 36 via the belt 41
1 also rotates.

With the rotation of the blower fan 37, outside air enters through the intake port 33, is accelerated, and is accelerated through the intermediate port 35.
The air is sent out into the ventilation passage 53 formed in the first air passage. Ventilation path 53
The outside air further passes through the connection ventilation passage 46 provided in the bumper 45, also passes through the exhaust ventilation passage 42 formed in the lower case 25B, and collides perpendicularly with the floor surface X from the air outlet 44. The dust on the floor X is blown up, enters the suction port 30 together with the dust, and receives the rotational force of the rotating brush 31 to connect the connection pipe 2.
4 to the cleaner body 1.

According to the first embodiment, the outside air is forcibly blown to the vicinity of the suction port 30 by the dedicated blower fan 37.
Since a ventilation path for blowing off dust on the floor surface and forcibly sending the dust to the suction port 30 is provided in the opening / closing lid 51 for taking out the rotating brush 31, dust suction performance near the suction port 30 is improved. Further, the floor suction device 23 is likely to collide with a chair or table placed in the room, a wall surface, a sill, or the like in order to always move on the cleaning surface and clean, but the opening / closing lid 51 is formed double. By doing so, the strength is greatly increased, and deformation and the like can be prevented. Further, by forming the opening / closing lid 51 doubly, the sound generated when the rotating brush 31 rotates and the sound of collision when the dust removing piece 32 collides with the floor surface X are blocked by the ventilation passage 53. Also, the effect of noise reduction can be achieved.

The upstream end of the ventilation passage 53 and the intermediate port 3
5, when the lid 51 is attached to the upper opening 29 of the opening / closing lid 51,
Since it is formed so as to be joined, no special operation such as alignment is required. That is, by attaching the opening / closing lid 51 to the upper opening 29, the outside air that has entered the ventilation chamber 28 through the intake port 33 is reliably blown into the ventilation path 53 through the intermediate port 35. It is needless to say that the provision of a soft member at the junction between the upstream end of the ventilation passage 53 and the intermediate port 35 can more reliably prevent leakage or intrusion of outside air.

Further, the front wall 43 of the brush storage chamber 26 is double-formed to provide a ventilation passage 42, and the bumper 45 has a ventilation passage 53 at one end of the opening / closing lid 51 and a ventilation passage 42 at the other end. Is provided, the outside air from the ventilation chamber 28 surely passes through the opening / closing lid 51 and enters the connection ventilation path 46, and is guided to the outlet 44 near the suction port 30. Can be Further, the floor suction device 23 easily collides with furniture or the like in the room at the time of the operation, but the deformation and breakage can be prevented because the front wall 43 is formed double.

Further, a plurality of auxiliary passages 54 formed in the ventilation passage 53 of the opening / closing lid 51 communicate the ventilation passage 53 and the brush storage chamber 26, so that the air outlet 44 and the suction port 30 are provided.
However, even if it is covered with paper or cloth, or the fur of a carpet,
Outside air enters the brush storage chamber 26 from the ventilation passage 53 via the auxiliary passage 54, and can rotate the turbine 38A without stopping. That is, even when the air outlet 44 and the suction port 30 are closed, the rotating brush 31 can rotate, so that the dust on the floor surface X is rolled up and reliably connected with the outside air from the auxiliary passage 54 to the connection pipe 24. Can be sucked into.

Embodiment 2 FIG. 7 is an enlarged cross-sectional view of a main part of a floor suction device for a vacuum cleaner according to a second embodiment of the present invention.
7 is an exhaust air passage formed between the front shield member 7 and the front shielding piece 47A provided on the bumper 45. Y is a carpet with relatively long hair.

When the floor suction device 23 is operated in this state,
The outside air that has passed through the opening / closing lid 51 enters the exhaust air path 56 via the connection ventilation path 46. At this time, the front shielding piece 47A
Holds down the fluff of the carpet Y, so that the closing of the exhaust air path 56 by the fluff of the carpet Y is prevented. That is, the outside air can surely enter the brush storage chamber 26.

Accordingly, the fur of the carpet Y blocks the entire suction port 30 and the vacuum pressure in the brush storage chamber 26 rises to adsorb the floor suction device 23 to the carpet Y. The brush enters the brush storage chamber 26 while moving the dust on the surface of the brush. For this reason, the vacuum pressure in the brush storage chamber 26 does not rise extremely, and the floor suction device 23 can move the carpet Y smoothly, and the rotating brush 31 also rotates to scrape out the dust inside the fur of the carpet Y. be able to. By providing a communication path 57A at the lower end of the front wall A57 for connecting the exhaust air path 56 and the suction port 30, even a carpet Y with a long bristle foot has a communication path 5A.
7A can be prevented from being blocked.

Embodiment 3 FIG. 8 is a longitudinal sectional view of a floor suction device for a vacuum cleaner according to a third embodiment of the present invention. In the figure, 58 is a front wall A5
The rear shielding piece made of a soft material provided on the bumper 45 for forming the exhaust air path 56 with the front shielding piece 47A, and the exhaust air path 56 has a front shielding function by external force or the like. The piece 47A comes into contact with the rear shielding piece 58,
A thin plate-shaped reinforcing piece exhaust air passage 56 joining lest front shield piece 47A and the rear shield piece 58 is cut off partially, formed with a plurality with a predetermined interval in the longitudinal direction of the exhaust air path 56 . Although the front end of the front shielding piece 47A is substantially in contact with the floor surface X, the rear shielding piece 58 forms a gap between the front shielding piece 58A and the floor surface X, so that even when cleaning the carpet Y with long hairs, the front shielding piece 58A can be used. Since the piece 47A presses down the bristle feet, the exhaust air path 56 is not blocked.

In this state, even if the front shielding piece 47A is deformed toward the brush storage chamber 26 of the carpet Y with long hairs, the rear shielding piece 58 is also deformed toward the brush storage chamber 26 by the reinforcing piece 59. The exhaust air path 56 is secured, and the outside air is reliably sucked into the brush storage chamber 26 from the exhaust air path 56.

Embodiment 4 FIG. FIG. 9 is a partial cross-sectional view of a floor suction device for a vacuum cleaner according to a fourth embodiment of the present invention.
In the figure, 38A is a rotating brush 3 via a belt 41.
1 is a driving body constituted by a motor 60 for rotating the motor 1. The blower fan 37 is housed in the blower chamber 28 by the shaft 36 of the electric motor 60. In such a structure, by operating the electric motor 60, the blower fan 37 also rotates, and outside air enters from the intake port 33, passes through the intermediate port 35, enters the ventilation path 53 of the opening / closing lid 51, and enters the suction port. Sucked in 30. That is, the drive source for rotating the blower fan 37 is not limited to the turbine 38A, but may be any drive body as long as the blower fan 37 can rotate.

[0034]

As described above, the floor suction device for a vacuum cleaner according to the present invention has a brush storage chamber in which a rotating brush is stored in front of a main body case, a suction port is formed in a lower portion, and an upper portion is opened. An opening / closing lid that removably covers the opening of the brush storage chamber. The opening / closing lid is formed by a double wall, and the internal space is used as a ventilation path, and the outside air is guided to the suction port by the ventilation path. In addition to improving the dust suction performance, even if the suction tool collides with furniture or the like during cleaning, it is possible to prevent the opening / closing lid from being damaged or deformed. In addition, the ventilation path of the opening / closing lid can also be expected to have a sound insulating effect of the rotating noise generated from the rotating brush due to the internal air layer.

Further, the main body case is provided with a blower chamber for accommodating a blower fan. One end of the blower chamber is provided with an intake port through which outside air is sucked, and the other end is provided with an intermediate port communicating with the ventilation path of the opening / closing lid. When attaching the opening / closing lid to the main body case, the ventilation path of the opening / closing lid can be joined to the middle port of the blower fan,
When the opening / closing lid is attached to / detached from the main body case, no special operation such as positioning is required, and the operation can be performed easily.

Also, since a part of the ventilation path communicates with the brush storage chamber, even if the suction opening is blocked by the bristle of the carpet during cleaning, the outside air enters the brush storage chamber. The cleaning of the floor can be continued without stopping the rotation.

Further, the bumper is provided with a connection ventilation path communicating with the ventilation path of the opening / closing lid, and the body case is provided with an exhaust ventilation path having one end communicating with the connection ventilation path and the other end communicating with the vicinity of the suction port. Therefore, there is an effect that the ventilation passage of the opening / closing lid and the ventilation passage of the exhaust of the main body case are reliably communicated. Furthermore, even when the floor suction tool collides with furniture or the like, since the respective ventilation paths are formed by the double walls, it is useful for preventing deformation and breakage of the entire floor suction tool.

Further, a shielding piece hanging down to the vicinity of the surface to be cleaned is provided on the bumper, and an exhaust air path formed by the shielding piece and the lower case and having one end communicating with the connection ventilation path and the other end communicating with the vicinity of the suction port is provided. Because of this, outside air on the floor surface outside the shielding piece is restricted from entering the suction port by the shielding piece, and the outside air by the blower fan blows up dust on the floor surface and moves it to the suction port reliably. Can be.

The bumper is provided with a rear shielding piece having a gap between the front shielding piece hanging down to the vicinity of the floor to be cleaned and the surface to be cleaned, and one end is formed by the front shielding piece and the rear shielding piece and one end is connected to a ventilation passage for connection. And an exhaust air path that communicates with the vicinity of the suction port at the other end, so that the outside air forced to be blown to the blower fan can reliably blow off dust on the floor surface and move to the suction port.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing a floor suction device for a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 3 is a bottom view showing the floor suction device for the vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view showing an opening / closing lid of the floor suction device for a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 5 is a cross-sectional view showing the floor suction device for the vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 6 is a longitudinal sectional view showing the floor suction device for the vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 7 is a partially cutaway vertical sectional view showing a floor suction device for a vacuum cleaner according to Embodiment 2 of the present invention.

FIG. 8 is a longitudinal sectional view showing a floor suction device for a vacuum cleaner according to Embodiment 3 of the present invention.

FIG. 9 is a partially cutaway plan view showing a floor suction device for a vacuum cleaner according to Embodiment 4 of the present invention.

FIG. 10 is a perspective view of an internal structure showing a floor suction device for a conventional vacuum cleaner.

11 is a sectional view taken along line AA in FIG.

FIG. 12 is a sectional view taken along the line BB in FIG.

FIG. 13 is a plan view showing another conventional floor suction device for a vacuum cleaner.

FIG. 14 is a longitudinal sectional view of a main part showing another conventional floor suction device for a vacuum cleaner.

[Explanation of symbols]

23 floor suction device, 25 body case, 26 brush storage room, 28 blower room, 30 suction port, 31 rotating brush, 33 suction port, 35 middle port, 37 blower fan,
38 drive body, 42 exhaust passage, 43 front wall, 4
5 bumper, 46 air passage for connection, 47 shielding piece, 5
1 Opening / closing lid, 53 ventilation passage, 54 auxiliary passage, 56 exhaust air passage.

Continuation of the front page (56) References Japanese Patent Publication No. 61-49967 (JP, B1) Japanese Patent Publication No. 61-42572 (JP, B1) Japanese Utility Model No. 54-38786 (JP, Y1) Japanese Patent Publication No. 39-36553 (JP , Y1) Patent 3009350 (JP, B2) Registered utility model 3019056 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/02-9/08

Claims (6)

(57) [Claims] A main body case connected to the main body of the cleaner via a hose or the like; a brush housing chamber for housing a rotary brush in front of the main body case, forming a suction port in a lower part, and opening an upper part; An opening / closing lid that removably covers the opening of the brush storage chamber, wherein the opening / closing lid is formed of a double wall, and an internal space thereof is used as a ventilation path, and outside air is guided to the suction port by the ventilation path. Floor suction tool for vacuum cleaner. 2. A drive unit for driving a rotary brush in the main body case, a blower fan interlocked with the drive unit via a shaft, and a blower chamber for housing the blower fan, one end of the blower chamber The floor suction device for an electric vacuum cleaner according to claim 1, wherein a suction port through which outside air is sucked is provided, and an intermediate port communicating with the ventilation path is provided at the other end. 3. The floor suction device for a vacuum cleaner according to claim 1, wherein a part of the ventilation passage communicates with the brush storage chamber. 4. A main body case connected to the cleaner main body via a hose or the like and comprising an upper case and a lower case; a bumper made of a soft material interposed at a joint between the upper case and the lower case; A brush storage chamber for storing a rotating brush at the front of the case and forming a suction opening at a lower portion and having an upper opening, an opening / closing lid detachably covering the opening of the brush storage chamber and formed of a double wall; A ventilation path formed by the internal space of the double wall and introducing outside air, a connection ventilation path provided in the bumper and communicating with the ventilation path,
A floor suction device for a vacuum cleaner, wherein an exhaust air passage is provided in the main body case, one end of which is in communication with the connection air passage, and the other end of which is in communication with the vicinity of the suction port. 5. A device connected to the cleaner body via a hose or the like.
Body case consisting of an upper case and a lower case,
Made of soft material interposed between the case and the lower case
Bumper and rotating brush stored in front of main body case
The lower part has a suction opening and the upper part is open
The storage chamber and the opening of the brush storage chamber are detachable.
An opening / closing lid formed of a covering double wall, and an empty space inside the double wall.
A ventilation passage formed between the air passages for introducing outside air;
A connection ventilation passage provided in the par and communicating with the ventilation passage, and a shielding piece hanging down to the vicinity of the surface to be cleaned is provided in the bumper.
One end formed by the shielding piece and the lower case
The other end communicates with the connection ventilation path and communicates with the vicinity of the suction port.
A floor suction device for a vacuum cleaner, comprising an exhaust air passage . 6. A vacuum cleaner main body connected via a hose or the like.
Body case consisting of an upper case and a lower case,
Made of soft material interposed between the case and the lower case
Bumper and rotating brush stored in front of main body case
The lower part has a suction opening and the upper part is open
The storage chamber and the opening of the brush storage chamber are detachable.
An opening / closing lid formed of a covering double wall, and an empty space inside the double wall.
A ventilation passage formed between the air passages for introducing outside air;
A connection ventilation passage provided in the par and communicating with the ventilation passage, and a front shielding piece hanging down to the vicinity of the surface to be cleaned on the bumper;
Providing a rear shield piece having a gap between the surface to be cleaned,
One end is formed by the front shielding piece and the rear shielding piece,
A drain communicating with the continuation ventilation passage and the other end communicating with the vicinity of the suction port.
A floor suction device for a vacuum cleaner, comprising a ventilation path .