JP2000350684A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner being sanitary and providing a sufficient cleaning efficiency by reducing exhaust from the cleaner. SOLUTION: In this vacuum cleaner in which air exhausted from a motor- driven fan in a cleaner body is made to flow back into the rotary brush compartment of a floor brush 54 via a hose 24 and extension pipes 40, 41, a floor brush body is formed with a guide hole 74 communicated with an exhaust reflow path (passage) to take in outside air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas recirculation (circulation) type vacuum cleaner in which exhaust gas from an electric blower built in a cleaner body is recirculated to a floor suction tool or the like via a hose or a pipe. About.

[0002]

2. Description of the Related Art Conventionally, in general vacuum cleaners,
The exhaust from the electric blower built into the main body of the vacuum cleaner is exhausted to the outside through the exhaust port formed on the back of the main body, etc. Since all exhaust air is exhausted, the exhaust air has a strong momentum, and there is a disadvantage that the air on the floor or carpet is so hygienic that the dust on the floor or carpet is soared and diffused.

In view of this drawback, a circulation path is formed so that the exhaust air from the electric blower is recirculated to the floor suction device, and the exhaust air is blown toward the surface to be cleaned in the floor suction device, so that dust on the surface to be cleaned is removed. There is a known configuration in which the air is sucked up.

[0004] However, in the above configuration, when the floor suction tool is lifted during cleaning, there is a problem that dust on the surface to be cleaned is diffused by exhaust air blown from the circulation path toward the surface to be cleaned. is there.

[0005] In addition, simply exhausting air from the circulation channel has a small air volume and a low suction force at the deep part of the surface to be cleaned, so that it is difficult to sufficiently remove dust that has entered the fur of the fur, such as a carpet.
There was a disadvantage that the cleaning efficiency was not sufficient.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has a reduced sanitation by reducing exhaust of a vacuum cleaner.
It is another object of the present invention to provide a vacuum cleaner capable of obtaining sufficient cleaning efficiency.

[0007]

SUMMARY OF THE INVENTION The present invention provides a cleaner body having a built-in electric blower, a flexible hose connected to the cleaner body, and an extension pipe selectively connected to the hose. And a floor suction tool connected to the extension pipe,
A return channel for recirculating the exhaust air from the electric blower to the floor suction device; and forming a guide portion for guiding the exhaust gas from the return channel to the suction side of the extension pipe in the floor suction device. The discharge port of the road is brought close to the surface to be cleaned.

The present invention also provides a cleaner main body having a built-in electric blower, a flexible hose connected to the cleaner main body, an extension pipe selectively connected to the hose, and an extension. A floor suction device connected to a pipe, and a return flow path for recirculating exhaust air from the electric blower to the floor suction device, wherein the floor suction device discharges exhaust gas from the return flow passage to the suction side of the extension pipe. A guide portion for guiding is formed, and a guide port for taking in outside air is formed so as to communicate with an annular flow path of the floor suction tool.

It is desirable that the discharge port and the guide port of the return channel in the floor suction tool are formed at both ends in the longitudinal direction of the floor suction tool.

[0010] Further, the present invention provides a cleaner main body having a built-in electric blower, a flexible hose connected to the cleaner main body, an extension pipe selectively connected to the hose, and an extension pipe. A floor suction device connected to a pipe, a rotating brush rotatably housed in the floor suction device, and a return flow path for recirculating the exhaust air of the electric blower to the floor suction device; The suction tool has a guide portion for guiding exhaust gas from the return passage toward the rotary brush, and a guide port for taking in outside air is formed in communication with the return flow passage of the floor suction tool. .

It is preferable that the discharge port and the guide port of the return channel in the floor suction tool are formed at positions corresponding to both ends of the rotary brush.

[0012] It is preferable that a discharge port of the return channel in the floor suction tool is formed on the front side of the floor suction tool.

[0013] Further, the discharge port and the guide port of the return channel in the floor suction tool may be formed on the front side of the floor suction tool body.

Further, a guide member may be provided in the floor suction tool for guiding the exhaust gas from the return passage toward the guide portion.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

Reference numeral 1 denotes a cleaner main body, a main body case 2, a cover 16 (described later) attached to the outer bottom of the main body case 2 to form an exhaust passage 17 between the main body case 2, and a front part of the main body case 2. And a front cover 18 (described later) to be attached. The front cover 18 has an intake port 3 on a front wall of the main body case 2, and the paper pack 4 is communicated with the intake port 3 from the front of the main body case 2. , An electric blower room 7 containing an electric blower 6, and a code reel room 9 containing a code reel 8.

The electric blower 6 is covered with a motor cover 10. The motor cover 10 has a first opening 11 at a position corresponding to the blower of the electric blower 6, and corresponds to a motor of the electric blower 6. A second opening 12 is formed at the position. 13 is a filter arranged in the second opening 12,
After a part of the exhaust of the electric blower 6 passes through the motor,
Air is discharged from the shaft portion of the wheel 14 disposed on the side of the main body case 2 via the filter 13.

Reference numeral 15 denotes a first motor case 10 for covering the electric blower 6 on the bottom of the electric blower storage chamber 7 of the main body case 2.
At a return port formed corresponding to the opening 11, a part of the exhaust air from the electric blower 6 is guided to an exhaust passage 17 described later via the return port 15.

Reference numeral 16 denotes a cover attached to the outer bottom surface of the main body case 2, and an exhaust passage 17 through which the exhaust of the electric blower 6 passes is formed between the cover 16 and the bottom surface of the main body case 2.

Reference numeral 18 denotes a front cover which is attached to a front portion of the main body case 2 and forms an exhaust space 19 between the main body case 2 and a hose connection into which a first connection member 27 of a hose 24 described later is inserted. A tube portion 20 is formed, and an opening of the hose connection tube portion 20 matches the intake port 3 of the main body case 2. Reference numeral 21 denotes a communication port formed in a part of the hose connection tube portion 20 and communicating the exhaust space 19 with the inside of the hose connection tube portion 20.

Reference numeral 22 denotes a partition wall formed at the lower part of the front wall of the main body case 2 toward the front.
And a communication hole 23 formed in the partition wall 22.
Thereby, the exhaust passage 17 and the exhaust space 19 communicate with each other.

A hose 24 is detachably connected at one end to the cleaner main body 1. The hose 24 is formed by a flexible small inner hose 25 and a larger outer hose 26 than the inner hose 25. The inner hose 25 has an intake path, the inner hose 25 has an exhaust path between the outer hose 26, and the outer hose 26 has a conductive and shape-retaining coil wire. I have.

In the above-mentioned hose 24, the inner hose 25 has a coil wire or the like installed therein.
Even when stepping on, the deformation of the inner hose 25 is restored, so if the outer hose 26 is not deformed, the inner hose 25 will not be deformed, so dust will not clog in the inner hose 25, In addition, if the outer hose 26 is deformed, it can be recognized that the inner hose 25 is also crushed, so that inconvenience such as clogging of dust without noticing the abnormality of the inner hose 25 is prevented.

In the present embodiment, the hose 24 is made of a colored resin for the inner hose 25, and the outer hose 26 is made of a translucent resin.

Reference numeral 27 denotes a first connecting member provided at one end of the hose 24, and an inner member 28 to which the inner hose 25 is connected.
And the outer member 29 to which the outer hose 26 is connected.After the inner hose 25 is mounted on the inner member 28, the outer hose 26 is mounted and fixed on the outer member 29. I have.

The first connecting member 27 has an inner member 28
29, the first connecting member
When the inner member 28 is connected to the air inlet 3 of the main body case 2 when the hose 27 is connected to the hose connecting tube 20 formed on the front cover 18 of the cleaner body 1, the hose connecting tube 20 The communication port 21 formed in the exhaust space 19 is opposed to the inner member 28 projecting from the outer member 29.
From the first connection member 27 through the communication port 21
The liquid flows between the outer member 28 and the outer member 29.

Reference numeral 30 denotes a second connecting member provided at the other end of the hose 24. Like the first connecting member 27, an inner member 31 to which the inner hose 25 is connected and a second connecting member 30 are provided. And an external member 32 to be connected.

Reference numeral 33 denotes a handle tube integrally formed with a grip portion 34 on the upper surface. The second connection member 30 to which the hose 24 is connected is rotatably and electrically connected to the handle tube 33.
The handle tube 33 includes an inner cylindrical portion 35 having a substantially circular cross-section serving as an air intake passage corresponding to the inner member 31 of the second connection member 30, and a lower side of the inner cylindrical portion 35 (opposite to the grip portion 34). And an outer cylindrical portion 36 which is formed so as to cover the second side of the second connection member 30 and communicates with the outer member 32 of the second connection member 30 to serve as an exhaust passage.

Reference numeral 37 denotes a clamp built in the handle tube 33 so as to be swingable. The clamp 37 exposes a pressing portion 38 formed at one end to the upper surface of the handle tube 33, and a hook 39 formed at the other end to the inside. The inner cylindrical portion 35 is configured to freely come and go through an opening (not shown) formed in the cylindrical portion 35.

Reference numerals 40 and 41 denote first and second extension pipes which are detachably attached to the handle tube 33. The first and second extension pipes each have a substantially circular cross section corresponding to the inner cylindrical portion 35, corresponding to the shape of the handle tube 33. And the exhaust cylinder portions 44, 45 having a substantially crescent cross section formed so as to coincide with the outer cylindrical portion 36 and cover the lower portion of the intake cylinder portions 42, 43. ing.

The handle is provided between the other end of the first extension pipe 40 (the connection side of the second extension pipe 41) and a cover 40a integrally attached to the outer surface of the intake cylinder 42 side. Tube 3
A clamp 46 similar to the clamp 37 of 3 is provided,
A pressing portion 47 formed at one end is exposed on the upper surface of the cover 40a, and a hook 48 formed at the other end is connected to an intake cylinder portion through an opening 49 formed in the intake cylinder portion 42 of the first extension pipe 40.
It is designed to be able to come and go inside 42.

At one end of each of the first and second extension pipes 40 and 41 (on the side where the handle pipe 33 is connected), there is provided an insertion tube section 50 which is inserted into the other end of the handle pipe 33 and the other end of the first extension pipe 41, respectively. , 51 are formed, and seal packing 52 is disposed on the outer circumference of the insertion cylinders 50, 51 of the intake cylinders 42, 43. Reference numeral 53 denotes an engagement recess formed on the upper surface of the insertion cylinders 50, 51 on the side of the intake cylinders 42, 43, with which the hooks 48 of the clamp 46 engage.

Although the connecting portion between the first extension pipe 40 and the second extension pipe 41 has been illustrated and described in detail here, the connecting portion between the second extension pipe 41 and a connecting pipe 79 of the floor suction tool 54 described later. The description and detailed drawings are omitted.

Numeral 54 denotes a floor suction tool detachably connected to the other end of the second extension pipe 41.
56, and a lid 68 which is detachably engaged with the upper and lower cases 55, 56.
(Described later), the upper and lower cases 55,
A rotating pipe 75 (described later) which is sandwiched by the 56 and is disposed so as to be vertically movable with respect to the suction tool main body 57, and a connecting pipe 79 (described later) which is disposed on the rotating pipe 75 so as to be rotatable in the circumferential direction. It is composed of

Reference numeral 58 denotes a suction port formed on the bottom surface of the suction tool main body 57, and reference numeral 59 denotes a rotating brush storage chamber formed in the suction tool main body 57, with the rotary brush 60 facing the suction port 58. It is rotatably housed in.

The rotating brush 60 includes a core 61 and this core
Consisting of a pair of brush bodies 62 inserted with a base inserted into a spiral groove formed in 61, and a pair of blades 63 also inserted with a base inserted into the spiral groove of the core 61. Have been. The blade 63 is formed into a curved shape using nylon, polyethylene resin, or the like.

Reference numeral 64 denotes a guide portion formed in a substantially horizontal direction at a front portion of the suction port 58 of the lower case 56, and 65 denotes a guide member continuously disposed on a lower member 70 of a lid 68 described later. The lower case 56 is disposed at a distance from a front wall of the lower case 56 and the guide portion 64, and guides exhaust gas from a passage 72 described later toward the guide portion 64. It has become.

The lower end of the guide member 65, which serves as a discharge opening of an annular flow path (a passage 72 described later), faces the guide portion 64.
It is located close to the surface to be cleaned, and discharges exhaust gas from the return flow passage (passage 72) from a position close to the surface to be cleaned, so that dust on the surface to be cleaned is easily entrained, thereby improving cleaning efficiency. I have.

The exhaust colliding with the guide portion 64 is changed in its direction and guided toward the rotary brush 60, and the blade 63 of the rotary brush 60 is cleaned while cleaning a carpet or the like.
In addition, the brush body 62 is prevented from being caught on the carpet to reduce the rotational force.

Reference numeral 66 denotes a shaft supporting portion formed at the rear central portion of the upper and lower cases 55 and 56, which rotatably supports a hollow shaft 78 of a rotating tube 75 described later. 67 is the shaft support 66
The exhaust of the electric blower 6 is guided through a hollow shaft 78 of a rotating pipe 75 described later in an exhaust space formed continuously.

A lid 68 is detachably attached to the upper and lower cases 55 and 56 and constitutes a top surface of the rotary brush storage chamber 59. The lid 68 includes an upper member 69 and a lower member 70.
A pair of bulges 71 are formed near the longitudinal ends of the upper member 69, that is, at positions corresponding to both ends of the rotary brush 60, and project upward over the entire width of the upper member 69 in the lateral direction. Thus, a passage 72 through which the exhaust gas from the exhaust space 67 passes is formed between the bulging portion 71 and the lower member 70, and a front opening of the passage 72 serves as an exhaust outlet.

A number of small holes 73 are formed in a portion of the lower member 70 corresponding to the passages 72, 72 so as to reduce noise caused by the air flow in the rotating brush storage chamber 59.

Reference numeral 74 denotes a guide opening formed in front of the bulging portion 71 corresponding to both end portions of the rotary brush 60, and communicates with the passage 72. It is guided toward the rotating brush 60 through the guide portion 64 together with the exhaust air from the 72, and rotates the rotating brush 60.

Reference numeral 75 denotes a rotating pipe which is disposed so as to be vertically movable with respect to the suction tool main body 57, from one end where a connecting pipe 79 to be described later is connected to the other end which is sandwiched by the suction tool main body 57. While forming a continuous intake pipe portion 76, an exhaust passage 77 is formed on an outer peripheral portion of the intake pipe portion 76 at one end side of the rotary pipe 75 so as to coincide with an exhaust passage 81 of a connection pipe 79 described later. I have.

Reference numeral 78 denotes a hollow shaft formed at the other end of the rotary pipe 75 and communicating with the exhaust passage 77. The hollow shaft 78 is rotated by the shaft supports 66 and 66 of the upper and lower cases 55 and 56. By being rotatably supported, the exhaust passage 77 of the rotating pipe 75 and the exhaust space 67 of the suction tool main body 57 communicate with each other.

A connecting pipe 79 is connected to the rotary pipe 75 so as to be rotatable in the circumferential direction. An intake path 80 communicates with an intake pipe section 76 of the rotary pipe 75, and an outer peripheral portion of the intake path 80. And an exhaust passage 81 formed integrally with the exhaust pipe portion 45 of the second extension pipe 41.
And a cover member 82 constituting a part of the exhaust path 81.

The exhaust passage 81 of the connecting pipe 79 has a crescent-shaped cross section on the second extension pipe 41 side corresponding to the exhaust cylinder 45 of the second extension pipe 41.
On the connecting side of the rotary pipe 75 of 79, it is formed over the entire outer circumference of the intake pipe section 76.

On the second extension pipe 41 side of the connection pipe 79,
An insertion cylinder 84 is formed similarly to the end of the second extension pipe 41 on the side of the first extension pipe 40 and the end of the first extension pipe 40 on the connection side of the handle tube 33. An engagement recess 85 with which the hook of the clamp engages is formed.

Reference numeral 86 denotes a support cover attached to one end of the rotating pipe 75, which is composed of upper and lower support members 87 and 88. The rotatable tube 75 and the connecting tube 79 are rotatably supported by sandwiching a flange portion 89 formed at the bottom.

The rotating tube 75 can be rotated to a position substantially perpendicular to the suction device main body 57, and the connecting tube 79 is moved left and right with respect to the rotating tube 75.
It can be rotated to a position substantially horizontal to the floor surface, by rotating the rotation tube 75 to the vertical and rotating the connection tube 79 to the left or right direction to the substantially horizontal position. The first and second extension pipes 40 and 41 are substantially parallel to the suction tool main body 57, so that the suction tool main body 57 can penetrate into a gap of furniture or the like to be cleaned.

Thus, in this embodiment, when the electric blower 6 is driven, the air sucked from the suction port 58 and the guide port 74 of the floor suction tool 54 contains dust while the rotating pipe is being rotated.
75, an intake pipe section 75, an intake path 80 of a connecting pipe 79, intake cylinder sections 42, 43 of the first and second extension pipes 40, 41, and an inner cylindrical section of the handle pipe 33.
35, the inner member 31 of the second connecting member 30 and the inner hose 25, the first
It flows into the dust collection chamber 5 via the inner member 28 of the connecting member 27.

Then, the dust contained in the intake air is
After being filtered at, most of the intake air is discharged from the blower portion of the electric blower 6 as exhaust gas through the first opening 11 of the motor cover 10 and the return port 15 on the bottom of the electric blower storage chamber.
A part of the intake air is exhausted from the shaft part of the wheel 14 through the second opening 12 of the motor cover 10 and the filter 13 from the motor part of the electric blower 6 while being returned to the air blower 17.

Most of the exhaust gas recirculated to the exhaust passage 17 is
A communication hole 23 formed in the partition wall 22 of the main body case 2, an exhaust space 19 between the main body case 2 and the front cover 18, and a communication port 21 formed in the hose connection tube portion 20 of the front cover 18.
Flows between the inner member 28 and the outer member 29 of the first connecting member 27 via the.

The inner hose 25 and the outer hose connected to the inner member 28 and the outer member 29 of the first connecting member 27, respectively.
After passing through the exhaust path formed between the second connecting member 30 and the inner member 31 and the outer member 32 of the second connecting member 30, the gas flows into the outer cylindrical portion 36 of the handle tube 33, 1, second extension pipe 4
0, 41, the connecting pipe 7 of the floor suction tool 54 through the exhaust pipe sections 44, 45.
It flows into the exhaust path 81 of 9.

The exhaust gas flowing into the exhaust passage 81 of the connecting pipe 79 is supplied from the exhaust passage 77 of the rotary pipe 75 via the hollow shaft 78 to the suction device main body 57.
Then, it collides with the guide portion 64 through the passage 72 formed in the bulging portion 71 of the lid 68 and blows toward the rotating brush 60 to rotate the rotating brush 60.

At this time, since the outside air also flows in from the guide port 74 of the suction tool main body 57, the air volume increases in addition to the exhaust gas circulated from the passage 72, and the rotational force of the rotary brush 60 is improved. Further, since the guide member 65 is disposed adjacent to the guide portion 64 continuously to the lower member 70 of the lid 68 constituting the passage 72,
The exhaust from the passage 72 and the outside air from the guide port 74 are prevented from diffusing into the rotating brush storage chamber 59, and more reliably guided by the rotating brush 60, so that the rotating force of the rotating brush 60 can be obtained more efficiently. .

The handle pipe 33 and the first extension pipe 40, the first extension pipe 40 and the second extension pipe 41, and the connection section between the second extension pipe 41 and the connection pipe 79 of the floor suction tool 54 are respectively provided. Each of the clamps is provided on the side of the suction passage from the floor suction tool 54 to the cleaner body 1, so that air does not flow out to the atmosphere through the hole that faces the pressing portion of the clamp.
It does not cause user discomfort.

That is, for example, the first extension pipe 40 and the second
Taking the connection portion with the extension pipe 41 as an example, if the pressing portion 47 of the clamp 46 is disposed on the exhaust cylinder portion 44 side, the exhaust cylinder portion is opened via the opening 49 facing the hook 48 of the clamp 46. Exhaust gas flowing through 44 leaks outside the first extension pipe 40,
Although the user may feel uncomfortable, as in the present embodiment, the clamp 46 is moved from the floor suction tool 54 to the cleaner main body 1.
Is arranged on the side of the intake cylinder portion 42 which is the intake passage side to the air blower, the intake air in the intake cylinder portion 42 which is sucked by the electric blower 6 and flows through the opening 49 facing the hook 48 of the clamp 46. Therefore, the outside air flows in the direction of being drawn into the intake cylinder portion 42, so that air leakage from the first extension pipe 40 can be prevented, and the user does not feel uncomfortable.

According to the above configuration, the exhaust air from the electric blower 6 is circulated to the floor suction device 54 to reduce the exhaust air from the vacuum cleaner, and the rotating brush 60 is used by utilizing the exhaust air.
, And a sanitary vacuum cleaner with high cleaning efficiency can be obtained.

Further, the exhaust gas circulated from the electric blower 6 to the floor suction device 54 is guided by the guide portion 64 of the suction device main body 57 to change its direction toward the rotating brush 60, and is thus directed toward the floor surface. Exhaust air does not blow, and when the floor suction tool 54 is lifted during cleaning, it is possible to prevent the dust on the surface to be cleaned from being diffused by the exhaust air.

Further, together with the recirculated exhaust gas, a guide port 74 is provided.
When the outside air flows in from above, the rotating force of the rotating brush 60 can be sufficiently obtained, and the cleaning efficiency can be improved.

Since the passage 72 and the guide opening 74 of the lid 68 are formed at positions corresponding to both ends of the rotary brush 60, the exhaust gas flowing into the passage 72 and the outside air from the guide opening 74 are guided by the guide portion.
It is mainly sprayed on both ends of the rotating brush 60 via the 64.

The suction force of the vacuum cleaner corresponds to the suction pipe 76 of the rotary pipe 75 connected to the rear center of the suction tool main body 57, and is strongest at the center of the suction port 58. Since the exhaust air and the outside air are blown to both ends of the rotating brush 60 as described above, dust at both ends of the rotating brush 60 having a weak suction force as compared with the center of the suction port 58 can be surely scraped up.

The guide port 74 and the passage 72 are assumed to be rotating brushes.
In the case where it is formed over the entire width of 60, the guide port 74
The wind speed of the outside air taken in from the air and the exhaust air from the passage 72 decreases, and the rotational force of the rotating brush 60 cannot be obtained efficiently. However, as in this embodiment, the guide port 74 and the passage 72 are connected to both ends of the rotating brush 60. By forming them corresponding to the parts, the air is guided to the rotating brush 60 without lowering the wind speed of the outside air, and the rotating force can be efficiently obtained, and the cleaning efficiency can be further improved.

Since the discharge port of the passage 72 is formed in front of the floor suction tool 54 (ie, in front of the rotary brush storage chamber 59), exhaust gas flowing forward from the rear side of the floor suction tool 54 is prevented. Thus, the rotating brush storage chamber 59 can be guided from the front to the back by smoothly turning downward, so that the wind speed can be prevented from lowering and the deep suction force can be improved. In addition, guideway
74 is also formed in front of the floor suction tool 54 so as to communicate with the passage 72, so that the air volume can be increased and the deep suction force can be further improved.

A guide member 65 is provided at the discharge port of the passage 72, and the discharge opening of the exhaust from the passage 72 is close to the surface to be cleaned.
Spray on the 64 to prevent the wind speed from decreasing
A rotation torque of 60 can be obtained, and dust on the surface to be cleaned can be drawn in to improve suction performance.

[0067]

According to the first aspect of the present invention, the exhaust from the electric blower is recirculated to the floor suction device to reduce the exhaust of the vacuum cleaner, thereby obtaining a sanitary and efficient vacuum cleaner. Can be.

Further, since the discharge port of the return flow path is close to the surface to be cleaned, dust on the surface to be cleaned can be drawn in and the suction performance can be improved.

According to the second aspect of the present invention, the exhaust air from the electric blower is circulated to the floor suction device so that the exhaust air from the vacuum cleaner is reduced, and a sanitary vacuum cleaner with high cleaning efficiency can be obtained. .

Further, by taking in outside air from the guide port communicating with the return channel, the air volume can be increased, the deep suction force on the surface to be cleaned can be improved, and the cleaning efficiency can be improved.

Furthermore, since the exhaust gas which has flowed back to the floor suction tool is guided by the guide portion of the floor suction tool to change its direction toward the suction side of the extension pipe, the exhaust gas is blown toward the floor surface. Therefore, when the floor suction tool is lifted during cleaning, it is possible to prevent the dust on the surface to be cleaned from being diffused by the exhaust air.

According to the third aspect of the present invention, since the discharge port and the guide port of the return channel of the floor suction tool are formed at both longitudinal ends of the suction tool body, the exhaust port and the guide port of the return channel are provided. The outside air is blown mainly to the portion having a weak suction force, so that the cleaning efficiency can be further improved.

According to the fourth aspect of the present invention, the exhaust from the electric blower is circulated to the floor suction device to reduce the exhaust of the vacuum cleaner, thereby obtaining a sanitary vacuum cleaner with high cleaning efficiency. .

A rotary brush is provided in the floor suction tool,
By obtaining and rotating the rotating torque of the rotating brush using the exhaust from the return channel, the cleaning efficiency of the surface to be cleaned can be improved, and in addition to the exhaust that has been recirculated,
By taking in outside air from the guide port communicating with the return channel, the air volume can be increased and the deep suction force on the surface to be cleaned can be improved,
Cleaning efficiency can be improved.

Further, the exhaust gas circulated to the floor suction device is guided by the guide portion of the floor suction device to change its direction toward the rotating brush, so that the exhaust gas does not blow toward the floor surface. When the floor suction tool is lifted during cleaning, it is possible to prevent the dust on the surface to be cleaned from being diffused by the exhaust air.

According to the fifth aspect of the present invention, since the discharge port and the guide port of the return channel of the floor suction tool are formed at positions corresponding to both ends of the rotary brush, the exhaust port and the guide port of the return channel are provided. The outside air is blown mainly to both ends of the rotary brush having a weak suction force, so that the cleaning efficiency can be further improved.

According to the sixth aspect of the present invention, since the discharge port of the return channel is formed on the front side of the floor suction tool, the exhaust gas circulating from the extension pipe side can be smoothly circulated to prevent a reduction in wind speed. By guiding the outside air, the air volume can be improved, and the deep suction tool can be improved to improve the cleaning efficiency.

According to the seventh aspect of the present invention, since the discharge port and the guide port of the return channel are formed on the front side of the floor suction tool, the exhaust gas flowing from the extension pipe side is smoothly circulated to reduce the wind speed. In addition to improving the cleaning efficiency, it is possible to improve the flow rate by guiding outside air and improve the deep suction tool.

According to the eighth aspect of the present invention, the guide member rectifies the exhaust gas from the return passage and blows the exhaust gas to the guide portion, thereby preventing a decrease in wind speed and obtaining the rotational torque of the rotary brush more efficiently. .

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a vacuum cleaner main body and a flexible hose of a vacuum cleaner according to the present invention.

FIG. 2 is a cross-sectional view of the flexible hose from a handle tube to a floor suction tool.

FIG. 3 is a top view of the floor suction tool.

FIG. 4 is a side view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a top view in a state where an upper case and a lid are removed from the floor suction tool.

FIG. 7 is a sectional view of the floor suction tool.

FIG. 8 is a sectional view taken along the line AA in FIG. 3;

FIG. 9 is a front view of the rotation pipe and the connection pipe.

FIG. 10 is a side view of the same.

FIG. 11 is a view simultaneously showing a rear surface of the rotating pipe and the connecting pipe connected to each other and a rear face of the rotating pipe.

FIG. 12 is a sectional view of the rotating pipe and the connecting pipe.

FIG. 13 is a sectional view taken along the line BB in FIG.

FIG. 14 is a sectional view taken along the line CC in FIG. 12;

FIG. 15 is a sectional view taken along a line DD in FIG. 12 and is a view in which a rotary tube is removed.

FIG. 16 is a top view of the connection pipe.

FIG. 17 is a bottom view of the connection pipe.

FIG. 18 is a cross-sectional view of a connection portion between the first extension pipe and the second extension pipe.

FIG. 19 is a sectional view taken along the line EE in FIG. 18;

[Explanation of symbols]

 1 Vacuum cleaner body 24 Hose 25 Inner hose 26 Outer hose 40 First extension pipe 41 Second extension pipe 42 Intake cylinder 43 Intake cylinder 44 Exhaust cylinder (circular passage) 45 Exhaust cylinder (circular passage) 54 Floor suction Tool 60 Rotating brush 64 Guide part 65 Guide member 67 Exhaust space (circular flow path) 72 Passageway (circular flow path) 74 Guide port 75 Rotating pipe 76 Intake pipe part 77 Exhaust flow path (circular flow path) 78 Hollow shaft (circular flow path) 79 Connecting pipe 80 Intake path 81 Exhaust path (circular path)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Rizo Kobayashi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshiyuki Fujiyoshi 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Yoshihiro Mori 2-5-5 Sanyo Electric Co., Ltd. (72) Inventor Takahiro Nishiyama Keihanhondori Moriguchi, Osaka 2-5-5 Sanyo Electric Co., Ltd. F-term (reference) 3B061 AH02

Claims (8)

[Claims] 1. A cleaner main body having a built-in electric blower, a flexible hose connected to the cleaner main body, an extension pipe selectively connected to the hose, and an extension pipe connected to the extension pipe. A floor suction device, and a return passage for recirculating the exhaust air from the electric blower to the floor suction device. The guide portion guides the exhaust gas from the return flow passage to the suction side of the extension pipe. And forming the discharge port of the annular flow path,
An electric vacuum cleaner characterized by being brought close to a surface to be cleaned. 2. A cleaner body having a built-in electric blower, a flexible hose connected to the cleaner body, an extension pipe selectively connected to the hose, and an extension pipe connected to the extension pipe. A floor suction device, and a return passage for recirculating the exhaust air of the electric blower to the floor suction device. The guide portion guides the exhaust gas from the return flow passage to the suction side of the extension pipe in the floor suction device. And a guide port for taking in outside air which is communicated with an annular flow path of the floor suction tool. 3. The electric device according to claim 1, wherein the discharge port and the guide port of the return channel of the floor suction tool are formed at both ends in the longitudinal direction of the floor suction tool. Vacuum cleaner. 4. A cleaner main body having a built-in electric blower, a flexible hose connected to the cleaner main body, an extension pipe selectively connected to the hose, and an extension pipe connected to the extension pipe. A floor suction tool, a rotary brush rotatably housed in the floor suction tool, and a return channel for recirculating the exhaust air from the electric blower to the floor suction tool. A vacuum cleaner, wherein a guide portion for guiding exhaust air from the return channel toward the rotating brush is formed, and a guide port for taking in outside air is formed in communication with the return channel of the floor suction tool. 5. The vacuum cleaner according to claim 4, wherein the discharge port and the guide port of the return channel in the floor suction tool are formed at positions corresponding to both ends of the rotary brush. 6. The vacuum cleaner according to claim 1, wherein a discharge port of a return channel in the floor suction tool is formed on a front side of the floor suction tool. 7. The vacuum cleaner according to claim 1, wherein a discharge port and a guide port of an annular flow path in the floor suction tool are formed on a front side of the floor suction tool main body. 8. The vacuum cleaner according to claim 1, further comprising a guide member for guiding the exhaust gas from the return passage toward the guide portion in the floor suction tool.