JP2001198057A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of preventing refluxed exhaust from leaking to the outside of a main body case by simple constitution. SOLUTION: In this vacuum cleaner for refluxing the exhaust from a motor- driven blower 6 through a hose 24 to a suction tool 54 for a floor, the reflux path of a cleaner main body 1 is constituted by integrally forming an exhaust guide 100 whose one end is connected to a communication port 23 communicated to the reflux path formed at the hose 24 and other end is connected to a motor cover 10 surrounding the motor-driven blower 6 by blow molding.

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 incorporated in a cleaner body is returned to a floor suction tool through a hose or a pipe. .

[0002]

2. Description of the Related Art The present applicant rotates exhaust air from an electric blower built in a cleaner body through an exhaust passage formed by a combination of a plurality of parts such as a cover disposed at a lower portion of a main body case. A recirculation path for returning to the floor suction device having a brush is formed, and the exhaust is guided to the rotary brush in the floor suction device, so that the dust on the surface to be cleaned is lifted and sucked while rotating the rotary brush. The proposed vacuum cleaner was proposed in Japanese Patent Application No. 11-163986.

[0003] However, since the air pressure of the exhaust gas flowing through the exhaust passage is higher than the atmospheric pressure, the exhaust gas leaks out of the cleaner main body from a gap between components constituting the exhaust passage such as a cover, and the leaked wind causes floor leakage. There is a drawback that the dust on the surface and carpet rises and spreads and becomes unsanitary,
There is a disadvantage that the amount of exhaust gas guided by the rotating brush is reduced, the rotating force of the rotating brush is insufficient, and the cleaning efficiency is reduced.

In order to solve the above problem, it is conceivable to provide a sealing means such as a packing on a component constituting an exhaust passage such as a cover to prevent the leakage of exhaust gas. However, it is necessary to mount the sealing means. In addition, assembling operability is reduced, and the size of components constituting the exhaust passage, such as the cover, changes due to aging and the like, and a gap may be formed in the exhaust passage, and exhaust may leak.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a vacuum cleaner having a simple structure and capable of preventing exhaust gas to be recirculated from leaking out of a main body case. And

[0006]

A first means of the present invention is as follows.
A cleaner main body containing an electric blower, a flexible hose connected to the cleaner main body, an extension pipe selectively connected to the hose, and a floor suction tool connected to the extension pipe; A return path for returning the exhaust air of the electric blower to the floor suction tool, wherein the return path of the cleaner body is connected to a communication port having one end communicating with the return path formed in the hose, and An exhaust guide whose end is connected to a motor cover surrounding the electric blower is integrally formed in a tubular shape by blow molding.

In the first means of the present invention, it is preferable that the exhaust guide has flexibility.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below in detail with reference to FIGS.

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, and a front cover 18 attached to a front portion of the main body case 2.
(Described later), and has a suction port 3 on the front wall of the main body case 2, and also has a paper pack 4 built in from the front of the main body case 2 in communication with the suction port 3. A chamber 5, an electric blower storage chamber 7 for housing the electric blower 6, and a code reel chamber 9 containing a code reel 8 are sequentially provided.

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 the electric 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 cover 10 for covering the electric blower 6 on the bottom of the electric blower storage chamber 7 of the main body case 2.
This is a return port formed corresponding to the opening 11.

Reference numeral 100 denotes an exhaust guide formed into a thin cylindrical shape by blow molding. One of the exhaust guides has a first opening 101 formed to have a larger diameter than the return port 15 and the other has a communication port 23 described later. It has a second opening 102 (two locations in the present embodiment) formed with a larger diameter. 103 denotes a first opening formed near the first opening 101 of the exhaust guide 100.
The fitting portion has a smaller diameter than the return port 15. Ten
Reference numeral 4 denotes a second fitting portion formed near the second opening 102 of the exhaust guide 100, and has a smaller diameter than a communication port 23 described later.

By fitting the first fitting portion 103 to the return port 15 and fitting the second fitting portion 104 to the communication port 23, the exhaust air from the electric blower 6 is exhausted from the return port 15 to the exhaust guide. It is configured to be discharged to the communication port 23 through 100.

The exhaust guide 100 is formed to be thin by blow molding and has flexibility, so that the first opening 101 and the second opening 102 are deformed inward, and the return opening 15 is formed.
And the first fitting portion 103 and the second fitting portion 1
The work of fitting the 04 into the return port 15 and the communication port 23 can be easily performed, and the assembling workability can be improved.

Further, the first opening 101 and the second opening 102 deformed inward expand outward due to the restoring force and return to the original state, so that the exhaust guide 100 comes off from the return port 15 and the communication port 23. This prevents the return port 15 and the communication port 23 from being sealed. A cover 16 covers the exhaust guide 100 and is attached to the outer 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 with the main body case 2. 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 reference numeral 23 denotes a communication hole formed in the partition wall 22.
It communicates with 9.

A hose 24 is detachably connected at one end to the cleaner main body 1. The hose 24 is formed by a flexible inner hose 25 having a small diameter and an outer hose 26 having a larger diameter than the inner hose 25. The inside hose 25 is an intake passage, and the space between the inner hose 25 and the outer hose 26 which communicates with the exhaust space 19 via the communication port 21 is an exhaust passage. The outer hose 26 is provided with a coil wire having conductivity and shape retention.

In the above-mentioned hose 24, the inner hose 25 has no coil wire or the like, and the user may mistakenly
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 30 denotes a connecting member provided at the other end of the hose 24, and an inner member 31 to which the inner hose 25 is connected;
And an outer member 32 to which the outer hose 26 is connected.

Reference numeral 33 denotes a handle tube integrally formed with a grip portion 34 on the upper surface. The 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 intake path coinciding with the inner member 31 of the connection member 30, and the inner cylindrical portion 35.
And an outer cylindrical portion 36 which is formed so as to cover the lower side (opposite side of the grip portion 34) 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 which is 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 other end of the first extension pipe 40 (the connection side of the second extension pipe 41) is provided between the handle and the 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 to which 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 tube 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) and 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 arranged 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 a return passage (a passage 72 described later), faces the guide portion 64.
It is located close to the surface to be cleaned, and discharges exhaust air from the return path (passage 72) from a position close to the surface to be cleaned, so that dust on the surface to be cleaned is easily entrained and cleaning efficiency can be improved. 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.

Reference numeral 68 denotes a lid which 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 comprises 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 between the passages 72, 72 so as to reduce noise caused by an air flow in the rotating brush storage chamber 59.

Reference numeral 74 denotes a guide port formed in front of the bulging portion 71 corresponding to both end portions of the rotary brush 60, and communicates with the passage 72 so that the outside air taken in from the guide port 74 is
Along with the exhaust from the passage 72, the guide is guided toward the rotating brush 60 via the guide portion 64, and the rotating brush 60 is rotated.

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 connection pipe 79 described later is connected to the other end side which is held 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.

Reference numeral 79 denotes a connection pipe which is rotatably connected to the rotary pipe 75 in the circumferential direction. The intake pipe 80 communicates with the intake pipe section 76 of the rotary pipe 75, and the 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.

On the side of the second extension pipe 41, the exhaust passage 81 of the connection pipe 79 has a crescent cross section corresponding to the exhaust cylinder 45 of the second extension pipe 41.
Is formed over the entire circumference of the intake pipe 76 on the connection side of the rotary pipe 75.

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 is formed in which the hook 48 of the clamp 46 engages.

Reference numeral 86 denotes a support cover attached to one end of the rotary pipe 75. The support cover 86 includes 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 turning tube 75 can be turned to a position substantially perpendicular to the suction tool main body 57, and the connecting tube 79 is moved left and right with respect to the turning 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.

In the present 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 the dust while the rotary pipe is being driven.
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
Most of the intake air is returned from the blower portion of the electric blower 6 to the exhaust guide 100 as exhaust gas through the first opening 11 of the motor cover 10 and the return port 15 on the bottom surface of the electric blower storage chamber. At the same time, a part of the exhaust gas is exhausted from the motor portion of the electric blower 6 through the second opening 12 of the motor cover 10 and the filter 13 through the shaft portion of the wheel 14.

The exhaust gas returned to the exhaust guide 100 flows into a communication hole 23 formed in the partition wall 22 of the main body case 2.
Since the exhaust guide 100 is formed integrally, it prevents the recirculated exhaust gas from leaking from the cleaner body 1 due to exhaust pressure, and the leaked wind causes dust on the floor or carpet to fly up and diffuse, thereby causing inconvenience. Hygiene can be prevented.

The exhaust gas flowing into the communication port 23 is
After passing through an exhaust space formed between the inner hose 25 and the outer hose 26 through a communication port 21 formed in the hose connection tube portion 20 of the front cover 18, Flows into the outer tubular portion 36 of the handle tube 33 through the space between the inner member 31 and the outer member 32 of the connecting member 30 and further to the exhaust tubular portions 44, 45 of the first and second extension pipes 40, 41. Flows into the exhaust path 81 of the connection pipe 79 of the floor suction tool 54 via the air inlet.

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 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 recirculated from the passage 72, and the rotational force of the rotary brush 60 improves. 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,
Exhaust gas from the passage 72 is prevented from diffusing into the rotating brush storage chamber 59, and is more reliably guided by the rotating brush 60, so that the rotating force of the rotating brush 60 can be obtained 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 device 54 are respectively provided. Each of the clamps 46 is provided on the side of the intake passage from the floor suction tool 54 to the cleaner body 1, so that air does not flow out to the atmosphere side through the hole facing the pressing portion of the clamp 46. ,
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, the clamp 46 is moved from the floor suction tool 54 to the cleaner body 1 as in the present embodiment.
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 from the electric blower 6 is returned to the floor suction device 54 to reduce the exhaust of the cleaner, and the rotational torque of the rotary brush 60 can be obtained using the exhaust. It is possible to obtain a sanitary vacuum cleaner with good cleaning efficiency.

The exhaust gas returned from the electric blower 6 to the floor suction device 54 is guided by the guide portion 54 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 does not blow, and when the floor suction tool 54 is lifted during cleaning, it is possible to prevent the exhaust from diffusing dust on the surface to be cleaned.

Further, since the outside air flows from the guide port 74 together with the recirculated exhaust gas, 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 rotating brush 60, the exhaust gas flowing back to 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 is the strongest at the center of the suction port 58, corresponding to the suction pipe 76 of the rotary pipe 75 connected to the rear center of the suction tool main body 57. Since the exhaust gas is blown to both ends of the rotary brush 60 as described above, dust at both ends of the rotary brush 60, which has a lower suction force than the central portion of the suction port 58, can be reliably 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
Although the air volume of the outside air taken in from the air and the exhaust air from the passage 72 decreases, the rotational force of the rotating brush 60 cannot be obtained efficiently. However, as in the present embodiment, the guide port 74 and the passage 72 By forming corresponding to the part,
The air is guided to the rotating brush 60 without lowering the wind speed of the outside air, so that the rotating force can be obtained efficiently 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.

Furthermore, since the guide port 74 is also formed so as to communicate with the passage 72 in front of the floor suction tool 54, 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. Since the discharge opening of the exhaust gas from the passage 72 is close to the surface to be cleaned, the exhaust gas from the passage 72 is rectified and is guided.
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 trapped to improve suction performance.

FIG. 21 shows a second embodiment.

In the first embodiment, the integrally formed exhaust guide 100 is connected to the first opening 11 provided at a position corresponding to the return port 15 of the motor cover 10 covering the electric blower 6. Although the recirculated exhaust gas is reliably prevented from leaking from the cleaner body 1, the exhaust guide portion 105 in which the motor cover 10 and the exhaust guide 100 are integrally formed is provided, and the cover 16 is omitted.

With this configuration, it is possible to more reliably prevent the recirculated exhaust gas from leaking from the cleaner main body 1, and to simplify the configuration to improve the assembly workability.

[0065]

According to the first aspect of the present invention,
The return path of the cleaner body has one end connected to a communication port communicating with the return path formed in the hose, and the other end connected to a motor cover surrounding the electric blower by a blow molding cylinder. Integrally configured to prevent leakage of recirculated exhaust from the cleaner body, and the leaked wind causes dust on the floor or carpet to fly and spread, resulting in unsanitary conditions. And the like.

According to the structure of the second aspect of the present invention, by providing the exhaust guide with flexibility, the workability of mounting the exhaust guide can be improved, and the sealing property of the connecting portion of the exhaust guide can be improved. It has effects such as being able to be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a cleaner main body according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the exhaust guide.

FIG. 3 is a cross-sectional view of the flexible hose from a handle tube to a floor suction tool.

FIG. 4 is a top view of the floor suction tool.

FIG. 5 is a side view of the same.

FIG. 6 is a front view of the same.

FIG. 7 is a top view of the floor suction tool with the upper case and lid removed.

FIG. 8 is a sectional view of the floor suction tool.

FIG. 9 is a sectional view taken along the line AA in FIG. 4;

FIG. 10 is a front view of the rotation pipe and the connection pipe.

FIG. 11 is a side view of the same.

FIG. 12 is a view simultaneously showing a rear surface of a state where the rotary pipe and the connection pipe are connected, and a rear face of the rotary pipe.

FIG. 13 is a sectional view of the rotating pipe and the connecting pipe.

FIG. 14 is a sectional view taken along the line BB in FIG. 13;

FIG. 15 is a sectional view taken along the line CC in FIG.

FIG. 16 is a cross-sectional view taken along the line DD in FIG.

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

FIG. 18 is a bottom view of the connection pipe.

FIG. 19 is a sectional view of a connection portion between the first extension pipe and the second extension pipe.

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

FIG. 21 is a cross-sectional view of a cleaner body according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Vacuum cleaner body 10 Motor cover 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 (return path) 45 Exhaust cylinder (return path) 54 Floor suction tool 60 Rotating brush 64 Guide part 65 Guide member 67 Exhaust space (return path) 72 Passage (return path) 74 Guide port 75 Rotating pipe 76 Intake pipe part 77 Exhaust flow path (return path) 78 Hollow shaft (return) 79) Connection pipe 80 Intake path 81 Exhaust path (recirculation path) 100 Exhaust guide 105 Exhaust guide

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Morita 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Hirotaka Shikano 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. F term (reference) 3B006 BA05 BA06 BA07

Claims (2)

[Claims] 1. A cleaner body containing an electric blower, a flexible hose connected to the cleaner body, an extension pipe selectively connected to the hose, and a floor connected to the extension pipe. And a return path for returning the exhaust air of the electric blower to the floor suction tool. The return path of the cleaner body is connected at one end to a communication port communicating with the return path formed in the hose. An electric vacuum cleaner characterized in that an exhaust guide connected to a motor cover surrounding the electric blower at the other end is integrally formed into a cylindrical shape by blow molding. 2. The vacuum cleaner according to claim 1, wherein the exhaust guide has flexibility.