JPH11178752A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner for simply exchanging a suction port body at the time of utilizing another accessory and at the time of the fault of the suction port body by attaching and detaching the suction port body to a vacuum cleaner main body or a connection pipe, etc. SOLUTION: At the vacuum cleaner, the suction port 26a of an electric blower 26 built in the vacuum cleaner main body 20 and the suction port body 37 are connected through a suction air duct and the exhaust port 26b of the blower 26 and the body 37 are connected by an exhaust air duct. Then at least a part of the suction air duct and the exhaust air duct are respectively formed within flexible suction and exhaust hoses 30 and 31 connected to the vacuum cleaner main body 37 and the two hoses 30 and 31 are separably held together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner in which exhaust air is returned to a suction port without being exhausted to the outside of the cleaner body and circulated.

[0002]

2. Description of the Related Art As a vacuum cleaner of this type, for example, as shown in FIG. 8 (see Japanese Utility Model Publication No. 39-36553), a double pipe in which an intake air passage and an exhaust air passage are formed inside and outside is double. Or a parallel air inlet and exhaust air passage as disclosed in FIG. 9 (see Japanese Patent Application Laid-Open No. 50-97269) and FIG. 10 (see Japanese Patent Application Laid-Open No. 51-95266). There is a tube type.

In the electric vacuum cleaner shown in FIG. 8, reference numeral 1 denotes a main body of the vacuum cleaner, 2 denotes a filter provided in the main body of the vacuum cleaner, 3
Denotes a dust collection chamber formed in the filter 2, and 4 denotes a vacuum cleaner main body 1.
An electric blower, which is provided in the inside and has a suction side communicating with the dust collecting chamber 3, 5 is provided in the cleaner main body 1, a suction side connection port communicating with the dust collecting chamber 3, 6 is provided in the cleaner main body 1, and An exhaust-side connection port that communicates with the exhaust side of the vacuum cleaner 1. A suction port 7 is connected to the cleaner body 1 via a connection pipe 8 such as a hose or a pipe.

[0004] The suction port 7 has an exhaust air path 9 for blowing exhaust air downward from the front side of the suction port 7a, and a suction air path 10 for sucking dust sucked from the suction port 7a.
Having. The connection pipe 8 is formed of an inner pipe 8a and an outer pipe 8b, and is formed as an inner and outer double pipe. The suction air passage 11 in the inner pipe 8a is communicated with the suction side connection port 5 and the suction air path 10, and the inner pipe 8a An exhaust air passage 12 between the outer pipe 8 b and the exhaust air connection port 6 communicates with the exhaust air passage 9.

[0005] In such a vacuum cleaner, dust sucked together with air from the suction port 7a is sucked into the dust collecting chamber 3 through the suction air passages 10 and 11, and collected by the filter 2. I have. On the other hand, at this time, the air cleaned by the filter 2 is guided to the exhaust air passage 9 via the electric blower 4 and the exhaust air passage 12, and is blown out from the exhaust air passage 9 downward of the suction port 7a. Suction port 7 for dust on cleaning surface 13
The dust is blown to the side a, and the blown dust is sucked into the suction air passage 10 and circulated again.

In the vacuum cleaner of the parallel tube type shown in FIGS. 9 and 10, when the electric blower 15 in the cleaner main body 14 is operated, the suction negative pressure of the electric blower 15 causes the dust collection chamber of the cleaner main body 14 to operate. It acts on the suction port 18 via the suction pipe 16 and the suction pipe 17, so that dust is sucked from the suction port 18 together with air. The dust sucked into the suction port body 18 is sucked into the dust collection chamber 16 via the suction pipe 17 and collected by the filter 19. After the air cleaned by the filter 19 is exhausted from the electric blower 15 to the exhaust chamber 20 at the rear, the air is guided through the exhaust pipe 21 into the suction port body 18 to remove dust on the cleaning surface 22. 1
By being blown up into the inside 8 and being sucked, it is circulated (recirculated) again.

[0007]

By the way, in the electric vacuum cleaner shown in FIG.
1 and the exhaust air path 12 are provided.
2 cannot be separated from the suction air passage 11 and used to blow (blow off) dust on the cleaning surface.

Further, the vacuum cleaner shown in FIGS. 9 and 10 has a structure in which the suction pipe 17 and the exhaust pipe 21 are provided side by side and integrally provided, so that the exhaust pipe 21 is connected to the suction pipe 17 and the suction pipe. It cannot be used to blow (blow off) dust on the cleaning surface after being separated from the mouth 18.

Further, in the structure in which the suction pipe 17 and the exhaust pipe 21 are held side by side, when the suction pipe 17 and the exhaust pipe 21 are formed of flexible suction hoses and exhaust hoses, the pipe 1
Even if the tubes 7 and 21 can be bent in a direction orthogonal to the juxtaposition direction, the tubes 17 and 21 cannot be bent without being crushed in the juxtaposition direction.

Accordingly, a first object of the present invention is to provide a vacuum cleaner in which a flexible exhaust hose can be separated from a suction hose and used for blowing dust.

It is a second object of the present invention to provide a vacuum cleaner which can freely bend in any direction even if a suction hose and an exhaust hose are juxtaposed.

[0012]

Means for Solving the Problems In order to achieve the first object, according to the first aspect of the present invention, the suction side of the electric blower built in the main body of the cleaner is connected to the suction opening through a suction air passage. In an electric vacuum cleaner in which an exhaust side of the electric blower and the suction port body are connected by an exhaust air path, a flexible body in which at least a part of the suction air path and the exhaust air path are connected to the cleaner body. The vacuum cleaner is formed in each of a suction hose and an exhaust hose, and the two hoses are separably held in parallel.

[0013] In order to achieve the above-mentioned second object, a second aspect of the present invention is characterized in that the two hoses are wound while being helically twisted with each other.

Further, the invention according to claim 3 is characterized in that the two hoses are detachably connected at their distal ends by a connecting member.

[0015]

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

In FIG. 6, reference numeral 20 denotes a vacuum cleaner main body of the vacuum cleaner, 21 denotes a dust collecting chamber formed in the front portion of the vacuum cleaner main body 20, and 22 denotes a lid (dust collecting chamber) for opening and closing the dust collecting chamber 21. An opening / closing lid), 23 is a hose connection port formed in the lid 22;
Denotes a paper pack filter (dust collection filter) provided in the dust collection chamber 21.

Reference numeral 25 denotes a fan chamber formed at the rear of the cleaner body 20, and reference numeral 26 denotes an electric blower provided in the fan chamber 25. A suction port (suction side) 26 a of the electric blower 26 is communicated with the dust collection chamber 21. Also,
The rear part of the fan chamber 25 is an exhaust chamber 27 partitioned from the dust collection chamber 21, and the exhaust chamber 27 has an electric blower 26.
Exhaust port (exhaust side) 26b is open. In addition, an exhaust passage (exhaust air passage) 28 communicating with the exhaust chamber 27 is formed in the rear upper portion of the cleaner body 20, and an exhaust passage communicating with the exhaust passage 28 and extending to near the hose connection port 23 is formed in the lid 23. (Exhaust air path) 29 is formed. Reference numeral 29a denotes a hose connection port of the exhaust passage 29.

Reference numeral 30 denotes a flexible suction hose (flexible hose) and 31 a flexible exhaust hose (flexible hose). The suction hose 30 includes a bellows-like and extensible hose 30a, a connection pipe 30b provided integrally with a base end (one end) of the hose 30a, and a second end (tip,
It has a connection pipe 30c integrally provided at the (free end). The exhaust hose 31 is a bellows-like extensible hose 31a, a connecting pipe 31b provided integrally with a base end (one end) of the hose 31a, and a connecting pipe 31b integrally provided with the other end (tip, free end) of the hose 31a. It has a provided connection pipe 31c.

The connection pipe 30 of the suction hose 30
b is inserted and connected to the hose connection port 23, and is connected to the dust collection chamber 21.
And a paper pack filter 24 inside. The connection pipe portion 31b of the exhaust hose 31 is connected to the hose connection port 29a and communicates with the exhaust passage 29.

The suction hose 30 and the exhaust hose 31 are spirally wound while being twisted. Moreover, in this state, the connection pipes 30c and 31c of the hoses 30 and 31 are as shown in FIG.
To C-shaped elastic holding portion 32 of coupling member 32 shown in FIG.
a and 32b are removably inserted and fitted to each other and held together. Therefore, in this state, the hoses 30 and 31 cannot be unwound while maintaining the spirally (rope-shaped) wound state without separation.

The connection pipes 33a and 33b projecting from the base end (one end) of the hand connection pipe (hand pipe) 33 are inserted and connected to the connection pipes 30c and 31c. A suction air passage 34 and an exhaust air passage 35 are formed inside and outside the hand connection pipe 33, and the suction air passage 34 has a connection pipe portion 3.
A suction air passage 33a 'in 3a communicates with the exhaust air passage 35, and an exhaust air passage 33b' in the connecting pipe portion 33b communicates with the exhaust air passage 35.

The other end of the hand connection pipe 33 has
A suction port 37 is connected via an extension pipe 36. A suction air passage 38 and an exhaust air passage 39 are formed in the extension pipe 36 so as to be double inside and outside. A suction chamber 40 and an exhaust air passage 41 are formed in the suction opening 37. The exhaust air passage 41 has a front end that opens rearward at the lower end of the suction chamber 40. And
The suction air passage 38 of the extension pipe 36 is communicated (connected) with the suction air passage 34 of the hand connection pipe 33 and the suction chamber 40 of the suction port body 37, and the exhaust air passage 39 of the extension pipe 36 exhausts the hand connection pipe 33. The air passage 35 and the exhaust air passage 41 of the suction port body 37 are communicated (connected).

Next, the operation of the vacuum cleaner having such a configuration will be described.

In such a configuration, when the electric blower 26 is operated, the suction negative pressure of the electric blower 26 causes the dust collection chamber 2 to operate.
1, suction air passage 30d in suction hose 30, hand connection pipe 3
3, the suction air passages 33a 'and 34, and the suction air passage 3 of the extension pipe 36.
It acts on the suction chamber 40 of the suction port body 37 via the member 8 or the like. Thereby, air and dust are sucked into the suction chamber 40.
Then, the dust sucked into the suction chamber 40 together with the air is
The suction air path 38 of the extension pipe 36, the suction air paths 33a 'and 34 of the hand connection pipe 33, and the suction air path 30d in the suction hose 30.
Is guided into the dust collection chamber 21 via the paper bag filter 24.

At this time, the air sucked into the paper pack filter 24 is cleaned by the paper pack filter 24 and drawn into the vacuum cleaner 26 from the suction port 26a, and then exhausted from the exhaust port 26b to the vacuum cleaner 26. The gas is exhausted to the chamber 27.
The exhaust air exhausted into the exhaust chamber 27 is supplied to an exhaust passage 28,
29, exhaust air passage 31d of exhaust hose 31, hand connection pipe 3
After being guided to the exhaust air passage 41 of the suction port body 37 via the exhaust air passages 33b 'and 35 and the exhaust air passage 39 of the extension pipe 36, the exhaust air passage 41 is directed downward and rearward of the suction chamber 40. The dust on the cleaning surface is blown up into the suction chamber 40 and circulated (recirculated).

When the exhaust hose 31 is used to blow (blow off) dust on the cleaning surface, the hand connection pipe 3
Hose 30, 31 from connection pipe part 33a, 33b of 3
The hoses 30 and 31 are easily separated by extracting the connecting pipe portions 30c and 31c of the connecting member 32 and separating the connecting pipe portions 30c and 31c from the C-shaped elastic holding portions 32a and 32b of the connecting member 32. Can be solved. By bringing the connection pipe portion 31c of the exhaust hose 31 close to the cleaning surface in this separated state, dust on the cleaning surface can be blown off by the exhaust air blown out from the connection pipe portion 31c.

In the embodiment described above, an example is shown in which the suction hose 30 and the exhaust hose 31 are spirally held, but the invention is not necessarily limited to this. For example,
As shown in FIG. 7, the suction hose 30 and the exhaust hose 31 are removably connected to each other by a plurality of connecting members 32, and the exhaust hose 31 is used for blowing dust on the cleaning surface. If so, connect the exhaust hose 31 to the suction hose 3
It may be separated from zero.

[0028]

As described above, according to the first aspect of the present invention, the suction side of the electric blower built in the main body of the cleaner is connected to the suction port through the suction air passage, and the exhaust side of the electric blower is provided. And the suction port body is connected by an exhaust air path, wherein at least a part of the suction air path and the exhaust air path are respectively provided in a flexible suction hose and an exhaust hose connected to the cleaner body. Since the two hoses are formed and held so as to be separable in parallel, the flexible exhaust hose can be separated from the suction hose and used for blowing dust.

In the invention of claim 2, the two hoses are wound while being spirally twisted with each other, so that even if the suction hose and the exhaust hose are juxtaposed, they can be freely moved in any direction. Can be bent.

Further, according to the third aspect of the present invention, since the two hoses are configured such that their distal ends are detachably connected by a connecting member, only one of the distal ends of the suction hose and the exhaust hose is connected to the connecting member. , The two hoses can be juxtaposed and held in a state where they are not separated from each other, so that many members for holding both hoses are not required. In addition, by removing the connecting member from the distal ends of the two hoses, the flexible exhaust hose can be easily separated from the suction hose and used for blowing dust.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of an air passage of a vacuum cleaner according to the present invention.

FIG. 2 is an external perspective view of the vacuum cleaner of FIG.

FIG. 3 is a perspective view partially showing the suction hose and the exhaust hose of FIGS. 1 and 2 separated from a hand pipe.

FIG. 4 is an enlarged explanatory view of a hose tip of FIG. 3;

5 is an explanatory view of the connection between the hand pipe and the suction hose and the exhaust hose in FIG. 2, and is a cross-sectional view along the line DD in FIG. 6 (b).

6A is a cross-sectional view taken along line AA and BB in FIG. 5, and FIG. 6B is a cross-sectional view taken along line CC in FIG.

FIG. 7 is an explanatory view showing another example of holding the suction hose and the exhaust hose of the vacuum cleaner according to the present invention.

FIG. 8 is an explanatory view showing an example of a conventional vacuum cleaner.

FIG. 9 is an explanatory view showing another example of a conventional vacuum cleaner.

FIG. 10 is an explanatory view showing still another example of the conventional vacuum cleaner.

[Explanation of symbols]

 20 ... cleaner body 26 ... electric blower 26a ... suction port (suction side) 26b ... exhaust port (exhaust side) 28, 29 ... exhaust air path 30 ... suction hose 30d ··· Suction air passage 31 ··· Exhaust hose 31d ··· Exhaust air passage 32 ···· Connection member 33 ··· Hand connecting pipe 33a '···· Suction air passage 33b' ···· Exhaust air passage 34 and 38 ... Suction air path 35,39 ... Exhaust air path 37 ... Suction port

Claims (3)

[Claims] 1. A suction side of an electric blower built in a cleaner body and a suction port body are connected via a suction air path, and an exhaust side of the electric blower and the suction port body are connected via an exhaust air path. In the electric vacuum cleaner, at least a part of the suction air passage and the exhaust air passage are respectively formed in flexible suction hoses and exhaust hoses connected to the cleaner body, and the two hoses can be separated. An electric vacuum cleaner characterized by being held side by side. 2. The vacuum cleaner according to claim 1, wherein the two hoses are wound while being spirally wound with each other. 3. The vacuum cleaner according to claim 2, wherein the two hoses are detachably connected at a tip end by a connecting member.