JP2000135178A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow exhausted air from an electric blower to improve the mobility and sucking performance of a vacuum cleaner main body. SOLUTION: The cleaner is provided with an air exhaust port 20b exhausting exhaust air from the electric blower 23 to the side of a floor surface at the lower part of the vacuum cleaner main body 20 and an air cushion 32 formed to cover the port 20b and is formed to blow exhaust air to the floor surface to be cleaned through a floor sucking tool 37 by communicating the cushion 32 and the tool 37 through a connecting member 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust system which discharges exhaust pressure from an electric blower from a lower portion of a cleaner main body, uses the exhaust pressure to give a floating force to the cleaner main body, and uses a floor suction tool. The present invention relates to a vacuum cleaner having an operating handle for blowing exhaust air to the floor.

[0002]

2. Description of the Related Art Conventionally, there has been invented a vacuum cleaner in which the levitation force is applied to a main body of a vacuum cleaner by using exhaust pressure or the floor is blown to improve the running property and dust absorbing property. In each case, issues have arisen. FIG. 21 is a sectional view showing a conventional vacuum cleaner disclosed in, for example, JP-A-6-133900. As another example, there is JP-A-58-160557 shown in FIG. The above publications will be described individually below.

Japanese Patent Laid-Open Publication No. Hei 6-133900 (hereinafter referred to as Conventional Technique 1) will be described with reference to FIG. Reference numeral 94 denotes a vacuum cleaner main body, which has a built-in dust collecting chamber 95 and an electric blower 96. Reference numeral 97 denotes an exhaust port formed near the electric blower 96, and 98 denotes a bottom surface 6 of the cleaner main body 1 so as to cover the exhaust port 4.
The skirt 7 is formed with an exhaust port 97 and a skirt 98.
, 101 is an exhaust port formed on the rear surface of the cleaner body 1. F is a floor surface. With such a configuration, the exhaust air from the electric blower 96 directly collides with the floor F, and the vacuum pressure causes the main body 94 to float up from the floor. After that, the exhaust gas passes through the exhaust intermediate port 100 by the skirt 98 and is
1 is discharged out of the cleaner body 94.

As a result, by rotating the electric blower 96, the cleaner body 94 floats above the floor F due to the exhaust pressure, so that the frictional resistance between the floor F and the cleaner body 94 decreases, and the vacuum cleaner The operation of moving the main body 94 is small and the operation becomes easy.

Next, Japanese Unexamined Utility Model Publication No. 58-160557 (hereinafter referred to as prior art 2) will be described with reference to FIG. 91 The exhaust of the electric blower (not shown) is
An air path body to be discharged to the vicinity of the second air inlet 93 and an exhaust port 92 of the air path body 91. D is dust on the floor F.
With such a configuration, the dust D is blown off from the floor surface F by the exhaust gas and is sucked from the intake port 93. As a result, even the dust D stuck to the floor F is surely blown off by the exhaust pressure, so that it is efficiently sucked.

[0006]

The following problems occur in the prior arts 1 and 2 as described above. In the prior art 1, the exhaust power causes the cleaner body to float from the floor, but does not contribute to suction of dust accumulated on the floor into the cleaner body. Further, in the prior art 2, the exhaust improves the suction performance by moving the dust accumulated on the floor surface, but is only discharged into the air from the cleaner body, and is difficult to operate such as moving the cleaner body. Does not contribute at all.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and makes it easy to move using exhaust gas.
Further, the exhaust is caused to collide with the floor surface from the cleaner body to float the cleaner body, and further collided with dust accumulated on the floor surface from the floor suction tool, thereby causing the dust to float from the floor surface. As a result, it is an object of the present invention to obtain a vacuum cleaner in which the exhaust from the electric blower can improve the mobility and suction performance of the cleaner body.

[0008]

SUMMARY OF THE INVENTION A vacuum cleaner according to the present invention includes a floor suction device, a vacuum cleaner body accommodating a dust collecting chamber communicating with the floor suction device, and an electric blower, and the cleaning device includes: An exhaust port for discharging exhaust air from the electric blower to the floor side at a lower portion of the machine body, an air cushion formed so as to cover the exhaust port, and a communication between the air cushion and the floor suction tool through a connecting member. And the exhaust gas is blown onto the cleaning floor via the floor suction tool.

The air cushion is formed in a balloon shape.

Further, the air cushion has a bellows shape.

The air cushion is rotatable.

The air cushion is formed of a breathable material.

[0013] A traveling wheel is provided below the air cushion.

The connecting member has a shape that can be expanded and contracted and bendable, and is configured to be detachable from the floor suction tool.

Also, a temperature sensor for detecting the temperature of the exhaust gas or a pressure sensor for detecting the pressure of the exhaust gas, and an on-off valve for opening and closing the inside and outside of the cleaner body by the temperature or pressure of the exhaust gas detected by the temperature sensor or the pressure sensor. And a body.

Further, the exhaust gas to be delivered to the floor suction tool is set to 30 to 60% of the total exhaust gas amount.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 is an external view of the vacuum cleaner according to Embodiment 1, FIG. 2 is a cross-sectional view when energized, FIG. 3 is a rear view, FIG. 4 is a bottom view, and FIG. In the figure, reference numeral 20 denotes a cleaner main body, which comprises a dust collecting chamber 22 for storing a disposable dust collecting bag 21 at the front, a motor chamber 24 for storing an electric blower 23 at the rear, and an exhaust chamber 25 at the rear.

Reference numeral 20a denotes an operation handle for holding the cleaner main body 20 during cleaning, and a concave portion 26 is provided on the outer bottom surface of the cleaner main body 20, and the concave portion 26 is located below the dust collecting chamber 22. Are formed by a connecting member storage part 27 and an air discharge part 28 provided below the exhaust chamber 25. Reference numeral 29 denotes a communication port formed in the exhaust chamber 25 for communicating with outside air. The communication port 29 is opened on the outer surface of the communication port 29 when exhaust air from the electric blower 23 reaches a predetermined temperature or a predetermined pressure. (Deformed as indicated by the dotted line in the figure) The on-off valve body 30 is attached.

Reference numeral 31 denotes an exhaust port provided on the lower surface of the exhaust chamber 25 and communicates with the exhaust section 28, 32 is housed in the exhaust section 28,
A flexible air cushion formed in a bag shape from a breathable material, and has an inlet 33 and an outlet 34 fixed so as to cover the exhaust port 31. 35 is provided in the vicinity of the outlet 34, and is a flexible material for shutting off the exhaust to prevent the exhaust gas from flowing from the inlet 31 to the outlet 34 in the shortest distance and the bag-shaped air cushion 32 cannot obtain a predetermined bulge. 35A which is a baffle sheet having a property, and which is in close contact with the inner surface of the air cushion 32 due to exhaust pressure so as not to block the outlet 34A.
Are formed in the vicinity of the outlet 34. 36, the air cushion 32 is attached to the exhaust unit 28 when the cleaner body 20 is not used.
This is a fixing plate for storing and fixing to the air cushion 32. The fixing plate is made of a material harder than the air cushion 32 and made of abrasion-resistant material so as to be slippery.

Reference numeral 37 denotes a floor suction tool which is horizontally long and substantially rectangular, and has a suction part 38 on the bottom surface and a soft material covering the periphery of the suction part 38. One end of the bumper 39 is substantially in contact with the floor surface F. And a suction pipe 40 having one end communicating with the suction part 38 and the other end communicating with the dust collection chamber 22. 4
Reference numeral 0a denotes a suction port on the suction portion 38 side of the suction pipe 40. 41 is a front exhaust port 4 provided on the front surface of the suction section 38
This is a communication path connecting the second exhaust port 43 with the rear exhaust port 43 provided on the rear surface. 4
Reference numeral 4 denotes a connecting member made of a flexible and flexible material, one end of which is detachably provided to the communication passage 41 and the other end of which is detachably provided to the outlet 34. The air cushion 32 communicates. The end of the connecting member 44 connected to the communication path 41 is
The electric blower 23 is attached to the front exhaust port 42 so that the exhaust gas mainly flows into the front exhaust port 42 side.

Next, the operation will be described with reference to FIGS. First, as indicated by an arrow accompanying the rotation of the high-speed rotating electric blower 23, the movement of air starts, and the air from the dust collection chamber 22 passes through the electric blower 23 to become high-pressure exhaust and enters the exhaust chamber 25, The air enters the air cushion 32 through the exhaust port 31, inflates the air cushion 32 like a balloon, and moves the cleaner body 20 upward from the floor surface F.

It should be noted that the exhaust speed is controlled by the exhaust port 31
When the air cushion 32 enters the air cushion 32 having a volume larger than the volume of the air cushion 32, the speed is rapidly reduced, and the air cushion 32 is inflated sufficiently. At this time, the baffle sheet 35 is also moved to the outlet 34 side by the exhaust, and the protrusion 35A is
2 to secure a gap between the inner wall and the outlet 34 to prevent the outlet 34 from closing, prevent exhaust air from directly coming out of the outlet 34, and bypass the obstruction sheet 35 toward the outlet 34 through the gap. .

The exhaust gas passes through the connecting member 44 from the outlet 34 and enters the communication passage 41 of the floor suction tool 37. Most of the exhaust collides with the floor F at a substantially right angle by the front exhaust port 42, and the floor F
The upper dust is sowed and forcedly moved together with the dust from the suction part 38 to the suction port 40a. At this time. Exhaust gas from the rear exhaust port 43 also enters the suction port 40a from the suction section 38 together with dust on the floor F. Then, the exhaust gas containing dust and dust that has entered the suction port 40a becomes intake air, moves in the suction pipe 40, enters the dust collection chamber 22, is captured by the dust collection bag 21, and only clean air is supplied to the electric blower. 23 sucks.

When the above operation is repeated, the circulating air becomes high in temperature due to the power consumption of the electric blower 23.
Catches a predetermined temperature and discharges exhaust gas to the outside of the main body 20. As a result, the discharged amount of outside air is supplied to the floor suction device 37.
Is sucked from the gap between the bumper 39 and the floor surface F, which is caused by the deformation of the bumper 39 attached to the bumper 39, to lower the temperature. Further, when the exhaust gas temperature becomes high due to clogging of the dust collecting bag 21 or the like, the opening / closing valve body 30 is similarly opened to prevent outside air from entering through the floor suction tool 37 to prevent the temperature from rising.

When the air cushion 32 is made of a breathable material, a part of the exhaust is discharged from the side surface of the air cushion 32. As a result, a part of the exhaust gas is always discharged to the outside, so that fresh air enters the cleaner body 20 from the suction tool 37 to prevent the temperature from rising. Furthermore, when the inside of the cleaner main body 20 has an abnormally high temperature, the on-off valve body 30 catches the temperature and discharges exhaust gas to the outside of the main body 20.

When the vacuum cleaner is moved, the side surface of the air cushion 32 is soft and freely deformed even in a place having a step, so that the vacuum cleaner is smoothly moved. In addition, the bottom surface of the air cushion 32 is made of a high-hardness, abrasion-resistant material and a slippery fixing plate 36, so that the exhaust portion 32 is protected and easily moved.

The air cushion 32 is provided on the cleaner body 2.
0, and further, as shown in FIG.
Moves to W2 so that the height L of the air cushion 32 is
Is increased, a load is applied to the suction tool 37 side during cleaning, so that the floor surface F and the suction tool 37 are surely in contact with each other, and the dust collection efficiency is improved.

When the electric power is not supplied after use, as shown in FIG. 5, the air cushion 32 is evacuated and deflated, and is fixed to the exhaust portion 28 by the fixing plate 36 and stored.

With the above-described structure, it is possible to easily move the step, to raise the dust by floating the dust from the floor surface, and to improve the suction performance. Further, it is possible to collect the dust at the time of storage and to increase the temperature of the exhaust gas. Can be prevented.

In the above-described embodiment, when the temperature of the exhaust gas becomes high, the exhaust gas is exhausted to the outside of the main body 20 by the on-off valve body 30.
If it is 0 to 60%, an abnormally high temperature can be avoided.

Further, the entire length or a part of the side surface of the air cushion 32 is formed in a bellows shape which expands and contracts in the vertical direction. After use, the air cushion 32 is pushed upward and contracted, and the fixing plate 36 is not fixed to the exhaust portion 28. It may be housed in the exhaust part 28. In addition, a number of discharge holes for discharging exhaust gas are provided in the fixing plate 36,
The exhaust air discharged from the exhaust hole causes the
May be levitated to facilitate movement.

Further, the handle 20a is pushed downward to release the air
When the air outlet 2 is contracted, the exhaust power that is contracted separately from the exhaust from the electric blower 23 is applied to the front exhaust port 42 and the rear exhaust port 43 to improve dust collection performance.

As shown in FIG. 6, the connecting member 44 may be removed and used. In this case, the suction unit 3
8 has a lower pressure than the outside air, so that outside air enters through a connection hole 45 provided in the communication passage 41 and connects the connection member 44, and most of the exhaust is discharged from the front exhaust port 42 and the rear exhaust port 43. The dust collides with the floor F at a substantially right angle from 42, so that the dust on the floor F is sowed up, and is sucked together with the dust from the suction part 38 into the suction port 40a. Outlet 34 of air cushion 32
However, since the amount of exhaust from the blower motor 24 is large, the amount of air discharged from the blower motor 24 remains large.

Further, as shown in FIG.
Is removed only from the connection hole 45 provided in the communication passage 41,
The exhaust gas discharged from the outlet portion 44a of the detached connecting member 44 may be blown against the dust to blow the dust and be sucked through the suction port 40a of the floor suction tool 37. In this case, dust in a narrow place can be blown off, so that dust collection performance can be improved.

Embodiment 2 FIG. 8 is a cross-sectional view when a vacuum cleaner according to Embodiment 2 of the present invention is energized, and FIG. 9 is a bottom view. In the figure, the same or corresponding parts as those in FIG. 2 shown in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 81 denotes a first bellows which is attached to the bottom of the exhaust chamber 25 and the fixing plate 84 so as to be extendable and contractible. Reference numeral 82 denotes a gap provided between the first bellows 81 and the first bellows 81 outside the first bellows 81. A second bellows elastically attached between the bottom surface of the second bellows 25 and the fixing plate 84, 83 is provided on a side surface of the second bellows 82, and is a connecting portion connected to the connecting member 44, and 85 is a first bellows. Inside 8, outlets 86 provided in the fixed plate 84, 86 are a plurality of inlets provided in the fixed plate 84 between the first and second bellows.

Reference numeral 87 denotes a fixing plate 84 with the suction port 86 facing outward.
The first flexible skirt 88 provided on the first
Outside the skirt 87, the flexible second plate provided on the fixing plate 84 so as to surround the suction port 86 from the outside.
The first skirt 87 is shorter than the second skirt 88 by h.

Next, the operation will be described with reference to FIG.
First, as indicated by an arrow accompanying the rotation of the electric blower 23, the movement of the air starts, and the air from the dust collection chamber 22 passes through the electric blower 23, becomes high-pressure exhaust, and enters the exhaust chamber 25,
The first bellows 81 enters the first bellows 81 through the exhaust port 31, and the first bellows 81 is extended to push out the fixing plate 84 from the exhaust unit 28. At this time, the second bellows 82 also extends.

Next, the exhaust is discharged from the exhaust port 85 toward the floor F, and the exhaust hits the first skirt 87, and the pressure is applied to the space surrounded by the first skirt 87, the fixing plate 84, and the floor F. Occurs, lifting the cleaner body 20, and exhaust air flows out between the first skirt 87 and the floor F. At this time, since the second skirt 88 is longer by h than the first skirt 87, the exhaust flowing out of the first skirt 87 is not exhausted to the outside, and is located between the first and second skirts 87, 88. The air enters the air outlet 86, and further flows into the gap between the first and second bellows 81, 82.

Then, it flows into the connecting member 44 from the connecting portion 83 and enters the communication passage 41 of the floor suction tool 37. Most of the exhaust collides with the floor F at a substantially right angle by the front exhaust port 42, sowing the dust on the floor F and sucking the dust from the suction portion 38 to the suction port 40 a.
To move with dust. At this time, the exhaust gas from the rear exhaust port 43 also enters the suction port 40a from the suction section 38 together with the dust on the floor F. The exhaust gas containing dust and dust that has entered the suction pipe 40a becomes intake air, moves in the suction pipe 40, enters the dust collection chamber 22, is captured by the dust collection bag 21, and only the clean air is supplied to the electric blower 23. It is sucked.

When the power is not supplied after use, the first and second
The bellows 81, 82 are discharged and contracted to be fixed to the fixing plate 84 and the air outlet 28, respectively.

With the above-described structure, it is possible to easily move the step, to raise the dust from the floor surface to improve the suction performance, and to make the storage space compact.

Embodiment 3 In this embodiment, the air cushion of the first embodiment can be rotated. FIG. 10 is a cross-sectional view when a vacuum cleaner according to Embodiment 2 of the present invention is energized, FIG. 11 is a partial perspective view of FIG. 10, FIG. 12 is a cross-sectional view of FIG. 11, and FIG. It is sectional drawing.

In the figure, the same or corresponding parts as those in FIG. 2 shown in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 51 denotes an air wheel having rotating bearings 51a at both ends and formed in a cylindrical bag shape and formed of a flexible air-permeable material, and 52 supports bearings 51a at both ends of the air wheel 51, respectively. A pair of arms having a support member 52a and a connection member mounting portion 52b to which one end of the exhaust air inlet connection hose 53 or one end of the exhaust air outlet connection hose 54 is attached, and an opening 52c on the opposite side of the connection member mounting portion 52b. A hole 52d rotatably supported on the upper surface panel of the wind portion is provided. And the opening 52
c, when they are respectively attached to both sides of the air wheel 51, the respective openings 52c are formed so as not to face each other.
1 in the circumferential direction. The exhaust inlet connection member 5
3. The exhaust outlet connection member 54 is formed of a flexible material.

Reference numeral 55 denotes a connecting rod for connecting the pair of arms 52, and reference numeral 56 denotes a spring connected between the connecting rod 55 and the upper surface of the exhaust unit 28. Reference numeral 57 denotes an exhaust inlet provided on the lower surface of the exhaust chamber 25 and connected to the exhaust inlet connection member 53.
Then, the exhaust outlet connection member 54 is connected to the connection member 44.

Next, the operation will be described with reference to FIGS. First, the arm 52 is pressed against the spring force of the spring 56.
Is pressed down and locked by locking means (not shown). Then, when the power is turned on, the movement of air starts as indicated by the arrow accompanying the rotation of the electric blower 23, and the dust collection chamber 2 is moved.
The air from 2 passes through the electric blower 23, becomes high-pressure exhaust, enters the exhaust chamber 25, enters the air wheel 51 via the exhaust inlet connection member 53 connected to the exhaust inlet 57, and connects the air wheel 51 to the balloon. So that the vacuum cleaner body 2
0 is moved upward from the floor F.

The speed of the exhaust is rapidly reduced by entering the air cushion 32 having a volume larger than the volume of the exhaust inlet portion 57 passing therethrough, and the air cushion 32 is fully inflated. At this time, the opening 52c is
1, the openings 52c are oriented in the circumferential direction of the air wheel 51 so that they do not face each other, so that the exhaust gas flowing from the exhaust inlet 57 directly exits from the exhaust outlet connection 54. Not air wheels 5
The exhaust gas flows into the exhaust outlet connection portion 54 by inflating
After passing through the connecting member 44, the communication path 41 of the floor suction tool 37
to go into. Most of the exhaust collides with the floor F at a substantially right angle by the front exhaust port 42, sowing dust on the floor F and sucking the suction unit 3.
Forcibly move from 8 to the suction port 40a together with dust. At this time. Exhaust gas from the rear exhaust port 43 also enters the suction port 40a from the suction section 38 together with dust on the floor F.

When the electric vacuum cleaner is moved, the air cleaner 51 is smoothly deformed and rotated while the air wheel 51 is freely deformed and rotated even in a place having a step. At the time of non-energization after use, as shown in FIG.
1 is for exhausting the inside exhaust, deflating it, and
When the lock 2 is released from a lock (not shown), the lock 2 is drawn into the air discharge unit 28 by the spring 56 and stored.

With the above-described structure, the steps can be easily moved, the dust can be lifted from the floor surface to improve the suction performance, and the storage can be made compact.

Note that, as shown in FIG.
Alternatively, a fixed plate 61 having a bearing may be attached to the air cushion 32 shown in FIG. In addition, the dotted line shows the case where it is stored in the exhaust unit 28.

Embodiment 4 FIG. FIG. 15 is an external view of a stick type vacuum cleaner according to Embodiment 3, and FIG. 16 is a sectional view of a main part. In the figure, reference numeral 71 denotes a vacuum cleaner main body, 3
7 is a floor suction tool, 72 is a handle, 73 is an air cushion, 74 is an exhaust inlet connection member, and 75 is an air cushion 7
A flexible connecting member 76 for connecting the floor suction device 3 to the floor suction device 37 is a wheel attached to a lower portion of the air cushion 73.

The cleaner body 1 has the same structure as that of the first embodiment shown in FIG. 2 and includes a dust collection chamber, a motor room, and an exhaust chamber. Same as in the first mode. The air cushion 73 replaces the air cushion 32 and is made of the same air-permeable material as the air cushion 32 and has flexibility. The shape is higher than the air cushion 32 in the vertical direction, is elongated, and is formed in a bellows shape. The exhaust inlet connection member 74 is flexible, one end is connected to the exhaust chamber, and the other end is disposed below the air cushion 73.

Next, the operation will be described with reference to FIGS. First, with the rotation of the electric blower of the cleaner body, the movement of air starts, and the air from the dust collection chamber becomes high-pressure exhaust, enters the exhaust chamber 25, passes through the exhaust inlet connection member 74, and is discharged by the air cushion. Air flows in from the lower part of the air cushion 73 and inflates the air cushion 73. At this time, since the exhaust gas flows from the lower portion of the air cushion 73, the exhaust gas does not directly flow from the exhaust inlet connection member 74 to the connection member 75, but inflates the air cushion 73 like a balloon, so that the cleaner body 2
0 is moved upward from the floor F.

Then, the exhaust gas passes through the connecting member 75,
The dust enters the floor suction tool 37 and sucks up the dust on the floor surface F in the same manner as in the first embodiment.

The above is the normal operation by the exhaust from the electric motor, but as shown by the dotted line in FIG.
To apply a force W downward to raise the air cushion 73 to the height L to l.
When the air is blown out of the electric blower, the air that is shrunk separately from the air blower enters the floor suction tool 37 and is applied to the front exhaust port 42 and the rear exhaust port 43 in FIG. 2 to improve the dust collection performance. Let it.

Although the conventional stick-type vacuum cleaner is generally heavy due to the above-mentioned structure, it is also supported by the air cushion 73 provided with the wheels 76, so that the cleaner becomes lighter, is easy to move, and removes dust on the floor. The suction performance can be improved by floating from the surface.

Embodiment 5 17 and 18 are cross-sectional views of main parts of a vacuum cleaner according to Embodiment 5. 17 shows a case where the air cushion 32 is used, and FIG. 18 shows a case where it is not used. In the drawing, 47 is attached to the fixing plate 36, and the opening / closing valve 30 and the hole 4 communicating with the opening / closing valve 30 are provided.
7a and a valve mounting plate having another hole 47b.

With this configuration, when the air cushion 32 is used, as shown in FIG. 8, when the air cushion 32 swells due to the exhaust, the hole 47a communicates with the communication port 29 and is exhausted through the open / close valve. Exhaust from 32 is also exhausted from hole 47b. When the air cushion 32 is not used when the cleaner body 1 is lifted and used when cleaning the television or the desk top, etc., as shown in FIG. Is communicated with the communication port 29 and is exhausted without passing through the on-off valve body 30, thereby improving the exhaust efficiency and preventing the exhaust temperature from rising.

Embodiment 6 FIG. FIG. 19 is a cross-sectional view of main parts of a vacuum cleaner according to Embodiment 6. In the figure, the opening / closing valve body 30 is arranged on the upstream side of the electric blower 23, and in the figure, reference numeral 48 denotes a communication port provided on the handle 20a and to which the opening / closing valve body 30 is attached. With this configuration,
When the temperature of the exhaust gas rises, outside air enters from the upstream of the electric blower 23, so that the temperature rise of the exhaust gas and the temperature rise of the electric blower 23 can be prevented.

Embodiment 7 FIG. FIG. 20 is a cross-sectional view of a main part of a vacuum cleaner according to Embodiment 7. In the figure, a certain gap t is provided between the on-off valve body 30 and the communication port 29 so that a small amount of exhaust gas is always discharged so as not to reach an abnormal temperature. At this time, the air that goes out as the exhaust air enters through the bumper 39 of the floor suction tool 37 and cools the exhaust air. Reference numeral 48 denotes a power switch of the electric blower 23, which lowers the power or turns off the power when the temperature of the exhaust gas becomes equal to or higher than a temperature predetermined by a temperature sensor (not shown). Thus, it is possible to prevent the temperature of the exhaust gas and the temperature of the electric blower 23 from rising.

Reference numeral 49 denotes an air cushion which is disposed on the entire bottom surface of the cleaner main body 20 as compared with the air cushion 32.
Exhaust gas is sufficiently stored to make it easy to move.
By doing so, since the volume is large, heat exchange with the outside air is increased, and the air cooling effect is increased.

[0062]

As described above, according to the present invention, there is provided a floor suction device, a dust collecting chamber communicating with the floor suction device, and a cleaner main body for accommodating the electric blower. An exhaust port for discharging exhaust from the electric blower to the floor at a lower portion, and an air cushion formed to cover the exhaust port,
The air cushion and the floor suction tool are connected by a connecting member, and the exhaust is formed so as to be blown to the cleaning floor surface via the floor suction tool, thereby improving the mobility and suction performance of the cleaner body. be able to.

Further, since the air cushion is formed in a balloon shape, the air cushion can be easily moved on a step, and can be compactly stored when stored.

Further, since the air cushion has a bellows-like shape, when the handle is pushed downward to contract the exhaust portion, an exhaust force is applied separately from the exhaust from the electric blower, and the dust collecting performance can be improved. .

Since the air cushion is rotatable, the mobility and suction performance of the cleaner main body can be improved.

Further, since the air cushion is formed of a breathable material, heat exchange with the outside air is performed, and it is possible to prevent the temperature from becoming abnormally high.

Further, since the traveling wheels are provided below the air cushion, the mobility and suction performance of the cleaner body can be improved more.

Further, since the connecting member has a shape that can be expanded and contracted and bent and is configured to be detachable from the floor suction tool, the dust can be blown off from the connecting member by directly blowing the dust from the connecting member. Dust can be blown away, so that the dust collection performance can be improved.

Further, a temperature sensor for detecting the temperature of the exhaust gas or a pressure sensor for detecting the pressure of the exhaust gas, and an opening / closing valve for opening and closing the inside and outside of the cleaner body by the temperature or pressure of the exhaust gas detected by the temperature sensor or the pressure sensor. Body, the exhaust air temperature rise and the electric blower 2
3 can be prevented from rising.

Further, since the exhaust gas sent to the floor suction tool is set to 30 to 60% of the total exhaust gas amount, the exhaust gas temperature and the electric blower 23 can be prevented from increasing in temperature.

[Brief description of the drawings]

FIG. 1 is an external view of a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the vacuum cleaner according to Embodiment 1 of the present invention when energized.

FIG. 3 is a back view of the electric vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 4 is a bottom view of the vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 5 is a sectional view of the vacuum cleaner according to Embodiment 1 of the present invention when power is not supplied.

FIG. 6 is a cross-sectional view of the vacuum cleaner according to Embodiment 1 of the present invention when a connecting member is not mounted.

FIG. 7 is a cross-sectional view when the connecting member of the vacuum cleaner according to Embodiment 1 of the present invention is used.

FIG. 8 is a cross-sectional view of a vacuum cleaner according to Embodiment 2 of the present invention.

FIG. 9 is a bottom view of the vacuum cleaner according to Embodiment 2 of the present invention.

FIG. 10 is a cross-sectional view when energizing a vacuum cleaner according to Embodiment 3 of the present invention.

FIG. 11 is a perspective view of a main part of a vacuum cleaner according to Embodiment 3 of the present invention.

FIG. 12 is a cross-sectional view of a main part of a vacuum cleaner according to Embodiment 3 of the present invention.

FIG. 13 is a cross-sectional view of the vacuum cleaner according to Embodiment 3 of the present invention when power is not supplied.

FIG. 14 is a rear view of the vacuum cleaner according to Embodiment 3 of the present invention.

FIG. 15 is an external view of a vacuum cleaner according to Embodiment 4 of the present invention.

FIG. 16 is a fragmentary cross-sectional view of a vacuum cleaner according to Embodiment 4 of the present invention.

FIG. 17 is a fragmentary cross-sectional view of a vacuum cleaner according to Embodiment 5 of the present invention.

FIG. 18 is a fragmentary cross-sectional view of a vacuum cleaner according to Embodiment 5 of the present invention.

FIG. 19 is a cross-sectional view of a main part of a vacuum cleaner according to Embodiment 6 of the present invention.

FIG. 20 is a cross-sectional view of a main part of a vacuum cleaner according to Embodiment 7 of the present invention.

FIG. 21 is a sectional view of a conventional vacuum cleaner.

FIG. 22 is a cross-sectional view of a conventional vacuum cleaner.

[Explanation of symbols]

20 vacuum cleaner body, 20a handle, 23 electric blower,
25 exhaust chamber, 28 exhaust part, 30 on-off valve body, 32 air cushion, 36 fixing plate, 37 floor suction device, 38
Suction section, 39 bumper, 40a suction port, 44
Connecting member, 81 first bellows, 82 second bellows, 8
7 First skirt, 88 Second skirt, 51 Air wheels, 47 Valve mounting plate, 48 Power switch.

Claims (9)

[Claims] 1. A floor suction device, a vacuum cleaner body accommodating a dust collecting chamber and an electric blower communicating with the floor suction device, and an exhaust from the electric blower is placed below the vacuum cleaner body. An exhaust port for discharging to the surface side, an air cushion formed so as to cover the exhaust port, a communication member that connects the air cushion and the suction device for floor with a connecting member, and the exhaust air is cleaned via the suction device for floor. A vacuum cleaner having an operating handle formed so as to be sprayed on a surface. 2. The vacuum cleaner according to claim 1, wherein the air cushion is formed in a balloon shape. 3. The vacuum cleaner according to claim 2, wherein the air cushion has a bellows shape. 4. The vacuum cleaner according to claim 2, wherein the air cushion is rotatable. 5. The vacuum cleaner according to claim 2, wherein the air cushion is formed of a breathable material. 6. The vacuum cleaner according to claim 2, wherein running wheels are provided below the air cushion. 7. The vacuum cleaner according to claim 1, wherein the connecting member has an expandable and contractible shape and is detachably attached to the floor suction tool. 8. A temperature sensor for detecting the temperature of the exhaust gas or a pressure sensor for detecting the pressure of the exhaust gas, and an on-off valve for opening and closing the inside and outside of the cleaner body according to the temperature or the pressure of the exhaust gas detected by the temperature sensor or the pressure sensor. The vacuum cleaner according to any one of claims 1 to 7, further comprising a body. 9. The vacuum cleaner according to claim 1, wherein exhaust gas to be sent to the floor suction tool is 30 to 60% of the total exhaust gas amount.