JP3766921B2 - Vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention discharges the exhaust pressure from the electric blower from the lower part of the cleaner body, applies a floating force to the cleaner body using this exhaust pressure, and blows the exhaust to the floor surface through the floor suction tool. LikeRudenIt relates to a vacuum cleaner.
[0002]
[Prior art]
Conventionally, vacuum cleaners have been invented that use exhaust pressure to give the vacuum cleaner body a levitating force or spray it on the floor to improve running performance and dust absorption. It was happening.
FIG. 21 is a sectional view showing a conventional electric vacuum cleaner disclosed in, for example, Japanese Patent Laid-Open No. 6-133900, and another example is Japanese Utility Model Laid-Open No. 58-160557 shown in FIG.
The above publications will be described individually below.
[0003]
Japanese Patent Laid-Open No. 6-133900 (hereinafter referred to as Prior Art 1) will be described with reference to FIG.
94 is a main body of the vacuum cleaner, and has a dust collection chamber 95 and an electric blower 96 built-in. 97 is an exhaust port formed near the electric blower 96, 98 is a skirt formed on the bottom surface 6 of the cleaner body 1 so as to cover the exhaust port 4, and 7 is an exhaust intermediate port communicating with the exhaust port 97 and the skirt 98, Reference numeral 101 denotes a discharge port formed on the rear surface of the cleaner body 1. F is a floor surface.
Since it is configured in this manner, the exhaust from the electric blower 96 directly collides with the floor surface F, and the vacuum cleaner main body 94 is lifted from the floor surface by the exhaust pressure. Thereafter, the exhaust passes through the exhaust intermediate port 100 by the skirt 98 and is discharged out of the cleaner body 94 through the discharge port 101.
[0004]
As a result, by rotating the electric blower 96, the vacuum cleaner main body 94 floats from the floor surface F due to the exhaust pressure, so the frictional resistance between the floor surface F and the vacuum cleaner main body 94 is reduced, and the vacuum cleaner main body 94 It is easy to operate with less routing effort.
[0005]
Next, Japanese Utility Model Laid-Open No. 58-160557 (hereinafter referred to as Prior Art 2) will be described with reference to FIG.
91 is an air passage body that exhausts exhaust air from an electric blower (not shown) in the vicinity of the air inlet 93 of the suction tool 92, and 92 is an air outlet of the air passage body 91. D is dust on the floor surface F.
Since it is configured in this manner, the dust D is blown from the floor surface F by the exhaust and is sucked from the air inlet 93. As a result, even if the dust D is stuck to the floor surface F, it is surely blown away by the exhaust pressure, so that it is efficiently sucked.
[0006]
[Problems to be solved by the invention]
In the prior art 1 and the prior art 2 as described above, the following problems occur. In the prior art 1, the exhaust force lifts the cleaner body from the floor surface, but does not contribute to the suction of dust accumulated on the floor surface to 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 released into the air from the cleaner main body, and the operability such as movement of the cleaner main body is improved. Does not contribute at all.
[0007]
The present invention has been made to solve the above-described problems, and facilitates movement by using exhaust gas, and causes the vacuum cleaner body to float by causing the exhaust gas to collide with the floor surface from the vacuum cleaner body. Further, the dust is caused to rise from the floor surface by colliding with dust accumulated on the floor surface from the floor suction tool. As a result, an object of the present invention is to obtain a vacuum cleaner in which exhaust from the electric blower can improve the mobility and suction performance of the cleaner body.
[0008]
[Means for Solving the Problems]
  An electric vacuum cleaner according to the present invention includes a floor suction tool, a dust collection chamber communicating with the floor suction tool, and a vacuum cleaner main body that houses an electric blower, and is provided on a bottom surface of the vacuum cleaner main body. Exhaust air that exhausts air from the blower to the floorCover the mouth and the exhaust portAn inlet connected to the exhaust outlet and an outlet for discharge;Bag-likeAn air cushion, and the air cushion provided on a lower surface of the air cushion.On the bottom of the unitStoring and fixingAlong with protecting the air cushionA fixed plate,SaidAnd a connecting member that connects the outlet of the air cushion and the floor suction tool.
[0009]
  Also air cushionTheIt is formed in a balloon shape.
[0010]
Further, the air cushion has a bellows shape.
[0011]
  Also, below the air cushionIn addition,Traveling wheels are provided.
[0012]
  A floor suction tool; a dust collecting chamber communicating with the floor suction tool; and a vacuum cleaner main body for storing the electric blower; and a floor surface provided on the bottom surface of the vacuum cleaner main body for exhausting from the electric blower. Exhaust to the sideMouth,TheBoth ends are rotatably supported below the exhaust port,To the exhaust portThrough the connecting memberA cylindrical air wheel having an inlet and a discharge outlet to be connected, and a connecting member for connecting the outlet of the air wheel and the floor suction tool.
[0013]
  Also air cushionOr air wheelsIt is made of a breathable material.
[0015]
  Also, a temperature sensor that detects the temperature of the exhaust or a pressure sensor that detects the pressure of the exhaust, and this temperature sensor orSaidAnd an on-off valve body that opens and closes the inside and outside of the cleaner body by the temperature or pressure of the exhaust gas detected by the pressure sensor.
[0016]
Further, the exhaust gas sent to the floor suction tool is 30 to 60% of the total exhaust amount.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 is an external view of the electric 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 vacuum cleaner main body, which includes a dust collection chamber 22 that houses a disposable dust collection bag 21 in the front, an electric motor chamber 24 that houses an electric blower 23 in the rear, and an exhaust chamber 25 in the rear.
[0018]
Reference numeral 20a denotes an operation handle for holding the cleaner body 20 during cleaning. A recess 26 is provided on the outer bottom surface of the cleaner body 20, and the recess 26 is provided below the dust collection chamber 22. It is formed by the member storage portion 27 and the air exhaust portion 28 provided below the exhaust chamber 25. 29 is a communication port for communicating with the outside air formed in the exhaust chamber 25. The communication port 29 opens on the outer surface of the communication port 29 when the exhaust from the electric blower 23 reaches a predetermined temperature or a predetermined pressure. (Deformed as indicated by the dotted line in the figure) An on-off valve body 30 is attached.
[0019]
An exhaust port 31 is provided on the lower surface of the exhaust chamber 25 and communicates with the exhaust section 28. A flexible air cushion 32 is housed in the exhaust section 28 and is formed into a bag shape from a breathable material. The inlet 33 and the outlet 34 are fixed so as to cover them. 35 is provided in the vicinity of the outlet 34, and the exhaust gas is flexible for shutting off the exhaust to prevent the bag-like air cushion 32 from obtaining a predetermined bulge by flowing the shortest distance from the inlet 31 to the outlet 34. A plurality of projections 35 </ b> A are formed in the vicinity of the outlet 34 to prevent the outlet 34 from being in close contact with the inner surface of the air cushion 32 by the exhaust pressure. Reference numeral 36 denotes a fixing plate for storing and fixing the air cushion 32 to the air exhaust portion 28 when the vacuum cleaner main body 20 is not used. The fixing plate 36 is made of a material harder than the air cushion 32 and wear-resistant so as to be slippery. Yes.
[0020]
Reference numeral 37 denotes a horizontally long and substantially rectangular floor suction tool, which includes a suction portion 38 on the bottom surface and a bumper 39 having one end made of a soft material covering the periphery of the suction portion 38 and substantially in contact with the floor surface F; The suction portion 38 is constituted by a suction pipe 40 having the other end communicating with the dust collection chamber 22. Reference numeral 40 a denotes a suction port on the suction portion 38 side of the suction pipe 40. Reference numeral 41 denotes a communication path that connects the front exhaust port 42 provided on the front surface of the suction portion 38 and the rear exhaust port 43 provided on the rear surface.
44 is a connecting member made of a flexible and flexible material, one end of which is detachably provided at the communication path 41 and the other end at the outlet 34, most of which is housed in the recess 26 and is connected to the communication path 41. The air cushion 32 is communicated.
Note that the end of the connection member 44 connected to the communication path 41 is attached toward the front exhaust port 42 so that the exhaust of the electric blower 23 flows mainly to the front exhaust port 42 side.
[0021]
Next, the operation will be described with reference to FIGS. First, as indicated by the arrow accompanying the rotation of the electric blower 23 that rotates at high speed, the movement of air begins, and the air from the dust collection chamber 22 passes through the electric blower 23 to become high-pressure exhaust gas and enters the exhaust chamber 25. The air cushion 32 enters the air cushion 32 through the exhaust port 31, and the air cushion 32 is inflated like a balloon to move the cleaner body 20 upward from the floor F.
[0022]
In addition, the speed of exhaust rapidly becomes low by entering the air cushion 32 having a volume larger than the volume of the exhaust port 31 passing therethrough, and the air cushion 32 is sufficiently inflated.
At this time, the baffle sheet 35 is also moved to the outlet 34 side by the exhaust, and the protrusion 35A secures a gap between the inner wall of the air cushion 32 and prevents the outlet 34 from closing, and the exhaust directly exits from the outlet 34. The exhaust gas bypasses the baffle sheet 35 and passes through the gap toward the outlet 34.
[0023]
The exhaust gas passes through the connection 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 surface F at a substantially right angle by the front exhaust port 42, so that the dust on the floor surface F rises and is forcibly moved together with the dust from the suction portion 38 to the suction port 40a. At this time. The exhaust from the rear exhaust port 43 also enters the suction port 40a from the suction portion 38 together with dust on the floor surface F.
And the exhaust gas containing the dust that has entered the suction port 40a becomes the intake air, moves in the suction pipe 40, enters the dust collection chamber 22, is captured only in the dust collection bag 21, and only clean air is an electric blower. 23 is sucked.
[0024]
When the above operation is repeated, the circulating air becomes high temperature due to the power consumption of the electric blower 23, but the on-off valve body 30 catches a predetermined temperature and discharges the exhaust outside the main body 20. As a result, the discharged amount of outside air is sucked through the gap with the floor F generated by the deformation of the bumper 39 attached to the floor suction tool 37, and the temperature is lowered. Further, when the exhaust temperature becomes high due to the clogging of the dust bag 21 or the like, the on-off valve body 30 is similarly opened, and outside air enters from the floor suction tool 37 to prevent the temperature from rising.
[0025]
Note that, by configuring the air cushion 32 with a breathable material, part of the exhaust is discharged from the side surface of the air cushion 32. As a result, a part of the exhaust is always discharged to the outside, so that fresh air enters the cleaner body 20 from the suction tool 37 and prevents a high temperature. Furthermore, when the inside of the cleaner body 20 becomes abnormally hot, the on-off valve body 30 catches the temperature and discharges the exhaust to the outside of the body 20.
[0026]
  When the vacuum cleaner is moved, the side surface of the air cushion 32 is soft and freely deformed even in a stepped area, and the vacuum cleaner is smoothly moved. In addition, since the bottom surface of the air cushion 32 is made of a high-hardness, wear-resistant material and a slippery fixing plate 36,Air cushion32 is protected and easy to move.
[0027]
In addition, the air cushion 32 is provided at the rear of the cleaner body 20, and as shown in FIG. 2, the height L of the air cushion 32 is increased so that the center of gravity W1 moves to W2. Since the load is applied to the suction tool 37 side, the floor surface F and the suction tool 37 are reliably in contact with each other, so that the dust collection efficiency is improved.
[0028]
Then, when not energized after use, as shown in FIG. 5, the air cushion 32 discharges and exhausts the air in the air cushion 32, and is fixed and stored in the exhaust section 28 by the fixing plate 36.
[0029]
Since it is configured as described above, it is easy to move between steps, dust can be lifted from the floor surface to improve suction performance, and it can be compacted when stored, preventing an increase in exhaust temperature. it can.
[0030]
In the above embodiment, when the exhaust gas becomes high temperature, the on / off valve body 30 exhausts the exhaust gas to the outside of the main body 20, but the exhaust gas sent to the floor suction tool is 30 to 60% of the total exhaust gas amount. If it does, abnormally high temperature can be avoided.
[0031]
Further, the entire length or part of the side surface of the air cushion 32 is formed in a bellows shape that expands and contracts in the vertical direction. After use, the air cushion 32 is pushed upward to be contracted, and the exhaust plate 28 is not fixed to the exhaust plate 28 without fixing the fixing plate 36. You may store in 28.
In addition, a large number of exhaust holes through which the exhaust is exhausted may be provided in the fixed plate 36, and the cleaner main body 20 may be lifted and moved easily by the exhaust discharged through the exhaust holes.
[0032]
Further, when the handle 20a is pushed downward to contract the exhaust section 32, the exhaust force that is contracted separately from the exhaust from the electric blower 23 is applied to the front exhaust 42 and the rear exhaust 43, thereby collecting dust. To improve.
[0033]
  Moreover, as shown in FIG. 6, you may remove and use the connection member 44. FIG. In this case, since the suction part 38 has a negative pressure from the outside air, the outside air enters from the connection hole 45 provided in the communication path 41 and connecting the connection member 44, and the pre-exhaustmouth42, Most of the exhaust from the rear exhaust port 43 collides with the floor surface F from the front exhaust port 42 at a substantially right angle, so that dust on the floor surface F rises and is sucked together with dust from the suction portion 38 to the suction port 40a. The Although the discharge amount from the outlet 34 of the air cushion 32 is slightly increased, the exhaust amount of the blower motor 24 is large, so that it remains inflated.
[0034]
Further, as shown in FIG. 7, the connection member 44 is removed only from the connection hole 45 provided in the communication path 41, and the exhaust discharged from the outlet 44 a of the removed connection member 44 is blown to the dust. Dust may be blown off and sucked from the suction port 40a of the floor suction tool 37. In this case, since dust in a narrow place can be blown away, dust collection performance can be improved.
[0035]
Embodiment 2. FIG.
8 is a cross-sectional view when the electric vacuum cleaner is energized according to Embodiment 2 of the present invention, 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 is omitted.
[0036]
Reference numeral 81 denotes a first bellows that is stretchably attached between the bottom surface of the exhaust chamber 25 and the fixing plate 84, and 82 denotes a gap between the first bellows 81 and the outside of the first bellows 81. And a second bellows 83 which is attached between the fixing plate 84 and the fixing plate 84, 83 is provided on the side surface of the second bellows 82 and connected to the connecting member 44, and 85 is an inner side of the first bellows 8. A discharge port 86 provided in the fixed plate 84 is a plurality of suction ports provided in the fixed plate 84 between the first and second bellows.
[0037]
Reference numeral 87 denotes a flexible first skirt provided on the fixing plate 84 with the suction port 86 on the outside. Reference numeral 88 denotes an outer side of the first skirt 87, and the fixing plate 84 surrounds the suction port 86 from the outside. The flexible second skirt is provided, and the first skirt 87 is shorter than the second skirt 88 by h.
[0038]
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 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, and the exhaust port 31. The first bellows 81 is further extended and the fixing plate 84 is pushed out from the exhaust portion 28. At this time, the second bellows 82 also extends.
[0039]
Next, the exhaust is discharged from the exhaust port 85 toward the floor surface F, the exhaust hits the first skirt 87, and pressure is generated in the space surrounded by the first skirt 87, the fixing plate 84 and the floor surface F, The cleaner main body 20 is lifted, and the exhaust gas flows out from between the first skirt 87 and the floor surface F. At this time, since the second skirt 88 is longer than the first skirt 87 by h, the exhaust gas flowing out of the first skirt 87 is not exhausted to the outside, and is not between the first and second skirts 87 and 88. It enters, passes through the exhaust port 86, and flows into the gap between the first and second bellows 81 and 82.
[0040]
And it flows in into the connection member 44 from the connection part 83, and enters into the communicating path 41 of the suction tool 37 for floors. Most of the exhaust collides with the floor surface F at a substantially right angle by the front exhaust port 42, so that the dust on the floor surface F rises and is forcibly moved together with the dust from the suction portion 38 to the suction port 40a. At this time, the exhaust from the rear exhaust port 43 also enters the suction port 40a from the suction portion 38 together with dust on the floor surface F. Exhaust gas containing dust that has entered the suction port 40a becomes intake air, moves through the suction pipe 40, enters the dust collection chamber 22, is captured only in the dust bag 21, and only clean air is supplied to the electric blower 23. It is sucked.
[0041]
When the power is not supplied after use, the first and second bellows 81 and 82 are discharged and contracted to be fixed to the fixed plate 84 exhaust section 28 and stored.
[0042]
Since it comprised as mentioned above, a level | step difference can be made easy to move, dust can be floated from a floor surface and a suction performance can be improved, and it can be packed compactly at the time of accommodation.
[0043]
  Embodiment 3 FIG.
  In the present embodiment, the air cushion of the first embodiment can be rotated. FIG. 10 shows an embodiment of the present invention.3FIG. 11 is a partial perspective view of FIG. 10, FIG. 12 is a sectional view of FIG. 11, and FIG. 13 is a sectional view showing a state when no power is supplied.
[0044]
In the figure, the same or corresponding parts as those in FIG. 51 has rotating bearings 51a at both ends, and is formed in a cylindrical bag shape, and is formed of a flexible breathable material. 52 supports bearings 51a at both ends of the air wheel 51. It is a pair of arms having a connection member attachment portion 52b to which one end of the support portion 52a and 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 attachment portion 52b, A hole 52d that is rotatably supported by the top panel of the wind portion is provided. When the openings 52c are attached to both sides of the air wheel 51, the openings 52c are directed in the circumferential direction of the air wheel 51 so as not to face each other.
The exhaust inlet connection member 53 and the exhaust outlet connection member 54 are made of a flexible material.
[0045]
Reference numeral 55 denotes a connecting rod for connecting the pair of arms 52, and 56 denotes a spring connected between the connecting rod 55 and the upper surface of the exhaust section 28. Reference numeral 57 denotes an exhaust inlet portion provided on the lower surface of the exhaust chamber 25 to which the exhaust inlet connection member 53 is connected. The exhaust outlet connection member 54 is connected to the connection member 44.
[0046]
Next, the operation will be described with reference to FIGS. First, the arm 52 is pushed down against the spring force of the spring 56 and locked by a locking means (not shown). When the power is turned on, the movement of the air starts as indicated by the arrow along with the rotation of the electric blower 23, 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. Then, it enters the air wheel 51 through the exhaust inlet connecting member 53 connected to the exhaust inlet portion 57, and the air wheel 51 is inflated like a balloon to move the cleaner body 20 upward from the floor F.
[0047]
  Note that the exhaust speed is higher than the volume of the exhaust inlet 57 through which the air passes.Wheel 51As you get in, you slow down rapidly and airWheel 51Inflate fully. At this time, when the openings 52c are attached to both sides of the air wheel 51, the openings 52c are directed in the circumferential direction of the air wheel 51 so as not to face each other. The air wheel 51 is not inflated directly from the exhaust outlet connection portion 54, and the exhaust flows into the exhaust outlet connection portion 54, passes through the connection member 44, and enters the communication passage 41 of the floor suction device 37. Most of the exhaust collides with the floor surface F at a substantially right angle by the front exhaust port 42, so that the dust on the floor surface F rises and is forcibly moved together with the dust from the suction portion 38 to the suction port 40a. At this time. The exhaust from the rear exhaust port 43 also enters the suction port 40a from the suction portion 38 together with dust on the floor surface F.
[0048]
When the vacuum cleaner is moved, the air wheel 51 can be freely deformed and moved smoothly even when there is a step.
When the air wheel 51 is not energized after use, as shown in FIG. 13, the air wheel 51 discharges the exhausted air, constricts it, and releases the arm 52 from the lock (not shown). Retracted and stored.
[0049]
Since it comprised as mentioned above, a level | step difference can be made easy to move, dust can be floated from a floor surface, and a suction performance can be improved, and it can be packed compactly at the time of accommodation.
[0050]
In addition, as shown in FIG. 14, the fixing plate 61 which has a bearing may be attached to the air cushion 32 shown in Embodiment 1, and the wheel 61 may be attached. A dotted line indicates a case where the air is stored in the exhaust section 28.
[0051]
  Embodiment 4 FIG.
  FIG. 15 shows an embodiment.4FIG. 16 is a sectional view of an essential part of the stick-type vacuum cleaner according to FIG. In the figure, 71 is a vacuum cleaner main body, 37 is a floor suction tool, 72 is a handle, 73 is an air cushion, 74 is an exhaust inlet connection member, and 75 is a flexible connection between the air cushion 73 and the floor suction tool 37. A connecting member 76 is a wheel attached to the lower part of the air cushion 73.
[0052]
The vacuum cleaner main body 1 has the same configuration as that shown in FIG. 2 of the first embodiment, and includes a dust collection chamber, an electric motor chamber, and an exhaust chamber. The floor suction tool 37 is the same as that of the first embodiment. The same. The air cushion 73 is replaced with the air cushion 32, and the material is the same breathable material as the air cushion 32 and is flexible. The shape is higher in the vertical direction than the air cushion 32, is elongated, and is formed in a bellows shape.
The exhaust inlet connection member 74 has flexibility, one end is connected to the exhaust chamber, and the other end is disposed below the air cushion 73.
[0053]
Next, the operation will be described with reference to FIGS. First, with the rotation of the electric blower of the main body of the vacuum cleaner, the movement of air starts, 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 the exhaust is air cushion. It flows in from the lower part of 73, and the air cushion 73 is inflated. At this time, since the exhaust gas flows in from the lower part of the air cushion 73, the exhaust gas does not flow directly from the exhaust inlet connection member 74 to the connection member 75, and the air cushion 73 is inflated like a balloon to bring the cleaner body 20 from the floor F. Move upward.
[0054]
Then, the exhaust gas passes through the connecting member 75, enters the floor suction tool 37, and soars and sucks up dust on the floor surface F as in the first embodiment.
[0055]
The above is a normal operation by exhaust from the electric motor. However, as shown by the dotted line in FIG. 15, if the air cushion 73 is contracted to the height L˜l by applying the force W downward to the handle 72, the electric blower The exhaust force of the contracted air separately from the exhaust 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 of dust.
[0056]
Since it was configured as described above, the conventional stick type vacuum cleaner was generally heavy, but it is also supported by the air cushion 73 provided with the wheels 76, so it becomes lighter and easier to move, and dust floats from the floor surface. The suction performance can be improved.
[0057]
Embodiment 5. FIG.
17 and 18 are cross-sectional views of main parts of the electric vacuum cleaner according to the fifth embodiment. 17 shows a case where the air cushion 32 is used, and FIG. 18 shows a case where the air cushion 32 is not used. In the figure, reference numeral 47 is attached to the fixed plate 36, and the opening / closing valve body 30, the hole 47 a communicating with the opening / closing valve body 30 and another hole. 47b is a valve mounting plate having 47b.
[0058]
  With this configuration, when using the air cushion 32,17As shown in FIG. 5, when the air cushion 32 is expanded with exhaust, the hole 47a communicates with the communication port 29 and is exhausted through the on-off valve. The exhaust from the air cushion 32 is also exhausted through the hole 47b. When the air cleaner 32 is not used when the vacuum cleaner main body 1 is lifted and used for cleaning a TV, a desk, etc., as shown in FIG. Is communicated with the communication port 29 and exhausted without passing through the on-off valve body 30, so that the exhaust efficiency is improved and the temperature of the exhaust is not increased.
[0059]
Embodiment 6 FIG.
FIG. 19 is a cross-sectional view of a main part of the electric vacuum cleaner according to the sixth embodiment. In the figure, the on-off valve body 30 is disposed on the upstream side of the electric blower 23. In the figure, 48 is a communication port provided on the handle 20a to which the on-off valve body 30 is attached. With this configuration, since the outside air enters from the upstream side of the electric blower 23 when the exhaust gas temperature rises, the exhaust gas temperature rise and the electric blower 23 temperature rise can be prevented.
[0060]
Embodiment 7 FIG.
FIG. 20 is a cross-sectional view of a main part of the electric vacuum cleaner according to the seventh embodiment. In the figure, a constant 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 to such an extent that it does not become an abnormal temperature. At this time, outside air enters from the bumper 39 of the floor suction tool 37 to cool the exhaust as it goes outside. Furthermore, 48 is a power changeover switch of the electric blower 23, and when the temperature of the exhaust gas becomes higher than a temperature predetermined by a temperature sensor (not shown), the power is reduced or the power is turned off. Thus, the temperature rise of the exhaust gas and the temperature rise of the electric blower 23 can be prevented.
[0061]
Reference numeral 49 denotes an air cushion, which is disposed on the entire bottom surface of the cleaner body 20 as compared to the air cushion 32 described above, so that when the cleaner body 20 is heavy, the exhaust is sufficiently stored and easily moved. It is a thing. By doing in this way, since the volume is large, heat exchange with outside air becomes large and the air cooling effect becomes large.
[0062]
【The invention's effect】
  As described above, according to the present invention, a floor suction tool, a dust collecting chamber communicating with the floor suction tool, and a vacuum cleaner main body for storing an electric blower are provided, and are provided on the bottom surface of the vacuum cleaner main body. Exhaust gas that exhausts air from the electric blower to the floorCover the mouth and the exhaust portAn inlet connected to the exhaust outlet and an outlet for discharge;Bag-likeAn air cushion, and the air cushion provided on a lower surface of the air cushion.On the bottom of the unitStoring and fixingAlong with protecting the air cushionA fixed plate,SaidSince the connecting member for connecting the outlet of the air cushion and the suction tool for floor is provided, the mobility and suction performance of the cleaner body can be improved.Also, it can be compacted when stored.
[0063]
  Also air cushionTheSince it is formed in a balloon shape, it is easy to move the steps, and it can be compacted when stored.
[0064]
In addition, since the air cushion has a bellows shape, when the handle is pushed downward to contract the exhaust section, an exhaust force is applied separately from the exhaust from the electric blower, and the dust collection performance can be improved.
[0065]
  Also, below the air cushionIn addition,Since the traveling wheels are provided, it is possible to improve the mobility and suction performance of the cleaner body.
[0066]
  A floor suction tool; a dust collecting chamber communicating with the floor suction tool; and a vacuum cleaner main body for storing the electric blower; and a floor surface provided on the bottom surface of the vacuum cleaner main body for exhausting from the electric blower. Exhaust to the sideMouth,TheBoth ends are rotatably supported below the exhaust port,To the exhaust portThrough the connecting memberSince it has a cylindrical air wheel having an inlet and an outlet for connection, and a connecting member for connecting the outlet of the air wheel and the floor suction tool, the mobility of the cleaner body and The suction performance can be improved better,Also, it can be compacted when stored.
[0067]
  Also air cushionOr air wheelsSince it is made of a breathable material, heat exchange with the outside air is performed, and an abnormally high temperature can be prevented.
[0069]
  Also, a temperature sensor that detects the temperature of the exhaust or a pressure sensor that detects the pressure of the exhaust, and this temperature sensor orSaidSince the on-off valve body that opens and closes the inside and outside of the cleaner body by the temperature or pressure of the exhaust gas detected by the pressure sensor is provided, it is possible to prevent the exhaust gas temperature from rising and the electric blower 23 from rising.
[0070]
Moreover, since the exhaust gas sent to the floor suction tool is set to 30 to 60% of the total exhaust amount, it is possible to prevent the exhaust gas temperature rise and the electric blower 23 temperature rise.
[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 electric vacuum cleaner according to Embodiment 1 of the present invention when energized.
FIG. 3 is a rear view of the electric vacuum cleaner according to Embodiment 1 of the present invention.
FIG. 4 is a bottom view of the electric vacuum cleaner according to Embodiment 1 of the present invention.
FIG. 5 is a cross-sectional view of the electric vacuum cleaner according to Embodiment 1 of the present invention when not energized.
FIG. 6 is a cross-sectional view of the electric vacuum cleaner according to Embodiment 1 of the present invention when the connecting member is not attached.
FIG. 7 is a cross-sectional view of the electric vacuum cleaner according to Embodiment 1 of the present invention when in use.
FIG. 8 is a sectional view of a vacuum cleaner according to Embodiment 2 of the present invention.
FIG. 9 is a bottom view of a vacuum cleaner according to Embodiment 2 of the present invention.
FIG. 10 is a cross-sectional view of the electric vacuum cleaner according to Embodiment 3 of the present invention when energized.
FIG. 11 is a perspective view of main parts 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 electric vacuum cleaner according to Embodiment 3 of the present invention when not energized.
FIG. 14 is a rear view of the electric 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 cross-sectional view of a main part of a vacuum cleaner according to Embodiment 4 of the present invention.
FIG. 17 is a cross-sectional view of a main part of a vacuum cleaner according to Embodiment 5 of the present invention.
FIG. 18 is a cross-sectional view of a main part 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 cross-sectional view of a conventional electric vacuum cleaner.
FIG. 22 is a cross-sectional view of a conventional electric vacuum cleaner.
[Explanation of symbols]
20 Vacuum Cleaner Body, 20a Handle, 23 Electric Blower, 25 Exhaust Chamber, 28 Ventilation Unit, 30 Opening and Closing Valve Body, 32 Air Cushion, 36 Fixing Plate, 37 Floor Suction Tool, 38 Suction Unit, 39 Bumper, 40a Suction Port , 44 connecting member, 81 first bellows, 82 second bellows, 87 first skirt, 88 second skirt, 51 air wheel, 47 valve mounting plate, 48 power selector switch.

Claims (8)

A floor suction tool, a dust collecting chamber communicating with the floor suction tool, and a vacuum cleaner main body storing the electric blower,
An exhaust port that is provided on the bottom surface of the vacuum cleaner body and exhausts exhaust from the electric blower to the floor surface ;
A bag-shaped air cushion disposed so as to cover the exhaust port and having an inlet connected to the exhaust port and an outlet for discharge;
A fixing plate provided on the lower surface of the air cushion for storing and fixing the air cushion on the bottom surface of the main body and protecting the air cushion ;
A connecting member which connects the outlet and the floor suction tool of the air cushion,
A vacuum cleaner characterized by comprising:   The vacuum cleaner according to claim 1, wherein the air cushion is formed in a balloon shape.   The vacuum cleaner according to claim 1, wherein the air cushion has a bellows shape.   The electric vacuum cleaner according to any one of claims 1 to 3, wherein a traveling wheel is provided below the air cushion. A floor suction tool, a dust collecting chamber communicating with the floor suction tool, and a vacuum cleaner main body storing the electric blower,
An exhaust port that is provided on the bottom surface of the vacuum cleaner body and exhausts exhaust from the electric blower to the floor surface ;
Both ends below the exhaust port is supported rotatably, and an air wheel cylinder shape having an inlet and an outlet for discharge which is connected via a connecting member to the exhaust port,
A connecting member connecting the outlet of the air wheel and the floor suction tool;
A vacuum cleaner characterized by comprising:   The vacuum cleaner according to any one of claims 1 to 5, wherein the air cushion or the air wheel is made of a breathable material. A temperature sensor that detects the temperature of the exhaust or a pressure sensor that detects the pressure of the exhaust; and
Off valve body for opening and closing the inside and outside of the cleaner body by the temperature or pressure of the detected exhaust gas by the temperature sensor or the pressure sensor,
The electric vacuum cleaner according to any one of claims 1 to 6, further comprising: The vacuum cleaner according to any one of claims 1 to 7, wherein the exhaust discharged to the floor suction tool is 30 to 60% of the total displacement.

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