JP3890889B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner that can be easily moved by lifting the vacuum cleaner body from the floor surface.
[0002]
[Prior art]
FIG. 27 is a longitudinal sectional view showing a vacuum cleaner body of a conventional electric vacuum cleaner described in JP-A-6-133900 (Prior Art 1).
In the figure, reference numeral 120 denotes a vacuum cleaner main body, and a dust collection chamber 121 in which a dust collection bag 122 is detachably accommodated and an electric motor chamber 123 in which an electric blower 124 is accommodated are provided. A hose 125 is detachably attached to the front side of the dust collection chamber 121, and a floor suction tool (not shown) is detachably attached to the tip of the hose.
[0003]
A first exhaust port 126 opens from the bottom 123 a of the motor chamber 123 to the bottom 120 a of the cleaner body 120, and 127 is provided on the bottom 120 a of the cleaner body 120 around the first exhaust port 126. The first skirt 128 is a second skirt provided on the outer periphery of the first skirt 127. Reference numeral 129 denotes a second exhaust port provided in the bottom portion 120 a between the first skirt 127 and the second skirt 128, and reference numeral 130 denotes an exhaust exhaust port provided on the rear wall of the cleaner body 120. X is a floor surface.
[0004]
In the conventional vacuum cleaner configured as described above, the exhaust from the electric blower 124 is discharged from the first exhaust port 126 and collides with the floor surface X, and the main body 120 of the vacuum cleaner is lifted from the floor surface X. . The exhaust gas flows between the first skirt 127 and the second skirt 128, passes through the second exhaust port 129, and is discharged out of the cleaner body 120 through the discharge port 130.
Thus, by operating the electric blower 124, the vacuum cleaner main body 120 is lifted from the floor surface X by the exhaust pressure, so the frictional resistance between the floor surface X and the vacuum cleaner main body 120 is reduced. 120 can be easily moved with little effort.
[0005]
Japanese Patent Laid-Open No. 4-341229 (Prior Art 2) discloses a pressure receiving chamber having a convex portion on the outer periphery at the lower part of a vacuum cleaner body having an electric blower and a dust collecting chamber. A floating vacuum cleaner is described in which exhaust from an electric blower is supplied from an exhaust port formed over the entire periphery of the bottom surface to increase the pressure in the pressure-receiving chamber so that the main body of the vacuum cleaner floats.
[0006]
Further, JP-A-8-299230 (Prior Art 3) discloses an electric blower that generates suction pressure, a floor nozzle provided in the lower part of the cleaner body, and an exhaust of an electric blower provided on the lower surface of the floor nozzle. A blowout outlet that blows out the flow, a floating plate that floats the floor nozzle provided on the outer periphery of the blowout opening, a roller that enables the floor nozzle to move, and a roller support member that rotatably supports the roller can be moved up and down Member and an elastic member that constantly urges the roller downward, and the roller support member has a pressure receiving portion that receives the pressure of the exhaust flow, and when the pressure of the exhaust flow is applied to the pressure receiving portion, the roller moves upward. In addition, there is described an upright type vacuum cleaner in which a roller is forcibly moved downward by an elastic member when an exhaust flow pressure is not applied to the pressure receiving portion.
[0007]
[Problems to be solved by the invention]
For example, when the vacuum cleaner of the prior art 1 is driven by wheels when the cleaner body 100 is moved before use, the first and second skirts 107 and 108 rub against the floor surface X. There are problems that the second skirts 107 and 108 are worn and dust adhering to the floor surface X is wound up.
Moreover, since the exhaust of the electric blower 104 is blown directly onto the floor surface, not only dust on the floor rises but also heavy parts such as a motor and a cord reel (not shown) of the electric blower 104 of the cleaner body 100. Since the side with built-in sinks compared to the side with a lighter part such as the dust collection bag 102 of the dust collecting chamber 101 built-in, there is a problem that the cleaner body 100 floats in an inclined state and becomes unbalanced. .
[0008]
Moreover, since the floating electric vacuum cleaner of the prior art 2 blows the exhaust of the electric blower directly on the floor, dynamic pressure is applied to the floor, so that the exhaust pressure in the pressure receiving chamber becomes unbalanced and the vacuum cleaner main body is It is difficult to float horizontally. In order to solve such a problem, it is necessary to take measures such as increasing the exhaust pressure on the heavier side of the built-in components and decreasing the exhaust pressure on the lighter side, but the structure becomes extremely complicated.
Further, when the cord is pulled out from the cord reel, the center of gravity of the cleaner body changes depending on the length of the cord, so that the float of the cleaner body is always unbalanced.
[0009]
Next, in the upright type vacuum cleaner of prior art 3, the relationship between the cross-sectional area of the blowout flow path and the blowout opening is unclear, and therefore the exhaust pressure in the air chamber is difficult to equalize. In addition, the outlet is provided at one place, but unless it is provided directly under the center of gravity of the vacuum cleaner body, the ascent will be unbalanced, and if the ascent is unbalanced, air will flow from between the floor and the levitation plate. Since the outside air enters the room and the exhaust inside the room escapes, the pressure in the air chamber decreases and it becomes difficult to float the cleaner body.
In particular, the upright type vacuum cleaner is used by tilting the vacuum cleaner body with respect to the floor surface, so that the center of gravity always changes and becomes unbalanced, as well as outside air from between the floor surface and the floating plate. It is difficult for the vacuum cleaner body to rise due to intrusion or exhaust escape.
[0010]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vacuum cleaner that can reliably float the vacuum cleaner body from the floor surface in a balanced manner.
[0011]
[Means for Solving the Problems]
  The electric vacuum cleaner according to the present invention includes a vacuum cleaner body having an electric motor chamber in which a dust collection chamber and an electric blower are housed, and a lower portion of the vacuum cleaner body, and the vacuum cleaner main body is exhausted from the electric blower. A levitating device that levitates from the floor surface, the levitating device having a communication port communicating with the electric motor chamber at the upper part, a plurality of levitating exhaust outlets at the lower part, an exhaust pressure equalizing chamber for accumulating the exhaust, and a plurality of A levitated body provided with a levitating exhaust port, and around the levitated bodyInstalledOne endFolded insideThe outer surface that touches the floorButAnd a skirt member made of a soft material having wear resistance or slip resistance.The floating exhaust outlet is opened toward the bent portion of the skirt member.It is a thing.
[0012]
  The vacuum cleaner according to the present invention includes a vacuum cleaner body having an electric motor chamber in which a dust collection chamber and an electric blower are housed, and a lower portion of the vacuum cleaner body, and the vacuum cleaner is exhausted from the electric blower. A levitation device for levitating the main body from the floor surface, the levitation device having a communication port communicating with the electric motor chamber at the upper portion, a plurality of levitation exhaust outlets at the lower portion, an exhaust pressure equalizing chamber for storing the exhaust, and A floating body provided with a plurality of floating exhaust ports, and the floating bodyIt is detachably attached to the periphery of the floor and one end is bent inward to contact the floorA skirt member made of a soft material, and the floating exhaust outlet is opened toward the bent portion of the skirt member.
[0013]
  Further, the electric vacuum cleaner according to the present invention is provided with a vacuum cleaner body having an electric motor chamber in which a dust collection chamber and an electric blower are housed, and a lower portion of the vacuum cleaner body, and the vacuum cleaner is exhausted from the electric blower. A levitation device for levitating the main body from the floor,The bottom plate of the motor chamber is provided with a motor chamber exhaust hole, the bottom plate of the cleaner body is provided with a bottom plate exhaust hole communicating with the motor chamber exhaust port, the levitation device is provided on the top plate, and the bottom plate exhaust hole is provided on the top plate. A floating body provided with a plurality of floating exhaust outlets at the lower portion of the upper plate, an exhaust pressure equalizing chamber for storing the exhaust, and a plurality of floating exhaust ports opened to the upper plate; A skirt member which is attached to the periphery of the floating body and is bent inward at one end so as to contact the floor surface and whose outer surface is made of a soft material having abrasion resistance or slip resistance; Opened to the bent part of the skirt memberIs.
[0014]
  An opening / closing valve was provided in the motor chamber exhaust hole.
[0015]
  Of the above skirt memberProvided inside the inner edgeThe opening area of the levitation air outlet is substantially equal to or larger than the area of the bent part of the skirt member.
  In addition, the skirt memberBottomWas at least a double structure.
  In addition, the skirt memberInside the inner edgeA number of levitation outlets were provided.
[0016]
An exhaust pressure sensor for detecting the exhaust pressure is provided in the above-described levitation device, and the amount of exhaust gas flowing into the levitation device is controlled based on the detection result of the exhaust pressure sensor.
Moreover, the exhaust from the above-described levitation device was merged with the exhaust that cooled the motor of the electric blower.
[0017]
  Any one of the above floating devices is configured to be detachable from the cleaner body, or the pressure equalizing body of the above floating device is configured integrally with the cleaner body.
  Also, any of the aboveIn a position where it does not interfere with the floating exhaust outlet of the bottom plate of the floating deviceRibs for forming a gap between the bent portion of the skirt member were provided.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
1 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a rear view of FIG. 1, FIG. 3 is a bottom view of FIG. 1, and FIG. FIG.
In the figure, reference numeral 1 denotes a vacuum cleaner main body, a front plate 2 having a hose connection port 3, a rear plate 4, left and right side plates 5a and 5b, a bottom plate 6, and a fan intake hole provided in a substantially middle portion in the front-rear direction. 8 and a top plate 9 provided on the rear side of the main partition wall 7, the upper part of the front side of the main partition wall 7 is formed in a substantially box shape.
[0019]
Reference numeral 11 denotes a dust collection chamber formed between the front plate 2 and the main partition wall 7. Inside the dust collection chamber 11, for example, a dust collection means comprising a detachable dust bag or a cyclone dust collector (hereinafter referred to as these). The dust collector 12 is collectively stored, and an opening / closing lid 10 is provided at the upper opening.
Reference numeral 14 denotes an electric motor chamber formed between the main partition wall 7 and a partition wall 16 provided behind the main partition wall 7, and an electric blower 15 is accommodated therein. Reference numeral 18 denotes a cord reel chamber formed between the partition wall 16 and a partition wall 17 provided behind the partition wall 16 and accommodates a cord reel 19. Reference numeral 13 denotes a bottom plate of the motor chamber 14 and the cord reel chamber 18.
[0020]
Reference numeral 20 denotes a lower exhaust passage formed between the bottom plate 6 and the bottom plate 13 having a vent hole 20a. Reference numeral 21 denotes a narrow U-shaped cross section, and a gap between the upper end plate 9 and the upper end portion. A partition member is provided on the bottom plate 6 at a substantially central portion of the rear plate 4 with a rear exhaust passage 22 formed between the rear plate 4 and a lower portion between the partition plate 17 and the lower plate 17. An upper exhaust passage 23 communicating with the exhaust passage 20 is formed.
[0021]
24 is a bottom plate exhaust hole provided in the bottom plate 6 in the vicinity of the main partition wall 7, 25 a is a bottom plate exhaust port provided in the bottom plate 6 and opened in the rear exhaust passage 22, and 25 b is a bottom plate in the vicinity of the front plate 2. 6 is a bottom plate exhaust port (hereinafter referred to collectively as a bottom plate exhaust port 25) that opens in the dust collection front chamber 11a.
27 is an electric motor chamber exhaust hole provided in the bottom plate 13 of the electric motor chamber 14 above the bottom plate exhaust hole 24, and 28 is an opening / closing valve for opening and closing the electric conductor chamber exhaust hole 27 and the vent 20a of the lower exhaust passage 20. For example, it is controlled by a stepping motor or an electromagnetic force plunger. In addition, the convex part 59a mentioned later may be formed in the front-end | tip part of the communication port 59, and the vent hole 20a may be opened and closed by this convex part 59a.
29 is a main body floating exhaust port provided slightly above the central portion of the rear plate 4 and communicates with the rear exhaust passage 22, and 30 are a plurality of main body exhaust ports provided in the rear plate 4 on both sides of the partition member 21.
[0022]
Reference numeral 31 denotes a cover mounted on the upper surface plate 9 of the vacuum cleaner main body 1, and a control chamber 32 is formed inside, and a control unit made of a substrate on which a number of electrical components are mounted and a control circuit and the like are formed. 33 is accommodated. Reference numerals 34 and 35 denote exhaust holes provided in the partition walls 16 and 17, respectively. 36 is an exhaust hole provided in the upper surface plate 9 to communicate the motor chamber 14 and the control chamber 32, and 37 is an exhaust hole provided in the upper surface plate 9 to communicate the rear exhaust passage 22 and the upper exhaust passage 23 and the control chamber 32. , 38 are control chamber exhaust ports provided on the rear wall of the cover 31. Reference numeral 39 denotes an engagement concave portion (or engagement convex portion, the same applies hereinafter) provided on the lower outer surface of the front plate 2 and the rear plate 4.
[0023]
Reference numeral 40 denotes a connection body provided at one end of a hose (not shown) and connected to the connection port 3 provided on the front plate 2. The connection body includes an inner tube 41 and an outer tube 42, and the inner tube 41 extends from the outer tube 42. It protrudes and opens in the dust collector 12 of the dust chamber 11. 43 is provided in the inner pipe 41 and contacts, for example, a mounting plate of the dust collector 12 provided in the dust chamber 11 to prevent the dust in the dust collector 12 from flowing into the dust chamber 11. It is an annular sealing material. 44 is a reflux port provided in the inner pipe 41 and opened to the dust collecting front chamber 11a, 45 is an outer pipe exhaust port provided in the outer pipe 42 and opened to the outside of the machine, and 45a is a tip of a hose (not shown). It is a recirculation | air flow path connected to the suction tool for floors formed in this.
[0024]
Reference numeral 50 denotes a floating device, which includes a floating body 51, a skirt member 70 attached to the floating body 51, and a skirt stopper 75 for detachably fixing the skirt member 70 to the floating body 51.
The floating body 51 has a main body portion 52 whose upper portion is substantially the same shape as the outer diameter of the bottom portion of the vacuum cleaner main body 1 and whose lower portion is slightly reduced via a step portion 53. The inner wall has an engaging convex portion (or engaging concave portion, the same applies hereinafter) 56 that engages with an engaging concave portion 39 provided on the front plate 2 of the cleaner body 1 and is provided with a detachable handle 54 that is inclined outward. In the upper part on the rear side, an engagement piece 55 having an engagement recess 56 that engages with an engagement recess 39 provided on the rear plate 4 of the cleaner body 1 is provided on the inner wall.
[0025]
The upper portion of the main body 52 is closed by an upper plate 57, and a bottom plate 58 is provided at a lower portion of the upper plate 57 at a predetermined interval. Reference numeral 59 denotes a cylindrical communication port provided in the upper plate 57 corresponding to the bottom plate exhaust hole 24 provided in the bottom plate 6 of the cleaner body 1. Reference numeral 60 denotes a peripheral wall standing on the bottom plate 58 at the outer periphery thereof with the communication port 59 substantially in the center, and an exhaust pressure equalizing chamber 61 is formed inside the communication port 59, and the communication port 59 is formed in the exhaust pressure equalizing chamber 61. It is open. A gap g is formed between the upper end of the peripheral wall 60 and the upper plate 57, and the opening area B of the gap g is substantially equal to or slightly smaller than the opening area A of the communication port 59, and A ≧ B It has become.
[0026]
In the vicinity of the outer periphery of the main body 52, 62 is a plurality of floating exhaust openings that communicate with the upper plate 57 and the bottom plate 58 and opens up and down. It is a floating exhaust outlet. In addition, the opening area C of one of the floating air exhaust outlets 63 is smaller than the opening area A of the communication port 59 and is formed as A> C. Reference numeral 64 denotes a plurality of engaging concave portions (or engaging convex portions, the same applies hereinafter) provided on the outer wall surface of the main body portion 52. Reference numeral 65 is a mark for positioning when the skirt member 70 is set, provided on the bottom plate 58 inside the floating exhaust outlet 63.
[0027]
Reference numeral 70 denotes a skirt member formed by a sheet material 71 made of a soft material having wear resistance and slip resistance, for example. The sheet material 71 corresponds to the shape of the bottom portion of the main body 52 of the floating body 51 and has an outer edge larger than the outer shape. And is formed endlessly in a strip shape having an inner edge substantially equal to the mark 65 provided on the bottom plate 58 of the main body 52, and a floating exhaust port 72 is formed inside the inner edge. Needless to say, if the outer surface of the sheet material 71 is subjected to a coating treatment in order to obtain wear resistance and slip resistance, it will be further improved.
[0028]
As shown in FIG. 5A, for example, the inner edge portion of the sheet material 71 of the skirt member 70 is bent inwardly or outwardly to form a folded portion 73, and ends thereof are joined by welding, adhesion 74 or the like. Thus, the inner edge portion of the sheet material 71 is made heavy to enhance the effect of contact with the floor surface, which will be described later, and the wear resistance is improved.
FIG. 5B shows a case where a weight 73a, such as a wire, is inserted into the folded portion 73 of the skirt member 70 to increase its weight, thereby further enhancing the contact effect on the floor surface.
[0029]
FIG. 5C shows a U-shaped soft material 73b with excellent wear resistance attached to the inner edge of the sheet material 71 and integrally joined thereto by welding, adhesion 74, or the like.
FIG. 5D shows an example in which two or more sheet materials 71a and 71b are overlapped at least in the vicinity of the inner edge of the sheet material 71 and joined together by welding, adhesion 74, etc. In this case, FIG. As shown in e), for example, the outer sheet material 71a may be joined to be longer than the inner sheet material 71b, and the outer sheet material 71a may be brought into contact with the floor surface. By forming in this way, for example, it is possible to improve the sealing performance against unevenness on the floor surface. The inner edge portion of the sheet material 71 can be bent and variously configured as described above, but in the following description, these are collectively referred to as a folded portion 73.
[0030]
Reference numeral 75 denotes a skirt stopper which has an inner shape corresponding to the outer shape of the reduced portion of the main body 52 of the floating body 51, and is a skirt stopper formed on the inner wall surface of the main body 52 of the floating body 51. A plurality of engaging convex portions (or engaging concave portions, hereinafter the same) 76 that engage with the mating concave portion 64 are provided. Reference numeral 77 denotes a sled portion (bumper) provided on the front side.
Reference numeral 79 denotes a dust collection filter that collects dust or the like on the floor surface disposed in the exhaust chamber 78 formed between the bottom plate 6 of the cleaner body 1 and the upper plate 57 of the floating body 51. .
[0031]
Next, an example of a procedure for attaching the levitation device 50 including the above parts to the cleaner body 1 will be described.
First, as shown in FIG. 4, the levitated body 51 is placed on a jig or the like upside down. Next, the skirt member 70 is placed on the bottom plate 58 of the floating body 51, and the floating air outlet 72 is aligned with the mark 65 provided on the bottom plate 58.
[0032]
In this state, the skirt stopper 75 is placed on the skirt member 70, and the sheet material 71 of the skirt member 70 is sandwiched between the main body 52 of the floating body 51 and the skirt stopper 75, and the step 53 is Reduce until contacted. As a result, the engaging convex portion 76 provided on the inner wall surface of the skirt stopper 75 engages with the engaging concave portion 64 provided on the main body portion 52, and the floating body 51, the skirt member 70, and the skirt stopper 75 are integrated. Combined. At this time, the vicinity of the inner edge portion of the sheet material 71 of the skirt member 70 is folded inward along the bottom plate 58 of the floating body 51 and through the bottom plate 58 and a predetermined gap, and the state shown in FIG. 1 is obtained.
[0033]
In this state, the opening area D of the floating air discharge path 72 of the skirt member 70 is substantially equal to or slightly larger than the area E of the bent portion of the sheet material 71 (the portion inside the main body portion 52 of the floating body 51). Thus, D ≧ E is formed.
Further, the floating exhaust outlet 63 provided on the bottom plate 58 of the floating body 51 opens to face the bent portion of the skirt member 70.
[0034]
Next, a dust collection filter 79 is disposed on the upper plate 57 of the floating body 51 so that the inner side of the stepped portion 53 of the floating body 51 is brought into contact with the bottom of the cleaner body 1. And if the engagement convex part 56 provided in the attachment / detachment handle 54 and the engagement piece 55 of the floating body 51 is engaged with the engagement concave part 39 provided in the cleaner main body 1, the levitating device 50 will be the bottom part of the cleaner main body 1. Are integrally coupled to each other.
At this time, the communication port 59 provided in the floating body 51 communicates with the bottom plate exhaust hole 24 provided in the bottom plate 6 of the cleaner body 1, and the bottom plate exhaust port 25 communicates with the bottom plate 6 and the floating body 51. It opens to an exhaust chamber 78 formed between the upper plate 57.
[0035]
The procedure for attaching the levitation device 50 to the cleaner body 1 has been described above. However, the present invention is not limited to this. For example, the levitation body 51 is attached to the cleaner body 1 and then the skirt member 70 and the skirt stopper 75 are attached. These can be changed as appropriate, for example, by attaching them sequentially.
[0036]
Next, the operation of the electric vacuum cleaner according to the present embodiment configured as described above will be described.
First, a hose connection body 40 having a floor suction tool (not shown) attached directly or through a pipe to the tip is connected to the connection port 3 of the cleaner body 1 and arranged in the dust collection chamber 11. The inner pipe 41 is inserted into the dust collector 12 provided.
Further, the cord is pulled out from the cord reel 19 and connected to the power source. If the electric blower 15 is driven by turning on the power switch provided in the hose or the like, the dust sucked from the floor suction tool is collected by the dust collector 12 through the hose and the connection tool 40, and the air is The electric blower 15 is guided from the fan intake hole 8 of the main partition wall 7 to cool the electric blower 15.
[0037]
The air that has cooled the electric blower 15 is given pressure (outside air P_OHigher P_M) And is discharged from the discharge port 15a to the electric motor chamber 14, and a part thereof passes through the exhaust hole 34, the cord reel chamber 18, the exhaust hole 35, and the upper exhaust passage 23, from the main body exhaust port 30 provided in the rear plate 4. The cord reel 19 is cooled while being discharged out of the machine. Further, a part of the exhaust is sent to the control chamber 32 through the exhaust hole 36, and the control unit 33 is cooled and discharged from the control chamber exhaust port 38 to the outside.
[0038]
However, most of the exhaust is discharged from the motor chamber exhaust hole 27 provided in the bottom plate 13 of the motor chamber 14 to the exhaust pressure equalizing chamber 61 through the communication port 59. As described above, the opening area A of the communication port 59 and the opening area B of the gap g between the upper end portion of the peripheral wall 60 of the exhaust pressure equalizing chamber 61 and the upper plate 57 are set as A ≧ B. Wind velocity V and pressure P flowing into the exhaust pressure equalizing chamber 61_MThe exhaust air of V is from V to v and the pressure is P_MTo p, the exhaust gas in the exhaust pressure equalizing chamber 61 is changed from dynamic pressure to static pressure and uniformized. Then, the air is discharged from a plurality of floating exhaust outlets 63 provided on the bottom plate 58 of the pressure equalizing body 51 through the gap g, and sprayed to the bent portion of the sheet material 71 of the skirt member 70 (hereinafter referred to as the bent portion of the skirt member 70). It is done.
[0039]
As a result, the bent portion of the skirt member 70 is pressed against the floor surface with a strong exhaust pressure and is kept airtight, so that the floating space 80 formed between the floor surface and the bottom plate 58 of the pressure equalizing body 51 is in the floating space 80. Is the external pressure P_OHigher pressure P_MThe exhaust is full. As a result, the levitation device 50 excluding the bent portion of the skirt member 70 and the cleaner main body 1 (hereinafter simply referred to as the cleaner main body 1) coupled to the levitation device 50 float substantially horizontally from the floor surface. At this time, the folded portion 73 of the skirt member 70 is in contact with the floor surface. If the floating exhaust outlet 63 is opened obliquely toward the outside, the exhaust can be reliably blown and spread to the bent portion of the skirt member 70, so that the adhesion effect to the floor surface can be further enhanced. it can.
[0040]
In this case, when the exhaust of the electric blower 15 is blown directly onto the floor surface from the motor chamber exhaust hole 27, not only the dust on the floor rises but also the lift of the cleaner body 1 becomes unbalanced and tilts. In the present embodiment, the exhaust from the electric blower 15 is once discharged into the exhaust pressure equalizing chamber 61, and the staticized exhaust is discharged from the floating exhaust outlet 63 provided around the exhaust pressure equalizing chamber 61 to the floor surface (skirt member). 70), not only the dust on the floor does not rise, but also the vacuum cleaner body 1 can be floated almost horizontally in a well-balanced manner.
[0041]
On the other hand, the exhaust in the floating space 80 is sent to the exhaust chamber 78 from the plurality of floating exhaust ports 62 and filtered by the dust collecting filter 79, and a part of the exhaust is provided on the bottom plate 6 of the cleaner body 1. From the bottom plate exhaust port 25a through the rear exhaust air passage 22 and discharged from the main body floating exhaust port 29 to the outside of the machine, and from the control chamber discharge port 38 through the exhaust hole 37 and the control chamber 32 provided in the top plate 9. Exhaust pressure P discharged to the outside and in the floating space 80_MIs kept almost constant.
Further, the exhaust gas in the exhaust chamber 78 filtered by the dust collection filter 79 passes through the bottom plate exhaust port 25 b provided in the bottom plate 6 of the cleaner body 1, and the dust collection chamber 11 a and the inner pipe 41 of the connector 40. The dust collector 12 is discharged from the outer pipe exhaust port 45 through the space between the outer pipes 42, and led to the inner pipe 41 through the circulation port 44 of the inner pipe 41 and together with the air in the suctioned hose. It is sucked in and circulates.
[0042]
Here, the exhaust gas in the levitation space 80 can be reliably led to the exhaust chamber 78 by circulating the exhaust gas in the levitation space 80 from the circulation port 44 provided in the connecting body 40 to the dust collection chamber 11. It is possible to more reliably prevent the exhaust in the space 80 from flowing out between the bent portion of the skirt member 70 and the floor surface, thereby preventing dust from flying into the room, and clean the room. Can keep.
Further, the outer pipe 42 of the connection body 40 is extended to the floor suction tool through the hose by omitting the outer pipe exhaust port 45, exhausted to the floor surface and sucked together with dust, and returned to the dust collecting chamber 11. You may make it make it.
[0043]
By the way, when the floor surface to be cleaned is flooring, the exhaust gas blown out from the floating exhaust air outlet 63 securely keeps the bent portion of the skirt member 70 in close contact with the floor surface to maintain the pressure in the floating space 80. 1 can be lifted reliably. In this case, the opening of the motor chamber exhaust hole 27 is slightly reduced by the on-off valve 28 as necessary, and the vent 20a of the lower exhaust passage 20 is slightly opened to discharge a part of the exhaust to the outside. The flying height of the machine main body 1 may be kept constant.
[0044]
Further, when the floor surface is a carpet, the skirt member 70 is less likely to adhere to the floor surface, so a part of the exhaust leaks into the room from below the bent portion of the skirt member 70 and the pressure in the floating space 80 decreases. The vacuum cleaner body 1 may not be sufficiently lifted. In such a case, the opening area of the motor chamber exhaust hole 27 is increased by the opening / closing valve 28 as necessary, and the opening area of the vent hole 20a of the lower exhaust vent passage 20 is reduced or blocked to increase the floating space 80. By raising the internal pressure and pressing the bent portion of the skirt member 70 onto the carpet so as to block or reduce as much as possible the exhaust leaking into the room, it is possible to keep the vacuum cleaner main body 1 ascending.
[0045]
As described above, according to the present embodiment, the exhaust gas exhausted from the exhaust pressure equalizing chamber 61 through the floating exhaust outlet 63 into the floating space 80 has substantially the same amount of exhaust as the floating exhaust port 62 and the exhaust chamber 78. Since the air is exhausted to the outside of the apparatus through the exhaust port 25 or the like, or part of the air is circulated,_OHigher, almost constant pressure P_MTherefore, the levitation of the cleaner main body 1 can be stably held horizontally at a substantially constant height, and the cleaner main body 1 can be moved lightly and easily.
[0046]
In this case, as described above, the opening area D of the floating exhaust path 72 of the skirt member 70 is formed to be approximately equal to or slightly larger than the area E of the bent portion of the sheet material 71. In movement, the sheet material 71 has little resistance to the floor surface and can be moved smoothly. When the cleaner body 1 is moved, a sledge 77 is provided on the front side of the skirt stopper 75, so that it is easy to get over the sill and the like, and the cleaner body 1 and the floating device 50 are obstructed. It can be protected from things.
[0047]
Next, the case where the cleaner body 1 is moved by wheels instead of the levitation device 50 will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same part as FIG. 1, and it abbreviate | omits.
In FIG. 6, reference numeral 81 denotes a wheel member, which is formed in substantially the same shape as the bottom of the cleaner body 1, and engaging recesses provided in the front and rear plates 2 and 4 of the cleaner body 1 on the inner wall surface in the front and rear. 39 has a base 82 provided with locking pieces 83 and 84 having engaging convex parts 85 (or engaging concave parts, hereinafter the same), and wheels 86 are provided on both sides of the rear part of the base 82. A caster 87 is detachably attached to the central portion on the front side.
[0048]
In order to attach the wheel member 81 to the cleaner body 1, first, the levitation device 50 is removed from the cleaner body 1, and the base 82 of the wheel member 81 is brought into contact with the bottom of the cleaner body 1 to lock the wheel member 81. What is necessary is just to engage the engagement convex part 85 of the piece 83,84 with the engagement recessed part 39 of the cleaner body 1. FIG.
According to this example, the levitation device 50 or the wheel member 81 can be easily attached to the cleaner body 1 as necessary, and can be easily replaced when the skirt member 70 becomes dirty or damaged. You can get a good vacuum cleaner. In FIG. 1, wheels 86 and casters 87 may be provided directly on the levitation device 50, and the wheels 86 and casters 87 may float from the floor surface only when the electric blower 15 is operating.
[0049]
[Embodiment 2]
FIG. 7 is a longitudinal sectional view of the vacuum cleaner body of the electric vacuum cleaner according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the exhaust air path and the drive power supply of the electric blower in the first embodiment are changed.
[0050]
In FIG. 7, reference numeral 90 denotes a rechargeable battery chamber provided on the rear side of the partition wall 16 of the motor chamber 14, and a rechargeable battery 91 is installed therein. Reference numeral 22 denotes a rear exhaust passage formed between the partition wall 17 and the rear plate 4 of the rechargeable battery chamber 90, and a lower portion is connected to the exhaust chamber 78 via the lower exhaust passage 20 and the bottom plate exhaust port 25 provided in the bottom plate 6. The upper part communicates with the control chamber 32 through a vent 37 a provided in the upper surface plate 9. Reference numeral 88 denotes a second opening / closing valve for controlling the opening degree of the bottom plate exhaust port 25. Similarly to the opening / closing valve 28, the opening area is controlled by a stepping motor or the like to adjust the amount of exhaust discharged outside the apparatus. . Reference numeral 89 denotes a connection portion of a charging power source for the rechargeable battery 91 provided on the rear wall of the control room 32.
Reference numeral 40 denotes a connection body connected to one end of the hose and connected to the connection port 3 provided on the front plate 2 of the cleaner body 1, and the tip of the connection body projects into the dust collector 12.
[0051]
In the present embodiment, when the power switch provided on the hose or the like is turned on, the electric blower 15 is energized from the rechargeable battery 91 to drive it, and the dust on the floor surface is sucked in the same manner as in the first embodiment. The air is collected in the dust collector 12, and the air is filtered by the dust collector 12 and sucked into the electric blower 15 to cool it.
Further, the operation of discharging the exhaust discharged from the electric blower 15 to the levitation device 50 to equalize the pressure and lift the cleaner body 1 is the same as in the first embodiment.
[0052]
Exhaust air from the floating space 80 flows into the exhaust chamber 78 from the floating exhaust port 62 and is filtered by the dust collecting filter 79, and is then guided to the rear exhaust passage 22 from the bottom plate exhaust port 25 provided on the rear side. The main body exhaust port 30 provided in the rear plate 4 is discharged outside the machine. If necessary, as described in the first embodiment, the levitation device 50 may be replaced with the wheel member 81 and the cleaner main body 1 may be moved using the wheels, or the wheels 86 and The caster 87 may be provided in the lower part of the cleaner body 1 and may be lifted from the floor surface only when the electric blower 15 is operated.
[0053]
According to the present embodiment, it is possible to obtain substantially the same effect as in the case of the first embodiment. Further, it is not necessary to pull out the cord and connect it to a commercial power source each time it is used, and a commercial power source is provided. Since it can be used even in places where it is not used, a convenient vacuum cleaner can be obtained. The charging state of the rechargeable battery 91 is displayed on, for example, a display provided on the vacuum cleaner main body 1 or the hose, and when the amount of charged electricity is reduced, a charging power source is connected to the connecting portion 89 provided in the control room 32. Connect and charge. The rechargeable battery 91 may be housed anywhere in the cleaner body 1 as long as it is above the floating body 50.
[0054]
[Embodiment 3]
FIG. 8 is an explanatory view showing the main part of the vacuum cleaner body of the electric vacuum cleaner according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1 or 2, and description is abbreviate | omitted.
As described above, the degree of adhesion of the skirt member 70 to the floor surface due to exhaust differs depending on the state of the floor surface to be cleaned (flooring, carpet, tatami, etc.), so the exhaust pressure in the floating space 80 is different. When the floor is a carpet, the vacuum cleaner main body 1 may not be sufficiently lifted due to the length or amount of the hair. Therefore, the opening / closing valve 28 adjusts the opening degree of the motor chamber exhaust hole 27 and the vent hole 20a of the lower exhaust passage 20 so that the lift of the cleaner body 1 becomes substantially constant regardless of the state of the floor surface. .
In the present embodiment, the interior of the floating space 80 is always maintained at a predetermined pressure so that the cleaner body 1 floats at a predetermined height and is held at this height position.
[0055]
In FIG. 8, 92 is an exhaust pressure sensor installed in the exhaust chamber 78. As shown in FIG. 10, a power switch 93, an exhaust pressure sensor 92, and a driving means 94 such as a stepping motor SM are connected in series to a power source 93. The electric blower 15 and the control unit 33 are connected in parallel to the power source 93. The exhaust pressure sensor 92 constantly detects the exhaust pressure in the exhaust chamber 78 and transmits the detection signal to the control unit 33.
[0056]
When the floor surface is flooring, for example, and the pressure in the exhaust chamber 78 is high, the control unit 33 sends a control signal to the drive means 94 to rotate the on-off valve 28 counterclockwise to open the motor chamber exhaust hole 27. While reducing the area, a part of the vent 20a of the lower exhaust passage 20 is opened, and a part of the exhaust is discharged from the lower exhaust passage 20 through the rear exhaust passage 22 to the outside of the machine. The vacuum cleaner main body 1 that has been lowered and floated is held at a predetermined height position.
[0057]
In addition, since the floor surface is, for example, carpet and part of the exhaust leaks from the bottom of the skirt member 70 into the room, when the pressure in the floating space 80 is low and the cleaner body 1 does not sufficiently float, the control unit 33 can Based on the detection signal of the exhaust pressure sensor 92 in 78, a control signal is sent to the drive means 94, and as shown in FIG. 9, the opening / closing valve 28 is rotated in the clockwise direction to increase the opening area of the motor chamber exhaust hole 27. While increasing the size, the opening area of the vent hole 20a of the exhaust passage 20 is reduced or closed, and more exhaust gas is sent to the exhaust pressure equalizing chamber 61, and high-pressure exhaust gas is sent from the floating exhaust air outlet 63 to the skirt member 70. The cleaner is sprayed onto the bent portion to strongly press the bent portion against the floor surface, and the pressure in the floating space 80 is increased to raise the cleaner body 1 to a predetermined height.
[0058]
In the above description, based on the detection result of the exhaust pressure sensor 92, the opening / closing valve 28 provided in the motor chamber exhaust hole 27 is controlled to adjust the opening degree of the motor chamber, the exhaust chamber 27, and the exhaust port 20a of the exhaust passage 20. In the above description, the pressure in the floating space 80 is controlled to lift the cleaner main body 1 to a substantially constant height position. However, the on-off valve 28 is omitted, and the exhaust pressure sensor 92 is controlled as shown in FIG. The control unit 33 that has received the detection signal may send a control signal based on the detection signal to the electric blower 15 to control the output of the electric blower 15 to adjust the exhaust pressure.
[0059]
In the above description, the exhaust pressure sensor 92 is installed in the exhaust chamber 78. However, the exhaust sensor 92 directly or indirectly controls the pressure in the floating space 80, such as in the exhaust pressure equalizing chamber 61 or the floating space 80. As long as the position can be measured automatically, it may be provided at another location.
According to the present embodiment, the pressure in the floating space 80 is automatically adjusted in accordance with the state of the floor surface, and the cleaner body 1 is always lifted to a substantially constant height. An easy-to-use vacuum cleaner can be obtained.
[0060]
[Embodiment 4]
FIG. 12 is a longitudinal sectional view of a vacuum cleaner main body of the electric vacuum cleaner according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to this same part as Embodiment 1 or 2, and one part description is abbreviate | omitted.
In FIG. 12, 51 a is a floating body having substantially the same structure as the floating body 51 of the floating device 50 described in the first and second embodiments, and is integrally formed on the bottom of the cleaner body 1. An exhaust chamber 78 is formed between the bottom plate 6 and the upper plate 57 of the floating body 51a, and an exhaust pressure equalizing chamber 61 is formed between the upper plate 57 and the bottom plate 58. A communication port 59 is provided between the bottom plate 6 and the upper plate 57 in the vicinity of the partition wall 7 to communicate the motor chamber 14 and the exhaust pressure equalizing chamber 61. And the skirt member 70 is attached to the levitated body 51a by the skirt stopper 75 similarly to the case of Embodiment 1, 2, and the levitating apparatus 50 is comprised by these.
[0061]
Reference numeral 40 denotes a hose connection body connected to the connection port 3 provided on the front plate 2, and is open in the dust collector 12. The front plate 2 is provided with a plurality of front exhaust ports 2a. Reference numeral 86 denotes wheels provided on both sides of the rear portion of the cleaner body 1, and 31 a denotes a main body handle provided in the control chamber 32.
[0062]
In the present embodiment configured as described above, the exhaust in the motor chamber 14 is discharged from the communication port 59 into the exhaust pressure equalizing chamber 61 to be equalized, blown out from the floating exhaust outlet 63, and the skirt member The bent portion of 70 is pressure-bonded to the floor surface, the exhaust space 80 is filled with exhaust, and the cleaner body 1 is lifted.
The exhaust in the floating space 80 flows into the exhaust chamber 78 from the floating exhaust port 62 provided on the rear side of the floating body 51a, and the bottom plate exhaust provided on the front side of the bottom plate 6 of the cleaner body 1. The air is discharged from the front exhaust port 2a through the dust collection front chamber 11a through the port 25.
[0063]
In the above description, the case where the exhaust is discharged from the front exhaust port 2a provided in the front plate 2 is shown. However, the front exhaust port 2a is omitted, and the floating exhaust port 62 is placed on the front side of the floating body 51a. At the same time, a bottom plate exhaust port 25 may be provided on the rear side of the bottom plate 6 so that exhaust is discharged from the main body exhaust port 30 provided on the rear plate 4 to the outside of the machine.
[0064]
According to the present embodiment, since the levitated body 51a is formed integrally with the cleaner body 1, the levitating device 50 can be easily set. Further, since the wheel 86 is provided on the rear side of the cleaner body 1, when cleaning is not performed, the wheel 86 can be moved freely by lifting and pulling the front side of the cleaner body 1 with a hose. Can do. As a matter of course, the wheel 86 is not in contact with the floor surface when the cleaner body 1 is lifted.
[0065]
[Embodiment 5]
FIG. 13: is a longitudinal cross-sectional view of the vacuum cleaner main body of the vacuum cleaner concerning Embodiment 5 of this invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1-4, and description is abbreviate | omitted.
In the figure, 51a is a floating body integrally formed at the bottom of the cleaner body 1, and an exhaust chamber 78 is formed between the bottom plate 6 of the cleaner body 1 and the upper plate 57 of the floating body 51a. The peripheral wall is provided with a plurality of floating body exhaust ports 30a.
[0066]
In addition, a bottom plate 58 is provided at the lower portion of the upper plate 57, and an exhaust ventilation path 61a is formed between the bottom plate 58 and the outer periphery of the bottom plate 58, and a plurality of floating exhaust outlets inclined obliquely outward. 63 is provided. Reference numeral 62 denotes a plurality of floating exhaust ports provided in the upper plate 57 in the vicinity of the peripheral wall of the floating body 51a.
A skirt member 70 is detachably attached to the peripheral wall of the floating body 51a by a skirt stopper 75 fixed to the peripheral wall of the cleaner body 1. Reference numeral 75 a denotes a plurality of skirt stopper exhaust ports provided in the skirt stopper 75 corresponding to the floating body exhaust ports 30 a provided in the exhaust chamber 78.
[0067]
In the present embodiment configured as described above, the exhaust from the electric blower 15 is discharged from the communication port 59 into the exhaust ventilation path 61a, blown out from the floating exhaust outlet 63, and the bent portion of the skirt member 70 is bent. The vacuum cleaner main body 1 is lifted by press-fitting to the floor surface and filling the floating space 80 with the exhaust having a pressure higher than the external pressure.
[0068]
The exhaust in the levitation space 80 flows into the exhaust chamber 78 from the levitation exhaust port 62 provided in the upper plate 57, and is discharged to the outside through the levitation body exhaust port 30a and the skirt stopper discharge port 75a. The pressure in the space 80 is maintained almost constant.
According to the present embodiment, since the levitated body 51a is formed integrally with the cleaner body 1, the levitating device 50 can be easily set.
[0069]
[Embodiment 6]
FIG. 14 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 6 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1-5, and description is abbreviate | omitted.
51 a is a floating body that is integrated with the bottom of the vacuum cleaner body 1 and whose peripheral wall is located slightly inside the peripheral wall of the vacuum cleaner body 1, and is below the bottom plate 6 of the vacuum cleaner body 1. A bottom plate 58 that is curved upward from the center toward the outer periphery and whose peripheral wall is formed obliquely outward is provided, and an exhaust pressure equalizing chamber 61 is formed between the bottom plate 6 and the vacuum cleaner body 1. Has been. Between the peripheral wall and the peripheral wall of the levitated body 51a, a plurality of levitated exhaust outlets 63 inclined obliquely outward are provided.
[0070]
61b is a substantially inverted L-shaped second peripheral wall projecting outward from a substantially central portion in the vertical direction of the peripheral wall of the levitated body 51a, and a plurality of levitating exhaust ports 62 communicating with the levitating space 80 are formed in the horizontal portion. Is provided. The skirt member 70 has a plurality of skirt member exhaust ports 75a, and is detachably attached to the second peripheral wall 61b by a skirt stopper 75 fixed to the cleaner body 1.
[0071]
In the present embodiment configured as described above, the exhaust from the electric blower 15 is discharged from the communication port 59 into the exhaust pressure equalizing chamber 61 to be equalized, and blown out from the floating exhaust outlet 63 to be a skirt member. The bent portion of 70 is crimped to the floor surface, and the exhaust space 80 is filled with exhaust gas having a pressure higher than the outside air pressure, so that the cleaner body 1 is lifted.
[0072]
Exhaust air in the floating space 80 is discharged to the outside from the floating exhaust port 62 provided in the second peripheral wall 61b and the skirt stopper discharge port 75a provided in the skirt stopper 75, and the pressure in the floating space 80 is reduced. Keep almost constant.
According to the present embodiment, since the levitated body 51a is formed integrally with the cleaner body 1, the levitating device 50 can be easily set.
[0073]
[Embodiment 7]
FIG. 15 is a partial cross-sectional view of the vacuum cleaner body of the electric vacuum cleaner according to Embodiment 7 of the present invention. In addition, the same code | symbol as this is attached | subjected to the same part as Embodiment 1-6, and description is abbreviate | omitted.
In the present embodiment, the levitated body 51a of the levitating device 50 is integrally formed with the lower portion of the cleaner body 1, and an exhaust ventilation path 61a is formed between the bottom plate 6 and the bottom plate 58, and the outer periphery thereof is formed on the outer periphery thereof. A plurality of floating exhaust outlets 63 are provided. A floating body exhaust port 30a is provided on the peripheral wall of the floating body 51a at the upper part of the floating exhaust exhaust port 62 provided on the outer periphery of the exhaust ventilation path 61a, and communicated with the skirt stopper exhaust port 75a provided on the skirt stopper 75. It is a thing.
[0074]
In the present embodiment, the exhaust from the electric motor chamber 14 is discharged from the bottom plate exhaust port 24 provided in the bottom plate 6 of the cleaner body 1 to the exhaust vent 61a, and the wind speed V and pressure P_MIs slightly lowered and blown out from the floating exhaust outlet 63, and the bent portion of the skirt member 70 is pressure-bonded to the floor surface so that the exhaust space 80 is filled with exhaust gas having a pressure higher than the outside air, and the cleaner body 1 is lifted.
Then, the exhaust gas in the levitation space 80 is discharged from the levitation exhaust port 62 to the outside of the aircraft through the levitation body exhaust port 30a and the skirt stopper exhaust port 75a, and the pressure in the levitation space 80 is maintained almost constant.
[0075]
According to the present embodiment, the levitated body 51a is configured integrally with the cleaner body 1, and the exhaust gas in the electric motor chamber 14 is directly blown to the bent portion of the skirt member 70 through the exhaust passage 61a. The structure is simple and the levitation device 50 can be easily set.
[0076]
[Embodiment 8]
FIG. 16 is a longitudinal sectional view of a vacuum cleaner main body of a vacuum cleaner according to Embodiment 8 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1-7, and description is abbreviate | omitted.
In FIG. 16, reference numeral 15 denotes an electric blower housed in the electric motor chamber 14. In the present embodiment, the electric blower 15 is driven by the motor 95 and the dust suction that is driven by the motor 95 and sucks dust on the floor surface. A fan 96 and a cooling fan 97 for cooling the motor 95 are included.
[0077]
The dust suction fan 96 is accommodated in a dust suction fan casing 98 provided in the main partition wall 7 of the cleaner body 1 and installed on the rear side of the fan suction hole 8, and the cooling fan 97 is provided integrally with the motor 95. The cooling fan casing 99 is accommodated in the cooling fan casing 99, and the cooling fan 97 and the dust suction fan 96 are attached to the output shaft of the motor 95. Reference numeral 100 denotes a plurality of exhaust ports provided on the outer peripheral wall of the dust suction fan casing 98.
[0078]
In the present embodiment configured as described above, when the power switch is turned on and the motor 95 is driven, the dust suction fan 96 and the cooling fan 97 rotate simultaneously. Thereby, dust or the like on the floor surface is sucked from the floor suction tool, collected in the dust collector 12 through the hose, and the pressurized air is filtered by the dust collector 12 to enter the dust suction fan casing 98. Sucked. Then, the air is exhausted from the exhaust port 100, and blown from the bottom plate exhaust hole 24 provided in the bottom plate 6 of the cleaner body 1 through the exhaust vent 61 a toward the bent portion of the skirt member 70 from the floating exhaust outlet 63. The bent portion is crimped to the floor surface to fill the floating space 80. Thereby, the cleaner body 1 floats almost horizontally.
[0079]
Exhaust air in the floating space 80 is discharged from the plurality of floating exhaust ports 62 through the bottom plate exhaust port 25, from the rear exhaust air passage 22 through the filter 22a, and from the main body exhaust port 30 to the outside. Further, the air is discharged from the bottom plate exhaust port 25 through the dust collection front chamber 11a to the outside of the front plate exhaust port 2a, and the pressure in the floating space 80 is maintained substantially constant.
[0080]
On the other hand, the outside air sucked from the motor chamber intake port 36a through the control chamber intake port 38a and the control chamber 32 by the rotation of the cooling fan 97 flows into the motor chamber 14, and the motor 95 is cooled by the outside air. Exhaust gas flows from the motor exhaust port 95a through the exhaust port 35 of the partition wall 17 into the rear exhaust air passage 22, and is discharged from the main body exhaust port 30 to the outside through the filter 22a.
[0081]
According to the present embodiment, the electric blower 15 having the dust suction fan 96 and the cooling fan 97 is provided, and the exhaust for raising the cleaner body 1 uses the exhaust of the dust suction fan 96, and the motor 95 flows in by the cooling fan 97. Since the cooling is performed by the outside air, the high-temperature exhaust does not fill the floating space 80, and therefore, there is no possibility that the skirt member 70 is deteriorated by the high temperature, the floor surface is deformed or discolored. Further, if the exhaust from the levitation space 80 flows into the rear exhaust air passage 22, the temperature of the exhaust that has cooled the motor 95 can be lowered.
[0082]
[Embodiment 9]
FIG. 17 is a longitudinal sectional view of a vacuum cleaner main body of a vacuum cleaner according to Embodiment 9 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1-8, and description is abbreviate | omitted.
In FIG. 17, reference numeral 15 denotes an electric blower housed in the electric motor chamber 14, and a fan 101 is provided on the front side of the motor 95. Reference numeral 102 denotes a fan casing having a suction port at the center of the front wall and containing the fan 101. A partition wall 103 is provided on the inner side of the rear wall, and a plurality of exhaust ports are provided in the peripheral wall on the front side of the partition wall 103. 104 is provided. In addition, a plurality of branch exhaust ports 105 are provided on the outer periphery of the partition wall 103, and a vent hole 106 that opens to the motor 95 is provided in the center of the rear wall.
[0083]
In the present embodiment configured as described above, the exhaust sucked from the dust collecting chamber 11 by the fan 101 is guided into the fan casing 102 from the intake port, and the bottom exhaust hole 24 and the communication port 59 from the exhaust port 104. After flowing into the exhaust pressure equalizing chamber 61, the pressure is equalized in the exhaust pressure equalizing chamber 61, and then blown out from the floating exhaust outlet 63 toward the bent portion of the skirt member 70 and the floor surface to fill the floating space 80. To raise the vacuum cleaner body 1.
The exhaust gas in the levitation space 8 is sent to the pre-dust collection chamber 11a from the bottom plate exhaust port 25 via the levitation exhaust port 62 and the exhaust chamber 78, and is discharged out of the machine from the connecting body 40 made of a double pipe. It circulates through the floor suction tool and maintains the exhaust pressure in the floating space 80 substantially constant.
[0084]
On the other hand, a part of the exhaust in the fan casing 102 is taken into the motor 95 from the vent 106 through the diversion exhaust 105 provided in the partition wall 103, and after cooling the motor 95, the motor 95 is cooled into the motor chamber 14 from the motor exhaust 95a. Then, the air is exhausted through the exhaust port 34 and the cord reel chamber 18, filtered by the filter 22 a, and discharged from the main body exhaust port 30 to the outside of the machine. During this time, the cord reel 19 is cooled.
Note that the exhaust for raising the vacuum cleaner main body 1 only needs to secure an exhaust amount necessary for the vacuum cleaner transformation 1 to rise from the floor surface. For example, as described in the third embodiment, An exhaust pressure sensor is provided at a position where the exhaust pressure can be measured directly or indirectly, an open / close valve is provided in the bottom plate exhaust hole 24, and the open / close valve is controlled based on the detection result of the exhaust pressure sensor. The opening area of 24 may be adjusted to ensure the exhaust amount necessary for ascent.
[0085]
According to the present embodiment, the exhaust from the dust collecting chamber 11 sucked by the fan 101 is divided into a floating exhaust for the cleaner body 1 and a cooling exhaust for the motor 95 in the fan casing 102. The The exhaust for raising the vacuum cleaner main body 1 does not cool the motor 95, so that the temperature does not rise. As a result, the skirt member 70 may be deteriorated or the floor surface may be heated to cause deformation or discoloration. In addition, the exhaust temperature does not rise even if it is repeatedly circulated through the floor suction tool. If the exhaust from the floating space 80 is exhausted from the main body exhaust port 30, the exhaust temperature can be lowered as in the case of the eighth embodiment.
[0086]
[Embodiment 10]
FIG. 18 is a longitudinal sectional view of the vacuum cleaner body of the electric vacuum cleaner according to Embodiment 10 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1-9, and description is abbreviate | omitted.
In the present embodiment, a motor chamber 14 is formed between the main partition wall 7 and the partition wall 17 of the cleaner body 1, and a rear exhaust passage communicating with the lower ventilation exhaust passage 20 between the partition wall 17 and the rear plate 4. 22 is provided. The motor chamber 14 is provided with an electric blower 15 including a motor 95 and a fan 101 similar to the electric blower 15 of the ninth embodiment. The bottom plate 13 below the motor 95 is connected to the lower ventilation exhaust passage 20. A plurality of exhaust holes 35 communicating with each other are provided.
[0087]
A partition plate 107 has a plurality of vent holes 108 and is detachably installed at the bottom of the dust collection chamber 11. A rechargeable battery chamber 90 is provided between the partition plate 107 and the bottom plate 6. A rechargeable battery 91 is accommodated. When the rechargeable battery 90 reaches the end of its life, the open / close lid 10 is opened, a hand is inserted from the dust collecting chamber 11 to remove the partition plate 107, and the new rechargeable battery 90 is replaced.
[0088]
51b is a floating body peripheral wall integrally formed with the vacuum cleaner body 1 slightly inside the peripheral wall at the bottom of the vacuum cleaner main body 1, 58 is a substantially dish-shaped bottom plate, It is detachably mounted by a fitting means (not shown) comprising a recess, and a plurality of floating exhaust outlets 63 are provided at the bottom. A skirt member 70 is detachably mounted by a skirt stopper 75 on the outer periphery of the floating body peripheral wall 51b.
[0089]
Reference numeral 57 denotes an upper plate provided on the outer periphery of the front end portion of the vent 59 between the bottom plate 6 and the bottom plate 58 of the cleaner body 1, and a plurality of exhaust ports 61 a are provided between the outer periphery and the bottom plate 58. An exhaust chamber 78 is formed between the upper plate 57 and the bottom plate 6, and an exhaust pressure equalizing chamber 61 is formed between the upper plate 57 and the bottom plate 58.
25a is a bottom plate exhaust port provided in the bottom plate 6 to communicate the exhaust chamber 78 and the lower exhaust passage 20, and 25b is a bottom plate exhaust port provided in the bottom plate 6 on the front side of the rechargeable battery chamber 90. The chamber 78 communicates with the lower exhaust passage 20 on the front side.
[0090]
Next, the operation of the present embodiment configured as described above will be described. The energization from the rechargeable battery 91 to the electric blower 15 and the charging of the rechargeable battery 91 are the same as those in the second embodiment.
The exhaust sucked from the dust collecting chamber 11 by the electric blower 15 is guided into the fan casing 102 and flows into the exhaust pressure equalizing chamber 61 from the exhaust port 104 through the bottom plate exhaust port 24 and the communication port 59, and the exhaust pressure equalizing. After the pressure is equalized in the chamber 61, the air is blown out from the floating exhaust outlet 63 toward the bent portion of the skirt member 70, and the bent portion is pressure-bonded to the floor surface (the carpet is shown in the figure) to make static pressure. The exhausted air is filled in the floating space 80 and the vacuum cleaner main body 1 is lifted.
[0091]
A part of the exhaust pressure equalized in the exhaust pressure equalizing chamber 61 flows into the exhaust chamber 78 from the exhaust port 61a, and passes through the bottom plate exhaust ports 25a and 25b through the lower exhaust passage 20 and the main body exhaust port 30 and The exhaust is discharged from the front exhaust outlet 2a to maintain the exhaust pressure in the exhaust pressure equalizing chamber 61, and thus in the floating space 80, substantially constant.
At this time, part of the exhaust gas in the dust collection chamber 11 flows into the rechargeable battery chamber 90 from the vent 108 provided in the partition plate 107, cools the rechargeable battery 91, and again from the vent 108 to the dust collection chamber. Returning to 11, the electric blower 15 is sucked.
[0092]
On the other hand, a part of the exhaust in the fan casing 102 is taken into the motor 95, and after cooling the motor 95, it is exhausted from the motor exhaust port 5a into the electric motor chamber 14, and the exhaust hole 35, the lower exhaust passage 20, the rear exhaust passage. 22 and filtered through a filter 22a and discharged from the main body exhaust port 30 to the outside of the apparatus.
[0093]
According to the present embodiment, substantially the same effect as in the ninth embodiment can be obtained, but furthermore, since the rechargeable battery 91 is provided below the dust collection chamber 11, the weight balance with the electric blower 15 is good. The rising of the vacuum cleaner body 1 is stabilized.
Further, since the rechargeable battery 91 is provided on the upstream side of the electric blower 15 and air-cooled, the air-cooling effect can be improved and the life of the rechargeable battery 91 can be extended. Note that the exhaust pressure equalizing chamber 61 of the present embodiment can also be implemented in other embodiments.
[0094]
[Embodiment 11]
FIG. 19 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 11 of the present invention. The same parts as those in the tenth embodiment are denoted by the same reference numerals, and description thereof is omitted.
The configuration of the present embodiment is substantially the same as that of the tenth embodiment, but the bottom plate 6 of the cleaner body 1 is provided with a plurality of bottom plate exhaust ports 25 around the communication port 59, and A rechargeable battery 91 is accommodated in the lower part of the dust collection chamber 11 of the lower exhaust passage 20.
[0095]
Further, in the levitation device 50, the upper plate 57 is formed to be small and the exhaust pressure equalizing chamber 61 is formed between the bottom plate 6 and the bottom plate 58 of the cleaner body 1, but this embodiment is particularly preferred. In FIG. 3, the floating air discharge path 72 provided at the bottom of the skirt member 70 is formed by a large number of small holes.
For example, as shown in FIG. 20, a net-like member 110 having a large number of small holes 111 that is slightly larger than the floating exhaust path 72 of the skirt member 70 is attached to the outer periphery of the inside or outside of the floating exhaust path 72 with an adhesive or the like. The floating evacuation path 72a is formed by pasting, or as shown in FIG. 21, the skirt member 70 is not provided with a large levitation exhaust path 72, and substantially corresponds to the levitation exhaust path 72 at the bottom of the skirt member 70. A floating air exhaust path 72a made up of a large number of small holes 111 is provided in the area to be operated.
[0096]
The operation of the present embodiment is almost the same as that of the tenth embodiment, and the exhaust gas exhausted from the exhaust port 104 of the electric blower 15 flows into the exhaust pressure equalizing chamber 61 from the communication port 59, where the pressure is equalized. Then, the air is blown out from the floating exhaust outlet 63 toward the skirt member 70, the exhaust space 80 is filled with the exhaust, and the cleaner body 1 is floated. Further, the exhaust gas flowing into the lower exhaust passage 20 from the bottom plate exhaust port 25 is separated and flowed back and forth, a part is discharged from the main body exhaust port 30 to the outside of the apparatus, and a part is cooled by the rechargeable battery 91 to the front part. It is discharged out of the machine through the exhaust port 2a.
[0097]
Further, when moving the surface of the cleaner body 1 that has floated, since the bottom of the skirt member 70 is formed of a large number of small holes 111 (or meshes), obstacles are unlikely to enter the floating space 80, so Can be moved to. The skirt member 70 according to the present embodiment configured as described above can also be used in other embodiments of the present invention.
[0098]
The effect of the present embodiment configured as described above is almost the same as in the case of the tenth embodiment, but a large number of small holes 111 are provided in the bottom of the skirt member 70 of the levitation device 50, so There is no risk of obstacles entering the space 80, and the cleaner body 1 can be moved smoothly.
[0099]
[Embodiment 12]
FIG. 22 is an explanatory diagram of the vacuum cleaner body of the electric vacuum cleaner according to the second embodiment.
In the present embodiment, as shown in the figure, in the cleaner body 1 in which wheels 86 are provided on both sides of the rear portion and casters 87 are attached to the front center portion, the wheels 86 and casters 87 (hereinafter referred to as both) Are collectively referred to as wheels 86 and 87), and the levitation device 50 is provided. Note that a heavy electric blower, a cord reel, a rechargeable battery, or the like is housed as a component above the levitation device 50.
[0100]
In the present embodiment configured as described above, the cleaner body 1 is always moved on the floor surface by the vehicles 86 and 87 as shown in FIG. When the power switch is turned on during cleaning, as shown in FIG. 22 (b), the levitation device 50 is actuated to lift the cleaner main body 1 so that it can be drawn on the floor surface. At this time, the levitation device 50 causes the cleaner body 1 to float up to a height at which the vehicles 86 and 87 are separated from the floor surface.
[0101]
In the present embodiment, since both the wheels 86 and 87 and the levitation device 50 are provided in the cleaner body 1, the cleaner body 1 can be moved lightly and easily before starting cleaning and after starting cleaning. Therefore, an easy-to-use vacuum cleaner can be obtained. This embodiment can be implemented in other embodiments.
[0102]
[Embodiment 13]
The present embodiment shows another example of the levitation device in each of the above-described embodiments.
In the example of FIG. 23, a plurality of floating exhaust outlets 63 of the floating body 51 constituting the floating device 50 are provided around the center of gravity of the cleaning body 1.
With this configuration, the cleaner body 1 can maintain a stable floating state even if the floor surface is an inclined surface or the like and the position of the center of gravity changes.
[0103]
In the example of FIG. 24, the skirt stopper 75 is formed in a substantially Y-shape with an opening at the bottom, and the outer skirt 70a is attached to the outer peripheral side, and a plurality of auxiliary exhaust ports 75b are provided at the top. The skirt member 70 is detachably fixed between the two.
With this configuration, when the exhaust gas leaks from between the inner skirt member 70 and the floor surface, the exhaust gas passes between the skirt member 70 and the outer skirt 70a and passes through the auxiliary exhaust port 75b. Since it is discharged outside and is not discharged outside the machine along the floor surface, dust on the floor surface can be prevented from flying up.
[0104]
In the example of FIG. 25, the skirt member 70 is formed in a substantially cylindrical shape, and a weight 73a having a specific gravity higher than that of the skirt member 70 such as a metal piece, a magnet, or a wire is attached to the lower end of the skirt member 70. In addition, the skirt attachment 75 hangs down and attaches to the floating body 51, and even when the cleaner body 1 is lifted, the lower end of the skirt member 70 is always in contact with the floor surface to keep the inside of the floating space 80 almost airtight. It is what I did. In this case, since the exhaust from the floating exhaust outlet 63 is blown to the inner surface of the skirt member 70, the dust on the floor surface is not directly raised, and the skirt member 70 is reliably pressed against the floor surface by wind pressure. . Naturally, the sealing effect with the floor surface is improved. According to this example, the skirt member 70 can be easily attached to and detached from the floating body 51. In particular, even when there is no weight 73a, the skirt member 70 is reliably pressed against the floor surface by the exhaust pressure, and the sealing performance is improved. The vacuum cleaner main body 1 can be stably levitated.
[0105]
In the example of FIG. 26, for example, in the electric vacuum cleaner of the tenth embodiment (FIG. 18), a plurality of ribs 112 are provided on the outer periphery of the bottom of the bottom plate 58 at positions that do not interfere with the floating exhaust outlet 63. A constant gap is always formed between the skirt member 70 and the bottom plate 58.
Thereby, exhaust_gas | exhaustion is smoothly introduce | transduced in the floating space 80 at the time of electricity supply, and the cleaner body 1 can be floated stably in a short time.
[0106]
The embodiment of the present invention has been described above, but the present invention is not limited to this, and can be modified as appropriate by combining the embodiments or incorporating a part thereof.
[0107]
【The invention's effect】
  The vacuum cleaner according to the present invention is provided with a vacuum cleaner body having an electric motor chamber in which a dust collection chamber and an electric blower are housed, and a lower surface of the vacuum cleaner body. The levitation device has a communication port that communicates with the motor chamber at the upper part, and a plurality of levitation exhaust outlets, an exhaust pressure equalization chamber for collecting exhaust, and a plurality of levitation exhaust openings are provided at the lower part. Around the floating bodyInstalledOne endFolded insideA skirt member made of a soft material that is in contact with the floor surface and has wear resistance or slip resistance on the outer surface thereof, andThe floating exhaust outlet is opened to the bent part of the skirt member, and the exhaust discharged from the floating exhaust outlet is blown to the bent part of the skirt member so that the bent part is in close contact with the floor surface.Because the vacuum cleaner body is almost at a constant heightLet it riseThe vacuum cleaner body can be moved lightly and easily.
[0108]
  The vacuum cleaner according to the present invention includes a vacuum cleaner main body having an electric motor chamber in which a dust collection chamber and an electric blower are accommodated, and a vacuum cleaner main body provided by exhaust from the electric blower. A levitation device that floats from the floor surface, the levitation device having a communication port communicating with the motor chamber at the upper portion, a plurality of levitation exhaust outlets, an exhaust pressure equalization chamber for collecting exhaust, and a plurality of levitation exhaust ports at the lower portion A levitated body and a levitated bodyIt is detachably attached to the periphery of the floor and one end is bent inward to contact the floorSince the floating exhaust outlet is opened toward the bent portion of the skirt member, the same effect as described above can be obtained.
[0109]
  Further, the electric vacuum cleaner according to the present invention is provided with a vacuum cleaner body having an electric motor chamber in which a dust collection chamber and an electric blower are housed, and a lower portion of the vacuum cleaner body, and the vacuum cleaner is exhausted from the electric blower. A levitation device for levitating the main body from the floor,The bottom plate of the motor chamber is provided with a motor chamber exhaust hole, the bottom plate of the cleaner body is provided with a bottom plate exhaust hole communicating with the motor chamber exhaust port, the levitation device is provided on the top plate, and the bottom plate exhaust hole is provided on the top plate. A floating body provided with a plurality of floating exhaust outlets at the lower portion of the upper plate, an exhaust pressure equalizing chamber for storing the exhaust, and a plurality of floating exhaust ports opened to the upper plate; A skirt member which is attached to the periphery of the floating body and is bent inward at one end so as to contact the floor surface and whose outer surface is made of a soft material having abrasion resistance or slip resistance; Since it opened toward the bending part of the skirt member, the effect similar to the above can be acquired.
  In addition, since the opening / closing valve is provided in the motor chamber exhaust hole and the opening degree thereof is adjusted, the floating of the cleaner body can be kept constant.
[0110]
The electric blower is composed of a motor, a dust suction fan and a cooling fan driven by this motor, and the exhaust of the dust suction fan is discharged to the levitation device, so the temperature of the exhaust for raising the vacuum cleaner body rises. Therefore, there is no possibility that the skirt member is deteriorated, the floor surface is deformed or discolored, and the exhaust temperature rises even if the exhaust gas is circulated through the floor suction tool. There is nothing.
[0111]
  Of the above skirt memberProvided inside the inner edgeSince the opening area of the levitation outlet is almost equal to or larger than the area of the bent part of the skirt member, there is little resistance to the floor surface when moving the lifted vacuum cleaner body. Can move.
[0112]
  Since the lower end portion of the skirt member has at least a double structure, the contact effect with the floor surface can be improved, and the wear resistance due to sliding contact with the floor surface during movement can be improved.
  In addition, the skirt memberInside the inner edgeSince a large number of levitation outlets are provided, there is no possibility of an obstacle entering the levitation space when ascending, and the cleaner body can be moved smoothly.
[0113]
An exhaust pressure sensor for detecting the exhaust pressure is provided in the above levitation device, and the amount of exhaust gas flowing into the levitation device is controlled based on the detection result of the exhaust pressure sensor. Therefore, the levitation of the vacuum cleaner main body can always be stably held at a substantially constant height position.
Moreover, since the exhaust from the levitation device is combined with the exhaust that has cooled the motor of the electric blower, the temperature of the exhaust discharged to the outside of the apparatus can be lowered.
[0114]
Since the above-described levitation device is configured to be detachable from the cleaner body, conversion of the skirt member and other members is easy.
Further, since the levitating body of the levitating device is configured integrally with the cleaner body, the levitating device can be easily set.
[0116]
  In the above vacuum cleaner,Of the bottom plate of the levitating deviceFloating exhaust outletIn a position where it does not interfere withSkirt memberBending partSince a rib is formed to form a gap with the skirt member, a constant gap can always be formed between the skirt member and the bottom plate even during non-energization, so that exhaust is smoothly introduced into the floating space when energized. The vacuum cleaner main body can be floated stably in a short time.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to Embodiment 1 of the present invention.
FIG. 2 is a rear view of FIG.
FIG. 3 is a bottom view of FIG. 1;
4 is an exploded perspective view of the levitation device of FIG. 1. FIG.
FIG. 5 is an explanatory diagram of the skirt member of FIG.
6 is a longitudinal sectional view showing a state in which a wheel member is mounted on the cleaner body of FIG. 1. FIG.
FIG. 7 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 2 of the present invention.
FIG. 8 is an explanatory diagram of a main part of a vacuum cleaner main body of an electric vacuum cleaner according to a third embodiment of the present invention.
FIG. 9 is an operation explanatory diagram of FIG.
10 is an electric circuit diagram of FIG. 8. FIG.
11 is an electrical circuit diagram of another example of FIG. 8. FIG.
FIG. 12 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to Embodiment 4 of the present invention.
FIG. 13 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to Embodiment 5 of the present invention.
FIG. 14 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to a sixth embodiment of the present invention.
FIG. 15 is a partial cross-sectional view of a vacuum cleaner body of a vacuum cleaner according to Embodiment 7 of the present invention.
FIG. 16 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to an eighth embodiment of the present invention.
FIG. 17 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to a ninth embodiment of the present invention.
FIG. 18 is a longitudinal sectional view of a vacuum cleaner main body of an electric vacuum cleaner according to Embodiment 10 of the present invention.
FIG. 19 is a longitudinal sectional view of a vacuum cleaner body of a vacuum cleaner according to an eleventh embodiment of the present invention.
20 is a plan view and a cross-sectional view of the main part of FIG.
FIG. 21 is a plan view of another example of the main part of FIG. 19;
FIG. 22 is an explanatory diagram of a vacuum cleaner main body of an electric vacuum cleaner according to a twelfth embodiment of the present invention.
FIG. 23 is an explanatory diagram of a main part of a vacuum cleaner body according to a thirteenth embodiment of the present invention.
FIG. 24 is an explanatory diagram of another example of FIG.
FIG. 25 is an explanatory diagram of still another example of FIG.
26 is an explanatory diagram of another example of FIG. 23. FIG.
FIG. 27 is a longitudinal sectional view of an example of a vacuum cleaner main body of a conventional floating electric vacuum cleaner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Front plate, 4 Rear plate, 6 Bottom plate, 11 Dust collection chamber, 12 Dust collector, 14 Electric motor chamber, 15 Electric blower, 18 Code reel chamber, 19 Code reel, 28 On-off valve, 30 Main body Exhaust port, 32 Control chamber, 33 Control unit, 50 Levitation device, 51 Levitation body, 59 Communication port, 61 Exhaust pressure equalization chamber, 61a Exhaust air passage, 62 Levitation exhaust port, 63 Levitation exhaust port, 70 Skirt member, 71 Sheet material, 72 Floating air outlet, 73 Folding part, 75 Skirt stop, 78 Exhaust chamber, 80 Floating space, 81 Wheel member, 86 Wheel, 87 Caster, 89 Charging power supply connection, 90 Rechargeable battery room, 91 charge Battery, 92 Exhaust pressure sensor, 95 Motor, 96 Dust suction fan, 97 Cooling fan, 98 Dust suction fan casing, 99 Cooling fan casing, 100 Exhaust port, 101 fan 102 fan casing, 103 partition, 105 separation exhaust port, 107 partition plate, 108 vent hole, 110 mesh member, 111 small hole, 112 rib.

Claims (12)

A vacuum cleaner main body having an electric motor chamber in which a dust collecting chamber and an electric blower are accommodated, and a levitating device provided at a lower portion of the vacuum cleaner main body, which floats the vacuum cleaner main body from a floor surface by exhaust from the electric blower. Prepared,
The levitating device has a communicating port communicating with the electric motor chamber at the upper part, and a floating body provided with a plurality of levitating exhaust outlets, an exhaust pressure equalizing chamber for collecting the exhaust, and a plurality of levitating exhaust ports at the lower part, one end is attached around the該浮upper body is bent inward in contact with its outer surface on the floor constituted by a skirt member made of a soft material having a wear-resistant or anti-slip properties, the said floating exhaust outlet An electric vacuum cleaner having an opening toward a bent portion of a skirt member . A vacuum cleaner main body having an electric motor chamber in which a dust collecting chamber and an electric blower are accommodated, and a levitating device provided at a lower portion of the vacuum cleaner main body, which floats the vacuum cleaner main body from a floor surface by exhaust from the electric blower. Prepared,
The levitating device has a communicating port communicating with the electric motor chamber at the upper part, and a floating body provided with a plurality of levitating exhaust outlets, an exhaust pressure equalizing chamber for collecting the exhaust, and a plurality of levitating exhaust ports at the lower part, A skirt member made of a soft material that is detachably attached to the periphery of the floating body and is bent inward at one end and is in contact with the floor surface, and the floating exhaust outlet is opened toward the bent portion of the skirt member A vacuum cleaner characterized by that. A vacuum cleaner main body having an electric motor chamber in which a dust collecting chamber and an electric blower are accommodated, and a levitating device provided at a lower portion of the vacuum cleaner main body, which floats the vacuum cleaner main body from a floor surface by exhaust from the electric blower. Prepared,
A motor chamber exhaust hole is provided in the bottom plate of the motor chamber, and a floor plate exhaust hole communicating with the motor chamber exhaust port is provided in the floor plate of the cleaner body.
The levitation device has a communication port communicating with the bottom plate exhaust hole in the upper plate, and opens to a plurality of levitation exhaust outlets, an exhaust pressure equalizing chamber for storing the exhaust gas, and the upper plate at a lower portion of the upper plate. A skirt made of a floating body provided with a plurality of levitation exhaust ports, and a soft material which is attached to the periphery of the levitation body, bent at one end and in contact with the floor surface, and whose outer surface is wear-resistant or slip-resistant A vacuum cleaner , wherein the floating exhaust outlet is opened toward the bent portion of the skirt member . The electric vacuum cleaner according to claim 3, wherein an opening / closing valve is provided in the exhaust hole of the electric motor room . The opening area of the floating air exhaust port provided on the inner side of the inner edge of the skirt member, any one of the preceding claims, characterized in that it has larger approximately equal to or Thereby the area of the bent portion of the skirt member The vacuum cleaner as described in. The vacuum cleaner according to any one of claims 1 to 5 , wherein a lower end portion of the skirt member has at least a double structure. The electric vacuum cleaner according to any one of claims 1 to 6 , wherein a number of floating air outlets are provided inside the inner edge of the skirt member. 2. An exhaust pressure sensor for detecting an exhaust pressure is provided in the levitation device, and the amount of exhaust gas flowing into the levitation device is controlled based on a detection result of the exhaust pressure sensor. vacuum cleaner according to any one of 1 to 7. The vacuum cleaner according to any one of claims 1 to 8 , wherein exhaust gas from the levitation device is merged with exhaust gas that has cooled a motor of an electric blower. The vacuum cleaner according to any one of claims 1 to 9 , wherein the levitation device is configured to be detachable from the vacuum cleaner body. The electric vacuum cleaner according to any one of claims 1 to 10, wherein the levitating body of the levitating device is formed integrally with a vacuum cleaner main body. The rib which forms a clearance gap between the bending part of the said skirt member in the position which does not interfere with the floating exhaust outlet of the bottom plate of the said levitation | floating apparatus was provided. Electric vacuum cleaner.

Images