JP2002223997A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner for efficiently separating sucked dust from air through the application of a centrifugal force. SOLUTION: A lid 4 for covering the upper part of a mounting lower recessed part 38 and the upper part of a case body 3 so as to be able to open is arranged in the case body 3 which has the mounting lower recessed part 38 to stores a motor-driven blower 6. A dust collecting part 9 is fixed between the case body 3 and the lid 4 so as to be integrally mounted attachably/detachably. A filter 93 having an intake opening 101 which communicates with a main body sucking port 63 and an air collecting opening 103 which communicates with an intake side of the motor-driven flower 6 is disposed on the upper surface of a dust collection cup 85 with a rough blind, truncated, conic, and cylindrical shape, where an inner surface is inclined and a diameter is enlarged downward. Dust sucked together with air from the main body sucking port 63 comes into the dust collection cup 85 from the intake opening 101 along a nearly peripheral direction. Air is made into a downward swirl on the inclined inner surface of the dust collection cup 85 and dust is pressurized against a bottom surface part 88 and efficiently separated by the application of the centrifugal force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner in which a dust collecting portion is detachably mounted on a main body case.

[0002]

2. Description of the Related Art Generally, in a vacuum cleaner using a paper dust bag, the collected dust bag is discarded, so that the cleaning cost cannot be reduced.

Therefore, as a vacuum cleaner that does not use a paper dust bag, a configuration described in, for example, Japanese Patent Publication No. 58-1936 is known.

The vacuum cleaner described in Japanese Patent Publication No. 58-1936 has a case body for accommodating an electric blower. And, on the front side which is the intake side of this case body,
A dust collection case having a suction port for connecting a hose is detachably attached. In addition, the case body has an opening on the front surface thereof, which is in communication with the intake port of the electric blower. On the other hand, the dust-collecting case has an opening at the front surface and an opening at the rear surface communicating with the communication hole facing the front peripheral edge of the case body. In addition, a filter body is removably closed and attached to the opening of the dust collecting case, and a dust collecting chamber is defined therein. Then, a dust collection case is detachably and integrally attached to a front portion of the case body to constitute a main body case.

In cleaning, a dust collecting case is attached to the front side of the case body so that the air inlet of the electric blower communicates with the dust collecting chamber in the dust collecting case via the filter body. After that, the electric blower is driven, and the dust sucked in with the air through the hose connected to the suction port of the dust collecting case flows into the dust collecting chamber, and the dust is separated by the filter body, and only the air is filtered. The air is blown from the intake port of the electric blower, exhausted into the case body, and further exhausted to the outside air.

The dust trapped in the dust collecting chamber of the dust collecting case is removed from the dust collecting case, the filter body is removed from the dust collecting case, the opening is opened, and the opening is directed downward. A configuration is adopted in which dust is discharged from an opening that is turned upside down.

[0007] However, the above-mentioned Japanese Patent Publication No. 58-1936.
In the vacuum cleaner described in Japanese Unexamined Patent Publication (Kokai) No., the air containing dust sucked into the dust collection case is directly filtered by the filter body, so that the filter body is easily clogged, and it is necessary to frequently clean the filter body. In addition, the cleaning work becomes complicated.

Therefore, there is known a configuration in which air containing dust is sucked in a spiral shape, and the dust and the air are separated by the action of centrifugal force due to the vortex of the spiral air.

[0009] The vacuum cleaner for separating dust and air by the action of centrifugal force due to the vortex has, for example, a case body for accommodating an electric blower. A suction port is opened at the front side of the case body, and a hose is detachably connected to the suction port. In addition, a dust collecting case that captures dust sucked together with air from a suction port through a hose through a hose is detachably attached to the case body. In order to efficiently separate air and dust, this dust collection case has an air intake opening that communicates with the suction port on the upper surface and sucks dust with air, and an air collection opening that discharges internal air on the upper surface. It is formed in an open bottomed cylindrical shape. Then, the dust collection case sucks dust along with air from above through the intake opening, flows in along the inner peripheral surface of the dust collection case, and drops the dust blown outward by centrifugal force by its own weight. Further, the air sucked into the inside is discharged from above the dust collecting case on the opposite side to the dust falling direction through the air collecting opening, and separates the dust and the air.

[0010]

However, in the above-mentioned conventional vacuum cleaner in which dust and air are separated by the action of centrifugal force due to eddy current, if the dust collecting case is simply made to have a bottomed cylindrical shape, the upper surface of the dust collecting case cannot be removed. Since the air sucked in along with the dust from the intake opening is discharged from the air collecting opening on the upper surface, the air may be exhausted from the air collecting opening on the upper surface before the dust is sufficiently separated. For this reason, it is necessary to provide a filter or the like at the air collection opening to prevent the outflow of dust, but the filter becomes clogged immediately, and the filter must be frequently cleaned, which may complicate the cleaning work. There is.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a vacuum cleaner capable of efficiently separating sucked dust and air by the action of centrifugal force.

[0012]

According to a first aspect of the present invention, there is provided an electric vacuum cleaner which accommodates an electric blower and has a main body suction port opened, and a dust which is communicated with the main body case through the main body suction port and sucked together with air. An intake opening which can be flowed into the interior substantially along the circumferential direction and is opened at the upper surface, an air collection opening which is communicated with the intake side of the electric blower and air which can flow out into the interior and which is opened at a substantially center of the upper surface, and A substantially bottomed conical cylindrical dust collector having a bottom surface located below the intake opening and the air collection opening, and having an inner surface inclined and gradually increasing in diameter downward. is there.

An intake opening is formed on the upper surface of the main body case so that dust which is communicated with a main body suction port of the main body case and is sucked together with air can flow into the main body along a substantially circumferential direction. The air collecting opening through which the air that has flowed into the inside can flow out is opened at the upper surface, and the dust collecting portion having the bottom portion located below the intake opening and the air collecting opening is inclined downward with the inner surface inclined. It is formed in a substantially conical bottomed cylindrical shape whose diameter gradually increases toward it. Due to this, the air sucked into the interior from the intake opening along the substantially circumferential direction becomes a vortex toward the lower part of the dust collecting part due to the inclination of the inner surface expanding toward the lower part of the dust collecting part, and the vicinity of the bottom part Flows through the upper air collection opening from the central part where the flow velocity slows down, so that the sucked air stays in the dust collecting part as a vortex for a longer time, and the dust sucked in with the air has sufficient centrifugal force. Works. Furthermore, the dust that has fallen to the bottom surface portion is prevented from being wound up on the inclined inner surface of the dust collection portion. From these, air and dust are efficiently separated.

[0014] According to a second aspect of the present invention, in the vacuum cleaner of the first aspect, the dust collecting portion has a bottom portion that can be opened and closed.

Then, the bottom surface of the dust collecting portion can be opened and closed. This facilitates the discharge of dust trapped inside.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the vacuum cleaner according to the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes a cleaner main body, and the cleaner main body 1 has a main body case 2.
The main body case 2 has a case body 3 and a lid body 4 to which an upper part of the case body 3 is rotatably opened and a rear part is connected and attached.

The case body 3 includes a drive section 8 which defines an electric blower chamber 7 accommodating the electric blower 6 therein.
And a placement unit 10 adjacent to the drive unit 8 to which the dust collection unit 9 is detachably mounted.

The drive section 8 has a bottom plate 11 whose front end side edge of the case body 3 is concave in an arc shape and whose rear end side is curved upward in an arc shape. At the front edge of the bottom plate portion 11, a front plate portion 12 which is curved in a series of concave arcs is provided. Further, a pair of side plates 13 is provided continuously on both side edges of the bottom plate 11 in the front-rear direction. These side plates
13 and 13 are curved inward such that the front side of the substantially middle portion in the vertical direction gradually decreases the facing distance. In addition, the bottom plate
A top plate portion 14 is provided at the rear end edge of the cover 11 so as to be substantially upward from the rear portion of the case body 3 and substantially oppose the bottom plate portion 11 to cover the upper surface. The top plate 14 has a front edge continuous with the front plate 12 and a side edge continuous with the side plates 13, 13. A rib 16 is provided in the drive unit 8 in a wall shape. The drive unit 8 of the case body 3 includes, by means of a rib 16, an electric blower room 7 for housing the electric blower 6, a power supply room 19 for horizontally storing a storage battery (not shown) as a power source, and a circuit. A circuit room 21 for accommodating the substrate 20 is defined.
Further, a charging section 22 provided with a concave charging terminal (not shown) that is open downward and rearward is provided substantially at the center of the curved rear surface of the bottom plate section 11 of the driving section 8.

A communication hole 25 is formed at an approximate center of the top plate 14 so as to communicate with the electric blower chamber 7 and open upward. On the upper surface of the top plate portion 14, a filter mounting portion 26 protruding upward in a substantially rectangular cylindrical shape so as to surround the communication hole 25.
Is provided. A first filter 27 having air permeability is detachably attached to the filter mounting portion 26 so as to cover the communication hole 25. Further, the top plate portion 14 is provided with a locking portion 28 protruding upward. In this locking part 28,
An engaging recess 29 is formed to open toward the front side. Further, the pair of side plates 13, 13 are provided with a plurality of exhaust ports 31 communicating with the electric blower chamber 7 and opening substantially toward the front side at the curved front portions. Further, a running wheel 33 as a wheel is rotatably supported by the side plate portion 13 at a lower rear portion thereof. In addition, the bottom plate 11 is provided with a power supply opening 34 communicating with the power supply chamber 19 and opening downward. The power supply opening 34 is closed and opened by an opening / closing lid 35.

On the other hand, the mounting portion 10 has a substantially cylindrical mounting lower concave portion 38 having a vertical axial direction. The inner peripheral surface of the mounting lower concave portion 38 is continuous with the front plate portion 12 of the driving portion 8, and the outer peripheral surface is continuously formed integrally with the side plate portions 13, 13 of the driving portion 8. On the lower surface of the mounting portion 10, a turning wheel 39 as a wheel is rotatably provided. Then, the case body 3 is formed by the turning wheel 39 and the traveling wheels 33, 33 of the drive unit 8,
It is possible to travel on the floor surface such that the mounting portion 10 is on the front side. Further, a positioning projection 40 is provided on the outer peripheral surface of the mounting portion 10 so as to project forward. A locking projection 41 as an abutting portion projects upward from the top surface of the positioning projection 40. In the driving unit 8, the power supply unit 19 is in front of the electric blower room 7 with respect to the traveling direction of the main body case 2, that is, in the order of the mounting lower recess 38, the power supply unit 19 and the electric blower room 7 along the traveling direction. It is formed as follows.

The electric blower 6 has an electric motor 44 for rotating a fan (not shown) and a fan cover 45 for covering the fan. At the center of the front surface of the fan cover 45, an intake port (not shown) is formed.
A buffer 47 is attached to a motor head 46 that supports a rotor shaft (not shown) of the electric motor 44. Further, an annular rubber support 48 is provided on the outer peripheral surface of the fan cover 45.
Is provided. The lower surface of the top plate 14 of the drive unit 8 covers the upper part of the fan cover 45 and projects in a substantially cylindrical shape toward the electric blower chamber 7. An upper support rib 49 for fitting and supporting is protruded. Further, on the upper surface of the bottom plate 11 of the drive unit 8, lower support ribs 50 projecting toward the electric blower chamber 7 and supporting the motor head 46 of the electric motor 44 via the buffer 47.
Is provided. The electric blower 6 is supported and fixed by the upper support rib 49 and the lower support rib 50 such that the peripheral edge of the intake port of the electric blower 6 faces the communication hole 25 and the communication hole 25 and the intake port communicate with each other in a substantially airtight manner. ing. The electric blower 6 is formed lighter than a storage battery.

On the other hand, the lid 4 has an upper plate portion 55 having substantially the same shape as the case 3 in plan view. And this upper plate part 55
A peripheral plate portion 56 protruding downward is provided on the periphery of. The lid 4 is formed in a substantially box shape with the upper plate 55 and the peripheral plate 56 opening downward.
Further, at the rear end of the lid 4, hinge mounting portions 57, 57 to which hollow hinges (not shown) that are pivotally supported by the rear of the case 3 are mounted are provided. And the lid 4 is
The hinge portion is pivotally supported by the case body 3 so as to be rotatable, and covers the upper surface of the case body 3 in an openable manner.

On the lower surface on the front side of the lid 4, a substantially cylindrical mounting concave portion 59 is provided downward. The upper mounting recess 59 is opposed to the lower mounting recess 38 of the mounting portion 10 of the case body 3 via a gap, and is formed to have substantially the same diameter as the lower mounting recess 38. Further, on the front upper surface of the lid 4, a suction portion 60 is provided to protrude. The suction portion 60 has a pair of side surfaces 61 facing each other in the width direction of the case body 3. The suction section 60 is provided with a suction pipe 62. The suction pipe 62 has a substantially L-shaped opening which opens a main body suction port 63 as a suction port forward at one end side and opens downward at a position where the other end side is displaced forward from the center of the mounting upper recess 59. It is formed in a bent shape. An airtight member 64 is provided at a lower end edge of the suction pipe 62.

A substantially fan-shaped through-hole 65 is formed in the mounting recess 59 of the lid 4 at a position substantially opposite to the side opposite to the side where the suction pipe 62 is located. In addition, an intake path 66 is provided on the lower surface of the lid 4 adjacent to the mounting recess 59. One end of the intake passage 66 is continuous with the through hole 65 from the side surface of the upper mounting recess 59, and the other end of the intake passage 66 is provided at the rear of the lid 4.
And open downward in a rectangular cylindrical shape at a position opposed to the communication hole 25. A seal member 67 is provided on the downstream side of the intake passage 66 at the opening edge of the rectangular tube, which is in a substantially airtight contact with the upper end edge of the filter mounting portion 26.

At the front end of the lid 4, a mounting recess 59 is provided.
A notch 70 is formed in the positioning recess 70. At the upper edge of the positioning recess 70, there is provided a cover 71 that opens downward so as to cover the upper portion of the positioning recess 70. The cover portion 71 is formed continuously from the outer surface of the suction portion 60 so as to face the positioning protrusion 42.

Further, a locking portion 75 is provided on the lid 4 with an intake passage 66.
Are provided on both sides. These locks 75
Is engaged with an engagement recess 29 of an engagement portion 28 of the case body 3 by an operation button (not shown) provided on each of the side surfaces 61 of the suction portion 60 so as to be removably engaged.

A handle means 77 is provided on the upper surface of the lid 4. The handle means 77 is composed of a first handle 78 having a front end portion continuous with the suction portion 60 and having an axial direction in the front-rear direction, and a lid integrally connected to the rear end portion of the first handle 78 in a branched manner. A pair of substantially symmetrical second handles 79, 79 are provided on both sides of the rear portion of the body 4, and are formed in a substantially Y-shape in plan view. The second handles 79, 79 are in a standing state in which the rear surface of the main body case 2 is placed facing the floor surface, and substantially abuts the floor surface to prevent the main body case 2 from tipping over.

Further, in the vicinity of the suction portion 60 of the handle means 77, there is provided a display means 80 for displaying, for example, a charge notification sign requesting charging during charging and when the remaining amount of charge of the storage battery becomes low. I have. Further, in the handle means 77, a lead wire 81 is disposed so as to pass through the inside of the hinge portion.
One end of the lead wire 81 is connected to the circuit board 20 in the circuit chamber 21 of the case body 3, and the other end is connected to the display means 80 and to the connector 82 provided in the suction part 60. .

On the other hand, the dust collecting portion 9 is provided with a mounting portion 10 of the case body 3.
Has a dust collection cup 85 placed on the surface. The dust collecting cup 85 has a discharge port 86 at an upper end surface, and an inner surface, that is, an inner surface of the dust collecting cup 85 is inclined, and has a substantially frustoconical cylindrical body portion whose diameter gradually increases downward. 87 and a substantially disk-shaped bottom portion 88 which is continuous with the lower end periphery of the body portion 87 and closes the lower end surface.
And is formed in a substantially bottomed frustoconical cylindrical shape. The dust collecting cup 85 is formed by, for example, blow molding or joining two members that are symmetrical in a vertical plane. The dust collecting cup 85 has a flange-like flange 89 protruding along the opening edge of the discharge port 86. Also,
A substantially cylindrical filter body mounting portion 90 is provided on the leading edge of the flange portion 89 substantially coaxially with the body portion 87 and continuously with the flange portion 89. Further, on the outer peripheral surface of the body portion 87 of the dust collection cup 85, a handle portion 91 is provided, which is a free end protruding outward from the upper end and having a distal end protruding downward. The locking projection 41 of the positioning projection 42 of the case body 3 is removably inserted and engaged with the lower end of the handle 91. The handle 91 has a concave upper surface.

The dust collecting cup 85 has a filter body mounting portion 90.
There is provided a filter body 93 which is detachably fitted and attached to the filter body and closes the discharge port 86. The filter 93 has a substantially cylindrical fitting portion 94 fitted to the filter body mounting portion 90, and the fitting portion 94.
And has a gas-permeable lid portion 95 for closing the lower end surface, and is formed in a substantially dish shape with an open upper surface.

A tongue-shaped knob 97 whose tip projects upward is provided on the outer peripheral edge of the upper end of the fitting portion 94 of the filter 93.
Is provided. The knob 97 substantially engages with the upper surface of the handle portion 91 in a state in which the upper surface of the handle portion 91 is substantially closed and its tip protrudes upward from the handle portion 91.

The lid 95 of the filter 93 is provided with a substantially cylindrical intake cylinder 100 in a vertical direction at a position displaced near the periphery. The intake cylinder portion 100 has an upper end in contact with the airtight member 64 of the suction portion 60 and substantially airtight communication with the suction pipe 62, and a lower end directed toward the side along the tangential direction of the fitting portion 94.
Open one. A substantially circular air collecting opening 103 is formed substantially at the center of the lid 95. A second filter 104, whose bottom is formed in a cylindrical shape with an arcuate bottom with a mesh member, is removably fitted to the air collecting opening 103 and is detachably attached to the lid 95. .

Further, the filter body 93 is provided with a lattice-shaped frame portion 105 which is detachably attached to the opening at the upper end surface of the fitting portion 94. A third filter 106 having air permeability is detachably mounted between the lid 95 and the frame 105 so as to close the air collecting opening 103.

The dust collector 9 is provided with a knob of the filter 93.
97 is engaged with the handle portion 91, and the filter body 93 is attached to the dust collection cup 85.
Is configured. The dust collecting portion 9 has the lower portion of the dust collecting cup 85 fitted and engaged with the lower mounting recess 38 of the case body 3 and the upper portion fitted with the upper mounting recess 59 of the lid 4 and engaged therewith. And the case body 3 so as to be sandwiched.
When the dust collecting section 9 is mounted, the filter 93
The upper end edge of the intake cylinder portion 100 is the suction pipe 62 of the suction portion 60 of the lid 4.
The frame 105 is substantially airtightly connected to the lower end of the cover 4 through the airtight member 64 and the frame portion 105 is almost airtightly connected to the through hole 65 of the lid 4. That is, the main body suction port 63 of the suction part 60 is connected to the suction pipe 62 of the suction part 60, the suction cylinder part 100 of the dust collection part 9, the inside of the dust collection cup 85, the air collection opening 103, the through hole 65, the suction passage 66, and the communication. Hole 2
5 and communicates with the intake port of the electric blower 6 through the suction air passage 108.
The dust collecting section 9 is located in the intake air passage 108 extending from the main body intake port 63 to the intake port of the electric blower 6.

In the dust collecting portion 9, the locking convex portion 41 of the positioning convex portion 40 is engaged with the lower end of the handle portion 91, and the upper portion of the handle portion 91 is engaged with the positioning concave portion 70 of the lid 4. And
The rotation is stopped and the positioning is fixed.

On the other hand, in FIG. 2, reference numeral 110 denotes a hose. The hose 110 has a hose body 111 having flexibility and an unillustrated electric wire provided in a spiral shape. At the base end of the hose body 111, there is provided a connection pipe 112 which is fitted and connected to the body suction port 63 of the suction section 60 of the cleaner body 1. At the tip of the hose body 111, a grip portion 113 that is bent in a substantially rectangular shape is provided. The connection pipe 112 is provided with a terminal pin (not shown) connected to one end of the electric wire of the hose body 111 and connected to the connector 82 provided in the suction part 60. In addition, the grip 113
Operating means having various buttons 114, 114 connected to the electric wire of the hose body 111 for setting the driving state of the electric blower 6 and the like
115 are provided.

An extensible extension pipe 117 is detachably connected to the tip of the grip portion 113 of the hose 110, and a suction port 118 is detachably connected to the tip of the extension pipe 117.

Next, the operation of the above embodiment will be described.

First, the filter 93 is previously placed in the dust collecting cup 85.
To form a dust collecting section 9. Further, the user holds the handle means 77 and pivots the lid 4 upward at a hinge (not shown) to open the upper part of the case 3. And the handle part
With the handle 91, the dust collecting portion 9 is inserted into and engaged with the lower mounting recess 38 of the case body 3. Further, the lower end of the handle portion 91 is inserted into and engaged with the locking convex portion 41 of the positioning convex portion 40 of the case body 3 and positioned, and the dust collecting portion 9 is held and mounted on the mounting portion 10.

Thereafter, the handle means 77 is again held and the lid 4 is held.
The lower surface of the lid 4 is the upper surface of the case 3 and the dust collecting section 9.
Is rotated so as to cover the upper surface by pressing. Further, the upper part of the dust collecting part 9 is inserted into and engaged with the upper concave part 59 of the lid 4, and the upper part of the handle part 91 is engaged with the positioning concave part 70 of the lid 4 for positioning. Then, the locking portions 75, 75 are engaged with the locking concave portions 29 of the case body 3, and the dust collecting portion 9 is mounted on the main body case 2. In this state, the lower end of the suction pipe 62 of the suction part 60 of the lid 4 is substantially airtightly connected to the upper end edge of the suction cylinder part 100 of the filter 93 of the dust collection part 9 via the airtight member 64. . Further, the frame 105 of the filter 93 is brought into close contact with the lower surface of the upper mounting recess 59 of the lid 4, and the air collecting opening 103 communicates with the through-hole 65 of the lid 4 almost airtightly through the frame 105. And suction air passage 108
Is configured.

Then, a hose is inserted into the main body suction port 63 of the suction part 60.
The connection pipe 112 of 110 is connected, and the suction port body 118 is connected via the extension pipe 117 as appropriate, and a cleaning standby state is set. Note that accessories such as furniture brushes and gap nozzles may be connected instead of the suction port body 118, and accessories may be connected instead of the extension pipe 117 and the suction port body 118.

In the cleaning standby state, the holding portion 1 of the hose 110 is
By the setting operation of the operating means 115 of the thirteenth, the electric blower 6
Drive and clean. Then, by driving the electric blower 6, dust is sucked together with air from a floor suction port (not shown) opened on the lower surface of the suction port body 118. The air containing the sucked dust is sucked from the main body suction port 63 of the suction unit 60 via the extension pipe 117 and the hose 110. further,
The sucked air passes through the suction pipe 62 of the suction part 60 and the suction cylinder part 100 of the dust collection part 9, and flows from the suction opening 101 to the dust collection cup.
The dust flows into the dust collecting cup 85 spirally in the tangential direction of the inner peripheral surface of the dust collecting cup 85.

Here, since the inner surface of the dust collecting cup 85 is inclined and expands downward, the body 87 of the dust collecting cup 85
Due to the inclined inner surface, the force of the spirally flowing air acting outward in the horizontal direction is converted into an obliquely downward force. Accordingly, the air that has swirled into the dust collection cup 85 becomes a swirl flowing downward. And
The air flows as a vortex to the bottom surface 88 of the dust collection cup 85,
The dust flows out of the dust collecting cup 85 from the air collecting opening 103 through the second filter 104 of the dust collecting part 9 from the center of the vortex having a low flow velocity, which is located on the central axis of the dust collecting cup 85. Further, the dust in the air falls along the inner surface of the dust collecting cup 85 due to the centrifugal force of the vortex of the air, and the dust turns at the position of the large-diameter bottom surface 88, and the inclined inner surface of the dust collecting cup 85 Is compressed so that it is prevented from being rolled up upward and pressed, and gathers at the central portion where the flow velocity is slow. And
The separated air is filtered by the third filter 106 of the filter 93 of the dust collecting section 9 to remove fine dust mixed therein, and passes through the frame 105 to pass through the lid 4 from the dust collecting section 9. The gas flows into the intake passage 66 through the hole 65. Further, the air that has flowed into the intake passage 66 is sucked from the intake port of the electric blower 6 through the communication hole 25 of the case body 3. Further, the air passes through the electric blower 6 and is exhausted into the electric blower room 7, and is further exhausted from the exhaust port 31 to the outside air.

The operating means of the gripper 113 of the hose 110
After the electric blower 6 is stopped by the setting operation of 115 and the cleaning is finished, the lock button 75 is operated by operating an operation button (not shown).
Is removed from the locking recess 29, and the lid 4 is rotated to open the upper surface of the dust collecting portion 9 and the upper surface of the case body 3. Then, the user collects the dust collecting portion 9 from the case body 3 by holding the handle portion 91. Thereafter, the filter 93 is removed from the dust collecting cup 85 with the knob 97, and the dust trapped in the dust collecting cup 85 is discharged from the discharge port 86.

As described above, in the above embodiment, the intake opening 101 communicating with the main body suction port 63 of the suction section 60 is opened on the upper surface, and the air collecting opening 103 communicating with the intake side of the electric blower 6 is formed on the upper surface. Dust collecting cup 85 of the dust collecting part 9 with the opening
Is formed in a substantially bottomed frusto-conical cylindrical shape whose inner surface is inclined and gradually becomes downward in diameter. This allows the intake opening
The air sucked from the 101 into the dust collecting cup 85 substantially along the circumferential direction becomes a vortex flowing downward due to the inclination of the inner surface expanding toward the bottom of the dust collecting cup 85, and flows to the vicinity of the bottom surface portion 88. Air collection opening 103 from the center where the flow velocity slows down
Flows through.

Therefore, a dust collection cup for the sucked air
The vortex stays in the air 85 for a longer time, and the dust sucked in with the air is sufficiently centrifuged. Further, the dust that has fallen to the bottom surface portion 88 of the dust collection cup 85 is suppressed from being wound up on the inclined inner surface of the dust collection cup 85, and is pressed against the bottom surface portion 88. Accordingly, the dust and the dust can be efficiently and easily separated from each other by forming the dust collecting cup 85 of the dust collecting portion 9 into a simple configuration having a substantially truncated conical cylindrical shape with a bottom and gradually increasing in diameter. Further, fine dust mixed from the air collecting opening 103 to the intake side of the electric blower 6 can be reduced. Further, since a compressive force against the dust acts, the amount of dust trapped in the dust collecting cup 85 can be substantially increased, and the cleaning efficiency can be improved.

In the above embodiment, the dust collecting section 9
As described above, the filter body 93 is provided in the dust collection cup 85,
The structure of the filter 93 is provided on the lid 4 or the case 3, and the lid 4 is rotated to cover the upper surface of the dust collection cup 85, thereby opening the intake opening.
It is also possible to form the dust collecting section 9 in which the air collecting opening 103 and the air collecting opening 103 are opened on the upper surface.

Although a storage battery is used as a power source as a battery, a commercial AC power source may be supplied via a power cord, or a configuration using a dry battery may be used.

Next, another embodiment of the present invention will be described with reference to FIG.

In the embodiment shown in FIG. 5, the bottom surface of the dust collecting cup 85 of the embodiment shown in FIGS. 1 to 4 can be opened and closed.

That is, the dust collecting section 121 has a dust collecting cup 122. The dust collecting cup 122 has an outlet 123
And a discharge port 124 is opened on the lower surface, and has a substantially frustoconical cylindrical body portion 125 whose diameter gradually increases downward. A handle portion 91 similar to the embodiment shown in FIGS. 1 to 4 is integrally provided on the upper outer peripheral surface of the body portion 125. At the lower end edge of the body part 125, a substantially cylindrical shaft support part 126 is provided corresponding to the position where the handle part 91 projects, and extends in the tangential direction of the body part 125 in the axial direction. The shaft 127 is rotatably fitted into the shaft support 126. Further, a locking claw portion 128 is formed on the outer peripheral surface of the lower end of the body portion 125 so as to protrude from the outer peripheral surface of the body portion 125 on a side opposite to the shaft support portion 126 in the radial direction.

A bottom surface 131 is attached to the lower surface of the body 125 so as to be openable and closable. The bottom surface portion 131 is formed in a substantially disk shape with its peripheral edge bent upward, and the upper end edge is formed to have substantially the same diameter as the lower end of the body portion 125 so that it can be joined to the lower end edge of the body portion 125. I have. At the upper end edge of the bottom surface portion 131, a substantially cylindrical joint portion 132 is provided along the axial direction in the tangential direction of the bottom surface portion 131. The shaft 127 of the body portion 125 is rotatably fitted into the joint portion 132, and the body portion 12
The hinge means 133 is composed of the five shaft support portions 126, the shaft 127, and the joint portion 132. And this hinge means 133
As a result, the bottom surface portion 131 is pivotally supported by the body portion 125 so that the discharge port 124 of the body portion 125 can be opened and closed. Also, on the bottom part 131,
An engaging and disengaging member 135 is provided on the outer peripheral surface of
Is provided. The engagement / disengagement member 135 is rotatably provided on the bottom end portion 131 with the base end side pivotally supported and the tip end side rotatable.
Further, the engaging / disengaging member 135 is provided with a claw portion 136 at a distal end serving as a rotation end so as to be able to be engaged and disengaged with the locking claw portion 128 of the body portion 125. A guide surface 137 that is gradually inclined toward the center of rotation toward the claw portion 136 is provided at the tip of the engagement / disengagement member 135. The engagement / disengagement member 135 is attached to the locking claw 128 by the claw 13.
6 is rotationally urged by urging means such as a torsion spring or a spring spring (not shown) so that the 6 always engages.

When discharging the dust trapped in the dust collecting cup 122, the engagement / disengagement member 135 is rotated against the urging force of the urging means, and the claw portion of the engagement / disengagement member 135 is engaged. Clasp part 128
Remove from By detaching the engaging / disengaging member 135 from the locking claw portion 128, the bottom portion 131 rotates about the shaft 127 by its own weight, and the discharge port 124 of the body portion 125 is opened. Then, the dust on the bottom portion 131 falls so as to slide down the bottom portion 131 and is discharged from the dust collection cup 122.

After the dust is discharged, the bottom 131 is attached to the body 1
Rotate around the shaft 127 toward 25, and
Of the body portion 125 is closed to close the discharge port 124 of the body portion 125 so as to form a substantially bottomed frustoconical cylindrical dust collecting cup 122.
Is configured. Note that the engagement of the engagement / disengagement member 135 with the engagement claw portion 128 is performed by rotating the bottom surface 131 so that the guide surface of the engagement / disengagement member 135 is
137 contacts the tip of the locking claw 128. Furthermore, the bottom part 13
By rotating 1, the engagement / disengagement member 135 rotates so that the tip of the locking claw 128 slides relatively on the guide surface 137,
The claw portion is formed on the locking claw portion 128 so as to get over the locking claw portion 128.
136 is locked.

According to the embodiment shown in FIG. 5, in addition to the effects of the embodiment shown in FIGS. 1 to 4, dust trapped inside can be easily discharged.

Further, a hinge means 133 is provided on the side of the handle portion 91 protruding, and an engaging / disengaging member 135 for holding the closed state of the discharge port 124 by the bottom portion 131 is provided on the opposite side to the handle portion 91. I have. Therefore, for example, when removing the dust collecting portion 121 from the case body 3 by holding the handle portion 91 from the case body 3, the engaging / disengaging member 135 comes off the locking claw portion 128 by accidentally touching the engaging / disengaging member 135. In addition, careless discharge of dust can be prevented.

Further, a guide surface 137 is provided on the engagement / disengagement member 135 so that the engagement / disengagement member 135 is constantly urged by the urging means so as to be engaged with the engagement claw 128. Therefore, when closing the discharge port 124 by rotating the bottom portion 131, the bottom portion 131 can be simply rotated without operating the engagement / disengagement member 135, and the dust discharge operation can be further facilitated.

Since the bottom surface 131 is provided so that the discharge port 124 on the lower surface of the body portion 125 can be opened and closed, a substantially bottomed conical cylindrical dust collection cup 122 whose inner surface is inclined and increases in diameter downward.
But it can be easily molded.

[0060]

According to the first aspect of the present invention, the upper surface has an intake opening through which dust sucked in with air can flow in along the circumferential direction, and the upper surface communicates with the intake side of the electric blower. The dust collecting portion having an air collecting opening through which air can flow out is formed in a substantially bottomed conical cylindrical shape whose inner surface is inclined and gradually increases in diameter downward. For this reason, the sucked air becomes a vortex toward the lower part of the dust collecting part due to the inclination of the inner surface that expands in diameter toward the lower part of the dust collecting part. Become longer,
The centrifugal force acts sufficiently on the dust sucked in with the air, and the dust that has fallen to the bottom is suppressed from being rolled up on the inclined inner surface of the dust collector,
Air and dust can be efficiently separated.

According to the vacuum cleaner of the second aspect, in addition to the effect of the vacuum cleaner of the first aspect, since the bottom of the dust collecting portion can be opened and closed, the dust trapped inside can be easily discharged. it can.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing the electric vacuum cleaner.

FIG. 3 is a perspective view showing the same case body.

FIG. 4 is a perspective view from the bottom showing the upper cover.

FIG. 5 is a cross-sectional view of a dust collecting section showing another embodiment of the vacuum cleaner of the present invention.

[Explanation of symbols]

 2 Body case 6 Electric blower 9 Dust collecting part 63 Body suction port 88 Bottom part 101 Air intake opening 103 Air collection opening

Claims (2)

[Claims] 1. A main body case which houses an electric blower and has a main body suction opening, and a dust which is communicated with the main body suction opening of the main body case and is sucked together with air into the main body case along a substantially circumferential direction and is opened at an upper surface. Air intake opening, an air collection opening which is communicated with the intake side of the electric blower and through which the air that has flowed in can flow out, and which is opened at the approximate center of the upper surface, and a bottom surface located below the intake opening and the air collection opening A vacuum cleaner having a substantially cylindrical bottomed conical dust collecting portion having an inner surface inclined and having a diameter gradually decreasing downward. 2. The vacuum cleaner according to claim 1, wherein a bottom portion of the dust collecting portion can be opened and closed.