JP2001212041A - Electric vacuum cleaner - Google Patents

Abstract

(57) [Summary] In a conventional vacuum cleaner, an intake port for blowing to a blade of a rotary cleaning body is formed only on the front surface of the suction body, so that the rotational torque of the rotary cleaning body can be improved. Did not. A first suction port formed at a front side of a lower case to allow air to flow in below a rotation axis of a rotary cleaning body, and a rotary cleaning body formed at a rear side of an upper case are provided on a suction body. And a second intake port through which air flows in below the rotation shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vacuum cleaner,
In particular, it relates to a vacuum cleaner provided with a novel mouthpiece.

[0002]

2. Description of the Related Art As for a suction body used in a conventional vacuum cleaner, for example, as disclosed in Japanese Patent Application Laid-Open No. H10-234629, a rotary cleaning body having a blade in a suction body is provided. There is disclosed a technique in which air flows from a suction port formed in a front portion and is blown against blades of a rotary cleaning body to drive the rotary cleaning body.

[0003]

However, in the technique described in Japanese Patent Application Laid-Open No. Hei 10-234629, since the air inlet blown to the blade of the rotary cleaning body is formed only on the front surface of the suction body, the rotary cleaning is performed. I couldn't improve the rotational torque of my body. Further, since only the blade is provided on the outer periphery of the rotary cleaning body, it is impossible to wipe the floor surface with the rotary cleaning body, for example.

To solve this problem, for example, Japanese Patent Laid-Open
As disclosed in Japanese Patent Application Laid-Open No. 11-197071, there is disclosed a technology in which a brush body made of a blade, nylon or the like is symmetrically disposed on a rotary cleaning body so that a floor surface can be wiped. ing. However, Japanese Patent Application Laid-Open No.
In the technology disclosed in Japanese Patent Application Laid-Open No. 197071, air flowing from an air inlet passes through a brush body, and a rotary cleaning body is driven by an airflow received only by a blade. It was not possible to obtain a sufficient rotational torque of the rotary cleaning body to scrape dust on the surface.

[0005] Therefore, an object of the present invention is to solve the above-mentioned problems, and to secure the rotating torque of the rotary cleaning body, and to further perform electric cleaning using a suction body that is most suitable for cleaning different cleaning surfaces such as carpets, tatami mats, and floors. To provide machines.

[0006]

In order to achieve the above object, the present invention is characterized in that a suction body formed by arranging an upper case on a lower case having a suction port on a lower surface;
A rotary cleaning body disposed at a suction port of the suction main body, a first air intake port formed at a front side of the lower case and configured to allow air to flow below a rotation axis of the rotary cleaning body, and an upper case; And a second air inlet formed on the rear side of the rotary cleaner to allow air to flow in below the rotation axis of the rotary cleaning body.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 15 is a perspective view showing the external appearance of a vacuum cleaner according to an embodiment of the present invention. Reference numeral 1501 denotes a cleaner main body in which a control circuit, an electric blower and the like are incorporated, 1502 denotes a hose connected to a suction port of the cleaner main body 1501, 15
Reference numeral 03 denotes a hose hand portion that is gripped by the user and connects a hose to one end thereof, 1504 denotes an extension tube connected to the other end of the hose hand portion 1503, 1505 denotes a suction port connected to the extension tube 1504, and 1506 denotes a hose hand portion. A switch operation unit provided in the unit 1503; 1507, an infrared light emitting unit provided in the hose hand unit 1503;
Reference numeral 1509 denotes an infrared light receiving unit provided on the upper surface of the apparatus, and 1509 denotes an indoor ceiling.

Next, the operation of the vacuum cleaner according to the present embodiment will be described. The user of the vacuum cleaner has the hose hand 15
When one of the switch operation units 1506 provided on the switch 03 is pressed, a signal code corresponding to the pressed switch is emitted from the infrared light emitting unit 1507 as an infrared signal.

The infrared light emitting section 1507 is disposed so as to face substantially vertically upward in a normal use state, and an infrared signal radiated from the infrared light emitting section 1507 is transmitted to the ceiling 15 of the room.
The light is reflected on the wall 09 and the wall, and reaches the infrared light receiving unit 1508 of the cleaner main body 1501.

The infrared signal that has reached the infrared light receiving section 1508 controls the vacuum cleaner through a control circuit built in the cleaner main body 1501.

The vacuum cleaner according to the present embodiment transmits the operation information input by the user to the cleaner main body 1501 using an infrared signal as described above, and controls the vacuum cleaner. In addition, since a power supply line is not used for the hose 1502, the weight of the hose can be reduced.

[0013] The mouthpiece used in such a vacuum cleaner is as follows.
A type in which a cleaning body is rotated mainly using a suction airflow of an electric blower is used.

The present embodiment relates to such a mouthpiece improvement. Hereinafter, a first embodiment according to the present embodiment will be described with reference to FIGS.

FIG. 1 shows a mouthpiece 1 according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the mouthpiece 505, FIG.
FIG. 3 is a top view of the mouthpiece 1505, and FIG.
5 is a rear view of the mouthpiece 1505, FIG. 6 is a bottom view of the mouthpiece 1505, FIG. 7 is a sectional view taken along the line AA in FIG. 6, FIG. 8 is a sectional view taken along the line BB in FIG. Is the mouthpiece 1
FIG. 10 is an enlarged view of a main part of the hook body 124 on the lower surface of the suction body 150. FIG. 10 is a perspective view of the lower surface of the suction body showing the removal of the rotary cleaning body 117 from the lower surface of the suction body 1505. FIG. FIG. 12 is a perspective view of the lower surface of the mouthpiece showing a state where the cleaning member 117 is removed.
It is a principal part enlarged view of 17.

In FIG. 1 to FIG. 12, the suction body 100, which is the skeleton of the suction body 1505, is divided into upper and lower parts at a height substantially at the center thereof.
The lower case 101 includes a lower case 101 and an upper case 102 disposed above the lower case 101. Also, the mouthpiece body 100 is formed in a substantially rectangular shape,
It is configured such that the depth direction is shorter and the left-right direction becomes longer than the traveling direction of the mouthpiece.

An impact absorbing bumper 104 for maintaining airtightness and preventing damage to furniture and the like is attached to an outer periphery of a position where the lower case 101 and the upper case 102 come into contact with each other.

At the rear of the mouthpiece body 100, there is provided a rotating shaft 106 rotatable on a receiving portion 105 and a casing which is a first joint having an opening 107 and rotatable in the vertical direction.
A suction joint 109 serving as a second joint rotatable in the left-right direction with respect to the suction main body 100 is connected to a distal end of the suction joint 108. In the present embodiment, the first
The casing 108 serving as a joint is rotatably connected to the suction joint 109 serving as a second joint in the vertical direction.
The joint may be configured to be rotatable in the circumferential direction with respect to the back surface of the suction main body 100, and the second joint may be connected to the suction main body 100 so as to be vertically rotatable.

The lower case 101 and the upper case 102 are fixed by screws 110. And the casing 10
The rotation shaft 106 is sandwiched between the lower case 101 and the upper case 102, and is rotatable in the vertical direction. In the present embodiment, the casing 108 is configured to rotate upward by about 90 degrees. Further, the casing 10
A shutter member 111 is disposed between the lower case 8 and the lower case 101. The shutter member 111 is provided to close a gap between the casing 108 and the lower case 101 when the casing 108 rotates upward by about 90 degrees.

Below the lower case 101, a suction body 150 is provided.
5 is moved in the front-rear direction,
Wheels are provided so as to keep a constant distance between the lower surface of the cleaning member 5 and the cleaning surface. These wheels are a pair of front wheels 112 pivotally supported in the front-rear direction of the suction main body 110 by an axle 112a, and a vacuum cleaner similarly rotatably supported in the front-rear direction of the suction main body 100 by an axle 113a. Rear wheel 1 for receiving pressure on the cleaning surface during use
13.

One end of the axle 113a of the rear wheel 113 is covered by an axle cover 114.
4 is fixed to the lower case 101 by screws 115. Details of the shaft cover 114 will be described later.

A suction port 1 is provided on the front side of the lower case 101.
A pressure control plate 115 for holding the suction pressure in the inside 03 is provided.

Inside the mouthpiece 1505, there is provided a rotary cleaning body 117 for scraping up dust and wiping the cleaning surface. The rotating cleaning body 117 has a groove formed in a rotating body made of metal such as aluminum or resin, and a soft brush 118 and an elastic blade 119 made of vinyl chloride, nylon, rubber or the like are formed in the groove. It is arranged. A brush 119a is provided at a radial end of the blade 119, and the brush 119a is sewn with a thread or the like near the distal end of the blade 119 and fixed. In this embodiment, four spiral grooves are formed by shifting the phase by about 90 degrees in the circumferential direction of the rotating body.
18 and blades 119 are symmetrically arranged so as to face each other. Turbine blades 125a and 125b are provided on both sides of the brush 118. These turbine blades 125a and 125b are also blade 1
Similar to 19, it is made of elastic vinyl chloride, nylon, rubber or the like. Note that the spiral groove is 4
The number is not limited to the number, but may be set arbitrarily in the range of 2 to 8. Further, the twist angle of the groove may be arbitrarily set in a range of 90 degrees to 360 degrees. Further, the rotating body may be V-shaped from both ends toward the center.

Bearings 120 are provided at both ends of the rotary cleaning body 117.
a, 120b, and one of the bearings 12
0a is inserted into the bearing support 121 on one side of the lower case 101. The bearings 120a and 120b are formed in a substantially rectangular shape, and the outer dimension of the outer dimension a of the bearing 120b is larger than the outer dimension of the bearing 120a.

On the other side of the lower case 101, a brush cover 122 is provided. The brush cover 122 has a bearing 120b on the other side of the rotary cleaning body 117.
Is formed. The width of the bearing support 123 is also larger than the width of the bearing support 121. A hook body 124 is provided on the brush cover 122 as shown in FIG.
By rotating the brush 24, the brush cover 122 is configured to be detachable from the lower case 101.

In this embodiment, a brush cover 122 is detachably provided on the lower case 101, and the brush cover 1
22, a bearing support portion 12 formed on the lower case 101 side.
A bearing support 123 wider than 1 was formed. When the rotary cleaning body 117 is mounted, the smaller bearing 120a
Is inserted into the narrower bearing support portion 121 and is covered by the wider bearing support portion 123 formed on the brush cover 122, so that the rotary cleaning body 117 can be easily attached and detached.

A groove 124a is formed on the surface of the hook member 124. A slotted screwdriver, a coin or the like is inserted into the groove 124a to rotate the hook member 124. FIG.
In the case where the position of the groove 124a of the hook body 124 is at the dashed line (closed), the brush cover 122 is fixed to the suction body 1505 and the bearing 12 of the rotary cleaning body 117
0b, and the rotary cleaning body 117 is supported inside the mouthpiece 1505.

When the position of the groove 124a of the hook body 124 is rotated from the position of the dashed line to the position of the solid line (open), the fixed state of the brush cover 122 is released, and the brush cover 122 is moved to the suction body. 1505. As a result, as shown in FIGS. 10 and 11, there is no support for the bearing 120b of the rotary cleaning body 117, and the rotary cleaning body 117 can be easily removed from the mouthpiece 1505, and the hair wrapped around the rotary cleaning body 117. And lint can be easily removed.

Next, the configuration of the intake port will be described. FIG.
8, a plurality of front intake ports 126 a and 12 serving as a first intake port different from the intake port 103 are provided in front of the lower case.
6b is formed. A plurality of rear intake ports 1 serving as a second intake port different from the intake port 103 also behind the upper case 102.
27a and 127b are formed. These front intake ports 126a, 126b and rear intake ports 127a, 127
b is located so as to face the turbine blades 125a and 125b disposed on both sides (both sides) of the brush 118 in the rotation axis direction. Also, the front intake ports 126a, 126b
8, and the rear intake ports 127a and 127b are disposed below and above the rotation center of the rotary cleaning body 117, respectively, as shown in FIG. Moreover, the front intake ports 126a, 126b and the rear intake ports 127a, 127b
Are positioned so that air comes into contact with the blade 119 and the turbine blades 125a and 125b disposed on the rotary cleaning body 117 in the vicinity of the distal ends in the outer peripheral direction. The blade 119 and the turbine blades 125a and 125b provided on the rotary cleaning body 117 are connected to the front intake ports 126a and 126a.
The rotary cleaning body 117 is driven by receiving the air flowing from the air inlet 6b and the rear intake ports 127a and 127b. In the present embodiment, the air flowing from the front intake ports 126a and 126b and the rear intake ports 127a and 127b
9 and the vicinity of the outer peripheral end of the turbine blades 125a and 125b to drive the rotary cleaning body 117, so that the rotational torque increases.

The width of the turbine blades 125a and 125b disposed on both sides (both sides) of the brush 118 in the rotation axis direction is the width in the rotation axis direction of the front intake ports 126a and 126b and the rear intake ports 127a and 127b. Is configured to be wider than the width. Thereby, the front intake port 12
Most of the air that has flowed in through the 6a, 126b and the rear intake ports 127a, 127b can be applied to the blade 119 and the turbine blades 125a, 125b at a high rate, and the rotational torque of the rotary cleaning body 117 is improved.

Further, the blade 119 and the turbine blades 125a, 125b are connected to the front intake ports 126a, 126a.
In order to easily receive the air that has flowed in through the air inlet 6b and the rear air inlets 127a, 127b, it is curved in the anti-rotational direction of the rotary cleaning body 117. The curved blade 119 and the turbine blades 125a and 125b
As the 17 rotates at a high speed, its tip is pushed out in the radial direction of the rotary cleaning body 117 by centrifugal force, and the blade 119 and the turbine blades 125a and 125b are raised. The rising amount varies depending on the rotation speed of the rotary cleaning body 117. Naturally, the higher the rotation speed, the larger the rising amount, and the lower the rotation speed, the smaller the rising amount.

In such a configuration, the front intake port 12
6a, 126b and the air flowing from the rear intake ports 127a, 127b are supplied to the blade 1 provided on the rotary cleaning body 117.
19, and sequentially contacts the turbine blades 125a and 125b to drive the rotary cleaning body 117.

In this embodiment, as shown in FIG. 4, the bumper 10 is disposed above the front intake ports 126a and 126b along the upper ends of the front intake ports 126a and 126b.
4 is located. Moreover, the bumper 104 protrudes forward from the front intake ports 126a and 126b. Thus, even when the front portion of the suction body 1505 is pressed against the wall, the front suction ports 126a and 126b are not blocked by the wall, and the rotation torque of the rotary cleaning body 117 can be secured.

Further, in the present embodiment, the lower case 101
And the upper case 102 and the front intake port 1
Since the air inlets 26a and 126b and the rear air inlets 127a and 127b are provided, the air inlet on the lower case 101 side close to the cleaning surface is blocked by tissue, cloth, dust, or the like during cleaning. Even in this case, the rotary cleaning body can be driven by the air flowing from the upper case-side intake port.

In particular, in the present embodiment, as shown in FIG. 3, the width of the rear intake ports 127a and 127b (the longitudinal direction of the intake body).
Is formed wider than the width of the front intake ports 126a and 126b (the longitudinal direction of the suction body), and the opening area of the rear intake ports 127a and 127b is made larger than the opening area of the front intake ports 126a and 126b.

Thus, even if the front intake ports 126a, 126b formed on the lower case side which are likely to be blocked by tissue, cloth, dust or the like are closed, the upper case side having a large opening area is closed. Rear intake ports 127a, 127b
The rotating cleaning body can be sufficiently driven by the air that has flowed in from the air. As shown in FIG. 8, the air flowing in from the upper case-side rear intake ports 127a and 127b is
7 and the turbine blade 1 disposed at
25a, 125b, flows in the same direction as the rotation direction of the rotary cleaning body 117 along the inner wall of the suction body, and is guided to the cleaner body through the surface to be cleaned, so that the front suction port on the lower case side. Blades 119 and turbine blades 125a, 125b like air flowing in from 126a, 126b.
, The force for driving the rotary cleaning body 117 is greater than the air that is directly guided to the cleaner body side. Therefore,
In the present embodiment, the opening area of the rear intake ports 127a and 127b is made larger than the opening area of the front intake ports 126a and 126b to improve the rotational torque of the rotary cleaning body 117.

In this embodiment, as shown in FIGS. 3 and 8, the front intake ports 126a and 126b and the rear intake ports 127a and 127b are opposed to each other, and
Rotating cleaning body 1 divided vertically about 7 rotating shafts
17 blades 119 and turbine blades 125a,
125b, the front intake ports 126a and 126b and the rear intake port 12
It is possible to efficiently drive the rotary cleaning member 117 without causing turbulence such that the air flowing from the nozzles 7a and 127b negates the driving force for driving the rotary cleaning member 117 in the suction body. This front intake port 126a, 12
6b and the rear intake ports 127a, 127b are:
As shown in FIG. 3, the opposing positions are shifted from each other. The front intake ports 126a and 126b are connected to the rear intake port 12
7a and 127b (on the side of the suction joint 109), the rear intake ports 127a and 127b are
a, 126b. Thus, the front intake ports 126a, 126b and the rear intake ports 127a,
By displacing the opposing positions of the 127b, air can be widely applied to the blade 119 and the turbine blades 125a and 125b disposed on the rotary cleaning body 117, and the rotational torque can be improved. The front intake ports 126a, 126b are connected to the rear intake port 12a.
7a and 127b, which are located on the inner side (on the side of the suction joint 109), flow from the front intake ports 126a and 126b,
Since the air that has driven the rotary cleaning body 117 can be smoothly guided to the suction joint 109 side, the rear suction port 127 can be used.
a, 127b, the flow of the air flowing along the inner wall of the mouthpiece is not obstructed, and problems such as a decrease in rotational torque of the rotary cleaning body 117 due to turbulence and generation of noise can be prevented. .

The front intake ports 126a and 126b are located inside the front wheel 112 (on the side of the intake joint 109) as shown in FIGS. Thereby, the front wheel 1
12, the running of the mouthpiece 100 during cleaning can be stabilized.

Next, the configuration around the rear intake ports 127a and 127b will be described. Rear intake ports 127a, 127b
2, 3, and 5 in the upper case 102 where
As shown in FIG. 5, a raised portion 201 is formed which rises from the outer surface of the upper case 102. In the present embodiment, since the rear intake ports 127a and 127b are formed in the raised portion 201, the flat portion 301 as a nozzle can be made large, and the air flowing from the rear intake ports 127a and 127b can be lengthened smoothly. Nozzle performance can be improved.

In the present embodiment described above, the front intake ports 126a, 126b and the rear intake ports 127a, 127
Although an example having b has been described, the intake port is not limited to this, and may be arbitrarily provided as needed. For example, either one of the front intake port and the rear intake port may be used, and the intake port may be formed at the upper part of the intake body without being limited to the front part and the rear part. Further, in addition to the above alternative, the air inlet may be formed on one of the left and right sides in the longitudinal direction of the suction body.

In this embodiment, the front intake port 12
6a and 126b are formed in the lower case 101 and the rear intake ports 127a and 127b are formed in the upper case 102. Conversely, the front intake ports 126a and 126b are formed.
b is formed in the upper case 102, and the rear intake ports 127a, 127a
27b may be formed in the lower case 101.

As described above, according to this embodiment, the blade 119 and the brush 118 are disposed on the rotary cleaning body 117, and the brush 118 is provided on both sides (both sides) of the rotary cleaning body 117 in the axial direction. Turbine blades 125a, 125
b, the front intake ports 126a, 126
26b and the air that has flowed in from the rear intake ports 127a and 127b are supplied to the blade 119 and the turbine blades 125a,
125b, and the rotational torque of the rotary cleaning body 117 can be improved.

Further, according to the present embodiment, the bumper 104 is located along the upper end of the front intake ports 126a, 126b, and the bumper 104 is connected to the front intake port 12a.
6A and 126B, the front suction ports 126A and 126B are not blocked by the wall even when the front part of the suction body 1505 is pressed against the wall. The rotation torque can be secured, and the dust on the wall can be scraped out efficiently.

Further, according to the present embodiment, the front intake ports 126a and 126b and the rear intake ports 127a are divided into the lower case 101 and the upper case 102, respectively.
Since 127b is provided, even if one or all of the front intake ports 126a and 126b on the lower case 101 side close to the cleaning surface during cleaning are closed, the upper case side intake port is closed. The rotating cleaning body can be driven by the inflowing air.

Further, according to the present embodiment, the rear intake air flows in the same direction as the rotation direction of the rotary cleaning body 117 along the inner wall of the suction body, and is guided to the cleaner body through the surface to be cleaned. The opening area of the ports 127a and 127b is
26a and 126b are larger than the opening area.
The rotational torque of the rotary cleaning body 117 can be improved.

Furthermore, according to the present embodiment, the front intake ports 126a, 126b and the rear intake ports 127a, 127a, 1b.
27b is opposed to the blade 119 and the turbine blades 125a and 125b of the rotary cleaning body 117, which are divided in the vertical direction about the rotation axis of the rotary cleaning body 117. Rear intake ports 126a, 126b and rear intake ports 127a, 127
It is possible to efficiently drive the rotary cleaning body 117 without causing turbulence such that the air flowing in from b cancels the driving force for driving the rotary cleaning body 117 in the mouthpiece.

Further, according to this embodiment, the front intake ports 126a, 126b and the rear intake ports 127a, 127a, 1b.
By displacing the opposing position of 27b, air can be widely applied to the blade 119 and the turbine blades 125a and 125b disposed on the rotary cleaning body 117, and the rotational torque can be improved.

Further, according to the present embodiment, the front intake ports 126a and 126b are located inside the front wheel 112 (on the side of the suction joint 109), so that the front wheel 1
12, the running of the mouthpiece 100 during cleaning can be stabilized.

Furthermore, according to the present embodiment, a raised portion 201 is formed which rises from the outer surface of upper case 102, and rear intake ports 127a, 127 are formed in raised portion 201.
Since b is formed, the flat portion 301 as a nozzle can be made large, the air flowing in from the rear intake ports 127a and 127b can be lengthened smoothly, and the performance of the nozzle can be improved.

Next, a second embodiment according to the present embodiment will be described with reference to FIGS.

FIG. 13 is an enlarged view of a main portion of the lower surface of the suction body 1505, and FIG. 14 is a view showing a relationship between the twisting operation of the hose hand portion 1503 and the direction of the suction body 1505.

As described in the previous embodiment, the mouthpiece 1505 according to the present embodiment is a first joint that is rotatable with respect to the mouthpiece main body 100 upward by about 90 degrees from the floor surface. The casing 108 is connected to an inlet joint 109 which is connected to the casing 108 and serves as a second joint which is rotatable in the left-right direction with respect to the inlet main body 100. And
As shown in FIG. 14A, when the hose hand portion 1505 is twisted counterclockwise when viewed from the user, the mouthpiece 1505 rotates about 90 degrees counterclockwise. Similarly, as shown in FIG. 14B, when the hose hand portion 1505 is twisted clockwise as viewed from the user, the mouthpiece 1505 rotates clockwise by about 90 degrees.
In this state, the suction body 1505 can be operated along the longitudinal direction, and the suction body 1505 can be put in a narrow gap or the like for cleaning. Thus, the mouthpiece 1505
Is operated along the longitudinal direction, the suction body 1505
Is different from the direction of rotation of the wheel that is disposed below the mouthpiece 1505 and rotates in the short direction. When the mouthpiece 1505 is moved in the longitudinal direction in this way, the wheels are worn and the operating force of the mouthpiece increases. For this reason,
In order to reduce the wear of the wheel and the operation force of the suction body, it has been considered to cover the wheel of the suction body with a brush or the like to reduce the frictional resistance.

However, even if the frictional resistance of the wheel is aimed at, the rotational direction of the wheel and the moving direction of the suction body are different, so that when the suction body is used for a long time, as shown in FIG. Wear portions 1301 are generated on wheels such as the wheels 113. If the mouthpiece is continuously used in this state, the floor surface may be damaged during cleaning, or a noise such as a rumbling noise may be generated.

Therefore, in the present embodiment, worn wheels can be easily replaced.

In FIG. 13A, one end side of the axle 113a of the rear wheel 113 is covered with a shaft cover 114. The shaft cover 114 is fixed to the lower case 1 by screws 115.
01 is fixed. In this state, the rear wheels 11
In the case where the abrasion part 1301 occurs in the third part 3, the screw 115 is removed and the shaft cover 114 is removed from the lower case 101 of the mouthpiece main body 1505 as shown in FIG. Then, the axle 113a of the rear wheel 113 is extracted from the wheel bearing 1302 formed on the lower case 101, and the rear wheel 113 is removed. When installing a new rear wheel 113, FIG.
As shown in (c), the axle 113b side of the rear wheel 113 is inserted into an axle hole 1303 formed in the lower case 101, and the axle 1
13a is inserted into the wheel bearing 1302. After inserting the axle 113a into the axle bearing 1302, the axle 113a is
And lower the shaft cover 114 with the screw 115.
Fixed to.

In the embodiment described above, the rear wheels 1
13 has been described as being detachable, but the detachable wheels are not limited to the rear wheel 113 only.
For example, a wheel such as the front wheel 112 disposed below the mouthpiece may be similarly configured.

According to the present embodiment, the rear wheels 113 can be easily attached and detached. Therefore, even if the rear wheels 113 have a worn portion 1301, the rear wheels 113 can be easily replaced, and the floor can be easily replaced. It is possible to prevent the generation of noise such as scratching the surface and rumbling noise.

[0058]

As described above, according to the present invention, it is possible to provide a vacuum cleaner having a suction body in which the rotational torque of the rotary cleaning body is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a mouthpiece 1505 according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a mouthpiece 1505 according to one embodiment of the present invention.

FIG. 3 is a top view of a mouthpiece 1505 according to one embodiment of the present invention.

FIG. 4 is a front view of a mouthpiece 1505 according to one embodiment of the present invention.

FIG. 5 is a rear view of the mouthpiece 1505 according to one embodiment of the present invention.

FIG. 6 is a bottom view of the mouthpiece 1505 according to one embodiment of the present invention.

FIG. 7 is a sectional view taken along line AA in FIG. 6;

FIG. 8 is a sectional view taken along the line BB in FIG. 6;

FIG. 9 is an enlarged view of a main part of a hook body 124 on a lower surface of a mouthpiece 1505.

FIG. 10 shows a rotary cleaning body 117 from the lower surface of a mouthpiece 1505.
FIG. 6 is a bottom perspective view of the mouthpiece showing a state in which is removed.

FIG. 11 is a bottom perspective view of the suction body showing a state where the brush cover 122 and the rotary cleaning body 117 are removed from the suction body 1505.

FIG. 12 is an enlarged view of a main part of the rotary cleaning body 117.

FIG. 13 is an enlarged view of a main part of a lower surface of a mouthpiece 1505.

FIG. 14 shows a twisting operation of the hose hand portion 1503 and the mouthpiece 1
FIG. 10 is a diagram illustrating a relationship with a direction of a reference numeral 505.

FIG. 15 is an external perspective view of the vacuum cleaner according to one embodiment of the present invention.

[Explanation of symbols]

100: suction body, 101: lower case, 102: upper case, 103: suction port, 104: shock absorbing bumper, 10
8 ... casing, 109 ... suction joint, 109 ... front wheel,
112: front wheel, 112a: axle, 113: rear wheel, 1
13a: axle, 114: axle cover, 115: screw, 11
7: rotating cleaning body, 118: brush, 119: blade, 1
19a: brush, 120a, 120b: bearing, 121, 1
Reference numeral 23: bearing support, 122: brush cover, 124: hook body, 125a, 125b: turbine blade, 12
6a, 126b front intake port, 127a, 127b rear intake port, 1301 worn portion, 1302 vehicle bearing, 13
03 ... axle hole, 1501 ... cleaner body, 1503 ... hose hand, 1504 ... extension tube, 1505 ... mouthpiece.

Continuing from the front page (72) Inventor Naofumi Kitagawa 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi Taga Electronics Co., Ltd. (72) Inventor Susumu Sato 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture, Ltd. (72) Inventor Shigenori Sato 502, Kandachi-cho, Tsuchiura-shi, Ibaraki F-term in Machinery Research Laboratory, Hitachi, Ltd. F-term (reference) 3B061 AA41 AD05 AE05 AH04

Claims (5)

[Claims] 1. A suction body formed by arranging an upper case in a lower case having a suction port on a lower surface, a rotary cleaning body provided in a suction port of the suction body, and a front portion of the lower case. A first intake port formed on the side of the rotating cleaning body to allow air to flow in below the rotation axis of the rotary cleaning body; and a second intake port formed on the rear side of the upper case to allow air to flow in below the rotation axis of the rotary cleaning body. An electric vacuum cleaner having two intake ports. 2. A suction body formed by arranging an upper case on a lower case having a suction port on a lower surface, a rotary cleaning body provided at a suction port of the suction body, and a front part of the lower case. A first intake port formed on the side of the rotating cleaning body to allow air to flow in below the rotation axis of the rotary cleaning body; 2. An electric vacuum cleaner comprising: a second suction port; and an opening area of the second suction port is larger than an opening area of the first suction port. 3. A suction body formed by arranging an upper case on a lower case having a suction port on a lower surface, a rotary cleaning body provided on a suction port of the suction body, and a front part of the lower case. A first intake port formed on the side of the rotating cleaning body to allow air to flow in below the rotation axis of the rotary cleaning body; and a second intake port formed on the rear side of the upper case to allow air to flow in below the rotation axis of the rotary cleaning body. The rotary cleaning body has a blade disposed along the axial direction of the rotary cleaning body, and a brush disposed along the axial direction of the rotary cleaning body. A vacuum cleaner wherein turbine blades are disposed on both sides of the brush in the axial direction, and the first intake port and the second intake port are opposed to the turbine blade. 4. A suction body formed by arranging an upper case on a lower case having a suction port on a lower surface, a rotary cleaning body provided at a suction port of the suction body, and a front part of the lower case. A first intake port formed on the side of the rotating cleaning body to allow air to flow in below the rotation axis of the rotary cleaning body; and a second intake port formed on the rear side of the upper case to allow air to flow in below the rotation axis of the rotary cleaning body. An electric vacuum cleaner, comprising: two suction ports, wherein positions at which the first suction port and the second suction port face each other are shifted from each other. 5. The vacuum cleaner according to claim 4, wherein the first air inlet is located inside the second air inlet.