JPH09187405A - Electric vacuum cleaner - Google Patents

Abstract

(57) Abstract: In a conventional rotary cleaning body, a sliding member arranged in the rotary cleaning body is arranged in a direction of a line of the rotary cleaning body. The resistance increased, and it was not possible to obtain sufficient rotational force to scrape up the dust. A feature of the present invention is that a suction body formed by disposing an upper case on a lower case having a suction port on a lower surface, and a rotary cleaning body disposed on the suction port of the suction body. Drive means for driving the rotary cleaning body, and a casing having a suction passage arranged at a rear portion of the suction port main body,
A suction body having a suction joint arranged at a rear portion of the casing, wherein the rotary cleaning body has a sliding member that slides on a cleaning surface, and a rotating body that fixes the sliding member. The sliding member is provided in an electric vacuum cleaner including a suction body arranged so as to be inclined in a counter-rotational direction of the rotary cleaning body with respect to a normal direction of the rotary body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with a suction body in which a rotary cleaning body is provided, and more particularly to a vacuum cleaner for reducing the rotation resistance of a rotary cleaning body from a surface to be cleaned.

[0002]

2. Description of the Related Art A suction body used in a conventional electric vacuum cleaner is formed in a thin plate shape like a sliding contact piece of a rotary cleaning body (rotary brush) disclosed in Japanese Patent Publication No. 4-45173. The sliding contact piece was arranged toward the normal line direction of the rotating body.

[0003]

In the technique described in Japanese Patent Publication No. 4-45173, the sliding contact piece of the rotary cleaning body (rotary brush) of the suction body has a thin plate-shaped cross section and receives a rotation resistance received from the cleaning surface. However, since the sliding member arranged on the rotary cleaning body is arranged in the direction of the rotary cleaning body, the resistance becomes large especially for carpets with long naps, and dust is scraped up. I couldn't get enough torque.

Further, if the wall thickness of the sliding contact piece is made extremely thin in order to further reduce the rotation resistance received from the cleaning surface, the effect of scraping up the dust on the carpet is reduced, and the sliding contact piece is broken. was there.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to reduce the rotational resistance received by a rotary cleaning member even in a carpet with long fluff and to scrape up dust regardless of the type of surface to be cleaned. An object of the present invention is to provide an electric vacuum cleaner provided with a suction body that can obtain a necessary rotating force of a rotary cleaning body.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a feature of the present invention is that a suction body formed by arranging an upper case in a lower case having a suction port on a lower surface;
A rotary cleaning member disposed at the suction port of the suction port main body, a driving means for driving the rotary cleaning member, a casing having a suction passage disposed at the rear portion of the suction port main body, and a casing arranged at the rear portion of the casing. And a rotary member for fixing the sliding member, wherein the sliding member has the above-mentioned sliding member. The vacuum cleaner is provided with a suction body that is arranged to be inclined in a direction opposite to the rotation direction of the rotary cleaning body with respect to the normal direction of the rotary body.

[0007]

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

FIG. 14 is a perspective view of the external appearance of a vacuum cleaner according to one embodiment of the present invention. Reference numeral 201 denotes a vacuum cleaner main body in which a control circuit, an electric blower and the like are built, and 202 denotes a vacuum cleaner main body. The hose connected to the suction port, 203 is a hose hand that is gripped by the user and connects the hose to one end, 204 is an extension tube connected to the other end of the hose hand 203, and 205 is an extension tube 204. Connected mouthpiece, 2
Reference numeral 06 denotes a switch operating portion provided on the hose hand portion 203, reference numeral 207 denotes a first infrared light emitting portion provided on the hose hand portion 203, reference numeral 208 denotes a second infrared light emitting portion provided on the hose hand portion 203, and reference numeral 209 denotes An infrared light receiving unit provided on the upper surface of the cleaner main body 201 has a ceiling 210 in the room.

Next, the operation of the electric vacuum cleaner according to the present invention will be described.
When one of the switch operation units 206 provided in the first unit is pressed, a signal code corresponding to the pressed switch is converted into an infrared signal as the first infrared light emitting unit 207 and the second infrared light emitting unit 20.
Emitted from 8.

The first infrared ray emitting section 207 is arranged so as to face substantially vertically upward in a normal use state, and the infrared signal emitted from the first infrared ray emitting section 207 is directed to the ceiling or wall of the room. It hits and reflects, and reaches the infrared light receiving section 209 of the cleaner body 201.

Further, the second infrared emitting section 208 is arranged at the grip end of the hose proximal portion so as to face downward from substantially horizontal, and the infrared signal emitted from the second infrared emitting section 208 is It directly reaches the infrared light receiving section 209 of the cleaner body 201. The infrared signal that has reached the infrared light receiving unit 209 controls the vacuum cleaner via a control circuit built in the cleaner main body 201.

The cleaner according to the present embodiment transmits the operation information input by the user to the cleaner main body 201 by using an infrared signal as described above to control the cleaner. Since a power supply line is not used for the hose 202, 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 rotating brush is rotated with a turbine rotating by a suction airflow of an electric blower as a driving source is mainly used.

This embodiment relates to the improvement of such a suction body, and FIG. 1 shows a suction body 2 according to an embodiment of the present invention.
2, FIG. 2 is a sectional view taken along the line AOA of FIG. 1, FIG. 3 is a top view of the suction body 205 with the suction port cover 106 removed, and FIG. 4 is a rear view of the suction body 205 in FIG. FIG. 5 is a top view of the mouthpiece 205, and FIG.
FIG.

In FIG. 1 to FIG. 6, a suction main body 101 serving as a skeleton of a suction body 205 is divided into upper and lower parts at a substantially central height position, and a lower case 102 forming an outer shell is formed.
And an upper case 103 disposed at the upper rear of the lower case 102.

A shock absorbing bumper 104 is attached to the outer periphery of the position where the lower case 102 and the upper case 103 come into contact with each other to maintain airtightness and prevent damage to furniture and the like.

At the upper front of the suction body 101, a suction port 1 is provided.
A suction port cover 106 that covers 05 is detachably arranged.

A vertically movable casing 107 is provided at the rear end of the mouthpiece body 101, and a rotatable mouthpiece joint 108 is connected to the tip of the casing 107.

In the lower case 102, as shown in FIG.
A pair of front wheels 109 and a pair of rear wheels 110 so as to move the entire suction body 205 in the front-rear direction and maintain a constant distance between the lower surface of the suction body 205 and the cleaning surface, and a cleaning surface during use of the cleaner. Roller 111 for receiving the pressure with respect to.

In addition, a suction port 1 is provided before and after the lower case 102.
Pressure control plates 112 and 113 for holding the suction pressure in 05
Are arranged.

Here, the front wheel 109 and the rear wheel 110 are arranged at positions facing each other.

A pair of opening / closing levers 114 that slide in the horizontal direction are provided inside the inlet cover 106, and can be removed from the lower case 102 and the upper case 103 by operating these levers.

A rotary brush 115 for scraping up dust and the like is provided inside the mouthpiece 205. The rotary brush 115 is formed by disposing a flexible blade 1 having a high dust scraping effect and a brush 2 having a high wiping effect such as nylon in a groove 4 provided in the outer peripheral axis direction of the rotary core 3. A rotary shaft 116 is press-fitted at both ends thereof, and is rotatably supported by a slide bearing 117.

The slide bearing 117 is press-fitted into a bearing cover 118 and is held by a pair of opposed support ribs 119 provided on the lower case 102.

A turbine 120A is inserted into two left and right rotating shafts 116 press-fitted at both ends of the rotating brush 115.

Further, a turbine 120B is arranged so as to face the turbine 120A, and the turbine 120 is constituted by these two turbines 120A and 120B. The joint surface between the turbine 120A and the turbine 120B is firmly fixed by ultrasonic welding.

The turbine 120 used in this embodiment is
Thus, the two turbines 120A and 120B
By this, it becomes easy to create a mold for molding the turbine.

Next, the means for rotating the rotary brush 115 will be described. FIG. 7 is a sectional view taken along the line BB of the suction body 205 in FIG. 1, FIG. 8 is a rear view of the suction port cover 106, and FIG. FIG. 10 is a rear view of the cover 106 (partly taken along the line CC in FIG. 5). FIG. 10 is a cross-sectional view taken along the line DD in FIG. 8, and FIG.

As shown in FIG. 7, the suction body 205 of this embodiment has a number of nozzles 121, 122 (hereinafter, multi-blade nozzles 121, 12) for blowing air toward the turbine 120.
2) is disposed so as to substantially cover the outer periphery of the turbine 120.

The multi-blade nozzles 121 and 122 are arranged so as to be divided into upper and lower parts.
As shown in FIGS. 8 and 11, the lower multi-blade nozzle 122 is fixed to the lower case 1 as shown in FIGS.
02 is fixed by screws 124.

Here, the multi-blade nozzles 121 and 122 are arranged so as to blow air to the turbine 120B, and the air moves to the turbine 120A and moves to the suction port 105.
It is designed to flow into.

As described above, a pair of front wheels and 10
9 and a pair of rear wheels 110 are located so as to keep a constant clearance between the suction port 105 below the turbine 120 and the cleaning floor.

Next, the operation for rotating the rotating brush 115 will be described. The air blown to the turbine 120 is supplied to a large number of passages provided at the rear of the upper case 103 of the suction body 205 as shown in FIGS. Air is sucked from a rear intake port 125 having pores and an upper intake port 126 having a large number of ventilation holes provided above the upper case 103 of the suction body 205.

Rear inlet 125 and upper inlet 126
Are the corners of the air inlet (the rear end of the rear air inlet 125 and the upper end of the upper air inlet 126) to ensure the strength of the air inlet itself.
The air holes are not formed in the holes. This allows
The strength of the suction port itself having a large number of ventilation holes can be ensured.

FIG. 12 is a cross-sectional view of the rear intake port 125. The rear intake port 125 is formed so as to be approximately half the plate thickness of the upper case 103, and the upper case 103 having a reduced plate thickness is formed. A vent hole 127 is formed in the intake port of the air conditioner.

A thick rib 10 is provided between the intake ports.
Since 3A is formed, even if a shock is applied to the vicinity of the rear intake port 125 or the upper intake port 126, it is protected by the rib 103A having a large plate thickness, so that the intake port having a small plate thickness can be prevented from being damaged. it can.

As shown in FIG. 1, a partition wall 128A formed by the front wall of the lower case 102 and the front wall of the upper case 103, and an outer wall of the lower case 102 and an outer wall of the upper case 103 are formed at the rear of the suction body 205. Ventilation passage 129
A is provided.

Further, a partition wall 128B and a ventilation path 129B are similarly formed on the front side of the rotating brush 115.

As shown in FIG. 1 and FIG. 7, the air taken in from the ventilation holes of the rear intake port 125 and the upper intake port 126 passes through a ventilation passage 129A and is guided by a guide wall 130 formed integrally with the lower case 102. It is narrowed down, guided to the multi-blade nozzles 121 and 122, and blown to the turbine 120.

Most of the air sucked from the rear inlet 125 and the upper inlet 126 is supplied to the multi-blade nozzle 121.
Of the multi-blade nozzle 121 and the multi-blade nozzle 122, almost no air flows.

Therefore, in this embodiment, air is also supplied to the front side of the multi-blade nozzle 121 and the multi-blade nozzle 122 to
In order to improve the torque of the rotating brush 20 (rotating brush 115), an air inlet 131 is provided on the side surface of the suction body 205 (suction cover 106) as shown in FIGS.

By providing the air inlet 131, air also flows to the front side of the multi-blade nozzle 121 and to the multi-blade nozzle 122, and the turbine 120 (the rotating brush 11)
5) It is possible to improve the torque. The number and positions of the air introduction holes can be appropriately selected as needed.

The air blown to the turbine 120 flows through the turbine 120 as shown in FIG.
5 and is guided to the cleaner body through a casing 107 and a suction joint 108 located substantially at the center of the suction port 105.

On the other hand, air containing dust is guided from the suction port 105 through the casing 107 and the suction port joint 108 to the cleaner body.

In the suction body 205 of the present embodiment, the air sucked from the ventilation holes of the rear suction port 125 and the upper suction port 126 of the suction body flows into the turbine 120, and the casing 107 and the suction port pass from substantially the center of the suction port 105. Since the air is sucked into the cleaner body through the joint 108, the air moves to the center while rotating at high speed in the suction port 105, and a swirling flow is generated.

The generated swirling flow swirls in the rotating direction of the rotating brush 115 and hits the blade 1 of the rotating brush, thereby improving the torque of the rotating brush 115. At this time, since the blade 1 is bent in the anti-rotation direction of the rotating brush 115, the swirling flow can be efficiently used to increase the torque.

According to this embodiment, the rear intake port 1 of the intake body is provided.
The turbine 120 and the rotary brush 115 are rotated by the air sucked from the air holes 25 and the upper air inlet 126, and the swirling flow generated in the air inlet 105 allows the dust to be absorbed while the dust on the cleaning surface is wound up. , Dust collection performance can be greatly improved.

In the mouthpiece of this embodiment, when the mouthpiece is lifted from the cleaning surface during use, most of the air is sucked in from the suction port 105, and the rear suction port 125 and the upper suction port of the suction body. Since the amount of air sucked from the ventilation holes 126 decreases, the rotation speed of the turbine 120 and the rotating brush 115 decreases.

Thus, the drawback of the conventional air turbine type suction body, in which the load is reduced and the air turbine rotates at high speed to generate noise, can be eliminated.

Further, the suction body of this embodiment automatically has the turbine 120 and the rotating brush 115 depending on the type of the cleaning surface.
Is changed.

For example, when the cleaning surface is a floor or a tatami mat, the lower surface of the suction body 205 and the floor surface are controlled by front wheels 109 and rear wheels 110 and rollers 111 disposed on the lower surface of the suction body 205. Alternatively, a predetermined gap is formed in the tatami mat, the amount of air sucked from the suction port 105 increases, and the amount of air sucked from the ventilation holes of the rear suction port 125 and the upper suction port 126 of the suction body decreases.
Since the number of rotations of the rotating brush 115 and the rotating brush 115 decreases, the floor surface can be prevented from being damaged by the rotating brush 115.

When the cleaning surface is carpet, the lower surface of the suction body 205 is in close contact with the carpet, and the suction port 105 is closed.
Reduces the amount of air sucked in from the rear intake port of the suction body
Since the air sucked from the ventilation holes of the upper and lower intake ports 126 increases, the turbine 120 and the rotating brush 11
As the number of rotations increases, a swirling flow is generated.

Thus, the dust on the carpet can be scraped out by the rotating brush 115, and the dust can be wound up by the swirling flow, thereby improving the dust collection efficiency.

As described above, the mouthpiece of this embodiment automatically changes the rotation speed of the turbine 120 and the rotary brush 115 depending on the type of the cleaning surface. This eliminates the need for a switching lever for manually switching the amount of air to be blown to the air turbine in accordance with the cleaning surface that was required for the above, and improves operability.

The front wheel 1 is provided on the lower surface of the mouthpiece of this embodiment.
09 and a rear wheel 110 are left and right, and a five-point wheel in which a roller 111 is disposed at the rear center.

This is because when the contact surface between the lower surface of the mouthpiece and the cleaning surface becomes unstable, the amount of air flowing through the turbines 120 disposed on the left and right sides of the rotary brush 115 becomes uneven,
The rotation speeds of the rotating brush 115 and the turbine 120 become unstable (the torque fluctuates), and the dust collection efficiency decreases.

Therefore, a five-point wheel is used to stably maintain the contact surface between the lower surface of the suction body and the cleaning surface so that air flows uniformly through the turbine 120.

As a result, the amount of air flowing through the left and right turbines 120 becomes substantially uniform, the rotation speeds of the rotating brush 115 and the turbine 120 are stabilized, and a reduction in dust collection efficiency can be prevented.

Next, a description will be given of a method of maintaining the mouthpiece of this embodiment.

As described above, the suction body 205 of the present embodiment is provided above the suction port 105 of the suction body.
6 are provided. The suction port cover 106 has an opening / closing lever 114 that slides laterally inside the suction port cover 106, and by operating this, the lower case 1
02 and the upper case 103. Further, a concave portion 132 is formed on a side surface of the suction body 205 (suction port cover 106). Then, the suction port cover 10
In order to remove 6, the index finger or the middle finger is first inserted into the recess 132, the thumb is hooked on the opening / closing lever 114, the opening / closing lever 114 is slid outward to release the engagement, and the thumb and the index finger (middle finger) Remove while picking.

According to the present embodiment, since the opening / closing lever 114 that slides in the lateral direction is provided inside the suction port cover 106, the opening / closing lever 114 can be opened by external force even when it comes into contact with furniture or the like during cleaning. Can be protected.

The suction body 205 (suction port cover 10)
Since the concave portion 132 is provided on the side surface of 6),
The index finger or the middle finger is inserted into the concave portion 132, the thumb is hooked on the opening / closing lever 114, the opening / closing lever 114 is slid outward to release the engagement, and the thumb and the index finger (middle finger) are picked up. It can be easily removed from the suction body 205.

Further, the multi-blade nozzle 121 is provided with the suction port cover 1.
06, and the multi-blade nozzle 122 is also screwed to the lower case 102.
Is removed, only the rotating brush 115 and the turbine 120 are removed for cleaning, which is extremely convenient.

Next, FIG. 15 shows an enlarged cross-sectional view of the rotating brush 115 of this embodiment.

The rotating brush 115 divides the blade 1501 and the brush 1502 into the groove 150 of the rotary core 1503.
4 and project from the outer peripheral surface. Blade 15
01 is formed of an elastic material such as rubber or soft vinyl chloride, and has a fixed portion 1505 at the base and a sliding contact portion 1506 formed in a thin plate shape from the base toward the tip. A projection 1507 for scraping up dust is formed on the tip side of the sliding contact portion 1506 over the entire width direction of the blade 1501. Then, by inserting the fixing portion 1505 into the groove 1504 of the rotary core 1503,
The blade 1501 is fixed to the rotary core 1503. A protrusion 1507 for scraping up dust is formed at the tip of the sliding portion 1506 over the entire width of the blade 1501.

The brush 1502 is implanted in the brush table 1508, and the brush 1502 is fixed to the rotary core 1503 by inserting the brush table 1508 into the groove 1504.

The rotating brush 115 used in this embodiment
Uses the turbine 120 directly connected to the rotating brush 115 as a driving source as described above. Since the turbine 120 rotates by utilizing the suction airflow generated by the electric blower, the rotational force of the turbine 120 is greatly influenced by the airflow of the suction airflow and the resistance of the surface to be cleaned. For this reason, in the state of the surface to be cleaned, for example, on a carpet with long hairs, the rotating brush 1
15 is subjected to a large resistance, and this resistance is applied to the turbine 12.
However, there is a disadvantage that the rotating brush 115 is stopped and dust on the carpet cannot be scraped out.

Therefore, in this embodiment, in order to reduce this resistance, the sliding contact portion 1506 of the blade 1501 is formed in a shape that is bent in the anti-rotation direction of the rotating brush 115. Since the blade 1501 is flexible, when the rotating brush 115 rotates, the blade 1501 receives centrifugal force due to the rotation, and the sliding contact portion 1506 of the blade 1501 rises in the normal direction of the rotary core 3 to clean the cleaning surface. Sliding contact can scrape up dust. This rising amount differs depending on the type of the surface to be cleaned.
, The centrifugal force generated is also small, and the surface to be cleaned is slid in a state where the rising amount of the blade 1501 is small. The resulting centrifugal force also increases, and the surface to be cleaned is slid in contact with the blade 1501 with a large rising amount. Further, since a protrusion 1507 for scraping up dust is formed at the tip of the sliding contact portion 1506 over the entire width of the blade 1501, dust can be scraped out efficiently.

The dimensional relationship of the rotating brush 115 is as follows.
The outer diameter of the blade 1501 when the sliding contact portion 1506 is bent is a, the outer diameter of the brush 1502 is b, and the rotating brush.
The sliding portion 1506 is rotated by the rotation of the
Assuming that the outer diameter dimension in the state of rising in the normal direction of 03 is c, the relationship is a <b, b <c.

Further, the suction force of the electric blower is
In a thin carpet that sticks to 05,
Since the rotation speed of the rotating brush 115 is low, the blade 150
1 hardly rises. Therefore, the blade 1501
Does not have the effect of scraping lint or hair from carpet.
In this case, the brush 15 having an outer diameter dimension b larger than the outer diameter dimension a in a state where the sliding contact portion 1506 of the blade 1501 is bent.
02 is used to scrape lint and hair of the carpet.

Further, the shape of the blade 1501 is such that a projection 1507 is formed at the tip thereof.
Becomes a weight and the blade is rotated by the rotating brush 115.
It makes it easy for 1501 to rise in the normal direction.

According to this embodiment, the number of revolutions changes according to the type of the surface to be cleaned, and the rising amount of the blade 1501 changes accordingly. Also in this case, the resistance of the rotating brush 115 received from the surface to be cleaned can be reduced, and the rotation required for scraping up lint or hair on the carpet can be secured.

In the suction body of this embodiment, a swirl flow is generated in the suction port 105 as described above, so that the bent blade 1501 functions as an impeller, and the swirl flow is generated. It is possible to scrape up the dust and increase the rotating force of the rotating brush.

Next, another embodiment according to the present invention will be described with reference to FIGS.

The rotating brush 115 of this embodiment has a brush 1602 at the tip of a blade 1601. As shown in FIG. 16, the brush 1602 has a blade 1601 cut out into two, and the brush 1602 is arranged in the cut-out portion. Then, as shown in FIG.
1 and a part of the contact surface between the brush 1602 and the brush 1602 are sewn together with a thread 1701 over the entire width direction of the blade 1601. Predetermined position 1702 from both ends of the stitching surface
Up to this time, reverse stitching is performed to increase the strength of the seam and to prevent the thread from loosening. Further, before and after the sewing portion of the thread 1701, the blade 1601
A protrusion 1603 is formed over the entire area in the width direction. The protrusion 1603 is provided to prevent yarn breakage caused by the yarn 1701 protruding on the outer peripheral surface of the blade 1601 coming into contact with the surface to be cleaned, and the rotary brush 115 rotates to cause the blade 1601 to rotate.
Even when the object comes into contact with the surface to be cleaned, the surface to be cleaned comes into contact with the protrusion 1603, so that the thread 1701 can be protected.

In this embodiment, the blade 1601 is notched in two, and the brush 1602 is arranged in this notched portion. However, a part of the contact surface between the blade 1601 and the brush 1602 is simply sewn together or an adhesive or the like is used. You may make it adhere by.

According to this embodiment, a part of the contact surface between the blade 1601 and the brush 1602 is sewn with the thread 1701 over the entire area in the width direction of the blade 1601, and the front and rear portions of the seam are formed over the width of the blade 1601. Since it is protected by the projection 1603,
In addition to the effects of the previous embodiment, the yarn 1701 can be protected.

FIGS. 18 and 19 show another embodiment according to the present invention.

In this embodiment, in addition to the blade 1501, the brush 1801 is formed by bending in the anti-rotational direction. Brush 1
801 is implanted in the brush table 1802, and the brush 1502 is fixed to the rotary core 1503 by inserting the brush table 1508 into the groove 1504. And FIG.
As shown in the figure, the bent portion of the brush 1801 is made thinner and the tip is made thicker.

According to this embodiment, since the curved portion of the brush 1801 is made thin and the tip is made thick, the brush by the centrifugal force generated by the rotation of the rotary brush 115 is added to the effect of the previous embodiment. 1801 can be easily made to rise in the normal direction.

In the above embodiments, the suction body having the turbines 120 at both ends of the rotary brush 115 has been described. However, as shown in FIG. 20, the air turbine 2001 is provided inside the suction body. It can also be used as a suction body that drives the rotating brush 115 via the belt 2002. In this case, since the load applied to the rotating brush can be reduced, the difference in the number of rotations of the rotating brush 115 (air turbine) on various cleaning surfaces can be suppressed, so that a low-noise suction body can be provided.

Although not shown, the rotary brush can also be used as a power brush type suction body driven by an electric motor. When the present invention is used for a power brush, the load applied to the electric motor as well as the load applied to the rotating brush can be reduced, so that the life of the electric motor can be prolonged and the power consumption of the electric motor can be suppressed.

[0083]

As described above, according to the present invention, the blade, brush or the like disposed on the rotary cleaning member is formed by bending in the counter-rotational direction of the rotary cleaning member. (EN) Provided is an electric vacuum cleaner having a suction body which can reduce resistance received from a surface to be cleaned, and can obtain a rotation necessary for scraping dust on a carpet, especially in a carpet with long naps. You can

[Brief description of the drawings]

FIG. 1 is a top sectional view of a mouthpiece 205 according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AOA in FIG.

FIG. 3 is a top view of the suction body 205 with the suction port cover 106 removed.

FIG. 4 is a rear view of the mouthpiece 205 in FIG.

FIG. 5 is a top view of the mouthpiece 205.

FIG. 6 is a bottom view of the mouthpiece 205.

FIG. 7 is a cross-sectional view taken along the line BB of the mouthpiece 205 of FIG.

FIG. 8 is a rear view of the suction port cover 106 of the suction body 205.

9 is a rear view of the suction port cover 106 (partly a cross-sectional view taken along line CC in FIG. 5).

FIG. 10 is a sectional view taken along the line DD in FIG. 8;

11 is a sectional view taken along the line EE in FIG. 8;

FIG. 12 is a partially enlarged view of a rear intake port 125;

FIG. 13 is a side view of the mouthpiece 205.

FIG. 14 is a perspective view showing an external appearance of a vacuum cleaner according to one embodiment of the present invention.

FIG. 15 is an enlarged cross-sectional view of a rotary brush 115 according to an embodiment of the present invention.

FIG. 16 is a rotary brush 115 according to another embodiment of the present invention.
FIG.

FIG. 17 is a side view of the blade 1601 in FIG.

FIG. 18 is a rotary brush 115 according to another embodiment of the present invention.
FIG.

FIG. 19 is an enlarged view of a fiber of a brush 1801 in FIG. 18;

FIG. 20 is a plan view of another mouthpiece according to one embodiment of the present invention.

[Explanation of symbols]

101: suction body, 102: lower case, 103: upper case, 105: suction port, 106: suction port cover, 107 ...
Casing, 108 ... Suction joint, 109 ... Front wheel, 11
0: rear wheel, 111: roller, 114: open / close lever,
115 ... rotating brush, 116 ... rotating shaft, 201 ... cleaner body, 202 ... hose, 203 ... hose hand part, 204
... Extension tube, 205 ... Suction body, 206 ... Switch operation part,
207: first infrared light emitting section, 208: second infrared light emitting section, 209: infrared light receiving section, 210: indoor ceiling, 15
01,1601 ... Blade, 1502, 1602, 1801
... Brush, 1503 ... Rotary core, 1506 ... Sliding contact part, 1507, 1603 ... Protrusion, 1701 ... Thread.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Yamaguchi 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Electric Appliances Division, Electric Appliances Division Taga Headquarters (72) Inventor Susumu Sato Higashi-taga, Hitachi-shi, Ibaraki 1-1-1 Machi Incorporated company Hitachi Ltd. Electric Appliances Division Taga Headquarters

Claims (10)

[Claims] 1. A suction body which is formed by disposing an upper case on a lower case having a suction port on the lower surface, a rotary cleaning body which is disposed on the suction port of the suction body, and which drives the rotary cleaning body. In order to do so, a suction member having a drive means, a casing having a suction passage arranged at the rear portion of the suction port main body, and a suction joint arranged at the rear portion of the casing, wherein the rotary cleaning member has a cleaning surface. A sliding member that slides and a rotating body that fixes the sliding member are provided, and the sliding member is arranged so as to be inclined in a counter-rotational direction of the rotary cleaning body with respect to a normal direction of the rotating body. An electric vacuum cleaner having an installed suction body. 2. The vacuum cleaner according to claim 1, wherein the sliding member has flexibility. 3. The electric vacuum cleaner according to claim 2, wherein the sliding member has a strip shape made of an elastic material. 4. The electric vacuum cleaner according to claim 2, wherein the sliding member is a brush material. 5. The electric vacuum cleaner according to claim 3, wherein the sliding member has a protrusion on a surface on a tip end side. 6. The electric vacuum cleaner according to claim 4, wherein the brush material is formed thicker from a root portion to a tip portion. 7. A suction body formed by disposing an upper case on a lower case having a suction port on a lower surface, a rotary cleaning body disposed on the suction port of the suction body, and a drive unit for driving the rotary cleaning body. In order to achieve this, there is provided a suction body having a drive means, a casing having a suction passage arranged at a rear portion of the suction body, and a suction joint arranged at a rear portion of the casing, wherein the rotary cleaning body has a cleaning surface. A sliding member that slides and a rotating body that fixes the sliding member are provided, and at least two pairs of the sliding members are provided, and the pair of sliding members are in the normal direction of the rotating body. The rotary cleaning body is inclined in the counter-rotational direction, the other sliding members are arranged in the normal direction, and the sliding member in the normal direction has a width in the radial direction lower than that of the inclined sliding member. A characteristic vacuum cleaner. 8. The sliding member tilted in the counter-rotational direction of the rotary cleaning body according to claim 7, has a strip shape made of an elastic material, and the sliding member in the normal direction of the rotary body is a brush material. An electric vacuum cleaner characterized by being present. 9. A suction body formed by disposing an upper case on a lower case having a suction port on the lower surface, a rotary cleaning body disposed on the suction port of the suction body, and the rotary cleaning body driven. In order to do so, a suction member having a drive means, a casing having a suction passage arranged at the rear portion of the suction port main body, and a suction joint arranged at the rear portion of the casing, wherein the rotary cleaning member has a cleaning surface. A blade having flexibility that slides and a rotating body that fixes the blade are provided, and the blade is arranged so as to be inclined in a counter-rotational direction of the rotary cleaning body with respect to a normal direction of the rotating body. The vacuum cleaner is characterized in that it is provided with a suction body having a brush disposed at the tip of the blade. 10. The electric vacuum cleaner according to claim 9, wherein the blade and the brush are sewn together with a thread and joined together, and protrusions are formed along the longitudinal direction of the blade before and after the joined portion.