TWI680735B - Electric sweeper - Google Patents

Abstract

Provide electric sweeper to reduce dead angle.

The electric sweeper of the present invention is provided with: a body; a left drive wheel on the left side of the body; a right drive wheel on the right side of the body opposite to the left drive wheel; a rotating brush with a rotation axis in the left and right directions; and a set The dust part is moved forward and backward by the rotation of the left and right drive wheels. The dust collector has a part of the volume in the area directly above a part or all of the rotating brush in the front and rear direction. The area that is away from the center of the body has the other part or the remaining part of the volume.

Description

Electric sweeper

The invention relates to an electric sweeper.

As a self-propelled sweeping machine that sweeps while autonomously moving, it is known to load a power source with a rechargeable battery and control the travel motor driving the driving wheel to perform self-propelled travel, while using a motor-driven rotating brush to dial in dust , And sweeping by attracting fans.

The self-propelled sweeping machine is suitable for sweeping into narrow passages or gaps on the underside of furniture, etc. Therefore, this system is preferably a small shape with a wide width or a small height. The self-propelled sweeping machine is a layout that arranges rechargeable batteries or brushes in the casing or inside, but when determining the shape, it is expected to be formed to achieve miniaturization and achieve a weight balance of the body; the brush cleaning area, rechargeable battery The volume, the dust storage volume, and the like are maintained at a relatively high level, and the entire body layout is preferred.

Patent Document 1 is formed such that a dust collecting part 30 is provided on a rotating shaft of a driving wheel, an electric fan 22 and a rotating brush 9 are arranged on one side of the dust collecting part 30, and a main body layout of a battery 14 is arranged on the other side. Relative to the rotating brush 9, the electric blower 22 is located on one side, and the dust collector 30 is on the other side (Figure 2, 0051).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Publication No. 2013-070951

In Patent Document 1, the volume of the air intake path 12 (flow path) connecting the electric blower 22 and the dust collecting portion 30 tends to increase, and as a result, it forms a dead space, making it difficult to ensure the volume of the dust collecting portion 30. In addition, in order to increase the volume of the dust collecting part 30, it is necessary to expand the interval between the drive wheels or increase the height of the body, resulting in a larger body.

The first invention completed in view of the above circumstances is an electric sweeper equipped with: a body; a left drive wheel on the left side of the body; a right drive on the right side of the body opposite the left drive wheel Wheel; a rotating brush with a rotating shaft in the horizontal direction; and a dust collecting part, which is moved forward and backward by the rotation of the left driving wheel and the right driving wheel, the electric sweeper is characterized in that the dust collecting part is The area directly above a part or all of the rotating brush has a part of the volume, and has another part or the remaining part of the volume on the side farther from the center of the body than the area.

In addition, the second invention completed in view of the above circumstances is an electric sweeper equipped with: a body; a left drive wheel on the left side of the body; a right side of the body opposite the left drive wheel Right driving wheel; rotating brush with a rotating shaft in the horizontal direction; and dust collecting part, which is moved forward and backward by the rotation of the left driving wheel and the right driving wheel. The characteristics of the electric sweeper are: the dust collecting part The area directly above a part or all of the rotating brush has a part of the volume, and has a part or the remaining part of the volume on the side farther from the area between the left drive wheel and the right drive wheel .

With the present invention, it is possible to provide an electric sweeper that reduces the flow path as a dead angle.

1s‧‧‧Lower shell

1u‧‧‧Upper case

2, 3‧‧‧ drive wheels (wheels)

2B‧‧‧ Bush

4‧‧‧ auxiliary wheel

5‧‧‧Rotary brush

5m‧‧‧rotating brush motor (motor)

6‧‧‧Guide brush

7‧‧‧Side brush

9‧‧‧rechargeable battery

10‧‧‧Control board

11‧‧‧Suction fan motor

12‧‧‧ Dust Collection Department

12i‧‧‧Suction flow path

13‧‧‧ Dust filter

14i‧‧‧Suction

20、30‧‧‧Suspension unit

21‧‧‧Moving motor

22‧‧‧Reduction mechanism

24‧‧‧ 1st arm

24i‧‧‧One end

24t‧‧‧The other end

25a‧‧‧The first wheel support shaft

25b‧‧‧ 2nd wheel support shaft

25c‧‧‧The third wheel support shaft

26a‧‧‧Guide shaft

26b‧‧‧Upper compression spring housing

26c‧‧‧Low compression spring shell

27‧‧‧Compression spring

S‧‧‧ Self-propelled sweeping machine

Y‧‧‧ Floor

Figure 1 is a perspective view of a self-propelled sweeping machine.

Figure 2 is a bottom view of a self-propelled sweeping machine.

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 4 is a perspective view of the self-propelled sweeping machine in a state where the installation of the dust collector is released.

FIG. 5 is a view showing the internal structure of the self-propelled sweeping machine in perspective.

6 is a perspective view of the suspension unit.

The embodiments of the present invention will be described in detail below with reference to the attached drawings. The same components are marked with the same symbols, and the same explanations are not repeated.

[Autonomous walking sweeper S]

FIG. 1 is a perspective view of an autonomous walking type sweeper S as an example of an electric sweeper, and FIG. 2 is a bottom view of the autonomous walking type sweeper. Among the traveling directions of the self-propelled sweeping machine S, the side where the side brush 7 is provided is set to the front, the vertical upward is set to the upper side, the direction in which the drive wheels 2 and 3 face each other, and the side of the drive wheel 2 is set to the left The drive wheel 3 side is set to the right. That is, as shown in FIG. 1 and the like, the front-rear, up-down, and left-right directions are defined.

The self-propelled sweeping machine S system includes an upper housing 1u forming an upper housing including an upper surface, and a lower housing 1s forming a lower housing including a bottom surface. A dust collecting part 12 capable of storing dust is provided on the upper side. The upper casing 1u and the lower casing 1s, and the components arranged in these casings are collectively referred to as a body.

The bottom surface of the self-propelled sweeping machine S includes: a pair of drive wheels 2, 3 and auxiliary wheels 4 that can be grounded on the floor surface Y, a rotating brush 5 and side brushes 7 for collecting dust on the floor surface Y, and guide dust的导导刷6. The self-propelled sweeping machine S series can be equipped with various well-known sensors, and the sensor output can be used to obtain information about the surroundings. The driving wheels 2 and 3 are opposed to each other in the left-right direction, and the walking motor 21 (see Figure 6) Rotation drive. The auxiliary wheel 4 is a follower wheel located in front of the drive wheels 2 and 3 and on the center side in the left-right direction, and a caster that can rotate freely can be used. The drive wheels 2 and 3 of the present embodiment are opposed to each other with the center of the body of the self-propelled sweeping machine S in between, but they may be opposed without being sandwiched by the center. If the driving force of the walking motor 21 is transmitted to the driving wheels 2 and 3, the autonomous walking type sweeper S system can be driven in the front direction or the rear direction.

The rotating brush 5 has a rotating shaft in the horizontal direction, and is rotated by a rotating brush motor 5m (see FIG. 6 ). The side brush 7 has a rotating shaft in the up-down direction, and is rotated by a rotating brush motor 5m. The guide brush 6 is a fixed brush that guides the dust that has bounced off the side brush 7 and is directed toward the rotating brush 5 where it overlaps part or all of the drive wheels 2 and 3 in the front-rear direction. The guide brush 6 is located in the left-right direction between the vicinity of the end of the rotary brush 5 and the rotation axis of the side brush 7. In addition, the guide brush 6 extends in the front-back direction. However, the rotating brush 5 of this embodiment has a rotating shaft in the left-right direction.

In addition, the self-propelled sweeping machine S has a suction fan 11 that generates an airflow that attracts dust between the drive wheels 2 and 3 in the left-right direction, and a suspension unit that urges the drive wheels 2 and 3 upward or downward ( suspension unit) 20, 30. In addition, the self-propelled sweeper S system includes a rechargeable battery 9, a control board 10, a dust collection filter 13, and the like. The structure of the layout in the autonomous walking type sweeper S will be further described as follows.

Among them, side brushes 7, auxiliary wheels 4, drive wheels 2, 3, and rotating brushes 5 are provided in this order from the front on the lower housing 1 s side. With drive wheel 2, 3 are roughly overlapped with: a guide brush 6, suspension units 20, 30, and a suction fan motor 11.

In addition, on the lower housing 1s side, the drive wheels 2 and 3, the suspension units 20 and 30, and the suction fan motor 11 are provided in this order from the outer side in the left-right direction.

〔Dust Collecting Department 12〕 (Position and structure of dust collector 12)

Fig. 3 is a sectional view taken along line A-A of Fig. 1. The dust collecting unit 12 has a container capable of storing dust and has two openings. A part of the volume of the dust collecting part 12 is located in a region directly above a part or all of the rotating brush 5, and the other part or the remaining part of the volume is located farther from the center of the body of the autonomous sweeping machine S than the rotating brush 5. Area on the side. In the present embodiment, the remaining portion of the volume is located in a region farther from the center of the body of the autonomous sweeping machine S than the rotary brush 5. In addition, the center system of the self-propelled sweeping machine S is located roughly between the drive wheels 2 and 3.

The driving wheels 2 and 3 are located at or near the center of the autonomous walking type sweeping machine S, so it is easy to obtain the center of gravity balance of the autonomous walking type sweeping machine S. Among them, the rotary brush 5 and the suction port 14i are located in an area away from the area between the drive wheels 2 and 3. Therefore, it is easy to increase the left and right sizes of the rotating brush 5. In addition, since the rotating brush 5 and the suction port 14i are provided in an area that is not in the area between the drive wheels 2, 3, the entire or relatively large proportion of the volume of the dust collector 12 can be provided in the drive wheels 2, 3 The area between the areas. As a result, the volume of the dust collector 12 can be easily increased.

The two openings of the dust collecting part 12 are respectively provided on the dust collecting filter 13 side and the suction port 14i side.

The dust collection filter 13 is located between the opening of the suction fan motor 11 and the dust collection filter 13 side described later. With respect to the front-rear direction, the suction port 14i is located on the side farther from the center of the body of the self-propelled sweeping machine S (rear in this embodiment) than the rotation axis of the rotary brush 5 and serves as an entrance for a flow path through which dust can flow. Instead. The suction port 14i is connected to the suction port channel 12i connected to the opening on the suction port 14i side of the dust collector 12. In addition, in the front-back direction, a part or all of the rotating brush 5 is tied between the opening on the suction port 14i side and the opening on the dust collection filter 13 side.

The opening on the suction port 14i side is arranged at a position farther from the center of the body of the autonomous walking type sweeper S than the opening on the dust collection filter 13 side. Among them, the opening on the dust collection filter 13 side can be opened and closed by the dust collection filter 13.

By forming the shape of the dust collecting part 12 and the positional relationship with the rotating brush 5 or the suction fan motor 11 and the like as described above, it is easy to shorten the suction port flow path 12i to reduce the dead angle, or to arrange the dust collecting part 12 to run autonomously The outer side of the type sweeper S.

Specifically, compared with the opening on the suction port 14i side, there is an opening on the dust collection filter 13 side closer to the center of the body of the self-propelled sweeping machine S, so the dust collecting section 12 can also be achieved as a self-propelled sweeping The function of the flow path in the center of the machine S body. This makes it possible to increase the volume of the dust collector 12 while reducing the volume of the flow path. At this time, there is a part of the volume of the dust collecting portion 12 directly above the rotating brush 5, so it can be effectively used and easily formed Dead zone. In addition, as described above, if the dust collecting portion 12 is arranged on the outer peripheral side of the autonomous walking type sweeper S, it is possible to easily achieve a larger volume of the dust collecting portion 12 by increasing the size of the outer peripheral side of the autonomous walking type sweeper S. In addition, the opening on the suction port 14i side is formed on the side away from the center of the main body of the self-propelled sweeping machine S, so the dust collector 12 can be easily attached and detached.

(Installation and removal of dust collecting part 12)

FIG. 4 is a perspective view of the self-propelled sweeper S in a state where the installation of the dust collector 12 is released. The dust collecting part 12 can be attached and detached in the upward direction or the rear direction together with the dust collecting filter 13, for example, by removing the dust collecting filter 13, the user can discard the dust. The dust collecting part 12 may also use a part of the upper housing 1u as a cover and be arranged on the lower side of the cover. However, as shown in the present embodiment, if the height of the upper housing 1u and the upper surface of the dust collecting part 12 are formed to substantially match Since the dust collecting portion 12 can be enlarged while maintaining the aesthetic feeling, it is easy to ensure the dust collecting volume.

〔Dust Filter 13〕

As exemplified in FIG. 3, the dust filter 13 is positioned between the suction fan 11 and the rotating brush 5 in the front-rear direction, and is arranged substantially perpendicular to the horizontal direction (in this embodiment, it is arranged substantially perpendicular to the front-rear direction) ). The dust filter 13 is preferably located on the center side of the body of the self-propelled sweeping machine S compared to the rotating shaft of the rotating brush 5, and is preferably located on the self-propelled sweeping machine S compared to the end of the rotating brush 5 The center side of the body is good. In this system, since the rotating brush 5 has a substantially cylindrical shape, the upper and lower dimensions are the largest at the position of the rotating shaft. Therefore, compared with the rotating shaft, the dust collecting filter 13 is disposed on the center side of the main body of the self-propelled sweeping machine S. This makes it easier to configure a larger dust collection filter 13.

The dust collecting filter 13 is more perpendicular to the horizontal direction than the direction of gravity, so the opening of the dust collecting filter 13 side of the dust collecting section 12 can be brought close to the suction fan motor 11. Therefore, it is easy to expand the volume of the dust collecting portion 12 toward the suction fan motor 11 side, so the volume of the dust collecting portion 12 can be increased.

For comparison, consider, for example, arranging the dust collection filter 13 to be substantially perpendicular to the direction of gravity. The area further downstream than the dust collecting filter 13 is outside the dust collecting portion 12, that is, where it becomes a flow path. In this case, a flow path extending in the direction of gravity must be formed in the self-propelled sweeping machine S And the flow path that bends from there and extends horizontally. As a result, the volume of the flow path becomes larger, and the volume of the dust collector 12 tends to become smaller.

〔Suction fan motor 11〕

FIG. 5 is a view showing the internal structure of the self-propelled sweeping machine S through the upper casing 1u. Part or all of the suction fan motor 11 is located in the area between the drive wheels 2 and 3. That is, with respect to the front-rear direction, the drive wheels 2 and 3 are located on the center side of the body of the self-propelled sweeping machine S. In the present embodiment, in the front-rear direction, 80% or more of the size of the suction fan motor 11 overlaps the drive wheels 2 and 3.

Suction fan motor 11 allows the suction port 14i to flow to the dust collector The air flow on the filter 13 side occurs. The airflow system distributes dust and the like drawn on the rotating brush 5 according to the suction port 14i, the suction port flow path 12i, the opening on the suction port 14i side of the dust collecting part 12, the dust collecting part 12 and the dust collecting filter 13 side of the dust collecting part 12 The opening, the dust collection filter 13, the suction fan motor 11, the exhaust port 1s5 (refer to FIG. 2), and the outside of the main body of the self-propelled sweeping machine S flow in order.

The shape of the suction fan motor 11 may be formed into a substantially cylindrical shape, and the axis direction thereof may be formed to be substantially parallel to the horizontal direction (in this embodiment, the front-rear direction). For attracting the fan motor 11, for example, a propeller fan or a sirocco fan can be used.

If the housing 1 is to be a relatively small self-propelled sweeping machine S, consider setting the distance between the drive wheels 2 and 3 to be short, so if forming a rotating brush in the area between the drive wheels 2 and 3 5 or the layout of the dust collecting portion 12 may make it difficult to secure the left and right lengths of the rotating brush 5 or the volume of the dust collecting portion 12. On the other hand, since the suction fan motor 11 uses, for example, a propeller, it is often necessary to have a height dimension that is about the same size as the horizontal direction. Therefore, from the viewpoint of suppressing the height of the housing 1, it is easy to select the size to the extent of the area disposed between the drive wheels 2 and 3. That is, by arranging the suction fan motor 11 in the area between the drive wheels 2 and 3, it is easy to arrange the large-scale rotating brush 5 or the dust collector 12. Among them, the rechargeable battery 9 is also preferably large. In this embodiment, the rechargeable battery 9 is also provided in an area other than the area between the drive wheels 2 and 3. However, the dust collector 12 and the rechargeable battery 9 are not necessarily required to be located in areas other than the area between the drive wheels 2 and 3 in their entire volumes. For example, more than 50% or more than 80% of the volume or volume may exist between the drive wheels 2, 3 Area outside the area.

[Suspension unit 20, 30]

It is not easy to arrange other members below the substantially cylindrical suction fan motor 11, and it is easy to form a dead angle. However, the suspension units 20 and 30 of the present embodiment extend in the left-right direction with respect to the drive wheels 2 and 3, and a part of the structure is easily arranged in the space below the suction fan motor 11. Thereby, the suspension units 20 and 30 can be arranged together with the suction fan motor 11 in the space between the drive wheels 2 and 3. Specifically, substantially all of the suspension units 20 and 30 can be accommodated in the drive wheels 2 and 3 in the front-rear direction.

The configuration of the suspension unit 30 can be formed to be symmetrical with the suspension unit 20, so the suspension unit 20 will be described here. FIG. 6 is a perspective view of the suspension unit 20. The suspension unit 20 of this embodiment urges the driving wheel 2 downward and rotates it around the rotation shafts 25a, 25b, 25c, thereby rotating around the self-propelled sweeping machine S (around the housing 1u, 1s) Moving institutions.

In order to rotatably support the drive wheels 2, a first wheel support shaft 25a extending in the front-rear direction is provided. The first wheel support shaft 25a is provided in the space below the suction fan motor 11 that easily becomes a dead angle. More specifically, although not shown in FIG. 6, the suction fan motor 11 is arranged above the first wheel support shaft 25 a and to the right of the speed reduction mechanism 22.

With respect to the driving wheel 2, an axle bush 2B is provided on the inner side in the left-right direction. Between the driving wheel 2 and the first wheel support shaft 25a, along the front and rear In the direction, the third wheel support shaft 25c is arranged.

The first arm 24 is rotatably supported by the first wheel support shaft 25a and the third wheel support shaft 25c.

In this way, the one end 24i of the first arm 24 is supported by the first wheel support shaft 25a to rotate freely with respect to the lower housing 1s (arrow β 1), and the other end 24t of the first arm 24 The third wheel support shaft 25c is connected to the bush 2B supporting the drive wheel 2 so as to be freely rotatable (arrow β 2).

Furthermore, a second wheel support shaft 25b extending in the front-rear direction is provided near the upper end of the drive wheel 2 and on the same side as the drive wheel 2 and the bush 2B, so as to rotatably support the drive wheel 2.

The second wheel support shaft 25b is a bottomed cylindrical upper compression spring case 26b that rotatably supports the fixed guide shaft 26a.

A bottomed cylindrical lower compression spring case 26c through which the guide shaft 26a is inserted is fixed to the bush 2B. Among them, the lower compression spring housing 26c constitutes a second arm for the drive wheel 2.

Inside the upper compression spring case 26b and the lower compression spring case 26c, a compression spring 27 that urges the driving wheel 2 downward is provided. Thereby, if the driving wheel 2 is not stressed from the outside, it protrudes from the lower housing 1s. On the other hand, if the driving wheel 2 receives a force from the third wheel support shaft 25c toward the second wheel support shaft 25b, for example, an upward force due to the floor surface Y, etc., the driving wheel 2 is pressed Into the lower housing 1s. Inside the compression spring 27, for example, the center, the guide shaft 26a is inserted.

As a result, the driving wheel 2 uses the first arm 24, and through the lower first wheel support shaft 25a, is supported rotatably with respect to the body of the autonomous walking type sweeper S (arrow β 1), and passes through the third The wheel support shaft 25c is supported rotatably with respect to the first arm 24 (arrow β 2). The driving wheel 2 can be rotated downward by the elastic force of the compression spring 27, the weight of the driving wheel 2 or the bush 2B, and by the upward force due to the floor surface Y, for example move.

In addition, the driving wheel 2 is relatively free to the autonomous walking type sweeper S, and rotates freely relative to the autonomous walking type sweeper S through the second wheel support shaft 25b provided above the other end 24t (arrow β 3 ) Is supported, and is supported by a compression spring 27 provided substantially horizontal to the up-down direction so as to move up and down (arrow β 4).

[Positional relationship between drive wheels 2, 3 and rotating brush 5]

As shown in the example of FIG. 2, in the front-back direction, among the ends of the rotating brush 5, the end close to the center of the body of the self-propelled sweeping machine S, and the end of the driving wheels 2, 3 are close to the rotating brush The end on the side of 5 is located on the side far from the center of the S body of the self-propelled sweeping machine. For example, in the present embodiment, the front end of the rotating brush 5 is located behind the rear ends of the drive wheels 2 and 3. Thereby, when viewed from the left and right directions, the rotating brush 5 does not overlap with the driving wheels 2 and 3, so even if the left and right sizes of the rotating brush 5 are increased, it is easy to maintain the self-propelled sweeper in a small condition S.

[Rechargeable battery 9, control board 10]

As exemplified in FIGS. 3 and 5, the rechargeable battery 9 and the control board 10 are relatively attracted to the fan motor 11 and are located on the opposite side to the dust collecting part 12. Among the components housed in the self-propelled sweeping machine S, the relatively mass suction fan motor 11 is located near the center of the self-propelled sweeping machine S, and the rotary brush motor 5m is located on the same side as the rotary brush 5, charging The battery 9 is located on the opposite side to the rotating brush motor 5m. Therefore, it is easy to ensure the balance of the self-propelled sweeping machine S.

In addition, since the control board 10 is arranged on the same side as the rechargeable battery 9, wiring is easy. At this time, by arranging the rechargeable battery 9 directly above or below the control board 10, wiring can be more easily performed.

In addition, as shown in the example of FIG. 5, the control board 10 is formed into a shape in which the fan motor 11 is attracted near the recess. This makes it easy to install a large suction fan motor 11.

1s‧‧‧Lower shell

5‧‧‧Rotary brush

7‧‧‧Side brush

9‧‧‧rechargeable battery

10‧‧‧Control board

11‧‧‧Suction fan motor

12‧‧‧ Dust Collection Department

12i‧‧‧Suction flow path

13‧‧‧ Dust filter

14i‧‧‧Suction

14‧‧‧ battery

Y‧‧‧ Floor

Claims (11)

An electric sweeper is provided with: a body; a left driving wheel on the left side of the body; a right driving wheel on the right side of the body opposite to the left driving wheel; a rotating brush with a rotating shaft in the horizontal direction ; And the dust collecting part, which is moved forward and backward by the rotation of the left driving wheel and the right driving wheel, the electric sweeper is characterized in that the dust collecting part is directly above a part or all of the rotating brush The area has a part of the volume, and the other part or the remaining part of the volume on the side farther from the center of the main body than the area, and has: in the front-rear direction, it is located farther from the main body than the rotation axis of the rotary brush A suction port on the center side; and a suction port flow path having the suction port at one end, the dust collecting portion is provided with: a suction port side opening connected to the other end side of the suction port flow path; and the suction port or the suction port side The opening is provided on the dust collection filter side near the dust collection filter disposed closer to the center of the body than the opening. An electric sweeper, which is equipped with: The main body; the left drive wheel on the left side of the body; the right drive wheel on the right side of the body opposite to the left drive wheel; a rotating brush with a rotation axis in the horizontal direction; and a dust collecting part The rotation of the driving wheel and the right driving wheel moves in the front-rear direction. The electric sweeper is characterized in that the dust collecting part has a part of the volume in a region directly above a part or all of the rotating brush. Compared to the other part or the remaining part which has a volume away from the center of the body, for the left-right direction, there is a suction fan between the left driving wheel and the right driving wheel, and for the left-right direction, the left driving wheel and the aforementioned A left suspension unit and/or a right suspension unit each of the right drive wheels springing up and down are provided between the left drive wheel and the right drive wheel, and the suction fan has a center in a direction substantially parallel to the front-rear direction In the substantially cylindrical shape of the shaft, the left suspension unit and/or the right suspension unit have a first wheel support shaft extending in the front-rear direction near the lower end of the suction fan. According to the electric sweeper of claim 1 or claim 2, the other part or the remaining part of the volume is located on the same side as the rotating brush system with respect to the center of the body. An electric sweeper as claimed in item 1 of the patent scope, wherein in the left-right direction, there is a suction fan between the left drive wheel and the right drive wheel, and in the front-rear direction, the dust filter is located between the suction fan and the The rotating brushes are located closer to the center of the body than the rotating shaft of the rotating brush, and the dust collecting filter is provided substantially perpendicular to the horizontal direction. An electric sweeper as claimed in item 1 or item 2 of the patent scope, wherein in the left-right direction, there is a suction fan between the left drive wheel and the right drive wheel, and the suction fan is provided with the rotation on one side The brush and the dust collecting part are provided with a rechargeable battery and a control board on the other side. An electric sweeper as claimed in item 5 of the patent application, wherein the control board is recessed near the suction fan. An electric sweeper as claimed in item 5 of the patent application, wherein the rechargeable battery is provided in the area directly above or directly below the control board. An electric sweeper as claimed in item 1 or item 2 of the patent scope, wherein, in the front-rear direction, the side of the end of the rotary brush close to the center of the body and the end of the left drive wheel or the right drive wheel Among them, the side closer to the rotating brush is located away from the center of the body. An electric sweeper is provided with: a body; a left drive wheel on the left side of the body; a right drive on the right side of the body opposite the left drive wheel A moving wheel; a rotating brush with a rotating shaft in the horizontal direction; and a dust collecting part, which is moved in the front-rear direction by the rotation of the left driving wheel and the right driving wheel. The characteristics of the electric sweeper are: The area directly above a part or all of the rotating brush has a part of the volume, and the other part or the remaining part of the volume is on the side farther from the area between the left drive wheel and the right drive wheel than the area. : For the front-rear direction, the suction port provided on the side farther from the center of the main body than the rotation axis of the rotary brush; and the suction port flow path having the suction port at one end, the dust collecting part is provided with: The suction port side opening connected to the other end side of the path; and the dust collection filter side opening provided near the dust collection filter disposed on the side closer to the center of the body than the suction port or the suction port side opening . An electric sweeper is provided with: a body; a left driving wheel on the left side of the body; a right driving wheel on the right side of the body opposite to the left driving wheel; A rotating brush having a rotating shaft in the horizontal direction; and a dust collecting part, which is moved in the front-rear direction by the rotation of the left driving wheel and the right driving wheel, the electric sweeper is characterized in that the dust collecting part is in the rotation The area directly above a part or all of the brush has a part of the volume, and there is another part or the remaining part of the volume on the side farther from the area between the left drive wheel and the right drive wheel than the area. There is a suction fan between the left drive wheel and the right drive wheel, and for the left and right directions, the left suspension unit and/or the right suspension unit that urges the left drive wheel and the right drive wheel each up and down are provided Between the left driving wheel and the right driving wheel, the suction fan system has a substantially cylindrical shape having a central axis in a direction substantially parallel to the front-rear direction, and the left suspension unit and/or the right suspension unit are The suction fan has a first wheel support shaft extending in the front-back direction near the lower end. According to the electric sweeper of claim 9 or 10, the other part or the remaining part of the volume and the area between the left driving wheel and the right driving wheel opposite to the rotating brush are on the same side .

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