TWI667985B - Self-propelled electric sweeper - Google Patents

Abstract

A self-propelled electric sweeper with a high cleaning performance is provided.

The self-propelled electric sweeper (C) of the present invention includes a battery (B) having a power source, and an electric blower (81) driven by the battery (B) and sucking the dust from the suction port (17). To the dust box (K); and a pair of left and right side brush (40), which are disposed at the lower portion of the front portion of the body (50), are driven by the battery (B), and are rotated in a slightly horizontal direction. Concentrating the dust; and rotating the brush (5), driven by the battery (B), and rotating in a slightly vertical direction, and guiding the dust to the suction port (17); and the frame, the battery is housed (B) And an electric blower (81); and a pair of drive wheels (61), which are disposed under the frame and driven by the battery (B), before the pair of drive wheels (61) A battery (B) and a side brush (40) are disposed, and at the rear of the pair of driving wheels (61), a rotating brush (5) and a suction port (17) are disposed, and a pair of driving wheels are disposed. Between (61), an electric blower (81) is disposed.

Description

Self-propelled electric sweeper

The present invention relates to a self-propelled electric sweeper.

From the prior art, a self-propelled electric sweeper capable of autonomously moving and cleaning in a room in an electric sweeper is known. The self-propelled electric sweeper is equipped with a rechargeable battery as a power source, and uses a motor-driven rotating brush to scrape dust into the dust box while mainly advancing. Since the self-propelled electric sweeper has a rechargeable battery mounted as a power source, there is a limit in the usable capacity. Therefore, the attractive force that the electric blower can generate is weak compared to the electric sweeper with the power cord attached. Moreover, when the rechargeable battery is small, the moving distance of the self-propelled electric sweeper is shortened, and the area where the cleaning can be performed is reduced. Therefore, the rechargeable battery system needs to have a certain degree of size.

At the center of the lower portion of the self-propelled electric sweeper, a pair of drive wheels for moving the self-propelled electric sweeper are provided. The self-propelled electric sweeper advances, retreats, rotates, and the like by driving the wheel.

On the left and right sides of the lower part of the self-propelled electric sweeper, a pair of side brushes are provided.

The side brush is rotatably supported at the center of the shaft and is rotated toward the inside, and the dust outside the self-propelled electric sweeper is scraped toward the suction port.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-176507

In addition, when scraping and cleaning the corner portion of the wall by the side brush, if the side brush is small in diameter, the side brush cannot reach the corner portion, and the corner portion cannot be cleaned. . Here, if a side brush having a large diameter is used, although the side brush can reach the corner portion, the front end of the side brush is pressed by the driving wheel, and the side brush is hooked or A situation occurs when the drive wheel stops.

Therefore, in Patent Document 1, the shaft 240j of the side brush 240 of the self-propelled electric sweeper C20 is configured to be movable toward the inside and the outside. Fig. 21 is a top view of the self-propelled electric sweeper of Patent Document 1.

Thereby, when the side brush 240 abuts against the wall, the side brush 240 is retracted toward the inside of the self-propelled electric sweeper C20. When there is no wall in the vicinity of the side brush 240, the shaft 240j of the side brush 240 is moved outward, and the dust on the outer side of the self-propelled electric cleaning machine C20 can be cleaned. Further, the component symbol 161 is a pair of driving wheels, and the component symbol 162 is a rotating brush that conveys the dust scraped to the center side by the side brush 240 to the suction port 163.

However, in the self-propelled electric sweeper C20, it is necessary to have the moving spaces p10 and p10 having the shaft 240j, and it becomes a dead space in which other members cannot be disposed, and the self-propelled electric sweeper C20 is caused. Large size. Further, since the moving spaces p10 and p10 form recesses, there is a possibility of dust accumulation.

On the other hand, a dining chair or desk chair with 4 feet is a 26cm-wide self-propelled electric sweeper with a diameter of more than 26cm. Sweep between the feet of the chair or desk chair.

Similarly, the height of the sofa table or the table with the storage space from the ground is about 10 cm.

Therefore, in order to allow the self-propelled electric sweeper to enter the table below the sofa table or the table with the storage space and clean the floor below the table or the table with the storage space, the height is preferably 10 cm or less.

In the area where cleaning is difficult or impossible to clean due to the size of the self-propelled electric sweeper, the user needs to lift and clean the dining chair, desk chair, sofa table, etc., or simply Do not clean.

Therefore, it is desirable to provide a dining chair that can be attached to 4 feet. Or a small-sized self-propelled electric sweeper that cleans the floor below the desk chair, the sofa table, or the floor below the desk with the storage space.

Here, if the self-propelled electric cleaning machine C20 is to be downsized, the rotating brush 162 is disposed between the pair of driving wheels 161, so that the rotating brush 162 and the suction port 163 are changed. Small, cleaning performance is reduced.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a self-propelled self-propelled electric sweeper having a high cleaning performance.

In order to solve the above problems, the self-propelled electric sweeper according to the first aspect of the present invention includes a battery including a power source, and an electric blower driven by the battery and sucking dust from the suction port to the set. Inside the dust box; and a pair of left and right side brushes are disposed at the lower portion of the front portion of the body, and are driven by the battery, and are rotated in a slightly horizontal direction to concentrate the dust; and the rotating brush is used by the battery Driven and rotated in a slightly horizontal direction as a rotating shaft, and guiding the dust to the suction port; and a frame for accommodating the battery and the electric blower; and a pair of driving wheels are provided in the foregoing a lower portion of the casing and driven by the battery; and a drive mechanism accommodating portion provided between the pair of driving wheels, and the battery and the side are disposed before the pair of driving wheels The brush is disposed at a position further rearward than the rear end of the pair of driving wheels, and is configured to have the rotating brush and the suction port in the pair Between the drive wheels, the aforementioned electric blower is disposed.

According to the invention of the first aspect, it is possible to provide a small self-propelled electric sweeper which is easy to ensure the wide size of the rotating brush.

5‧‧‧Rotating brush

5c‧‧‧planting

5f‧‧‧Non-woven fabric (adhesion prevention material)

17‧‧‧ attracting mouth

21‧‧‧Rotary brush motor (2nd motor)

40‧‧‧ side brush

40j1‧‧‧ Axis (the center of rotation of the side brush)

40U‧‧‧ side brush unit

41‧‧‧ side brush holder

42m‧‧‧ side brush motor (1st motor)

44‧‧‧crossing the convex

50‧‧‧ body

51‧‧‧ Lower case (frame)

57‧‧‧Travel motor (3rd motor)

61‧‧‧ drive wheel

61c‧‧‧ Inner wheel (1st outer circumference)

61b‧‧‧Central wheel (2nd outer circumference)

61a‧‧‧Outer wheel (3rd outer circumference)

61j‧‧‧Axis (the center of rotation of the drive wheel)

63‧‧‧Main power switch

81‧‧‧Electric blower

83‧‧‧Assistance wheel

91‧‧‧Upper casing (frame)

B‧‧‧Rechargeable battery (battery)

C‧‧‧Self-propelled electric sweeper

Ch‧‧‧ Height dimensions

Ck‧‧‧ outermost diameter size

C3‧‧‧ bulging

F‧‧‧dust filter

L2‧‧‧ The distance between the center of rotation of the side brush and the central axis (axis) of the drive wheel (the distance between the center of rotation of the side brush and the center of rotation of the drive wheel)

L3‧‧‧Distance between the center of rotation of the side brush and the contour of the body

K‧‧‧ dust box

K1‧‧‧ Inlet

R1‧‧‧ radius (radius of the rear)

[ Fig. 1] (a) is a perspective view of the self-propelled electric sweeper of the present embodiment viewed from the front left upper side, and (b) is a left self-propelled electric sweeper from the left rear upper side. A perspective view of the observation.

Fig. 2 is a perspective view of the self-propelled electric sweeper as viewed from the front left and the bottom.

Fig. 3 is a left side view of the self-propelled electric sweeper.

Fig. 4 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 5 is a bottom view of the self-propelled electric sweeper.

Fig. 6 is a perspective view as seen from the upper left front side with the upper casing removed.

[Fig. 7] is a perspective view of a rotating brush.

8] (a) is a perspective view from the obliquely left front side with respect to the right side drive wheel, and (b) is a B arrow direction view of (a).

9(a) is a view taken along the line C of FIG. 8(a), and (b) is a view taken along the line D of FIG. 8(a).

[Fig. 10] (a) is a top view of the self-propelled electric sweeper in a state where the upper casing and the control device of the circuit board are removed, and (b) is an arrow view of the arrow (a). .

[Fig. 11] (a) is a perspective view of the battery case in which the rechargeable battery is incorporated, viewed from the front right upper side, (b) is a view of the arrow direction of (a), and (c) is ( b) View of the arrow direction of G.

Fig. 12 (a) is a perspective view showing the upper case removed from the battery case and viewed inside, and (b) is a perspective view showing the arrangement of the rechargeable battery inside the battery case.

FIG. 13 is a perspective view from the upper rear side in a state in which the handle of the dust box of the self-propelled electric sweeper is raised.

FIG. 14 is a perspective view from the front upper side in a state in which the handle of the dust box of the self-propelled electric sweeper is raised.

FIG. 15 is a perspective view from the front upper side in a state in which the handle of the dust box of the self-propelled electric sweeper is removed and removed.

Fig. 16 is a perspective view of the dust box of the self-propelled electric sweeper taken from the rear upper side in a state where the handle of the dust box of the self-propelled electric sweeper is removed.

Fig. 17 is a perspective view of a table and chair set having a chair and a table having four feet.

[Fig. 18] is a graph showing the foot spacing on the front side of the chair having four feet and the foot spacing on the side.

Fig. 19 is a perspective view showing a table in which a storage space is attached to a furniture with feet attached.

[Fig. 20] is a graph showing the height of the furniture with feet attached.

21 is a top view of the self-propelled electric sweeper of Patent Document 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The present embodiment is not limited to the following contents, and can be appropriately modified and implemented within the scope of the gist of the invention.

Fig. 1(a) is a perspective view of the self-propelled electric sweeper C of the present embodiment as viewed from the front left front, and Fig. 1(b) is for the self-propelled electric sweeper C from the left. A three-dimensional view of the observation is made from the upper rear. Fig. 2 is a perspective view of the self-propelled electric sweeper C as viewed from the front left and the bottom. Fig. 3 is a left side view of the self-propelled electric sweeper C. Figure 4 is a cross-sectional view taken along line A-A of Figure 1. Fig. 5 is a bottom view of the self-propelled electric sweeper C. Fig. 6 is a perspective view as seen from the upper left front side with the upper casing 91 removed.

The self-propelled electric sweeper C according to the embodiment of the present invention is a sweeper that cleans autonomously while moving in a specific cleaning area (for example, indoors). In addition, the side in which the side brush 40 is disposed in the direction in which the self-propelled electric sweeper C (refer to FIGS. 1(a) and (b)) advances is taken as the front side, and the vertical upper side is taken as the upper side, and will be driven. The direction in which the wheel 61 (refer to FIG. 2) opposes is left and right. That is, it is generally defined as shown in Figure 1 (a) and the like. Rear, up and down, left and right direction. The self-propelled electric sweeper C is mainly advanced toward the front.

In the self-propelled electric sweeper C of the embodiment, the layout, the outer shape, and the like of the components are configured for the purpose of being able to enter a narrow place and perform miniaturization for cleaning.

Here, in order to achieve miniaturization, the following conditions exist.

First, the drive wheels 61 (refer to FIG. 2) are disposed at the center portion in the front-rear direction of the main body 50 in order to advance, retreat, rotate, and the like of the self-propelled electric sweeper C (refer to FIG. 5).

The suction port 17 (refer to FIG. 4) which sucks the collected dust by the left and right side brush 40s has a great influence on the cleaning performance, and therefore increases particularly in the left-right direction.

Regarding the extent to which the self-propelled electric sweeper C can move and how long it is to be cleaned, since it has a great influence on the cleaning performance, it is desirable to size the rechargeable battery B (mainly length). Increase.

First, the pair of left and right side brush 40 scrapes the dust around the front side of the self-propelled electric sweeper C to the ground Y below the main body 50. Therefore, in order to concentrate the dust accumulated at the corners of the wall below the body 50, it is desirable to increase the diameter of the side brush 40. However, if the diameter of the brush is large, the side brush 40 is pressed by the drive wheel 61, and the side brush 40 is hooked or the drive wheel 61 is stopped.

Therefore, if the rotation axis 40j of the side brush 40 is used (refer to In the case of being disposed on the outer side, the outer shape of the main body 50 is increased, and the miniaturization of the self-propelled electric sweeper C becomes difficult.

For the above reasons, as shown in Figs. 2 and 5, a pair of driving wheels 61 are disposed at the center in the front-rear direction of the body 50.

In addition, the relationship between the profile of the side brush 40, the drive wheel 61, and the body 50 will be described. Fig. 5 is a bottom view of the self-propelled electric sweeper C. The distance between the center of the side brush rotation center (the axis 40j1) and the center axis of the drive wheel 61 (the axis 61j) is set to L2, and the center of rotation of the side brush 40 is applied to the radial direction of the body 50 (axis) When the distance between the heart 40j1) and the outer contour of the body 50 is set to L3, the L2 system should be determined as the distance that does not press the driving wheel 61 against the bristles of the side brush 40. If the smaller the main body 50 is, the smaller the range of the driving wheel 61 and the side brush 40 is, the smaller the size is. Therefore, it is difficult to increase the side brush 40 and the bristles of the side brush 40. The length is gradually shortened.

On the other hand, in consideration of the cleaning of the corners or the wall, it is desirable to increase the bristles of the side brush 40 as much as possible, from the viewpoint of the cleaning performance of the corners or the wall edges. In other words, miniaturization can cause disadvantages.

In the present embodiment, the center of rotation of the side brush 40 (the axis 40j1) is disposed near the outer contour of the body 50, and L2 is increased. Moreover, at this time, by setting the relationship of L2/L3 to 4 or more, even when the size of the main body 50 is Φ260 or less, it is possible to effectively clean the wall or corner.

Regarding the suction port 17 (Fig. 4), due to the pair of drive wheels 61 The distance is small, and therefore it is necessary to arrange it in front of or behind the drive wheel 61 of a wide width.

The pair of right and left side brush 40 is disposed in front of the suction port 17. Therefore, if the rotating brush 5 and the suction port 17 that guide the dust to the suction port 17 are disposed in front of the pair of driving wheels 61, in order to achieve miniaturization, the pair of driving wheels 61 are in the front side. The area is narrow and the size of the rotating brush 5 is reduced. The rotating brush 5 is rotated in the horizontal direction (the left-right direction in this embodiment) as the rotating shaft 5j. The rotating brush 5 is positioned further rearward than the rear end of the drive wheel 61.

Therefore, the pair of right and left side brush 40 is disposed in front of the drive wheel 61, and the rotary brush 5 and the suction port 17 are disposed behind the drive wheel 61. In addition, it is a configuration in which only the region in which the side brush 40U (refer to FIG. 5) is disposed is protruded outward. Moreover, since the rotating brush 5 is disposed behind the body 50 of the sensor in which the obstacle is not detected, it is housed in the rear side of the body 50 when viewed from the side. The shape of one of the slightly rounded shape or the slightly rounded shape is not hindered during the walking or turning operation, but is placed in the vicinity of the driving wheel 61 as much as possible to ensure a wide range. Wide size in the horizontal direction. In the present embodiment, by providing the rotating brush 5 at a position further rearward than the rear end of the driving wheel 61, it is easy to ensure the width of the rotating brush 5. The width of the rotating brush 5 is set to be 50% or more of the width of the body 50 to ensure the cleaning performance. The self-propelled electric sweeper C of this embodiment is set to have a wide size of 260 mm. In the following miniaturized shape, the width of the rotating brush 5 is set to 130 mm or more.

Further, the rotating brush 5 is provided with a motor or a mechanism for transmitting power from the motor at the outer side in the direction of the shaft (rotation shaft 5j). In this case, if the rotating brush 5 is disposed between the pair of driving wheels 61, it is extremely difficult to ensure the width of the rotating brush 5. In the present embodiment, since the rotating brush 5 is disposed at a rear side of the rear end of the pair of driving wheels 61, for example, one or both of the motor and the transmitting mechanism may be provided (Fig. 10 (a The speed reduction mechanism 5G, the fixture 5K, and the like are disposed directly behind the drive wheel 61, and it is easy to ensure the width of the rotating brush 5.

Further, as shown in Fig. 4, the electric blower 81 is disposed at a central portion between the pair of drive wheels 61, and the flow path from the suction port 17 to the electric blower 81 is short. Dust is sucked directly into the dust box K.

The rechargeable battery B (refer to FIGS. 4 and 5) is disposed in front of a pair of driving wheels 61 behind the pair of side brushes 40 in the free space.

The self-propelled electric sweeper C is miniaturized by the arrangement of the above-described constituent elements.

In addition, in order not to increase the height dimension of the self-propelled electric sweeper C, it is arrange|positioned so that it may not overlap each component as much as possible.

Hereinafter, each of the self-propelled electric sweeper C described above is used. The composition of the department is described in detail.

As shown in Fig. 5, at the lower portion of the self-propelled electric sweeper C, a pair of driving wheels 61 are provided at the center in the front-rear direction, and one auxiliary wheel is provided in the front side. 83.

As shown in FIG. 4, in a state where the self-propelled electric sweeper C is placed on the ground Y of the cleaning surface, the suction portion 10 (rotating brush 5) is coupled to the drive wheel 61 (refer to FIG. 5). The auxiliary wheel 83 is grounded together with the ground Y of the cleaning surface. With the drive wheel 61 and the auxiliary wheel 83, the body 50 is held at a specific height from the ground Y. That is, the self-propelled electric sweeper C performs three-wheeled walk.

The self-propelled electric sweeper C rotates the side brush 40 of the front portion (arrow α1 in Fig. 5) and concentrates the dust on the front side. The dust that has been concentrated is covered from the front to the rear, and is guided to the rotating hair by the pair of first and second guiding brushes 45 and the pair of left and right guiding brushes 47. Brush 5 places. By rotating the brush 5, the dust is always transported to the suction port 17 (refer to Fig. 4).

The dust conveyed to the suction port 17 is sucked into the dust box K (refer to FIG. 4) by the electric blower 81 (refer to FIG. 6).

As shown in FIGS. 1(a) and 1(b), the self-propelled electric sweeper C is provided with a body 50 including a housing 91 which is an upper wall (and a part of a side wall). And a bottom wall (and a part of the side wall) lower housing 51 (refer to FIG. 2) and a bumper 92 disposed at the front portion. Upper housing 91 and lower housing 51, The frame of the self-propelled electric sweeper C is formed.

At the upper casing 91, there is no cover that covers the dust box K, and the dust box K is exposed to the upper space and is housed. Therefore, the user can freely attach and detach the dust box K in the up and down direction, and can also directly operate the operation panel 91p.

As shown in FIG. 5, in the lower casing 51, a pair of left and right drive mechanism accommodating portions 54, a pair of left and right side brush mounting portions 82, and a rear hole portion 52 are formed. And a central portion of the exhaust port 53 and a battery housing portion 55 (refer to FIG. 4).

The drive mechanism accommodating portion 54 (refer to FIG. 5) houses a drive mechanism including a drive wheel 61 that is exposed below, a travel motor 57 (refer to FIG. 6), and a speed reduction mechanism.

The side brush mounting portion 82 is attached with a side brush 40.

The hole portion 52 is fixed with a suction portion 10 for sucking the dust collected by the cleaning.

The exhaust port 53 is exhausted by the electric blower 81.

At the battery housing portion 55 (refer to FIG. 4), the rechargeable battery B is housed.

A battery housing portion 55 that houses the rechargeable battery B is formed in front of the lower casing 51. The opening of the battery housing portion 55 of the lower casing 51 is closed from below by the front cover 56 (refer to FIG. 5). The front cover 56 is a substantially rectangular plate-shaped member that is attached to the lower casing 51. The front cover 56 is provided with a locking claw 56a near the center of the front portion, and a screw hole 56b is provided at the left and right sides of the rear portion. Front cover 56, so that The locking claw 56a is locked to the lower casing 51, and is screwed into the screw hole 56b to be fixed to the lower casing 51 from below.

(drive wheel 61)

A pair of driving wheels 61 (refer to FIG. 5) are provided in the front-rear direction central portion of the lower casing 51 so as to be exposed to the lower side of the main body 50 in the left-right direction. The drive wheel 61 is a wheel that can advance, retreat, and revolve the body 50 by rotating. At the lower casing 51, two drive mechanism accommodating portions 54 (refer to FIG. 5) are formed, and the drive mechanism accommodating portions 54 are accommodating a drive mechanism including a travel motor 57 (refer to FIG. 6). ) and its speed reduction mechanism.

The drive wheel 61 is supported by the body 50 by a support mechanism housed in the drive mechanism housing portion 54. The support mechanism includes an arm 71 that supports the drive wheel 61 to be freely movable up and down.

(assisted wheel 83)

The auxiliary wheel 83 (refer to FIG. 5) is disposed at the center in the left-right direction of the front side of the lower surface of the body 50. The auxiliary wheel 83 is attached to the circular auxiliary wheel mounting portion 84 of the front cover 56. The auxiliary wheel 83 is pivotally supported by a frictional force generated between itself and the ground with the movement of the body 50, and is supported by the shaft.

The auxiliary wheel 83 is an auxiliary wheel for holding the body 50 at a specific height from the ground Y (refer to FIG. 4) and smoothly moving the self-propelled electric sweeper C. The auxiliary wheel 83 is configured to be capable of The self-orientation is rotated 360 degrees in the horizontal direction.

(electric blower 81)

At the center of the body 50, an electric blower 81 is provided (refer to Figs. 4 and 6). The electric blower 81 is provided with a function of discharging the air in the dust box K to the outside by the rotational driving to generate a negative pressure, and sucking the dust from the ground Y via the suction port 17 (the suction portion 10). At the outer peripheral surface of the electric blower 81, an elastic body is provided. By causing the elastic body to be interposed as described above, the vibration of the electric blower 81 is attenuated and becomes difficult to be transmitted to the body 50, and the vibration and noise of the body 50 can be reduced. Further, the electric blower 81 is disposed in the vicinity of the center of the lower casing 51.

At the suction portion 10 fixed to the hole portion 52 of the lower casing 51, as shown in Fig. 4, the opening has a suction opening 17. The suction port k3 of the dust box K is opened so as to be inserted into the suction port 17. At the dust box K, a dust collecting screen F is provided opposite to the electric blower 81 (refer to Fig. 15).

(air flow path)

By driving the electric blower 81, as shown by an arrow β1 in Fig. 4, a suction port 17 from the rotating brush 5 and the scraping brush 1 toward the suction portion 10 and the suction port k3 of the dust box K are generated. Air flow. Thereafter, from the suction port k3 of the dust box K, as shown by β2 in Fig. 4, the air flow passes through the dust box K and passes through the dust collecting filter F and is electrically sent. The blower 81 is discharged to the outside of the body 50 from the exhaust port 53 (refer to FIG. 2) at the center of the lower casing 51. In this manner, the dust is removed from the air sucked into the dust box K by the dust collecting screen F.

According to this configuration, the dust-containing air is directly guided to the inside of the dust box K from the suction port 17 of the suction unit 10 in a short flow path. Therefore, the loss in the flow path of the air flow is small. On the other hand, in the prior art, since the flow path of the air flow is configured to be curved or long, the loss in the air flow path is large.

(brush type)

As shown in FIG. 5, on the lower surface of the main body 50, a side brush 40 disposed at one of the front sides, a rotating brush 5 disposed at the rear, and a scraping brush 1 are provided.

The pair of side brush 40 is attached to the right and left side brush mounting portions 82, and is rotatably supported around the right and left rotating shafts 40j.

Between the pair of side brush 40 and the rotating brush 5, the pair of right and left first guide brushes 45 and the second guide brush 47 are used as the bristle members from the lower side of the body 50 toward the obliquely downward direction. Make a stand-up setting (refer to Figure 4).

The first guide brush 45 is disposed on the side of the rotating shaft 40j of the side brush 40 and the oblique side of the arm 71 in a state where the front cover 56 is attached to the lower casing 51 (second guide hair) At the position where the front end of the brush 47 is connected. The pair of second guiding brushes 47 are attached to the inner side of the extension line of the side wall of the rotating brush housing portion 15 at the left and right arms 71. The drive wheels 61 are arranged side by side in a direction slightly parallel.

The pair of side brush 40 is rotated toward the inside around the rotating shaft 40j extending in the vertical direction (arrow α1 in Fig. 5), and is placed on the ground outside the front side of the self-propelled electric sweeper C. The dust is scraped and collected to the lower central portion of the body 50.

The rotating brush 5 is rotated around the rotating shaft 5j extending in the left-right direction as shown by an arrow α3 in Fig. 4 . The scraping brush 1 is rotated around the rotating shaft 1j extending in the left-right direction as shown by an arrow α4 in Fig. 4 .

The dust collected on the floor at the lower central portion of the main body 50 by the side brush 40 is a pair of left and right first guiding brushes 45 and a pair of left and right second guiding brushes 47. It is guided toward the rotating brush 5 and the scraping brush 1.

The dust guided to the vicinity of the rotating brush 5 and the scraping brush 1 is caused by the air flow caused by the electric blower 81 and the rotation of the rotating brush 5 (arrow α3 in Fig. 4) and the scraping brush The rotation of 1 (the arrow α4 of Fig. 4) is concentrated into the dust box K through the suction port 17 of the suction portion 10 and the suction port k3 of the dust box K.

(first guide brush 45, second guide brush 47)

The first guiding brush 45 (refer to FIG. 5) is a planting hair that is fixed to the groove portion of the front cover 56. The first guide brush 45 is a brush that induces dust collected by the side brush 40 to be guided between the left and right second guide brushes 47 and guided to the suction portion 10. The first guiding brush 45 is ideal. It is the length that will come into contact with the cleaning object (floor Y, carpet, etc.) during use. Thereby, it is possible to prevent dust from fleeing from between the first guide brushes 45.

The second guiding brush 47, as shown in Fig. 5, is a planting hair fixed at the groove portion of the arm 71. The arm 71 is a member that can rotate the drive wheel 61 in the vertical direction around the rotation axis in the front-rear direction with respect to the inner side in the left-right direction of the drive wheel 61. That is, the drive wheel 61 is supported on one side at the arm 71.

The second guide brush 47 is a brush that guides the dust collected by the side brush 40 and passes through the first guide brush 45 to the suction portion 10. The second guide brush 47 is preferably a length that constantly contacts the cleaning target (the ground Y) even when the arm 71 moves up and down during use (refer to FIG. 4). Thereby, it is possible to prevent dust from escaping from between the second guide brushes 47.

(side brush 40)

The side brush 40 shown in Fig. 5 is a brush having a rotating shaft 40j in a slightly vertical direction. By causing the side brush 40 itself to be rotationally driven, it is possible to guide the dust located at a place where the rotating brush 5 such as a corner of the room, which is located outside the main body 50, is hard to reach, to the suction portion 10 (suction port) 17). A portion of the side brush 40 is exposed from the body 50 when viewed from above (refer to Fig. 10(a)).

The side brush 40 is provided with bristles that are radially extended at 120° when viewed from above, and are more in the suction portion 10 than the suction portion 10 It is placed on the left and right in front. The side brush 40 is such that its root is fixed to the side brush holder 41. As shown in Fig. 1(a) and Fig. 4, the hair of the side brush 40 is inclined so as to gradually approach the ground surface Y of the cleaning surface toward the front end, and the front end is adjacent to the ground Y phase. Pick up.

The side brush holder 41 (refer to Fig. 2) is disposed near the bottom surface of the lower casing 51 and is coupled to the side brush motor 42m (refer to Fig. 6). By driving the side brush motor 42m, the side brush 40 is rotated inward (arrow α1 in Fig. 2), and the dust is scraped and collected between the left and right first guide brushes 45.

(rotating brush 5)

Fig. 7(a) is a perspective view of the rotating brush 5, and Fig. 7(b) is a cross-sectional view of the rotating brush 5.

The rotating brush 5 is a slightly cylindrical type brush having a rotating shaft 5j in the horizontal direction. In the present embodiment, it is made slightly parallel to the axis (left-right direction) passing through the center of rotation of the driving wheel 61. Configuration (refer to Figure 5). The rotating brush 5 is continuously provided from one end side in the longitudinal direction (left-right direction) of the rotating brush accommodating portion 15 to the other end side. The rotating brush 5 is rotatably supported around a slightly horizontal rotating shaft 5j (refer to FIG. 4) extending in the left-right direction at the suction portion 10.

The rotating brush 5 is rotated in the first direction of rotation in the vertical direction by rotating the brush motor 21 (refer to FIG. 6) (FIG. 4) The arrow α3) is rotationally driven. The rotating brush 5 is rotated in the same direction as the direction in which the driving wheel 61 is rotated before the body 50 is advanced. In the present embodiment, even if the rotational direction of the drive wheel 61 is reversed and reversed when the vehicle is retracted, the rotational direction of the rotary brush 5 can be maintained in the first rotational direction (arrow α3 in Fig. 4). Moreover, the rotating brush 5 is provided with the planting hair 5c and the non-woven fabric 5f from the outer peripheral surface 5d of the rotating brush 5 in the spiral shape. The length of the hairs of the hairs 5c is such that the hairs 5c are brought into contact with the ground Y, and are formed to be longer than the non-woven fabric 5f.

The planting hair 5c may be a plurality of types of plant hair having different lengths of different planting hairs and different planting hairs, or a single type of planting hair. The non-woven fabric 5f is characterized in that it is harder and bent than the plant hair 5c. That is, the non-woven fabric 5f is a structure which is harder and freely bendable than the hair graft 5c.

The nonwoven fabric 5f is formed by, for example, superimposing synthetic resin (polyester or the like) without being woven. The non-woven fabric 5f is disposed between the first planting direction 5 (the arrow α3 of FIG. 4) between the planting hairs 5c arranged in a spiral shape. That is, at the time of the rotation of the rotating brush 5, after the harder non-woven fabric 5f is rotated first, the softer hair 5c is less abutted against the ground Y than the ground fabric Y (refer to Fig. 7(b)). For example, in the rotational direction (the direction of the arrow α4 of Fig. 7(b)), the distance between the implant 5c and the non-woven fabric 5f in front of the implant 5c is formed between the non-woven fabric 5c and the non-woven fabric 5f behind the implant 5c. The distance is shorter.

That is, when the rotation of the rotating brush 5 is rotated, it becomes When the value 5c is rotated, the non-woven fabric 5f does not become the impedance of the implant 5c.

In this case, the hairs 5c of the rotating brush 5 can also be a plurality of types of plant hairs of different lengths, such as different planting hairs, different hardnesses, or a single type of planting hair, with respect to the rotation axis 5j (reference drawing) 7) Arrange in a way that stands out in the normal direction. Similarly, the non-woven fabric 5f can be disposed so as to protrude in the normal direction with respect to the rotation shaft 5j (refer to FIG. 7).

By the presence of the non-woven fabric 5f between the hairs 5c, the silk thread does not enter the depth of the hairs 5c, and the occurrence of the filaments being caught in the hairs 5c is suppressed. Therefore, the cleaning of the hairs 5c of the rotating brush 5 is simple. Further, the non-woven fabric 5f may be formed of a material other than the non-woven fabric such as rubber or elastomer as long as it has a property of being harder and bent than the plant hair 5c.

At one end (the left side of the drawing) of the rotating shaft 5j of the rotating brush 5, a fitting portion 6 is provided, which is provided at the rotating brush accommodating portion 15 (refer to FIG. 5). A fitting recess of a bearing (not shown) is fitted. The fitting portion 6 is a polygon having an odd angle when viewed from a cross section perpendicular to the rotation axis 5j from the viewpoint of the conduction of the rotational force, etc. (in the present embodiment, it is 5) The angle is formed in a tapered shape toward the end of the rotating shaft 5j.

The bearing is connected to a speed reduction mechanism 5G (refer to FIG. 10(a)) that transmits the rotational force of the rotary brush motor 21 (refer to FIG. 6) to the rotary brush 5.

As described above, a bearing (not shown) is provided at the other end (the right side in Fig. 7) of the rotating shaft 5j of the rotating brush 5. The bearing is locked at the fixture 5K (refer to FIG. 10(a)) formed at the left side of the rotating brush housing portion 15.

(scraping brush 1)

The scraping brush 1 is a brush having a rotating shaft in the horizontal direction. In the present embodiment, it is disposed behind the rotating brush 5 along an axis (left-right direction) passing through the center of rotation of the driving wheel 61. Party (refer to Figure 5). The scraping brush 1 is continuously disposed from one end side in the longitudinal direction (left-right direction) of the scraping brush accommodating portion 11 to the other end side. The scraping brush 1 is of a substantially cylindrical shape having a rotating shaft 1j (refer to FIG. 4) and is rotatably supported at the suction portion 10. Further, the scraping brush 1 is attached to one of the surfaces of the shaft portion or is provided integrally with the planting hair 2 (refer to Figs. 4 and 5).

The ends of the rotating brush 5 and the ends of the scraping brush 1 (refer to FIG. 5) are adjacent to each other. For example, the hair 5c of the rotating brush 5 can be configured to be in contact with the hair 2 of the scraping brush 1. In the present embodiment, the brush 1 and the rotating brush 5 are scraped together so as to be in contact with each other at the root or the root of the respective hairs 5c and 2. Therefore, by rotating the brush 5, it is possible to impart its own rotational force to the scraping brush 1. That is, the scraping brush 1 is given a rotation corresponding to the rotating brush 5, that is, a rotational force is applied in a direction opposite to the rotating brush 5.

Here, if the scraping brush 1 is in contact with the cleaning surface In the state in which the main body 50 is advanced, the brush 1 is scraped off, and the first rotational direction is reversed by the frictional force imparted by the rotating brush 5 by the friction with the cleaning surface. Power, therefore, the scraping brush 1 does not always rotate constantly toward the second rotational direction (arrow α4 of Fig. 4) (refer to Fig. 4).

In the present embodiment, when the body 50 is advanced, the brush 1 is scraped, and since the rotational force from the rotating surface is larger than that from the rotating brush 5, the direction is larger. The first rotational direction (arrow α3 of Fig. 4) is passively rotated. At this time, as a cleaning surface, it is conceivable to lay a floor, a blanket, a tatami, and the like. At this time, since the rotational force of the second rotational direction (arrow α4 of FIG. 4) from the rotating brush 5 is applied, the rotational speed of the scraping brush 1 is different from the forward speed of the main body 50. The value becomes and produces an impedance relative to the cleaning surface. Therefore, the scraping brush 1 can collect dust so as to be scraped off from the ground Y. In addition, the planting hair 2 is provided so as to cover the entire circumference of the scraping brush 1 in the circumferential direction.

Inside the scraping brush 1, a weight is used to obtain a weight balance between the front and the rear rechargeable battery B. The weight is made of iron, for example, with a high density relative to the volume.

On the other hand, when there is no weight in the rear portion with respect to the weight balance before and after the front rechargeable battery B, the front rechargeable battery B is heavy, and the self-propelled electric sweeper C is likely to become A posture that is inclined toward the front and rushed in. In addition, the rear portion of the self-propelled electric sweeper C is inclined upward, and the suction portion 10 and the ground surface of the cleaning surface are Y. The distance between the two is increased, and the attraction of the self-propelled electric blower 81 (refer to Fig. 6) is impaired. As a result, there is a possibility that the sweep performance of the self-propelled electric sweeper C is lowered.

Therefore, by accommodating the weight inside the scraping brush 1 in the rear portion, the weight balance of the weight can be obtained by the weight of the weight, and the planting and cleaning surface of the rotating brush 5 is not caused (the ground Y The grounding area between them becomes too wide. As a result, an increase in the load of the rotating brush motor 21 (refer to FIG. 6) is prevented.

As described above, the gap between the rotating brush 5 and the scraping brush 1 is connected to the dust box K via the space between the rotating brush 5 and the rotating brush housing portion 15 and the suction port 17.

[Detailed Structure of Drive Wheel 61]

Fig. 8(a) is a perspective view of the drive wheel on the right side as viewed obliquely from the front, and Fig. 8(b) is a view in the direction of the arrow B of Fig. 8(a). Fig. 9(a) is a view in the direction of the arrow C in Fig. 8(a), and Fig. 9(b) is a view in the direction of the arrow D in Fig. 8(a).

Since the left and right drive wheels 61 have the same configuration and are similar in configuration, the drive wheels 61 on the right side will be described, and the description of the drive wheels 61 on the left side will be omitted.

The drive wheel 61 has an outer wheel 61a, a center wheel 61b, and an inner wheel 61c.

The diameter s1 of the center wheel 61b (refer to Fig. 8(b)) is larger than the diameter s2 of the outer wheel 61a and the diameter s3 of the inner wheel 61c.

The outer peripheral surface 61b1 of the center wheel 61b is formed to have a smooth cylindrical surface.

The diameter s2 of the outer wheel 61a and the diameter s3 of the inner wheel 61c are set to be slightly the same length.

The wide size s5 of the outer wheel 61a (refer to Fig. 9(a)) is set to be larger than the wide size s4 of the center wheel 61b and the wide size s6 of the inner wheel 61c. The wide size s5 of the outer wheel 61a corresponds to a slight half of the width dimension s7 of the drive wheel 61.

The outer peripheral surface of the outer ring 61a is formed with a concave shape 61a1 and is formed as an uneven surface. Further, at both ends of the concave shape 61a1, a convex shape 61a2 and a T shape 61a3 are alternately formed. The convex shape 61a2 and the T shape 61a3 extend in the axial direction of the outer ring 61a. The T shape 61a3 is such that the width of the center wheel 61b side is larger than the width of the side away from the center wheel 61b. The width of the convex shape 61a2 is not particularly limited, but may be set to be slightly the same as the width of the side of the center wheel 61b of the T shape 61a3. Moreover, the outer peripheral surface of the inner ring 61c is formed with the concave shape 61c1, and is formed in the uneven surface.

The circumferential length of the concave shape 61a1 on the outer circumferential surface of the outer ring 61a is longer than the circumferential length of the concave shape 61c1 of the outer circumferential surface of the inner ring 61c. Further, as shown in Fig. 8(a), the depth dimension of the concave shape 61a1 of the outer circumferential surface of the outer ring 61a is deeper than the depth dimension of the concave shape 61c1 of the outer circumferential surface of the inner wheel 61c.

According to this configuration, when the local surface Y is a flat surface such as a floor surface, the center wheel 61b of the drive wheel 61 is used, and the self-propelled electric cleaning is performed. The sweeper C can walk with less load and can also suppress the occurrence of noise during walking. Further, when the local surface Y is a piece of elastic or softness such as a carpet, the concave shape 61c1 of the outer circumferential surface of the inner wheel 61c of the driving wheel 61 can reliably grasp the ground Y, and the outer wheel 61a The convex shape 61a2 is bitten into the ground like a spike shoe, and the self-propelled electric sweeper C (refer to FIG. 1(a)) is capable of walking.

When there is a step on the ground surface Y, the stepped shape 61a1 on the outer peripheral surface of the drive wheel 61 can surely grasp the step, and the self-propelled electric sweeper C can travel across the step. Further, the T shape 61a3 grasps the step as a hook and becomes easier to cross the step.

Further, since the outer ring 61a disposed at the outermost side of the drive wheel 61 has the deepest concave shape 61a1, the step difference is surely grasped, and the self-propelled electric sweeper C is capable of rotating momentum around the vertical direction. The force is rotated in a state where the force is small.

Therefore, there is no case where the running load of the self-propelled electric sweeper C is increased, and power consumption can be suppressed.

Further, as shown in Fig. 9(a), the wide size s5 of the outer ring 61a is set to be larger than the wide size s4 of the center wheel 61b and the wide size s6 of the inner wheel 61c. The grip of the outer wheel 61a can be further increased.

(crossing the convex portion 44)

As shown in Figures 2, 4, and 5, in the auxiliary wheel 83 and one At the central portion between the drive wheels 61, a convex shape crossing convex portion 44 is formed downward, and is formed to extend in the front-rear direction.

Further, the protruding portion 44 is disposed between the exhaust ports 53 so as not to impede the exhaust of the exhaust port 53.

As shown in FIG. 3, the traverse portion 44 is formed to extend rearward between the pair of drive wheels 61 starting from a pair of drive wheels 61 exposed from the lower casing 51.

The height across the convex portion 44 is formed to be lower than the height at which the drive wheel 61 is moved upward by the rotation of the arm 71 (refer to FIG. 5). In other words, the traverse portion 44 is formed at a position higher than the lowermost height when the drive wheel 61 is moved upward.

(body 50)

Fig. 10 (a) is a top view of the self-propelled electric sweeper C in a state where the upper casing 91 and the control device 95 of the circuit board are removed, and Fig. 10 (b) is a view of Fig. 10 (a) E arrow direction view.

The lower casing 51 has an outer shape close to a thin circular plate. The left and right traveling motors 57, the rotating brush motor 21, the electric blower 81, the control device 95 (refer to FIG. 6), and the like are placed on the lower casing 51.

As shown in FIG. 5, the drive mechanism accommodating portion 54 is formed at the left and right sides of the lower casing 51 which is slightly disk-shaped when viewed in plan. Further, a plurality of exhaust ports 53 are formed at positions sandwiched by the driven mechanism housing portion 54 near the center of the casing 51 when viewed from below.

At a more front side than the center of the lower casing 51, a battery housing portion 55 (refer to FIG. 4) is formed. A side brush mounting portion 82 to which the side brush 40 is attached is formed on the left and right of the battery housing portion 55. At the rear side of the lower casing 51 and at the rear side, that is, at the rear side of the exhaust port 53 and the drive mechanism accommodating portion 54 (refer to FIG. 5), the suction portion 10 is fixed (reference drawing) 4) Hole portion 52 (refer to Fig. 5).

The suction portion 10 is a member in which a suction port 17 (refer to FIG. 4) is formed and the scraping brush 1 and the rotating brush 5 are housed.

As shown in FIG. 4, the bumper 92 is provided in such a manner as to be movable in the front-rear direction in response to the pressing force applied from the outside. The bumper 92 is pressed in the front direction by a pair of right and left bumper springs (not shown). The bumper spring has a J-shaped front end which is in contact with the inner wall surface of the bumper 92. If the urging force from the obstacle is applied to the bumper spring via the bumper 92, the bumper spring is elastically deformed, and the bumper 92 is urged toward the front direction, and the bumper 92 is retracted. If the force of the bumper 92 is removed from the obstacle and the force from the obstacle disappears, the bumper 92 returns to the original position by the elastic force of the bumper spring. In addition, the bumper 92 retreats (that is, the contact with the obstacle) is detected by a sensor type (infrared sensor) (refer to FIG. 4) described later, and the detection result is detected. It is input to the control device 95 (refer to FIG. 6).

(The shape of the self-propelled electric sweeper C)

As shown in Fig. 10 (a), the self-propelled electric sweeper C is formed with a rear side wall surface c1 of a circular arc shape (radius R1) when viewed from above with respect to the rear, and at the front portion. The convex portions bulging portions c3 and c3 which are formed to have a circular arc shape (radius R1) which is curved toward the outer side with respect to the trajectory drawn by the radius R1 of the rear side wall surface c1 are formed. At the bulging portion c3, a side brush unit 40U including a side brush motor 42m for driving the side brush 40 and a side brush 40 for the side brush motor gear 42g is disposed (refer to FIG. 5 and FIG. 10(a)).

Further, the front side wall surface c2 (refer to FIG. 10(a)) of the self-propelled electric sweeper C is provided with a radius R2 which is larger than the radius R1 of the arc shape of the rear side wall surface c1 when viewed from above.

Further, as shown in Fig. 5, the position of the axis 40j1 of the rotating shaft 40j which is rotatably supported by the side brush 40 is arranged to be disposed by the rear side wall surface c1 when viewed from above. The trajectory depicted by the radius R1 is formed at a position further inside.

This is the same as the above, in order to satisfy the condition that the side brush 40 is not pressed by the driving wheel 61 and the side wall brush 40 can be used to sweep out the corners of the wall edge and the side hair can be removed. The reduction ratio of the brush motor 42m is set to a predetermined value or more, and is defined (see Fig. 5, Fig. 10(a)). By increasing the side brush motor gear 42g so that the reduction ratio of the side brush motor 42m is constant or more, it is possible to obtain a sweep torque of a certain amount or more of the side brush 40.

With the outer shape of the self-propelled electric sweeper C described above, the self-propelled electric sweeper C is small, and the side brush 40 can be The waste wheel 61 is pressed to the ground to sweep the rubbish of the corner of the wall by the side brush 40.

Further, by providing the rechargeable battery B between the pair of side brushes 40 in front of the main body 50, the rechargeable battery B can be increased, and the operation time of the self-propelled electric sweeper C can be suppressed from being lowered. . Therefore, it is possible to maintain the cleaning ability of the self-propelled electric sweeper C or to increase it while being small.

(battery housing portion 55)

As shown in FIG. 4, the battery accommodating portion 55 is formed in a space in which the rechargeable battery B is housed inside the lower casing 51, and has a downwardly facing opening surrounded by the wall surface.

(Rechargeable battery B)

Fig. 11 (a) is a perspective view of the battery case Cb in which the rechargeable battery B is loaded, viewed from the front right upper side, and Fig. 11 (b) is an arrow view of Fig. 11 (a). Fig. 11 (c) is a view in the direction of the arrow G of Fig. 11 (b).

Fig. 12 (a) is a perspective view showing the upper casing Cb1 being detached from the battery case Cb and being observed inside, and Fig. 12 (b) is a configuration of the rechargeable battery B inside the battery case Cb. A perspective view of the show.

The battery case Cb has an elongated shape and is formed by a triangular prism shape and a flat rectangular shape.

The battery case Cb is provided with an upper case Cb1 and a lower case Cb2.

A battery terminal bt of the rechargeable battery B connected to the control substrate is exposed from a portion of the battery case Cb. Inside the battery case Cb, battery cells of five rechargeable batteries B are housed (refer to FIG. 12(b)).

As shown in Fig. 12 (b), the rechargeable battery B has an elongated cylindrical shape. By having the rechargeable battery B have a circular cross-sectional shape, it is possible to reduce the occupied space.

Inside the battery case Cb, as shown in Fig. 12(b), three rechargeable batteries B are housed at one side and two rechargeable batteries B are housed at the other side. In the battery case Cb, the three rechargeable batteries B are housed in a triangular prism-shaped space, and the two rechargeable batteries B are housed in a flat rectangular parallelepiped space.

The rechargeable battery B is, for example, a lithium ion battery of a battery cell (18650). This rechargeable battery B has, for example, a size of 18 mm in diameter and 65 mm in length.

In this way, in the battery case Cb, since the rechargeable battery B of the lithium ion battery is housed, the control board b1 for controlling the rechargeable battery B is disposed at the package of the battery case Cb (refer to Figure 12 (a)). By arranging n battery cells at one side and configuring n+1 battery cells at the other side as in the present configuration and arranging control in the space of the amount of battery cells of one difference The substrate b1 is capable of arranging the components of the rechargeable battery B with good efficiency. In addition, as long as the number of battery cells on the other side is more than one of the sides. It suffices that the control board b1 is disposed in a space caused by the difference in the number of pieces.

(main power switch 63)

As shown in FIG. 5, the main power switch 63 that turns on/off the power source of the self-propelled electric sweeper C is disposed in the direction of the axis 61j of the drive wheel 61 on one side of the lower portion of the body 50. The lower housing 51 on the outside. That is, the main power switch 63 is disposed on the lower side of the self-propelled electric sweeper C.

In the case where the main power switch 63 is disposed on the upper side of the self-propelled electric sweeper C, the water is splashed or accidentally pressed. Therefore, by disposing the main power switch 63 on the lower side of the self-propelled electric sweeper C, it is possible to suppress the splashing of water or accidental pressing.

Further, the main power switch 63 is disposed at a position of the axis 61j of the drive wheel 61 when viewed from below. Thereby, even when the drive wheel 61 is moved upward, it can be positioned higher than the lowermost side of the drive wheel 61. That is, since the main power switch 63 is disposed at a position close to the downward direction of the drive wheel 61, it is possible to avoid the situation in which it is abutted against the object on the ground Y and pressed. .

Further, the outer side of the axial center 61j of the drive wheel 61 is caused by a dead space formed by the quadrangular shape and the outline shape of the main body 50 when viewed from the lower side toward the drive wheel 61, and thus There is no case where a new space is additionally occupied in order to configure the main power switch 63.

(inhalation part 10)

As shown in FIG. 5, the suction portion 10 is attached to the hole portion 52 of the lower casing 51 from below.

As shown in FIG. 4, at the front portion of the suction portion 10, a rotating brush accommodating portion 15 for accommodating the rotating brush 5 is formed. At the rear portion of the rotating brush accommodating portion 15, a scraping brush accommodating portion 11 for accommodating the scraping brush 1 is formed.

According to this configuration, the rotating brush 5 and the scraping brush 1 are sequentially disposed from the front portion of the self-propelled electric sweeper C.

The rotating brush 5 and the scraping brush 1 are rotatably attached to the suction portion 10, respectively, and are configured to be detachable and attachable.

Further, from the suction portion 10 toward the downstream side, air paths generally formed by the dust box K (FIG. 4), the dust collecting screen F, the electric blower 81, and the exhaust port 53 (refer to FIG. 5) are sequentially formed. The suction portion 10 is a member in which the suction port 17 is formed and the rotating brush 5 is housed and the brush 1 is scraped (refer to FIG. 4). At the suction portion 10, a rotary brush motor 21 is fixed (refer to Fig. 6).

(sensor class)

The bumper sensor 8a (refer to FIG. 6) is an infrared sensor that detects the back of the bumper 92 (that is, the contact with the obstacle). For example, when the bumper 92 comes into contact with an obstacle, the light receiving time of the sensor light (reflected light) becomes short. With this light receiving time The corresponding detection signal of the change is output to the control device 95.

The distance measuring sensor 8b (refer to FIG. 6) is an infrared sensor that detects the distance from the obstacle. In the present embodiment, the distance measuring sensor 8b is provided at a total of five places in three places on the front side and two places on the side.

The distance measuring sensor 8b is provided with a light-emitting portion (not shown) that emits infrared light, and a light-receiving portion (not shown) that reflects light that is reflected by the obstacle and returns. The distance from the obstacle is calculated based on the intensity of the reflected light detected by the light receiving unit. Further, at least the proximity of the distance measuring sensor 8b of the bumper 92 is formed by resin or glass which transmits infrared rays.

In addition, as the ranging sensor 8b, other types of sensors (for example, an ultrasonic sensor, a visible light sensor) may be used. Further, it is also possible to set a plurality of the distance measuring sensors 8b as sensors for determining whether or not an obstacle is present (determining whether or not an obstacle exists within the set distance) to reduce the cost. .

The ground distance measuring sensor 8c (refer to FIG. 5) is an infrared sensor for measuring the distance from the ground, and is disposed at four places of the front, rear, left, and right below the lower casing 51. By detecting the large step of the stairs or the like by the ground distance measuring sensor 8c, it is possible to prevent the self-propelled electric cleaning machine C from falling (from a staircase or the like). For example, when a step of about 30 mm is detected in the front by the distance measuring sensor 8c by the ground, the control device 95 (refer to FIG. 6) controls the traveling motor and retracts the body 50, and converts Forward direction. Here, it can also The number of the ground-based distance measuring sensors 8c, for example, the sensor having a small frequency after the use, is determined only for the presence or absence of the step (whether or not there is a step above a set distance). Sensors to reduce costs.

The rotation speed and the rotation angle of the traveling motor 57 (refer to FIG. 6) are detected based on the traveling motor pulse output. Further, the control device 95 calculates the moving speed and the moving distance of the main body 50 based on the rotational speed and the rotational angle detected by the travel motor pulse output, the gear ratio of the speed reduction mechanism, and the diameter of the drive wheel 61.

The traveling motor current measuring instrument is a measuring instrument for measuring the current flowing at the armature winding of the traveling motor 57. Similarly, the current meter for the electric blower measures the current value of the electric blower 81, and the current sensor for the rotary brush motor measures the current value of the rotary brush motor 21 (refer to FIG. 6). The two side brush motor galvanometers measure the current value of the side brush motor 42m. Each current meter outputs the measured current value to the control device 95. Thereby, it is possible to detect an abnormality such as foreign matter being caught in the rotating brush 5 and causing the rotation to stop, and reporting to the user by a display panel (not shown).

(Operation key 97)

The operation key 97 is a button for outputting an operation signal corresponding to the operation of the user to the control device 95 (refer to FIG. 6) (refer to FIG. 1(a), (b)), for example, having a power key And the beginning of cleaning /End button, and the sweep mode selection button to change the sweep mode.

The display panel driving device is a device that applies a voltage to the electrodes of the display panel in response to a command from the control device 95. The display panel (not shown) includes a plurality of LEDs (Light Emitting Diodes) and a seven-segment display (not shown), and displays the operating state of the self-propelled electric sweeper C.

The rechargeable battery B is, for example, a secondary battery that can be reused by charging, and is housed in the battery housing portion 55 (refer to FIG. 4). The electric power from the rechargeable battery B is supplied to the sensors, the motors, the respective driving devices, and the control device 95.

The traveling motor driving device (not shown) is an inverter that drives the traveling motors on the left and right sides or a pulse waveform generating device that is controlled by PWM, and operates in response to a command from the control device 95. The same applies to the electric blower drive device, the rotary brush motor drive device, and the side brush motor drive device (left and right). Each of these drive devices is disposed at a control device 95 within the body 50.

<Control device 95>

The control device 95 is, for example, a microcomputer (not shown), and is read by a program stored in a ROM (Read Only Memory) and developed in a RAM (Random Access Memory), and the CPU (Central Processing) Unit) implements various processes.

The control device 95 is adapted from the operation key 97 (refer to FIG. 1) And the signal input by the sensor class to perform the calculation processing, and output the command signal to each of the above-mentioned driving devices.

(dust box K)

Fig. 13 is a perspective view showing the state in which the handle of the dust box K of the self-propelled electric sweeper is raised from the upper rear side, and Fig. 14 is for the self-propelled electric sweeper. A perspective view of the state in which the handle of the dust box K is raised and viewed from the front upper side.

Fig. 15 is a perspective view showing the state in which the handle of the dust box K of the self-propelled electric sweeper is removed from the front upper side, and Fig. 16 is for holding the self-propelled electric sweeper. The handle of the dust box K is removed and the perspective view is taken from the upper rear.

The dust box K is a container for recovering dust sucked from the floor Y through the suction port 17 (the suction portion 10) (see FIGS. 1(a), 4, 15, and 16). The dust box K is provided with a main body k1 for accommodating the collected dust, and a handle k2 which is foldable with respect to the main body k1. The main body k1 of the dust box K has a shape such that the lower surface corresponds to the shape of the upper portion of the suction portion 10, and is formed at a position facing the suction port 17 to be formed with the suction port 17. Corresponding shape inflow k3 (refer to Fig. 4). The body k1 has a substantially rectangular parallelepiped shape as a whole. The main body k1 is opposed to the suction port 81s (refer to FIG. 6) of the electric blower 81, and is provided with a dust collecting screen F. The handle k2 is freely foldably disposed above the body k1.

The removal of the dust box K is carried out as follows.

In the state where the cleaning is completed, the self-propelled electric sweeper C is in the state shown in Figs. 1(a) and 1(b).

When the dust box K is detached, the user inserts the hand into the insertion port k0 of the dust box K, and as shown in FIGS. 13 and 14, the handle k2 stands with respect to the body k1. Start. Thereafter, the handle k2 is gripped, and as shown in Figs. 15 and 16, the dust box K is detached from the body 50 from above.

On the other hand, in the case where the dust box K is attached to the main body 50, it is only necessary to follow the order reverse to the above procedure.

In this manner, since the dust box K can be attached or detached in the vertical direction with respect to the main body 50, the dust to be cleaned or the dust collecting screen F of the dust box K is cleaned. The convenience of exchange, etc. is better. Further, by forming at least the upper side of the dust box K by a transparent member, the user can directly visually recognize the dust contained in the inside, and before the dust box K is filled, It is confirmed that the dust is discarded, so the convenience of use is preferred.

(size of self-propelled electric sweeper C)

Figure 17 is a perspective view of a table and chair set having a chair and table with four feet. Figure 18 is a graph showing the spacing of the foot and the spacing of the sides of the side of the chair having 4 feet. The horizontal axis of Figure 18 represents the spacing dimension (mm), and the vertical axis represents the The ratio of the number of chairs with 4 feet to the total number (%). The black squares of Fig. 18 represent the foot spacing of the front side of the chair having 4 feet, leaving a white triangle representing the foot spacing of the side of the chair having 4 feet.

According to Fig. 18, it can be seen that almost 100% of the chairs having four feet have a foot spacing s11 of 260 mm or more on the front side and 260 mm or more in the side foot spacing s12.

Therefore, if the maximum diameter dimension Ck (refer to FIG. 10(a)) in the horizontal direction of the self-propelled electric sweeper C is set to less than 260 mm, the self-propelled electric sweeper C can be from the front foot or It is entered between the feet on the side, and the floor Y below the table and chair set having the chair and the table having four feet is cleaned by the self-propelled electric sweeper C.

Fig. 19 is a perspective view showing a table in which a storage space is attached to a furniture with feet attached. Figure 20 is a graph showing the height of the furniture with feet attached. The horizontal axis of Fig. 20 represents the height dimension (cm), and the vertical axis represents the ratio (%) of the foot-mounted furniture of all the survey objects to the total number. The black triangle of Figure 20 represents the bed, the black square, the representative sofa, the black diamond, which represents the sofa and the bed.

According to Fig. 20, it can be seen that about 50% of the sofa has a height of 10 cm or more from the ground Y. Further, about 80% of the bed is 10 cm or more from the ground Y. On the other hand, if the sofa and the bed are totaled, the height of the ground Y is about 70% or less.

Therefore, as long as the height of the self-propelled electric sweeper C is Ch (Reference 3) When the temperature is less than 10 cm, the self-propelled electric sweeper C can clean about 70% of the sofa and the floor Y below the bed.

Therefore, in the self-propelled electric sweeper C, the outermost diameter dimension Ck (refer to FIG. 10(a)) in the horizontal direction is set to be less than 260 mm, and the height dimension Ch (refer to FIG. 3) is set to Full 10cm (100mm). For example, the maximum diameter dimension Ck of the self-propelled electric sweeper C is set to 250 mm, and the height Ch (refer to FIG. 3) of the self-propelled electric sweeper C is set to 92 mm.

By this, it is possible to clean the floor Y below the table and chair set having the chair and the table having four feet by the self-propelled electric sweeper C. Moreover, it is possible to clean the ground Y below the furniture of about 70% of the foot-attached furniture by the self-propelled electric sweeper C.

According to the self-propelled electric sweeper C described above, the rechargeable battery B is disposed at the front portion of the body 50, and the space on both sides of the front portion is compared with the size of the circle at the rear of the body 50 (Fig. 10 (Fig. 10 A) The radius R1) is further expanded, and the side brush unit 40U is disposed.

Thereby, by expanding the size of the circle at the rear of the body 50 (the radius R1 of FIG. 10(a)) and expanding the size corresponding to the space of the side brush 40, it is possible to The width dimension and the front-rear direction dimension of the body 50 are miniaturized.

The side brush 40 can be brought close to the corner portion of the front side, and the corner portion can be cleaned.

It is not necessary to reduce the size of the rechargeable battery B, and it is possible to maintain the operation time of the self-propelled electric sweeper C.

Further, by arranging the rotating brush 5 at a position further rearward than the rear end of the driving wheel 61, the width of the rotating brush 5 can be ensured. For example, in the present embodiment, the width of the rotating brush 5 is set to 130 mm or more.

Therefore, it is possible to obtain a self-propelled electric sweeper C which is excellent in usability and small in size and high in cleaning performance.

The above is a detailed description of the embodiment of the self-propelled electric sweeper of the present invention. In addition, the content of the present invention is not limited to the embodiment, and it is a matter of course that changes, modifications, and the like can be appropriately made without departing from the spirit and scope of the invention. Further, in the present embodiment, the self-propelled sweeping machine has been described as an example. However, even in the case of a battery, a can, a stick, and a hand-held type are used as a power source. The suction nozzle of the sweeper is suitable for use, and has the same effect.

Claims (10)

A self-propelled electric sweeper characterized in that: a battery having a power source; and an electric blower driven by the battery and sucking dust from the suction port into the dust box; and a pair of left and right sides a brush, which is disposed at a lower portion of the front portion of the body, is driven by the battery, and is rotated in a slightly horizontal direction to concentrate dust; and a motor is driven by the battery; and a transmission mechanism is transmitted from the motor And the rotating brush is rotated by the power from the motor and rotated in a slightly horizontal direction as a rotating shaft, and guides the dust to the suction port; and the frame body houses the aforementioned a battery and the aforementioned electric blower; and a pair of driving wheels are disposed at a lower portion of the frame body and driven by the battery; and a drive mechanism housing portion is disposed between the pair of driving wheels, The battery and the side brush are disposed in front of the pair of driving wheels, and the rotating brush and the front are disposed further rearward than the rear ends of the pair of driving wheels Suction port, between the pair of drive wheels, the system is configured with the electric blower, At least a portion of the motor or the conductive mechanism is located outside the rotation axis of the rotating brush. A self-propelled electric sweeper characterized in that: a battery having a power source; and an electric blower driven by the battery and sucking dust from the suction port into the dust box; and a pair of left and right sides a brush, which is disposed at a lower portion of the front portion of the body, is driven by the battery, and is rotated in a slightly horizontal direction to concentrate dust; and a motor is driven by the battery; and a transmission mechanism is transmitted from the motor And the rotating brush is rotated by the power from the motor and rotated in a slightly horizontal direction as a rotating shaft, and guides the dust to the suction port; and the frame body houses the aforementioned a battery and the aforementioned electric blower; and a pair of driving wheels are disposed at a lower portion of the frame body and driven by the battery; and an auxiliary wheel is disposed at a lower portion of the frame body, and the frame body is When viewed from above, a pair of swells are formed on the right and left sides of the front portion of the body, and a bulge is formed to protrude outward from the trajectory formed by the radius formed by the rear portion of the body. In the bulging portion, the drive train is configured with the side portion of the brush, the motor or the transmission mechanism, the at least a portion of the rotational axis direction of the brush outside. The self-propelled electric sweeper according to the second aspect of the invention, wherein the axial center of the center of rotation of the side brush is disposed more than a trajectory drawn by the radius when viewed from above. The position inside. The self-propelled electric sweeper according to the first or second aspect of the invention, wherein the drive wheel includes a first outer peripheral surface formed with a concavo-convex shape, and a smoothened cylinder The second outer peripheral surface of the surface and the third outer peripheral surface formed with a concave-convex shape having a concave shape larger than the concave shape of the uneven shape. A self-propelled electric sweeper characterized in that: a battery having a power source; and an electric blower driven by the battery and sucking dust from the suction port into the dust box; and a pair of left and right sides The brush is disposed at a lower portion of the front portion of the body and is driven by the battery, and is rotated in a horizontal direction to concentrate the dust; and the rotating brush is driven by the battery and rotated in a horizontal direction Rotating the shaft and guiding the dust to the suction port; and the frame housing the battery and the electric blower; and the pair of driving wheels are disposed under the frame and are provided by the battery Driving; and a drive mechanism housing portion is disposed between the pair of driving wheels, The battery and the side brush are disposed before the pair of driving wheels, and the rotating brush and the suction port are disposed further rearward than the rear ends of the pair of driving wheels The electric blower is disposed between the pair of driving wheels, and a straddle convex portion is provided on a lower surface of the casing so as to protrude downward. The straddle convex portion is formed from the aforementioned The front side of the driving wheel exposed by the casing is formed to face rearward, and is formed at a position higher than the lowermost height when the driving wheel is moved upward. A self-propelled electric sweeper characterized in that: a battery having a power source; and an electric blower driven by the battery and sucking dust from the suction port into the dust box; and a pair of left and right sides The brush is disposed at a lower portion of the front portion of the body and is driven by the battery, and is rotated in a horizontal direction to concentrate the dust; and the rotating brush is driven by the battery and rotated in a horizontal direction Rotating the shaft and guiding the dust to the suction port; and the frame housing the battery and the electric blower; and the pair of driving wheels are disposed under the frame and are provided by the battery a driving mechanism; and a driving mechanism housing portion, which is disposed on the pair of driving wheels The battery and the side brush are disposed in front of the pair of driving wheels, and the rotating brush and the aforementioned are disposed at a position further rearward than a rear end of the pair of driving wheels a suction port, wherein the electric blower is disposed between the pair of driving wheels, and a main power switch of the self-propelled electric sweeper is disposed along a pair of driving wheels below the main body The outer side of the aforementioned drive wheel in the direction of the rotation axis. The self-propelled electric sweeper according to the first or second aspect of the invention, wherein the dust box is disposed to be exposed above, and is moved in the vertical direction to be attached and detached. A self-propelled electric sweeper characterized in that: a battery having a power source; and an electric blower driven by the battery and sucking dust from the suction port into the dust box; and a pair of left and right sides The brush is disposed at a lower portion of the front portion of the body and is driven by the battery, and is rotated in a horizontal direction to concentrate the dust; and the rotating brush is driven by the battery and rotated in a horizontal direction Rotating the shaft and guiding the dust to the suction port; and the frame housing the battery and the electric blower; and the pair of driving wheels are disposed at the lower portion of the frame and are The battery is driven; and the drive mechanism housing portion is disposed between the pair of drive wheels, and the battery and the side brush are disposed before the pair of drive wheels. The rotating brush and the suction port are disposed at a rear end of the driving wheel, and the electric blower is disposed between the pair of driving wheels, and the self-propelled electric sweeper is disposed The outermost dimension of the horizontal direction is less than 260 mm, and the height of the self-propelled electric sweeper is less than 100 mm. The self-propelled electric sweeper according to claim 8, wherein the rotating brush of the self-propelled electric sweeper is housed in a circular shape forming a rear portion of the body, and the rotating brush is It is 130 mm or more with respect to the wide dimension of the advancing direction. The self-propelled electric sweeper according to the first or second aspect of the invention, wherein the distance between the center of rotation of the side brush and the center of rotation of the drive wheel is set as described above when viewed from below. The distance between the center of rotation of the side brush and the contour of the body is more than four times.