JP2018007849A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an autonomous travel type vacuum cleaner improved in cleaning property.SOLUTION: A vacuum cleaner includes a body 50 and a suction part 10 in a lower part of the body 50. The body 50 has a width dimension of 260 mm or less and a height dimension of 100 mm or less. The suction part 10 is positioned in the vicinity of substantial center in a horizontal direction of the body 50. An end part of the suction part 10 is positioned on an outside relative to a half distance to a side end part in the horizontal direction from the center of the body 50. The suction part 10 has a width larger than a half width of the body 50.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vacuum cleaner.

  Claim 5 of Patent Document 1 includes a body having a suction port on a bottom surface, the body having a front surface and a plurality of side surfaces which are curved surfaces bulging outward, and a top portion defined by the front surface and the side surfaces. The autonomous traveling type vacuum cleaner is provided with a front apex portion that is an angle between the tangent line on the front surface and the tangent line on the side surface.

JP, 2006-77854, A

  In patent document 1, the external dimensions of the cleaner body, for example, the width and height of the cleaner body are not considered. Therefore, depending on the dimensions and installation state of the furniture installed in the space to be cleaned, the periphery and the lower part of the furniture may not be sufficiently cleaned.

  Therefore, an object of the present invention is to provide an autonomously traveling electric vacuum cleaner with improved cleaning properties.

  This invention made | formed in view of the said situation was equipped with the main body and the suction part of the lower part of this main body, The width dimension of the said main body was 260 mm or less, and the height dimension was 100 mm or less, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, the autonomous traveling type vacuum cleaner with improved cleaning property can be provided. Problems, configurations, and effects other than those described above will be described in the specification.

It is a perspective view of the autonomous running type vacuum cleaner concerning an embodiment. It is a perspective view of the state where the upper case of the autonomous running type vacuum cleaner concerning an embodiment was removed. It is a bottom view of the autonomous traveling type vacuum cleaner which concerns on embodiment. It is AA sectional drawing of FIG. It is a figure explaining the relationship between the statistical data of the dimension between the legs of the chair which is an example of furniture, and the width dimension of the autonomous running type vacuum cleaner concerning an embodiment. It is a figure explaining the relationship between the statistical data of the height dimension of the leg of the bed which is an example of furniture, and the height dimension of the autonomous traveling type vacuum cleaner which concerns on embodiment. It is a figure explaining the width dimension and height dimension of the autonomous traveling type vacuum cleaner which concerns on embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining the relationship between the width dimension and height dimension of the autonomous traveling type vacuum cleaner which concerns on embodiment, and furniture with a leg, Comprising: (A) Side view, (B) Plan view. It is a schematic diagram explaining the relationship between the width dimension and height dimension of the autonomous traveling type vacuum cleaner which concerns on the prior art example 1, and furniture with a leg, Comprising: (A) Side view, (B) Plan view. It is a schematic diagram explaining the relationship between the width dimension and height dimension of the autonomous traveling type vacuum cleaner which concerns on the prior art example 2, and the furniture with a leg, Comprising: (A) Side view, (B) Plan view. It is a bottom view explaining the relationship between the width | variety of the suction part and the width | variety of a main body of the autonomous running type vacuum cleaner which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings as appropriate. Similar components are denoted by the same reference numerals, and description thereof is omitted.
The present embodiment is not limited to the following contents, and can be implemented with appropriate modifications within the scope of the gist of the present invention.

  Of the directions in which the self-propelled vacuum cleaner C (see FIG. 1) travels, the side on which the side brush 40 is provided is the front, the vertical upward is the upper, and the directions in which the drive wheels 61 are opposed are the left and right. To do. That is, as shown in FIG. The self-propelled vacuum cleaner C mainly proceeds forward.

FIG. 1 is a perspective view of the autonomous traveling vacuum cleaner C according to the present embodiment as viewed from the left front.
The autonomous traveling type vacuum cleaner C is a vacuum cleaner that performs cleaning while autonomously moving in a predetermined cleaning area (for example, a room). The autonomously traveling vacuum cleaner C is installed in an upper case 91 that is an upper wall (and some side walls), a lower case 51 (see FIG. 2) that is a bottom wall (and some side walls), and a front part. And a bumper 92 that is configured to include a main body 50. The upper case 91 is provided with a dust collection case K (see FIG. 13) which will be described later.

(Main body 50)
FIG. 2 is a perspective view looking down from the left front with the upper case 91 removed. The lower case 51 is a casing on which the traveling motor 57, the rotary brush motor 21, the electric blower 81, the control device 95, and the like are placed, and the outer shape thereof has a thin disk shape.

  FIG. 3 is a bottom view of the autonomously traveling electric vacuum cleaner C. FIG. The lower case 51 includes two drive mechanism housing portions 54 for housing a drive mechanism including a drive wheel 61 that can be exposed downward, a traveling motor 57 (see FIG. 2), and a speed reduction mechanism, and a side The brush attachment part 82, the hole part 52 which fixes the suction part 10, the exhaust port 53, and the battery accommodating part 55 (refer FIG. 4) which accommodates the rechargeable battery B (refer FIG. 4) are formed.

  Drive mechanism accommodation portions 54 are formed on the left and right sides of the lower case 51 that has a substantially disk shape in plan view. In addition, a plurality of exhaust ports 53 are formed in the vicinity of the center of the lower case 51 that has a circular shape in plan view and is sandwiched between the drive mechanism housing portions 54. A battery housing part 55 is formed in front of the center of the lower case 51. Side brush attachment portions 82 for attaching the side brush 40 are formed on the left and right sides of the battery housing portion 55. A hole 52 to which the suction part 10 is fixed is formed on the rear side from the center of the lower case 51, that is, on the rear side of the exhaust port 53 and the drive mechanism housing part 54.

  The suction portion 10 fixed to the hole portion 52 is formed with a suction port 17 (see FIG. 2), and in order from the rear side, the scraping brush 1 for scraping off cotton dust adhered to the carpet, a groove in the flooring, and the like. It is a member that accommodates a plurality of raised cloth roller bodies 100 in the left-right direction that freely rolls on the surface to be cleaned, and the rotating brush 5 that scrapes dust from the surface.

  4 is a side cross-sectional view taken along line AA in FIG. The bumper 92 is installed so as to be movable in the front-rear direction according to the pressing force acting from the outside. The bumper 92 is urged forward by a pair of left and right bumper springs (not shown). The tip of the bumper spring is curved in a J shape, and this curved portion is in contact with the inner wall surface of the bumper 92. When a drag force from an obstacle acts on the bumper spring via the bumper 92, the bumper spring is deformed, and the bumper 92 is allowed to move backward while urging the bumper 92 forward. When the bumper 92 moves away from the obstacle and loses the above-described drag, the bumper 92 returns to its original position by the biasing force of the bumper spring. Incidentally, the backward movement of the bumper 92 (that is, contact with an obstacle) is detected by sensors 96 (infrared sensors) described later, and the detection result is input to the control device 95 (see FIG. 14).

(Drive wheel 61)
As shown in FIG. 3, the drive wheel 61 is a wheel that can move the main body 50 forward, backward, and turn by rotation of the drive wheel 61 itself. The drive wheels 61 are arranged on both the left and right sides.

  The support mechanism housed in the drive mechanism housing portion 54 shown in FIG. 3 is a mechanism that supports the drive wheel 61 on the main body 50. The support mechanism includes an arm 71 that supports the drive wheel 61.

(Battery housing 55)
As shown in FIG. 4, the battery accommodating portion 55 is a space for accommodating the rechargeable battery B inside the lower case 51, and has a downward opening surrounded by a wall surface. As shown in FIG. 3, the front lid 56 is a substantially rectangular plate-like member that closes the opening of the battery housing portion 55 (see FIG. 4) formed in the lower case 51 from the lower surface of the lower case 51. The front lid 56 includes a locking claw 56a in the vicinity of the center of the front portion, and includes an overhang portion 56b having screw holes on both the left and right sides of the rear portion. The front lid 56 is fixed to the lower case 51 from below by a locking claw 56a and a screw inserted through the screw hole. Further, the front lid 56 includes a circular auxiliary wheel attachment portion 84 for attaching the auxiliary wheel 83 near the center side of the lower case 51. Further, the front lid 56 includes a groove portion for fixing the guide brush (L) 45 at a position on a line connecting the rotation axis of the side brush 40 and the substantially center position of the lower case 51 in a state of being attached to the lower case 51. A guide brush (L) 45 (brush member) is provided in the groove.

(Auxiliary wheel 83)
As shown in FIG. 3, the auxiliary wheel 83 is an auxiliary wheel for smoothly moving the autonomous traveling vacuum cleaner C while keeping the main body 50 at a predetermined height from the floor surface. The auxiliary wheel 83 is pivotally supported so as to be driven and rotated by a frictional force generated between the auxiliary wheel 83 and the floor surface as the main body 50 moves. Further, the auxiliary wheel 83 is configured such that the direction can be rotated 360 ° in the horizontal direction. The auxiliary wheel 83 shown in FIG. 3 is provided at the center in the left-right direction in front of the main body 50 and attached to the auxiliary wheel attachment portion 84.

(Suction part 10)
As shown in FIG. 4, a rotating brush accommodating portion 15 that accommodates the rotating brush 5 is formed in the front portion of the suction portion 10. A raised cloth roller body accommodating portion 101 for accommodating the raised cloth roller body 100 is formed at the front portion of the rotating brush accommodating portion 15. A scraping brush accommodating portion 11 that accommodates the scraping brush 1 is formed at the rear portion of the rotating brush accommodating portion 15. A rotating brush 5 (see FIG. 3) is disposed in the rotating brush housing portion 15. A raised cloth roller body 100 is disposed in the raised cloth roller body housing portion 101. That is, the raised cloth roller body 100, the rotating brush 5, and the scraping brush 1 are arranged in this order from the front portion of the autonomous traveling type vacuum cleaner C.

  Moreover, the rotating brush 5, the raised cloth roller body 100, and the scraping brush 1 are each rotatably attached. The rotating brush 5, the raised cloth roller body 100, and the scraping brush 1 are detachably attached to the suction unit 10.

  As shown in FIG. 2, a rotary brush motor 21 that rotates the rotary brush 5 and a power transmission mechanism 22 that transmits the power of the rotary brush motor 21 are provided on the upper surface side of the suction portion 10 (see FIG. 3). . The rotation direction of the rotating brush 5 is referred to as a first rotation direction. The rotating brush 5 that rotates in the first rotation direction rotates from the front side toward the rear side in contact with the floor surface.

  The rotary brush motor 21 is attached to one end side of the suction portion 10 in the left-right direction. The rotating brush motor 21 has a rotating shaft arranged in parallel with a rotating shaft (not shown) of the rotating brush 5. A rotating shaft (not shown) of the rotating brush motor 21 extends toward one end side in the left-right direction, and is connected to the rotating shaft 5 b of the rotating brush 5 through the power transmission mechanism 22 at one end of the suction portion 10. Yes.

(Rotating brush housing 15)
The shape of the rotating brush accommodating part 15 is demonstrated. As shown in FIG. 4, the rotary brush accommodating portion 15 is a concave portion having a curved surface with an arcuate cross section. As shown in FIG. 4, a suction port 17 is formed on the curved surface on the rear side of the rotary brush housing portion 15. The suction port 17 communicates with the opening of the dust collecting case K (see FIG. 4).

(Scraping brush housing part 11)
The shape of the scraping brush accommodating part 11 is demonstrated. As shown in FIG. 4, the scraping brush accommodating portion 11 is a concave portion having a curved surface with an arcuate cross section. By providing the curved surface of the scraping brush accommodating portion 11 so as to approach the scraping brush 1 (flocking), airtightness of the suction portion 10 can be ensured. For this reason, the performance which takes the garbage of self-propelled electric vacuum cleaner C can be improved.

(Raised cloth roller body accommodating portion 101)
The shape of the raised cloth roller body accommodating portion 101 will be described. As shown in FIG. 4, the scraping brush accommodating portion 101 is a concave portion having a curved surface with an arcuate cross section. By providing the curved surface of the raised cloth roller body accommodating portion 101 so as to approach the raised cloth roller body 100 (flocking), the airtightness of the suction portion 10 can be ensured. For this reason, the performance which takes the garbage of the autonomous traveling type vacuum cleaner C can be improved.

(Rotating brush 5)
The rotary brush 5 is a substantially cylindrical brush having a rotation axis (not shown) in the horizontal direction, and is arranged substantially in parallel with an axis (left-right direction) passing through the rotation center of the drive wheel 61 in this embodiment ( (See FIG. 3). The rotating brush 5 is provided continuously from one end side to the other end side in the longitudinal direction (left-right direction) of the rotating brush housing portion 15. The rotary brush 5 is rotatably supported by the suction part 10 and is driven to rotate in the first rotational direction by a rotary brush motor 21 (see FIG. 2). The rotating brush 5 rotates in the same direction as the drive wheel 61 rotates when the main body 50 moves forward. In the present embodiment, even if the rotation direction of the drive wheel 61 changes (reverses) during reverse travel, the rotation direction of the rotary brush 5 can be maintained in the first rotation direction. Moreover, the rotating brush 5 is provided with the hair transplant 5c which protrudes in a normal line direction from the outer peripheral surface of a shaft part (not shown). Here, the flocks 5c of the rotating brush 5 include a plurality of types of flocks such as flocks having different lengths and flocks having different hardnesses, and each flock is arranged in a spiral with respect to the rotation shaft 5b (see FIG. 3). It may be arranged like this.

  In the present embodiment, the case where a plurality of types of flocks are disposed has been described as an example. However, the present invention is not limited to this and may be one type. Moreover, the structure which arrange | positions the braid | blade member which consists of elastic materials, such as rubber | gum, between the flocks arrange | positioned helically may be added, and it can change suitably.

(Scraping brush 1)
The scraping brush 1 is a brush having a rotation axis in the horizontal direction, and in this embodiment is disposed behind the rotation brush 5 along an axis (left-right direction) passing through the rotation center of the drive wheel 61 (see FIG. 3). The scraping brush 1 is provided continuously from one end side to the other end side in the longitudinal direction (left-right direction) of the scraping brush accommodating portion 11. The scraping brush 1 has a substantially cylindrical shape having a rotation shaft 4 and is rotatably supported by the suction portion 10. In addition, the scraping brush 1 is provided with flocking on part or the entire surface of the shaft portion.

  Here, the flocking of the scraping brush 1 is preferably longer from the viewpoint of improving the scraping force, and similarly, it is preferably hard. If the flocking of the scraping brush 1 is long, the flocking reaches the back of the carpet, etc., and dust can be scraped from the back. This is because dust can be scraped from the back against this.

  On the other hand, the flocking of the scraping brush 1 is preferably soft from the viewpoint of reducing power consumption. This is because when the flocking of the scraping brush 1 is soft, the contact resistance of carpet hair and the like is reduced, and the scraping brush 1 is easily rotated, so that the power consumption of the travel motor and the rotating brush motor 21 is reduced.

  The rear end of the rotating brush 5 and the front end of the scraping brush 1 are close to each other. For example, the flocking hair 5c of the rotating brush can be arranged so as to be in contact with the flocking of the scraping brush 1. In the present embodiment, the scraping brush 1 and the rotating brush 5 are installed so that the roots of the flocks or the vicinity of the roots are in contact with each other. From this, the rotating brush 5 can give its 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 in the direction opposite to the rotating brush 5 (second rotating direction).

  Here, when the main body 50 moves forward with the scraping brush 1 in contact with the cleaning surface, the scraping brush 1 rotates in the first rotational direction to cancel the rotational force applied by the rotating brush 5 by friction with the cleaning surface. Since the force is applied, the scraping brush 1 does not always rotate in the second rotation direction.

  In the present embodiment, when the main body 50 moves forward, the scraping brush 1 is designed so that the rotational force from the cleaning surface is greater than the rotational force from the rotating brush 5 and is driven to rotate in the first rotational direction. It is. At this time, flooring, carpets, tatami mats, and the like can be assumed as the cleaning surface. At this time, since the rotational force from the rotary brush 5 in the second rotational direction is applied, the rotational speed of the scraping brush 1 and the forward speed of the main body 50 are different, and resistance to the cleaning surface is generated. become. For this reason, the scraping brush 1 can collect | recover so that dust may be scraped off from a floor surface. The flock 2 is provided over the entire circumference of the scraping brush 1 in the circumferential direction.

(Raised cloth roller body 100)
The raised cloth roller body 100 is a substantially cylindrical member having a rotation axis in the horizontal direction, and in this embodiment, is arranged substantially in parallel with an axis (left-right direction) passing through the rotation center of the drive wheel 61 (see FIG. 3). The raised cloth roller body 100 is continuously provided from one end side to the other end side in the longitudinal direction (left and right direction) of the raised cloth roller body housing portion 101. The raised cloth roller body 100 is rotatably supported by the suction portion 10. The raised cloth roller body 100 is located in front of the rotating brush 5. In the present embodiment, the directions of the rotation axes of the scraping brush 1 and the raised cloth roller body 100 are substantially parallel to the axial direction of the rotation brush 5. Further, the rear end of the brushed fabric roller body 100 is located in the vicinity of the front end of the rotating brush 5. The length of the brushed roller body 100 in the rotation axis direction (longitudinal direction) is substantially equal to the length in the left-right direction of the rotating brush housing 15 (see FIG. 5). Thereby, the airtightness of the rotating brush accommodating part 15 can be hold | maintained.

  Further, the diameter of the brushed fabric roller body 100 is preferably small from the viewpoint of miniaturization of the main body 50, but is larger in order to suck large dust. Therefore, assuming that the maximum diameter of household waste that should be sucked into the self-propelled vacuum cleaner is about 5 mm (assuming rice grains, etc.), the brush height of the raised cloth 103 should be about 5 mm. The diameter of the blanket roller body 100 is about 20 mm. Since the diameter of the rotating brush 5 can be about 40 mm, for example, the brushed fabric roller body 100 is configured with a diameter that is approximately ½ of the diameter of the rotating brush 5. That is, it can be reduced to about ½ or less from the viewpoint of miniaturization, and can be made more than about ½ from the viewpoint of dust collection efficiency.

  As in the present embodiment, by adopting the flocking 5c to the rotating brush 5, while securing the dust scraping force, by adopting a raised cloth for the rotating body, the negative pressure in the gap with the rotating brush 5 Can be increased. Further, as described later, by adopting a soft material such as a raised cloth for the rotating body, it is possible to reduce the risk of damaging the step when overcoming the step.

  In a state where the autonomously traveling electric vacuum cleaner C is placed on the cleaning surface, the suction unit 10 contacts the cleaning surface together with the drive wheels 61 and the auxiliary wheels 83. Since the main body 50 is held at a predetermined height from the floor surface by the drive wheel 61 and the auxiliary wheel 83, the ground contact area between the flocking of the rotating brush 5 and the cleaning surface is not excessively widened. Thereby, the increase of the load of the rotary brush motor 21 is prevented.

(Side brush 40)
The side brush 40 shown in FIG. 3 is a brush having a rotation axis in a substantially vertical direction. By rotating the side brush 40 itself, dust in a place where it is not easy to reach the rotating brush 5 such as a corner of the room outside the main body 50 is guided to the suction portion 10 (suction port 17). Can do. A part of the side brush 40 is exposed from the main body 50 in plan view. The side brush 40 includes three bundles of brushes extending radially at 120 ° intervals in a plan view, and is disposed on the left and right in front of the suction portion 10. The base of the right side brush 40 is fixed to the side brush holder 41. The flocking of the side brush 40 is inclined so as to approach the floor surface toward the tip, and the vicinity of the tip is in contact with the floor surface.

  The side brush holder 41 is installed near the bottom surface of the lower case 51 and is connected to the side brush motor 42 (see FIG. 2). When the side brush motor 42 is driven, the side brush 40 rotates inward (in the direction of the arrow attached to FIG. 3), and dust is collected between the left and right guide brushes 45. The same applies to the left side brush 40.

(First guide brush)
The first guide brush 45 shown in FIG. 3 is a flocking fixed to the groove portion of the front lid 56. The rotating shaft of the side brush 40 and the hypotenuse of the arm (suspension arm) 71 (near the front end of the guide brush 47) are arranged at positions. The first guide brush 45 is a brush that guides dust collected by the side brush 40 between the left and right second guide brushes 47 and guides it to the suction unit 10. The first guide brush 45 preferably has a length that contacts the object to be cleaned (floor surface, carpet) during use. Thereby, it is possible to prevent dust from escaping from between the first guide brushes 45. The material and length of the flocking of the first guide brush 45 are not limited to these, and can be selected as appropriate.

  The second guide brush 47 shown in FIG. 3 is a flocking fixed to a groove portion of an arm (suspension arm) 71. The second guide brush 47 is arranged on the inner side of the extension line of the side wall of the rotating brush accommodating portion 15 and in a direction substantially parallel to the drive wheel 61. The arm (suspension arm) 71 is a member in which a rotation shaft along the front-rear direction is located on the inner side in the left-right direction with respect to the drive wheel 61 and can rotate the drive wheel 61 in the up-down direction.

  The second guide brush 47 is a brush that guides dust collected by the side brush 40 to the suction unit 10 via the first guide brush 45. The second guide brush 47 preferably has a length that always contacts the cleaning target even when the arm 71 moves up and down during use. The material and length of the flocking of the second guide brush 47 are not limited to these, and can be selected as appropriate.

(Electric blower 81)
The electric blower 81 shown in FIG. 4 rotates to discharge the air in the dust collecting case K to the outside to generate negative pressure, and sucks dust from the floor through the suction port 17 (suction unit 10). It has a function. An elastic body 80 is installed on the outer peripheral surface of the electric blower 81. By interposing the elastic body in this way, the vibration of the electric blower 81 is attenuated and hardly transmitted to the main body 50, and the vibration and noise of the main body 50 can be reduced. As illustrated in FIG. 2, the electric blower 81 is disposed near the center of the lower case 51 in this embodiment.

(Operation buttons 97)
The operation button 97 is a button for outputting an operation signal in accordance with a user operation to the control device 95 (see FIG. 1). For example, a power button, a cleaning start / end button, and a cleaning mode are changed. And a cleaning mode selection button.

  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) has a plurality of LEDs (Light Emitting Diodes) and a 7-segment display (not shown), and displays the operating state of the self-propelled electric vacuum cleaner C.

(Control device 95)
The control device 95 is, for example, a microcomputer (not shown), reads a program stored in a ROM (Read Only Memory) and develops it in a RAM (Random Access Memory), and a CPU (Central Processing Unit) performs various processes. It is supposed to run. The control device 95 performs arithmetic processing according to signals input from the operation buttons 97 (see FIG. 1) and sensors, and outputs command signals to the above-described driving devices.

(Dust collection case K)
The dust collection case K is a container that collects dust sucked from the floor via the suction port 17 (suction unit 10). The dust collection case K includes a main body K1 for storing the collected dust and a foldable handle K2. The dust collection case main body has a shape configured such that the lower surface corresponds to the shape of the upper portion of the suction portion 10, and the inlet K <b> 3 having a shape corresponding to the suction port 17 is located at a position facing the suction port 17 (FIG. 4). And a substantially rectangular parallelepiped shape as a whole.

(Body dimensions)
Next, the width and height of the autonomous traveling vacuum cleaner of this embodiment will be described with reference to FIGS. FIG. 5 is a diagram for explaining a relationship between statistical data of a leg-to-leg dimension of a chair which is an example of furniture and a width dimension of the autonomous traveling vacuum cleaner according to the embodiment. Drawing 6 is a figure explaining the relation between the statistical data of the height dimension of the leg of the bed which is an example of furniture, and the height dimension of the autonomous running type vacuum cleaner concerning an embodiment. FIG. 7 is a diagram for explaining the width dimension and the height dimension of the autonomous traveling vacuum cleaner according to the embodiment.

  First, with reference to FIG. 5, the width | variety of the autonomous traveling type vacuum cleaner is specified from the dimension of a general furniture. FIG. 5 shows the statistics of the distance between the legs of the chair as an example of general furniture. The horizontal axis is the distance between the legs of the chair, where the distance between the left and right legs of the chair is “a: leg distance front” and the distance between the front and rear legs of the chair is “b: leg distance side surface”.

  The vertical axis indicates the ratio (dimension cover ratio) in which the chair to be investigated is included in the distance between the chair legs shown on the horizontal axis. That is, it indicates how many chairs have a distance between legs that is equal to or greater than the value of the distance between legs shown on the horizontal axis. The number of chairs that the inventors investigated was about 150.

  According to the investigation by the inventors, as shown in FIG. 5, when the distance between the legs is 350 mm, the dimension coverage ratio is a little over 80% and b is a little less than 80%. As it goes to the right side of the figure, the distance between the legs becomes narrower and the dimensional coverage of the vertical axis becomes higher. As a result, when the distance between the legs is 260 mm, it is specified that the dimensional coverage is 100%. That is, the distance between the legs of the chair of 260 mm is specified as the distance between the legs of a general chair is equal to or larger than this value.

  Based on this result, the autonomous traveling vacuum cleaner of this embodiment specifies the width dimension to be approximately 260 mm or 260 mm or less. Thereby, the autonomous traveling type vacuum cleaner of this embodiment can pass between the legs of a general chair, and can improve the cleanability around the chair. Moreover, since the movement range which makes a chair an obstacle is hard to be restricted, the range which can be cleaned can be expanded.

  In addition, although the chair was demonstrated as an example of furniture in FIG. 5, it is because it is thought that it has the narrowest space | interval between the legs of a chair in general household furniture. Therefore, the autonomously traveling electric vacuum cleaner of this embodiment allows the width dimension to be approximately 260 mm or 260 mm or less, so that not only the chair but also furniture with legs such as a table can pass between the legs. It becomes possible, and the range which can be cleaned can be expanded.

  Next, with reference to FIG. 6, the height of the autonomous traveling vacuum cleaner is specified from the dimensions of general furniture. In FIG. 6, statistics of bed leg height are shown as an example of general furniture. The horizontal axis indicates the dimensions of the leg height of the bed.

  The vertical axis indicates the ratio (dimension cover ratio) in which the bed to be investigated is included in the leg height of the bed shown on the horizontal axis. That is, it shows how many leg beds are higher than the leg height value shown on the horizontal axis. In addition, about 210 beds were investigated by the inventors.

  According to the inventors' investigation, as shown in FIG. 6, the leg height increases as it moves to the right, and the dimensional coverage of the vertical axis decreases. As a result, when the leg height is 10 cm, it is specified that the dimensional coverage is about 80%. That is, it is specified that the leg height of the bed is 10 cm, and the leg height of the general bed is equal to or smaller than this value.

  Based on this result, the autonomous traveling vacuum cleaner of this embodiment specifies the height dimension to be approximately 100 mm or 100 mm or less. Thereby, it becomes possible to pass under a general bed, and the cleaning property around the bed can be improved. Moreover, since the movement range with the bed as an obstacle is not easily restricted, the cleanable range can be expanded.

  In addition, although the bed was demonstrated as an example of furniture in FIG. 6, it is because it is thought that the leg height of a bed is low in general household furniture. Therefore, the autonomously traveling electric vacuum cleaner of the present embodiment has a height dimension of about 100 mm or 100 mm or less, so that not only the bed but also furniture with legs such as a table passes under the furniture. It becomes possible, and the range which can be cleaned can be expanded.

  Next, with reference to FIG. 7, the relationship between the width | variety and height of an autonomous traveling type vacuum cleaner is demonstrated. In FIG. 7, the horizontal axis represents the width dimension of the autonomous traveling vacuum cleaner, and the vertical axis represents the height dimension. In FIG. 7, Conventional Example 1 and Conventional Example 2 plot typical dimensions of a conventional autonomously traveling vacuum cleaner.

  Conventional Example 1 has a width dimension of about 350 mm. In this case, the dimension between the legs of a general chair explained in FIG. 5 is larger than 260 mm, and it cannot pass between legs of furniture with legs including the chair. Therefore, the cleaning range is limited by legged furniture.

  Conventional Example 2 has a height dimension of about 120 mm. In this case, the leg height dimension of the general bed described with reference to FIG. 6 is larger than 100 mm, and it cannot pass under the legged furniture including the bed. Therefore, the cleaning range is limited by legged furniture.

  Therefore, the autonomous traveling type vacuum cleaner of the present embodiment has a width dimension of approximately 260 mm or 260 mm or less and a height dimension of approximately 100 mm or 100 mm or less. As a result, it is possible to pass between legs of furniture with legs, etc., and to pass under furniture with legs, etc. it can.

  In addition, the lower limit dimension of the height and width of the autonomous traveling vacuum cleaner constitutes the autonomous traveling vacuum cleaner such as the traveling motor 57, the rotating brush motor 21, the electric blower 81, the control device 95, the battery housing 55, and the like. It is sufficient that the various parts can be accommodated in the main body 50. In the present embodiment, the height is 70 mm and the width is 230 mm.

  Next, the relationship between the embodiment and the conventional examples 1 and 2 will be described more specifically with reference to FIGS. FIG. 8 is a schematic diagram for explaining the relationship between the width dimension and the height dimension of the autonomous traveling vacuum cleaner and the furniture with legs according to the embodiment. FIG. 9 is a schematic diagram for explaining the relationship between the width dimension and the height dimension of the autonomous traveling vacuum cleaner according to Conventional Example 1 and the furniture with legs. FIG. 10: is a schematic diagram explaining the relationship between the width dimension and height dimension of the autonomous traveling type vacuum cleaner which concerns on the prior art example 2, and furniture with a leg.

  First, with reference to FIG. 8, the autonomous traveling type vacuum cleaner C which concerns on embodiment is demonstrated. FIG. 8A is a side view, and FIG. 8B is a plan view. In FIG. 8, X is a piece of furniture with legs (as an example, a bed), X1 is a leg of the legged piece of furniture X (height 100 mm), Y is a floor of the cleaning area, W1 is a first wall of the cleaning area, and W2 is a first wall. This is a second wall adjacent to the wall W1 so as to form an angle of approximately 90 degrees.

  As described in FIG. 7, the autonomously traveling electric vacuum cleaner C of the present embodiment has a width dimension (L in FIG. 8) of approximately 260 mm or 260 mm or less, and a height dimension (H in FIG. 8) of approximately 100 mm. Or 100 mm or less. Thus, as shown in FIG. 8, in the layout in which the legged furniture X is arranged close to the first wall W1 and the second wall W2 at a predetermined distance, the legged furniture X passes under the legged furniture X, The autonomously traveling vacuum cleaner C can reach the corner formed by the first wall W1 and the second wall W2.

  On the other hand, in Conventional Example 1 shown in FIG. 9, the width L1 of the autonomously traveling electric vacuum cleaner C1 is about 350 mm. Therefore, even if the height H1 is lower than the leg X1, the angle formed by the first wall W1 and the second wall W2 is larger than the distance from the leg X1 to the first wall W1 and the second wall W2. Cannot reach the department.

  In Conventional Example 2 shown in FIG. 10, the height H2 of the autonomously traveling electric vacuum cleaner C2 is about 120 mm. Therefore, even if the width L2 is smaller than the distance between the leg X1 and the first wall W1 and the second wall W2, the height H2 is larger than the height of the leg X1 and cannot pass under the furniture X with legs. Therefore, the corner formed by the first wall W1 and the second wall W2 cannot be reached.

  As described above, the autonomous traveling type vacuum cleaner C according to the present embodiment has the conventional example 1 and the conventional one in the layout in which the furniture X with legs is arranged close to the first wall W1 and the second wall W2 with a predetermined distance. The corner portion formed by the first wall W1 and the second wall W2 that could not be reached in Example 2 can be reached.

  Next, with reference to FIG. 11, the relationship between the width | variety of the suction part 10 and the width | variety of the main body 50 is demonstrated. FIG. 11 is a bottom view illustrating the relationship between the width of the suction portion and the width of the main body of the autonomous traveling vacuum cleaner according to the embodiment.

  In FIG. 11, the maximum width of the main body 50 is represented as L, and the width of the suction portion 10 is represented as Z. The suction portion 10 is disposed near the approximate center of the main body 50 in the left-right direction. Moreover, the edge part of the suction part 10 is located in the outer side rather than 1/4 of the width | variety L (dimension L / 4) with respect to the left-right direction from the center of the main body 50. FIG. In other words, the end of the suction portion 10 is located outside the half (L / 4) of the distance (L / 2) from the center of the main body 50 to the side end in the left-right direction. Thereby, in the autonomous traveling type vacuum cleaner of this embodiment which made the width | variety of the main body smaller than before, cleaning property can be improved by ensuring a large suction part.

  Further, the width Z of the suction portion 10 is larger than half of the width of the main body 50 (dimension L / 2). Thereby, even if it is a self-propelled electric vacuum cleaner of a compact external dimension, the suction performance of dust can be secured.

Next, the traveling speed of the autonomous traveling vacuum cleaner of this embodiment will be described. Autonomous electric vacuum cleaners can be broadly divided into straight running, wall-side running, and sneaking around obstacles (particularly legs such as furniture with legs). Among these, in straight traveling and near-wall traveling, as an example, 250 to 350 mm / s, and in wraparound traveling, as an example, 200 to 300 mm / s. Moreover, the rotational speed of the autonomous traveling type vacuum cleaner is 200-300 deg / s as an example. That is, the straight traveling and the wall-side traveling are set to the same traveling speed, and the wraparound traveling is prevented from dropping too much as compared with the straight traveling and the wall-side traveling. In the present embodiment, the magnitude of the speed of straight travel (running near the wall) and the speed of wraparound travel are straight travel (running near the wall) speed: wraparound travel speed = 5-7: 4-6. Thereby, it is possible to visually realize that the cleaning performance is improved by giving the user the impression of the crisp motion without giving the impression of the sneaking motion.
Furthermore, the rotation speed is also quick. Thereby, the autonomous traveling type vacuum cleaner of this embodiment is a compact external dimension, Comprising: By speedy operation | movement, it can clean over a wide range, going around furniture etc.

  The autonomous traveling type vacuum cleaner according to the present invention has been described in detail with reference to the embodiment. Needless to say, the content of the present invention is not limited to the embodiment, and can be appropriately modified and changed within a range not departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 Scraping brush 5 Rotating brush 10 Suction part 17 Suction port 50 Main body 56a Locking claw 56b Overhang part 61 Drive wheel 82 Side brush attachment part C Autonomous traveling vacuum cleaner K Dust collection case

Claims (5)

The body,
A lower suction portion of the main body, and
An autonomous traveling type vacuum cleaner characterized in that a width dimension of the main body is 260 mm or less and a height dimension is 100 mm or less.   The suction part is located near the center of the main body in the left-right direction, and the end of the suction part is located outside the half of the distance from the center of the main body to the side end in the left-right direction. The autonomously traveling electric vacuum cleaner according to claim 1, wherein:   The autonomously traveling electric vacuum cleaner according to claim 1 or 2, wherein a width of the suction part is larger than half of a maximum width of the main body.   The autonomous traveling type vacuum cleaner according to any one of claims 1 to 3, wherein a straight traveling speed is 250 to 350 mm / s and a wraparound traveling speed is 200 to 300 mm / s.   The autonomous traveling type vacuum cleaner according to any one of claims 1 to 4, wherein the rotation speed is 200 to 300 deg / s.

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