Suction port body, vacuum cleaner, and cleaning sheet attachment method for suction port body

Abstract

To provide a suction port body to which a cleaning sheet can be easily attached, a vacuum cleaner comprising the same, and a cleaning sheet attachment method for the suction port body.SOLUTION: A suction port body 1 comprises: a suction port 100; and a sheet support part 102 comprising a sheet hold part 1020 to / from which a cleaning sheet 2 can be attached / detached, and for bringing the cleaning sheet 2 into contact with a part to be cleaned. At least a portion of the sheet support part 102 is arranged adjacently behind or beside the suction port 100 in a lower part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Embodiments of the present invention relate to a suction port body to which a cleaning sheet can be attached and used, a vacuum cleaner including the same, and a method for attaching the cleaning sheet to the suction port body.

Background Art

[0002] Conventionally, in a suction port body of a vacuum cleaner, there is known one that holds a cleaning sheet such as a non-woven fabric and simultaneously performs suction cleaning and wiping cleaning on a portion to be cleaned such as a floor surface. In order to securely hold the cleaning sheet so that it does not curl or come off when wiping the portion to be cleaned, a complicated attachment operation is required, such as winding it around the main body of the suction port body and pushing its terminal portion into a sheet attachment portion composed of a plurality of tongue pieces.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a suction port body to which a cleaning sheet can be easily attached, a vacuum cleaner including the same, and a method for attaching the cleaning sheet to the suction port body.

Means for Solving the Problems

[0005] The suction port body of the embodiment has a suction port and a sheet holding portion to which the cleaning sheet is detachable, and includes a sheet support portion for bringing the cleaning sheet into contact with the portion to be cleaned. The sheet support portion is disposed such that at least a part of it is adjacent to the rear or side of the suction port at the lower part.

Brief Description of the Drawings

[0006]

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Embodiments for Carrying out the Invention

[0007] (First Embodiment) Hereinafter, the first embodiment will be described with reference to the drawings.

[0008] In FIGS. 1 to 4, reference numeral 1 denotes a suction port body. The suction port body 1 sweeps a portion to be cleaned F which is a surface to be cleaned such as a floor. In the present embodiment, a separate cleaning sheet 2 can be attached to the suction port body 1. With the cleaning sheet 2 attached, the user moves the suction port body 1 on the portion to be cleaned F, so that suction cleaning and wiping cleaning can be simultaneously performed. That is, the suction port body 1 is a cleaning attachment capable of performing suction cleaning and wiping cleaning. Hereinafter, based on the state where the suction port body 1 is placed and used on a horizontal portion to be cleaned F, the vertically upward and downward direction is defined as the vertical direction, the direction away from the user is defined as the front direction, the direction approaching the user is defined as the rear direction, and the left and right directions are defined when viewed from the front. In the drawings, the arrow FR direction is the front direction, the arrow RR direction is the rear direction, the arrow U direction is the upward direction, the arrow D direction is the downward direction, the arrow L direction is the left direction, and the arrow R direction is the right direction.

[0009] The suction port body 1 has a main body portion 10 and a connecting pipe 11. The main body portion 10 is elongated in the left and right directions which are both side directions. That is, the main body portion 10 has a horizontally long shape.

[0010] The main body portion 10 has a suction port 100 for suction cleaning. The suction port 100 is located at the front portion of the main body portion 10. In the illustrated example, the suction port 100 is located at at least the front end portion or the foremost portion of the main body portion 10. That is, the suction port 100 is located at at least the front surface of the main body portion 10. In the present embodiment, the suction port 100 is open from the front end portion to the lower portion of the main body portion 10. In the illustrated example, the suction port 100 is open from the front surface to the lower surface of the main body portion 10. The suction port 100 is elongated along the longitudinal direction of the main body portion 10. That is, the suction port 100 is elongated in the left - right direction. Further, the left - right dimension of the suction port 100 is set to be considerably larger than the front - rear dimension. That is, the suction port 100 has an elongated horizontally - long shape. The suction port 100 extends continuously between the left and right side portions of the main body portion 10. The left side portion of the suction port 100 is located at the left side portion of the lower portion of the main body portion 10, and the right side portion of the suction port 100 is located at the right side portion of the lower portion of the main body portion 10. In the present embodiment, the suction port 100 is located corresponding to substantially the entire width of the main body portion 10. That is, the left - right dimension of the suction port 100 is set to be substantially equal to the left - right dimension of the main body portion 10. Hereinafter, "substantially" shall include the meanings of "completely" and "substantially".

[0011] The suction port 100 communicates with an air passage portion 101. The air passage portion 101 is formed inside the main body portion 10 above the suction port 100. The air passage portion 101 communicates the suction port 100 with a front end portion which is an upstream end portion of a connection pipe 11 located behind it. In the present embodiment, the air passage portion 101 has a general air passage portion 1010 that extends continuously over the entire longitudinal direction of the suction port 100, and a connection air passage portion 1011 that connects the suction port 100 and the connection pipe 11. The connection air passage portion 1011 extends continuously from the center portion in the left - right direction of the general air passage portion 1010, and extends upward and rearward from the general air passage portion 1010.

[0012] The air passage portion 101 is formed in a non-bent shape that slopes upward to the rear on the downstream side from the front end portion of the suction port 100 in the left-right direction, that is, the entire width direction of the general air passage portion 1010 that extends across the suction port 100. In particular, in the connection air passage portion 1011 at the central portion in the left-right direction, which is the position facing the front end portion of the connection pipe 11, it is formed in a non-bent shape so as to slope upward to the rear from the front end portion of the suction port 100 toward the front end portion of the connection pipe 11. The "non-bent shape" includes a straight shape or a gentle curved shape formed without a portion that bends at an angle of 90 degrees or less. In the present embodiment, the air passage portion 101 is in a straight line from the front end portion of the suction port 100 toward the front end portion of the connection pipe 11.

[0013] The air passage portion 101 is a chamber portion or a duct portion surrounded by a guide surface 1012 forming the lower rear side, a partition surface 1013 forming the upper front side, a ceiling surface 1014 forming the upper portion, and side surfaces 1015 forming both side portions, and is opened by the suction port 100 from the lower front side to the lower portion.

[0014] The guide surface 1012 has its lower portion forming the rear end portion of the suction port 100 and rises in an inclined manner toward the upper rear side. The guide surface 1012 is substantially flat without unevenness and guides the dust sucked in from the suction port 100 to the connection pipe 11. The guide surface 1012 extends longitudinally in the left-right direction in the general air passage portion 1010 and extends so as to protrude upward with respect to other portions in the connection air passage portion 1011. Preferably, the guide surface 1012 is formed in a flat shape or a curved shape. For example, the inclination angle of the guide surface 1012 with respect to the horizontal plane or the inclination angle of the tangent plane of the guide surface 1012 is set to 45° or less.

[0015] The sectional screen 1013 has its lower part forming the front end of the suction port 100, is located above and separated from the guide surface 1012, and faces the guide surface 1012 in the vertical and front - rear directions. The sectional screen 1013, like the guide surface 1012, is formed in an inclined shape towards the upper - rear side. The sectional screen 1013 is in a planar shape with substantially no concavities or convexities. The sectional screen 1013 extends longitudinally in the left - right direction in the general air duct portion 1010 and extends upward so as to protrude with respect to other portions in the connecting air duct portion 1011. Preferably, the sectional screen 1013 is formed in a planar or curved surface shape. In the present embodiment, the sectional screen 1013 has a larger inclination angle than the guide surface 1012 with respect to the horizontal direction. Therefore, the air duct portion 101 is formed so as to gradually widen in the front - rear direction from the suction port 100 towards the downstream side.

[0016] The ceiling surface 1014 is located above and behind the suction port 100. The ceiling surface 1014 is continuous with the upper part of the sectional screen 1013. The ceiling surface 1014 extends horizontally in the left - right direction in the general air duct portion 1010 and is curved so as to protrude upward along the shape of the sectional screen 1013 in the connecting air duct portion 1011.

[0017] The side surface 1015 is a surface that is continuous with both side portions of the sectional screen 1013 and the ceiling surface 1014 and extends in the vertical and front - rear directions. The side surface 1015 forms both side portions of the general air duct portion 1010 and both side portions of the suction port 100. In the present embodiment, the side surface 1015 extends below the sectional screen 1013.

[0018] In addition, the main body 10 has a sheet support portion 102 for wiping and cleaning. The sheet support portion 102 is a portion for bringing the cleaning sheet 2 into contact with the portion to be cleaned F by the self-weight of the suction port body 1 or the main body 10, or by the pressure applied from above by the user, and preferably, it is a portion for pressing and adhering the cleaning sheet 2 to the portion to be cleaned F. That is, the sheet support portion 102 is a portion for sandwiching the cleaning sheet 2 between it and the portion to be cleaned F. The sheet support portion 102 is located behind the suction port 100, and in this embodiment, it is located near the rear end portion of the suction port 100 at the lower part of the main body 10. In the illustrated example, the sheet support portion 102 is close to the rear end portion of the suction port 100 along the longitudinal direction of the suction port 100 at the lower part of the main body 10. In this embodiment, the sheet support portion 102 is adjacent to the rear end portion of the suction port 100. Hereinafter, "adjacent" shall include not only the state of being adjacent without a gap but also the state of being adjacent with a slight gap.

[0019] At least a part of the sheet support portion 102 forms the entire portion extending across the rear end portion of the main body 10 behind the suction port 100 at the lower part of the main body 10. For example, the front end portion of the sheet support portion 102 extends substantially across the entire width and faces the suction port 100. The sheet support portion 102 and the suction port 100 have substantially equal left and right dimensions, and the central portions in the left and right directions substantially coincide.

[0020] In this embodiment, the sheet support portion 102 has a sheet holding portion 1020 for detachable attachment of the cleaning sheet 2. The sheet holding portion 1020 is preferably a member that can hold the cleaning sheet 2 lightly to the extent that the cleaning sheet 2 can be easily removed. For example, the sheet holding portion 1020 is a member that can adhere and hold the cleaning sheet 2, and a hook member of a surface fastener that holds the cleaning sheet 2 by hooking the fibers constituting the cleaning sheet 2 is preferably used. However, it is not limited to this, and as the sheet holding portion 1020, a hook member made of synthetic resin or the like integrally formed with the main body 10 may be used, or a reusable adhesive member, such as an adhesive pad, may be used.

[0021] The sheet holding part 1020 is at least partially disposed behind or on the side of the suction port 100 at the lower part and / or the upper part of the main body part 10. In this embodiment, the sheet holding part 1020 is disposed behind the suction port 100. In the illustrated example, a plurality of sheet holding parts 1020 are set in the front-rear direction. For example, the sheet holding part 1020 includes a front sheet holding part 10200 and a rear sheet holding part 10201.

[0022] In this embodiment, the front sheet holding part 10200 is along the longitudinal direction of the suction port 100 and is close to the rear part of the suction port 100. A plurality of front sheet holding parts 10200 are set on the left and right, and each is adjacent to the rear end part of the suction port 100. For example, a pair of front sheet holding parts 10200 are set on the left and right and are spaced apart from each other in the left-right direction. In the illustrated example, the left side part of the left front sheet holding part 10200 is located at the left side part of the lower part of the main body part 10 and is arranged in the front-rear direction with the left side part of the suction port 100, and the right side part of the front sheet holding part 10200 located at the right side part of the lower part of the right main body part 10 is arranged in the front-rear direction with the right side part of the suction port 100. Also, each front sheet holding part 10200 is strip-shaped with a longitudinal shape in the left-right direction and a substantially constant width, and is arranged substantially parallel to the suction port 100. Not limited to this, each front sheet holding part 10200 may be divided into a plurality in the front-rear and / or left-right directions.

[0023] The rear sheet holding part 10201 is located at a distance from the front sheet holding part 10200 in the front-rear direction. For example, the rear sheet holding part 10201 is arranged along the rear end part of the lower part of the main body part 10. The rear sheet holding part 10201 is strip-shaped with a longitudinal shape in the left-right direction and a substantially constant width, and is arranged continuously in the left-right direction across from the left side part to the right side part of the main body part 10. That is, the left side part of the rear sheet holding part 10201 is located at the left side part of the lower part of the main body part 10, and the right side part of the rear sheet holding part 10201 is located at the right side part of the lower part of the main body part 10. Not limited to this, the rear sheet holding part 10201 may be divided into a plurality in the front-rear and / or left-right directions.

[0024] In the present embodiment, the sheet holding portion 1020 is disposed in the holding portion mounting portion 103 recessed in the lower portion of the main body portion 10, and is substantially flush with the lower surface of the main body portion 10.

[0025] Further, the sheet support portion 102 has a pressing portion 1021 for making it possible to contact the portion F to be cleaned without holding the cleaning sheet 2. The pressing portion 1021 constitutes a portion other than the sheet holding portion 1020 in the sheet support portion 102. For example, the pressing portion 1021 constitutes an area wider than the sheet holding portion 1020 in the sheet support portion 102. In the present embodiment, the pressing portion 1021 substantially occupies the whole between the front sheet holding portion 10200 and the rear sheet holding portion 10201 at the lower portion of the main body portion 10. That is, the pressing portion 1021 is positioned adjacent to the rear end portion of the front sheet holding portion 10200 and the front end portion of the rear sheet holding portion 10201. The pressing portion 1021 is strip-shaped with a longitudinal shape in the left-right direction and a substantially constant width, and is positioned substantially parallel to the suction port 100 and the sheet holding portion 1020. Further, the pressing portion 1021 extends continuously between the left and right side portions of the main body portion 10. That is, the left side portion of the pressing portion 1021 is positioned at the left side portion of the lower portion of the main body portion 10, and the right side portion of the pressing portion 1021 is positioned at the right side portion of the lower portion of the main body portion 10.

[0026] For example, the pressing portion 1021 is formed in a substantially flat plate shape by a soft material such as an elastomer or urethane. Note that the pressing portion 1021 may be divided into a plurality in the front-rear and / or left-right directions. Further, the pressing portion 1021 does not have to be soft.

[0027] In the present embodiment, the pressing portion 1021 is attached to the pressing portion mounting portion 104 recessed in the lower portion of the main body portion 10, and is substantially flush with the lower portion of the main body portion 10.

[0028] Preferably, a suction hole 105 for sucking and holding the cleaning sheet 2 is opened at the lower part of the main body 10. For example, the suction hole 105 is located behind the suction port 100. In the present embodiment, the suction hole 105 is located in the sheet support portion 102. The suction hole 105 is set to be single or plural. For example, the suction holes 105 are provided between a plurality of sheet holding portions 1020. In the present embodiment, one suction hole 105 is set at the center in the left - right direction at the lower part of the main body 10. In the illustrated example, the suction hole 105 is arranged between the left and right front sheet holding portions 10200. That is, the suction hole 105 and the front sheet holding portion 10200 of the sheet holding portion 1020 are arranged side by side in the left - right direction, that is, the longitudinal direction of the suction port 100. Therefore, the suction hole 105 is located in front of the center in the front - rear direction of the main body 10. In the present embodiment, the suction hole 105 is located at a distance from the left and right front sheet holding portions 10200 in the left - right direction respectively.

[0029] The suction hole 105 communicates with a suction source 4 (shown in FIG. 7) described later. In the present embodiment, the suction hole 105 communicates with the air passage portion 101 and communicates with the suction source 4 (shown in FIG. 7) via the air passage portion 101. For example, the suction hole 105 is formed by penetrating the guide surface 1012 of the air passage portion 101. The suction hole 105 is formed in a longitudinal shape in the left - right direction. The suction hole 105 has an opening area smaller than that of the suction port 100. For example, the suction hole 105 is opened in a slit shape with left - right dimensions and front - rear dimensions smaller than those of the suction port 100.

[0030] And preferably, in the use state of the suction port body 1, as the holding force for holding the cleaning sheet 2 on the suction port body 1, the front side is set to be stronger than the rear side. In the present embodiment, the holding force on the front side is the sum of the adhesion holding force by the front sheet holding portion 10200 and the suction holding force by the suction hole 105, while the holding force on the rear side is only the adhesion holding force by the rear sheet holding portion 10201, so that the holding force on the front side is set to be stronger than the holding force on the rear side.

[0031] The main body 10 is divided into a plurality of case members. In the present embodiment, the main body 10 includes a lower case 106 which is one case member, and an upper case 107 which is another case member that covers an upper part of a part of the lower case 106. The lower case 106 and the upper case 107 may each be further divided into a plurality of members.

[0032] The lower case 106 constitutes a part of the suction port 100 and a part of the air passage portion 101. The lower case 106 is formed of, for example, a hard synthetic resin or the like. Also, the lower case 106 constitutes the majority of the lower part of the main body 10. In the present embodiment, a sheet support portion 102 is formed at the lower part of the lower case 106. In the illustrated example, the lower case 106 is formed in a longitudinal shape in the left - right direction.

[0033] A raised portion 1060 is formed at the front part of the lower case 106. The front surface of the raised portion 1060 forms the guide surface 1012 of the air passage portion 101. Due to the inclined shape of the guide surface 1012, the raised portion 1060 has a triangular shape in which the height gradually decreases toward the front side. Also, a lower case main body portion 1061 is formed at the rear part of the lower case 106. The lower case main body portion 1061 has a flat plate shape extending in the front - rear direction and the left - right direction. The side portion of the lower case main body portion 1061 forms the side portion of the rear part of the main body 10. A seat holding portion 1020 and a pressing portion 1021 are located at the lower part of the lower case 106. Further, a connection pipe support portion 1062 for supporting the connection pipe 11 is formed on the lower case 106. The connection pipe support portion 1062 is located behind the raised portion 1060 or the guide surface 1012 and is formed on the upper part of the lower case main body portion 1061. The connection pipe support portion 1062 is located at the central portion in the left - right direction. The connection pipe support portion 1062 protrudes upward in a stepped manner with respect to the lower case main body portion 1061. The lower case 106 increases in height step - by - step in the order of the lower case main body portion 1061, the connection pipe support portion 1062, and the raised portion 1060.

[0034] The upper case 107 constitutes the remaining other part of the suction port 100 and the remaining other part of the air passage part 101. The upper case 107 is formed of, for example, a hard synthetic resin or the like. The upper case 107 is fixed to the upper part of the lower case 106 by covering the upper part of the front part of the lower case 106, in this embodiment, above the raised part 1060 and the connection pipe support part 1062. In this embodiment, the upper case 107 is formed to be longitudinally long in the left - right direction.

[0035] The upper case 107 has a front surface part 1070, an upper surface part 1071, side surface parts 1072, and a rear surface part 1073. The front surface part 1070 has a back surface, that is, a rear surface that forms the partition surface 1012 of the air passage part 101. The front surface part 1070 is formed to be longitudinally long in the left - right direction, and the central part in the left - right direction extends upward. The front surface part 1070 has a convex - character shape when viewed from the front. The lower part of the front surface part 1070 is located above the lower part of the lower case 106.

[0036] The upper surface part 1071 has a back surface, that is, a lower surface that forms the ceiling surface 1014 of the air passage part 101. The upper surface part 1071 is continuous with the upper part of the front surface part 1070 and is formed to be longitudinally long in the left - right direction. Also, the central part in the left - right direction of the upper surface part 1071 is curved so as to protrude upward according to the shape of the front surface part 1070, extends rearward from the rear surface part 1073, and becomes a connection pipe support part 10710 that faces above the connection pipe support part 1062 of the lower case 106. The connection pipe support part 10710 is curved in an arc shape.

[0037] The side surface parts 1072 form the side parts of the front part of the main body part 10, and their back surfaces, that is, their inner surfaces, form the side surfaces 1015 of the air passage part 101. The side surface parts 1072 are continuous with both side parts of the front surface part 1070 and the upper surface part 1071 and extend in the front - rear direction and the up - down direction. In this embodiment, the lower part of the side surface part 1072 extends below the lower part of the front surface part 1070 and is substantially flush with the lower part of the lower case 106. The side surface parts 1072, 1072 and the lower part of the front surface part 1070 demarcate both side parts and the front end part of the suction port 100. Each side surface part 1072 is formed in a thin - plate shape so that the left - right dimension or width of the suction port 100 substantially coincides with the left - right dimension or width of the main body part 10.

[0038] The rear portion 1073 is continuous with a portion excluding the central portion in the left - right direction at the rear of the upper surface portion 1071. The rear portion 1073 is formed to be longitudinally long in the left - right direction and extends in the vertical and left - right directions. The rear portion 1073 is overlapped in the front - rear direction with the rear portion of the raised portion 1060 of the lower case 106.

[0039] Then, the upper case 107 is fixed to the lower case 106 via the case attachment portion 1074. The case attachment portion 1074 is formed, for example, in a cylindrical or boss shape having an axis in the vertical direction and is continuous with both side portions of the connection pipe support portion 10710. A fixing member such as a screw is inserted into the case attachment portion 1074 from above and fixed to the upper portion of the lower case main body portion 1061 of the lower case 106, so that the upper case 107 and the lower case 106 are fixed to each other, and the front end portion of the connection pipe 11 is rotatably clamped between the connection pipe support portions 10710 and 1062.

[0040] The connection pipe 11 is a connecting portion that communicates the suction port 100 and the suction hole 105 with a suction source 4 (shown in FIG. 7) to be described later via the air passage portion 101. Preferably, the connection pipe 11 is rotatably connected to the main body portion 10. In the present embodiment, the connection pipe 11 has a plurality of shaft portions whose rotation axis directions intersect each other, and the angle with respect to the main body portion 10 can be changed in any direction. In the illustrated example, the connection pipe 11 is configured by connecting a first pipe portion 110, which is an upstream - side pipe portion rotatable about an axis, and a second pipe portion 111, which is a downstream - side pipe portion having a rotation axis in a direction orthogonal to the rotation axis of the first pipe portion 110.

[0041] The cleaning sheet 2 is a soft sheet, such as a square sheet formed of non-woven fabric or cloth, etc. It may be a dedicated one or a general-purpose commercially available product, etc. The cleaning sheet 2 preferably has a size or area that at least covers the sheet support portion 102 of the suction port body 1. For example, the cleaning sheet 2 is formed in a square shape having a left-right dimension equal to or greater than the left-right dimension of the sheet support portion 102 and a front-back dimension equal to or greater than the front-back dimension of the sheet support portion 102. The cleaning sheet 2 may be used in a state where it is appropriately folded or in a state where it is folded multiple times according to the size of the sheet support portion 102, or it may be used as a single sheet without being folded. The cleaning sheet 2 may be a dry type or a wet type in which a cleaning liquid for the portion to be cleaned F, such as water or a chemical solution, has penetrated.

[0042] And, as shown in FIG. 7, the suction port body 1 is used in the vacuum cleaner CL. In the present embodiment, the suction port body 1 is applied to a suction-type vacuum cleaner CL that sucks dust together with air into the separation unit 5 by the negative pressure generated by the drive of a suction source 4 such as an electric blower disposed in the cleaner body 3 of the vacuum cleaner CL. The vacuum cleaner CL may be any type such as a floor-running type, a canister type, a stick type, an upright type, or a handy type. In the present embodiment, the vacuum cleaner CL will be described by taking a stick-type vacuum cleaner as an example. Also, in the illustrated example, the suction port body 1 is mechanically and fluidly connected to the extension pipe 6, which is a pipe portion, or to the cleaner body 3 via a connection pipe 11. By connecting the connection pipe 11, the air passage portion 101 and the suction port 100 of the suction port body 1, and in the present embodiment, further the suction holes 105 (each shown in FIG. 3), are fluidly communicated with the suction source 4 via the separation unit 5, respectively. Further, in the present embodiment, the operation or on / off or switching of the suction force of the suction source 4 is set by the user by operating the switch 8 of the hand operation unit 7 for gripping operation. In the cleaner body 3, a main body control unit 9 that operates the suction source 4 according to the operation set by the switch 8 is disposed. The power supply unit B of the vacuum cleaner CL is disposed in the cleaner body 3, for example. In the present embodiment, the power supply unit B is a battery or a secondary battery, but is not limited thereto, and may be a cord reel device that takes power from an external power source such as a commercial power supply.

[0043] Next, the cleaning operation of the first embodiment will be described.

[0044] First, the suction port body 1 is connected to the extension pipe 6 or the cleaner main body 3 through the connection pipe 11 so that the user can perform a cleaning operation via the hand operation unit 7. Then, the cleaning sheet 2 is attached and used.

[0045] The cleaning sheet 2 may be used without being folded or may be folded according to its size.

[0046] Basically, the cleaning sheet 2 aligns the front end portion with the suction port 100 of the suction port body 1 and is attached to the sheet holding portion 1020.

[0047] For example, an example of the attachment method when the cleaning sheet 2 is small and used without being folded is shown in FIG. 5. As shown in FIG. 5(a), the cleaning sheet 2 is placed on a flat installation position such as the portion F to be cleaned, and the front end portion of the cleaning sheet 2 is aligned within the width in the front-rear direction of the suction port 100 of the suction port body 1. At this time, if the axis of the second pipe portion 111 of the connection pipe 11 is configured to be behind the center of gravity of the main body portion 10 of the suction port body 1, the front portion of the main body portion 10 rotates downward due to its own weight, and the front portion of the main body portion 10 inclines so as to approach the cleaning sheet 2. Therefore, the alignment between the suction port 100 at the front portion of the main body portion 10 and the front end portion of the cleaning sheet 2 becomes easy.

[0048] Then, as shown in Fig. 5(b), the suction port body 1 is pressed against the cleaning sheet 2 from above, that is, the cleaning sheet 2 is sandwiched between the suction port body 1 and the installation position, so that the cleaning sheet 2 is adhesively held by the sheet holding portion 1020. In the present embodiment, since at least a part of the sheet holding portion 1020 capable of adhesively holding the cleaning sheet 2 is arranged behind the suction port 100 at the lower part of the suction port body 1, the cleaning sheet 2 can be easily attached to the suction port body 1. Further, in the present embodiment, the front portion and the rear portion of the cleaning sheet 2 are adhesively held by the front sheet holding portion 10200 and the rear sheet holding portion 10201. Note that the attachment method is not limited to placing the cleaning sheet 2 on the installation position and pressing the suction port body 1 from above. For example, the suction port body 1 may be placed on the installation position with the lower part facing upward, and the cleaning sheet 2 with the front end aligned within the width in the front-rear direction of the suction port 100 may be pressed against the sheet holding portion 1020 to attach the cleaning sheet 2. That is, the sheet holding portion 1020 and the cleaning sheet 2 may be aligned in the front-rear and left-right directions with respect to each other, and either one may be pressed against the other for mounting.

[0049] In this state, by operating the suction source 4 (shown in Fig. 7) by operating the switch 8, as shown in Fig. 5(c), the front end portion of the cleaning sheet 2 is suction-held to the suction port 100 by the negative pressure acting from the suction port 100. The front end portion of the cleaning sheet 2 adsorbed to the suction port 100 covers, for example, the lower end portion of the guide surface 1012. Further, the intermediate portion in the front-rear direction of the cleaning sheet 2 is suction-held by the negative pressure acting from the suction hole 105.

[0050] On the one hand, when the cleaning sheet 2 is large and is used in a folded state, the cleaning sheet 2 is attached to the suction port body 1 in the same manner as when it is used without being folded, in a folded state at a desired position. In the example shown in Fig. 6(a), the cleaning sheet 2 is folded in two at the folding portion 20. Taking the folding portion 20 as, for example, the front end portion, one of the first sheet portion 21 and the second sheet portion 22, for example, the first sheet portion 21, is held by the sheet holding portion 1020 for holding, and the other of the first sheet portion 21 and the second sheet portion 22, for example, the second sheet portion 22, is used for cleaning by being sandwiched between the first sheet portion 21 and the portion to be cleaned F. In the figure, a gap is shown between the first sheet portion 21 and the second sheet portion 22 for the sake of clarity in description, but in the actual use state, the first sheet portion 21 and the second sheet portion 22 are substantially overlapped without a gap vertically. Also, although an example in which the cleaning sheet 2 is folded in two from the folding portion 20 is shown, depending on the size of the cleaning sheet 2, it is not limited to being folded in two.

[0051] Then, the user moves the suction port body 1 back and forth on the portion to be cleaned F shown in Fig. 3 by the hand operation portion 7 shown in Fig. 7, sucks dust from the suction port 100, and wipes and cleans the portion to be cleaned F with the held cleaning sheet 2.

[0052] The cleaning sheet 2 is brought into contact with the area to be cleaned F by the self-weight of the suction inlet body 1 or the main body 10 and / or the pressing force applied by the user from the hand-operated part 7 via the sheet holding part 1020 and the pressing part 1021 of the sheet support part 102. As a result, dust hardly enters between the cleaning sheet 2 and the lower part of the suction inlet body 1, and the area to be cleaned F can be wiped and cleaned stably over a large area. Further, the front and rear parts of the cleaning sheet 2 are held by the sheet holding part 1020, the front end part of the cleaning sheet 2 is adsorbed and held by the suction port 100, and is adsorbed and held by the suction holes 105. Therefore, while the suction source 4 is operating, the cleaning sheet 2 is firmly held by the suction inlet body 1. In particular, when the user moves the suction inlet body 1 forward rather than backward, a greater force is applied. Therefore, in the operating state of the suction inlet body 1, the holding force for holding the cleaning sheet 2 on the front side of the suction inlet body 1 is stronger than the holding force for holding the cleaning sheet 2 on the rear side. This makes it particularly difficult for the cleaning sheet 2 to curl when the suction inlet body 1 moves forward. Furthermore, since the front end part of the cleaning sheet 2 is adsorbed and held inside the suction port 100, when the suction inlet body 1 is moved back and forth on the area to be cleaned F, the front end part of the cleaning sheet 2 is less likely to directly receive resistance from the area to be cleaned F, and curling of the cleaning sheet 2 starting from the front end part can be prevented. In the present embodiment, in the left-right direction, the suction holes 105 are arranged between the sheet holding parts 1020. Therefore, even if the adhesion holding by the sheet holding part 1020 is not strong, the cleaning sheet 2 can be firmly held by the adsorption holding by the suction holes 105. In particular, even when the cleaning sheet 2 is wet or a general-purpose one, the cleaning sheet 2 can be reliably held. Therefore, even when the suction inlet body 1 is moved back and forth on the area to be cleaned F, the cleaning sheet 2 is less likely to curl due to the resistance with the area to be cleaned F. Further, since the suction holes 105 are located at the center in the left-right direction of the main body 10 of the suction inlet body 1, the cleaning sheet 2 can be held in a well-balanced manner.

[0053] In addition, since the suction port 100 is opened from the front surface to the lower surface of the main body portion 10 of the suction port body 1, when the suction port body 1 is advanced on the portion to be cleaned F, even coarse dust such as cat litter or rice grains on the portion to be cleaned F can be sucked in without being pushed forward. Even when the front portion of the main body portion 10 of the suction port body 1 is brought into contact with the wall surface, the suction air passage can be secured, and dust at the wall edge can be sucked without being pinched between the suction port body 1 and the wall surface. Further, since cleaning is performed while moving the suction port body 1 back and forth on the portion to be cleaned F, although dust such as hair and coarse dust tends to concentrate and adhere to the front end portion of the cleaning sheet 2, the suction port 100 is longitudinally long in the left-right direction, and in this embodiment, the sheet support portion 102, that is, the sheet holding portion 1020, is close to the rear portion of the suction port 100 along the longitudinal direction of the suction port 100. Therefore, dust adhering to the front end portion of the cleaning sheet 2 close to the rear portion of the suction port 100 can also be sucked in, suppressing the progress of dirt on the front end portion of the cleaning sheet 2 over time and keeping this front end portion clean. Further, since the suction port 100 is formed corresponding to substantially the entire width of the sheet support portion 102 for bringing the cleaning sheet 2 into contact with the portion to be cleaned F, dust adhesion can be suppressed over substantially the entire width of the cleaning sheet 2. Therefore, the front end portion of the cleaning sheet 2 maintained in a clean state can always wipe and clean up to the portion to be cleaned F at the wall edge. Also, before the rear portion of the cleaning sheet 2 is fully utilized, the front end portion of the cleaning sheet 2 will not be forced to be replaced due to dirt on the front end portion, making it possible to effectively utilize the entire cleaning sheet 2. At the same time, the replacement frequency of the cleaning sheet 2 can be suppressed, reducing the number of replacement operations and suppressing wasteful use of resources. Further, even if the dust adhering to the front end portion of the cleaning sheet 2 is peeled off from the cleaning sheet 2 when the suction port body 1 is retracted, it is immediately sucked in from the suction port 100, making it difficult to leave the dust on the portion to be cleaned F.

[0054] The dust sucked in from the suction port 100 is sucked into the connecting pipe 11 by the negative pressure of the suction source 4 acting on the air passage portion 101. At this time, the guide surface 1012 formed in a planar or curved shape across the rear end portion of the suction port 100 and the front end portion of the connecting pipe 11 guides the dust from the suction port 100 to the front end portion of the connecting pipe 11, and as the suction port body 1 moves forward, the guide surface 1012 acts in a sled-like manner to impart an upward component to the dust. Thus, even for relatively large solid dust such as cat litter or rice grains, it can be smoothly and efficiently sucked along the guide surface 1012 up the air passage portion 101 in an inclined manner and into the connecting pipe 11. That is, by forming the guide surface 1012, the air passage portion 101 does not have a portion that sucks the dust directly upward, so even relatively heavy dust can be sucked into the connecting pipe 11 without generating a strong negative pressure at the suction port 100, and the suction of the cleaning target area F due to the negative pressure at the suction port 100 is suppressed, making the operation of the suction port body 1 lighter and the operability better. The sucked dust is sucked from the connecting pipe 11 into the separation portion 5 and separated and collected from the air.

[0055] When removing the dirty cleaning sheet 2 from the suction port body 1, when the user operates the switch 8 to stop the operation of the suction source 4, the negative pressure acting from the suction port 100 and the suction holes 105 disappears, so that the cleaning sheet 2 is only lightly adhered and held by the sheet holding portion 1020. Therefore, the cleaning sheet 2 can be easily removed from the sheet holding portion 1020, and when removing it, there is no need to apply a large force to the cleaning sheet 2, so the dust adhering to the cleaning sheet 2 is not easily peeled off. Also, when the suction holes 105 are arranged between the sheet holding portions 1020, when the negative pressure acting on the suction holes 105 disappears, a portion where the cleaning sheet 2 is not held by the suction port body 1 is generated between the sheet holding portions 1020 where the suction holes 105 are located. Thus, starting from this portion, the cleaning sheet 2 can be easily removed from the suction port body 1.

[0056] Also, for the large cleaning sheet 2, by folding it for use, one of the first sheet portion 21 and the second sheet portion 22 can be used for holding and the other for cleaning. The holding portion basically does not contact the portion to be cleaned F and does not get dirty. Therefore, when the cleaning portion gets dirty, the cleaning sheet 2 is once removed from the suction port body 1, turned over, and then reattached to the suction port body 1. Thus, the clean portion that was used for holding can be used for cleaning, and by further turning the front and back sides and using it, the large area of the cleaning sheet 2 can be used without any waste. In this case, for example, when the first sheet portion 21 is used for holding and the second sheet portion 22 is used for cleaning, and the suction port body 1 is lifted from the portion to be cleaned F and moved, as shown in FIG. 6(b), the second sheet portion 22 that is not directly held by the sheet holding portion 1020 of the suction port body 1 hangs downward from the folding portion 20 at the front end. Therefore, by moving the suction port body 1 so as to press it against the portion to be cleaned F downward and forward, the hanging second sheet portion 22 is folded from the desired position of the folding portion 20 and sandwiched between the first sheet portion 21 and the portion to be cleaned F in a folded state, achieving an appropriate use state. In the present embodiment, since the folding portion 20 is located at the front end of the cleaning sheet 2 held by the suction port body 1, curling is less likely to occur when the suction port body 1 is advanced.

[0057] (Second Embodiment) Next, the second embodiment will be described with reference to FIG. 8. Regarding the same configurations and operations as those in the first embodiment, the same reference numerals are given and the description thereof is omitted.

[0058] In the present embodiment, a plurality of suction holes 105 are set. For example, in the suction holes 105, a first suction hole 1050 located between the sheet holding portions 1020 and a second suction hole 1051 located along the longitudinal direction of the sheet holding portion 1020 and close to or adjacent to the rear portion of the sheet holding portion 1020 are set.

[0059] In this embodiment, one first suction hole 1050 is set at the center in the left - right direction at the lower part of the main body 10. In the illustrated example, the first suction hole 1050 is arranged between the left - and - right front - part sheet holding portions 10200. That is, the first suction hole 1050 and the front - part sheet holding portion 10200 of the sheet holding portion 1020 are arranged side by side in the left - right direction, that is, the longitudinal direction of the suction port 100. Also, the first suction hole 1050 is located in front of the center in the front - rear direction of the main body 10.

[0060] The second suction hole 1051 is formed longitudinally in the left - right direction longer than the first suction hole 1050. Both side portions of the second suction hole 1051 are located adjacent to the rear parts of the left - and - right sheet holding portions 1020. In this embodiment, the second suction hole 1051 is located between the front - part sheet holding portion 10200 and the pressing portion 1021 in the front - rear direction.

[0061] Then, place the cleaning sheet 2 on a flat installation position such as the area F to be cleaned, align the suction port 100 of the suction port body 1 with the front - end portion of the cleaning sheet 2, and press the suction port body 1 against the cleaning sheet 2 from above. After the cleaning sheet 2 is attached and held by the sheet holding portion 1020, by operating the switch 8 to operate the suction source 4, the cleaning sheet 2 is adsorbed and held by the negative pressure acting from the suction port 100 and the suction holes 105.

[0062] At this time, by setting a plurality of suction holes 105, the cleaning sheet 2 can be adsorbed by the negative pressure acting from the plurality of suction holes 105, and the cleaning sheet 2 can be held more reliably. This is particularly effective for cleaning sheets 2 such as wet cleaning sheets 2 for which it is difficult to ensure the holding force by the sheet holding portion 1020.

[0063] (Third Embodiment) Next, the third embodiment will be described with reference to FIG. 9. Regarding the configurations and operations similar to those of each embodiment, the same reference numerals are given and their descriptions are omitted.

[0064] In this embodiment, the suction hole 105 is provided in the sheet holding portion 1020. For example, the suction hole 105 is formed in the central portion of the sheet holding portion 1020. In the illustrated example, the suction hole 105 is formed in the central portion of the front sheet holding portion 10200 that is long in the left - right direction, that is, in the central portion in the left - right direction and the front - rear direction. Therefore, the sheet holding portion 1020 is positioned surrounding the periphery of the suction hole 105.

[0065] By providing the suction hole 105 together with the sheet holding portion 1020 in this way, even without making the adhesion holding by the sheet holding portion 1020 stronger, the suction holding at the suction hole 105 is added, and the cleaning sheet 2 can be firmly held, and the same operational effects as those of the respective embodiments can be achieved.

[0066] Also, compared with the case where the sheet holding portion 1020 and the suction hole 105 are provided at separate positions, the sheet holding portion 1020 can be arranged in a wider range in the limited space at the lower part of the suction port body 1 without complicating the shape of the sheet holding portion 1020.

[0067] (Fourth Embodiment) Next, the fourth embodiment will be described with reference to FIGS. 10 to 12. Regarding the configurations and operations similar to those of the respective embodiments, the same reference numerals are given and the descriptions thereof are omitted.

[0068] In this embodiment, the sheet holding portion 1020 located at the rear part of the main body portion 10 is arranged at the upper part of the main body portion 10.

[0069] For example, the rear sheet holding portion 10201 of the sheet holding portion 1020 is arranged at the upper part near the rear end portion of the lower case main body portion 1061 of the lower case 106 of the main body portion 10. The rear sheet holding portion 10201 is formed to be long in the left - right direction.

[0070] Then, after connecting the connecting pipe 11 of the suction port body 1 to the extension pipe 6 or the cleaner main body 3, similar to the above-described embodiments, the front end portion of the cleaning sheet 2 is aligned within the width in the front-rear direction of the suction port 100 of the suction port body 1, and the cleaning sheet 2 is attached to the sheet holding portion 1020. For example, as shown in FIG. 12(a), the cleaning sheet 2 is placed on a planar installation position such as the portion F to be cleaned, and the front end portion of the cleaning sheet 2 is aligned within the width in the front-rear direction of the suction port 100 of the suction port body 1. Then, as shown in FIG. 12(b), the suction port body 1 is pressed against the cleaning sheet 2 from above, that is, the cleaning sheet 2 is sandwiched between the suction port body 1 and the installation position, whereby the cleaning sheet 2 is adhesively held by the front sheet holding portion 10200.

[0071] In this state, with respect to the rear end portion of the cleaning sheet 2 protruding from the rear end portion of the main body portion 10 of the suction port body 1, as shown in FIG. 12(c), it is folded back upward to the upper portion of the main body portion 10 and adhesively held by the rear sheet holding portion 10201.

[0072] Then, by operating the suction source 4 by operating the switch 8, as shown in FIG. 12(d), the front end portion of the cleaning sheet 2 is suction-held to the suction port 100 and the suction holes 105 by the negative pressure acting from the suction port 100 and the suction holes 105.

[0073] The cleaning sheet 2 can be attached in the same manner even when it is folded and used.

[0074] In this way, the sheet holding part 1020 can be easily attached to the suction port body 1. For example, even when the area of the cleaning sheet 2 is larger than the area of the main body part 10 of the suction port body 1 in plan view and there is a large surplus part at the rear end part of the cleaning sheet 2, this rear end part can be attached to the suction port body 1 without overlapping the lower part of the suction port body 1. Therefore, it becomes possible to use cleaning sheets 2 of various sizes. In particular, when there is an even larger surplus part than the part adhered and held by the rear sheet holding part 10201, at the upper part of the main body part 10, the surplus part can be extended forward of the rear sheet holding part 10201 and below the connecting pipe 11, for example, to a position below the first pipe part 110. For example, by inserting the end part of the cleaning sheet 2 into the narrow gap between the lower part of the first pipe part 110 and the upper part of the lower case main body part 1061, the holding force of the cleaning sheet 2 can be further improved.

[0075] Regarding the rear end part of the cleaning sheet 2, since it is folded back at the upper part of the main body part 10 and held at a position away from the part to be cleaned F, when the suction port body 1 is moved backward on the part to be cleaned F, the resistance force from the part to be cleaned F does not directly act on the rear end part of the cleaning sheet 2, and it is possible to prevent the cleaning sheet 2 from being rolled up starting from the rear end part.

[0076] Furthermore, when removing the cleaning sheet 2 from the suction port body 1, since it is possible to start from the rear end part that is folded back at the upper part of the cleaning sheet 2 and not in direct contact with the part to be cleaned F, it can be removed hygienically.

[0077] Note that the rear sheet holding part 1020 is not limited to the upper part of the main body part 10. For example, even when it is arranged on the rear surface of the main body part 10, the cleaning sheet 2 can be easily attached to the suction port body 1, and the same operational effects as those of the fourth embodiment can be achieved, such as being able to cope with cleaning sheets 2 of various sizes.

[0078] (The fifth embodiment) Next, the fifth embodiment will be described with reference to FIG. 13. Regarding the same configurations and operations as those of each embodiment, the same reference numerals are given and their descriptions are omitted.

[0079] In this embodiment, the sheet holding portion 1020 extends along the front-rear direction from the rear portion of the suction port 100. Further, the rear end portion of the sheet holding portion 1020 extends to the vicinity of the rear end portion of the main body portion 10. Furthermore, the sheet holding portion 1020 is disposed along the side portion of the lower portion of the main body portion 10 at the positions of the rear portions of both the left and right side portions of the suction port 100.

[0080] Even with the configuration in which the sheet holding portion 1020 extends in the front-rear direction, the same operational effects as those of the respective embodiments, such as the cleaning sheet 2 being easily attachable to the suction port body 1, can be achieved.

[0081] Also, since the left and right sheet holding portions 1020 each extend in the front-rear direction, both side portions of the cleaning sheet 2 can be adhered and held by these sheet holding portions 1020 over a range from the front portion to the rear portion. Therefore, basically, the cleaning sheet 2 can be adhered and held by only one sheet holding portion 1020 on each of the left and right sides, so it is not necessary to provide a large number of sheet holding portions 1020.

[0082] (Sixth Embodiment) Next, the sixth embodiment will be described with reference to FIG. 14. Regarding the same configurations and operations as those of the respective embodiments, the same reference numerals are given and their descriptions are omitted.

[0083] In this embodiment, the side portion of the suction port 100 is offset toward the central portion side in the left-right direction with respect to the side portion of the main body portion 10, and each sheet holding portion 1020 is disposed in that space. That is, the sheet holding portions 1020 are respectively disposed on the left and right outer sides of the suction port 100. And at least a part of the sheet holding portion 1020 extends in the front-rear direction from the side portion of the suction port 100.

[0084] Each sheet holding part 1020 has its front end portion positioned at a position facing the side portion of the suction port 100 in the left - right direction. That is, the front end portion of each sheet holding part 1020 is positioned at a position overlapping the suction port 100 in the front - rear direction. Also, the sheet holding part 1020 has its rear end portion extending to the vicinity of the rear end portion of the main body part 10. In the present embodiment, each sheet holding part 1020 is positioned along the side portion of the lower part of the main body part 10. That is, each sheet holding part 1020 is positioned to cover the portion between the side portion of the suction port 100 and the side portion of the main body part 10 at the lower part of the main body part 10 of the suction port body 1.

[0085] Then, similar to each embodiment, the cleaning sheet 2 is attached and held to the suction port body 1, such as aligning the front end portion of the cleaning sheet 2 within the width of the suction port 100 of the suction port body 1 in the front - rear direction and attaching the cleaning sheet 2 to the sheet holding part 1020.

[0086] Regarding the front end portion of the cleaning sheet 2, even if it temporarily covers the suction port 100 in a state of being attached and held to the sheet holding part 1020, it is suction - held inside the suction port 100 by the negative pressure acting from the suction port 100, so the suction port 100 is not blocked by the cleaning sheet 2.

[0087] Thus, even with the configuration in which the sheet holding part 1020 extends in the front - rear direction from both side portions of the suction port 100, the cleaning sheet 2 can be easily attached to the suction port body 1, and the same operational effects as each embodiment can be achieved.

[0088] Note that in the fifth and sixth embodiments, the sheet holding parts 1020 are not limited to being continuous in the front - rear direction, and a plurality of them may be arranged intermittently in the front - rear direction.

[0089] (Seventh Embodiment) Next, the seventh embodiment will be described with reference to FIGS. 15 to 17. Regarding the same configurations and operations as each embodiment, the same reference numerals are given and their descriptions are omitted.

[0090] In this embodiment, the suction port body 1 is provided with a convex portion 108 on the main body portion 10. In this embodiment, the convex portion 108 has a function of enabling alignment of the cleaning sheet 2 with respect to the position of the front end portion of the sheet support portion 102. In the illustrated example, the convex portion 108 has a function of enabling alignment of the position of the front end portion of the sheet support portion 102 and the position of the front end portion of the cleaning sheet 2. Here, the front end portion of the cleaning sheet 2 includes the front end portion when the cleaning sheet 2 is used as it is and the front end portion (such as the folding portion 20, etc.) when the cleaning sheet 2 is folded and used. In the figure, an example in which the convex portion 108 is formed in the first embodiment is shown. The convex portion 108 protrudes laterally from the side surface portion 1072 of the upper case 107. For example, the position of its rear end portion substantially coincides with the position of the front end portion of the sheet support portion 102, and in this embodiment, the front end portion of the front sheet holding portion 10200 in the front-rear direction. Here, "substantially coincides" includes, in addition to the configuration that completely coincides, a deviation of several millimeters, for example, about 3 mm or less, in the front-rear direction. That is, "substantially coincides" allows a deviation within a range that does not hinder the substantial alignment of the position of the front end portion of the sheet support portion 102 and the position of the front end portion of the cleaning sheet 2.

[0091] In the illustrated example, the convex portion 108 is located at the front end portion of the upper case 107. In this embodiment, the convex portion 108 is formed in a box shape having a front surface portion 1080, an upper surface portion 1081, a side surface portion 1082, and a rear surface portion 1083.

[0092] The front surface portion 1080 is flush with the front surface of the upper case 107, extends in the left-right direction, and its lower part is continuous with the front part of the front surface portion 1070 and is located above the lower part of the lower case 106.

[0093] The upper surface portion 1081 is continuous with the upper part of the front surface portion 1080 and extends in the left-right direction. In this embodiment, the upper surface portion 1081 is located below the upper surface portion 1071 of the upper case 107.

[0094] The side surface portion 1082 is continuous with the side portions of the front surface portion 1080 and the upper surface portion 1081, and extends in the front-rear direction and the up-down direction.

[0095] The rear surface portion 1083 is a structural portion that constitutes the rear end portion of the convex portion 108. The rear surface portion 1083 is formed as a surface portion that extends from the rear portions of the upper surface portion 1081 and the side surface portion 1082 across the side surface portion 1072 of the upper case 107 in the up-down direction and the left-right direction. On the left-right extension of the rear surface of the rear surface portion 1083, the front end portion of the seat support portion 102, in this embodiment, the front end portion of the front seat holding portion 10200 is substantially located.

[0096] Preferably, the lower end of the rear portion of the rear surface portion 1083 is located at the lowermost portion of the main body portion 10 or the suction port body 1. In this embodiment, the lower portion of the side surface portion 1082 and the lower portion of the rear surface portion 1083 extend downward more than the lower portion of the front surface portion 1080, and are substantially flush with the lower portion of the lower case 106. That is, the lower end of the rear portion of the convex portion 108 is substantially flush with the lower portion of the lower case 106.

[0097] Also, preferably, the suction port 100 extends into the convex portion 108. That is, both side portions of the suction port 100 extend laterally more than the side surface portion 1072 of the upper case 107. Therefore, the rear surface of the front surface portion 1080, that is, the rear surface, forms a part of the partition surface 1012 of the air passage portion 101, the rear surface of the upper surface portion 1081, that is, the lower surface, forms a part of the ceiling surface 1014 of the air passage portion 101, and the rear surface of the side surface portion 1082, that is, the inner surface, forms a part of the side surface 1015 of the air passage portion 101, and the rear surface of the rear surface portion 1083, that is, the front surface, forms the rear surface of the air passage portion 101. Also, the front surface of the rear surface portion 1083 forms a part of the rear edge portion of the suction port 100.

[0098] When attaching the cleaning sheet 2, place the cleaning sheet 2 on a flat installation position such as the area to be cleaned F, align the line at the lower part of the rear surface portion 1083 of the convex portion 108 protruding laterally with the line at the front end portion of the cleaning sheet 2, and press the suction port body 1 against the cleaning sheet 2 from above, that is, sandwich the cleaning sheet 2 between the suction port body 1 and the installation position, thereby attaching and holding the cleaning sheet 2 to the sheet holding portion 1020.

[0099] That is, according to the present embodiment, by providing the convex portion 108 that protrudes in the left - right direction and can align the front end portion of the cleaning sheet 2 with respect to the position of the front end portion of the seat support portion 102, even when the user stands in the posture of cleaning, the user can mount the cleaning sheet 2 at an optimal position in the front - rear direction with reference to the rear surface portion 1083 of the convex portion 108.

[0100] For example, since the convex portion 108 protrudes in the left - right direction at a position substantially coinciding with the front end portion of the seat support portion 102, even when the user stands in the posture of cleaning, the user can mount the cleaning sheet 2 at an optimal position in the front - rear direction with reference to the rear surface portion 1083 of the convex portion 108.

[0101] In particular, since the rear surface portion 1083 of the convex portion 108 protrudes in the left - right direction at the position of the front end portion of the seat support portion 102, when aligning the convex portion 108 with the front end portion of the cleaning sheet 2 as viewed from the user located behind the suction port body 1 in the use state, the portion of the convex portion 108 in front of the rear surface portion 1083 does not obstruct the user's line of sight, making the alignment easier.

[0102] Also, since the suction port 100 extends into the convex portion 108, it is possible to prevent dust from adhering to the cleaning sheet 2 over the entire width up to the convex portion 108.

[0103] Furthermore, for example, when the rear surface portion 1083 is separated upward from the grounding position or when the marker indicating the mounting position of the cleaning sheet 2 is on the upper surface of the suction port body, due to the difference in the line - of - sight height of the user trying to mount the cleaning sheet 2 while standing, the position of the cleaning sheet 2 may shift from the rear end portion of the suction port 100, causing the cleaning sheet 2 to block the suction port 100 or dust to adhere to the cleaning sheet 2. However, since the lower end of the rear part of the rear surface portion 1083 is located at the lowermost part of the suction port body 1, the cleaning sheet 2 can be effectively mounted at a fixed or substantially fixed position regardless of the user's height and posture.

[0104] (Eighth Embodiment) Next, a description will be given of the eighth embodiment with reference to FIGS. 18 and 19. Regarding the configurations and operations similar to those of each embodiment, the same reference numerals are given and the description thereof is omitted.

[0105] In this embodiment, the convex portion 108 is formed in a rib shape on the main body portion 10. The convex portion 108 is formed as a rib that extends laterally from the side surface portion 1072 of the upper case 107 in the front-rear direction, has a thickness in the front-rear direction, and extends in the left-right direction and the up-down direction. In the illustrated example, the position of, for example, the rear end portion of the convex portion 108 substantially coincides with the front end portion of the seat support portion 102 in the front-rear direction, and in this embodiment, substantially coincides with the front end portion of the front seat holding portion 10200 in the front-rear direction. The meaning of "substantially coincide" here is the same as that of "substantially coincide" described in the seventh embodiment.

[0106] Preferably, the lower end of the rear portion of the convex portion 108, and in this embodiment, the lower end of the entire convex portion 108, is located at the lowermost portion of the main body portion 10 or the suction port body 1. That is, the lower end of the convex portion 108 extends to a position substantially flush with the lower portion of the lower case 106.

[0107] Even when the convex portion 108 is formed in a rib shape in this way, the user can mount the cleaning sheet 2 at an optimal position in the front-rear direction with the convex portion 108 as a guide while standing in the posture of cleaning, and the same operational effects as those of the seventh embodiment can be achieved.

[0108] Further, since the convex portion 108 is in a rib shape and has a small width in the front-rear direction, when the front end portion of the cleaning sheet 2 is displaced forward with respect to the convex portion 108, the user can easily visually recognize it. Therefore, it is easier for the user to distinguish whether the front end portion of the cleaning sheet 2 is displaced in the front-rear direction with respect to the convex portion 108, and the alignment accuracy can be further improved.

[0109] In the eighth embodiment, a configuration in which the rear surface of the convex portion 108 extends left and right from the position of the front end portion of the seat support portion 102 has been shown. However, when the thickness of the convex portion 108 is small, the position of the front end portion of the seat support portion 102 may be within the width of the convex portion 108.

[0110] In addition, in the seventh and eighth embodiments, an example is shown in which the convex portion 108 is the portion that protrudes most in the left - right direction in the main body portion 10. However, the present invention is not limited to this, and the main body portion 10 may have a portion that protrudes laterally with respect to the convex portion 108. In that case, it is preferable that the protruding portion is located at a position that does not block the convex portion 108 with respect to the user's line of sight.

[0111] Furthermore, the convex portion 108 is not limited to being a dedicated one indicating the position of the front end portion of the seat support portion 102, and any other arbitrary structure is also included as long as it has a function equivalent to that of the convex portion shown in the seventh and eighth embodiments.

[0112] Also, for each embodiment, they may be arbitrarily combined within a range that does not deviate from the gist of the invention and does not conflict with each other.

[0113] Although some embodiments of the present invention have been described, these embodiments are presented as examples, and it is not intended to limit the scope of the invention to these embodiments. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope.

Explanation of Reference Numerals

[0114] CL Vacuum cleaner F Area to be cleaned 1 Suction inlet body 2 Cleaning sheet 4 Suction source 11 Connecting pipe 20 Folding part 100 Suction inlet 102 Seat support portion 105 Suction hole 108 Convex portion 1012 Guide surface 1020 Seat holding portion

Claims

1. A suction port, a sheet support part having a sheet holding part to which a cleaning sheet can be attached and detached and for bringing the cleaning sheet into contact with a part to be cleaned; The seat support portion is disposed at a lower portion thereof adjacent to the rear or side of the suction port. A suction mouth body characterized by:

2. The suction port is elongated in the left-right direction, The sheet holding portion is arranged along a longitudinal direction of the suction port and is close to or adjacent to a rear portion of the suction port. The suction mouth body according to claim 1 .

3. The sheet holding portion extends in the front-rear direction from the left and right outer sides of the air inlet. The suction mouth body according to claim 1 .

4. The suction port is formed to correspond to substantially the entire width of the seat support portion. The suction mouth body according to claim 1 .

5. The suction port is elongated in the left-right direction, The seat support portion has a lower portion adjacent to a rear portion of the suction port along a longitudinal direction of the suction port. The suction mouth body according to claim 1 .

6. Equipped with a suction hole that communicates with the suction source and opens at the bottom 4. The suction mouth body according to claim 2 or 3.

7. The sheet holding portion is provided in plurality, The suction hole is provided between the sheet holding parts or is provided together with the sheet holding parts. The suction mouth body according to claim 6.

8. The suction hole is located in the center in the left-right direction. The suction mouth body according to claim 6.

9. The holding force for holding the cleaning sheet at the front side in the use state is stronger than the holding force for holding the cleaning sheet at the rear side The suction mouth body according to claim 1 .

10. a connecting pipe whose upstream end is located rearward of the suction port and communicates with the suction port and a suction source; a flat or curved guide surface formed across a rear end of the suction port and the upstream end of the connecting pipe for guiding dust; The suction mouth body according to claim 1, further comprising:

11. a protrusion that protrudes in the left-right direction and enables a front end of the cleaning sheet to be aligned with a front end of the sheet support part; The suction mouth body according to claim 1 .

12. A protrusion protruding in the left-right direction is provided, The rear end of the protrusion is positioned substantially coincident with the front end of the seat support portion. The suction mouth body according to claim 1 .

13. The suction port extends into the protrusion. The suction mouth body according to claim 11 or 12.

14. The rear lower end of the protrusion is located at the bottom The suction mouth body according to claim 11 or 12.

15. The suction port is open from the bottom surface to the front surface. The suction mouth body according to claim 1 .

16. The suction mouth body according to any one of claims 1 to 5 is provided. A vacuum cleaner characterized by:

17. A method for attaching a cleaning sheet to a suction port body, comprising the steps of: Using the suction mouth body according to any one of claims 1 to 5, The cleaning sheet is attached to the sheet holding part by aligning a front end of the cleaning sheet with the suction port of the suction port body. A method for attaching a cleaning sheet to a suction mouth body.

18. The cleaning sheet folded from the folding portion is attached to the sheet holding portion with the folding portion as a front end portion. The method for attaching a cleaning sheet to a suction mouth body according to claim 17.

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