Suction inlet body and electric vacuum cleaner

Abstract

The invention provides a suction inlet body which can smoothly suck dust and has good operability on a cleaned part, and an electric dust collector provided with the suction inlet body. The suction inlet body (1) is provided with: a suction inlet (100) that opens at least in the front; a sheet support section (102) for bringing the cleaning sheet (2) into contact with the section (F) to be cleaned; a connection tube (11) which communicates with a suction source and which has an upstream end positioned rearward of the suction inlet (100); and an air passage section (101) formed in a non-curved shape from the suction port (100) toward the upstream end of the connection pipe (11).

Description

Technical Field

[0001] Embodiments of the present invention relate to a suction port to which a cleaning sheet can be attached and used, and an electric vacuum cleaner including the suction port. Background Art

[0002] In the past, the following electric vacuum cleaners were known: a cleaning sheet such as a nonwoven fabric was held in the suction port of the electric vacuum cleaner, and suction cleaning and wiping cleaning were performed on the floor surface and other parts to be cleaned at the same time. As for the air path from the suction port for suction cleaning to the connecting pipe, it is difficult to suck up coarse dust such as sand with a certain mass in the case of a shape that temporarily sucks the dust vertically upward and then transports it to the connecting pipe. In addition, a large negative pressure is required in the case of sucking such coarse dust upward, so there is also the possibility that the operability is reduced due to adsorption to the part to be cleaned based on the negative pressure.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2005-554

[0006] Patent Document 2: Japanese Patent Application Publication No. 2019-115506 Summary of the invention

[0007] The problem to be solved by the present invention is to provide a suction port body that can smoothly suck dust and exhibits good operability on a cleaned portion, and an electric vacuum cleaner having the suction port body.

[0008] The suction port body of the embodiment comprises: a suction port, which is open at least at the front; a sheet support portion, which is used to make the cleaning sheet abut against the cleaned portion; a connecting pipe, which is connected to the suction source and has an upstream end located behind the suction port; and an air path portion, which is formed in a non-bent shape from the suction port toward the upstream end of the connecting pipe.

[0009] According to the above-mentioned structure, dust can be sucked smoothly and the operability on the cleaned part is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a longitudinal sectional side view which shows the suction port body of one embodiment.

[0011] Figure 2 This is a perspective sectional view showing the above-mentioned suction port body from the side.

[0012] Figure 3 yes Figure 1 The cross-sectional view of the corresponding position of II.

[0013] Figure 4 This is a perspective view showing the above-mentioned suction port body from below.

[0014] Figure 5 This is a perspective view showing the above-mentioned suction port body from above.

[0015] Figure 6 It is a perspective view showing an example of an electric vacuum cleaner including the above-mentioned suction port body.

[0016] Description of Reference Numerals

[0017] CL…Electric vacuum cleaner, F…Part to be cleaned, 1…Suction port body, 2…Cleaning sheet, 4…Suction source, 11…Connecting pipe, 100…Suction port, 101…Air path portion, 102…Sheet supporting portion, 1012…Guide surface, 1016…Guide portion, 1020…Sheet holding portion. DETAILED DESCRIPTION

[0018] Hereinafter, one embodiment will be described with reference to the drawings.

[0019] exist Figures 1 to 5 In the figure, 1 represents the suction port body. The suction port body 1 cleans the surface to be cleaned, such as the floor, that is, the cleaned part F. In the present embodiment, a separate cleaning sheet 2 can be assembled on the suction port body 1. When the cleaning sheet 2 is assembled, the user moves the suction port body 1 on the cleaned part F and can simultaneously perform suction cleaning and wiping cleaning. That is, the suction port body 1 is a cleaning accessory that can perform suction cleaning and wiping cleaning. In addition, hereinafter, based on the state in which the suction port body 1 is placed on the horizontal cleaned part F and used, the vertical up and down direction is defined as the up and down direction, the direction away from the user is defined as the front, and the direction close to the user is defined as the rear, and the left and right directions are defined when viewed from the front. In the accompanying drawings, the arrow FR direction is set to the front, the arrow RR direction is set to the rear, the arrow U direction is set to the top, the arrow D direction is set to the bottom, the arrow L direction is set to the left, and the arrow R direction is set to the right.

[0020] The suction port body 1 has a main body 10 and a connection pipe 11. The main body 10 is elongated in the left-right direction, which is the two side directions. That is, the main body 10 is horizontally long.

[0021] The main body 10 has a suction port 100 for suction cleaning. The suction port 100 is located at the front of the main body 10. In the example shown in the figure, the suction port 100 is at least located at the front end or the frontmost part of the main body 10. That is, the suction port 100 is at least located on the front surface of the main body 10. In the present embodiment, the suction port 100 opens from the front end to the lower part of the main body 10. In the example shown in the figure, the suction port 100 opens from the front surface to the lower surface of the main body 10. The suction port 100 is long along the length direction of the main body 10. That is, the suction port 100 is long in the left and right directions. In addition, the suction port 100 is set so that the left and right dimensions are quite large relative to the front and rear dimensions. That is, the suction port 100 is a slender horizontally long shape. The suction port 100 is continuous between the left and right side parts of the main body 10. The left side part of the suction port 100 is located at the left side part of the lower part of the main body 10, and the right side part of the suction port 100 is located at the right side part of the lower part of the main body 10. In the present embodiment, the suction port 100 is substantially located at a position corresponding to the entire width of the main body 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 10. In addition, hereinafter, "substantially" includes the meaning of "completely" and the meaning of "approximately".

[0022] The air inlet 100 is connected to the air passage portion 101. The air passage portion 101 is formed inside the main body 10 above the air inlet 100. The air passage portion 101 connects the air inlet 100 with the upstream end, i.e., the front end, of the connecting pipe 11 located behind it. In the present embodiment, the air passage portion 101 includes: a general air passage portion 1010 which is continuous throughout the entire length direction of the air inlet 100; and a connecting air passage portion 1011 which connects the air inlet 100 with the connecting pipe 11. The connecting air passage portion 1011 is connected to the central portion of the general air passage portion 1010 in the left-right direction, and extends further upward and backward than the general air passage portion 1010.

[0023] The general air passage 1010 of the air passage 101 in the left-right direction of the air inlet 100, that is, in the entire width direction, is formed into a non-bent shape that is inclined toward the upper rear side from the front end of the air inlet 100 toward the downstream side, and in particular, the connecting air passage 1011 in the central part of the left-right direction, which is a position opposite to the front end of the connecting pipe 11, is formed into a non-bent shape in a manner that is inclined toward the upper rear side from the front end of the air inlet 100 toward the front end of the connecting pipe 11. "Non-bent shape" includes: a straight line, or a gently curved shape that is formed without a portion bent at an angle below a right angle, etc. In the present embodiment, the air passage 101 is formed into a straight line from the front end of the air inlet 100 toward the front end of the connecting pipe 11.

[0024] The air passage part 101 is a chamber part or a duct part, and the chamber part or the duct part is surrounded by a guiding surface 1012 forming the lower side of the rear part, a partitioning surface 1013 forming the upper side of the front part, a top surface 1014 forming the upper part, and side surfaces 1015 forming both side parts, and the air passage part 101 is open from the lower side of the front part to the lower part through a suction port 100.

[0025] Regarding the guiding surface 1012, its lower part forms the rear end part of the suction port 100 and stands upright in an inclined shape toward the upper side of the rear. The guiding surface 1012 is a substantially uneven-free surface shape and guides the dust sucked from the suction port 100 to the connecting pipe 11. The guiding surface 1012 extends in a long strip shape along the left-right direction in the general air passage part 1010 and extends in a manner of protruding upward relative to other parts when connecting the air passage part 1011. Preferably, the guiding surface 1012 is formed into a planar shape or a curved surface shape. For example, the inclination angle of the guiding surface 1012 relative to the horizontal plane or the inclination angle of the tangent plane of the guiding surface 1012 is set to 45° or less.

[0026] Regarding the partitioning surface 1013, its lower part forms the front end part of the suction port 100, is located at a position separated upward from the guiding surface 1012, and faces the guiding surface 1012 in the up-down direction and the front-rear direction. The partitioning surface 1013 is formed in an inclined shape toward the upper side of the rear in the same manner as the guiding surface 1012. The partitioning surface 1013 is a substantially uneven-free surface shape. The partitioning surface 1013 extends in a long strip shape along the left-right direction in the general air passage part 1010 and extends in a manner of protruding upward relative to other parts when connecting the air passage part 1011. Preferably, the partitioning surface 1013 is formed into a planar shape or a curved surface shape. In the present embodiment, the inclination angle of the partitioning surface 1013 relative to the horizontal direction is larger than the inclination angle of the guiding surface 1012 relative to the horizontal direction. Therefore, the air passage part 101 is formed to gradually expand in the front-rear direction toward the downstream side from the suction port 100.

[0027] The top surface 1014 is located at a position separated above and behind the suction port 100. The top surface 1014 is connected to the upper part of the partitioning surface 1013. The top surface 1014 extends horizontally along the left-right direction in the general air passage part 1010 and bends in a manner of protruding upward along the shape of the partitioning surface 1013 when connecting the air passage part 1011.

[0028] The side surfaces 1015 are surfaces connected to both side parts of the partitioning surface 1013 and the top surface 1014 and extending along the up-down direction and the front-rear direction. The side surfaces 1015 form both side parts of the general air passage part 1010 and both side parts of the suction port 100. In the present embodiment, the side surfaces 1015 extend more downward than the partitioning surface 1013.

[0029] Preferably, there is formed in the air passage part 101 Figure 3The guide portion 1016 shown. The guide portion 1016 guides the dust sucked from the left and right sides of the suction port 100 to the upstream end, i.e., the front end, of the connecting pipe 11 in the central portion in the left-right direction. The guide portion 1016 extends over the left and right sides of the suction port 100 and the front end of the connecting pipe 11 to form a non-bent shape. In the present embodiment, the guide portion 1016 extends over the left and right sides of the suction port 100 and the front end of the connecting pipe 11 to form a straight line inclined in the left-right direction. The guide portion 1016 is formed in a rib shape relative to the guide surface 1012. That is, the guide portion 1016 is located at: the rear end of the suction port 100 and the rear of the air path portion 101. The guide portion 1016 extends from the front end of the left and right sides of the guide surface 1012 to the upper rear side of the central portion in the left-right direction. In the example shown in the figure, the guide portion 1016 extends from the general air passage portion 1010 to a position connecting the left and right sides of the air passage portion 1011 .

[0030] In addition, if Figure 1 and Figure 4 As shown, the main body 10 has a sheet support portion 102 for wiping and cleaning. The sheet support portion 102 is a portion for making the cleaning sheet 2 abut against the cleaned portion F by utilizing the dead weight of the suction port body 1 or the main body 10, or by pressure from the top by the user, and is preferably a portion for pressing the cleaning sheet 2 to the cleaned portion F for close contact. That is, the sheet support portion 102 is a portion for sandwiching the cleaning sheet 2 between the cleaned portion F. The sheet support portion 102 is located behind the suction port 100, and in the present embodiment, is located at a position close to the rear end of the suction port 100 at the lower part of the main body 10. In the illustrated example, the sheet support portion 102 is located at the lower part of the main body 10, close to the rear end of the suction port 100 along the longitudinal direction of the suction port 100. In the present embodiment, the sheet support portion 102 is adjacent to the rear end of the suction port 100. In the following, “adjacent” includes not only a state of being adjacent without a gap but also a state of being adjacent with a slight gap therebetween.

[0031] At least a portion of the sheet support 102 is formed at the lower portion of the main body 10 to form the entire rear end portion of the main body 10 that reaches the rear of the suction port 100. For example, the sheet support 102 is located at a position opposite to the suction port 100 substantially over the entire width of the front end portion of the sheet support 102. The sheet support 102 and the suction port 100 have substantially equal left and right dimensions, and the central portions in the left and right directions are substantially consistent.

[0032] In the present embodiment, the sheet support portion 102 has a sheet holding portion 1020 capable of detaching and attaching the cleaning sheet 2. The sheet holding portion 1020 is preferably a component capable of lightly holding the cleaning sheet 2 to an easily detachable degree. For example, the sheet holding portion 1020 is a component capable of attaching and holding the cleaning sheet 2, and preferably uses a hook component that holds the cleaning sheet 2 by hooking the fibers constituting the cleaning sheet 2. It is not limited to this, and as the sheet holding portion 1020, a hook component made of synthetic resin or the like formed integrally with the main body portion 10 may also be used, and a reusable adhesive component, such as an adhesive pad, may also be used.

[0033] At least a portion of the sheet holding portion 1020 is disposed at the rear or side of the suction port 100 at the lower portion and / or upper portion of the main body 10. In the present embodiment, the sheet holding portion 1020 is disposed at the rear of the suction port 100. In the illustrated example, the sheet holding portion 1020 is long in the left-right direction, and a plurality of sheet holding portions are provided in the front-to-back direction. For example, the sheet holding portion 1020 includes: a front sheet holding portion 10200 located at the front side, and a rear sheet holding portion 10201 located at the rear side. The invention is not limited thereto, and the sheet holding portion 1020 may, for example, extend along the front-to-back direction, or may be dispersedly provided at multiple locations.

[0034] In the present embodiment, the front sheet holding portion 10200 is at the lower part of the main body 10, along the length direction of the suction port 100, and close to the rear part of the suction port 100. A plurality of the front sheet holding portions 10200 are set in the left-right direction, and are respectively adjacent to the rear end of the suction port 100. For example, the front sheet holding portion 10200 is set as a left-right pair, and is located at a separated position from each other in the left-right direction. In the illustrated example, the left side portion of the left front sheet holding portion 10200 is located at the left side portion of the lower part of the main body 10, and is located in a position parallel to the left side portion of the suction port 100 in the front-to-back direction, and the right side portion of the front sheet holding portion 10200 is located at the right side portion of the lower part of the main body 10 on the right side, and is located in a position parallel to the right side portion of the suction port 100 in the front-to-back direction. In addition, each front sheet holding portion 10200 is long in the left-right direction and is substantially in the shape of a strip with a constant width, and is located substantially parallel to the suction port 100. Not limited to this, each front sheet holding portion 10200 can be divided into a plurality of parts in the front-back and / or left-right direction.

[0035] The rear sheet holding portion 10201 is located at a position separated toward the rear relative to the front sheet holding portion 10200. The rear sheet holding portion 10201 can be located at the lower part of the main body 10, or at the upper part, or at the upper part and the lower part respectively. In the illustrated example, the rear sheet holding portion 10201 is arranged along the rear end of the lower part of the main body 10. The rear sheet holding portion 10201 is in the shape of a long strip and substantially in the shape of a strip of constant width in the left-right direction, and is continuously arranged as one from the left side to the right side of the main body 10 in the left-right direction. That is, the left side of the rear sheet holding portion 10201 is located at the left side of the lower part of the main body 10, and the right side of the rear sheet holding portion 10201 is located at the right side of the lower part of the main body 10. It is not limited to this, and the rear sheet holding portion 10201 can be divided into multiple parts in the front-back and / or left-right directions.

[0036] In the present embodiment, the sheet holding portion 1020 is disposed in a holding portion mounting portion 103 that is recessed in the lower portion of the main body 10 and is substantially flush with the lower surface of the main body 10 .

[0037] In addition, the sheet support portion 102 has a pressing portion 1021 for contacting the cleaned portion F 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 a larger area than the sheet holding portion 1020 in the sheet support portion 102. In the present embodiment, the pressing portion 1021 is located at the lower portion of the main body 10, substantially occupying the entirety between the front sheet holding portion 10200 and the rear sheet holding portion 10201. That is, the pressing portion 1021 is located at a position 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 long in the left-right direction and is substantially in the shape of a band with a constant width, and is located at a position substantially parallel to the suction port 100 and the sheet holding portion 1020. The pressing part 1021 is located continuously between the left and right sides of the main body 10. That is, the left side of the pressing part 1021 is located on the left side of the lower part of the main body 10, and the right side of the pressing part 1021 is located on the right side of the lower part of the main body 10.

[0038] For example, the pressing part 1021 is substantially formed into a flat plate shape by a soft material such as an elastomer or polyurethane. In addition, the pressing part 1021 can be divided into a plurality of parts in the front-back and / or left-right directions. In addition, the pressing part 1021 may not be soft.

[0039] In this embodiment, the pressing portion 1021 is mounted on a pressing portion mounting portion 104 that is recessed at the lower portion of the main body 10 and is substantially coplanar with the lower portion of the main body 10 .

[0040] Preferably, the suction hole 105 for adsorbing and holding the cleaning sheet 2 opens 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 at the sheet support portion 102. The suction hole 105 is set to be single or multiple. For example, the suction hole 105 is provided between a plurality of sheet holding portions 1020. In the present embodiment, one suction hole 105 is provided at the central portion in the left-right direction of 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 located at positions alternately arranged in the left-right direction, i.e., in the longitudinal direction of the suction port 100. Therefore, the suction hole 105 is located in front relative to the central portion in the front-back direction of the main body 10. In the present embodiment, the suction holes 105 are located at positions separated in the left-right direction from the left and right front sheet holding portions 10200 .

[0041] The suction hole 105 and the suction source 4 ( Figure 6 In this embodiment, the suction hole 105 is connected to the air passage portion 101, and is connected to the suction source 4 ( Figure 6 For example, the suction hole 105 is formed to penetrate the guide surface 1012 of the air path portion 101. The suction hole 105 is formed in a long strip shape in the left-right direction. The opening area of ​​the suction hole 105 is smaller than the suction port 100. For example, the suction hole 105 is opened in a slit shape whose left-right dimension and front-back dimension are smaller than the suction port 100.

[0042] Furthermore, preferably, when the suction port body 1 is in use, the front side is set to be stronger than the rear side as a holding force for holding the cleaning sheet 2 on the suction port body 1. In this embodiment, the holding force on the front side is the combined force of the adhesion holding force based on the front sheet holding portion 10200 and the adsorption holding force based on the suction hole 106, while the holding force on the rear side is only the adhesion holding force based on 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.

[0043] The main body 10 is divided into a plurality of shell components. In the present embodiment, the main body 10 includes a lower shell 106 as one shell component and an upper shell 107 as another shell component covering a portion of the lower shell 106. The lower shell 106 and the upper shell 107 can be further divided into a plurality of components.

[0044] The lower housing 106 constitutes: a part of the air inlet 100 and a part of the air path 101. The lower housing 106 is formed of, for example, a hard synthetic resin. In addition, the lower housing 106 constitutes: more than half of the lower part of the main body 10. In this embodiment, a sheet support portion 102 is formed at the lower part of the lower housing 106. In the example shown in the figure, the lower housing 106 is formed in a long strip shape in the left-right direction.

[0045] A raised portion 1060 is formed at the front of the lower shell 106. The front surface of the raised portion 1060 constitutes: a guide surface 1012 of the air path portion 101. Due to the inclined shape of the guide surface 1012, the raised portion 1060 is formed into a triangle whose height gradually decreases toward the front side. In addition, a lower shell body portion 1061 is formed at the rear of the lower shell 106. The lower shell body portion 1061 is formed into: a flat plate extending in the front-to-back direction and the left-to-right direction. The side portion of the lower shell body portion 1061 constitutes: a side portion of the rear portion of the main body 10. The sheet holding portion 1020 and the pressing portion 1021 are located at the lower portion of the lower shell 106. In addition, a connecting pipe support portion 1062 for supporting the connecting pipe 11 is formed in the lower shell 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 portion of the lower housing body 1061. The connection pipe support portion 1062 is located in the center portion in the left-right direction. The connection pipe support portion 1062 protrudes upward in a stepped manner relative to the lower housing body 1061. The height of the lower housing 106 increases in a stepped manner in the order of the lower housing body 1061, the connection pipe support portion 1062, and the raised portion 1060.

[0046] The upper housing 107 is composed of the remaining other parts of the air inlet 100 and the remaining other parts of the air passage portion 101. The upper housing 107 is formed of, for example, a hard synthetic resin. The upper housing 107 covers the upper part of the front part of the lower housing 106, the raised part 1060 in this embodiment, and the upper part of the connecting pipe support part 1062, and is fixed to the upper part of the lower housing 106. In this embodiment, the upper housing 107 is formed in a long strip shape in the left-right direction.

[0047] The upper housing 107 has a front surface 1070, an upper surface 1071, a side surface 1072, and a rear surface 1073. The back surface of the front surface 1070, that is, the rear surface, constitutes the partition surface 1012 of the air duct 101. The front portion 1070 is formed in a long strip shape in the left-right direction, and the central portion in the left-right direction extends upward. The front surface 1070 is formed in a convex shape when viewed from the front. The lower part of the front surface 1070 is located at a position higher than the lower part of the lower housing 106.

[0048] The back side, i.e., the lower side, of the upper surface portion 1071 is constituted by: the top surface 1014 of the air passage portion 101. The upper surface portion 1071 is connected to the upper portion of the front surface portion 1070, and is formed in a long strip shape in the left-right direction. In addition, the central portion in the left-right direction of the upper surface portion 1071 is formed as a connecting pipe support portion 10710 as follows: it is bent in a manner protruding upward corresponding to the shape of the front surface portion 1070, extends further rearward than the rear surface portion 1073, and is opposite to the upper side of the connecting pipe support portion 1062 of the lower shell 106. The connecting pipe support portion 10710 is bent in an arc shape. In addition, the guide portion 1016 is integrally formed at the lower portion of the upper surface portion 1071. The guide portion 1016 extends downward from the upper surface portion 1071, and its lower end portion is substantially in airtight contact with the guide surface 1012. In addition, the rear end portion of the guide portion 1016 is connected to the rear surface portion 1073.

[0049] The side surface portion 1072 constitutes: the side portion of the front portion of the main body 10, and its back side, that is, the inner surface, constitutes: the side surface 1015 of the air path portion 101. The side surface portion 1072 is connected to the two side portions of the front surface portion 1070 and the upper surface portion 1071, and extends along the front-to-back direction and the up-down direction. In this embodiment, the lower portion of the side surface portion 1072 extends further downward than the lower portion of the front surface portion 1070, and is substantially coplanar with the lower portion of the lower shell 106. The two side portions and the front end portion of the suction port 100 are demarcated by the side surface portions 1072, 1072 and the lower portion of the front surface portion 1070. Each side surface portion 1072 is formed in a thin plate shape, and the left and right dimensions or width of the suction port 100 are roughly consistent with the left and right dimensions or width of the main body 10.

[0050] The rear surface portion 1073 is connected to the portion other than the central portion in the left-right direction at the rear of the upper surface portion 1071. The rear surface portion 1073 is formed in a strip shape in the left-right direction and extends in the up-down direction and the left-right direction. The rear surface portion 1073 overlaps with the rear portion of the raised portion 1060 of the lower housing 106 in the front-back direction.

[0051] Furthermore, the upper housing 107 is fixed to the lower housing 106 by means of the housing mounting portion 1074. The housing mounting portion 1074 is formed, for example, in a cylindrical shape or a boss shape having an axis in the up-down direction, and is connected to both sides of the connecting pipe support portion 10710. A fixing member such as a screw is inserted from above with respect to the housing mounting portion 1074, and is fixed to the upper portion of the lower housing main body portion 1061 of the lower housing 106, thereby fixing the upper housing 107 and the lower housing 106 to each other, and the front end portion of the connecting pipe 11 is rotatably clamped between the connecting pipe supports 10710 and 1062.

[0052] The connecting pipe 11 is used to connect the suction port 100 and the suction hole 105 to the suction source 4 (described later) via the air passage portion 101. Figure 6 The connecting pipe 11 is preferably connected to the main body 10 in a rotatable manner. In the present embodiment, the connecting pipe 11 has: a plurality of shaft portions whose directions of rotation axes intersect each other, and the angle relative to the main body 10 can be changed to any direction. In the example shown in the figure, the first pipe portion 110 and the second pipe portion 111 are connected to form the connecting pipe 11, wherein the first pipe portion 110 is: an upstream side pipe portion that can rotate in a direction around the axis, and the second pipe portion 111 is: a downstream side pipe portion having a rotation axis in a direction orthogonal to the rotation axis of the first pipe portion 110.

[0053] The cleaning sheet 2 is a soft sheet of a square shape, for example, formed of a nonwoven fabric or cloth, and may be a dedicated structure or a general-purpose commercial product. The cleaning sheet 2 preferably has a wide width or area that covers at least the sheet support portion 102 of the suction port 1. For example, the cleaning sheet 2 is formed into a square shape having a left-right dimension greater than the left-right dimension of the sheet support portion 102, and a front-back dimension greater than the front-back dimension of the sheet support portion 102. The cleaning sheet 2 can be used in a state appropriately folded according to the size of the sheet support portion 102 or in a state of multiple folds and overlaps, or it can be used in a state of being folded and kept as one sheet without being folded. The cleaning sheet 2 can be a dry type, or it can be a wet type infiltrated with a liquid such as water or a liquid medicine for cleaning the cleaning portion F.

[0054] Moreover, if Figure 6 As shown, the suction port body 1 is used for an electric vacuum cleaner CL. In the present embodiment, the suction port body 1 is applied to a suction-type electric vacuum cleaner CL, and the suction-type electric vacuum cleaner CL is configured to suck dust and air into the separation portion 5 by utilizing the negative pressure generated by driving a suction source 4 such as an electric blower disposed on the vacuum cleaner body 3 of the electric vacuum cleaner CL. The electric vacuum cleaner CL can be any type such as a floor-moving type or a canister type, a pole type, an upright type or a handheld type. In the present embodiment, a pole-type electric vacuum cleaner is cited as an example to illustrate the electric vacuum cleaner CL. In addition, in the illustrated example, the suction port body 1 is mechanically and fluidically connected to the extension pipe 6 or the vacuum cleaner body 3 as a pipe portion by means of a connecting pipe 11. Through the connection of the connecting pipe 11, the air path portion 101 and the suction port 100 of the suction port body 1, and then the suction hole 106 in the present embodiment (respectively at Figure 3) are connected to the suction source 4 in a fluid manner by means of a separation portion 5. Furthermore, in the present embodiment, the user sets the action of the suction source 4 or the on / off or switching of the suction force by operating the switch 8 of the manual operating portion 7 for holding the operation. The main control unit 9 that causes the suction source 4 to perform an action according to the operation set by the switch 8 is arranged on the vacuum cleaner body 3. The power supply unit B of the electric vacuum cleaner CL is, for example, arranged on the vacuum cleaner body 3. In the present embodiment, the power supply unit B is a storage battery or a secondary battery, but is not limited thereto, and may also be a winding device that obtains power from an external power source such as a commercial power supply.

[0055] Next, a cleaning operation according to one embodiment will be described.

[0056] First, the suction port body 1 is connected to the connection pipe 11 and the extension pipe 6 or the cleaner body 3 , thereby bringing the user into a state where the user can perform a cleaning operation via the manual operation portion 7 .

[0057] Next, 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 it is assembled to the sheet holding portion 1020. As an example, 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. At this time, if the axis of the second pipe portion 111 of the connection pipe 11 is located more rearward than 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 will rotate downward due to its own weight, and the front portion of the main body portion 10 will tilt in a manner approaching 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. Moreover, the suction port body 1 is pressed onto 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 attached and held to the sheet holding portion 1020. In the present embodiment, at least a part of the sheet holding portion 1020 capable of attaching and holding the cleaning sheet 2 is arranged below the suction port body 1 and behind the suction port 100. Therefore, the cleaning sheet 2 can be easily attached to the suction port body 1. In addition, in the present embodiment, the front portion and the rear portion of the cleaning sheet 2 are attached and held by the front sheet holding portion 10200 and the rear sheet holding portion 10201. Furthermore, it is not limited to the installation method of 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 can be placed on the installation position with the lower portion facing upward, and the cleaning sheet 2 whose front end portion is aligned within the width in the front-rear direction of the suction port 100 is pressed onto the sheet holding portion 1020 to install the cleaning sheet 2. That is, as long as they are aligned in the front-rear, left-right directions and either one is pressed against the other to assemble the sheet holding portion 1020 and the cleaning sheet 2. In addition, when a large remaining portion is generated at the rear end portion of the cleaning sheet 2, the remaining portion can be folded back toward the upper portion of the main body portion 10, for example, inserted and held between the lower housing 106 of the main body portion 10 and the connection pipe 11.

[0058] In this state, the suction source 4 ( Figure 6 as shown) is operated by the switch 8 to perform an action, so that the front end portion of the cleaning sheet 2 is adsorbed and 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 air passage portion 102. In addition, the middle portion in the front-rear direction of the cleaning sheet 2 is adsorbed and held by the negative pressure acting from the suction hole 105.

[0059] Moreover, the user uses Figure 6 the manual operation portion 7 as shown to move the suction port body 1 in Figure 1The cleaning sheet 2 moves in the front-rear direction on the portion to be cleaned F shown in the figure, and sucks dust from the suction port 100, while wiping and cleaning the portion to be cleaned F with the cleaning sheet 2 held thereon.

[0060] The cleaning sheet 2 is brought into contact with the cleaned portion F by the sheet holding portion 1020 and the pressing portion 1021 of the sheet supporting portion 102, and by the weight of the suction port body 1 or the main body 10, and / or the pressing force applied by the user from the manual operation portion 7, so that dust is difficult to enter between the cleaning sheet 2 and the lower portion of the suction port body 1, and the cleaned portion F can be wiped and cleaned stably over a large area. In addition, the front and rear portions of the cleaning sheet 2 are held by the sheet holding portion 1020, and the front end portion of the cleaning sheet 2 is adsorbed and held on the suction port 100, and adsorbed and held by the suction hole 105, so that the cleaning sheet 2 is firmly held on the suction port body 1 while the suction source 4 is in operation. In particular, when the user moves the suction port body 1 forward, a greater force is applied than when the suction port body 1 is moved backward. Therefore, when the suction port body 1 is in use, the holding force of the cleaning sheet 2 on the front side of the suction port body 1 is stronger than the holding force of the cleaning sheet 2 on the rear side, so that the cleaning sheet 2 is difficult to roll up, especially when the suction port body 1 moves forward. In addition, the front end of the cleaning sheet 2 is adsorbed and held inside the suction port 100. Therefore, when the suction port body 1 is moved along the front-to-back direction on the cleaned portion F, the front end of the cleaning sheet 2 is difficult to directly receive resistance from the cleaned portion F, which can prevent the cleaning sheet 2 from rolling up starting from the front end. In this embodiment, the suction hole 105 is arranged between the sheet holding portion 1020 in the left-right direction. Therefore, even if the attachment holding based on the sheet holding portion 1020 is not strongly performed, the cleaning sheet 2 can be firmly held by applying adsorption holding to the suction hole 105. In particular, whether the cleaning sheet 2 is a wet type or a general type, the cleaning sheet 2 can be reliably held. Therefore, even when the suction port body 1 is moved in the front-rear direction on the cleaned portion F, the cleaning sheet 2 is difficult to roll up due to the resistance of the cleaned portion F. In addition, the suction hole 105 is located in the center of the main body 10 of the suction port body 1 in the left-right direction, so the cleaning sheet 2 can be held in a balanced manner.

[0061] In addition, the suction port 100 is open from the front surface to the lower surface of the main body portion 10 of the suction port body 1. Thus, when the suction port body 1 advances on the portion F to be cleaned, even large dust such as cat litter or rice grains on the portion F to be cleaned can be sucked in without being pressed forward. Even when the front portion of the main body portion 10 of the suction port body 1 abuts against a wall surface, a suction air path can be ensured, so that the dust at the wall corners can be sucked in without being pinched between the suction port body 1 and the wall surface. Further, the suction port body 1 is moved in the front-rear direction on the portion F to be cleaned for cleaning. Therefore, although dust such as hair or large dust is likely to concentrate and adhere to the front end portion of the cleaning sheet 2, since the suction port 100 is formed in a long strip shape in the left-right direction and the sheet support portion 102, in this embodiment, the sheet holding portion 1020 is close to the rear portion of the suction port 100 along the length direction of the suction port 100, the 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, so that the accumulation of dirt on the front end portion of the cleaning sheet 2 over time can be suppressed, and the front end portion can be kept clean. In addition, the sheet support portion 102 is used to bring the cleaning sheet 2 into contact with the portion F to be cleaned, and the suction port 100 is substantially formed corresponding to the entire width of the sheet support portion 102. Therefore, the adhesion of dust can be suppressed substantially over 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 be used for wiping and cleaning up to the portion F to be cleaned at the wall corners. In addition, the following situation will not occur: the cleaning sheet 2 has to be replaced due to the dirt on the front end portion when the rear portion of the cleaning sheet 2 has not been fully used. Thus, the entire cleaning sheet 2 can be effectively utilized, and the replacement frequency of the cleaning sheet 2 can be suppressed. Therefore, the number of replacement operations can be reduced, and the waste of resources can be suppressed. Further, when the suction port body 1 retreats, even if the dust adhering to the front end portion of the cleaning sheet 2 peels off from the cleaning sheet 2, it will immediately be sucked in from the suction port 100. Therefore, it is difficult for the dust to remain on the portion F to be cleaned.

[0062] The dust sucked from the suction port 100 is sucked toward the connecting pipe 11 due to the negative pressure of the suction source 4 acting on the air path portion 101. At this time, since the air path portion 101 connecting the suction port 100 and the front end of the connecting pipe 11 is formed into a non-bent shape, compared with the case where there is a portion for sucking the dust directly upward, a strong negative pressure is not generated in the suction port 100, and even heavy dust can be smoothly sucked toward the connecting pipe 11, and adsorption to the cleaned portion F due to the negative pressure of the suction port 100 is suppressed, so that the operability of the suction port body 1 on the cleaned portion F is reduced, thereby improving the operability. In addition, the guide surface 1012 formed in a flat or curved shape extending across the rear end of the suction port 100 and the front end of the connecting pipe 11 can guide the dust from the suction port 100 to the front end 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 air volume to the dust, thereby, even larger solid dust such as cat litter or rice grains can be caused to rise in an inclined state in the air path portion 101 along the guide surface 1012 and be smoothly and efficiently attracted to the connecting pipe 11. Furthermore, even if the dust is attracted at the left and right side positions of the suction port 100, that is, at a position not directly opposite to the front end of the connecting pipe 11 in the front-to-back direction, the guide portion 1016 is formed into a non-bent shape by covering the left and right side portions of the suction port 100 and the front end of the connecting pipe 11, and the dust can be guided to the rear side of the central portion in the left-right direction by the guide portion 1016, and at the same time, it rises along the guide surface 1012 in the air path portion 101 and is attracted to the connecting pipe 11 smoothly and efficiently. The attracted dust is sucked from the connecting pipe 11 to the separation portion 5, separated from the air, and captured.

[0063] When the soiled cleaning sheet 2 is removed from the suction port body 1, if the user operates the switch 8 to stop the action of the suction source 4, the negative pressure generated from the suction port 100 and the suction hole 105 will disappear, and thus the cleaning sheet 2 is only formed in a state of being lightly attached and held by the sheet holding portion 1020. Therefore, the cleaning sheet 2 can be easily removed from the sheet holding portion 1020, and during the removal, it is not necessary to apply a large force to the cleaning sheet 2, so that the dust attached to the cleaning sheet 2 is difficult to peel off. In addition, in the case where the suction hole 105 and the sheet holding portion 1020 are alternately arranged, if the negative pressure acting on the suction hole 105 disappears, a portion where the cleaning sheet 2 is not held in the suction port body 1 will be generated between the sheet holding portion 1020 where the suction hole 105 is located, so the cleaning sheet 2 can be easily removed from the suction port body 1 starting from this portion.

[0064] Although several embodiments of the present invention have been described, these embodiments are presented as examples, and the scope of the invention is not intended to be limited to the above embodiments. These new embodiments can be implemented in various other ways, and various omissions, substitutions, changes, etc. can be made without departing from the scope of the invention. The above embodiments and their variations are included in the scope and spirit of the invention, and are included in the invention described in the claims and the scope of their equivalents.

Claims

1. A suction mouthpiece, characterized in that: The suction mouth body comprises: a suction opening which is open at least at the front; A sheet support portion for bringing the cleaning sheet into contact with the portion to be cleaned; a connecting pipe, which is in communication with the suction source and has an upstream end located behind the suction port; as well as The air passage portion is formed in a non-bent shape from the air inlet toward the upstream end portion of the connecting pipe.

2. The suction nozzle according to claim 1, characterized in that: The air passage portion includes a planar or curved guide surface that is formed across a rear end portion of the suction port and the upstream end portion of the connection pipe and that guides dust.

3. The suction nozzle according to claim 1, characterized in that: The suction port is arranged along the longitudinal direction of the sheet support portion and close to the front portion of the sheet support portion. The sheet supporting portion includes a sheet holding portion that is disposed at the front portion along the suction port and that is capable of attaching and detaching the cleaning sheet.

4. The suction nozzle according to claim 1, characterized in that: The suction port is open from the front surface to the lower surface.

5. The suction nozzle according to claim 1, characterized in that: The air passage portion includes a guide portion formed in a non-bent shape over left and right side portions of the air inlet and an upstream end portion of the connecting pipe.

6. An electric vacuum cleaner, characterized in that: The electric vacuum cleaner includes the suction port body according to any one of claims 1 to 5.

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