Suction inlet body, electric dust collector, and method for attaching dust collection sheet of suction inlet body

Abstract

The invention relates to a suction inlet body, an electric dust collector and a method for installing a dust collection sheet of the suction inlet body. The dust collection sheet can be easily installed. The suction inlet body (1) is provided with a suction inlet (100), and a sheet support section (102) for bringing a dust collection sheet (2) into contact with a portion to be subjected to dust collection. The sheet supporting part (102) is provided with a sheet holding part (1020) at the lower part, at least a part of the sheet holding part (1020) is arranged behind or on the side of the suction inlet (100), and the dust collection sheet (2) can be attached and detached.

Description

Technical Field

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

[0002] In the past, it is known that a vacuum sheet such as a nonwoven fabric is held in the suction port of an electric vacuum cleaner, and suction and wiping of the vacuumed part such as the floor are performed simultaneously. In order to reliably hold the vacuum sheet so that it does not roll up or fall off when wiping the vacuumed part, it is necessary to perform a complicated installation operation such as winding the vacuum sheet around the main body of the suction port and pressing the end of the vacuum sheet into a sheet mounting part composed of a plurality of tongues.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2005-554

[0004] Patent Document 2: Japanese Patent Application Publication No. 2019-115506 Summary of the invention

[0005] The problem to be solved by the present invention is to provide a suction port body to which a dust collection sheet can be easily attached, an electric vacuum cleaner including the suction port body, and a method for attaching the dust collection sheet to the suction port body.

[0006] The suction port body of the embodiment includes a suction port and a sheet support part for making the dust collection sheet contact the dust collection part. The sheet support part has a sheet holding part at the bottom, at least a part of which is arranged adjacent to the rear or side of the suction port and can detach the dust collection sheet.

[0007] Effects of the Invention

[0008] In the present invention, the dust collecting sheet can be easily attached by attaching and detaching the dust collecting sheet through the sheet holding portion at least part of which is arranged behind or on the side of the suction port. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a perspective view showing the suction port body of the first embodiment from below.

[0010] Figure 2 It is a three-dimensional view showing the above-mentioned suction port body from above.

[0011] Figure 3 It is a longitudinal sectional side view showing the above-mentioned suction port body.

[0012] Figure 4 It is a three-dimensional cross-sectional view showing the above-mentioned suction port body.

[0013] Figure 5It is a longitudinal sectional side view which shows an example of the method of attaching the dust collection sheet to the above-mentioned suction port body in the order of (a) to (c).

[0014] Figure 6 (a) is a longitudinal sectional side view showing a state where the dust collecting sheet is used in a folded state, and (b) is a longitudinal sectional side view showing a state where (a) is lifted from a dust collecting portion.

[0015] Figure 7 It is a perspective view showing an example of an electric vacuum cleaner including the above-mentioned suction port body.

[0016] Figure 8 This is a perspective view showing the suction port body of the second embodiment from below.

[0017] Fig. 9 This is a three-dimensional view showing the suction port body of the third embodiment from below.

[0018] Fig.10 It is a longitudinal sectional side view showing the suction port body of the fourth embodiment.

[0019] Fig.11 It is a three-dimensional cross-sectional view showing the above-mentioned suction port body.

[0020] Fig.12 It is a longitudinal sectional side view which shows an example of the method of attaching the dust collection sheet to the above-mentioned suction port body in the order of (a) to (d).

[0021] Fig.13 This is a three-dimensional view showing the suction port body of the fifth embodiment from below.

[0022] Fig.14 This is a three-dimensional view showing the suction port body of the sixth embodiment from below.

[0023] Explanation of symbols

[0024] CL: electric vacuum cleaner; F: vacuumed part; 1: suction port; 2: vacuum sheet; 4: suction source; 11: connecting pipe; 20: folding part; 100: suction port; 102: sheet support part; 105: suction hole; 1012: guide surface; 1020: sheet holding part. DETAILED DESCRIPTION

[0025] (First embodiment)

[0026] Hereinafter, a first embodiment will be described with reference to the drawings.

[0027] exist Figures 1 to 4In the figure, 1 represents the suction port body. The suction port body 1 vacuums the dusted surface such as the floor, i.e., the dusted part F. In the present embodiment, a separate dust collection sheet 2 can be installed on the suction port body 1. When the dust collection sheet 2 is installed, the user moves the suction port body 1 on the dusted part F, thereby being able to simultaneously perform suction and wiping dust collection. That is, the suction port body 1 is a dust collection accessory that can perform suction and wiping dust collection. In addition, below, based on the state in which the suction port body 1 is placed on the horizontal dusted part F for use, 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, 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 figure, 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.

[0028] The inlet body 1 has a main body 10 and a connecting pipe 11. The main body 10 is elongated in both sides, that is, in the left-right direction. That is, the main body 10 is horizontally long.

[0029] The main body 10 has a suction port 100 for suctioning dust. 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 extends from the front end of the main body 10 to the lower opening. In the example shown in the figure, the suction port 100 extends from the front surface of the main body 10 to the lower surface opening. The suction port 100 is in the shape of an elongated strip along the length direction of the main body 10. That is, the suction port 100 is in the shape of an elongated strip in the left and right directions. In addition, the suction port 100 is set to be quite large in left and right dimensions relative to the front and rear dimensions. That is, the suction port 100 is in a slender horizontally long shape. The suction port 100 is continuous between the left and right side portions of the main body 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 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 10. In the present embodiment, the suction port 100 is located at a position corresponding to substantially 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, the so-called "substantially" includes the meaning of "completely" and the meaning of "approximately".

[0030] 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 has a general air passage portion 1010 that is continuous throughout the length direction of the air inlet 100, and a connecting air passage portion 1011 that connects the air inlet 100 to 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 to a position above and behind the general air passage portion 1010.

[0031] The air passage section 101 is formed in a non-curved shape inclining toward the upper rear side from the front end of the air inlet 100 toward the downstream side in the general air passage section 1010 that covers the entire width direction of the air inlet 100. In particular, in the connecting air passage section 1011 at the position opposite to the front end of the connecting pipe 11, that is, at the center of the left-right direction, the air passage section 101 is formed in a non-curved shape inclining toward the upper rear side from the front end of the air inlet 100 toward the front end of the connecting pipe 11. The "non-curved shape" includes a straight line shape or a gently curved shape formed in a manner without a portion bent at an angle below a right angle. In the present embodiment, the air passage section 101 is formed in a straight line shape from the front end of the air inlet 100 toward the front end of the connecting pipe 11.

[0032] The air path portion 101 is a chamber portion or duct portion surrounded by a guide surface 1012 forming the rear lower side, a partition surface 1013 forming the front upper side, a top surface 1014 forming the upper portion, and side surfaces 1015 forming the two side portions, and extends from the front lower side to the lower portion through the suction port 100 opening.

[0033] The lower part of the guide surface 1012 forms the rear end of the suction port 100, and stands up in an inclined shape toward the rear upper side. The guide surface 1012 is a substantially non-convex surface, and guides the dust sucked from the suction port 100 to the connecting pipe 11. The guide surface 1012 extends in a long strip along the left and right directions in the general air path portion 1010, and extends in a manner protruding upward relative to other parts in the connecting air path portion 1011. Preferably, the guide surface 1012 is formed in a plane or a curved surface. For example, the inclination angle of the guide surface 1012 relative to the horizontal plane or the inclination angle of the node plane of the guide surface 1012 relative to the horizontal plane is set to be less than 45°.

[0034] The lower part of the dividing surface 1013 forms the front end of the air inlet 100, is located at a position away from the guide surface 1012 upward, and is opposite to the guide surface 1012 in the up-down direction and the front-back direction. The dividing surface 1013 is the same as the guide surface 1012, and is formed in an inclined shape toward the upper rear side. The dividing surface 1013 is a surface shape without substantially concave and convex. The dividing surface 1013 extends in a long strip in the left-right direction in the general air path portion 1010, and extends in a manner protruding upward relative to other parts in the connecting air path portion 1011. Preferably, the dividing surface 1013 is formed in a plane or a curved surface. In the present embodiment, the inclination angle of the dividing surface 1013 relative to the horizontal direction is larger than the inclination angle of the guide surface 1012 relative to the horizontal direction. Therefore, the air path portion 101 is formed to gradually widen from the air inlet 100 to the downstream side in the front-back direction.

[0035] The top surface 1014 is located upward and rearwardly away from the air inlet 100. The top surface 1014 is connected to the upper portion of the partition surface 1013. The top surface 1014 extends horizontally in the left-right direction in the general air passage portion 1010, and is curved in a manner protruding upward along the shape of the partition surface 1013 in the connecting air passage portion 1011.

[0036] The side surface 1015 is a surface that is connected to the two sides of the partition surface 1013 and the top surface 1014 and extends in the up-down direction and the front-back direction. The side surface 1015 forms the two sides of the general air passage portion 1010 and the two sides of the suction port 100. In this embodiment, the side surface 1015 extends to a position lower than the partition surface 1013.

[0037] In addition, the main body 10 has a sheet support portion 102 for wiping dust collection. The sheet support portion 102 is a portion for bringing the dust collection sheet 2 into contact with the dust collection portion F by the weight of the suction port body 1 or the main body 10 or by pressure from above by the user, and is preferably a portion for pressing the dust collection sheet 2 toward the dust collection portion F to make it in close contact. That is, the sheet support portion 102 is a portion for clamping the dust collection sheet 2 between the dust collection 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 addition, in the following description, the term "adjacent" includes not only a state of being adjacent without a gap but also a state of being adjacent with a slight gap therebetween.

[0038] At least a portion of the sheet support 102 forms a partial integral portion of the rear end portion of the main body 10 extending to the rear of the suction port 100 at the lower portion of the main body 10. For example, the suction port 100 is located at a position opposite to the substantially 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 substantially coincide with each other in the left and right directions.

[0039] In the present embodiment, the sheet support portion 102 has a sheet holding portion 1020 that can detach the dust collecting sheet 2. The sheet holding portion 1020 is preferably a component that can lightly hold the dust collecting sheet 2 to a degree that it can be easily removed. For example, the sheet holding portion 1020 is a component that can attach and hold the dust collecting sheet 2, and preferably uses a hook component of a hook belt that holds the dust collecting sheet 2 by hooking the fibers that constitute the dust collecting sheet 2. It is not limited to this, and as the sheet holding portion 1020, a hook component made of a synthetic resin or the like that is formed integrally with the main body 10 can be used, or a reusable adhesive component such as an adhesive pad can be used.

[0040] At least a portion of the sheet holding portion 1020 is disposed behind or to the side of the suction port 100 at the lower portion and / or the upper portion of the main body 10. In the present embodiment, the sheet holding portion 1020 is disposed behind the suction port 100. In the illustrated example, a plurality of sheet holding portions 1020 are provided at the front and rear. For example, the sheet holding portion 1020 includes a front sheet holding portion 10200 and a rear sheet holding portion 10201.

[0041] In the present embodiment, the front sheet holding part 10200 is close to the rear part of the suction port 100 along the length direction of the suction port 100. The front sheet holding part 10200 is set to be multiple on the left and right, respectively adjacent to the rear end of the suction port 100. For example, the front sheet holding part 10200 is set as a pair of left and right, located at a position separated from each other in the left and right directions. In the illustrated example, the left side of the front sheet holding part 10200 on the left is located at the left side of the lower part of the main body 10 and arranged front and back with the left side of the suction port 100, and the right side of the front sheet holding part 10200 is located at the right side of the lower part of the main body 10 on the right and arranged front and back with the right side of the suction port 100. In addition, each front sheet holding part 10200 is long and substantially strip-shaped with a certain width in the left and right directions, and is substantially arranged in parallel with the suction port 100. It is not limited to this, and each front sheet holding part 10200 can also be divided into multiple parts in front and back and / or left and right.

[0042] The rear sheet holding portion 10201 is located at a position away from the front sheet holding portion 10200 in the front-to-back direction. For example, the rear sheet holding portion 10201 is arranged along the rear end portion of the lower part of the main body 10. The rear sheet holding portion 10201 is in the shape of an elongated strip in the left-right direction and is substantially in the shape of a band of a certain width, and is continuously arranged from the left side to the right side of the main body 10 in the left-to-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 also be divided into multiple parts in the front-to-back and / or left-to-right directions.

[0043] 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 .

[0044] In addition, the sheet support portion 102 has a pressing portion 1021, which does not hold the vacuum sheet 2 but is used to enable the vacuum sheet 2 to abut against the vacuumed portion F. 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 larger than the sheet holding portion 1020 in the sheet support portion 102. In the present embodiment, the pressing portion 1021 occupies substantially the entirety between the front sheet holding portion 10200 and the rear sheet holding portion 10201 in the lower portion of the main body 10. That is, the pressing portion 1021 is located 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 certain width, and is located substantially parallel to the suction port 100 and the sheet holding portion 1020. In addition, the pressing portion 1021 is located at a position continuously connected between the left and right side portions of the main body 10. That is, the left side portion of the pressing portion 1021 is located at the left side portion of the lower portion of the main body 10, and the right side portion of the pressing portion 1021 is located at the right side portion of the lower portion of the main body 10.

[0045] For example, the pressing part 1021 is formed into a substantially flat plate shape by a soft material such as an elastomer or polyurethane. In addition, the pressing part 1021 may also be divided into a plurality of parts in the front and back and / or left and right. In addition, the pressing part 1021 may not be soft.

[0046] 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 .

[0047] Preferably, a suction hole 105 for adsorbing and holding the dust collection 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 at the sheet support portion 102. One or more suction holes 105 are set. For example, the suction hole 105 is arranged between a plurality of sheet holding portions 1020. In the present embodiment, one suction hole 105 is set 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 a position arranged in the left-right direction, i.e., the longitudinal direction of the suction port 100. Therefore, the suction hole 105 is located in front of the central portion in the front-back direction of the main body 10. In the present embodiment, the suction hole 105 is located at a position separated from the left-right direction relative to the left and right front sheet holding portions 10200.

[0048] The suction hole 105 and the suction source 4 ( Figure 7 In this embodiment, the suction hole 105 is connected to the air passage portion 101, and is connected to the suction source 4 ( Figure 7 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 long strip shape in the left-right direction. The opening area of ​​the suction hole 105 is smaller than the opening area of ​​the suction port 100. For example, the suction hole 105 is opened in a slit shape with a left-right dimension and a front-back dimension smaller than that of the suction port 100.

[0049] Furthermore, it is preferred that, when the suction port body 1 is in use, the front side is set to be stronger than the rear side as the holding force for holding the dust collection sheet 2 to the suction port body 1. In this embodiment, the holding force on the front side is the sum of the adhesion holding force generated by the front sheet holding portion 10200 and the adsorption holding force generated by the suction hole 105, while the holding force on the rear side is only the adhesion holding force generated by the rear sheet holding portion 10201, thereby making it possible to set the holding force on the front side stronger than the holding force on the rear side.

[0050] The main body 10 is divided into a plurality of housing parts. In the present embodiment, the main body 10 includes a lower housing 106 as one housing part, and an upper housing 107 as another housing part that covers the upper part of a portion of the lower housing 106. The lower housing 106 and the upper housing 107 may be further divided into a plurality of parts.

[0051] The lower shell 106 constitutes a part of the air inlet 100 and a part of the air path 101. The lower shell 106 is formed of, for example, a hard synthetic resin. In addition, the lower shell 106 constitutes more than half 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 shell 106. In the example shown in the figure, the lower shell 106 is formed in a long strip shape in the left-right direction.

[0052] A raised portion 1060 is formed at the front of the lower housing 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 becomes a triangular shape whose height gradually decreases toward the front side. In addition, a lower housing body 1061 is formed at the rear of the lower housing 106. The lower housing body 1061 is in the shape of a flat plate extending in the front-rear direction and the left-right direction. The side of the lower housing body 1061 forms the side of the rear of the main body 10. The sheet holding portion 1020 and the pressing portion 1021 are located at the lower portion of the lower housing 106. Furthermore, a connecting pipe support portion 1062 for supporting the connecting pipe 11 is formed at the lower housing 106. The connecting pipe support portion 1062 is located behind the raised portion 1060 or the guide surface 1012 and is formed at the upper portion of the lower housing body 1061. The connecting pipe support part 1062 is located in the center of the left-right direction. The connecting pipe support part 1062 protrudes upward in a stepped manner relative to the lower shell body 1061. The height of the lower shell 106 increases in a stepped manner in the order of the lower shell body 1061, the connecting pipe support part 1062 and the raised part 1060.

[0053] The upper housing 107 constitutes the remaining other parts of the air inlet 100 and the remaining other parts of the air path 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 portion of the lower housing 106, and in this embodiment, covers the upper part of the protrusion 1060 and the connection pipe support portion 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.

[0054] The upper housing 107 has a front surface portion 1070, an upper surface portion 1071, a side surface portion 1072, and a rear surface portion 1073. The back surface of the front surface portion 1070, that is, the rear surface, forms a dividing surface 1012 of the air duct portion 101. The front surface 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. When viewed from the front, the front surface portion 1070 is in a convex shape. The lower portion of the front surface portion 1070 is located above the lower portion of the lower housing 106.

[0055] The back side, i.e., the lower side, of the upper surface portion 1071 forms 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 bent in a manner protruding upward corresponding to the shape of the front surface portion 1070, extending to a position further rearward than the rear surface portion 1073, and forming a connection pipe support portion 10710 opposite to the upper side of the connection pipe support portion 1062 of the lower housing 106. The connection pipe support portion 10710 is bent in an arc shape.

[0056] The side surface portion 1072 forms the side portion of the front portion of the main body portion 10, and its back side, i.e., the inner surface, forms 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 the present embodiment, the lower portion of the side surface portion 1072 extends to a position lower 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 air inlet 100 are divided 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 air inlet 100 are roughly consistent with the left and right dimensions or width of the main body portion 10.

[0057] 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 the rear portion of the raised portion 1060 of the lower housing 106 in the front-back direction.

[0058] Furthermore, the upper housing 107 is fixed to the lower housing 106 via 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 into the housing mounting portion 1074 and fixed to the upper portion of the lower housing main body portion 1061 of the lower housing 106, whereby the upper housing 107 and the lower housing 106 are fixed to each other, and the front end portion of the connecting pipe 11 is rotatably clamped between the connecting pipe supports 10710 and 1062.

[0059] The connecting pipe 11 connects the suction port 100 and the suction hole 105 to the suction source 4 (described later) via the air passage portion 101. Figure 7Preferably, the connecting pipe 11 is rotatably connected to the main body 10. In the present embodiment, the connecting pipe 11 has a plurality of shafts whose rotation axis directions intersect each other, and can change the angle relative to the main body 10 in any direction. In the example shown in the figure, the connecting pipe 11 is configured such that an upstream side pipe portion, i.e., a first pipe portion 110, which can rotate in a direction around an axis, is connected to a downstream side pipe portion, i.e., a second pipe portion 111, which has a rotation axis in a direction orthogonal to the rotation axis of the first pipe portion 110.

[0060] The vacuum sheet 2 is a soft sheet of a quadrilateral shape, for example, formed of nonwoven fabric, cloth, etc., and may be a dedicated sheet or a general-purpose commercial product. The vacuum sheet 2 preferably has a size or area of ​​the sheet support portion 102 that at least covers the suction port body 1. For example, the vacuum sheet 2 is formed into a quadrilateral 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 vacuum 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 multi-layer folding, or can be used in a state of being folded without being folded and directly being one sheet. The vacuum sheet 2 can be a dry type or a wet type that absorbs a liquid such as water or liquid medicine for cleaning the vacuumed portion F.

[0061] And, if Figure 7 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 the following suction-type electric vacuum cleaner CL: dust is sucked into the separation part 5 together with air 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 may be of any type such as a floor-moving type, a horizontal type, a pole type, a vertical type or a handheld type. In the present embodiment, the electric vacuum cleaner CL is described by taking a pole-type electric vacuum cleaner as an example. 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 via a connecting pipe 11. Through the connection of the connecting pipe 11, the air path portion 101 of the suction port body 1, the suction port 100, and the suction hole 105 further included in the present embodiment (as shown in FIGS. 1 and 10) are connected to each other. Figure 3 As shown), they are fluidly connected to the suction source 4 via the separation portion 5. Furthermore, in the present embodiment, the user sets the operation of the suction source 4 or the on / off or switching of the suction force by operating the switch 8 of the hand-held operation portion 7 for holding the operation. A main body control portion 9 is provided in the vacuum cleaner body 3 for operating the suction source 4 according to the operation set by the switch 8. The power supply portion B of the electric vacuum cleaner CL is, for example, provided in the vacuum cleaner body 3. In the present embodiment, the power supply portion 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.

[0062] Next, the cleaning operation of the first embodiment will be described.

[0063] First, the suction port 1 is connected to the connection pipe 11 and the extension pipe 6 or the cleaner body 3, thereby enabling the user to perform a vacuuming operation via the handy operation unit 7. Then, the vacuuming sheet 2 is attached and used.

[0064] The dust collecting sheet 2 may be used unfolded or folded depending on its size.

[0065] Basically, the dust collection sheet 2 is attached to the sheet holding portion 1020 with the front end portion aligned with the suction port 100 of the suction port body 1 .

[0066] For example, in Figure 5 An example of the installation method when the dust collecting sheet 2 is small and not folded for use is shown in FIG. Figure 5 As shown in (a), a vacuum sheet 2 is placed on a flat setting position of the vacuumed portion F, etc., and the front end of the vacuum sheet 2 is aligned within the width of the suction port 100 of the suction port body 1 in the front-to-back direction. At this time, if the axis of the second pipe portion 111 constituting the connecting pipe 11 is located at a position rearward of the center of gravity of the main body 10 of the suction port body 1, the front of the main body 10 rotates downward due to its own weight, and the front of the main body 10 is tilted in a manner close to the vacuum sheet 2, so that it is easy to align the suction port 100 located at the front of the main body 10 with the front end of the vacuum sheet 2.

[0067] Then, if Figure 5 As shown in (b), the suction port body 1 is pressed against the dust collection sheet 2 from above, that is, the dust collection sheet 2 is clamped between the suction port body 1 and the setting position, thereby attaching and holding the dust collection sheet 2 on the sheet holding portion 1020. In this embodiment, at least a portion of the sheet holding portion 1020 capable of attaching and holding the dust collection sheet 2 is arranged at the lower part of the suction port body 1, behind the suction port 100, so that the dust collection sheet 2 can be easily installed on the suction port body 1. In addition, in this embodiment, the front and rear parts of the dust collection sheet 2 are attached and held by the front sheet holding portion 10200 and the rear sheet holding portion 10201. In addition, the installation method is not limited to placing the dust collection 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 portion facing upward, and the dust collection sheet 2 may be installed by aligning the front end portion within the width of the suction port 100 in the front-to-back direction and pressing the dust collection sheet 2 against the sheet holder 1020. That is, the sheet holder 1020 and the dust collection sheet 2 may be installed by aligning the front and back left and right sides of the sheet holder 1020 and pressing one side against the other side.

[0068] In this state, the suction source 4 ( Figure 7 As shown) action, Figure 5 As shown in (c), the front end of the vacuum sheet 2 is held by suction at the suction port 100 by the negative pressure applied from the suction port 100. The front end of the vacuum sheet 2 attached to the suction port 100 covers, for example, the lower end of the guide surface 1012. In addition, the middle portion of the vacuum sheet 2 in the front-to-back direction is held by suction by the negative pressure applied from the suction hole 105.

[0069] On the other hand, when the dust collecting sheet 2 is large and is used in a folded state, the dust collecting sheet 2 is folded at a desired position and attached to the suction port body 1 in the same manner as when it is used without being folded. Figure 6 In the example shown in (a), the vacuum sheet 2 is folded into two layers at the folding portion 20, and the folding portion 20 is used as the front end, for example, one of the first sheet 21 and the second sheet 22, for example, the first sheet 21 is held in the sheet holding portion 1020 for holding, and the other of the first sheet 21 and the second sheet 22, for example, the second sheet 22 is sandwiched between the first sheet 21 and the vacuumed portion F for use in vacuuming. In addition, in the figure, a gap is shown between the first sheet 21 and the second sheet 22 for clarity of description, but in actual use, the first sheet 21 and the second sheet 22 are substantially overlapped up and down without a gap. In addition, although an example of folding the vacuum sheet 2 in half from the folding portion 20 is shown, it is not limited to folding in half according to the size of the vacuum sheet 2.

[0070] Furthermore, users can Figure 7 The hand operation part 7 shown in the figure makes the suction mouth body 1 Figure 3 The suction device 100 moves forward and backward on the dust collection part F shown in the figure, sucks dust from the suction port 100, and wipes and cleans the dust collection part F with the held dust collection sheet 2.

[0071] The vacuum sheet 2 is in contact with the vacuumed portion F 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 hand operation portion 7 via the sheet holding portion 1020 and the pressing portion 1021 of the sheet support portion 102, thereby making it difficult for dust to enter between the vacuum sheet 2 and the lower portion of the suction port body 1, and the vacuumed portion F can be wiped and vacuumed stably over a large area. In addition, the front and rear portions of the vacuum sheet 2 are held by the sheet holding portion 1020, and the front end of the vacuum sheet 2 is held by the suction port 100 and the suction hole 105, so that the vacuum sheet 2 is firmly held on the suction port body 1 during the operation of the suction source 4. In particular, the user applies a greater force when the suction port body 1 is moved forward than when it is moved backward. Therefore, when the suction port body 1 is in use, the holding force of the dust suction sheet 2 at the front side of the suction port body 1 is stronger than the holding force of the dust suction sheet 2 at the rear side, thereby making it difficult for the dust suction sheet 2 to roll up, especially when the suction port body 1 is moved forward. Furthermore, the front end of the dust suction sheet 2 is adsorbed and held inside the suction port 100. Therefore, when the suction port body 1 is moved back and forth on the dust suction part F, the front end of the dust suction sheet 2 is difficult to be directly resisted by the dust suction part F, and the dust suction sheet 2 can be prevented from rolling up starting from the front end. In this embodiment, the suction hole 105 is arranged between the sheet holding part 1020 in the left-right direction. Therefore, even if the sheet holding part 1020 is not strongly attached and held, the dust suction sheet 2 can be firmly held by adsorption and holding with the suction hole 105. In particular, even when the dust collecting sheet 2 is a wet sheet or a general-purpose sheet, the dust collecting sheet 2 can be reliably held. Therefore, even when the suction port body 1 is moved forward and backward on the dust collecting portion F, the dust collecting sheet 2 is unlikely to be turned over due to resistance between the dust collecting portion F and the dust collecting portion F. In addition, since 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, the dust collecting sheet 2 can be held with good balance.

[0072] In addition, the suction port 100 extends from the front surface of the main body 10 of the suction port body 1 to the opening on the lower surface. Therefore, when the suction port body 1 is moved forward on the dust collection part F, even coarse dust such as cat litter, rice grains, etc. on the dust collection part F can be sucked in without being pushed forward. Even if the front part of the main body 10 of the suction port body 1 is brought into contact with the wall, the suction air path can be ensured, and the dust on the wall can be sucked in without being sandwiched between the suction port body 1 and the wall. Furthermore, since the suction port body 1 is moved forward and backward on the dust collection part F while performing dust collection, dust such as hair and coarse dust is easily attached to the front end of the dust collection sheet 2 in a concentrated manner. However, since the suction port 100 is made into a long strip in the left-right direction, the sheet support part 102, or the sheet holding part 1020 in this embodiment, is close to the rear part of the suction port 100 along the length direction of the suction port 100, the dust attached to the front end of the dust collection sheet 2 close to the rear part of the suction port 100 can also be sucked in, and the dirt on the front end of the dust collection sheet 2 can be suppressed from developing over time, and the front end can be kept clean. Furthermore, since the suction port 100 is formed corresponding to the substantially entire width of the sheet support part 102 for making the dust collection sheet 2 abut against the dust collection part F, the attachment of dust can be suppressed over the substantially entire width of the dust collection sheet 2. Therefore, the front end of the vacuum sheet 2 can be kept clean to wipe the vacuumed part F near the wall. In addition, the situation that the vacuum sheet 2 has to be replaced due to dirt on the front end without fully using the rear end of the vacuum sheet 2 can be eliminated, the entire vacuum sheet 2 can be effectively used, and the replacement frequency of the vacuum sheet 2 can be suppressed, so the number of replacement operations can be reduced and the waste of resources can be suppressed. Furthermore, when the suction port body 1 is retracted, even if the dust attached to the front end of the vacuum sheet 2 is peeled off from the vacuum sheet 2, it is immediately sucked from the suction port 100, so it is difficult for dust to remain on the vacuumed part F.

[0073] The dust sucked from the suction port 100 is attracted to the connecting pipe 11 by the negative pressure of the suction source 4 acting on the air path portion 101. At this time, the guide surface 1012 formed in a plane or curved shape throughout the rear end of the suction port 100 and the front end of the connecting pipe 11 guides 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 shape to add a rising component to the dust, thereby even relatively large solid dust such as cat litter and rice grains can be inclined along the guide surface 1012 in the air path portion 101 and attracted to the connecting pipe 11 smoothly and efficiently. That is, the air passage portion 101 does not generate a portion that sucks up the dust in the upward direction by forming the guide surface 1012, so that the suction port 100 does not generate a strong negative pressure, and even dust with a relatively large weight can be attracted to the connecting pipe 11, and it can be suppressed from being adsorbed to the suctioned part F due to the negative pressure of the suction port 100, so the operability of the suction port body 1 becomes lighter and the operability becomes better. The attracted dust is sucked from the connecting pipe 11 to the separation portion 5 and separated and captured from the air.

[0074] When removing the dirty dust sheet 2 from the suction port body 1, when the user operates the switch 8 to stop the action of the suction source 4, the negative pressure acting from the suction port 100 and the suction hole 105 disappears, thereby becoming a state where the dust sheet 2 is only lightly attached and held by the sheet holding portion 1020. Therefore, the dust sheet 2 can be easily removed from the sheet holding portion 1020, and it is not necessary to apply a large force to the dust sheet 2 during the removal, so the dust attached to the dust sheet 2 is difficult to peel off. In addition, in the case where the suction hole 105 is arranged between the sheet holding portions 1020, when the negative pressure acting on the suction hole 105 disappears, a portion of the dust sheet 2 that is not held by the suction port body 1 is generated between the sheet holding portions 1020 where the suction hole 105 is located, so the dust sheet 2 can be easily removed from the suction port body 1 starting from this portion.

[0075] In addition, for a large vacuum sheet 2, by folding it, one of the first sheet 21 and the second sheet 22 can be used separately for holding and the other for vacuuming. The holding portion is basically not in contact with the vacuumed portion F and will not get dirty. Therefore, in the case where the vacuuming portion is dirty, the vacuum sheet 2 can be temporarily removed from the suction port body 1, turned upside down and reinstalled on the suction port body 1, thereby using the clean portion used for holding as vacuuming. By further turning the front and back sides, a larger area of ​​the vacuum sheet 2 can be used without omission. In this case, for example, when the suction port body 1 is lifted and moved from the vacuumed portion F using the first sheet 21 for holding and the second sheet 22 for vacuuming, as shown in FIG. Figure 6As shown in (b), the second sheet 22 not directly held by the sheet holding portion 1020 of the suction port body 1 is in a state of hanging down from the folding portion 20 of the front end portion. Therefore, by moving the suction port body 1 in a manner of pressing against the suctioned portion F toward the front lower side, the hanging second sheet 22 is in a proper use state of being sandwiched between the first sheet 21 and the suctioned portion F in a state of being folded from the desired position of the folding portion 20. In this embodiment, the folding portion 20 is located at the front end portion of the suction sheet 2 held by the suction port body 1, so that it is more difficult to roll up when the suction port body 1 is moved forward.

[0076] (Second embodiment)

[0077] Next, refer to Figure 8 The second embodiment will be described. Note that the same components and functions as those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0078] In this embodiment, a plurality of suction holes 105 are provided. For example, the suction holes 105 include a first suction hole 1050 located between the sheet holding portions 1020 and a second suction hole 1051 located near or adjacent to the rear of the sheet holding portion 1020 along the longitudinal direction of the sheet holding portion 1020.

[0079] In the present embodiment, a first suction hole 1050 is set in the central part of the left-right direction of the lower part of the main body 10. In the example shown in the figure, the first suction hole 1050 is arranged between the left and right front sheet holding parts 10200. That is, the first suction hole 1050 and the front sheet holding part 1020 of the sheet holding part 1020 are arranged in the left-right direction, that is, in the longitudinal direction of the suction port 100. In addition, the first suction hole 1050 is located in front of the central part of the main body 10 in the front-back direction.

[0080] The second suction hole 1051 is formed in a strip shape longer in the left-right direction than the first suction hole 1050. Both sides of the second suction hole 1051 are arranged adjacent to the rear parts of the left and right sheet holding parts 1020. In the present embodiment, the second suction hole 1051 is located between the front sheet holding part 10200 and the pressing part 1021 in the front-back direction.

[0081] Furthermore, by placing the dust collecting sheet 2 on a flat setting position such as the dust collected portion F, the suction port 100 of the suction port body 1 is aligned with the front end of the dust collecting sheet 2 and the suction port body 1 is pressed against the dust collecting sheet 2 from above, thereby attaching and holding the dust collecting sheet 2 on the sheet holding portion 1020, and then, the suction source 4 is activated by operating the switch 8, thereby holding the dust collecting sheet 2 by adsorption using the negative pressure applied from the suction port 100 and the suction hole 105.

[0082] At this time, since a plurality of suction holes 105 are provided, the vacuum sheet 2 can be adsorbed by the negative pressure exerted from the plurality of suction holes 105, so that the vacuum sheet 2 can be more reliably held. This is especially effective for wet vacuum sheets 2 and other vacuum sheets 2 for which it is difficult to ensure the holding force of the sheet holding portion 1020.

[0083] (Third embodiment)

[0084] Next, refer to Fig. 9 The third embodiment will be described. Note that the same components and functions as those in the respective embodiments are denoted by the same reference numerals and their description will be omitted.

[0085] In this embodiment, the suction hole 105 is arranged side by side with 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 example shown in the figure, the suction hole 105 is formed in the central portion of the front sheet holding portion 10200 which is long in the left and right directions, that is, in the central portion in the left and right directions and in the front and rear directions. Therefore, the sheet holding portion 1020 is located at a position surrounding the suction hole 105.

[0086] In this way, by arranging the suction hole 105 and the sheet holding portion 1020 side by side, even if the sheet holding portion 1020 is not strongly attached and held, the vacuum sheet 2 can be firmly held by adding the adsorption holding of the suction hole 105, and the same effect as that of each embodiment can be achieved.

[0087] In addition, compared with the case where the sheet holding portion 1020 and the suction hole 105 are arranged at different positions, the sheet holding portion 1020 can be arranged in a larger range in the limited space below the suction port body 1 even without complicating the shape of the sheet holding portion 1020.

[0088] (Fourth embodiment)

[0089] Next, refer to Figures 10 to 12 The fourth embodiment will be described. Note that the same components and functions as those in the respective embodiments are denoted by the same reference numerals and their description will be omitted.

[0090] In the present embodiment, the sheet holding portion 1020 located at the rear portion of the main body 10 is arranged at the upper portion of the main body 10 .

[0091] For example, the rear sheet holding portion 10201 of the sheet holding portion 1020 is disposed at an upper portion near a rear end portion of a lower case body portion 1061 of the lower case 106 of the main body 10. The rear sheet holding portion 10201 is formed in a strip shape in the left-right direction.

[0092] After the connection pipe 11 of the suction port body 1 is connected to the extension pipe 6 or the vacuum cleaner body 3, the front end of the vacuum sheet 2 is aligned within the width of the suction port 100 of the suction port body 1 in the front-to-back direction, and the vacuum sheet 2 is installed in the sheet holding portion 1020. For example, Fig.12 As shown in (a), a vacuum sheet 2 is placed on a flat surface of the vacuumed portion F, etc., so that the front end of the vacuum sheet 2 is aligned within the width of the suction port 100 of the suction port body 1 in the front-to-back direction, as shown in FIG. Fig.12 As shown in (b), the suction port body 1 is pressed against the dust collection sheet 2 from above, that is, the dust collection sheet 2 is sandwiched between the suction port body 1 and the installation position, thereby attaching and holding the dust collection sheet 2 on the front sheet holding part 10200.

[0093] In this state, the rear end of the dust collection sheet 2 extending from the rear end of the main body 10 of the suction port body 1 is Fig.12 As shown in (c), it is folded back toward the upper part of the main body 10 and attached to and held by the rear sheet holding portion 10201.

[0094] Then, the suction source 4 is activated by operating the switch 8, thereby Fig.12 As shown in (d) , the front end of the dust collecting sheet 2 is sucked and held by the suction port 100 and the suction hole 105 by the negative pressure applied from the suction port 100 and the suction hole 105 .

[0095] Even when the dust collecting sheet 2 is folded and used, it can be attached in the same manner.

[0096] In this way, the sheet holding portion 1020 can be easily mounted on the suction port body 1. For example, even if the area of ​​the dust collection sheet 2 is larger than the area of ​​the main body 10 of the suction port body 1 when viewed from above, and a large amount of excess is generated at the rear end of the dust collection sheet 2, the rear end can be mounted on the suction port body 1 without being loose at the lower part of the suction port body 1. Therefore, dust collection sheets 2 of various sizes can be used. In particular, in the case where a further excess is generated compared to the portion attached and retained to the rear sheet holding portion 10201, the excess portion can be extended to the front of the rear sheet holding portion 10201 to a position below the connecting pipe 11, for example, below the first pipe portion 110, at the upper part of the main body 10. For example, by inserting the end of the dust collection sheet 2 into the narrow gap between the lower part of the first pipe portion 110 and the upper part of the lower shell body 1061, the holding force of the dust collection sheet 2 can be further improved.

[0097] The rear end portion of the dust collecting sheet 2 is folded back to the upper portion of the main body 10 and maintained at a position away from the dust collecting portion F. Therefore, when the suction port body 1 is moved backward on the dust collecting portion F, the resistance from the dust collecting portion F will not directly act on the rear end portion of the dust collecting sheet 2, thereby preventing the dust collecting sheet 2 from rolling up with the rear end portion as the starting point.

[0098] Furthermore, when removing the dust collecting sheet 2 from the suction port body 1, the rear end portion folded back on the dust collecting sheet 2 and not in direct contact with the dust collecting part F can be used as a starting point, so that it can be removed hygienically.

[0099] In addition, the rear sheet retaining portion 1020 is not limited to being arranged on the upper part of the main body 10. For example, even if it is arranged on the rear surface of the main body 10, the dust collection sheet 2 can be easily installed on the suction port body 1, and it can cope with dust collection sheets 2 of various sizes, etc., and can achieve the same effect as the fourth embodiment.

[0100] (Fifth embodiment)

[0101] Next, refer to Fig.13 The fifth embodiment will be described. Note that the same components and functions as those in the respective embodiments are denoted by the same reference numerals and their description will be omitted.

[0102] In the present embodiment, the sheet holding portion 1020 extends from the rear of the suction port 100 in the front-to-rear direction. In addition, the rear end of the sheet holding portion 1020 extends to the vicinity of the rear end of the main body 10. Furthermore, the sheet holding portion 1020 is arranged along the side of the lower part of the main body 10 at the rear of the left and right sides of the suction port 100.

[0103] In this manner, even if the sheet holding portion 1020 is configured to extend in the front-rear direction, the dust collection sheet 2 can be easily attached to the suction port body 1 or the like, and the same effects as those of the respective embodiments can be achieved.

[0104] In addition, since the left and right sheet holding parts 1020 extend in the front-back direction, the two side parts of the dust collecting sheet 2 can be attached and held in the range from the front to the rear by these sheet holding parts 1020. Therefore, the dust collecting sheet 2 can be attached and held by only one sheet holding part 1020 on each side, so it is not necessary to provide a large number of sheet holding parts 1020.

[0105] (Sixth embodiment)

[0106] Next, refer to Fig.14 The sixth embodiment will be described. Note that the same components and functions as those in the respective embodiments are denoted by the same reference numerals and description thereof will be omitted.

[0107] In this embodiment, the side of the suction port 100 is offset to the central part side in the left-right direction relative to the side of the main body 10, and each sheet holding part 1020 is arranged in this space. That is, the sheet holding part 1020 is arranged on the left and right outer sides of the suction port 100. In addition, at least a part of the sheet holding part 1020 extends from the side of the suction port 100 in the front-back direction.

[0108] The front end portion of each sheet holding portion 1020 is located at a position opposite to the side portion of the suction port 100 in the left-right direction. That is, the front end portion of each sheet holding portion 1020 is located at a position overlapping with the suction port 100 in the front-back direction. In addition, the rear end portion of the sheet holding portion 1020 extends to the vicinity of the rear end portion of the main body 10. In the present embodiment, each sheet holding portion 1020 is located along the side portion of the lower portion of the main body 10. That is, each sheet holding portion 1020 is located at the lower portion of the main body 10 of the suction port body 1, covering the portion between the side portion of the suction port 100 and the side portion of the main body 10.

[0109] The front end of the dust collecting sheet 2 is aligned within the width of the suction port 100 of the suction port body 1 in the front-rear direction and the dust collecting sheet 2 is mounted on the sheet holding portion 1020, etc., and the dust collecting sheet 2 is attached and held on the suction port body 1 in the same manner as in the respective embodiments.

[0110] Even if the front end of the dust collecting sheet 2 temporarily covers the suction port 100 while being attached and held by the sheet holding portion 1020 , it will be adsorbed and held inside the suction port 100 due to the negative pressure acting from the suction port 100 , so that the suction port 100 will not be blocked by the dust collecting sheet 2 .

[0111] In this way, even if the sheet holding part 1020 extends from both sides of the suction port 100 in the front-rear direction, the dust collection sheet 2 can be easily attached to the suction port body 1, etc., and the same effects as those of the embodiments can be achieved.

[0112] In addition, in the fifth and sixth embodiments, the sheet holding portion 1020 is not limited to being continuous in the front-rear direction, and a plurality of sheet holding portions 1020 may be disposed intermittently in the front-rear direction.

[0113] Furthermore, the respective embodiments can be arbitrarily combined within the scope that does not depart from the gist of the invention and does not contradict each other.

[0114] Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention to these embodiments. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and purpose of the invention, and are included in the invention described in the scope of the patent claim and the scope equivalent thereto.

Claims

1. A suction mouthpiece, characterized in that: have: Suction port; and The sheet support part is used to make the dust collecting sheet abut against the dust collecting part. The sheet supporting portion includes a sheet holding portion at a lower portion thereof. At least a portion of the sheet holding portion is disposed adjacent to or laterally of the suction port and is detachable from the dust collecting sheet.

2. The suction nozzle according to claim 1, characterized in that: The above-mentioned suction port is long and strip-shaped in the left-right direction. The sheet holding portion is located close to a rear portion of the suction port along a longitudinal direction of the suction port.

3. The suction nozzle according to claim 1, characterized in that: The sheet holding portion extends from left and right outer sides of the suction port in the front-rear direction.

4. The suction nozzle according to claim 1, characterized in that: The suction port is formed to correspond to substantially the entire width of the sheet supporting portion.

5. The suction nozzle according to claim 1, characterized in that: The above-mentioned suction port is long and strip-shaped in the left-right direction. The sheet support portion is located at a lower portion close to a rear portion of the suction port along a longitudinal direction of the suction port.

6. The suction nozzle according to claim 2 or 3, characterized in that: The suction port body includes a suction hole which is communicated with the suction source and opens at the bottom.

7. The suction nozzle according to claim 6, characterized in that: The sheet holding portion is provided with a plurality of The suction holes are provided between the plurality of sheet holding portions or are arranged in parallel with the sheet holding portions.

8. The suction nozzle according to claim 6, characterized in that: The suction hole is located in the center in the left-right direction.

9. The suction nozzle according to claim 1, characterized in that: In the use state, the holding force of the dust collecting sheet at the front side is stronger than the holding force of the dust collecting sheet at the rear side.

10. The suction nozzle according to claim 1, characterized in that: have: A connecting pipe, the upstream end of which is located behind the suction port, connecting the suction port with the suction source; and A flat or curved guide surface is formed to extend over the rear end of the suction port and the upstream end of the connecting pipe to guide dust.

11. An electric vacuum cleaner, characterized in that: A suction port according to any one of claims 1 to 5.

12. A method for installing a dust collecting sheet on a suction port, wherein the dust collecting sheet is installed on the suction port, characterized in that: Using the inhalation mouthpiece according to any one of claims 1 to 5, The dust collection sheet is attached to the sheet holding portion so that the front end portion of the dust collection sheet is aligned with the suction port of the suction port body.

13. The method for installing a dust collecting sheet for a suction port according to claim 12, characterized in that: The dust collection sheet folded from the folding portion is attached to the sheet holding portion with the folding portion as a leading end portion.

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