Suction inlet body and electric vacuum cleaner

Abstract

The invention provides a suction inlet body and an electric vacuum cleaner provided with the suction inlet body, wherein a cleaning sheet can be easily installed, and the installed cleaning sheet can be reliably kept in the cleaning action. A suction inlet body (1) is provided with: a suction inlet (100); a sheet support section (102) for bringing the cleaning sheet (2) into contact with the section to be cleaned; and a sheet attachment part (105) which is located at the upper part and on which the cleaning sheet (2) is attached. The sheet support section (102) has a long shape in the left-right direction. The suction inlet (100) is arranged at the lower part and is close to the front part of the sheet supporting part (102) along the length direction of the sheet supporting part (102). The sheet attachment section (105) holds a portion of the cleaning sheet (2) that covers a portion of the lower portion of the sheet support section (102) and that is folded upward from both left and right side portions of the sheet support section (102).

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 are known: a cleaning sheet such as a non-woven fabric is held in the suction port of the electric vacuum cleaner, and suction cleaning and wiping cleaning are performed simultaneously on the part to be cleaned such as the floor surface. In order to reliably hold the cleaning sheet so that it does not roll over or fall off when wiping the part to be cleaned, the cleaning sheet is mounted on the suction port by pressing its terminal end into a sheet mounting portion formed by a plurality of tongue pieces. If the sheet mounting portion contacts the part to be cleaned, the holding of the cleaning sheet may be released, causing the cleaning sheet to roll over. Therefore, the sheet mounting portion is arranged on the upper part of the main body of the suction port, so that the terminal end of the cleaning sheet wound on the main body is folded back from the front and rear ends of the main body to the upper part of the main body and is held on the sheet mounting portion. At this time, if the suction port is located in the front part of the suction port body, the suction port is covered by the cleaning sheet. Therefore, the nozzle portion having the air path portion connected to the suction port is formed separately from the suction port. When the cleaning sheet is rolled up, it is necessary to perform complicated operations such as temporarily avoiding the nozzle portion, then rolling up the cleaning sheet and keeping it on the sheet mounting portion, and returning the nozzle portion.

[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 easily attach a cleaning sheet and can reliably hold the attached cleaning sheet during cleaning operation, and an electric vacuum cleaner including the suction port body.

[0008] The suction port body of the embodiment comprises: a suction port; a sheet support portion for bringing a cleaning sheet into contact with a portion to be cleaned; and a sheet mounting portion, which is located at an upper portion and is used to mount the cleaning sheet. The sheet support portion is long in the left-right direction. The suction port is located at a lower portion and approaches the front portion of the sheet support portion along the length direction of the sheet support portion. The sheet mounting portion holds the portion of the cleaning sheet that covers a portion of the lower portion of the sheet support portion and is folded upward from the left and right side portions of the sheet support portion.

[0009] According to the above configuration, the cleaning sheet can be easily attached, and the attached cleaning sheet can be reliably held even during the cleaning operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a perspective view showing a suction port body according to one embodiment from above.

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

[0012] Figure 3 It is a longitudinal sectional side view showing the above-mentioned suction port body.

[0013] Figure 4 It is a three-dimensional cross-sectional view showing the above-mentioned suction port body.

[0014] Figure 5 This is a perspective view showing the process of aligning the suction port body and the cleaning sheet in the method of attaching the cleaning sheet to the suction port body.

[0015] Figure 6 This is a perspective view showing the step of attaching and holding the cleaning sheet to the suction port body in the method of attaching the cleaning sheet to the suction port body.

[0016] Figure 7 It is a perspective view showing an example of an electric vacuum cleaner including the above-mentioned suction port body.

[0017] Description of Reference Numerals

[0018] CL…Electric vacuum cleaner, F…Part to be cleaned, 1…Suction port body, 2…Cleaning sheet, 100…Suction port, 102…Sheet support portion, 105…Sheet mounting portion, 106…Suction hole, 107…Lower shell as a shell component, 1021…Pressing portion, 1050…Slit. DETAILED DESCRIPTION

[0019] Hereinafter, one embodiment will be described with reference to the drawings.

[0020] exist Figures 1 to 4In 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.

[0021] 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.

[0022] 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".

[0023] 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. The air passage portion 101 is formed in a non-bent shape that is inclined from the front end of the air inlet 100 toward the downstream side and toward the upper rear side. "Non-bent shape" includes a straight line shape, or a gently curved shape that does not have a portion bent at an angle below a right angle, etc. In the present embodiment, the air passage portion 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.

[0024] In addition, the main body 10 has a sheet support portion 102 for wiping and cleaning. The sheet support portion 102 is a portion for bringing the cleaning sheet 2 into contact with the cleaned portion F by utilizing the dead weight of the suction port body 1 or the main body 10, or by pressure applied from above by the user, and is preferably a portion for pressing the cleaning sheet 2 against the cleaned portion F to make it in 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 and 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.

[0025] At least a portion of the sheet support 102 is formed at the lower portion of the main body 10, and is located at the entire rear end portion of the main body 10 that reaches the rear of the suction port 100. For example, it is located at a position that is opposite to the suction port 100 over substantially 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.

[0026] Preferably, 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 such an extent that the cleaning sheet 2 can be easily removed. 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 hooks the fibers constituting the cleaning sheet 2 to hold the cleaning sheet 2. Not limited to this, as the sheet holding portion 1020, a hook component made of synthetic resin or the like formed integrally with the main body 10 may also be used, and a reusable adhesive component, such as an adhesive pad, may also be used.

[0027] 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.

[0028] In the present embodiment, the front sheet holding portion 10200 is at the lower part of the main body 10 and along the length direction of the suction port 100, and is close to the rear part of the suction port 100. A plurality of 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 pair of left and right, and is located at a position separated from each other in the left-right direction. In the illustrated example, the left side of the front sheet holding portion 10200 on the left side is located at the left side of the lower part of the main body 10, and is located in a position parallel to the left side of the suction port 100 in the front-back direction, and the right side of the front sheet holding portion 10200 is located at the right side of the lower part of the main body 10 on the right side, and is located in a position parallel to the right side of the suction port 100 in the front-back direction. In addition, each front sheet holding portion 10200 is long in the left-right direction, and is substantially a strip of constant width, and is located at a position substantially parallel to the suction port 100. The present invention is not limited thereto, and each front sheet retaining portion 10200 may be divided into a plurality of parts in the front-rear direction and / or the left-right direction.

[0029] The rear sheet holding portion 10201 is located at a position separated to the rear relative to the front sheet holding portion 10200. The rear sheet holding portion 10201 may be located at the lower portion of the main body 10, or at the upper portion, or at the upper portion and the lower portion respectively. In the illustrated example, the rear sheet holding portion 10201 is arranged along the rear end portion of the upper portion of the main body 10. The rear sheet holding portion 10201 is in the shape of an elongated strip and substantially in the shape of a strip of constant width in the left-right direction, and is continuously arranged as one in the left-right direction from the left side to the right side of the main body 10. That is, the left side of the rear sheet holding portion 10201 is located at the left side of the upper portion of the main body 10, and the right side of the rear sheet holding portion 10201 is located at the right side of the upper portion of the main body 10. It is not limited to this, and the rear sheet holding portion 10201 may be divided into a plurality of parts in the front-back and / or left-right directions.

[0030] In the present embodiment, the sheet holding portion 1020 is disposed in a holding portion mounting portion 103 that is recessed in the main body 10 and is substantially flush with the lower surface or the upper surface of the main body 10 .

[0031] 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 substantially occupies the entire portion other than the front sheet holding portion 10200 in the lower portion of the main body 10. That is, the pressing portion 1021 is formed in the lower portion of the main body 10 from the rear end portion of the front sheet holding portion 10200 to the rear end portion of the main body 10. The pressing portion 1021 is long and substantially in the shape of a band with a constant width in the left-right direction, and is located at a position substantially parallel to the suction port 100 and the sheet holding portion 1020 or the front sheet holding portion 10200. 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.

[0032] 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 direction and / or the left-right direction.

[0033] In the present embodiment, the pressing portion 1021 is mounted on a pressing portion mounting portion 104 that is recessed in the lower portion of the main body 10 and is substantially flush with the lower portion of the main body 10 .

[0034] In addition, a sheet mounting portion 105 for mounting and holding the cleaning sheet 2 is formed on the upper portion of the main body portion 10. The sheet mounting portion 105 can disassemble and assemble the cleaning sheet 2. The sheet mounting portion 105 holds the sheet support portion 102 of the cleaning sheet 2 that covers at least a part of the lower portion of the sheet support portion 102 or the folded-back portion 20 that is folded back upward from the left and right side portions of the main body portion 10. The sheet mounting portion 105 is located behind the front sheet holding portion 10200 and in front of the rear sheet holding portion 10201 in the front-rear direction. The sheet mounting portion 105 is disposed on the upper portion of the main body portion 10 or the suction port body 1. In the present embodiment, the sheet mounting portions 105 are respectively disposed, for example, close to the left and right side portions of the upper portion of the main body portion 10. In the illustrated example, a plurality of sheet mounting portions 105 are respectively set in the front-rear direction on the left and right side portions of the upper portion of the main body portion 10, for example, two are set side by side. The above-described sheet mounting portions 105 are located at separated positions in the front-rear direction.

[0035] The sheet mounting portion 105 only needs to be able to mount and hold the cleaning sheet 2 and can be of any structure. However, in the present embodiment, for example, it is configured to include holding pieces 1051 that are divided into a plurality of tongue-like shapes by a slit 1050. Moreover, it is configured such that a part of the folded-back portion 20 of the cleaning sheet 2 is pressed into the slit 1050 and clamped by the holding pieces 1051, whereby the sheet mounting portion 105 holds the folded-back portion 20.

[0036] In the present embodiment, the sheet mounting portion 105 is formed of a soft material. For example, the sheet mounting portion 105 is formed of the same material as the pressing portion 1021 of the sheet support portion 102. The sheet mounting portion 105 can be integrally formed with the sheet support portion 102 or can be formed separately. In this way, the sheet mounting portion 105 and the pressing portion 1021 are made of the same material, so that the sheet mounting portion 105 and the sheet support portion 102 can be integrally formed in one stroke by two-color molding or double molds, etc., and the manufacturability is improved.

[0037] In addition, as the sheet mounting portion 105, a component that can attach and hold the cleaning sheet 2 can be used, for example, a hook component of a hook-and-loop fastener that catches the fibers constituting the cleaning sheet 2 to hold the cleaning sheet 2.

[0038] Preferably, the suction hole 106 for adsorbing and holding the cleaning sheet 2 is open at the lower part of the main body 10. For example, the suction hole 106 is located behind the suction port 100. In the present embodiment, the suction hole 106 is located at the sheet support portion 102. The suction hole 106 is located in front of the sheet mounting portion 105. The suction hole 106 is set to be single or multiple. For example, the suction hole 106 is provided between a plurality of sheet holding portions 1020. In the present embodiment, one suction hole 106 is provided in the central portion in the left-right direction of the lower part of the main body 10. In the illustrated example, the suction hole 106 is arranged between the left and right front sheet holding portions 10200. That is, the suction hole 106 and the front sheet holding portion 10200 of the sheet holding portion 1020 are located: in a position parallel to each other in the left-right direction, that is, in the longitudinal direction of the suction port 100. Therefore, the suction hole 106 is located in front of the central portion in the front-back direction of the main body 10. In the present embodiment, the suction holes 106 are located at positions separated from the left and right front sheet holding portions 10200 , respectively, in the left-right direction.

[0039] The suction hole 106 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 106 is formed to penetrate the rear surface of the air path portion 101. The suction hole 106 is formed in a long strip shape in the left-right direction. The opening area of ​​the suction hole 106 is smaller than the suction port 100. For example, the suction hole 106 is opened into a slit shape whose left-right dimension and front-back dimension are smaller than the suction port 100.

[0040] 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.

[0041] The main body 10 is divided into a plurality of shell components. In the present embodiment, the main body 10 includes a lower shell 107 as one shell component and an upper shell 108 as another shell component covering a portion of the lower shell 107. The lower shell 107 and the upper shell 108 can be further divided into a plurality of components.

[0042] The lower shell 107 constitutes: a part of the air inlet 100 and a part of the air path portion 101. The lower shell 107 is formed of, for example, a hard synthetic resin. In addition, the lower shell 107 constitutes: more than half of the lower part of the main body 10. In this embodiment, the lower part of the lower shell 107 is formed with: a front sheet holding portion 10200 and a pressing portion 1021 of the sheet holding portion 1020 of the sheet supporting portion 102, and the upper part is formed with: a sheet mounting portion 105 and a rear sheet holding portion 10201 of the sheet holding portion 1020. In the example shown in the figure, the lower shell 107 is formed into a long strip in the left-right direction.

[0043] Regarding the lower housing 107, the front portion forms the rear portion of the air passage portion 101, and the middle portion to the rear portion are formed integrally with the sheet support portion 102 and the sheet mounting portion 105. For example, a through hole 1070 penetrating in the up-down direction is formed in the lower housing 107. The upper portion and the lower portion of the lower housing 107 are connected by the through hole 1070, and for example, the pressing portion 1021 of the sheet support portion 102 and the sheet mounting portion 105 can be integrally molded. That is, the lower housing 107, the pressing portion 1021, and the sheet mounting portion 105 can be integrally molded by two-color molding or double molds.

[0044] The upper housing 108 is composed of the remaining other parts of the air inlet 100 and the remaining other parts of the air passage 101. The upper housing 108 is formed of, for example, a hard synthetic resin. The upper housing 108 covers the upper part of the front part of the lower housing 107 and is fixed to the upper part of the lower housing 107. In the present embodiment, the upper housing 108 is formed in a strip shape in the left-right direction.

[0045] The connection pipe 11 is rotatably connected to a center portion of the lower case 107 in the left-right direction and a center portion of the upper case 108 in the left-right direction.

[0046] The connecting pipe 11 is used to connect the suction port 100 and the suction hole 106 to the suction source 4 (described later) by means of the air passage portion 101. Figure 7 Preferably, the connecting pipe 11 is 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 rotation axis directions intersect each other, and can change the angle relative to the main body 10 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, 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.

[0047] 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 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 that is larger than the left-right dimension of the sheet support portion 102 and can constitute the left-right dimension of the folding portion 20, and a front-to-back dimension that is larger than the front-to-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 in which a liquid such as water or a liquid medicine is infiltrated by the cleaning liquid of the cleaning portion F.

[0048] Moreover, 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 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 draws power from an external power source such as a commercial power supply.

[0049] Next, a cleaning operation according to one embodiment will be described.

[0050] 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 .

[0051] Next, the front end of the cleaning sheet 2 is aligned within the width of the suction port 100 of the suction port body 1 in the front-rear direction, and is mounted on the sheet holding portion 1020. As an example, Figure 5 As shown, the cleaning sheet 2 is placed on a flat setting position such as the part to be cleaned, and the front end of the cleaning 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 formed as the connecting pipe 11 is located further rearward than the center of gravity of the main body 10 of the suction port body 1, the front part of the main body 10 will rotate downward due to its own weight, and the front part of the main body 10 will be inclined in a manner close to the cleaning sheet 2, so that the suction port 100 located at the front of the main body 10 and the front end of the cleaning sheet 2 are easily aligned.

[0052] Moreover, if Figure 6 As shown, the suction port body 1 is pressed against the cleaning sheet 2 from above, that is, the cleaning sheet 2 is sandwiched between the suction port body 1 and the setting position, so that the cleaning sheet 2 is attached and held on the sheet holding portion 1020. In this embodiment, the front sheet holding portion 10200 ( Figure 3 The front part of the cleaning sheet 2 is attached and held. In addition, the installation method is not limited to placing the cleaning sheet 2 on the setting position and pressing the suction port body 1 from above. For example, the suction port body 1 may be placed on the setting position in such a way that the lower part faces upward, and the cleaning sheet 2 with the front end aligned within the width of the suction port 100 in the front-to-back direction is pressed against the sheet holding part 1020 to install the cleaning sheet 2. That is, as long as the sheet holding part 1020 and the cleaning sheet 2 are aligned in the front-to-back and left-to-right directions, and one side is pressed against the other side to assemble the sheet holding part 1020 and the cleaning sheet 2, it will be sufficient.

[0053] In this state, the left and right sides of the cleaning sheet 2 are exposed to the side more than the left and right sides of the main body 10 of the suction nozzle body 1. In addition, a part of the folded portion 20 folded upward by rolling up the exposed left and right sides of the main body 10 of the suction nozzle body 1 is as shown in FIG. Figure 1As shown in the figure, the cleaning sheet 2 is pressed into the slit 1050 of the sheet mounting portion 105, and is held by the retaining piece 1051, and the rear portion of the folding portion 20 is attached and held on the rear sheet holding portion 10201. In the case where a large amount of excess portion of the rear end portion of the cleaning sheet 2 is generated, the excess portion can be extended in advance to the front of the rear sheet holding portion 10201 to the position below the connecting pipe 11, for example, below the first pipe portion 110, at the upper portion of the main body 10. For example, the end of the cleaning sheet 2 is inserted into the narrow gap between the lower portion of the first pipe portion 110 and the upper portion of the lower shell 107 of the main body 10, so that the holding force of the cleaning sheet 2 can be further improved. With such a configuration, the cleaning sheet 2 can be easily mounted on the suction port body 1. That is, since the suction port 100 is located at the front of the suction port body 1, it is difficult to roll up the front end of the cleaning sheet 2 in a manner of folding back toward the upper part of the main body 10. At this time, the folding portion 20 is rolled up in a manner of folding back toward the upper part from the left and right sides of the main body 10 or the sheet supporting portion 102 that are constructed so as not to hinder the rolling of the cleaning sheet 2, and is held by the sheet mounting portion 105 located at the upper part, thereby making it possible to easily install the cleaning sheet 2 without the need for a complicated structure or tedious operations.

[0054] In this state, the suction source 4 ( Figure 7 The suction port 106 is configured to suck and hold the front end of the cleaning sheet 2 at the suction port 100 by using the negative pressure exerted from the suction port 100. The front end of the cleaning sheet 2 sucked at the suction port 100 covers, for example, the lower end of the rear surface of the air passage portion 102. In addition, the negative pressure exerted from the suction hole 106 sucks and holds the middle portion of the cleaning sheet 2 in the front-to-back direction.

[0055] Furthermore, users can use Figure 7 The manual operation part 7 shown in the figure makes the suction mouth body 1 Figure 3 The 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.

[0056] 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 larger area. In addition, the left and right side portions of the cleaning sheet 2 are folded back toward the upper portion of the main body 10 and are respectively held by the sheet mounting portion 105, and 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 is adsorbed and held by the suction hole 106, so that the cleaning sheet 2 is firmly and reliably held on the suction port body 1 during the period when the suction source 4 is in action, that is, during the cleaning action. 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, and the cleaning sheet 2 can be prevented from rolling up with the front end as the starting point. In particular, whether the cleaning sheet 2 is wet or universal, the cleaning sheet 2 can be reliably held. Therefore, even when the suction port body 1 is moved along the front-to-back 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, since the suction hole 106 is located in the center portion of the main body 10 of the suction port body 1 in the left-right direction, the cleaning sheet 2 can be held in a balanced manner.

[0057] In addition, the suction port 100 opens 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 to be cleaned F, even large dust such as cat litter and rice grains on the portion to be cleaned F 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 the wall surface, the suction air passage can be ensured, so that the dust at the corner of the wall can be sucked without being pinched by the suction port body 1 and the wall surface. Moreover, the suction port body 1 moves in the front-rear direction on the portion to be cleaned F for cleaning. Therefore, although dust such as hair or large dust easily accumulates on 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 front sheet holding portion 10200 of the sheet holding portion 1020 (in this embodiment) 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, thereby suppressing the accumulation of dirt on the front end portion of the cleaning sheet 2 over time and keeping the front end portion clean. Also, the sheet support portion 102 is used to bring the cleaning sheet 2 into contact with the portion to be cleaned F, 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. Thus, the front end portion of the cleaning sheet 2 maintained in a clean state can be used to always perform wiping cleaning up to the portion to be cleaned F at the corner of the wall. In addition, the following situation will not occur: having to replace the cleaning sheet 2 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. Moreover, 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 dust to remain on the portion to be cleaned F.

[0058] The dust sucked in from the suction port 100 is attracted to the connection pipe 11 due to the negative pressure of the suction source 4 acting on the air passage portion 101. At this time, since the air passage portion 101 connecting the suction port 100 and the front end portion of the connection pipe 11 is formed in a non-buckling shape, compared with the case where there is a portion that sucks the dust directly upward, the suction port 100 does not generate a strong negative pressure. Even relatively heavy dust can be smoothly attracted to the connection pipe 11, and the adsorption to the portion to be cleaned F due to the negative pressure of the suction port 100 is suppressed. Therefore, the operability of the suction port body 1 on the portion to be cleaned F is reduced, and the operability becomes good. The attracted dust is sucked from the connection pipe 11 into the separation portion 5, separated from the air, and captured.

[0059] When the soiled cleaning sheet 2 is removed from the suction port body 1, if the user operates the switch 8 to stop the operation of the suction source 4, the negative pressure generated from the suction port 100 and the suction hole 106 disappears, and the cleaning sheet 2 is only in the following state: the folding portion 20 is sandwiched in the sheet mounting portion 105 at the upper part of the main body 10 and is lightly attached to and held by the rear sheet holding portion 10201, and is lightly attached to and held by the front sheet holding portion 10200 at the lower part of the main body 10. Therefore, the folding portion 20 of the cleaning sheet 2 located at the upper part of the main body 10, that is, not in contact with the cleaned portion F, is removed from the sheet mounting portion 105, and is removed from the rear sheet holding portion 10201 and the front sheet holding portion 10200 starting from the folding portion 20, thereby making it possible to easily and hygienically remove the cleaning sheet 2 from the suction port body 1.

[0060] 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: suction port; a sheet support portion for bringing the cleaning sheet into contact with the portion to be cleaned; and a sheet mounting portion, which is located at the upper portion and is used to mount the cleaning sheet, The sheet support portion is long in the left-right direction. The suction port is located at the lower part, along the length direction of the sheet support portion and close to the front part of the sheet support portion, The sheet attachment portion holds a portion of the cleaning sheet that covers a portion of a lower portion of the sheet supporting portion and is folded upward from both left and right side portions of the sheet supporting portion.

2. The suction nozzle according to claim 1, characterized in that: The suction port body comprises: a shell member on which the sheet support portion is arranged, The sheet support portion has a pressing portion formed of a material softer than the shell member at the lower portion. The sheet attaching portion includes a slit for holding at least a portion of the inserted cleaning sheet, and the sheet attaching portion is formed of the soft material.

3. The suction nozzle according to claim 1, characterized in that: The suction port body includes a suction hole located in the front portion of the sheet support portion and communicating with a suction source.

4. The suction nozzle according to claim 1, characterized in that: The sheet material mounting portion is a Velcro fastener.

5. An electric vacuum cleaner, characterized in that: The electric vacuum cleaner includes the suction port body according to any one of claims 1 to 4.

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