Suction inlet body and electric vacuum cleaner

Abstract

The invention relates to a suction inlet body and an electric dust collector, which can effectively press an installed dust collection sheet on a dust collection part and have good operability. A suction port body (1) is provided with: a main body section (10) having a suction port (100) and having a long shape in the left-right direction; a connection pipe (11) communicating with the suction inlet; and a sheet support section (102) for bringing the dust collection sheet (2) into contact with the section (F) to be subjected to dust collection. The connection pipe has: a first pipe section (110) provided with a first rotation section capable of rotating with respect to the main body section about a first axis (A1) having the front-rear direction as the main direction component; and a second tube section (111) provided with a second rotation section (1110) capable of rotating with respect to the first tube section about a second axis (A2) along a direction orthogonal to the first axis (A1). The first rotating part and the second rotating part are located within a projection range (Z) above the sheet supporting part (102).

Description

Technical Field

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

[0002] In the past, it is known that a vacuum sheet such as a non-woven fabric is held in the suction port body of an electric vacuum cleaner, and suction and wiping of the vacuumed part such as the floor are performed simultaneously. The suction port body has: a main body having a suction port and a sheet support portion on which the vacuum sheet is mounted; and a connecting pipe rotatably connected relative to the main body. The connecting pipe is constructed by two pipe portions having shaft portions whose axes are orthogonal to each other, and is connected to an extension pipe and a vacuum cleaner body through the connecting pipe, thereby transmitting the vacuuming action of the user who holds the holding portion connected to the extension pipe and the vacuum cleaner body to the suction port body. For example, when at least one of the shaft portions of the connecting pipe is located at a position further back than the sheet support portion, it is difficult for the user to apply a pressing force to the vacuum sheet, and it is difficult to press the vacuum sheet against the vacuumed part to perform the operation. In addition, when the upstream tube portion of the connecting tube is connected to the long strip-shaped main body portion in a manner having an axis in the left-right direction, the main body portion tilts left-right following the left-right twisting movement at hand, and the side portion of the dust collection sheet easily floats from the dusted portion.

[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 nozzle body and an electric vacuum cleaner equipped with the suction nozzle body, which can effectively press a dust collection sheet to be attached to a dust collection portion and have good operability.

[0006] The suction port body of the embodiment comprises: a main body having a suction port and being long in the left-right direction; a connecting pipe connected to the suction port; and a sheet support portion for making the dust collection sheet abut against the dust collection portion. The connecting pipe comprises: a first pipe portion having a first rotating portion that can rotate relative to the main body with a first axis having the front-back direction as a main direction component as the center; and a second pipe portion having a second rotating portion that can rotate relative to the first pipe portion with a second axis along a direction orthogonal to the first axis as the center. The first rotating portion and the second rotating portion are located within the upper projection range of the sheet support portion.

[0007] Effects of the Invention

[0008] The first rotating part and the second rotating part are located within the upper projection range of the sheet supporting part, so the user's operating force presses the sheet supporting part against the dusted part, and the dust collecting sheet can be effectively pressed against the dusted part through the sheet holding part and the pressing part of the sheet supporting part, and the operability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a longitudinal sectional side view showing the suction port body of the first embodiment.

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

[0011] Figure 3 It is a cross-sectional top view of the above-mentioned suction port body.

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

[0013] Figure 5 It is a three-dimensional view showing the above-mentioned suction port body from above.

[0014] Figure 6 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 (c).

[0015] Figure 7 (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.

[0016] Figure 8 It is a perspective view showing an example of an electric vacuum cleaner including the above-mentioned suction port body.

[0017] Fig. 9 This is a perspective view showing the suction port body of the second embodiment from below.

[0018] Explanation of symbols

[0019] A1: first axis; A2: second axis; CL: electric vacuum cleaner; F: part to be vacuumed; G: center of gravity; Z: upper projection range; 1: suction port body; 2: vacuuming sheet; 10: main body; 11: connecting pipe; 100: suction port; 102: sheet supporting part; 110: first pipe part; 111: second pipe part; 1020: sheet holding part; 1100: first rotating part; 1110: second rotating part. DETAILED DESCRIPTION

[0020] (First embodiment)

[0021] Hereinafter, a first embodiment will be described with reference to the drawings.

[0022] exist Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In 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.

[0023] 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.

[0024] 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".

[0025] 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-curved shape that is inclined toward the upper rear side from the front end of the air inlet 100 toward the downstream side. "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, etc. In the present embodiment, the air passage portion 101 is straight from the front end of the air inlet 100 toward the front end of the connecting pipe 11.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] At least a portion of the sheet holding portion 1020 is arranged behind or to the 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 arranged behind the suction port 100. In the illustrated example, a plurality of sheet holding portions 1020 are set at the front and rear. For example, the sheet holding portion 1020 has a front sheet holding portion 10200 located along the rear portion of the suction port 100, and a rear sheet holding portion 10201 located along the rear end portion of the lower portion of the main body 10. The rear sheet holding portion 10201 is not limited to being arranged at the lower portion of the main body 10, and may be arranged at the upper portion of the main body 10, or may be arranged at the lower portion and the upper portion, respectively. In addition, the sheet holding portion 1020 may extend along the front-to-back direction, or may be dispersed in a plurality of locations, for example.

[0030] 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 .

[0031] 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.

[0032] 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.

[0033] 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 .

[0034] Preferably, a suction hole 105 for adsorbing and holding the dust collecting sheet 2 is opened at the lower portion of the main body 10. The number and position of the suction holes 105 can be set arbitrarily. For example, the suction holes 105 are located between the front sheet holding portion 10200 and the rear of the suction port 100. The suction holes 105 are connected to the suction source 4 ( Figure 8 In this embodiment, the suction hole 105 is connected to the air passage portion 101, and is connected to the suction source 4 ( Figure 8 shown) connected.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] A raised portion 1060 is formed at the front of the lower housing 106. The front surface of the raised portion 1060 forms a guide surface 1012 at the rear 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.

[0039] 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.

[0040] The upper housing 107 has a front surface portion 1070 , an upper surface portion 1071 , side surface portions 1072 , and a rear surface portion 1073 .

[0041] The back side, i.e., the rear side, of the front surface portion 1070 forms the front side 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 part in the left-right direction extends upward. When viewed from the front, the front surface portion 1070 is in a convex shape. The lower part of the front surface portion 1070 is located above the lower part of the lower housing 106.

[0042] The back side, i.e., the lower side, of the upper surface portion 1071 forms the top side 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.

[0043] 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.

[0044] 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.

[0045] Furthermore, the upper housing 107 is connected to the housing mounting portion 1074 ( Figure 3 as well as Figure 5 The housing mounting portion 1074 is, for example, formed into a cylindrical or 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 support portions 10710 and 1062.

[0046] 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 8The connecting pipe 11 is rotatably connected to the main body 10. In this embodiment, the connecting pipe 11 has a plurality of rotating parts whose rotation axis directions intersect each other, and the angle relative to the main body 10 can be changed in any direction.

[0047] For example, the connection pipe 11 includes a first pipe portion 110 and a second pipe portion 111. The first pipe portion 110 constitutes the upstream side of the connection pipe 11, and the second pipe portion 111 constitutes the downstream side of the connection pipe 11. The first pipe portion 110 and the second pipe portion 111 are connected to communicate with each other.

[0048] like Figures 1 to 3 As shown, the first tube portion 110 is formed into a cylindrical shape and is supported by a first rotating portion 1100 that can rotate relative to the main body 10 with the first axis A1 as the center. The first axis A1 is a main directional component in the front-to-back direction. That is, the axis A1 mainly has a vector component in the front-to-back direction and is along the front-to-back direction. That is, the first tube portion 110 can rotate in its circumferential direction or around the axis. Therefore, regardless of the rotation angle of the connecting tube 11 or the first tube portion 110, the relative position of the first rotating portion 1100 relative to the front-to-back direction, the up-down direction, and the left-to-right direction of the main body 10 remains unchanged. In addition, with respect to the axis A1, it can be horizontal, for example, it can also be inclined upward toward the rear. That is, the main directional component in the front-to-back direction means that the front-to-back direction is the largest component, and it does not exclude the presence of components in the up-to-down direction and components in the left-to-right direction in a smaller amount than the front-to-back direction.

[0049] The upstream end portion, i.e., the front end portion 1101, of the first pipe portion 110 forms the upstream end portion of the connecting pipe 11, and is formed into a cylindrical shape that is shorter in the front-to-rear direction, i.e., in the axial direction, and is inserted between the connecting pipe supporting portions 10710 and 1062 of the main body 10, i.e., inside the main body 10. In the present embodiment, the first rotating portion 1100 is located at the front end portion 1101. When the first pipe portion 110 rotates relative to the main body 10, the outer peripheral surface of the front end portion 1101 is in sliding contact with the inner peripheral surface of the connecting pipe supporting portions 10710 and 1062 of the main body 10. In addition, the rear end portion and the upper end portion of the guide surface 1012 of the air passage portion 101 of the main body 10 extend upward relative to the lower portion of the front end portion 1101 of the first pipe portion 110.

[0050] The downstream end of the first pipe 110, that is, the rear end 1102 is formed in a cylindrical shape enlarged relative to the front end 1101 and exposed to the outside of the body 10. In this embodiment, the rear end 1102 of the first pipe 110 is separately located above the lower housing body 1061 of the lower housing 106.

[0051] The first rotating part 1100 is formed on the outer peripheral surface of the front end portion 1101 of the first tube portion 110 along the circumferential direction. The first rotating part 1100 is supported by the first rotating bearing part 108 so as to be rotatable, and the first rotating bearing part 108 is formed inside the connecting tube supporting parts 10710 and 1062 of the main body 10 along the circumferential direction. At least a part of either the first rotating part 1100 or the first rotating bearing part 108 is a protrusion, and at least a part of the other is a groove. In this embodiment, the first rotating part 1100 is a groove, and the first rotating bearing part 108 is a protrusion, and they are fitted with each other. In the example shown in the figure, the first rotating part 1100 is located in front of the center of the main body 10 in the front-back direction.

[0052] The second tube 111 is formed in a cylindrical shape and is supported via a second rotating part 1110, which can rotate relative to the first tube 110 around a second axis A2 substantially perpendicular to the first axis A1. Therefore, regardless of the rotation angle of the connecting tube 11 or the first tube 110 and the second tube 111, the relative position of the second rotating part 1110 in the front-rear direction relative to the main body 10 remains substantially unchanged. In addition, the axial direction being substantially "perpendicular" means that the vectors of the axial direction are substantially perpendicular, and it is not necessary for the axes A1 and A2 to intersect each other on the same plane.

[0053] The outer circumference of the front end portion 1111, which is the upstream end portion of the second tube portion 111, is formed into a cylindrical surface shape and is inserted into the rear portion of the first tube portion 110. In this embodiment, the second rotating portion 1110 is located at the front end portion 1111. When the second tube portion 111 rotates relative to the first tube portion 110, the outer circumferential surface of the front end portion 1111 is in sliding contact with the inner circumferential surface of the first tube portion 110.

[0054] The second rotating part 1110 is formed on both left and right side surfaces of the front end 1111 of the second tube 111 in a cylindrical shape protruding along the axial direction of the front end 1111. The second rotating part 1110 is supported by the second rotation bearing part formed inside the first tube 110 so as to be rotatable. That is, the second rotating part 1110 is located at a position separated from the first rotating part 1100 in the rear. In addition, the second axis A2 is located at a position overlapping with the first axis A1 in the vertical direction, and in this embodiment, it is located at a position where the first axis A1 and the second axis A2 intersect. At least a part of either the second rotating part 1110 or the second rotation bearing part is a shaft part or a protruding part, and at least a part of the other is a hole part or a recessed part. In this embodiment, the second rotating part 1110 is a cylindrical shaft part, and the second rotation bearing part is a cylindrical recessed part that fits with each other. In the example shown in the figure, the second rotating part 1110 is located at a position further back than the central part of the main body 10 in the front-back direction.

[0055] Furthermore, the rear end portion 1112 , which is a downstream end portion of the second pipe portion 111 , is formed in a tubular shape extending in a direction intersecting or orthogonal to the axial direction of the front end portion 1111 .

[0056] Furthermore, the first rotating part 1100 and the second rotating part 1110 are located within the upper projection range Z of the sheet support part 102 of the main body 10. The upper projection range Z of the sheet support part 102 is a range surrounded by an imaginary plane extending the outer contour of the sheet support part 102 vertically upward in a state where the suction port body 1 is provided at a horizontal setting position of the dust collecting part F, etc. In this embodiment, it is a range between the left and right side parts of the main body 10 from the rear end of the suction port 100 to the rear end of the main body 10. In addition, the upper projection range Z also includes the boundary of the upper projection range Z. In the example shown in the figure, the first rotating part 1100 and the second rotating part 1110 are located within the upper projection range Z of the pressing part 1021 in the upper projection range Z of the sheet support part 102, and are located between the front sheet holding part 10200 and the rear sheet holding part 10201 of the sheet holding part 1020 in the front-back direction.

[0057] In this embodiment, the entire rotation range of the first rotating part 1100 and the second rotating part 1110, the connecting tube 11, or the first tube 110 and the second tube 111 is located within the upper projection range Z of the sheet support part 102 of the main body 10. That is, regardless of the rotation angle of the connecting tube 11 or the first tube 110 and the second tube 111, the first rotating part 1100 and the second rotating part 1110 are always located within the upper projection range Z of the sheet support part 102 of the main body 10.

[0058] In the example shown in the figure, at least the first tube portion 110 of the connecting tube 11 is entirely located within the upper projection range Z of the sheet support portion 102. In addition, with respect to the second tube portion 111, at least the front end portion 1111 formed with the first rotating portion 1110 is located within the upper projection range Z of the sheet support portion 102, and in the present embodiment, at least the portion of the rear end portion 1112 to the side of the front end portion 1111 is located within the upper projection range Z of the sheet support portion 102. The portion on the rear end side of the rear end portion 1112 may be always entirely located within the upper projection range Z of the sheet support portion 102, or may be configured to be located outside the upper projection range Z depending on the rotation angle of the second tube portion 111 relative to the first tube portion 110.

[0059] Furthermore, at least the second axis A2 is located at a position rearward of the position of the center of gravity G of the main body 10. In the example shown in the figure, the second rotating part 1110 is located as a whole at a position rearward of the position of the center of gravity G of the main body 10. In the present embodiment, the position of the center of gravity G of the main body 10 is, for example, near the connecting tube support parts 10710, 1062 in the front-to-back direction. In the example shown in the figure, the center of gravity G of the main body 10 is on the inner side of the first tube part 110 of the connecting tube 11. In addition, in the figure, the center of gravity G of the main body 10 is located on the first axis A1 or at a height substantially equal to the first axis A1, but it is not limited to this. As long as it is at least in front of the second rotating part 1110, its position in the up-down direction and the left-right direction is not limited.

[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 8 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 1As 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 6 An example of the installation method when the dust collecting sheet 2 is small and not folded for use is shown in FIG. Figure 6 As shown in (a), the vacuum sheet 2 is placed on a flat setting position of the vacuumed part 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. At this time, the second axis A2 of the connecting pipe 11 is located at a position rearward of the center of gravity G of the main body 10 of the suction port body 1, so that the front part of the main body 10 rotates downward around the second axis A1 due to its own weight, and the front part of the main body 10 is tilted in a manner close to the vacuum sheet 2, so it is easy to align the suction port 100 located in the front part of the main body 10 with the front end of the vacuum sheet 2.

[0067] And, if Figure 6As 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 setting position and pressing the suction port body 1 from above. For example, the suction port body 1 can be placed on the setting position in a manner that the lower part faces upward, and the dust collection sheet 2 with the front end aligned to the width of the suction port 100 in the front-to-back direction is pressed on the sheet holding part 1020 to install the dust collection sheet 2. That is, the sheet holding part 1020 and the dust collection sheet 2 can be installed by aligning the front and back left and right sides with each other and pressing one side relative to the other. In addition, in the case where a large excess portion is generated at the rear end of the dust collection sheet 2, the excess portion can also be folded back to the upper part of the main body 10, for example, inserted between the main body 10 and the connecting pipe 11 for retention.

[0068] In this state, the suction source 4 ( Figure 8 As shown) action, Figure 6 As shown in (c), the front end of the dust collecting 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 dust collecting sheet 2 adsorbed to the suction port 100 covers, for example, the lower end of the guide surface 1012 of the air passage portion 101. In addition, the middle portion of the dust collecting 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 7In 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 rear 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 overlap up and down substantially 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 depending on the size of the vacuum sheet 2.

[0070] Furthermore, users can Figure 8 The hand operation part 7 shown in the figure makes the suction mouth body 1 Figure 1 The suction port 100 moves forward and backward on the dust-collected part F shown in the figure, sucking dust from the suction port 100 while wiping and cleaning the dust-collected part F through the held dust-collecting sheet 2. In the suction port body 1, since the first rotating part 1100 and the second rotating part 111, which are the rotation starting points of the connecting pipe 11, are located within the upper projection range Z of the sheet support part 102, the operating force applied by the user to the hand-held operating part 7 acts as a force to press the sheet support part 102 against the dust-collected part F, and the dust-collecting sheet 2 can be effectively pressed against the dust-collected part F through the sheet holding part 1020 and the pressing part 1021 of the sheet support part 102 to wipe and clean the dust.

[0071] For example, when the user moves the hand-operated part 7 forward and backward in order to move the suction port body 1 forward and backward, the angle formed by the hand-operated part 7 or the extension tube 6 relative to the dusted part F changes. In addition, when inserting the suction port body 1 into the dusted part F under the bed or the dusted part F at a lower height above, the hand-operated part 7 is sometimes moved downward to approach the dusted part F while twisting the hand-operated part 7 left and right. At this time, in response to the forward and backward, up and down movement of the hand-operated part 7, the second tube portion 111 of the connecting tube 11 of the suction port body 1 rotates up and down relative to the first tube portion 110 about the second axis A2 to follow the change in angle. In addition, in response to the left and right twisting of the hand-operated part 7, the first tube portion 110 of the connecting tube 11 of the suction port body 1 rotates left and right relative to the main body 10 about the first axis A1 to follow the twisting. In this embodiment, since the first rotating part 1100 and the second rotating part 1110, which are the rotation starting points of the connection pipe 11, are located within the upper projection range Z of the sheet support part 102, the operating force applied by the user to the hand operation part 7 acts as a force to press the sheet support part 102 against the dust collection part F and is transmitted to the first rotating part 1100 and the second rotating part 1110, and the first pipe part 110 and the second pipe part 111 of the connection pipe 11 smoothly rotate around the first axis A1 and the second axis A2. Therefore, even if the user moves the hand operation part 7 in any direction, the connection pipe 11 will follow the rotation of these first pipe parts 110 and the second pipe parts 111, and can maintain the state in which the lower part of the suction port body 1, that is, the dust collection sheet 2 is fully pressed against the dust collection part F through the sheet support part 102. In addition, the user can smoothly perform twisting movements and the like, and the operability is good. For example, the user can slide the main body 10 of the suction nozzle 1 to the left and right while pressing the front part of the main body 10 against the wall surface.

[0072] 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, so that 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, so that 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 directly receive resistance from the dust suction part F, and the dust suction sheet 2 can be prevented from rolling up with the front end as the starting point.

[0073] 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.

[0074] The dust sucked from the suction port 100 is sucked into the connection pipe 11 by the negative pressure of the suction source 4 acting on the air passage portion 101. The sucked dust is sucked from the connection pipe 11 into the separation portion 5, and is separated and captured from the air.

[0075] 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.

[0076] 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 7 As shown in (b), the second sheet portion 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 rear end portion. At this time, in the suction port body 1, the second axis A2 of the connecting pipe 11 is located at a position rearward of the center of gravity G of the main body 10 of the suction port body 1, so that the front part of the main body 10 rotates downward around the second axis A1 due to its own weight, and the front part of the main body 10 is inclined in a manner close to the vacuum sheet 2. Therefore, by moving the suction port body 1 directly to the lower rear side to press on the vacuumed portion F, the second sheet portion 22 hanging down is in a proper use state in which it is sandwiched between the first sheet portion 21 and the vacuumed portion F in a state of being folded from the desired position of the folding portion 20. In addition, even if the suction port body 1 is not lifted upward from the vacuumed portion F to a large extent, the second sheet portion 22 of the vacuum sheet 2 can be separated from the vacuumed portion F.

[0077] (Second embodiment)

[0078] Next, refer to Fig. 9The second 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.

[0079] In the present embodiment, the sheet holding portion 1020 is located at the side of the suction port 100. In the illustrated example, the side of the suction port 100 is offset toward the central portion in the left-right direction relative to the side of the main body 10, and each sheet holding portion 1020 is arranged in this space. That is, the sheet holding portion 1020 is arranged on the left and right outer sides of the suction port 100, respectively. Furthermore, at least a portion of the sheet holding portion 1020 extends from the side of the suction port 100 in the front-rear direction.

[0080] 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.

[0081] 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.

[0082] 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 .

[0083] In this way, even if the sheet holding portion 1020 extends from the left and right sides of the suction port 100 in the front-to-back direction, the installed vacuum sheet 2 can be effectively pressed against the vacuumed portion F, and the operability is good, etc., which can achieve the same effect as the first embodiment.

[0084] In the second embodiment, 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.

[0085] In addition, in each embodiment, the connecting pipe 11 may also be, for example, a joint portion having a spherical outer surface at the upstream end side, and connected to the main body 10 via the joint portion in a manner that allows rotation in any direction. In this case, by making the rotation center of the joint portion within the upper projection range Z of the sheet support portion 102, the installed dust collection sheet 2 can be effectively pressed against the dust collection portion F, and the operability is good, etc., and the same effects as the above-mentioned embodiment can be achieved.

[0086] 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.

[0087] 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: The main body has a suction port and is long and narrow in the left-right direction; a connecting pipe connected to the suction port; and The sheet support part is used to make the dust collecting sheet abut against the dust collecting part. The connecting pipe has: The first pipe portion includes a first rotating portion that can rotate relative to the main body portion around a first axis having a front-rear direction as a main direction component; and The second pipe part includes a second rotating part that can rotate relative to the first pipe part around a second axis in a direction perpendicular to the first axis. The first rotating portion and the second rotating portion are located within an upper projection range of the sheet supporting portion.

2. The suction nozzle according to claim 1, characterized in that: The sheet support portion is long in the left-right direction. The suction port is formed at a front portion of the main body portion so as to correspond to a longitudinal direction of the sheet supporting portion.

3. The suction nozzle according to claim 2, characterized in that: The suction port is formed on the front surface of the main body.

4. The suction nozzle according to claim 2, characterized in that: The suction port is opened from the front surface to the lower surface of the main body.

5. The suction nozzle according to claim 1, characterized in that: The suction port body includes a sheet holding portion that is disposed at a rear portion or a side portion of the suction port at a lower portion of the main body and that allows the dust collection sheet to be detachably mounted thereon.

6. The suction nozzle according to claim 1, characterized in that: The second axis is located rearward of the center of gravity of the main body.

7. An electric vacuum cleaner, characterized in that: A suction port according to any one of claims 1 to 6.

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