CN112867425B

CN112867425B - Cleaning head for cleaning tool, cleaning tool provided with the cleaning head, method for using cleaning sheet in the cleaning tool, and cleaning sheet for the cleaning tool

Info

Publication number: CN112867425B
Application number: CN201980067956.4A
Authority: CN
Inventors: 须田朋和; 真锅优佳; 釰持泰彦
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2018-11-09
Filing date: 2019-07-30
Publication date: 2023-02-03
Anticipated expiration: 2039-07-30
Also published as: TW202017526A; CN112867425A; WO2020095487A1; JP2020075060A; TWI703952B

Abstract

The present disclosure provides a cleaning head for a cleaning tool, in which a cleaning sheet is not easily detached from the cleaning head. The cleaning head of the present disclosure has the following structure. The cleaning head (3) is a cleaning head (3) for a cleaning tool (1) capable of holding a cleaning sheet (31), and is characterized in that the cleaning head (3) has a plate-like shape including a first cleaning surface (113) and a second cleaning surface (115), and has a longitudinal direction (L), a short-side direction (S), and a thickness direction (T) that are orthogonal to each other, the cleaning head (3) is provided with a clamping section (123) that clamps at least one of one end (33) and the other end (35) of the cleaning sheet (31), and the clamping section (123) is configured so as to be capable of taking an expanded form and a closed form.

Description

Cleaning head for cleaning tool, cleaning tool provided with the cleaning head, method for using cleaning sheet in the cleaning tool, and cleaning sheet for the cleaning tool

Technical Field

The present disclosure relates to a cleaning head for a cleaning tool, a cleaning tool provided with the cleaning head, a method of using a cleaning sheet for the cleaning tool, and a cleaning sheet for the cleaning tool.

Background

There is known a cleaning tool of a type in which a cleaning sheet is attached to a cleaning head.

For example, patent document 1 discloses a cleaning tool 20, the cleaning tool 20 including: a cleaning cloth 10; a substantially box-shaped main body 22 capable of holding the cleaning cloth 10, the main body 22 having cleaning parts 24, 25 capable of surface contact with the surface to be cleaned; and a support arm 23 that pivotally supports the main body 22 so as to be rotatable.

In patent document 1, as described in paragraph [0015] thereof, the cleaning cloth 10 is wound around the body 22 and is held by a groove-like holding portion 26 provided between the cleaning portions 24 and 25 and press-fitted at both longitudinal end edges thereof.

Further, patent document 2 discloses a cleaning tool, which is characterized by comprising: a main body having a slit for holding the cleaning sheet; a support arm which rotatably supports the main body and is formed into a shape like a letter \12467; and a handle connected to an end of the support arm via a universal joint.

As described in paragraph [0014] of patent document 1, the cleaning tool a shown in fig. 1 of patent document 2 is configured by: a main body 1 formed with a slit for holding the cleaning sheet S; a support arm 2 which rotatably supports the main body and is formed in a substantially v-shaped 12467; and a handle 4 connected to an end of the support arm 2 via a universal joint 3.

Further, in paragraph [0020] of patent document 2, "as shown in fig. 6, a state is described in which the cleaning sheet S is attached to the cover portion 20 to which the slit body 23 is attached. The cleaning sheet S can be simply held in the slit in a moire-like shape without causing finger pain as in a zigzag slit, by merely pressing the cleaning sheet S into the slit 23c with a fingertip or the like, so that the cleaning sheet S can be held in the slit 23 c.

Documents of the prior art

Patent literature

Patent document 1: japanese laid-open patent publication No. 9-164110

Patent document 2: japanese Utility model registration No. 3152632

Disclosure of Invention

Problems to be solved by the invention

In the cleaning tool 20 described in patent document 1, since the cleaning cloth 10 is wound around the main body 22 and both longitudinal end edges are press-fitted into the groove-like holding portion 26 provided between the cleaning portions 24 and 25 to be held, both ends of the cleaning cloth 10 are easily detached from the holding portion 26 and the cleaning cloth 10 is easily detached from the main body 22 when the surface to be cleaned is cleaned using both cleaning surfaces of the cleaning portions 24 and 25.

In the cleaning tool a described in patent document 2, since the cleaning sheet S is held by being sandwiched in the slit 23c disposed on the outer surface of the cover portion 20 of the main body 1, both ends of the cleaning sheet S are easily detached from the slit 23c and the cleaning sheet S is easily detached from the main body 1 when the cleaning tool a is used to clean the surface to be cleaned.

Accordingly, an object of the present disclosure is to provide a cleaning head for a cleaning tool in which a cleaning sheet is not easily detached from the cleaning head.

Means for solving the problems

The present inventors have invented a cleaning head for a cleaning tool capable of holding a cleaning sheet, the cleaning head having a plate-like shape including a first cleaning surface and a second cleaning surface and having a longitudinal direction, a short-side direction, and a thickness direction orthogonal to each other, the cleaning head including a clamping portion configured to clamp at least one of one end and the other end of the cleaning sheet, the clamping portion being configured to be capable of taking an expanded form and a closed form.

ADVANTAGEOUS EFFECTS OF INVENTION

The cleaning sheet of the cleaning head for the cleaning tool is not easy to fall off from the cleaning head.

Drawings

Fig. 1 is a perspective view of a cleaning tool 1 according to a first embodiment.

Fig. 2 is a perspective view of the cleaning head 3.

Fig. 3 is a front view of cleaning tool 1 in the narrow space cleaning mode.

Fig. 4 is a rear view of cleaning tool 1 in the narrow space cleaning mode.

Fig. 5 is an expanded view of the first inner surface 129 and the second inner surface 139 side of the cleaning head 3 in the expanded configuration.

Figure 6 is a cross-sectional view of section VI-VI of figure 5 of the cleaning head 3.

Fig. 7 is an expanded view of the first outer surface 127 and the second outer surface 137 side of the cleaning head 3 in the expanded configuration.

Fig. 8 is a perspective view of the bracket 5.

Fig. 9 is a diagram for explaining a method of attaching the cleaning sheet 31 to the cleaning head 3.

Fig. 10 is a diagram for explaining a method of attaching the cleaning sheet 31 to the cleaning head 3.

Fig. 11 is a diagram for explaining a method of attaching the cleaning sheet 31 to the cleaning head 3.

Fig. 12 is a diagram for explaining the cleaning tool 1 in the wide space cleaning method.

Fig. 13 is a diagram for explaining the cleaning tool 1 in the narrow space cleaning method.

Fig. 14 is a perspective view of the cleaning tool 1 according to the second embodiment.

Fig. 15 is a cross-sectional view of the cleaning tool 1 taken along the line XV-XV in fig. 14.

Fig. 16 is a diagram for explaining the cleaning tool 1 of the third embodiment.

Detailed Description

[ definitions ]

Closed configuration and open configuration in relation to the clamping portion "

In the present specification, the "closed state" relating to the nip portion means a state in which the nip portion is closed when the cleaning head includes the nip portion. In addition, in the case where the clamping portion includes the first clamping portion and the second clamping portion having the rotating end and the open/close end, the "closed state" relating to the clamping portion refers to a state in which the open/close end is closed.

In the present specification, the "deployed state" relating to the nip portion refers to a state in which the nip portion is opened when the cleaning head includes the nip portion. In the case where the holding section includes the first holding section and the second holding section each having the rotating end and the opening/closing end, the "developed state" relating to the holding section refers to a state in which the opening/closing end is not closed, and in particular, refers to a state in which a portion constituting the opening/closing end of the first holding section and a portion constituting the opening/closing end of the second holding section are located at the farthest positions.

In the closed state and the open state, the clamping portion may or may not clamp the cleaning sheet.

Narrow space and wide space "

In this specification, a narrow space is sometimes referred to as a "narrow space", a space that extends in a direction along the vertical direction and is narrow in a direction along the horizontal direction is sometimes referred to as a "vertical-direction narrow space", and a space that extends in a direction along the horizontal direction and is narrow in a direction along the vertical direction is sometimes referred to as a "horizontal-direction narrow space". In addition, a surface constituting a narrow space may be referred to as a "surface to be cleaned", and a portion where two surfaces to be cleaned extending in different directions intersect may be referred to as a "corner portion".

Examples of the surface to be cleaned include a wall, a floor surface, a top surface, a side surface, and a bottom surface of furniture, and a top surface, a side surface, and a bottom surface of an electric appliance.

In the present specification, a wide space is sometimes referred to as a "wide space".

Relative to the object "in a defined direction"

In the present specification, the phrase "along a predetermined direction" with respect to an object means that the object extends in a direction closer to the predetermined direction than an orthogonal direction orthogonal to the predetermined direction, and specifically means that the object extends so as to have an intersection angle of preferably less than 45 °, more preferably 30 ° or less, further preferably 20 ° or less, and further preferably 5 ° or less with respect to the predetermined direction.

In the present specification, when the intersection angle is 5 ° or less, the term "parallel to the predetermined direction" may be used.

Examples of the predetermined direction include a horizontal direction, a vertical direction, a planar direction, a longitudinal direction, a short-side direction, and a thickness direction.

For example, the surface to be cleaned as the object extends "along the vertical direction" so as to have an intersection angle of preferably less than 45 °, more preferably 30 ° or less, further preferably 20 ° or less, and further preferably 5 ° or less with the vertical direction.

"along a prescribed line" relating to the object "

In the present specification, the phrase "along a predetermined line" with respect to an object means that the object extends in a direction closer to the predetermined line than an orthogonal direction orthogonal to the predetermined line, and specifically means that the object extends so as to have an intersection angle with the predetermined line of preferably less than 45 °, more preferably 30 ° or less, further preferably 20 ° or less, and further preferably 5 ° or less.

In the present specification, when the crossing angle is 5 ° or less, the crossing angle is sometimes referred to as "parallel to a predetermined line".

Examples of the predetermined line include a shaft, such as a cleaning head rotating shaft, a clamping portion rotating shaft, and a handle rotating shaft.

For example, the weight as the object "along the cleaning head rotation axis" means that the weight extends so as to have an intersection angle of preferably less than 45 °, more preferably 30 ° or less, further preferably 20 ° or less, and further preferably 5 ° or less with the cleaning head rotation axis.

"horizontal cleanability" and "vertical cleanability"

In the present specification, "horizontal direction cleaning performance" refers to cleaning performance of a surface to be cleaned extending in a direction along the horizontal direction, and "vertical direction cleaning performance" refers to cleaning performance of a surface to be cleaned extending in a direction along the vertical direction.

Cleaning property for narrow space "

In the present specification, "narrow space cleanability" refers to cleanability of a surface to be cleaned constituting a narrow space. In the present specification, the cleanability of the surface to be cleaned constituting the vertical direction narrow space and the horizontal direction narrow space is referred to as "vertical direction narrow space cleanability" and "horizontal direction narrow space cleanability", respectively.

Cleaning surface switching property "

In the present specification, "cleaning surface switchability" refers to switchability of the cleaning surface (from the first cleaning surface to the second cleaning surface, or from the second cleaning surface to the first cleaning surface).

Cleaning tool-related "narrow space cleaning method" and "wide space cleaning method"

In the present specification, the "narrow space cleaning method" relating to the cleaning tool refers to a method for cleaning a narrow space using the cleaning tool, and refers to a method in which the cleaning head, the carriage, and the cleaning tool handle are held so that the plane direction of the cleaning head, the imaginary plane of the carriage, and the axis of the handle are parallel (preferably, on the same plane). In addition, a case where the cleaning head and the carriage are held so that the plane direction of the cleaning head and the carriage virtual surface are parallel (preferably, on the same plane) may be referred to as a case where the plane direction of the cleaning head and the carriage virtual surface are aligned.

In the present specification, the term "parallel" with respect to the plane direction of the cleaning head, the virtual plane of the rotation member of the cleaning head, and/or the handle axis means that the intersection angle thereof is 10 ° or less, preferably 5 ° or less, and more preferably 0 °.

In the present specification, the "wide space cleaning system" related to the cleaning tool refers to a system in which the plane direction of the cleaning head is held so as to intersect with the virtual plane of the holder of the carriage.

The above definition is a typical mode when cleaning a narrow space and a wide space using a cleaning tool, and is not limited to the mode of cleaning using a cleaning tool.

With respect to cleaning heads "

In this specification, the standing up in relation to the cleaning head means that the cleaning head is rotated from a state in which the planar direction of the cleaning head extends in a direction along the horizontal direction to a state in which the planar direction of the cleaning head extends in a direction along the vertical direction. For example, the cleaning head can be raised and rotated from a state in which the cleaning head extends in the horizontal direction in the planar direction to a state in which the cleaning head extends in the vertical direction in the planar direction, and the cleaning head can be raised.

"interior square" and "exterior square"

In the present specification, "inward" and "outward" refer to a direction approaching a predetermined line and a direction away from the predetermined line in an object having the predetermined line, for example, a center line (for example, a longitudinal center line, a short-side center line, a thickness center line, etc.), a shaft (for example, a rotation shaft, for example, a cleaning head rotation shaft, a grip rotation shaft, a handle shaft, etc.), and the like. For example, the inward direction in the longitudinal direction refers to a direction in the longitudinal direction that is close to a longitudinal centerline extending in the lateral direction.

"inner square position" and "outer square position"

In the present specification, the phrase "one side is disposed at an inner side position" as compared with the other side means that the one side is disposed at a position closer to a predetermined line to be a target than the other side, and the phrase "one side is disposed at an outer side position" as compared with the other side means that the one side is disposed at a position farther from the predetermined line to be a target than the other side.

Specifically, the present disclosure relates to the following aspects.

[ scheme 1]

A cleaning head for a cleaning tool, the cleaning head being capable of holding a cleaning sheet,

the cleaning head has a plate-like shape including a first cleaning surface and a second cleaning surface, and has a longitudinal direction, a short-side direction and a thickness direction which are orthogonal to each other,

the cleaning head includes a holding portion configured to hold at least one of one end and the other end of the cleaning sheet, and the holding portion is configured to be capable of taking an open state and a closed state.

The cleaning head includes a clamping portion for clamping at least one of one end portion and the other end portion of the cleaning sheet, and when the cleaning sheet is mounted on the cleaning head, at least one of the one end portion and the other end portion of the cleaning sheet is clamped by the clamping portion of the cleaning head. Therefore, when the cleaning tool with the cleaning sheet attached thereto is used to clean the surface to be cleaned using the first cleaning surface and the second cleaning surface, the end portion of the cleaning sheet sandwiched by the sandwiching portion is less likely to fall off the sandwiching portion, and the cleaning sheet is less likely to fall off the cleaning head.

[ scheme 2]

According to the cleaning head described in the claim 1,

the clamping part is provided with a first clamping part and a second clamping part,

the first clamping portion and the second clamping portion are rotatably coupled by a rotating end having a clamping portion rotating shaft extending in a direction along the longitudinal direction, and are openably and closably coupled by an opening/closing end extending in the direction along the longitudinal direction.

Since the cleaning head includes the predetermined holding portion, when the cleaning tool having the cleaning sheet attached thereto is used to clean the surface to be cleaned using the first cleaning surface and the second cleaning surface, the end portion of the cleaning sheet held by the holding portion is less likely to come off the holding portion, and the cleaning sheet is less likely to come off the cleaning head.

[ scheme 3]

The cleaning head according to claim 2, wherein the opening/closing end is disposed at an end of the cleaning head in the short side direction.

In the above cleaning head, since the open/close end is disposed at the end portion of the cleaning head in the short-side direction, that is, the open/close end is not disposed on the first cleaning surface and the second cleaning surface, the cleaning sheet is less likely to fall off from the cleaning head when the cleaning tool is used.

[ scheme 4]

The cleaning head according to claim 2 or 3, wherein the rotating end is disposed at an end of the cleaning head in the short side direction.

In the above cleaning head, since the rotating end is disposed at the end portion in the short side direction of the cleaning head, after the cleaning sheet is fixed to the cleaning head with the grip portion in the expanded state, the cleaning sheet is not easily pulled when the grip portion is in the closed state, and further, the cleaning sheet is not easily detached from the cleaning head when the cleaning tool is used.

[ scheme 5]

The cleaning head according to any one of claims 2 to 4, wherein the cleaning head includes a recessed portion for expanding the clamping portion at one or both ends in the longitudinal direction, and the recessed portion is present over the first clamping portion and the second clamping portion.

Since the cleaning head includes the predetermined recessed portion, it is easy for the user to put fingers into the recessed portion of the closed clamping portion (the first clamping portion and the second clamping portion) and to expand the clamping portion to form the clamping portion in the expanded state, and further, it is easy to attach the cleaning sheet to the cleaning head.

[ scheme 6]

According to the cleaning head described in the claim 5,

the first clamping portion is provided with a first outer surface and a first inner surface, and the second clamping portion is provided with a second outer surface and a second inner surface,

the first holding portion includes a first soft member constituting a first outer surface and a first hard member constituting a first inner surface, and the second holding portion includes a second soft member constituting a second outer surface and a second hard member constituting a second inner surface,

the bottom of the recessed portion is formed of at least a first hard member and a second hard member.

In the above cleaning head, the first outer surface of the first nip portion is formed of the first soft material, and the second outer surface of the second nip portion is formed of the second soft material, so that the cleaning head is excellent in cleaning performance. Further, in the above cleaning head, since the bottom of the recessed portion into which the user inserts his or her fingers is formed of the hard members (the first hard member and the second hard member), the user can easily put his or her fingers into the recessed portion of the closed nipping portion (the first nipping portion and the second nipping portion) and spread the nipping portion to form the opened nipping portion, and the cleaning sheet can be easily attached to the cleaning head.

[ scheme 7]

The cleaning head according to any one of aspects 2 to 6,

the first clamping portion is provided with a first inner surface and a first outer surface, and the second clamping portion is provided with a second inner surface and a second outer surface,

the first inner surface has a first slit portion for holding the one end portion of the cleaning sheet, and/or the second inner surface has a second slit portion for holding the other end portion of the cleaning sheet.

In the above cleaning head, the first inner surface has a predetermined first slit portion and/or the second inner surface has a predetermined second slit portion, and at least one or both of the one end portion and the other end portion of the cleaning sheet is held in the nip portion when the cleaning tool is used.

[ scheme 8]

According to the cleaning head described in the claim 7,

the first inner surface is provided with a first convex part and a first concave part which are configured to hold the cleaning sheet, and/or,

the second inner surface includes a second concave portion and a second convex portion corresponding to the first convex portion and the first concave portion, respectively, and configured to hold the cleaning sheet.

In the above cleaning head, since the first inner surface has the predetermined first convex portion and the first concave portion and/or the second inner surface has the predetermined second concave portion and the second convex portion, at least one or both of the one end portion and the other end portion of the cleaning sheet is more easily held in the holding portion when the cleaning tool is used, and therefore, at least one or both of the one end portion and the other end portion of the cleaning sheet is less likely to fall off from the holding portion when the cleaning tool is used, and the cleaning sheet is less likely to fall off from the cleaning head.

[ scheme 9]

The cleaning head according to claim 8, wherein the first slit portion is disposed on the first convex portion, and/or the second slit portion is disposed on the second convex portion.

In the above cleaning head, the first slit portion is disposed on the first projecting portion and/or the second slit portion is disposed on the second projecting portion, and at least one or both of the one end portion and the other end portion of the cleaning sheet is more easily held in the nip portion when the cleaning tool is used.

In the above cleaning head, since the first slit portion is disposed on the first projection and/or the second slit portion is disposed on the second projection, at least one or both of the first projection and the second projection can secure a space for press-fitting at least one or both of the first slit portion and the second slit portion. As a result, the thickness of the cleaning head can be reduced.

[ scheme 10]

The cleaning head according to any one of claims 6 to 9, wherein the first outer surface and the second outer surface constitute a first cleaning surface and a second cleaning surface, respectively.

In the above cleaning head, since the first outer surface of the first clamping portion and the second outer surface of the second clamping portion constitute the first cleaning surface and the second cleaning surface, respectively, the cleaning head can have the first cleaning surface and the second cleaning surface widely, and the cleaning performance is excellent.

[ scheme 11]

The cleaning head according to any one of claims 2 to 10,

the first holding portion and the second holding portion are respectively provided with a projection for fitting and a recess for fitting which are configured to hold the closed form of the holding portion and are fitted with each other,

the fitting projection projects in the longitudinal direction and is capable of expanding and contracting in the longitudinal direction,

the fitting recessed portion is recessed in the longitudinal direction.

In the above-described cleaning head, since the first holding portion and the second holding portion are provided with the predetermined projection for fitting and the recess for fitting, the holding property of both ends of the cleaning sheet in the closed state of the holding portion is excellent, and when the cleaning tool is used, the end portion of the cleaning sheet held by the holding portion is less likely to come off from the holding portion, and the cleaning sheet is less likely to come off from the cleaning head.

[ scheme 12]

A cleaning tool having a cleaning head capable of holding a cleaning sheet,

The cleaning tool described above has the same effect as in embodiment 1.

[ solution 13]

A method of using a cleaning sheet in a cleaning tool having a cleaning head capable of holding the cleaning sheet,

the cleaning head includes a holding portion configured to hold at least one of one end and the other end of the cleaning sheet, and the holding portion is configured to be capable of taking an expanded state and a closed state.

The above-described method of use has the same effect as in scheme 1.

[ scheme 14]

A cleaning sheet for a cleaning head according to any one of claims 1 to 11 or a cleaning tool according to claim 12, wherein,

the cleaning sheet is held by the cleaning head.

The cleaning sheet is configured to be held by a predetermined cleaning head, and therefore, has the same effect as that of the embodiment 1.

Hereinafter, a cleaning head for a cleaning tool of the present disclosure (hereinafter, the "cleaning head for a cleaning tool" may be abbreviated as "cleaning head"), a cleaning tool provided with a cleaning head of the present disclosure (hereinafter, the "cleaning tool provided with a cleaning head" may be abbreviated as "cleaning tool"), a cleaning sheet of the present disclosure used for the cleaning tool (hereinafter, the "use of a cleaning sheet for the cleaning tool" may be abbreviated as "use for a cleaning tool" or "use"), and a cleaning sheet for a cleaning tool of the present disclosure (hereinafter, the "cleaning sheet for a cleaning tool" may be abbreviated as "cleaning sheet") will be described in detail.

In the following, embodiments related to the cleaning tool, the cleaning head, the use of the cleaning tool, and the cleaning sheet will be collectively described. In the embodiment relating to the cleaning tool, for the sake of easy understanding, the cleaning tool will be described in the order from the member on the surface to be cleaned to the member on the user side, specifically, in the order of the cleaning head, the bracket, and the cleaning tool holder.

Fig. 1 to 13 are views for explaining a cleaning tool 1 according to one embodiment of the present disclosure (hereinafter, referred to as "first embodiment"). Specifically, fig. 1 is a perspective view of the cleaning tool 1. Fig. 2 is a perspective view of the cleaning head 3, and corresponds to a partially enlarged view of the cleaning head 3 of the cleaning tool 1 shown in fig. 1. Fig. 3 and 4 are a front view and a rear view of the cleaning tool 1 in the narrow space cleaning system, respectively. Fig. 5 is an expanded view of the first inner surface 129 and the second inner surface 139 side of the cleaning head 3 in the expanded configuration. Figure 6 is a cross-sectional view of section VI-VI of figure 5 of the cleaning head 3. Fig. 7 is an expanded view of the first outer surface 127 and the second outer surface 137 side of the cleaning head 3 in the expanded configuration. Fig. 8 is a perspective view of the bracket 5. Fig. 9 to 11 are views for explaining a method of attaching the cleaning sheet 31 to the cleaning head 3. Fig. 12 is a diagram for explaining the cleaning tool 1 in the wide space cleaning method. Fig. 13 is a diagram for explaining the cleaning tool 1 in the narrow space cleaning method.

The cleaning tool 1 of the first embodiment includes a cleaning head 3, a bracket 5 rotatably attached to the cleaning head 3, and a cleaning tool handle 7 connected to the bracket 5.

The cleaning head 3 has a plate-like shape having a plane direction P and a thickness direction T, and includes a cleaning surface 111 (specifically, a first cleaning surface 113 and a second cleaning surface 11) extending in parallel with the plane direction P5) And a cleaning head rotating shaft RA extending parallel to the plane direction P ₁ The bracket hole 117. The first cleaning surface 113 and the second cleaning surface 115 sandwich the cleaning head rotation axis RA ₁ Facing each other in the thickness direction T. It should be noted that the cleaning head rotation axis RA ₁ Is a rotation axis for rotating the cleaning head 3 with respect to the carriage 5.

The cleaning head 3 has a longitudinal direction L and a short direction S orthogonal to the longitudinal direction L. The longitudinal direction L and the short-side direction S are arranged in the plane direction P. Bracket hole 117 and cleaning head rotation axis RA ₁ Extending parallel to the longitudinal direction L. The carriage hole 117 has an opening 117a on one side surface (not shown) of four side surfaces (not shown) of the cleaning head 3.

The cleaning head 3 is formed by a rotating shaft RA passing through the cleaning head ₁ And an imaginary plane IS extending in the thickness direction T IS divided into a first cleaning head region 119 and a second cleaning head region 121, and the cleaning head 3 has the center of gravity of the cleaning head 3 in the first cleaning head region 119. The center of gravity of the cleaning head 3 is adjusted by two weights 153 described later.

The cleaning head 3 is configured to be able to hold the cleaning sheet 31. Specifically, the cleaning head 3 includes a clamping portion 123, and the clamping portion 123 is configured to clamp both the one end portion 33 and the other end portion 35 of the cleaning sheet 31 to hold the cleaning sheet 31.

The clamping part 123 includes a first clamping portion 125 and a second clamping portion 135, and the first clamping portion 125 and the second clamping portion 135 have a longitudinal direction L (a cleaning head rotation axis RA) ₁ ) Parallel extending clamping part rotating shaft RA ₂ Is rotatably connected to the rotating end 145 and passes through the longitudinal direction L (cleaning head rotation axis RA) ₁ ) The opening/closing ends 147 extending in parallel are connected so as to be openable and closable.

The opening/closing end 147 is disposed at one end 149 of the cleaning head 3 in the lateral direction S, and the rotating end 145 is disposed at the other end 151 of the cleaning head 3 in the lateral direction S.

The bracket hole 117 is disposed in the first clamping portion 125 (specifically, a first hard member 133 described later).

The first clamping portion 125 includes a first outer surface 127 and a first inner surface 129, and the first clamping portion 125 includes a first soft member 131 constituting the first outer surface 127 and a first hard member 133 constituting the first inner surface 129. The second nip portion 135 includes a second outer surface 137 and a second inner surface 139, and the second nip portion 135 includes a second soft material 141 constituting the second outer surface 137 and a second hard material 143 constituting the second inner surface 139.

The first clamping portion 125 includes two metal weights 153 arranged on the first outer surface 127 side surface (the first soft member 131 side surface) of the first hard member 133 in the first cleaning head region 119. Two balance weights 153 and cleaning head rotating shaft RA ₁ Separate from and rotatable with the cleaning head axis of rotation RA ₁ The (longitudinal direction L) extends in parallel. The two weights 153 are disposed adjacent to each other in the short direction S.

In addition, two weights 153 are disposed on the cleaning head rotation axis RA of the first clamping portion 125 ₁ And a rotating end 145. Accordingly, the user can not easily feel the weight of the counterweight 153 when using the cleaning tool 1, and the cleaning head 3 can easily stand when lifting up the cleaning tool 1.

As shown in fig. 6, the cleaning head 3 further includes a thickness direction center imaginary plane IS disposed at the center in the thickness direction T _T Two weights 153 are arranged on an imaginary plane IS with the center in the thickness direction _T And (4) crossing. Accordingly, when the user uses the cleaning tool 1, the weight of the weight 153 is hard to be felt, and when the cleaning tool 1 is lifted, the cleaning head 3 is easy to stand.

The first inner surface 129 of the first clamping portion 125 includes two first concave portions 157 disposed at positions inward in the longitudinal direction L and two first convex portions 155 disposed at positions outward in the longitudinal direction L with respect to the two first concave portions 157. The two first concave portions 157 are respectively concave toward the second holding portion 135 in the thickness direction T, and the two first convex portions 155 are respectively convex toward the second holding portion 135 in the thickness direction T.

The second inner surface 139 of the second sandwiching portion 135 includes two second protrusions 159 arranged at positions inward in the longitudinal direction L and two second recesses 161 arranged at positions outward in the longitudinal direction L with respect to the two second protrusions 159. The two second projections 159 protrude toward the first clamp portion 125 in the thickness direction T, respectively, and the two second recesses 161 are recessed toward the first clamp portion 125 in the thickness direction T, respectively.

First slit portions 163 and second slit portions 165 for holding the cleaning sheet 31 are provided on the top surfaces of the two first convex portions 155 and the top surfaces of the two second convex portions 159, respectively.

In addition, each of the two second protrusions 159 and each of the two first recesses 157 are configured to engage with each other in the closed configuration of the clamp 123. In addition, each of the two second recesses 161 and each of the two first protrusions 155 are configured to engage with each other in the closed configuration of the clamp 123.

Further, marks 167 (mark 167a and mark 167 b) for aligning the positions of the one end 33 and the other end 35 of the cleaning sheet 31 are respectively disposed between the two first recesses 157 of the first inner surface 129 of the first nip portion 125 and between the two second protrusions 159 of the second inner surface 139 of the second nip portion 135.

The first clamping portion 125 and the second clamping portion 135 are respectively provided with a fitting protrusion 169 and a fitting recess 171 configured to hold the closed form of the clamping portion 123.

Specifically, the fitting projections 169 are disposed at both ends of the first clamping portion 125 in the longitudinal direction L, and the fitting projections 169 project outward in the longitudinal direction L and are expandable and contractible in the longitudinal direction L. Further, fitting recessed portions 171 configured to be fitted with the fitting projections 169 are respectively disposed at both ends in the longitudinal direction L of the second sandwiching portion 135, and the fitting recessed portions 171 are recessed outward in the longitudinal direction L. The fitting protrusion 169 and the fitting recess 171 are fitted to both ends of the first clamping portion 125 in the longitudinal direction L, respectively, to hold the closed state of the clamping portion 123.

On both side surfaces of the cleaning head 3 disposed at both ends in the longitudinal direction L, recessed portions 173 for expanding and closing the nip portion 123 are disposed, respectively. The recess 173 is disposed closer to the opening/closing end 147 than the rotation end 145 in the short direction S, and the recess 173 is disposed over the first hard member 133 and the first soft member 131 of the first clamp portion 125 and the second hard member 143 and the second soft member 141 of the second clamp portion 135, but the bottom 175 (a portion located inward in the longitudinal direction L) of the recess 173 is constituted by the first hard member 133 of the first clamp portion 125 and the second hard member 143 of the second clamp portion 135. Accordingly, the user can easily put fingers into the recess 173 and spread the grip 123 (the first grip portion 125 and the second grip portion 135) to form a spread state, and can easily attach the cleaning sheet 31 to the cleaning head 3.

As shown in fig. 6, the carriage hole 117 includes two carriage holding portions 118 for holding the cleaning head coupling portion 201 of the carriage 5. The two carriage holding portions 118 are arranged so as to cover the periphery of the carriage 5, and the diameter of the inner surface of the carriage holding portion 118 is configured to be larger than the diameter of the outer surface of the cleaning head coupling portion 201 of the carriage 5.

The cleaning tool 1 (cleaning head 3) includes a rotation suppressing member, specifically, grease (indicated by X in fig. 6) inside the carriage holding portion 118 (more specifically, between the outer surface of the cleaning head coupling portion 201 of the carriage 5 and the inner surface of the carriage holding portion 118). The grease increases friction between an inner surface (not shown) of the bracket hole 117 and an outer surface of the bracket 5 (specifically, a cleaning head coupling portion 201 described later), and suppresses excessive rotation of the cleaning head 3 with respect to the bracket 5.

As shown in fig. 8, the bracket 5 is formed of a rod-shaped member, and includes: a cleaning head coupling portion 201 rotatably coupled to the bracket hole 117; a handle coupling portion 203 coupled to the cleaning tool handle 7; and a separating part 205 for separating the cleaning head connecting part 201 and the handle connecting part 203. The cleaning head connecting part 201, the handle connecting part 203 and the separating part 205 are arranged on a bracket virtual plane IS as a single plane _B The above.

The cleaning tool handle 7 is configured such that the link 301, the first grip portion 307, the second grip portion 309, the third grip portion 311, and the fourth grip portion 313 having the grip portion 315 are connected in this order, and the link 301, the first grip portion 307, the second grip portion 309, the third grip portion 311, and the fourth grip portion 313 can be switched between the connected state and the separated state.

The link 301 has a handle rotation axis RA capable of rotating the cleaning tool handle 7 in a predetermined direction ₃ The rotating portion of (2) is constituted by a pair of first joint portion 303 and second joint portion 305. The first joint portion 303 is coupled to the handle coupling portion 203, and the second joint portion 305 is coupled to the first handle portion 307.

The link 301 (handle 7 for cleaning tool) can be positioned on the bracket imaginary plane IS by the link 301 (handle 7 for cleaning tool) _B Up-rotation mode (i.e., handle rotation axis RA) ₃ IS with the imaginary plane of the bracket IS _B Orthogonal) to the handle coupling portion 203 of the bracket 5.

When the user uses the cleaning tool 1, the user inserts his or her hand into the recessed portions 173 disposed on both side surfaces in the longitudinal direction L of the cleaning head 3 in the closed state, and spreads the cleaning head 3 in the spread state, and as shown in fig. 9, the cleaning head 3 in the spread state is disposed on the cleaning sheet 31 such that the first inner surface 129 and the second inner surface 139 of the nip portion 123 (the first nip portion 125 and the second nip portion 135) face upward.

Next, the one end portion 33 and the other end portion 35 of the cleaning sheet 31 are folded toward the first inner surface 129 and the second inner surface 139, respectively, in such a manner that the one end portion 33 and the other end portion 35 of the cleaning sheet 31 are aligned with the mark 167a (167) and the mark 167b (167) of the first holding portion 125, respectively.

Next, as shown in fig. 10, the user fixes the one end 33 of the cleaning sheet 31 to the first slit portions 163 of the two first convex portions 155 respectively disposed in the first clamping portion 125, and fixes the other end 35 of the cleaning sheet 31 to the second slit portions 165 of the two second convex portions 159 respectively disposed in the second clamping portion 135.

Next, the first and

second clamping portions

125 and 135 are rotated about the clamping portion rotation axis RA of the rotating tip 145 ₂ The fitting protrusion 169 and the fitting recess 171 are fitted to each other for centering rotation, and the cleaning head 3 is closed as shown in fig. 11. Thereby, one end 33 of the cleaning sheet 31 is coveredThe first slit portions 163 of the two first convex portions 155 are held and held by the combination (two parts in total) of the first convex portion 155 and the second concave portion 161 and the combination (two parts in total) of the first concave portion 157 and the second convex portion 159 which are engaged with each other, and therefore, the one end portion 33 of the cleaning sheet 31 is less likely to fall off from the nip portion 123 during use.

Similarly, the other end 35 of the cleaning sheet 31 is held by the second slit portions 165 of the two second protrusions 159, and is held by the combination of the first protrusion 155 and the second recess 161 (two parts in total) and the combination of the first recess 157 and the second protrusion 159 (two parts in total) which are engaged with each other, so that the other end 35 of the cleaning sheet 31 is not easily detached from the holding portion 123 during use.

When a user cleans a wide space, the cleaning tool 1 is of a wide space cleaning type as shown in fig. 12, and the surface to be cleaned can be cleaned without any particular limitation. When the first surface 37 (the surface on the first cleaning surface 113 side of the cleaning head 3) of the cleaning sheet 31 is used for cleaning the surface to be cleaned and the first surface 37 is soiled, the cleaning head 3 can be rotated by 180 ° and the surface to be cleaned can be cleaned using the second surface 39 (the surface on the second cleaning surface 115 side of the cleaning head 3) of the cleaning sheet.

When a user cleans a narrow space, for example, a vertical narrow space 51 as shown in fig. 13, the cleaning tool 1 is set to a narrow space cleaning method, and specifically, the cleaning head 3 is rotated so that the planar direction (not shown) of the cleaning head 3 coincides with a virtual carriage plane (not shown) of the carriage 5, and an end portion in the longitudinal direction L of the cleaning head 3 (preferably, an end portion of the carriage hole 117 on the side where the opening 117a is not present) can be placed in the narrow space to clean the surface to be cleaned in the narrow space.

In order to change the cleaning tool 1 from the wide space cleaning method to the narrow space cleaning method, the cleaning tool 1 may be simply lifted. When the cleaning tool 1 (the cleaning head 3) is lifted up, the center of gravity of the cleaning head 3 is located in the first cleaning head region 119, and therefore, the cleaning head 3 easily raises the first cleaning head region 119 downward.

Further, since the cleaning tool 1 (cleaning head 3) has grease as a rotation suppressing member between the inner surface of the bracket hole 117 and the outer surface of the cleaning head coupling portion 201 of the bracket 5, the cleaning head 3 is not easily kept swinging like a pendulum when the cleaning tool 1 is lifted up, and is easily stopped in an upright state.

In the cleaning head 3 of the cleaning tool 1 according to the first embodiment, since the rotating end 145 is disposed at the other end 151 of the first cleaning head region 119 in the lateral direction S of the cleaning head 3, when the cleaning head 3 is lifted up, the cleaning head 3 is raised such that the rotating end 145 faces downward and the opening/closing end 147 faces upward. Therefore, the corner 53 of the vertically narrow space 51 can be easily cleaned using the side surface of the cleaning head 3 on the first cleaning head region 119 side (the rotating end 145 side), and at this time, the cleaning sheet 31 is less likely to fall off the cleaning head 3.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), the cleaning head has a plate-like shape including a first cleaning surface and a second cleaning surface, and has a long side direction, a short side direction, and a thickness direction that are orthogonal to each other.

The plate-like shape is not particularly limited as long as it has two surface portions (i.e., a first cleaning surface and a second cleaning surface) extending in the longitudinal direction and the short-side direction and facing each other and a side surface portion extending in the thickness direction. The shape of the surface portion as viewed in the thickness direction of the cleaning head may be polygonal, for example, triangular (e.g., isosceles triangle), quadrangular (e.g., rectangle, rhombus), pentagonal, hexagonal, etc., curved, for example, circular, elliptical, etc.

The surface portion (i.e., the first cleaning surface and the second cleaning surface) and the side surface portion may be not only flat surfaces but also curved surfaces (e.g., curved surfaces in which central regions other than both ends protrude outward and curved surfaces in which central regions other than both ends are recessed inward), and may include an uneven structure such as one or more convex portions, one or more concave portions, or the like. Thus, the cleaning sheet attached to the cleaning head is less likely to shift, and the cleaning sheet is less likely to fall off from the cleaning head when the cleaning tool is used.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), the thickness (length in the thickness direction) of the cleaning head is not particularly limited, but the thickness is preferably small from the viewpoint of cleaning a narrow space, and the thickness is preferably 3.0cm or less, more preferably 2.0cm or less. From the viewpoint of the strength of the cleaning tool, the thickness is preferably 0.1cm or more, and more preferably 1.0cm or more. The thickness of the cleaning head refers to the thickest portion of the cleaning head.

In the cleaning tool of the present disclosure (cleaning head of the present disclosure, use of the present disclosure), the cleaning head may have a hole for a bracket. The opening of the bracket hole can be disposed at any position of the cleaning head, and is preferably disposed on the side surface. The opening of the bracket hole can be disposed on side surfaces (both side surface portions) constituting the end portions (both end portions) in the longitudinal direction of the cleaning head, side surfaces (both side surface portions) constituting the end portions (both end portions) in the short-side direction of the cleaning head, and preferably on side surfaces (both side surface portions) constituting the end portions (both end portions) in the longitudinal direction. This is from the viewpoint of the convenience of use of the cleaning tool.

The bracket hole (and the cleaning head rotation shaft) can extend in a predetermined direction. The bracket hole (and the cleaning head rotation axis) is preferably disposed at the center of the side surface portion in a direction intersecting with (preferably orthogonal to) a predetermined direction. The bracket hole (and the cleaning head rotation shaft) is preferably disposed at the center in the longitudinal direction or the center in the short-side direction of the cleaning head. This is from the viewpoint of ease of rotation of the cleaning head and convenience of use of the cleaning tool. The predetermined direction may be a longitudinal direction or a short-side direction.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), the cleaning head includes a clamping portion that clamps at least one of one end portion and the other end portion of the cleaning sheet, and the clamping portion is configured to be capable of taking an open state and a closed state. Therefore, the end part clamped by the clamping part of the cleaning sheet is not easy to fall off from the clamping part, and the cleaning sheet is not easy to fall off from the cleaning head. The holding portion can hold one of the one end and the other end of the cleaning sheet and can hold both the one end and the other end of the cleaning sheet.

The holding section is not particularly limited as long as it can hold the cleaning sheet, but it is preferable that the holding section includes a first holding section and a second holding section, and the first holding section and the second holding section are rotatably connected by a rotating end having a holding section rotating shaft extending in a direction along a predetermined direction (preferably, a direction along the cleaning head rotating shaft, the longitudinal direction, or the like) and openably connected by a closing end extending in a direction along a predetermined direction (preferably, a direction along the cleaning head rotating shaft, the longitudinal direction, or the like). Therefore, the end part clamped by the clamping part of the cleaning sheet is not easy to fall off from the clamping part, and the cleaning sheet is not easy to fall off from the cleaning head.

The rotating end and the opening/closing end can be disposed at any position of the cleaning head, and for example, in the case where the rotating end (the clamping portion rotating shaft) and/or the opening/closing end extends in a direction along the cleaning head rotating shaft, the rotating end (the clamping portion rotating shaft) and/or the opening/closing end can be disposed at an end portion in a direction orthogonal to the cleaning head rotating shaft, a region adjacent to the cleaning head rotating shaft, or the like. In the case where the rotation end (the grip rotation axis) and/or the open/close end extends in the direction along the longitudinal direction of the cleaning head, the rotation end (the grip rotation axis) and/or the open/close end may be disposed at the end in the short direction, in the region adjacent to the cleaning head rotation axis, or the like.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), when the cleaning head includes the nip portion having the first nip portion and the second nip portion, as the holding member for holding the closed state of the first nip portion and the second nip portion, a member known in the art may be used, and examples thereof include a pair of engaging projections and engaging recesses, a surface fastener (hook-shaped member and loop-shaped member), a pair of magnets and ferromagnetic members (e.g., iron, cobalt, nickel), a spring for gripping, a mechanical lock, and the like.

The pair of fitting protrusions and fitting depressions protrude and are depressed in a predetermined direction, which is preferably a direction constituting a planar direction of the cleaning head (for example, a longitudinal direction or a short-side direction), more preferably a direction constituting a longitudinal direction of the cleaning head (for example, an inner direction or an outer direction of the longitudinal direction), and further preferably an inner direction of the longitudinal direction of the cleaning head. This makes it easy to maintain the closed state of the clamp portion.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, use of the present disclosure), it is preferable that the cleaning head includes a clamping portion having a first clamping portion and a second clamping portion, a counterweight (described later with respect to the counterweight) is disposed in the first cleaning head region, and a bracket hole including a cleaning head rotation shaft extending in a direction along the planar direction is further provided, in which case, the counterweight and the bracket hole are disposed in the first clamping portion. Accordingly, when the user uses the cleaning tool, the user does not feel the weight of the counterweight, and when the cleaning tool is lifted, the cleaning head is easy to stand up, so that the cleaning tool (cleaning head) is excellent in vertical cleaning performance, vertical narrow space cleaning performance, cleaning surface switching performance, and the like. The cleaning head rotation shaft is a rotation shaft for rotating the cleaning head with respect to the carriage.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), in a case where the cleaning head is divided into the first cleaning head region and the second cleaning head region by an imaginary plane that passes through the cleaning head rotation axis of the bracket-use hole and extends in the thickness direction of the cleaning head, the cleaning head can have the center of gravity of the cleaning head in the first cleaning head region. In the cleaning tool, the center of gravity of the cleaning head may be set so that the first region of the cleaning head moves downward and the second region of the cleaning head moves upward while the cleaning head is not fixed and the cleaning head rotation shaft of the cleaning head is held in a horizontal direction. This is from the viewpoint of vertical cleanability and vertical narrow space cleanability.

The center of gravity of the cleaning head can be adjusted by changing the mass of the members constituting the cleaning head, for example, a soft member, a hard member, and the like, in the first cleaning head region and the second cleaning head region.

Further, the center of gravity of the cleaning head can be adjusted by disposing an additional member, such as a counterweight, in the first cleaning head region. Examples of the material of the weight include metals (e.g., iron, stainless steel, lead, copper, and magnet), rubber, and plastics.

The counterweight may be disposed at any position in the first cleaning head region, but is preferably disposed at least at a position away from the rotational axis of the cleaning head. Since the center of gravity of the cleaning head can be efficiently separated from the cleaning head rotation shaft (the cleaning head can be easily raised) while suppressing an increase in the mass of the cleaning head, the cleaning head is excellent in cleaning performance in the vertical direction, cleaning performance in a vertically narrow space, cleaning surface switching performance, and the like.

The counterweight may be disposed so as to extend in a direction along the cleaning head rotation axis, or may be disposed so as to extend in a direction orthogonal to the cleaning head rotation axis.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), in the case where the cleaning head is provided with an odd number or an even number of weights, the odd number or the even number of weights may be arranged so as to intersect with a thickness direction center imaginary plane arranged at a center in the thickness direction of the cleaning head. Thus, when the user lifts up the cleaning tool including the cleaning head, the cleaning head is easily raised in the vertical direction.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, or the use of the present disclosure), when the cleaning head includes an even number of weights, the even number of weights may be arranged symmetrically with respect to the virtual plane of the thickness direction center. Thus, when the user lifts up the cleaning tool including the cleaning head, the cleaning head is easily raised in the vertical direction.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, or the use of the present disclosure), when the cleaning head includes the counterweight, the counterweight may be disposed asymmetrically with respect to a virtual plane of a center in the thickness direction, which is disposed at the center in the thickness direction of the cleaning head. For example, when the cleaning head includes one counterweight, the counterweight may be disposed so as not to intersect with the virtual plane of the thickness direction center. Accordingly, when the user lifts up the cleaning tool including the cleaning head, the cleaning head is easily tilted in a direction inclined from the vertical direction, and therefore, the cleaning tool is easily switched between the horizontal cleaning mode and the vertical cleaning mode.

Fig. 14 and 15 are views for explaining a cleaning tool 1 according to another embodiment (hereinafter, may be referred to as "second embodiment") of the present disclosure. Specifically, fig. 14 is a perspective view of the cleaning tool 1 of the second embodiment. Fig. 15 is a cross-sectional view of the cleaning tool 1 taken along the line XV-XV in fig. 14.

The cleaning tool 1 of the second embodiment includes a clamping portion 123, and the clamping portion 123 includes a first clamping portion 125 and a second clamping portion 135. The first clamping portion 125 and the second clamping portion 135 have a rotation axis RA in common with the cleaning head ₁ Clamping part rotating shaft RA extending in parallel (in the longitudinal direction L) ₂ Is rotatably coupled to the rotating end 145 and passes through the cleaning head rotating shaft RA ₁ The open-close ends 147 extending in parallel (in the longitudinal direction L) are connected to each other so as to be openable and closable.

In the cleaning tool 1 of the second embodiment, the rotating end 145 is disposed in the second cleaning head region 121, but is not disposed in the other end 151 in the short direction S, but is disposed in the second cleaning head region 121 close to the cleaning head rotation axis RA ₁ Of the position of (a). The open/close end 147 is disposed at one end 149 in the lateral direction S in the first cleaning head region 119.

The cleaning tool 1 (cleaning head 3) according to the second embodiment has a magnet as the counterweight 153 disposed in the first cleaning head region 119. The bracket 5 is formed of a rod-shaped member, and includes: a cleaning head coupling portion 201 rotatably coupled to a bracket hole (not shown); a handle coupling portion 203 coupled to the cleaning tool handle 7; and a separating portion 205 for separating the cleaning head connecting portion 201 and the handle connecting portion 203, wherein the cleaning head connecting portion 201, the handle connecting portion 203, and the separating portion 205 are disposed on a bracket virtual plane (not shown) which is a single plane.

The cleaning head coupling portion 201 of the bracket 5 includes a cleaning head fixing magnet 181 protruding toward the opposite side of the bracket 5 from the handle coupling portion 203 at a position facing the counterweight 153, and the cleaning head fixing magnet 181 is disposed so as to attract the counterweight 153. When the user lifts up the cleaning tool 1 to clean a vertically narrow space, for example, the first cleaning head region 119 including the magnet as the weight 153 moves downward, the cleaning head 3 stands up, and the weight 153 as the magnet and the cleaning head fixing magnet 181 attract each other, so that the standing state of the cleaning head 3 can be fixed. Therefore, the cleaning tool 1 of the second embodiment is excellent in cleaning performance in the vertical direction as well as in cleaning performance in the horizontal direction. Since the carriage 5 is made of stainless steel, which is a non-magnetic body, the weight 153, which is a magnet, does not attract the carriage 5 itself, and the weight 153, which is a magnet, attracts only the protruding cleaning head fixing magnet 181.

In the cleaning tool 1 of the second embodiment, the first clamping portion 125 includes the clamping magnet 183 disposed so as to attract the magnet constituting the counterweight 153 at a position corresponding to the counterweight 153 of the second clamping portion 135, and the clamping portion 123 can maintain the closed state by attracting the clamping magnet 183 of the first clamping portion 125 and the counterweight 153 (magnet) of the second clamping portion 135 to each other. In other words, the counterweight 153 not only serves to arrange the center of gravity in the first cleaning head region 119, but also serves to maintain the clamping portion 123 in the closed configuration.

In the cleaning tool 1 of the second embodiment, one end (not shown) of the cleaning sheet (not shown) is held by the two first slit portions 163 disposed on the first outer surface 127 of the first clamping portion 125, and the other end (not shown) of the cleaning sheet (not shown) is held by the two second slit portions 165 disposed on the second inner surface 139 of the second clamping portion 135. In other words, one end (not shown) of the cleaning sheet (not shown) is held by the first outer surface 127 of the cleaning head 3, and the other end (not shown) of the cleaning sheet (not shown) is held by the holding portion 123 of the cleaning head 3.

The other parts of the cleaning tool 1 of the second embodiment are the same as those of the cleaning tool 1 of the first embodiment, and therefore, the description thereof is omitted.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), the cleaning head preferably includes a cleaning sheet fixing portion for holding the cleaning sheet. The cleaning sheet fixing portion may be a slit portion (for example, the first slit portion 163 and the second slit portion 165 shown in the first and second embodiments), a hook member of a surface fastener, or the like, in addition to a nip portion (for example, a nip portion).

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), in the case where the cleaning head is provided with the cleaning sheet fixing portion for holding the cleaning sheet, the cleaning head may be provided with one or more cleaning sheet fixing portions on the outer surface thereof, and may be provided with one or more cleaning sheet fixing portions on the inner surface thereof.

As an example in which the cleaning head is provided with one or a plurality of cleaning sheet fixing portions on the inner surface thereof, for example, there is an example in which the cleaning head is provided with a nip portion, for example, a nip portion having a first nip portion and a second nip portion. Examples of the cleaning sheet holder include a first holding portion and a second holding portion rotatably coupled to each other by a rotating end having a holding portion rotating shaft extending in a predetermined direction (preferably, a direction along the cleaning head rotating shaft, the longitudinal direction, or the like), and openably and closably coupled to each other by an opening/closing end extending in a predetermined direction (preferably, a direction along the cleaning head rotating shaft, the longitudinal direction, or the like), and examples of the cleaning sheet holder include a cleaning sheet holder provided on a first inner surface of the first holding portion or a second inner surface of the second holding portion.

In addition, the cleaning head may be provided with one or more cleaning sheet fixing portions on an outer surface thereof, and in the case where the cleaning head is provided with a clamping portion, for example, a clamping portion having a first clamping portion and a second clamping portion, a first outer surface of the first clamping portion and/or a second outer surface of the second clamping portion may be provided with the cleaning sheet fixing portions.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), the cleaning head may be made of various materials, but it is preferable that the outer surface is made of a soft member and the inside is made of a hard member harder than the soft member. This is from the viewpoint of achieving both operability and cleaning performance.

Examples of the raw material constituting the soft member include ethylene-vinyl acetate copolymer (EVA), polyurethane (PU), elastomers, rubbers, sponges, various foams, and fabrics (for example, nonwoven fabrics such as felt, woven fabric, and knitted fabric), and examples of the raw material constituting the hard member include ABS resin, polyolefin (for example, polyethylene (PE), polypropylene (PP), and the like), polyethylene terephthalate (PET), polyacetal (POM), polycarbonate (PC), polystyrene (PS), polyamide (PA), polyvinyl chloride (PVC), acrylic resin, and composite materials thereof, and metal (for example, aluminum).

In the cleaning tool of the present disclosure (use of the present disclosure), the cleaning tool may include a cleaning head, a bracket, and a cleaning tool handle.

Preferably, the holder is formed of a rod-shaped member and is rotatably coupled to the cleaning head through a holder hole of the cleaning head. The bracket is preferably arranged on an imaginary bracket plane which is a single plane. This is from the viewpoint of cleanability of a narrow space.

The rod-shaped member may be a member having a circular, elliptical, or polygonal cross section, and the bracket preferably has a circular cross section at least at the cleaning head coupling portion, and preferably has a circular cross section as a whole. This is because the cleaning head is rotated about the cleaning head rotation axis, and the carriage is less likely to damage the surface to be cleaned. Examples of the material of the bracket include a metal, for example, a magnetic material (magnetic metal), for example, iron (for example, zinc-plated iron), a non-magnetic material (non-magnetic metal), for example, stainless steel, aluminum, and the like.

In the cleaning tool of the present disclosure (used in the present disclosure), when the cleaning tool includes a cleaning head fixing mechanism described later, and when the cleaning head fixing mechanism is a pair of magnets or a pair of magnets and a ferromagnetic body, the holder may be configured by a ferromagnetic body, a nonmagnetic body, or a combination thereof, and may further include a magnet.

For example, the cleaning head can be fixed at a desired position by forming the bracket with a non-magnetic body (e.g., stainless steel) and disposing a ferromagnetic body or a magnet in a part thereof.

The bracket may include, for example: a cleaning head connecting part which can be rotatably connected with the hole for the bracket; a handle connecting part connected with the handle of the cleaning tool; and a separating part for separating the cleaning head connecting part and the handle connecting part. The handle connecting portion and the separating portion may be connected to the cleaning head connecting portion and the separating portion in a crossing manner, or may be integrated in a bending manner.

The cleaning head connecting part and the handle connecting part can have any length. For example, the cleaning head coupling portion can be made substantially the same length as the handle coupling portion, so that the bracket, and hence the cleaning tool, can be made lightweight, and the force applied to the cleaning tool handle can be reliably transmitted to the cleaning head. Further, the cleaning head coupling portion may be longer than the handle coupling portion, and thus, the force applied to the cleaning tool handle can be more easily transmitted to the cleaning head. Further, the cleaning head coupling portion can have a length substantially equal to or longer than that of the cleaning head, and therefore, the force applied to the cleaning tool handle can be easily transmitted to the entire cleaning head.

In the above-described cleaning head coupling portion, the handle coupling portion, and the separating portion, at least the cleaning head coupling portion and the handle coupling portion are preferably arranged on an imaginary plane of the bracket, and more preferably, the cleaning head coupling portion, the handle coupling portion, and the separating portion are arranged on an imaginary plane of the bracket. This is from the viewpoint of cleanability of a narrow space.

In the cleaning tool of the present disclosure (used in the present disclosure), the cleaning tool may further include a rotation suppressing member for suppressing the cleaning head from freely rotating about the cleaning head rotation axis. Thus, when the cleaning tool is lifted, the cleaning head can be prevented from continuously swinging like a pendulum with the cleaning head rotating shaft as an axis.

The rotation suppressing member may be a friction-enhancing agent, such as grease, disposed between an inner surface of the hole for the carriage and an outer surface of the carriage (e.g., the cleaning head coupling portion). By using the friction enhancer, the spin suppression effect is hardly reduced with the passage of time.

In addition, the rotation suppressing member may include: a protruding member (e.g., an O-ring disposed on the entire outer periphery) disposed on a part or all of the outer periphery of the bracket (e.g., the cleaning head coupling portion) and configured to generate friction with the inner surface of the bracket hole, a protruding member disposed on the inner surface of the bracket hole and configured to generate friction with the outer surface of the bracket (e.g., the cleaning head coupling portion), and the like.

In the cleaning tool of the present disclosure (used in the present disclosure), when the carriage is disposed on the carriage virtual surface, the cleaning tool may be configured so that the cleaning head and the carriage can be fixed so that the planar direction of the cleaning head coincides with the carriage virtual surface (hereinafter, the cleaning tool may be referred to as a cleaning tool including a "cleaning head fixing mechanism"). This provides the cleaning tool with excellent cleaning performance in a narrow space.

Examples of the cleaning head fixing means include a pair of magnets, a pair of magnets and a ferromagnetic material (e.g., iron, cobalt, or nickel), and a pair of fitting portions. As an example in which the cleaning head fixing mechanism is a pair of magnets, there is an embodiment (for example, the second embodiment) including a magnet disposed on a bracket (for example, a cleaning head coupling portion, a handle coupling portion, and/or a separating portion) and a magnet disposed at a position of the cleaning head corresponding to the magnet disposed on the bracket. The same applies to the case where the cleaning head fixing mechanism is a pair of magnets and a ferromagnetic member. As an example of the cleaning head fixing means being a pair of fitting portions, a bracket and a groove portion formed to fit with the bracket, which is disposed in the cleaning head, according to a third embodiment described later, can be given.

In the case where the cleaning head fixing mechanism is a pair of magnets, when the magnets are disposed in the cleaning head coupling portion of the carriage, it is preferable that the cleaning head coupling portion of the carriage is formed of a non-magnetic material, the magnets are disposed at predetermined positions in the circumferential direction of the cleaning head rotation axis, and the magnets protrude from the cleaning head coupling portion of the carriage in a direction orthogonal to the cleaning head rotation axis. This facilitates fixing the cleaning head at a desired position.

Fig. 16 is a view for explaining a cleaning tool 1 according to another embodiment of the present disclosure (hereinafter, may be referred to as "third embodiment"), and is a perspective view.

The cleaning tool 1 of the third embodiment includes a clamping portion 123, and the clamping portion 123 includes a first clamping portion 125 and a second clamping portion 135. The first and

second clamping portions

125 and 135 have a longitudinal direction L (cleaning head rotation axis RA) ₁ ) Parallel extending clamping part rotating shaft RA ₂ Is rotatably connected to the rotating end 145 and passes through the longitudinal direction L (cleaning head rotating shaft RA) ₁ ) The opening/closing ends 147 extending in parallel are connected to be openable and closable.

In the cleaning tool 1 of the second embodiment, the rotating end 145 is disposed in the second cleaning head region 121, but is not disposed in the other end 151 in the short direction S, but is disposed in the second cleaning head region 121 close to the cleaning head rotation axis RA ₁ Of the position of (a). The opening/closing end 147 is disposed in the first cleaning head region 119, but is not disposed at one end 149 in the short direction S, but is disposed in the first cleaning head region 119 close to the cleaning head rotation axis RA ₁ The position of (a).

The cleaning tool 1 includes magnets 191 (a magnet 191a, a magnet 191b, and a magnet 191 c) disposed on the first inner surface 129 of the first clamping portion 125. The magnet 191a is disposed at the center in the longitudinal direction L, and the

magnets

191b and 191c are disposed at both ends in the longitudinal direction.

The cleaning tool 1 further includes a magnet 193 (magnet 193a, magnet 193b, and magnet 193 c) disposed on the second inner surface 139 of the second clamping portion 135. The magnet 193a is disposed at the center in the longitudinal direction L and at a position corresponding to the magnet 191a, and the

magnets

193b and 193c are disposed at both ends in the longitudinal direction and at positions corresponding to the

magnets

191b and 191 c.

In the cleaning tool 1, the magnet 191 of the first clamping portion 125 and the magnet 193 of the second clamping portion 135 are configured to act to hold the closed state of the clamping portion 123, and one end (not shown) and the other end (not shown) of the cleaning sheet inserted between the first inner surface 129 of the first clamping portion 125 and the second inner surface 139 of the second clamping portion 135 are held by the magnetic force of mutual attraction between the magnet 191 and the magnet 193.

In the cleaning tool of the present disclosure (use of the present disclosure), the cleaning tool may be so-called one-arm holding in which the cleaning head is coupled to the carriage via the carriage holes only at one location, or may be so-called two-arm holding in which the cleaning head is coupled to the carriage via the carriage holes at a plurality of locations.

By holding the cleaning tool by a single arm, as shown in fig. 13, it is easy to clean a narrow space using the end portion of the cleaning head on the side where the bracket is not present. Further, by holding the cleaning tool with both arms, the force of the user can be easily transmitted to the cleaning head.

As the cleaning tool held by both arms, for example, there is a cleaning tool in which a holder is coupled to two holes for holders disposed at two locations on a side surface of a cleaning head.

In the case where the cleaning tool of the present disclosure (used in the present disclosure) has a longitudinal direction and a short-side direction, the two bracket holes may be two side surface portions facing each other and disposed at both ends in the longitudinal direction of the cleaning head, or two side surface portions facing each other and disposed at both ends in the short-side direction of the cleaning head, and preferably two side surface portions facing each other and disposed at both ends in the longitudinal direction of the cleaning head.

The two bracket holes may be continuously integrated or may be separated, but it is preferable to have a single cleaning head rotation shaft.

In the cleaning tool of the present disclosure (the cleaning head of the present disclosure, the use of the present disclosure), examples of the cleaning sheet include those known in the art, for example, a cleaning sheet including a nonwoven fabric, a cleaning sheet including a tow, and the like. The cleaning sheet may be of a dry type or a wet type impregnated with a chemical solution.

Description of the reference numerals

1. Cleaning tool

3. Cleaning head

5. Bracket

7. Handle for cleaning tool

31. Cleaning sheet

111. Cleaning surface

113. First cleaning surface

115. Second cleaning surface

117. Hole for bracket

117a opening part

118. Bracket holding part

119. First cleaning head zone

121. Second cleaning head zone

123. Clamping part

125. A first clamping part

135. Second holding part

145. Rotating end

147. Open-close terminal

153. Counterweight

Direction of P plane

T thickness direction

L long side direction

S short side direction

IS imaginary plane

IS _T Central imaginary plane in thickness direction

IS _B Imaginary plane of bracket

RA ₁ Cleaning head rotating shaft

RA ₂ Clamping part rotating shaft

RA ₃ Handle rotating shaft

Claims

1. A cleaning head for a cleaning tool, the cleaning head being capable of holding a cleaning sheet, characterized in that,

the cleaning head has a plate-like shape including a first cleaning surface and a second cleaning surface, and has a long side direction, a short side direction and a thickness direction which are orthogonal to each other,

the cleaning head includes a clamping portion for clamping at least one of one end portion and the other end portion of the cleaning sheet, the clamping portion is configured to be capable of acquiring an unfolded state and a closed state,

the clamping portion is provided with a first clamping portion and a second clamping portion,

the first clamping section and the second clamping section are rotatably coupled by a rotating end having a clamping section rotating shaft extending in a direction along the longitudinal direction and openably and closably coupled by an opening/closing end extending in the direction along the longitudinal direction,

the first inner surface has a first slit portion for holding the one end portion of the cleaning sheet, and/or the second inner surface has a second slit portion for holding the other end portion of the cleaning sheet,

the first inner surface is provided with a first convex part and a first concave part which are configured in a manner of holding the cleaning sheet,

the second inner surface is provided with a second concave part and a second convex part corresponding to the first convex part and the first concave part respectively and configured in a manner of holding the cleaning sheet,

the first slit portion is disposed on the first convex portion, and/or the second slit portion is disposed on the second convex portion.

2. Cleaning head according to claim 1,

the opening/closing end is disposed at an end of the cleaning head in the short side direction.

3. Cleaning head according to claim 1 or 2,

the rotating end is disposed at an end of the cleaning head in the short side direction.

4. Cleaning head according to claim 1 or 2,

the cleaning head includes a recessed portion for spreading the clamping portion at one or both ends in the longitudinal direction, and the recessed portion is present over the first clamping portion and the second clamping portion.

5. The cleaning head of claim 4,

6. Cleaning head according to claim 1 or 2,

the first outer surface and the second outer surface constitute a first cleaning surface and a second cleaning surface, respectively.

7. Cleaning head according to claim 1 or 2,

the first clamping portion and the second clamping portion are respectively provided with a projection for fitting and a recess for fitting which are configured to hold the closed form of the clamping portion and are fitted with each other,

the fitting recess portion is recessed in the longitudinal direction.

8. A cleaning tool having a cleaning head capable of holding a cleaning sheet, characterized in that,

9. A method of using a cleaning sheet in a cleaning tool having a cleaning head capable of holding the cleaning sheet,

the first clamping portion and the second clamping portion are rotatably coupled by a rotating end having a clamping portion rotating shaft extending in a direction along the longitudinal direction and are openably and closably coupled by an opening/closing end extending in the direction along the longitudinal direction,

the first inner surface is provided with a first convex part and a first concave part which are configured in a mode of holding the cleaning sheet,

10. A cleaning sheet for a cleaning head according to any one of claims 1 to 7 or a cleaning tool according to claim 8, characterized in that,

the cleaning sheet is configured to be held by the cleaning head.