JP7675432B2 - Floor wiper - Google Patents

Description

The present invention relates to a floor wiper that cleans floor surfaces by attaching a cleaning sheet to the head.

Floor wipers that clean floor surfaces by attaching a cleaning sheet to the head are well known. In such floor wipers, various fixing mechanisms are used to fix the sheet to the head.

For example, Patent Document 1 discloses a flooring wiper in which multiple elastic tongues 18a-18f are provided by providing multiple intersecting slits at the four corners of the top surface of the head 10. When fixing a cleaning sheet 22 to the head 10, the bottom surface of the head 10 is covered with the sheet 22, and the end of the sheet 22 is pushed into the slits and engaged with the elastic tongues 18a-18f to fix it. When removing the sheet 22 from the head 10, the end of the sheet 22 is pulled strongly to pull the sheet 22 out of the slits, so that it can be removed. However, the flooring wiper disclosed in Patent Document 1 requires the sheet 22 to be replaced by directly touching it with one's hands, which creates a problem in terms of hygiene, since hands become dirty when removing the dirty sheet 22 from the head 10 after cleaning, not when installing a new sheet 22.

On the other hand, Patent Document 2 discloses a flooring wiper 1 to which a sheet 2 with a spatula for removing wax is attached. The flooring wiper 1 has a fixing member 10 connected to the head 4 at both longitudinal ends of the upper surface of the head 4 so that it can be raised and lowered, and a protrusion 11 protruding downward is provided at the end of the fixing member 10 in the longitudinal direction . The protrusion 11 is configured to fit into a locking hole 12 opened on the upper surface of the head 4. When fixing the sheet 2 to the head 4, the fixing member 10 is turned down to interpose the end of the sheet 2 between the fixing member 10 and the head 4 with the lower surface of the head 4 covered with the sheet 2, and the protrusion 11 is fixed by fitting into the locking hole 12 through the mounting hole 26 of the sheet 2. The flooring wiper 1 also has a knob 13 provided at the end of the fixing member 10, which can be held by hand to raise and lower the fixing member 10. However, when the sheet 2 is fixed to the head 4, the knob 13 is in contact with the sheet 2, so when removing the sheet 2, the soiled sheet 2 will come into contact with the hands. As with the device of Patent Document 1, it can be said that there is room for improvement in terms of hygiene.

Utility Model Registration No. 3023167 JP 2006-34604 A

The technical objective of the present invention is to provide a flooring wiper that prevents fingertips from touching a dirty cleaning sheet when removing the cleaning sheet from the head after cleaning.

In order to solve the above problems, according to the present invention, there is provided a flooring wiper having a head for holding a cleaning sheet at the end of a handle, and for cleaning a floor by attaching the sheet to the head, the head having a buffer pad on which the sheet is attached and having a left-right length longer than its front-to-back length, a head base fixed to an upper surface of the buffer pad with front and rear portions of the outer periphery of the buffer pad exposed, a first sheet holding member provided at a front end in the front-to-back direction of the head base, and a second sheet holding member provided at a rear end, the first and second sheet holding members being attached so as to be rotatable about first and second rotation axes extending in the left-to-right direction, respectively, and having attachment positions at which the first and second sheet holding members are clamped between the exposed front and rear portions of the buffer pad, and a first and second sheet holding members being fixed to an upper surface of the buffer pad with the sheet attached to the head base. a release position in which the clamped state of the sheet is released by separating the cushioning pad from the cushioning pad, and a first and second operating piece shaped like a protrusion is connected to the first and second sheet holding members, respectively, for use in rotating the first and second sheet holding members, the first operating piece protruding from the first sheet holding member toward the rear end above the head base, and the second operating piece protruding from the second sheet holding member toward the front end above the head base, the first and second operating pieces being operable from the top side of the head base, the first operating piece and the second operating piece being arranged adjacent to each other in the left-right direction on the head base, and the tip portions of the operating pieces are pushed downward from the top side to displace the clamped state of the sheet from the attached position to the released position .

In the present invention, it is desirable that the first sheet holding member and the first operating piece rotate about the first rotation axis such that when one is pushed downward, the other is lifted upward, and that the second sheet holding member and the second operating piece rotate about the second rotation axis such that when one is pushed downward, the other is lifted.

In the present invention, it is desirable that a handle mounting portion for mounting the handle is provided at the center of the head base in the front-to-back and left-to-right directions, and that the first and second operating pieces are positioned closer to one end in the left-to-right direction than the handle mounting portion.

In the present invention, it is preferable that the upper surface of the head base is provided with a recess in which the first and second operating pieces are housed.

In the present invention, it is desirable that the first and second sheet holding members have first and second spring mounting portions to which ends of a spring member to which a contractile force is constantly applied are respectively attached, and that when the first and second sheet holding members are in the released position, the first and second spring mounting portions are located above the first and second rotation axes and the first and second sheet holding members are held in the released position by the contractile force of the spring member, and when the first and second sheet holding members are in the mounted position, the first and second spring mounting portions are located below the first and second rotation axes and the first and second sheet holding members are held in the mounted position by the contractile force of the spring member, and that the first and second spring mounting portions rotate in an outwardly convex arc around the first and second rotation axes as the first and second sheet holding members rotate between the released position and the mounted position.
In this case, the spring member may be formed of a coil spring, one end and the other end of the spring member being attached to the first and second spring attachment portions, respectively.

The floor wiper of the present invention has a buffer pad on which a cleaning sheet is attached, a head base fixed to the upper surface of the buffer pad, and first and second sheet holding members rotatably attached to the head base . The first and second sheet holding members are displaceable between an attachment position where the sheet is clamped between the buffer pad and the head base, and a release position where the sheet is released from the clamped state by moving away from the buffer pad. The first and second sheet holding members are connected to first and second operating pieces used for these rotation operations, and the first and second operating pieces are configured to be operable from the upper surface side of the head base. Therefore, by operating the first and second operating pieces from above the head base that does not contribute to holding the sheet, the first and second sheet holding members rotate between the attachment position and the release position, so that it is possible to prevent fingertips from touching the dirty sheet when removing the sheet from the head after cleaning.

FIG. 2 is a perspective view showing a state in which a cleaning sheet is attached to the flooring wiper of the present invention. FIG. 2 is a perspective view showing a state in which a seat is removed from the state shown in FIG. 1 . 11 is a plan view of the head when the first and second sheet holding members are in the mounting position. FIG. FIG. 2 is an exploded perspective view of the head as viewed from above. 4 is an exploded perspective view showing a state in which a head base and first and second sheet holding members are viewed from the bottom side. FIG. FIG. 11 is a perspective view showing a state in which the head base and the first and second sheet holding members are combined and viewed from the bottom side; FIG. 7 is an enlarged cross-sectional view showing a schematic cross section taken along line VII-VII in FIG. 3. FIG. 8 is an enlarged cross-sectional view showing a schematic cross section taken along line VIII-VIII in FIG. 3. FIG. 4 is an enlarged cross-sectional view showing a schematic cross section taken along line IX-IX in FIG. 3. 7 is an enlarged cross-sectional view showing a schematic cross section taken along the line VII-VII when the first and second sheet holding members are in the release position. FIG. 8 is an enlarged cross-sectional view showing a schematic cross section taken along the line VIII-VIII when the first and second sheet holding members are in the release position. FIG. 9 is an enlarged cross-sectional view showing a schematic cross section taken along the line IX-IX when the first and second sheet holding members are in the release position. FIG. 11 is an enlarged view of a main portion, illustrating a rotation locus of first and second spring attachment portions that rotate in conjunction with rotation of the first and second sheet holding members; FIG.

A flooring wiper according to the present invention will be described with reference to FIGS. 1 to 13. FIG.
The flooring wiper 1 has a handle 2 and a rectangular head 3 attached to the tip of the handle 2, and a cleaning sheet 4 is attached to the head 3 so as to cover the entire lower surface of the head 3, and the head 3 is pressed against the floor surface of a toilet, living room, etc. to perform cleaning.

The sheet 4 is a rectangular flexible sheet made of nonwoven fabric, woven fabric, or the like. The sheet 4 may be of a wet type that contains liquid such as water or detergent, or a dry type that does not contain liquid, depending on the cleaning purpose.

The handle 2 is a round bar-shaped member. The handle 2 has a grip 2a at its base end, and a universal joint 5 that can tilt in the front-back and left-right directions is attached to its tip. The handle 2 is connected to the head 3 via the universal joint 5 so that it can tilt at any angle in the front-back and left-right directions. The handle 2 may be made extendable to adjust its length.

The head 3 has a buffer pad 6 on which the sheet 4 is attached and which has a length in the left-right direction longer than the length in the front-to-rear direction, a head base 7 fixed to the center of the top surface 6a of the buffer pad 6 in the front-to-rear and left-to-right directions, with a front portion FA and a rear portion BA of the top surface 6a at the outer periphery of the buffer pad 6 exposed, a first sheet holding member 20A provided at the front end of the head base 7 in the front-to-rear direction, and a second sheet holding member 20B provided at the rear end.

The buffer pad 6 is a plate made of synthetic resin foam and has cushioning properties during cleaning. As shown in Figures 4 and 5, the buffer pad 6 has multiple circular holes 6b that penetrate in the thickness direction, and multiple circular protrusions 8 that are provided inside (on the back side) of the head base 7 and protrude downward are fitted into these circular holes 6b, thereby fixing the buffer pad 6 and the head base 7 to each other. The buffer pad 6 has a shape in which the center parts 6c of both sides in the front-to-rear direction are curved inward.

The head base 7 is a member whose left-right length is longer than its front-rear length, and both left-right ends are rounded by curves. A handle attachment portion 10 for attaching the handle 2 is provided on the upper surface 7a of the head base 7, and this handle attachment portion 10 is disposed in the center of the head base 7 in the front-rear and left-right directions.
The handle attachment portion 10 is formed in a convex shape that protrudes upward and has a pair of bearing portions 10a, 10a that receive the universal joint 5. A plurality of ribs 9 are provided inside the head base 7, which reinforce the head base 7 and define a receiving groove 31 and a recess 43, which will be described later.

As shown in Figures 4 and 5, the head base 7 has a notch groove 11 formed on the front and rear side surfaces 7b, 7c that leads to the inside of the head base 7, and the notch groove 11 is provided at each of the left and right ends of the front and rear side surfaces 7b, 7c. Inside the head base 7, a concave bearing portion 12 is provided at a position close to the notch groove 11 (see Figures 5 and 7).

The first and second sheet holding members 20A, 20B are for attaching the sheet 4 to the buffer pad 6. The first and second sheet holding members 20A, 20B have the same configuration, so only the first sheet holding member 20A will be described. Unless otherwise required, the second sheet holding member 20B will be given the same reference numeral as the first sheet holding member 20A and detailed description will be omitted.

The first sheet holding member 20A is an elongated member having a cross-sectional shape of an inverted U-shape or an inverted V-shape with an open lower portion, or a concave shape similar thereto, and as shown in Figs. 4, 5, and 7, has a base portion 21 extending in the left-right direction along the front side surface 7b of the head base 7 (the rear side surface 7c for the second sheet holding member 20B), and an arc-shaped portion 22 connected to the upper edge of the base portion 21 and formed to draw an outwardly convex arc. The lower edge 22a of the arc-shaped portion 22 is a portion that holds the sheet 4 between the upper surface 6a of the buffer pad 6, and is provided with a plurality of protrusions 25 for preventing the sheet 4 from slipping when the sheet 4 is held. In addition, a plurality of ribs 26 are arranged at intervals in the left-right direction inside the first sheet holding member 20A to reinforce the first sheet holding member 20A. As shown in FIG. 3, the lower end portion of the first sheet holding member 20A on the outer side in the front-rear direction (the lower end edge 22a of the arc-shaped portion 22) has a shape that is curved inward in plan view to match the center portion 6c of the buffer pad 6.

As shown in Figures 4 and 7, the first sheet holding member 20A has pivot shafts 27, 27 at both left and right ends. The pivot shafts 27, 27 have arms 27a, 27a that protrude from the lower end of the base plate 21 toward the second sheet holding member 20B side (in the second sheet holding member 20A, toward the first sheet holding member 20A side), and tip shafts 27b, 27b provided at the tips of the arms 27a, 27a. The tip shafts 27b, 27b protrude outward in the left and right directions, facing away from each other.

The arm portions 27a, 27a are inserted into the head base 7 through the two cutout grooves 11, 11 provided on the front side surface 7b of the head base 7 (the rear side surface 7c in the case of the second sheet holding member 20B), and the tip shafts 27b, 27b are journalled on the bearing portions 12, 12 within the head base 7.

The tip shafts 27b, 27b of the first sheet holding member 20A are concentric with each other, and their centers are configured to be located on the first rotation axis L1 extending in the left-right direction at the front end of the head base 7.
On the other hand, the tip shafts 27b, 27b of the second sheet holding member 20B are concentric with each other and are configured so that their centers are located on a second rotation axis L2 extending in the left-right direction at the rear end of the head base 7. These first and second rotation axes L1, L2 extend horizontally and in parallel with each other.

As a result, the first and second sheet holding members 20A, 20B are freely rotatable about the first and second rotation axes L1, L2, which extend in the left-right direction, respectively, relative to the front and rear ends of the head base 7, and can be displaced between an attachment position in which the first and second sheet holding members 20A, 20B are clamped between the exposed front portion FA and rear portion BA of the upper surface 6a of the buffer pad 6, and a release position in which the first and second sheet holding members 20A, 20B are separated from the buffer pad 6 to release the clamped state of the sheet 4.

Furthermore, the first and second sheet holding members 20A and 20B are connected to first and second operation pieces 40A and 40B, respectively, which are protruding pieces used to rotate the first and second sheet holding members 20A and 20B. The first operation piece 40A protrudes from the first sheet holding member 20A toward the rear end (the second sheet holding member 20B side) on the head base 7, and the second operation piece 40B protrudes from the second sheet holding member 20B toward the front end (the first sheet holding member 20A side) on the head base 7. The first sheet holding member 20A and the first operating piece 40A rotate about the first rotation axis L1 so that when one is pushed downward, the other is lifted upward, and the second sheet holding member 20B and the second operating piece 40B rotate about the second rotation axis L2 so that when one is pushed downward, the other is lifted.

3, the first and second operation pieces 40A, 40B are disposed closer to one end in the left-right direction than the handle attachment portion 10, and the tips 41, 41 of these operation pieces 40A, 40B are adjacent to each other in the left-right direction on the head base 7. In this embodiment, the first operation piece 40A is disposed closer to the handle attachment portion 10 than the second operation piece 40B . In addition , a recess 43 for accommodating the first and second operation pieces 40A, 40B is provided on the upper surface 7a of the head base 7 at a position corresponding to the first and second operation pieces 40A, 40B. The recess 43 is a through hole that penetrates the head base 7 in the up-down direction and is defined by the rib 9. The recess 43 is composed of a first portion 43a extending from the front side surface 7b of the head base 7 to the rear side surface 7c, and a second portion 43b adjacent to the first portion 43a in the left-right direction and extending from the rear side surface 7c to the front side surface 7b, and these end portions are connected at the center in the front-rear direction to form a generally crank-like shape in a plan view. The first operating piece 40A is accommodated in the first portion 43a of the recess 43 and is rotated around the first rotation axis L1 in the first recess 43a, and the second operating piece 40B is accommodated in the second portion 43b of the recess 43 and is rotated around the second rotation axis L2 in the second recess 43. The end portion where the first portion 43a and the second portion 43b are connected is rounded in an arc shape.

3 and 9, the first operating piece 40A and the second operating piece 40B each have a base end 42 connected to the upper end of the base portion 21 of the first and second sheet holding members 20A and 20B, and the tip end 41 bent upward at an obtuse angle from the base end 42. The base end 42 is formed in a flat plate shape, and is configured so that when the first and second sheet holding members 20A and 20B are in the mounting position, its upper surface is flush with the upper surface 7a of the head base 7 (see FIG. 1). In addition, in the tip end 41, the tip end 41 of the first sheet holding member 20A extends beyond the first rotation axis L1 toward the second sheet holding member 20B side, and the tip end 41 of the second sheet holding member 20B extends beyond the second rotation axis L2 toward the first sheet holding member 20A side. The upper surface of the tip 41 is rounded in an arc shape and is located lower in the vertical direction than the upper end of the handle attachment part 10.

The first and second sheet holding members 20A and 20B further include a holding mechanism that holds them in the attached position and the released position. This is described below.

As shown in Figures 5 and 6, the first and second sheet holding members 20A and 20B further have first and second spring mounting parts 28 and 29. The first and second spring mounting parts 28 and 29 are horizontally cylindrical and provided in the left-right central part of the base plate parts 21 and 21 of the first and second sheet holding members 20A and 20B. One end and the other end of a spring member 30 consisting of a coil spring that is constantly subjected to a contraction force are engaged with the spring mounting parts 28 and 29, so that the spring member 30 is tensioned between the first and second sheet holding members 20A and 20B. The contraction force of the spring member 30 constantly acts in a direction that draws the first and second sheet holding members 20A and 20B toward each other.
In addition, notches 28a, 29a are provided on the outer peripheral surfaces of the first and second spring mounting portions 28, 29, and one end and the other end of the spring member 30 are engaged with the notches 28a, 29a, thereby suppressing lateral (left-right) displacement of the spring member 30.
The spring member 30 is housed in a concave receiving groove 31 formed inside the head base 7. This receiving groove 31 is formed in the left-right center of the head base 7 and is partitioned by the two ribs 9, 9 provided in the left-right center of the head base 7 and extending in the front-rear direction.

The first and second spring mounting parts 28, 29 rotate about the first and second rotation axes L1 and L2, respectively, due to the rotational movement of the first and second sheet holding members 20A and 20B, and are displaced upward and downward about the first and second rotation axes L1 and L2, and accordingly, the spring member 30 is also displaced upward and downward within the receiving groove 31. This will be explained in detail.

That is, when the first and second sheet holding members 20A, 20B are in the released position shown in Fig. 11, the first and second spring mounting portions 28, 29 and the spring member 30 are located above the first and second rotation axes L1, L2, and the first and second sheet holding members 20A, 20B are held in the released position by the contraction force of the spring member 30 acting at this position. When the first and second sheet holding members 20A, 20B rotate from this position toward the mounting position, the first and second spring mounting portions 28, 29 rotate in an outwardly convex arc about the first and second rotation axes L1, L2 in the direction of the dashed dotted downward arrow shown in Fig. 13. When the first and second spring mounting portions 28, 29 and the spring member 30 are positioned below the first and second pivot axes L1, L2, the contraction force of the spring member 30 acting at this position holds the first and second sheet holding members 20A, 20B in the mounting position shown in Figure 8 in which they abut against the buffer pad 6.

Conversely, when the first and second sheet holding members 20A, 20B rotate from the mounting position to the release position, the first and second spring mounting portions 28, 29 rotate in an outwardly convex arc about the first and second rotation axes L1, L2 in the direction of the dashed-dotted upward arrow shown in Fig. 13. Then, when the first and second spring mounting portions 28, 29 and the spring member 30 are positioned above the first and second rotation axes L1, L2, the contraction force of the spring member 30 acting at this position holds the first and second sheet holding members 20A, 20B in the release position shown in Fig. 11. In addition, in the attached position, the first and second sheet holding members 20A, 20B come into contact with the buffer pad 6, which obviously restricts downward rotation, but in the released position, the spring member 30 comes into contact with the top plate that forms the upper surface 7a of the head base 7, restricting upward rotation of the first and second sheet holding members 20A, 20B.

When cleaning a floor surface with the floor wiper 1 having the above-mentioned configuration, the first and second sheet holding members 20A, 20B are held in the release position to expose the front part FA and the rear part BA of the upper surface 6a of the buffer pad 6, as shown in Fig. 2. Then, the first and second sheet holding members 20A, 20B are wrapped around the entire lower surface of the buffer pad 6 and both ends of the front part FA and the rear part BA to cover them, and the first and second sheet holding members 20A, 20B are pushed downward. Then, when the first and second sheet holding members 20A, 20B are held in the mounting position, the sheet 4 is sandwiched between the first and second sheet holding members 20A, 20B and the buffer pad 6. Then, the head 3 is moved back and forth or left and right while being pressed, thereby cleaning the floor surface.

When cleaning is completed and the sheet 4 is to be removed from the head 3, the tip portions 41, 41 of the first and second operating pieces 40A, 40B are pushed downward from the upper surface 7a side of the head base 7, and the first and second sheet holding members 20A, 20B are rotated so as to be lifted upward about the first and second rotation axes L1, L2. Then, when the first and second sheet holding members 20A, 20B are rotated to the release position, the sheet holding members 20A, 20B are held in the release position, the clamped state of the sheet 4 is released, and the sheet 4 is removed.

Thus, with the flooring wiper 1, when removing the sheet 4 from the head 3 after cleaning, the first and second sheet holding members 20A, 20B can be rotated from the attached position to the released position by operating the top surface 7a of the head base 7, which does not contribute to holding the sheet 4, preventing fingertips from touching the dirty sheet 4.

In this embodiment, the buffer pad 6 and the head base 7 are fixed together by fitting the circular protrusion 8 of the head base 7 into the circular hole 6b of the buffer pad 6, but the buffer pad 6 and the head base 7 may also be attached together by an adhesive or other bonding means.
Further, although only one spring member 30 is tensioned between the first and second sheet holding members 20A, 20B, multiple spring members may be tensioned at multiple positions between the first and second sheet holding members 20A, 20B.
Alternatively, one end and the other end of the spring member 30 are attached to the first and second spring mounting portions 28, 29 of the first and second sheet holding members 20A, 20B, respectively. Alternatively, for example, two spring members may be used, with one end of the first spring member attached to the first spring mounting portion 28 of the first sheet holding member 20A and the other end attached to a predetermined position (e.g., the rear end) of the head base 7, and one end of the second spring member attached to the second spring mounting portion 29 of the second sheet holding member 20B and the other end attached to a predetermined position (e.g., the front end) of the head base 7.

REFERENCE SIGNS LIST 1 Flooring wiper 3 Head 4 Sheet 6 Cushioning pad 6a Top surface 7 Head base 7a Top surface 10 Handle attachment portion 20A First sheet holding member 20B Second sheet holding member 28 First spring attachment portion 29 Second spring attachment portion 40A First operating piece 40B Second operating piece 41 Tip portion 43 Recess FA Front portion BA Rear portion L1 First rotation axis L2 Second rotation axis

Claims (6)

A floor wiper having a head for holding a cleaning sheet at the tip of a handle, the sheet being attached to the head for cleaning floors,
The head includes a buffer pad on which the seat is attached and which has a left-right length longer than a front-to-rear length, a head base fixed to an upper surface of the buffer pad with a front portion and a rear portion of an outer periphery of the buffer pad exposed, a first sheet holding member provided at a front end portion of the head base in the front-to-rear direction, and a second sheet holding member provided at a rear end portion,
the first and second sheet holding members are attached so as to be rotatable about first and second rotation axes extending in the left-right direction, respectively, and are displaceable between an attachment position in which the first and second sheet holding members clamp the sheet between the exposed front and rear portions of the buffer pad, and a release position in which the first and second sheet holding members are separated from the buffer pad to release the clamped state of the sheet,
a first and second operation piece having a protrusion shape is connected to the first and second sheet holding members, respectively, for use in rotating the first and second sheet holding members, the first operation piece protruding from the first sheet holding member toward the rear end portion on the head base, and the second operation piece protruding from the second sheet holding member toward the front end portion on the head base, and the first and second operation pieces are operable from the upper surface side of the head base;
This flooring wiper is characterized in that the first operating piece and the second operating piece have their tip portions arranged adjacent to each other in the left-right direction on the head base, and by pushing the tip portions downward from the top side, the clamped state of the sheet is displaced from the attached position to the released position . The flooring wiper according to claim 1, characterized in that the first sheet holding member and the first operating piece rotate about the first rotation axis such that when one is pushed downward, the other is lifted upward, and the second sheet holding member and the second operating piece rotate about the second rotation axis such that when one is pushed downward, the other is lifted. A handle attachment portion for attaching the handle is provided at the center of the head base in the front-rear and left-right directions,
3. The flooring wiper according to claim 1, wherein the first and second operating pieces are disposed closer to the one end in the left-right direction than the handle attachment portion. A flooring wiper according to any one of claims 1 to 3, characterized in that the top surface of the head base is provided with a recess in which the first and second operating pieces are housed. the first and second sheet holding members have first and second spring mounting portions to which ends of spring members that constantly exert a contracting force are respectively attached,
the first and second spring mounting portions are located above the first and second pivot axes when the first and second sheet holding members are in the released position, and the first and second sheet holding members are held in the released position by the contraction force of the spring members; and when the first and second sheet holding members are in the mounted position, the first and second spring mounting portions are located below the first and second pivot axes and the first and second sheet holding members are held in the mounted position by the contraction force of the spring members;
A flooring wiper as described in any one of claims 1 to 4, characterized in that the first and second spring mounting portions are configured to rotate in an outwardly convex arc about the first and second rotation axes in response to rotation of the first and second sheet retaining members between the release position and the attached position. The flooring wiper according to claim 5, characterized in that the spring member is formed by a coil spring, and one end and the other end of the spring member are attached to the first and second spring attachment parts, respectively.

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