WIPERING DEVICE

Abstract

Problem to be solved: Easily attaching and removing leaves to and from a scraper device for a floor cleaning machine. Means of solving the problem: A scraper device (11) has a scraper (12) and a holder (13) which extends in a left-right direction and which holds the scraper. The scraper has a blade (21), a body (22) to which the blade is mounted, and a plate (23) which clamps (holds, fixes, clamps, presses) the blade against the body.

Description

TECHNICAL AREA

[0001] The techniques disclosed in the present specification relate to scraper devices (squeegees, scrapers, squeegee devices) which can be advantageously used with a floor cleaning device, such as a scrubber-dryer (scrubber machine) for cleaning floors, walkways, etc. STATE OF THE ART

[0002] A related device for scrubbing floors is disclosed in US 2022 / 0211239A1. BRIEF SUMMARY

[0003] A scraper blade can be mounted on a floor cleaning machine, such as a scrubber-dryer. The blade(s) (wiper, wiper lip(s)) of the scraper blade can be removed from the floor cleaning machine, for example, to perform maintenance on the blade. There is a need for techniques that allow for easier attachment and removal of the blade(s) from a floor cleaning machine.

[0004] It is a non-restrictive objective of the present teachings to disclose techniques for attaching and removing leaves to / from a floor cleaning device, such as a scrubber-dryer.

[0005] The above-mentioned problem is solved by a scraping device according to claim 1.

[0006] In a non-restrictive aspect of the present teachings, a scraper device (e.g., for use with a floor cleaning device, such as a scrubber-dryer) may comprise a scraper (squeegee, scraper) and a holder extending in the left-right direction that holds the scraper. The scraper may comprise a blade, a body to which the blade is mounted, and a plate that clamps (fixes, presses, holds, clamps) the blade against the body.

[0007] According to the techniques disclosed herein, the leaves can be easily attached to and removed from a floor cleaning device, such as a scrubber-dryer. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a front view schematically showing a scrubber-dryer according to a first embodiment. Fig. Figure 2 is a side view schematically showing the scrubber-dryer according to the first embodiment. Fig. Figure 3 is a perspective view from the top left front, showing the scraper device according to the first embodiment. Fig. Figure 4 is a perspective view from the top right rear, showing the scraper device according to the first embodiment. Fig. Figure 5 is a perspective view from the bottom left front, showing the scraper device according to the first embodiment. Fig. Figure 6 is a top view showing the scraping device according to the first embodiment. Fig. Figure 7 is a bottom view showing the scraper device according to the first embodiment. Fig. Figure 8 is a front view showing the scraper device according to the first embodiment. Fig. Figure 9 is a rear view showing the scraper device according to the first embodiment. Fig. Figure 10 is a left side view showing the scraper device according to the first embodiment. Fig. Figure 11 is a right-side view showing the scraper device according to the first embodiment. Fig. Figure 12 is a perspective exploded view from the top left front, showing the scraper device according to the first embodiment. Fig. Figure 13 is a perspective exploded view from the top right rear, showing the scraper device according to the first embodiment. Fig. Figure 14 is a perspective exploded view from the top left front, showing a holder according to the first embodiment. Fig. Figure 15 is a perspective exploded view from the top left front, showing an area of ​​the holder according to the first embodiment. Fig. Figure 16 is a perspective exploded view from the top left front, showing a scraper according to the first embodiment. Fig. Figure 17 is a perspective exploded view from the top right rear, showing the scraper according to the first embodiment. Fig. Figure 18 is a perspective view from the top left front, showing an area of ​​the scraper according to the first embodiment. Fig. Figure 19 is a perspective view from the top right rear, showing an area of ​​the scraper according to the first embodiment. Fig. Figure 20 is a left side view showing the scraper according to the first embodiment. Fig. Figure 21 is a cross-sectional view showing the scraper device according to the first embodiment. Fig. Figure 22 is a cross-sectional view showing the scraper device according to the first embodiment. Fig. Figure 23 is a cross-sectional view showing the scraper device according to the first embodiment. Fig. Figure 24 is a cross-sectional view showing an area of ​​the scraper device according to the first embodiment. Fig. Figure 25 is a cross-sectional view showing an area of ​​the scraper device according to the first embodiment. Fig. Figure 26 is a cross-sectional view showing an area of ​​the scraper device according to the first embodiment. Fig. Figure 27 is a cross-sectional view showing an area of ​​the scraper device according to the first embodiment. Fig. Figure 28 is a perspective view from the top left front, showing the scraper according to the first embodiment. Fig. Figure 29 is a cross-sectional view showing the wiper according to the first embodiment. Fig. Figure 30 is a perspective view from the top left front, which serves to describe a mounting method of the wiper according to the first embodiment. Fig. Figure 31 is a perspective view from the top left front, which serves to describe an assembly method of the wiper and the holder according to the first embodiment. Fig. Figure 32 is a perspective view from the top left front, showing a scraper device according to a second embodiment. Fig. Figure 33 is a top view showing the scraper device according to the second embodiment. Fig. Figure 34 is a perspective exploded view from the top left front, showing a holder according to the second embodiment. Fig. Figure 35 is a perspective view from the top left front, showing an area of ​​the holder according to the second embodiment. Fig. Figure 36 is a cross-sectional view showing the scraper device according to the second embodiment. Fig. Figure 37 is a cross-sectional view showing an area of ​​the scraper device according to the second embodiment. Fig. Figure 38 is a cross-sectional view showing an area of ​​the scraper device according to the second embodiment. Fig. Figure 39 is a perspective view from the top left front, showing a scraper device according to a third embodiment. Fig. Figure 40 is a top view showing the scraper device according to the third embodiment. Fig. Figure 41 is a perspective exploded view from the top left front, showing a holder according to the third embodiment. Fig. Figure 42 is a perspective exploded view from the top left front, showing an area of ​​the holder according to the third embodiment. Fig. Figure 43 is a cross-sectional view showing the scraper device according to the third embodiment. Fig. Figure 44 is a cross-sectional view showing an area of ​​the scraper device according to the third embodiment. Fig. Figure 45 is a cross-sectional view showing an area of ​​the scraper device according to the third embodiment. Fig. Figure 46 is a perspective exploded view from the top left front, showing a scraper device according to a further embodiment. DETAILED DESCRIPTION OF EXECUTION FORMS

[0008] As described above, a scraper device can comprise a scraper and a holder extending in a left-right direction that holds the scraper. The scraper can comprise one or more blades, a body to which the blade(s) is / are mounted, and one or more plates that clamp (hold, fix, clamp, or press) the blade(s) against the body.

[0009] Due to the configuration described above, the sheet(s) can be easily attached and removed by attaching and removing the plate(s) respectively.

[0010] In one or more embodiments, the sheet (sheets) may have a first sheet and a second sheet. The plate(s) may have a first plate that clamps (holds, fixes, clamps, presses) the first sheet against a front surface of the body, and a second plate that clamps (holds, fixes, clamps, presses) the second sheet against a rear surface of the body.

[0011] Due to the configuration described above, the first and second sheets can be easily attached and removed.

[0012] In one or more embodiments, the body can have one or more projections which are (opposite) a surface or surfaces that are (each) opposite the leaf(s). The leaf(s) can have one or more leaf openings in which at least one region or regions of the projection(s) are (each). The plate(s) can have one or more plate recesses in which at least one region or regions of the projection(s) are (each).

[0013] Due to the configuration described above, the leaf(s) can be easily attached and removed by fitting the leaf opening(s) onto the projection(s) and removing the leaf opening(s) from the projection(s). Similarly, the plate(s) can be easily attached and removed by fitting the plate recess(es) onto the projection(s) and removing the plate recess(es) from the projection(s).

[0014] In one or more embodiments, the projection (each projection) may have a projection recess which is recessed downwards from a lower surface of the projection, and a large-diameter part which is arranged between the surface opposite the blade and the projection recess. The large-diameter part(s) may be arranged (inserted) in the blade opening(s), and the plate recess(es) may be fitted onto the projection recess(es) from above the projection (projections).

[0015] Due to the configuration described above, after mounting the blade(s) on the body, the blade(s) can be attached (fixed) to the body by means of the plate(s).

[0016] In one or more embodiments, in a state in which the projection (the projections) (in particular the large diameter part of the same) has been arranged (inserted) in the leaf opening (the leaf openings) and in the plate recess(s) (each), the upper end surface of the body and the upper end surface(s) of the plate(s) may be arranged in the same plane.

[0017] Due to the configuration described above, tilting (tipping) of the disk(s) is prevented or at least minimized.

[0018] In one or more embodiments, in a state in which the projection (the projections) is arranged in the leaf opening (the leaf openings) and the plate recess (the plate recesses) (each), the lower end of the leaf (the leaves) may be arranged lower (extend further downwards) than the lower end of the body and the lower end (the lower ends) of the plate(s).

[0019] Due to the configuration described above, the leaf (leaves) can push or scrape (collect) the collecting liquid on the surface being cleaned.

[0020] In one or more embodiments, a plurality of projections can be provided on the body spaced apart in the left-right direction. A plurality of each of the leaf openings and plate recesses can be provided on the plate(s) spaced apart in the left-right direction, so that a projection can be inserted into each leaf opening and plate recess.

[0021] Due to the configuration described above, the sheet(s) and the plate(s) can be stably attached to the body.

[0022] In one or more embodiments, the dimension (e.g. length) of the leaf opening(s) can be smaller than the dimension (e.g. length) of the plate recess(s) in the left-right direction.

[0023] Due to the configuration described above, it is easy to fit the plate recess(s) onto the projection(s).

[0024] In one or more embodiments, the dimension (e.g. height) of the leaf opening(s) can be larger than the dimension (e.g. height) of the plate recess(s) in the top-bottom direction.

[0025] Due to the configuration described above, it is easy to fit the protrusion(s) into the leaf opening(s).

[0026] In one or more embodiments, the projections can protrude from each of the front and rear surfaces of the body.

[0027] Due to the configuration described above, two sheets can be stored on the front surface and the rear surface of the body, respectively.

[0028] In one or more embodiments, the sheet (sheets) may be made of an elastomeric material, such as rubber, and the plate(s) may be made of a polymer (synthetic resin) or metal.

[0029] Due to the configuration described above, the blade(s) can effectively push or scrape (collect) the collecting liquid on the surface being cleaned, and sufficient strength of the scraper device can be ensured.

[0030] In one or more embodiments, the body may have a suction opening.

[0031] Due to the configuration described above, the collecting liquid on the surface being cleaned can be drawn up (suctioned) through the suction opening.

[0032] In one or more embodiments, the holder may have a holder recess into which the wiper is inserted from below.

[0033] Due to the configuration described above, the holder can hold the wiper securely.

[0034] In one or more embodiments, the holder recesses can be arranged at both ends of the holder in a left-right direction.

[0035] Due to the configuration described above, the holder can hold the wiper more stably (more securely).

[0036] In one or more embodiments, the body may have one or more projections which project from a surface or surfaces opposite the leaf(s). The leaf(s) may have one or more leaf openings into which at least one region or regions of the projection(s) is arranged. The plate(s) may have one or more plate recesses into which at least one region or regions of the projection(s) is arranged.The projection(s) can have one or more projection recesses, which are recessed downwards from an upper surface of the projection(s), and a large-diameter part located between the surface(s) opposite the blade(s) and the projection recess(es). By fitting the plate recess(es) onto the projection recess(es) from above the projection(s) in a state where the large-diameter part(s) is located in the blade opening(s), the blade(s) can be clamped (held, inserted) between the plate(s) and the body.

[0037] Due to the configuration described above, after mounting the blade(s) to the body, the blade(s) (each) can be attached to the body with the plate(s).

[0038] In one or more embodiments, the wiper device may further comprise a movable component, which is movably mounted on the holder and has one or more engagement parts configured to engage with one or more engaged parts provided on the body; a first preloading component, which preloads the movable component in the direction of an engagement position of the engagement part(s) with the engaged part(s); and a second preloading component, which preloads the wiper in the direction of a separation position of the wiper from the holder. By bringing (moving) the wiper towards the holder against the preload force of the second preloading component, the engagement part(s) and the engaged part(s) come into engagement, so that the wiper is attached to the holder.

[0039] Due to the configuration described above, by lifting the wiper against the preload force of the second preloading component, so that it is brought towards the holder, the engagement part(s) and the engaged part(s) engage due to the preload force of the first preloading component and remain engaged, so that the wiper is firmly mounted on the holder.

[0040] Embodiments of the present disclosure are described below with reference to the drawings, but the present disclosure is not limited to these embodiments. The components of the embodiments described below can be combined where appropriate. Furthermore, some components may also be excluded.

[0041] In the embodiments, the positional relationships between the parts are described using the terms "left", "right", "front", "back", "top", and "bottom". These terms indicate relative positions or directions with respect to the center of the scraper device. First embodiment

[0042] A first embodiment of the present teachings will now be described. scrubber-dryer

[0043] Fig. Figure 1 is a front view schematically showing a scrubber-dryer (scrubbing machine) (floor cleaning machine) 1 according to the first embodiment. Fig. Figure 2 is a side view schematically showing the scrubber-dryer 1 according to the first embodiment.

[0044] The scrubber-dryer 1 cleans a surface, e.g., a floor, a walkway, etc., using a cleaning fluid and brushes 3. A floor surface is referred to herein, by way of example, as the surface to be cleaned. While the surface is being cleaned, the scrubber-dryer 1 also collects (vacuumes off) the cleaning fluid that was applied to the surface to be cleaned. The cleaning fluid collected by the scrubber-dryer 1 is a dirty fluid containing dirt, debris, etc., that was present on the surface to be cleaned. In the present embodiment, the cleaning fluid collected by the scrubber-dryer 1A is referred to as a "collecting fluid." Thus, the collecting fluid is a dirty fluid containing the dirt, debris, etc., that was present on the surface to be cleaned (e.g., the floor).

[0045] As in Fig. 1 and Fig. As shown in Figure 2, the scrubber-dryer 1 has a base component 2, brushes 3, brush motors 4, a guide component 5, a handle 6, a feed tank 7, a collection tank 8, a power source 9, a suction motor 10 and a scraper device (wiper device) 11.

[0046] The base component 2 is a plate-shaped component. The base component 2 supports the brush motors 4, the collection tank 8, and the suction motor 10. The brush motors 4 rotatably support the brushes 3 and drive them. At least one section of the scraper device 11 is located behind the brushes 3. The scraper device 11 is mounted on the base component 2.

[0047] The brushes 3 contact the surface to be cleaned. The brushes 3 are positioned lower than the base component 2. Thus, the brushes 3 are located at the lower end of the scrubber-dryer 1. Each of the brush motors 4 generates a rotational force that rotates one of the brushes 3. The brush motors 4 are each coupled (connected) to the brushes 3. At least parts of the brush motors 4 are positioned higher than the base component 2. In the present embodiment, two brushes 3 are provided (arranged) in the left-right direction. Accordingly, two brush motors 4 are provided. The two brushes 3 are each connected to the two brush motors 4.

[0048] The guide element 5 is a rod-shaped component that is elongated in the top-bottom direction. The lower end of the guide element 5 is coupled (connected) to the base element 2. The lower end of the guide element 5 can be connected to the base element 2 by means of a pivot joint mechanism (not shown). The pivot joint mechanism allows the guide element 5 to be inclined (tilted) relative to the base element 2. Therefore, the guide element 5 can be operated by a user in such a way that it is inclined at one or more angles relative to the base element 2.

[0049] The handle 6 is located at the upper end of the guide element 5. The handle 6 is configured to be gripped by the user. The guide element 5 extends downwards from the handle 6. The handle 6 is a structural component that is elongated in the left-right direction.

[0050] The supply tank 7 stores the cleaning fluid, which is supplied to the surface to be cleaned. The supply tank 7 is mounted on the guide component 5. The cleaning fluid stored in the supply tank 7 is supplied to the surface to be cleaned via a supply line, which is not shown. In the present embodiment, the cleaning fluid is supplied to the surface to be cleaned by the action of gravity. That is, the cleaning fluid can fall onto the surface to be cleaned under its own weight. The surface is cleaned by rotating the brushes 3 in a state in which the cleaning fluid is being supplied to the surface to be cleaned.

[0051] The collection tank 8 stores the collected fluid that has been drawn (suctioned) from the surface being cleaned. The collection tank 8 is mounted on the base component 2. The suction motor 10 is driven, so that the collected fluid is drawn (suctioned) from the surface being cleaned. As described above, the collected fluid contains the cleaning fluid that is fed from the feed tank 7 onto the surface being cleaned, and the dirt, debris, etc., on the surface being cleaned. The scrubber-dryer 1 has a suction opening 24 that is configured to face the surface being cleaned. The suction opening 24 is provided (defined) in the scraper device 11. The suction motor 10 is driven, so that suction is generated at the suction opening 24. The suction opening 24 draws off the collected fluid that is present on the surface being cleaned.The collected liquid, which is drawn off from the (through the) suction opening 24, is fed to the collection tank 8 via a collection line, which is not shown.

[0052] The power source 9 comprises at least one battery pack. The power source 9 can be a general-purpose battery pack or battery cassette that can be used as a power source for various types of electrical devices. For example, the power source 9 can be configured to be used as a power source for power tools. Additionally or alternatively, the power source 9 can be configured to be used as a power source for electrical devices other than power tools. The power source 9 preferably comprises at least one lithium-ion battery cell, and preferably a plurality of battery cells. Although lithium-ion batteries are currently preferred, other battery chemistries, such as solid-state battery cells, can be advantageously used with the present teachings. The power source 9 is preferably a rechargeable battery.The power source 9 can have two or more discrete (separate) battery packs, designed for example for power tools, and which are electrically connected in series or parallel when mounted on battery mounting parts (e.g. the connections for connecting to the battery terminals and engagement structures, such as rails for holding the battery pack on the scrubber dryer 1) of the scrubber dryer 1.

[0053] The brush motors 4 and the suction motor 10 are each electric motors, preferably brushless motors. The brush motors 4 and the suction motor 10 are each driven by (using) power supplied by the power source 9.

[0054] The scraper 11 pushes, wipes, or scrapes (captures) the collected liquid on the surface being cleaned, so that the dirty liquid (collected liquid), or at least a substantial part of it, remains beneath the scrubber 1 during a cleaning operation (i.e., while the scrubber 1 is moving along the surface to be cleaned), allowing the dirty liquid to be effectively sucked into the collection tank 8. At least part of the scraper 11 is located behind the brushes 3. As described below, the scraper 11 has blades 21 that push, wipe, or scrape (capture) the collected liquid, so that the collected liquid, or at least a substantial part of it, can be effectively sucked up through the suction opening 24. The spread of the collected liquid to the rear of the scrubber 1 is limited by the blades 21.The amount of collected liquid remaining on the surface after cleaning is limited or reduced, since at least a substantial part of the collected liquid can be effectively extracted via the suction opening 24. scraper device

[0055] Fig. Figure 3 is a perspective view from the top left front and shows the scraper device 11 according to the first embodiment. Fig. Figure 4 is a perspective view from the top right rear and shows the scraper device 11 according to the first embodiment. Fig. Figure 5 is a perspective view from the bottom left front and shows the scraper device 11 according to the first embodiment. Fig. Figure 6 is a top view showing the scraper device 11 according to the first embodiment. Fig. Figure 7 is a bottom view showing the scraper device 11 according to the first embodiment. Fig. Figure 8 is a front view showing the scraper device 11 according to the first embodiment. Fig. Figure 9 is a rear view showing the scraper device 11 according to the first embodiment. Fig. Figure 10 is a left side view showing the scraper device 11 according to the first embodiment. Fig. Figure 11 is a right side view showing the scraper device 11 according to the first embodiment. Fig. Figure 12 is a perspective exploded view from the top left front and shows the scraper device 11 according to the first embodiment. Fig. Figure 13 is a perspective exploded view from the top right rear and shows the scraper device 11 according to the first embodiment.

[0056] The wiper device 11 comprises a wiper 12 and a holder 13, which holds the wiper 12. The wiper 12 generally extends in the left-right direction with a curvature, such that the wiper 12 has a concave shape pointing forward. The holder 13 also generally extends in the left-right direction with a curvature, preferably the same curvature as that of the wiper 12. The holder 13 is attached to the base component 2. The wiper 12 is attached to and removed from the holder 13 as described later. holder

[0057] Fig. Figure 14 is a perspective exploded view from the top left front and shows the holder 13 according to the first embodiment. Fig. Figure 15 is a perspective exploded view from the top left front and shows an area of ​​the holder 13 according to the first embodiment and corresponds to an enlarged view of an area of Fig. 14.

[0058] The holder 13 comprises a holder body 14, a cover 15, and screws 16. The holder body 14 is generally elongated in the left-right direction with a curvature. The holder body 14 has a bearing element 17, which supports a movable component 30 and a first preloading component 40, a pair of arms 18, which are arranged on the left and right sides of the bearing element 17 respectively, holder recesses 19, which are provided at the ends of the arms 18, and three rollers 20.

[0059] In the left-right direction, the bearing element 17 is arranged in the central part of the holder body 14. The arm 18 on the left side of the bearing element 17 extends towards the left side while curving (bending) forward. The right arm 18 of the bearing element 17 extends towards the right side while also curving (bending) forward.

[0060] The retaining recesses 19 are arranged at opposite ends of the holder 13 in a left-right direction. Specifically, the left retaining recess 19 is located at the left end of the arm 18 on the left side of the bearing part 17. The right retaining recess 19 is located at the right end of the arm 18 on the right side of the bearing part 17. The retaining recesses 19 have a concave shape facing upwards. The wiper 12 is inserted into the retaining recesses 19 from below.

[0061] The rollers 20 are arranged at the front of the left end of the arm 18, at the front of the right end of the arm 18, and at the rear of the bearing part 17. It is noted that, alternatively, the rollers 20 may be arranged at the rear of the left end of the arm 18, at the rear of the right end of the arm 18, and at the rear of the bearing part 17.

[0062] The movable component 30 is movably mounted in (on) the holder 13. Specifically, the movable component 30 is mounted in (on) the bearing part 17 such that it is movable in the forward-backward direction. The movable component 30 has a base part 31, an actuating part 32 which projects upward from the upper surface of the base part 31, a pair of arms 33 which extend from the front end of the base part 31, and engagement parts 34 which are provided at the front ends of the arms 33. The left arm 33 extends toward the left side while bending forward. The right arm 33 extends toward the right side while also bending forward. The engagement parts 34 are each provided at the front end of the left arm 33 and the front end of the right arm 33. Thus, two engagement parts 34 are arranged in the left-right direction.The actuated area 32 is arranged between the two engagement parts 34 in the left-right direction. Preferably, an actuated part 32 is arranged on the middle part of the holder 13 in the left-right direction.

[0063] The bearing element 17 comprises a first receiving element 17A, in which the base element 31 is received, a second receiving element 17B, in which the arms 33 are received, a rib 17C, within which the first prestressing element 40 is arranged, and an opening 17D. The rib 17C is arranged such that it substantially surrounds the first prestressing element 40. A cutout 17E is provided in the front face of the rib 17C and exposes the front end of the first prestressing element 40.

[0064] The first preloading element 40 is preferably a coil spring. The first preloading element 40 preloads the movable element 30 forward, although other types of elastic, spring-like structures can be used instead of a coil spring, such as a leaf spring or an elastomeric material (e.g., an elastomeric block). The rear end of the first preloading element 40 contacts at least a (rear) region of the rib 17C. The front end of the first preloading element 40 is exposed via the cutout 17E and contacts at least a region of the movable element 30.

[0065] The cover 15 has a first cover part 15A, which covers the first receiving part 17A, a second cover part 15B, which covers the second receiving part 17B, a guide opening 15C provided in the first cover part 15A, which guides the actuating part 32 in the front-back direction, and an opening 15D. At least a portion of the actuating part 32 is located inside the guide opening 15C. The upper end of the actuating part 32 projects upward from (through) the guide opening 15C. The actuating part 32 projects upward from the upper surface of the holder 13 (the upper surface of the cover 15). It is noted that, alternatively, the actuating part 32 can project to the left from the left surface of the holder 13 or to the right from the right surface of the holder 13. The actuated part 32 can protrude from the holder 13 to one or both sides from the left and right sides.

[0066] Three screws 16 are provided. The three screws 16 fasten the bearing part 17 and the cover 15 together. When the bearing part 17 and the cover 15 are fastened, the opening 17D and the opening 15D are aligned. The screws 16 are inserted from below into screw holes 17F provided in the bearing part 17 and then into screw holes in screw bosses 15F provided in the cover 15. scraper

[0067] Fig. Figure 16 is a perspective exploded view from the top left front and shows the wiper 12 according to the first embodiment. Fig. Figure 17 is a perspective exploded view from the top right rear and shows the wiper 12 according to the first embodiment. Fig. Figure 18 is a perspective view from the top left front and shows an area of ​​the scraper 12 according to the first embodiment and corresponds to an enlarged view of an area of Fig. 12. Fig. Figure 19 is a perspective view from the top right rear and shows an area of ​​the scraper 12 according to the first embodiment and corresponds to an enlarged view of an area of Fig. 13. Fig. Figure 20 is a left side view showing the scraper 12 according to the first embodiment.

[0068] At least one section of the wiper 12 is positioned lower (extends further downwards) than the holder 13. The wiper 12 comprises blades 21, a body 22 to which the blades 21 are mounted, and plates 23 which clamp (hold, clamp, press, fix, clamp, or sandwich-like surround) the blades 21 against the body 22. That is, the blades 21 are each inserted (nested) or sandwiched between the body 22 and the plates 23 and are thus held in place by them.

[0069] The body 22 generally extends in the left-right direction with a curve. The body 22 is preferably made of a polymer (synthetic resin). However, the body 22 can instead be made of metal, e.g., aluminum, an aluminum alloy, or a similar lightweight, corrosion-resistant metal. The body 22 has a suction opening 24. In the left-right direction, the suction opening 24 is located in (defined by) the central part of the body 22. The suction opening 24 is positioned on the lower surface of the body 22 such that it faces the surface to be cleaned. A tube 25 extends upwards from the upper part of the central part of the body 22. The suction opening 24 is connected to a suction flow path of the tube 25. Thus, the suction opening 24 is fluidically connected to the collection tank 8 via the suction flow path defined by the tube 25.

[0070] The blades 21 are configured to touch (be in contact with) the surface being cleaned. The blades 21 push, wipe, or scrape (capture / collect) the collecting liquid on the surface being cleaned. The blades 21 are preferably made of a rubber (saturated or unsaturated), although other types of elastomeric materials, such as polyurethane, can be used to form the blades 21. Two blades 21 are preferably provided. In this case, the blades 21 have a first blade 21A facing the front surface of the body 22 and a second blade 21B facing the rear surface of the body 22.

[0071] The body 22 has a plurality of bars 28 which project upwards. The upper ends of the bars 28 are positioned higher than the upper end (surface) of the body 22. The bars 28 are arranged on the left and right sides of the tube 25. Second prestressing components 50 are mounted on the bars 28. The arms 18 of the holder 13 are provided with openings 18A (see e.g. Fig. 13), into which the upper ends of the rods 28 are each inserted.

[0072] The body 22 has engaged parts 29, into which the engagement parts 34 of the movable component 30 engage. The same number of engaged parts 29 and engagement parts 34 are provided. The engagement parts 34 and the engaged parts 29 are arranged in the left-right direction. Preferably, two of each of the engagement parts 34 and the engaged parts 29 are arranged in the left-right direction. The engaged parts 29 are each arranged on both the left and right sides of the tube 25. The engagement parts 34 and the engaged parts 29 are each arranged on both sides in the left-right direction of the tube 25, which defines a section of the suction flow path. The engaged parts 29 are arranged higher than the upper surface of the body 22.In the left-right direction, the left-hand engagement part 29 is arranged between the left-hand pipe 28 and the pipe 25. In the left-right direction, the right-hand engagement part 29 is arranged between the right-hand pipe 28 and the pipe 25.

[0073] The engagement parts 34 and the engaged parts 29 each have (complementary, matching) hook shapes that interlock (fit, join) with one another. In other words, the engagement parts 34 and the engaged parts 29 can have corresponding shapes (e.g., L-shapes) configured to fit together in a form-fit or interference fit. By hooking (interlocking, joining) the engagement parts 34 of the movable component 30 onto (with) the engaged parts 29 provided on the body 22, the wiper 12 is securely attached to (or held by) the holder 13 in a removable manner. The first prestressing component 40 prestresses the movable component 30 in a direction (here forwards) which causes the engagement parts 34 to engage (fit together) with the engaged parts 29.

[0074] The body 22 has a plurality of projections 26 that project from the surfaces opposite (facing) the leaves 21. That is, the projections 26 each project from the front surface and the rear surface of the body 22. Specifically, some of the projections 26 project forward from the front surface of the body 22, and some of the projections 26 project backward from the rear surface of the body 22. The projections 26 are spaced apart in the left-right direction. In the left-right direction, the central part of the body 22 is provided with a central projection 27, the shape of which differs from that of the projections 26. It is noted that the shape of the central projection 27 can be the same as the shape of the projection 26.

[0075] The plates 23 each clamp (hold, fix, clamp / tighten) the leaves 21 against the body 22. This secures the leaves 21 to the body 22 via the plates 23. The plates 23 are made of a polymer (synthetic resin), preferably a relatively rigid polymer. It is noted that the plates 23 could instead be made of a metal, e.g., aluminum, an aluminum alloy, or a similar lightweight, corrosion-resistant metal. Two plates 23 are preferably provided. In this case, the plates 23 comprise a first plate 23A, which clamps (holds, fixes, clamps, tightens) the first leaf 21A against the front surface of the body 22, and a second plate 23B, which clamps (holds, fixes, clamps, tightens) the second leaf 21B against the rear surface of the body 22.

[0076] The leaves 21 each have leaf openings 211, into which at least areas of the projections 26 are arranged (inserted), and a central leaf opening 212, into which at least an area of ​​the central projection 27 is arranged (inserted).

[0077] The plates 23 each have plate recesses 231, into which at least areas of the projections 26 are arranged (inserted), and a central plate recess 232, into which at least an area of ​​the central projection 27 is arranged (inserted). Mechanism for attaching and removing the holder and wiper

[0078] Fig. Figure 21 is a cross-sectional view showing the stripping device 11 according to the first embodiment and corresponds to a cross-sectional view in the direction of the arrows at line AA in Fig. 3. Fig. Figure 22 is a cross-sectional view showing the scraper device 11 according to the first embodiment and corresponds to a cross-sectional view in the direction of the arrows at line BB in Fig. 3. Fig. Figure 23 is a cross-sectional view showing the stripping device 11 according to the first embodiment and corresponds to a cross-sectional view in the direction of the arrows at line CC in Fig. 3.

[0079] As in Fig. As shown in Figure 21, the movable component 30 has a receiving recess 35 which is concave from the lower side of the movable component 30 upwards. As noted above, the first preloading component 40 is or preferably has a coil spring. The first preloading component 40 is received within the rib 17C. The rib 17C is arranged inside the receiving recess 35. The rear end of the first preloading component 40 contacts a region of the rib 17C which is located behind the first preloading component 40. The front end of the first preloading component 40 is exposed by (over) the cutout 17E, which is provided at the front end of the rib 17C. The front end of the first prestressing component 40 contacts, via the cutout 17E, a region of the inner surface 36 of the receiving recess 35, which is located on the front side of the first prestressing component 40. The first prestressing component 40 prestresses the movable component 30 forwards.Specifically, the first prestressing component 40 prestresses the movable component 30 forward in such a way that the engagement parts 34 engage with the engaged parts 29.

[0080] The actuated part 32 is located behind the engaged parts 29. The first preloading component 40 preloads the movable component 30 forward. The engagement of the engaged parts 29 with the engagement parts 34 is released by the user, who actuates (manually moves) the actuated part 32 backward.

[0081] The second preloading elements 50 preload the wiper 12 in a direction (i.e., downwards) that causes the wiper 12 to separate from the holder 13. At least one portion of the wiper 12 is positioned lower (extends further downwards) than the holder 13. A plurality of the second preloading elements 50 are arranged in the left-right direction. In the present embodiment, two preloading elements 50 are arranged in the left-right direction. The second preloading elements 50 are, or preferably comprise, coil springs.

[0082] Fig. Figure 24 is a cross-sectional view showing an area of ​​the stripping device 11 according to the first embodiment and shows the state in which the engagement parts 34 and the engaged parts 29 are in engagement. Fig. Figure 25 is a cross-sectional view showing an area of ​​the stripping device 11 according to the first embodiment, and shows the state in which the engagement of the engagement parts 34 and the engaged parts 29 is released, i.e. the state in which the engagement parts 34 are unlocked from the engaged parts 29.

[0083] When the user moves the actuating part 32 backward (manually), the engagement of the engagement parts 34 with the engaged parts 29 is released. Conversely, when the user stops actuating the actuating part 32 (i.e., the user releases the actuating part 32), the movable component 30 moves forward due to the preload force of the first preloading component 40, causing the engagement parts 34 to engage with the engaged parts 29. The engagement parts 34 and the engaged parts 29 each have, for example, hook shapes that interlock with each other. The engagement parts 34 engage with the engaged parts 29 after being inserted into the space beneath the engaged parts 29.

[0084] Fig. Figure 26 is a cross-sectional view showing an area of ​​the scraper device 11 according to the first embodiment, and corresponds to an enlarged view of an area of Fig. 23. Fig. Figure 27 is a cross-sectional view of an area of ​​the scraper device 11 according to the first embodiment and shows the state in which the scraper 12 has been separated from the holder 13.

[0085] The second prestressing components 50 are each supported on the bars 28 of the body 22. Each bar 28 has a small-diameter section 28A, onto which a second prestressing component 50 is fitted, and a large-diameter section 28B, which is positioned lower than the small-diameter section 28A. The lower end of the second prestressing component 50 contacts a support surface (step, shoulder) 28C at the boundary between the lower end of the small-diameter section 28A and the upper end of the large-diameter section 28B. The upper end of the second prestressing component 50 contacts the lower surface of the arm 18 of the holder 13. It is noted that the second prestressing component 50 can alternatively be supported by the holder 13.

[0086] As in Fig. As shown in Figure 27, to remove the wiper 12 from the holder 13, the actuating part 32 is actuated (moved) to the rear against the preload force of the first preloading component 40, thereby releasing the engagement of the engagement parts 34 with the engaged parts 29, so that the wiper 12 separates (is moved away) from the holder 13 due to the preload force of the second preloading component 50.

[0087] When the wiper 12 is to be mounted (attached) to the holder 13, the wiper 12 is moved (moved) towards the holder 13 from below against the preload force of the second preloading component 50, causing the engagement parts 34 and the engaged parts 29 to engage due to the preload force of the first preloading component 40. Consequently, the wiper 12 is fixed (attached, fastened) to the holder 13. Leaf attachment mechanism

[0088] Fig. Figure 28 is a perspective view from the top left front and shows the wiper 12 according to the first embodiment and corresponds to an enlarged view of an area of Fig. 12. Fig. Figure 29 is a cross-sectional view showing the wiper 12 according to the first embodiment and corresponds to a cross-sectional view in the direction of the arrows at line DD in Fig. 12. Fig. Figure 30 is a perspective view from the top left front and serves to describe a mounting method of the wiper 12 according to the first embodiment. Fig. Figure 31 is a perspective view from the top left front and serves to describe the assembly procedure of the wiper 12 and the holder 13 according to the first embodiment.

[0089] The leaf openings 211 and the plate recesses 231 are spaced apart in the left-right direction such that a projection 26 is provided in each leaf opening 211 and plate recess 231. In the left-right direction, the dimension of the leaf openings 211 is smaller than the dimension of the plate recesses 231. In the top-bottom direction, the dimension of the leaf openings 211 is larger than the dimension of the plate recesses 231.

[0090] The projections 26 each have a projection recess 26A, which is recessed downwards from the upper surface of the projection 26, and a large-diameter portion 26B, which is arranged between the surface (front surface or rear surface) of the body 22 that faces the respective sheet 21 and the projection recess 26A. The central projection 27 has recesses 27A, which are provided on the left and right sides of the central projection 27, respectively.

[0091] The large-diameter parts 26B are each arranged in the leaf openings 211. The plate recesses 231 are fitted onto the projecting recesses 26A from above the projections 26. In a state in which the large-diameter parts 26B have each been inserted into the leaf openings 211, the plate recesses 231 are then fitted (moved) onto the projecting recesses 26A from above the projections 26, thereby clamping (holding, sandwiching, sandwiching, nesting, clamping, or jamming) the leaves 21 between the body 22 and the plates 23.

[0092] In the present embodiment, when the projections 26 are arranged in the leaf openings 211 and the plate recesses 231, the upper end surface of the body 22 and the upper end surfaces of the plates 23 are arranged in the same plane. In this state, the lower ends of the leaves 21 are lower (extend further downwards) than the lower ends of the body 22 and the lower ends of the plates 23. Effects

[0093] As described above, in the present embodiment the stripping device 11 comprises the stripper 12 and the holder 13, which extends in the left-right direction and holds the stripper 12. The stripper 12 comprises the (two) leaves 21, the body 22 on which the leaves 21 are mounted, and the (two) plates 23, which clamp (hold, fix) the leaves 21 against the body 22.

[0094] Due to the configuration described above, the leaves 21 can be easily attached and removed by attaching or removing the plates 23.

[0095] In the present embodiment, the leaves 21 have a first leaf 21A and a second leaf 21B. The plates 23 have a first plate 23A, which clamps the first leaf 21A against the front surface of the body 22, and a second plate 23B, which clamps the second leaf 21B against the rear surface of the body 22.

[0096] Due to the configuration described above, the first sheet 21A and the second sheet 21B can be easily attached and removed.

[0097] In the present embodiment, the body 22 has projections 26 which protrude from opposite (e.g., front and rear) surfaces of the body 22, facing the leaves 21. Each leaf 21 has a leaf opening 211 in which at least portions of the projections 26 are arranged. Each plate 23 has a plate recess 231 in which at least portions of the projections 26 are arranged.

[0098] Due to the configuration described above, the leaves 21 can be easily attached and removed by fitting the leaf openings 211 onto the projections 26 or by removing the leaf openings 211 from the projections 26. Similarly, the plates 23 can be easily attached and removed by fitting the plate recesses 231 onto the projections 26 or by removing the plate recesses 231 from the projections 26.

[0099] In the present embodiment, each of the projections 26 has a projection recess 26A, which is recessed downwards from the upper surface of the projection 26, and a large-diameter section 26B, which is arranged between the surface opposite the respective sheet 21 and the projection recess 26A. The large-diameter sections 26B are arranged in the sheet openings 211, and the plate recesses 231 are fitted onto the projection recesses 26A from above the projections 26.

[0100] Based on the configuration described above, after mounting the leaves 21 on the body 22, the leaves 21 can be attached to the body 22 by means of the plates 23.

[0101] In the present embodiment, in a state in which the projections 26 are arranged in the leaf openings 211 and in the plate recesses 231, the upper end surface of the body 22 and the upper end surfaces of the plates 23 are arranged in the same (horizontal) plane, i.e. in a plane that extends in the left-right direction and front-back direction.

[0102] Due to the configuration described above, tilting (tipping) of the plates 23 can be prevented or at least minimized.

[0103] In the present embodiment, in a state in which the projections 26 are arranged in the leaf openings 211 and the plate recesses 231, the lower ends of the plates 23 are lower (extend further downwards) than the lower ends of the body 22 and the lower ends of the plates 23 are arranged in the top-bottom direction.

[0104] Due to the configuration described above, the leaves 21 can effectively push, wipe or scrape (collect) the collecting liquid on the surface being cleaned.

[0105] In the present embodiment, a plurality of projections 26 are provided spaced apart in the left-right direction. A plurality of each of the leaf openings 211 and the plate recesses 231 are provided spaced apart in the left-right direction, such that a projection 26 is arranged in each leaf opening 211 and plate recess 231.

[0106] Due to the configuration described above, the leaves 21 and the plates 23 can be stably (securely) attached to the body 22.

[0107] In the present embodiment, the dimension (e.g. length) of the leaf openings 211 is smaller in the left-right direction than the dimension (e.g. length) of the plate recesses 231.

[0108] Due to the configuration described above, it is easy to fit the plate recesses 231 onto the projections 26.

[0109] In the present embodiment, the dimension (e.g. height) of the leaf openings 211 in the top-bottom direction is larger than the dimension (e.g. height) of the plate recesses 231.

[0110] Due to the configuration described above, it is easy to fit the projections 26 into the leaf openings 211.

[0111] In the present embodiment, the projections 26 protrude from each of the front surface and the rear surface of the body 22.

[0112] Due to the configuration described above, two sheets 21 can each be stored on the front surface and the rear surface of the body 22.

[0113] In the present embodiment, the sheet 21 is made of an elastomeric material, such as rubber, and the plate 23 is made of a polymer (synthetic resin) or metal.

[0114] Due to the configuration described above, the collecting liquid on the surface to be cleaned can be effectively pushed, wiped or scraped (collected) by the leaves 21 during a cleaning process, and sufficient strength of the scraper device 11 can be ensured.

[0115] In the present embodiment, the body 22 has a suction opening 24.

[0116] Due to the configuration described above, the collecting fluid on the surface to be cleaned is drawn off from (via) the suction opening 24.

[0117] In the present embodiment, the holder 13 has the holder recesses 19 into which the wiper 12 is inserted from below.

[0118] Due to the configuration described above, the holder 13 can hold the wiper 12 stably (securely).

[0119] In the present embodiment, the holder recesses 19 are arranged at both ends of the holder 13 in the left-right direction.

[0120] Due to the configuration described above, the holder 13 can hold the wiper 12 more stably (securely).

[0121] In the present embodiment, the body 22 has projections 26 which extend from opposite surfaces, each facing the respective leaves 21. The leaves 21 each have leaf openings 211 in which at least portions of the projections 26 are arranged. The plates 23 each have plate recesses 231 in which at least portions of the projections 26 are arranged. The projections 26 each have a projection recess 26A, which extends downwards from the lower surface of the projection 26, and a large-diameter section 26B, which is arranged between the opposite (facing) surface and the projection recess 26A.In a state in which the large diameter parts 26B are each arranged (inserted) into the leaf openings 211, the plate recesses 231 are then fitted onto the projection recesses 26A from above the projections 26, whereby the leaves 21 are caught (fixed, secured, clamped, held) between the body 22 and the plates 23.

[0122] Based on the configuration described above, after mounting the leaves 21 on the body 22, the leaves 21 can be attached using the plates 23.

[0123] In the present embodiment, the wiper device 11 comprises the movable component 30, which is movably mounted on the holder 13 and has the engagement parts 34, each of which engages with the engaged parts 29 provided on the body 22; the first preloading component 40, which preloads the movable component 30 such that the engagement parts 34 and the engaged parts 29 are engaged; and the second preloading components 50, which preload the wiper 12 such that the wiper 12 and the holder 13 separate. By bringing (moving) the wiper 12 towards the holder 13 against the preload force of the second preloading components 50, the engagement parts 34 and the engaged parts 29 engage and remain engaged, so that the wiper 12 is attached to the holder 13.

[0124] Due to the configuration described above, by lifting the wiper 12 against the preload force of the second preloading component 50, so that it is brought in the direction of the holder 13, the engagement parts 34 and the engaged parts 29 come into engagement and then remain in engagement due to the preload force of the first preloading component 40, so that the wiper 12 is mounted on the holder 13.

[0125] In the present embodiment, the stripping device 11 comprises the stripper 12, which includes the leaves 21 and the body 22 on which the leaves 21 are mounted, the holder 13, which extends in the left-right direction and holds the stripper 12, and the movable component 30, which is movably mounted on the holder 13. The movable component 30 comprises the actuating part 32 and the engagement parts 34, each of which engages with the engaged parts 29 provided on the body 22. An actuating part 32 is arranged on (in) the central part of the holder 13 in the left-right direction.

[0126] Due to the configuration described above, the engagement parts 34 of the movable component 30 and the engaged parts 29 of the body 22 engage, or their engagement is released, by actuating (manually moving) the actuating part 32 of the movable component 30, which is supported by the holder 13. Thus, the user of the wiper device 11 can easily attach the wiper 12 to the holder 13 and remove the wiper 12 from the holder 13 simply by actuating the actuating part 32. The user can easily remove the wiper 12 from the holder 13, making maintenance easier and more convenient. For example, the user can replace the blades 21 and clean the wiper 12.The user can easily mount the wiper 12 onto the holder 13, so that the wiper 12 can be attached and removed in a user-friendly manner.

[0127] In the present embodiment, the stripping device 11 has the first preloading component 40, which preloads the movable component 30, so that the engagement parts 34 and the engaged parts 29 are engaged.

[0128] Due to the configuration described above, the engagement parts 34 and the engaged parts 29 come into engagement and are held in the engaged state by the preload force of the first preloading component 40, so that the wiper 12 is securely mounted on the holder 13. The user only needs to actuate the actuating part 32 to remove the wiper 12 from the holder 13.

[0129] In the present embodiment, the actuating part 32 is arranged behind the engaged parts 29. The first preloading component 40 preloads the movable component 30 forward. By actuating (moving) the actuating part 32 backward, the engagement of the engaged parts 29 and the engagement parts 34 is released.

[0130] Due to the configuration described above, the user can easily actuate the engagement of the engaged parts 29 and the engagement parts 34 by actuating the actuable part 32 backwards from the rear of the wiper device 11.

[0131] In the present embodiment, the first preload component 40 has a coil spring. The movable component 30 has the receiving recess 35, which is concave upwards from the lower surface of the movable component 30. The holder 13 has the rib 17C, which is arranged inside the receiving recess 35. The rear end of the first preload component 40 contacts the rib 17C. The front end of the first preload component 40 contacts the inner surface 36 of the receiving recess 35.

[0132] Due to the configuration described above, the first preloading component 40, which is a coil spring, can effectively preload the movable component 30 forwards.

[0133] In the present embodiment, the scraper device 11 has the second preloading components 50, which preload the scraper 12 in a direction that causes the scraper 12 and the holder 13 to separate.

[0134] Due to the configuration described above, after the engagement of the engagement parts 34 and the engaged parts 29 is released, the wiper 12 is easily (and automatically) separated from the holder 13 due to the preload force of the second preload components 50.

[0135] In the present embodiment, at least one area of ​​the wiper 12 is positioned lower than the holder 13 (extends further downwards than the holder 13). The second preloading component 50 preloads the wiper 12 downwards.

[0136] Due to the configuration described above, after releasing the engagement of the engagement parts 34 and the engaged parts 29, the wiper 12 can be easily separated downwards from the holder 13 due to the preload force of the second preload components 50.

[0137] In the present embodiment, a plurality of second prestressing components 50 are arranged in the left-right direction.

[0138] Due to the configuration described above, after releasing the engagement of the engagement parts 34 and the engaged parts 29, the wiper 12 can be easily separated from the holder 13 due to the preload force of the majority of second preload components 50.

[0139] In the present embodiment, the second preload components 50 have coil springs. The wiper 12 has the rods 28, each of which has the small-diameter part 28A, onto which the second preload components 50 are fitted, and the large-diameter part 28B, which is arranged lower than the small-diameter part 28A. The lower end of the second preload component 50 contacts the bearing surface 28C at the boundary between the lower end of the small-diameter part 28A and the upper end of the large-diameter part 28B. The upper ends of the second preload components 50 contact the holder 13.

[0140] Due to the configuration described above, the second preload components 50, which are coil springs, can effectively preload the wiper 12 downwards.

[0141] In the present embodiment, each of the engagement parts 34 and the engaged parts 29 have a hook shape that hooks together.

[0142] Due to the configuration described above, since the engagement parts 34 each have a hook shape and the engaged parts 29 also have a hook shape, the wiper 12 is securely mounted on the holder 13 by hooking the engagement parts 34 onto (in) the engaged parts 29.

[0143] In the present embodiment, a plurality of each of the engagement parts 34 and the engaged parts 29 are provided in the left-right direction.

[0144] Due to the configuration described above, the wiper 12 is stably (securely) mounted on the holder 13 by the majority of engagement parts 34 and the majority of engaged parts 29.

[0145] In the present embodiment, the scraper 12 has the tube 25, which defines a suction flow path. The engagement parts 34 and the engaged parts 29 are arranged on opposite sides in the left-right direction of the suction flow path.

[0146] Due to the configuration described above, the wiper 12 is stably (securely) mounted on the holder 13 by the engagement parts 34 and the engaged parts 29, which are arranged on both sides of the suction flow path.

[0147] In the present embodiment, the actuable part 32 projects upwards from the upper surface of the holder 13.

[0148] Due to the configuration described above, the user can easily operate the actuable part 32.

[0149] In the present embodiment, the holder 13 has a guide opening 15C which guides the actuable part 32 in the front-back direction.

[0150] Due to the configuration described above, the actuable part 32 can move stably in the front-back direction while being guided through the guide opening.

[0151] In the present embodiment, two engagement parts 34 are arranged in the left-right direction. The actuated part 32 is arranged between the two engagement parts 34 in the left-right direction.

[0152] Due to the configuration described above, the user can easily move the two engagement parts 34 simultaneously by simply actuating the one operable part 32.

[0153] In the present embodiment, the wiper device 11 comprises the first preloading element 40, which preloads the movable component 30 such that the engagement parts 34 and the engaged parts 29 come into engagement, and the second preloading elements 50, which preload the wiper 12 such that the wiper 12 and the holder 13 separate. By moving the wiper 12 towards the holder 13 against the preload force of the second preloading elements 50, the engagement parts 34 and the engaged parts 29 come into engagement, so that the wiper 12 is attached to the holder 13.

[0154] Due to the configuration described above, by lifting the wiper 12 against the preload force of the second preloading component 50, so that it is brought in the direction of the holder 13, the engagement parts 34 and the engaged parts 29 can engage due to the preload force of the first preloading component 40, so that the wiper 12 is mounted on the holder 13.

[0155] In the present embodiment, the wiper device 11 comprises the first preloading element 40, which preloads the movable element 30 such that the engagement parts 34 and the engaged part 29 come into engagement, and the second preloading elements 50, which preload the wiper 12 such that the wiper 12 and the holder 13 separate. By actuating the actuating part 32 against the preload force of the first preloading element 40, the engagement between the engagement parts 34 and the engaged parts 29 is released, so that the wiper 12 separates from the holder 13.

[0156] Due to the configuration described above, after the engagement of the engagement parts 34 and the engaged parts 29 is released by actuating the actuable part 32 against the preload force of the first preload component 40, the wiper 12 is separated from the holder 13 due to the preload force of the second preload components 50. Second embodiment

[0157] A second embodiment of the present teachings is now described. In this description, components that are the same or equivalent to those of the embodiments described above are given the same reference numerals, and the descriptions of these components are simplified or omitted.

[0158] Fig. Figure 32 is a perspective view from the top left front and shows a scraper device 2011 according to the second embodiment. Fig. Figure 33 is a top view showing the scraper device 2011 according to the second embodiment. Fig. Figure 34 is a perspective exploded view from the top left front, showing a holder 2013 according to the second embodiment. Fig. Figure 35 is a perspective exploded view from the top left front and shows an area of ​​the holder 2013 according to the second embodiment and corresponds to an enlarged view of an area of Fig. 34. Fig. Figure 36 is a cross-sectional view showing the stripping device 2011 according to the second embodiment and corresponds to a cross-sectional view in the direction of the arrows at line EE in Fig. 32. Fig. Figure 37 is a cross-sectional view showing an area of ​​the stripping device 211 according to the second embodiment, and shows the state in which the engagement parts 34 and the engaged parts 29 are engaged. Fig. Figure 38 is a cross-sectional view showing an area of ​​the stripping device 211 according to the second embodiment, and shows a state in which the engagement of the engagement parts 34 and the engaged parts 29 is released.

[0159] A bearing element 2017 movably supports a movable component 2030. The movable component 2030 is movable in the front-back direction. The first preloading component 40 preloads the movable component 2030 forwards.

[0160] In the present embodiment, the movable component 2030 moves in the forward-backward direction by rotating a lever part 2032, which is another embodiment of an actuating part according to the present teachings. The lever part 2032 is rotatably mounted in a guide opening 2015C, which is provided in a cover 2015. A cam 37 is attached to the lower end of the lever part 2032. The cam 37 is received in a cam receiving part 2030A of the movable component 2030. The cam 37 can contact a stop part 17G of the bearing part 2017, which is arranged on the front of the cam receiving part 2030A.

[0161] As in Fig. Figure 37 shows that when the movable component 2030 moves forward due to the preload force of the first preload component 40, the engagement parts 34 and the engaged parts 29 come into engagement. As shown in Fig. As shown in Figure 38, when the lever part 2032 is rotated, the cam 37 rotates while contacting the stop part 17G and the inner surface of the cam receiving part 2030A, causing the movable component 2030 to move backward. The engagement of the engagement parts 34 and the engaged parts 29 is disengaged when the movable component 2030 moves backward. Third embodiment

[0162] A third embodiment of the present teachings is now described. In this description, components that are the same or equivalent to those of the embodiments described above are given the same reference numerals, and the descriptions of these components are simplified or omitted.

[0163] Fig. Figure 39 is a perspective view from the top left front and shows a scraper device 3011 according to the third embodiment. Fig. Figure 40 is a top view showing the scraper device 3011 according to the third embodiment. Fig. Figure 41 is a perspective exploded view from the top left front and shows a holder 3013 according to the third embodiment. Fig. Figure 42 is a perspective exploded view from the top left front and shows an area of ​​the holder 3013 according to the third embodiment and corresponds to an enlarged view of an area of Fig. 41. Fig. Figure 43 is a cross-sectional view showing the stripping device 3011 according to the third embodiment and corresponds to a cross-sectional view in the direction of the arrows at line FF in Fig. 39. Fig. Figure 44 is a cross-sectional view showing an area of ​​the stripping device 3011 according to the third embodiment and showing the state in which the engagement parts 34 and the engaged parts 29 are engaged. Fig. Figure 45 is a cross-sectional view showing an area of ​​the stripping device 3011 according to the third embodiment, and shows the state in which the engagement of the engagement parts 34 and the engaged parts 29 is released.

[0164] A bearing element 3017 movably supports a movable component 3030. The movable component 3030 is movable in the front-back direction. The first preloading element 40 preloads the movable component 3030 forwards.

[0165] In the present embodiment, pressing an actuating element 3032 downwards, which is another embodiment of an actuating element according to the present teachings, causes the movable component 3030 to move in the front-back direction. The button part 3032 is movably mounted in the up-down direction in a guide opening 3015C, which is provided in a cover 3015. An inclined surface 3032A is provided at the lower end of the button part 3032. An inclined surface 3030A is provided on a region of the movable component 3030 that is opposite the inclined surface 3032A. The inclined surface 3032A contacts the inclined surface 3030A. The inclined surface 3032A faces downwards and is inclined upwards towards the rear. The inclined surface 3030A faces upwards and is inclined downwards towards the front.

[0166] As in Fig. Figure 44 shows that when the movable component 3030 moves forward due to the preload force of the first preload component 40, the engagement parts 34 and the engaged parts 29 come into engagement. As shown in Fig. Figure 45 shows that when the button part 3032 is pressed downwards, the inclined surface 3032A pushes the inclined surface 3030A downwards and backwards. When the inclined surface 3030A is pressed by the button part 3032, the movable component 3030 moves backwards. The engagement of the engagement parts 34 and the engaged parts 29 is released when the movable component 3030 moves backwards. Other embodiments

[0167] Fig. Figure 46 is a perspective exploded view from the top left front and shows the scraper device 4011 according to a further embodiment. In the embodiments described above, the tube 25 was provided with the scraper 12. As in Fig.As shown in Figure 46, the pipe 25 can be provided with a holder 4013. The suction flow path of the pipe 25, which is provided with the holder 4013, is fluidically connected to the suction opening 24 via a suction flow path 24R, which is provided with the wiper 12.

[0168] In the embodiments described above, the blades 21 are entirely made of an elastomeric material, such as rubber. Alternatively, the blades can have a core or area made of metal (e.g., aluminum or an aluminum alloy) which, for example, has an elastomeric lip that is removably attached to the metal core or area. The elastomeric lip is configured to contact the surface to be cleaned. In such an embodiment, replacement costs can be reduced because a smaller portion of elastic material (elastomeric material) is replaced, while the metal core or area is reusable. Furthermore, the main area (i.e.,the core or area made of metal) of the sheet 21 is made stiffer than an elastomer material, while the lip that touches the surface to be cleaned is flexible enough to continuously touch the surface to be cleaned during a cleaning process.

[0169] It is explicitly emphasized that all features disclosed in the description and / or the claims are to be considered separate and independent of one another for the purpose of the original disclosure as well as for the purpose of limiting the claimed invention, irrespective of the combinations of features in the embodiments and / or the claims. It is explicitly stated that all range specifications or specifications of groups of units disclose every possible intermediate value or subgroup of units for the purpose of the original disclosure as well as for the purpose of limiting the claimed invention, in particular also as a boundary of a range specification. REFERENCE MARK LIST 1 scrubber-dryer 2 Basic component 3 brushes 4-brush motor 5 Guide component 6 handle 7 Feed tank 8 Collection tank 9 Power source 10 Suction engine 11. Scraper device 12 wipers 13 holders 14 holder bodies 15 Cover 15A first cover part 15B second cover part 15C Guide opening 15D opening 15F screw attachment 16 screws 17 bearing part 17A first recording section 17B second recording part 17C rib 17D opening 17E Excerpt 17F screw opening 17G bumper part 18 Arm 18A Opening 19 Holder recess 20 roller 21 sheets 21A first sheet 21B second sheet 22 bodies 23 plate 23A first plate 23B second disk 24 Suction opening 24R Suction Flow Path 25 pipe 26 lead 26A Projection recess 26B Large diameter part 27 medium lead 27A Recess 28 staff 28A Small diameter part 28B Large diameter part 28°C storage surface 29 intervened part 30 movable components 31 Base part 32 actuated part 33 Arm 34 Intervention part 35. Admission exemption 36 inner surface 37 Cam 40 first prestressing component 50 second prestressing component 211 Leaf opening 212 medium leaf opening 231 Plate recess 232 middle plate recess 2011 scraper device 2013 Holder 2015 Coverage 2015C Guide Opening 2017 storage part 2030 movable component 2030A Cam Mounting Part 2032 Lever part 3011 Scraper device 3013 Holders 3015 Cover 3015C Guide opening 3017 Bearing part 3030 movable component 3030A inclined surface 3032 Button part 3032A inclined surface 4011 Scraper device 4013 Holder QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 2022 / 0 211 239 A1

[0002]

Claims

[1] Scraper device (11), with a scraper (12), and a holder (13) which extends in a left-right direction and holds the wiper, in which the scraper a first sheet (21, 21A), a body (22) to which the first sheet is mounted, and has a first plate (23, 23A) which holds the first sheet against the body. [2] Scraper device according to claim 1, wherein the first plate (23A) holds the first sheet (21A) against a front surface of the body (22), and a second plate (23B) holds a second sheet (21B) against a rear surface of the body. [3] Scraper device according to claim 1 or 2, wherein the body (22) has a projection (26) which protrudes from a first surface facing the first sheet (21, 21A), the first leaf has a leaf opening (211) in which at least a portion of the projection is arranged, and the first plate (23, 23A) has a plate recess (231) in which at least one area of ​​the projection is arranged. [4] Scraper device according to claim 3, wherein the projection (26) has a projection recess (26A) which is recessed downwards from a lower surface of the projection, and a large diameter part (26B) which is arranged between the first surface and the projection recess, the large diameter part is arranged in the blade opening (211), and the plate recess (231) is fitted onto the projection recess from above the projection. [5] Scraper device according to claim 1 or 2, wherein the body (22) has a plurality of first projections (26) spaced apart in the left-right direction, the first projections projecting from a first surface of the body facing the first sheet (21, 21A), and the first sheet has a plurality of first sheet openings (211) and the first plate has a plurality of first plate recesses (231) which are spaced apart in the left-right direction, so that the first projections are arranged in the first sheet openings and the first plate recesses. [6] Stripping device according to one of claims 3 to 5, wherein in a state in which the projection (the projections) (26) was (was) arranged in the leaf opening (the leaf openings) (211) and in the plate recess (the plate recesses) (231), an upper end surface of the body (22) and an upper end surface of the first plate (23, 23A) are arranged in the same plane. [7] Stripping device according to one of claims 3 to 6, in which, in a state in which the projection (the projections) (26) was (was) arranged in the sheet opening (the sheet openings) (211) and in the plate recess (the plate recesses) (231), a lower end of the first sheet (21, 21A) is arranged lower than a lower end of the body (22) and a lower end of the first plate (23, 23A). [8] Stripping device according to one of claims 3 to 7, wherein in the left-right direction a dimension of the sheet opening(s) (211) is smaller than a dimension of the plate recess(s) (231). [9] Stripping device according to one of claims 3 to 8, wherein in an up-down direction a dimension of the sheet opening(s) (211) is larger than a dimension of the plate recess(s) (231). [10] Scraper device according to any one of claims 3 to 9, wherein the first surface is a (the) front surface of the body (22), and the body has a plurality of second projections (26) extending from a (the) posterior surface of the body. [11] Scraper device according to one of the preceding claims, wherein the first sheet (21, 21A) is made of an elastomeric material, and the first plate (23, 23A) is made of a polymer or metal. [12] Scraper device according to one of the preceding claims, wherein the body (22) has a suction opening (24). [13] Scraper device according to one of the preceding claims, wherein the holder (13) has a holder recess (19) into which the scraper (12) can be inserted from below. [14] Scraper device according to one of claims 1 to 12, wherein the holder (13) has a first and a second holder recess (19) which are each arranged at a first and a second end of the holder in the left-right direction, wherein the scraper (12) can be inserted from below into the first and the second holder recess. [15] Scraper device according to claim 1, wherein the body (22) has a projection (26) which protrudes from a first surface facing the first sheet (21, 21A), the first leaf has a leaf opening (211) in which at least one area of ​​the projection is arranged, the first plate (23, 23A) has a plate recess (231) in which at least one area of ​​the projection is arranged, the projection has a projection recess (26A) which is recessed downwards from an upper surface of the projection, and a large diameter part (26B) which is arranged between the first surface and the projection recess, and in a state in which the large diameter part of the projection is arranged in the blade opening and the plate recess is fitted onto the projection recess from above the projection, the first blade is held between the first plate and the body. [16] Scraper device according to one of the preceding claims, further comprising a movable component (30) which is movably mounted on the holder (13) and has an engagement part (34) which is configured to engage with an engaged part (29) which is provided on the body (22), a first prestressing component (40) which prestresses the movable component in a direction that causes the engagement part to engage with the engaged part, and a second prestressing component (50) which prestresses the wiper in a direction that causes the wiper (12) to separate from the holder, in which the engagement part is configured to engage with the engaged part by moving the wiper towards the holder against the preload force of the second preloading component, so that the wiper is attached to the holder. [17] Floor cleaning machine (1), with a brush (3) which is supported by a base component (2) and is configured to be rotatably driven by an electric motor (4), a liquid supply tank (7) configured to supply a liquid under the base component, and the wiping device (11) according to one of the preceding claims, which is mounted on the base component in such a way that the first sheet (21, 21A) can touch a surface to be cleaned. [18] Floor cleaning machine according to claim 17, further comprising a (the) suction opening (24) defined in the body (22), a suction motor (10) in fluid connection with the suction opening, and a collection tank (8) configured to collect the liquid that is suctioned from the surface.

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