Cleaning tool and cleaning sheet

Abstract

To provide a cleaning tool for enabling a cleaning sheet to be easily attached / detached to / from a cleaning tool body and also for restricting the mounted cleaning sheet from being unintendedly removed from the cleaning tool body.SOLUTION: A cleaning tool 1 includes a cleaning tool body 11 having a cleaning surface 11a to face a cleaned object. A cleaning sheet 13 is mounted in a state to cover the cleaning surface 11a so as to be used to clean the cleaned object. Bristles 10 are planted in the cleaning tool body 11. The bristles 10 include tapered bristles 14 having a tapered part 16 whose cross sectional area is reduced toward a distal end. The cleaning sheet 13 is overlapped with an area with the bristles 10 planted therein, and the tapered bristles 14 are pieced into the cleaning sheet 13, so that the cleaning sheet 13 can be fixed to the cleaning tool body 11.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a cleaning tool and a cleaning sheet. [Background technology]

[0002] There is known a type of cleaning tool that has a cleaning tool body and a handle, and that removes dust, dirt, etc. from an object to be cleaned such as a floor surface with a cleaning sheet attached to the cleaning tool body. For example, the cleaning tools described in the cited documents 1 and 2 have been proposed as such cleaning tools.

[0003] The cleaning tool described in Patent Document 1 has a press base made of a plate-shaped base, claws formed on the periphery of the base, and a horizontally long, flat cleaning plate covered with a soft material or a raised cloth or the like that is extended on the bottom side of the base, and a pedestal having a fitting hole formed in the center and claws formed on the periphery. This cleaning tool can hold a nonwoven fabric sheet between the cleaning plate and the fitting hole.

[0004] The cleaning tool described in Patent Document 2 is composed of a brush body, a locking groove provided in the brush body, and a cleaning cloth, the brush body has many brush bristles extending downward, and a grip rod for controlling the movement of the brush body is provided on the upper surface of the brush body. A number of locking grooves are provided on both sides of the upper surface of the brush body, and the cleaning cloth can be locked by pushing it into the locking grooves.

[0005] Furthermore, although Patent Document 3 does not disclose a technique for attaching a cleaning sheet to the cleaning tool body, the document does disclose a multi-layered cleaning sheet in which a bulky nonwoven fabric is filled into a piled layer of a piled fabric consisting of a base fabric and monofilament pile, and the monofilament pile penetrates through the bulky nonwoven fabric. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2001-212056 A [Patent Document 2] Utility Model Registration Gazette No. 3196711 [Patent Document 3] Japanese Patent Application Laid-Open No. 2018-171191 [Summary of the Invention] [Problems to be Solved by the Invention]

[0007] For cleaning tools that are used by attaching a cleaning sheet to a cleaning tool body, it is desirable that the cleaning sheet can be easily attached to and detached from the cleaning tool body, and that the attached cleaning sheet is prevented from accidentally coming off. However, in conventional cleaning tools, due to the shape, structure, etc. of the part where the cleaning sheet is attached, there are cases where it is difficult to attach the cleaning sheet, or where the cleaning sheet accidentally comes off the cleaning tool body during the cleaning operation after attachment. Regarding the cleaning tools described in Patent Documents 1 and 2 as well, there was room for improvement in making the cleaning sheet easily attachable to and detachable from the cleaning tool body, and in preventing the cleaning sheet from accidentally coming off the cleaning tool body.

[0008] An object of the present invention relates to providing a cleaning tool that can easily attach and detach a cleaning sheet to and from a cleaning tool body, and that can prevent the attached cleaning sheet from accidentally coming off the cleaning tool body. [Means for Solving the Problems]

[0009] The present invention relates to a cleaning tool comprising a cleaning tool body having a cleaning surface facing the object to be cleaned, with a cleaning sheet attached in a state covering the cleaning surface, and being used for cleaning the object to be cleaned. As one embodiment, it is preferable that bristles are implanted in the cleaning tool body. As one embodiment, it is preferable that the bristles include tapered bristles having a tapered shape portion whose cross-sectional area decreases toward the tip. As one embodiment, it is preferable that the cleaning tool is configured to maintain the state in which the cleaning sheet is attached to the cleaning tool body by overlapping the cleaning sheet on the region where the bristles are implanted and piercing the tapered bristles into the cleaning sheet.

[0010] The present invention also relates to a wet cleaning sheet that is attached to and used with a cleaning tool. As one embodiment, it is preferable that the cleaning sheet has a fiber density of less than 130 kg / mm 3 and an impregnation rate of the cleaning liquid of 10% or more and 400% or less.

Advantages of the Invention

[0011] According to the present invention, it is possible to provide a cleaning tool that can easily attach and detach the cleaning sheet to and from the cleaning tool body and suppress the unintentional detachment of the attached cleaning sheet from the cleaning tool body.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0013] The cleaning tool 1 according to a preferred embodiment of the present invention shown in FIG. 1 includes a cleaning tool body 11 having a cleaning surface 11a directed toward the object to be cleaned, and a cleaning sheet 13 is attached in a state covering the cleaning surface 11a and is used for cleaning the object to be cleaned. Examples of the object to be cleaned include a floor surface, a window, a ceiling, furniture, an exterior or interior of an automobile, a work of art, and the like. The floor surface is generally flat and may be a flooring or a floor surface with a carpet laid thereon. Also, the object to be cleaned is not limited to planar ones.

[0014] The cleaning tool 1 of this embodiment includes a cleaning tool main body 11 having a cleaning surface 11a facing the object to be cleaned during cleaning, and a rod-shaped handle portion 19. The handle portion 19 has, for example, a rod-shaped portion that can be stretched or extended by assembly, or a rod-shaped portion and a gripping portion that can be held by hand, and is connected to the cleaning tool main body 11 via a connecting portion 17 with a variable angle with respect to the cleaning tool main body 11, such as a universal joint. It is preferable that the handle portion 19 is connected to the cleaning tool main body 11 or can be connected to the cleaning tool main body 11. To enable the connection of the handle portion 19, it is preferable to provide the cleaning tool main body 11 with a connecting portion to which the handle portion 19 can be connected by any method such as fitting, screwing, engaging, or a combination thereof. By providing the handle portion 19, the cleaning operation by the cleaning tool 1 can be performed more efficiently. In addition, in the cleaning tool 1 of this embodiment, the operation of attaching the cleaning sheet 13 to the cleaning tool main body 11 is simple. For example, as shown in FIGS. 8(a) and 8(b), the cleaning tool main body 11 is placed on the cleaning sheet 13 having the same shape as the cleaning surface 11a and gently moved or gently pressed, and the cleaning sheet 13 can be attached to the cleaning tool main body 11. However, by providing the handle portion 19 having a rod-shaped portion, such an attachment operation can be performed more simply without taking an awkward posture. The cleaning tool according to the present invention may not have the handle portion 19, and may be, for example, one that directly grips the cleaning tool main body 11 with the cleaning sheet 13 attached thereto by hand and uses it for cleaning. Further, the cleaning tool main body 11 and the handle portion 19 may be connected in a state where the angle is unchanged by integral molding or the like.

[0015] In this embodiment, the cleaning tool main body 11 has a plate shape, and one side thereof serves as a cleaning surface 11a facing the object to be cleaned. The handle portion 19 is connected to the central portion of the upper surface 11b, which is the surface opposite to the cleaning surface 11a, of the cleaning tool main body 11.

[0016] The cleaning surface 11a of the cleaning tool body 11 is implanted with bristles 10. In the present embodiment, the bristles 10 include tapered bristles 14 having a tapered shape portion 16 with a decreasing cross-sectional area toward the tip. In this specification, as shown in FIG. 5(a), the entire area from the base end to the tip of the tapered bristle 14 may be the tapered shape portion 16, or as shown in FIG. 5(b), it may have a non-tapered portion with a constant cross-sectional area on the base end side and a tapered shape portion 16 on the tip side, or as shown in FIG. 5(c), it may have a tapered shape portion 16 with a rounded tip, or as shown in FIG. 5(d), it may have a portion bent in a direction intersecting the axial direction of the tapered bristle 14 at the tip. However, a bristle having a hook-shaped portion folded back toward the base end side at the tip, such as the hook material of a mechanical surface fastener, does not correspond to a tapered bristle. When removing the cleaning sheet 13 from the cleaning tool body 11, from the viewpoint of suppressing damage to the cleaning sheet 13, it is preferable that the cleaning tool body 11 includes tapered bristles and does not include bristles having the above-mentioned hook-shaped portion. The tapered shape portion 16 of the tapered bristle 14 can be easily provided by taper-resharpening the tip portion of the bristle using a known polishing device or by immersing the tip portion of the bristle in a known dissolving solvent to a predetermined depth for taper-resharpening. The tapered bristle 14 can preferably be provided by immersing the tip portion of the bristle in a dissolving solvent for processing.

[0017] The length L2 of the tapered portion 16 is preferably 0.4 mm or more, more preferably 1 mm or more, still more preferably 5 mm or more, and preferably 30 mm or less, more preferably 20 mm or less, still more preferably 10 mm or less, and preferably 0.4 mm or more and 30 mm or less, more preferably 1 mm or more and 20 mm or less, still more preferably 5 mm or more and 10 mm or less, from the viewpoints of ease of attachment and retention of the cleaning sheet, etc. The ease of attachment of the cleaning sheet means that, for example, the detaching and attaching of the cleaning sheet 13 to the cleaning tool body 11 becomes easy by making it easy for the tapered bristles 14 to pierce into the cleaning sheet 13 and / or giving appropriate flexibility to the tapered bristles 14. The retention of the cleaning sheet means that, by giving appropriate flexibility to the tapered bristles 14, etc., the attached cleaning sheet 13 is prevented from unintentionally detaching from the cleaning tool body 11. The length L2 of the tapered portion 16 is the length from the taper start portion 16a, which is the position where the diameter of the tapered portion 16 begins to decrease in cross-sectional area toward the tip, to the tip, and is the length measured along the central axis of the bristles 10.

[0018] The length and the implanted hair height L3 of the tapered bristles 14 are preferably 1 mm or more, more preferably 2 mm or more, still more preferably 5 mm or more, and preferably 30 mm or less, more preferably 20 mm or less, still more preferably 15 mm or less, and preferably 1 mm or more and 30 mm or less, more preferably 2 mm or more and 20 mm or less, still more preferably 5 mm and 15 mm or less, from the viewpoints of ease of attachment and retention of the cleaning sheet, etc. For the non-tapered bristles that may be implanted together with the tapered bristles 14, it is preferable that the length, the implanted hair height L3, the diameter of the base end, etc. are the same as those of the tapered bristles 14. The implanting height L3 of the bristles 10 is the value measured along the normal line of the cleaning surface 11a from the surface of the cleaning surface 11a where the bristles 10 protrude, in this embodiment, from the surface of the implanting base 9 where the base ends of the bristles 10 are located to the tip 18 of the bristles 10. The length of the bristles 10 is the length from the base end to the tip 18 of the bristles 10, and is the length measured along the central axis of the bristles 10.

[0019] From the viewpoints such as the ease of attachment and the holding property of the cleaning sheet, etc., the length L2 of the tapered shape portion 16 is preferably 25% or more and 100% or less, more preferably 50% or more and 100% or less with respect to the implanting height L3 of the tapered bristles 14.

[0020] From the viewpoints such as the ease of attachment and the holding property of the cleaning sheet, etc., the diameter at the base end of the tapered bristles 14 or the diameter L1 of the base end side end portion of the tapered shape portion 16 of the tapered bristles 14 is preferably 50 μm or more, more preferably 100 μm or more, and is preferably 500 μm or less, more preferably 250 μm or less, and is preferably 50 μm or more and 500 μm or less, more preferably 100 μm or more and 250 μm or less. From the viewpoints such as the attachment and holding property and / or the ease of removal, etc., the length L2 of the tapered shape portion 16 of the tapered bristles 14 is preferably 3.8 times or more, more preferably 5.7 times or more with respect to the diameter at the base end of the tapered bristles 14 or the diameter L1 of the base end side end portion of the tapered shape portion 16, and is preferably 114.6 times or less, more preferably 57.3 times or less, and is preferably 3.8 times or more and 114.6 times or less, more preferably 5.7 times or more and 57.3 times or less.

[0021] In this embodiment, a plurality of bristles 10, all or part of which are the tapered bristles 14, are implanted on the cleaning surface 11a side of the cleaning tool body 11. The method of implanting the bristles 10 into the cleaning tool body 11 is not limited as long as the bristles 10 can be provided in an upright state on the cleaning tool body 11, and any method can be adopted. In this embodiment, as shown in Fig. 4(a), a recess 8 for arranging the tufting base is formed on the cleaning surface 11a of the cleaning tool body 11, and a tufting base 9 in which tufts 15 of bristles 10 are implanted is fixed in the recess 8. The recess 8 for arranging the tufting base is a portion that is recessed in a concave shape from the cleaning surface 11a side to the upper surface 11b side of the cleaning tool body 11. As a method for implanting the tufts 15 in the tufting base 9, various known tufting methods can be adopted. For example, (1) a method of folding the tuft 15 in half with a flat wire and driving it into the tufting hole 25 provided in the tufting base 9, or (2) a method of heating one end of the tuft to form a molten mass, and then injecting a molten resin into a mold in which the molten mass is placed to injection-mold the tufting base 9, or (3) an inserting step of inserting the tuft into the tufting hole of the tufting base having the tufting hole (through hole), a heat treatment step of heating one end of the tuft protruding from the tufting hole to form a molten mass, and a coating step of coating the molten mass, and a method of obtaining a tufting base in a state where the tuft is implanted can be used.

[0022] In this embodiment, a plurality of bristles 10 are protrudingly provided by implanting a plurality of tufts 15 formed by bundling a plurality of bristles 10 into a plurality of tufting holes 25 provided in the tufting base 9. In this embodiment, a plurality of bristles 10 protrude from the tufting hole 25, but a single bristle 10 may protrude. The tufting hole 25 has, for example, a circular shape in plan view as shown in Fig. 3(a), and a diameter of 1 mm or more and 10 mm or less. The bristles 10 preferably include tapered bristles 14 and are made of synthetic resin. As the constituent resin of the bristles 10, for example, various known ones used for toothbrush bristles can be used without particular limitation. For example, polyamides such as nylon (registered trademark) and nylon 6, polyesters such as polybutylene terephthalate, and polyolefins such as polypropylene can be mentioned. From the viewpoints of ease of attachment and retention of the cleaning sheet, nylon is preferable.

[0023] In this embodiment, the portion of the cleaning surface 11a of the cleaning tool body 11 other than the concave portion 8 is not recessed in a concave shape but is flat. The flatness referred to here does not mean a perfect plane. For example, in order to improve the dirt scraping performance of the portion of the cleaning sheet 13 that covers the portion other than the concave portion 8, corrugated or striped ridges may be provided on the portion of the cleaning surface 11a other than the concave portion 8. Further, Fig. 4(a) shows an embodiment in which there is no step between the base surface from which the bristles 10 protrude, which is the surface of the hair planting base 9 fixed in the concave portion 8, and the portion of the cleaning surface 11a of the cleaning tool body 11 other than the concave portion 8, but there may be a step.

[0024] The cleaning tool body 11 of this embodiment has a lateral direction Y along the long side of the rectangular planar shape and a longitudinal direction X (see Fig. 3) perpendicular to the lateral direction Y. There is no particular limitation on the direction in which the cleaning tool body 11 is moved during cleaning, but in this embodiment, the longitudinal direction X is the main cleaning direction in which the cleaning tool body 11 is mainly moved during cleaning. Regarding the arrangement of the hair planting bases 9 on the cleaning surface 11a of the cleaning tool body 11 in this embodiment, reference will be made to Figs. 3(a) and (b) for description. As shown in Fig. 3(b), since the hair planting region 12 in which the bristles 10 are planted is formed in a shape substantially similar to the shape of the contour of the hair planting base 9 on each hair planting base 9, the description of the arrangement of the hair planting base 9 is also the description of the arrangement of the hair planting region 12. The hair planting base 9 in this embodiment has an elliptical shape in a plan view of the cleaning surface 11a, and its longitudinal direction coincides with the lateral direction Y. Further, a plurality of the hair planting bases 9 of this embodiment are arranged at intervals from each other on the cleaning tool body 11. More specifically, rows in which a plurality of the hair planting bases 9 or the hair planting regions 12 are arranged in series at intervals in the lateral direction Y are formed in a plurality of rows at intervals in the longitudinal direction X. When a plurality of hair implanting areas 12 are formed with spaces therebetween, there are advantages such as an improvement in the performance of scraping off dirt by the cleaning sheet 13 covering the cleaning surface 11a. Also, when a plurality of hair implanting areas 12 are arranged along each of two opposing edges of the cleaning surface 11a as shown in Fig. 3(a), the ease of attachment and the holding property of the cleaning sheet to the cleaning surface 11a are improved. The hair implanting areas 12 arranged with spaces therebetween are preferably separated from each other by a distance of 7 mm or more, and more preferably 10 mm or more.

[0025] The planar shape and arrangement of the hair implanting base 9 or the hair implanting area 12 can be changed. For example, the hair implanting base 9 and the hair implanting area 12 shown in Fig. 3 are elliptical in plan view, and their longitudinal direction coincides with the lateral direction Y. However, the planar shape of the hair implanting base 9 and the hair implanting area 12 can be any shape such as circular, rectangular, pentagonal, or a shape imitating the face of a rabbit. Fig. 7 shows an example in which a hair implanting base 9 having a star shape in plan view is arranged. A hair implanting area 12 having the same shape as the contour of the hair implanting base 9 is formed on the hair implanting base 9. The material of the cleaning tool body 11 is, for example, plastic including the hair implanting base 9. Examples of the plastic include polyolefins such as polyethylene and polypropylene. The portion of the cleaning surface 11a of the cleaning tool body 11 other than the recess 8 may be formed of a material different from the forming material of the portion on the upper surface 11b side of the cleaning tool body 11. It is also preferable that the portion of the cleaning surface 11a other than the recess 8 is formed of an elastically deformable synthetic resin material such as urethane or EVA (ethylene vinyl acetate copolymer) resin.

[0026] In addition to the above-described implanting method, the tapered bristles 14 may be implanted by a method of attaching cut fibers of a double raschel mesh. In this case, for example, by cutting a part of the double raschel mesh in a heated state, preferably in a heated and stretched state, bristles that are all or part tapered bristles can be formed.

[0027] In this embodiment, all of the bristles 10 that make up each tuft 15 are the tapered bristles 14 having the above-described configuration. However, at least a part of the bristles 10 in one planting area 12 may be the tapered bristles 14. Also, a planting area 12 in which all or a part of the bristles are the tapered bristles 14 and a planting area in which only the bristles 10 having no tapered shape portion are planted may be mixed. Preferably, at least a part of the bristles 10 that make up each tuft 15 is the tapered bristles 14. From the viewpoint of suppressing the tuft 15 from following the surface to be cleaned by a flexible deformation and the cleaning sheet 13 unintentionally coming off from the cleaning tool main body 11 during use, the proportion of the tapered bristles 14 to the total number of the bristles 10 included in each tuft 15 is preferably 10% or more and 100% or less, more preferably 30% or more and 100% or less, still more preferably 50% or more and 100% or less.

[0028] According to the cleaning tool 1 of this embodiment, the cleaning sheet 13 is overlaid on the area where the bristles 10 are planted, and the tapered bristles 14 are pierced into the cleaning sheet 13, so that the cleaning sheet 13 is held in each planting area 12, whereby the cleaning sheet 13 is maintained in a state of being attached to the cleaning tool main body 11. The cleaning sheet 13 is preferably rectangular in a plan view shape similar to that of the cleaning tool main body 11.

[0029] As a method of overlaying the cleaning sheet 13 on the planting area 12 where the bristles 10 are planted and piercing the tapered bristles 14 into the cleaning sheet 13, for example, the cleaning sheet 13 may be overlaid on the cleaning surface 11a of the cleaning tool main body 11 and gently pressed by hand, or the cleaning tool main body 11 may be overlaid on the cleaning sheet 13 placed on the floor surface and a load directed downward may be applied to the cleaning tool main body 11 so that the tapered bristles 14 are pierced into the cleaning sheet 13. As a method of applying a load directed downward to the cleaning tool main body 11, a load may be directly applied to the cleaning tool main body 11 by hand or indirectly via the handle portion 19, or the mass of the cleaning tool main body 11 may be set to a weight sufficient for the tapered bristles 14 to pierce into the cleaning sheet 13. According to the cleaning tool 1 of the present embodiment, for example, in this way, the cleaning sheet 13 can be easily fixed to the cleaning tool main body 11. Moreover, when the bristles 10 including the tapered bristles 14 pierce the cleaning sheet 13, as shown in FIG. 4(b), the bristles 10 are reinforced by the cleaning sheet 13, and even if a force is applied to the bristles 10 during cleaning, it is possible to suppress the bristles 10 from bending. Therefore, it is difficult to release the holding of the cleaning sheet 13 by the area where the bristles 10 are implanted, and it is also possible to suppress the cleaning sheet 13 from accidentally coming off from the cleaning tool main body 11.

[0030] From the viewpoint of making it easier for the tapered bristles 14 to pierce the cleaning sheet 13 and facilitating the attachment of the cleaning sheet 13, the tip angle θ of the tapered bristles 14 is preferably 0.5° or more, more preferably 1.0° or more, and still more preferably 1.5° or more. Also, from the viewpoint of sufficiently inserting the cleaning sheet 13 into the cleaning tool main body 11, the tip angle θ is preferably 15.0° or less, more preferably 10.0° or less, and still more preferably 7.5° or less. Considering the above, the tip angle θ is preferably 0.5° or more and 15.0° or less, more preferably 1.0° or more and 10.0° or less, and still more preferably 1.5° or more and 7.5° or less. The tip angle θ of the tapered bristles 14 is measured as follows.

[0031] <Measurement method of the tip angle θ> The tip portion of the tapered bristles 14 is observed in a state of being magnified at a predetermined magnification using an optical microscope. Next, a virtual straight line ILc is extended along the straight line portion on one side 16b of the two side edges 16b and 16c of the tapered bristles 14, and a virtual straight line ILd is extended along the straight line portion on the other side 16c. Then, the angle formed by the virtual straight line ILc and the virtual straight line ILd is measured using an optical microscope, and the measured angle is taken as the tip angle θ of the tapered bristles 14.

[0032] In the cleaning tool 1 of the present embodiment, it is preferable that the bristles 10, all or part of which are the tapered bristles 14, are implanted in part or all of the cleaning surface 11a, and it is more preferable that they are implanted in part of the cleaning surface 11a. In particular, when the bristles 10 are provided in part of the cleaning surface 11a, the contact pressure when inserting the bristles 10 into the cleaning sheet 13 is less likely to be dispersed, and the bristles 10 can be more easily inserted into the cleaning sheet 13 with a small force. In the present embodiment, as shown in FIGS. 2 and 3(a), the bristles 10 are implanted in part of the cleaning surface 11a. Specifically, on the cleaning surface 11a, there are a tufting area 12 where the bristles 10 including the tapered bristles 14 are implanted, and a non-tufting area where the bristles 10 including the tapered bristles 14 are not implanted. From the viewpoint of more surely achieving the above effects, the area ratio occupied by the tufting area 12 on the cleaning surface 11a is preferably 10% or more, more preferably 20% or more, and preferably 90% or less, more preferably 80% or less, still more preferably 60% or less, and preferably 10% or more and 90% or less, more preferably 10% or more and 80% or less, still more preferably 20% or more and 60% or less.

[0033] The area ratio occupied by the tufting area 12 on the cleaning surface 11a is a value obtained by expressing the ratio of the total area of the tufting area 12 to the area of the entire cleaning surface 11a as a percentage. As shown in FIG. 3(b), the area of the tufting area 12 is the area of the region surrounded by a virtual circular line S formed by connecting the outer edges of the tufting holes 25 arranged at the outermost peripheral part. When there are a plurality of tufting areas 12, the total area of them is taken as the total area of the tufting area 12.

[0034] When the bristles 10 are implanted on the cleaning surface 11a, the area of the cleaning sheet 13 can be reduced as compared with conventional cleaning tools. That is, in a conventional cleaning tool, after wrapping the cleaning sheet around the cleaning head so as to cover the lower surface of the cleaning head from below, the end of the cleaning sheet is fixed by being pushed into and engaged with the engaging slit of the sheet holding portion provided on the upper surface of the cleaning head. Therefore, the area of the cleaning sheet had to be larger than the area of the cleaning surface. On the other hand, according to the cleaning tool of the present invention, the area where the bristles 10 are implanted can be overlapped with the cleaning sheet 13 and fixed by piercing the tapered bristles 14 into the cleaning sheet 13. Thus, the area of the cleaning sheet 13 can be made substantially the same as the cleaning surface 11a. When the bristles 10 are implanted on the cleaning surface 11a, the area S2 of the cleaning sheet 13 is 20000 mm 2 or more and 50000 mm 2 or less, preferably 22500 mm 2 or more and 32500 mm 2 or less. Further, the ratio (S2 / S1) of the area S2 of the cleaning sheet 13 to the area S1 of the cleaning surface 11a is preferably 80% or more and 200% or less, and more preferably 90% or more and 130% or less.

[0035] As described above, the cleaning tool 1 of the present embodiment can use a cleaning sheet 13 that has an area capable of covering the cleaning surface 11a of the cleaning tool body 11 while not having a sufficient fixing portion for fixing to the upper surface of the cleaning tool body 11. Such a cleaning sheet 13 has, for example, a length in the longitudinal direction X of the cleaning tool body 11 that is 80% or more and 150% or less, preferably 90% or more and 120% or less, of the length of the cleaning tool body in the longitudinal direction X. Also, the cleaning sheet 13 has a length in the transverse direction Y of the cleaning tool body 11 that is 80% or more and 150% or less, preferably 90% or more and 120% or less, of the length of the cleaning tool body in the transverse direction Y.

[0036] In a state where the cleaning sheet 13 is attached to the cleaning tool main body 11, it is preferable that at least a part of the tapered bristles 14 penetrate the cleaning sheet 13. In the present embodiment, all of the bristles 10 are tapered bristles 14, and all of the bristles 10 penetrate the cleaning sheet 13. By having all or part, preferably all, of the bristles 10 penetrate the cleaning sheet 13, it is possible to further suppress the cleaning sheet 13 from unintentionally coming off the cleaning tool main body 11. Further, when the bristles 10 are implanted on the cleaning surface 11a, the bristles 10 penetrate the cleaning sheet 13 and the tips of the bristles 10 are exposed on the surface of the cleaning sheet 13. Therefore, when wiping a surface to be cleaned with such dirt attached with this cleaning tool, the dirt is scraped off by the tips of the bristles 10, and the scraped-off dirt adheres to the cleaning sheet 13, and the dirt can be removed. Further, since the tips of the bristles 10 exposed on the surface of the cleaning sheet 13 protrude slightly, the force for scraping off the dirt is dispersed on the cleaning sheet 13, so there is little risk of damaging the surface to be cleaned. In the state where the cleaning sheet 13 is attached to the cleaning tool main body 11, when the tapered bristles 14 penetrate the cleaning sheet 13, the length of the tip of the tapered bristles 14 exposed on the surface of the cleaning sheet 13 is preferably 0 mm or more and 5 mm or less, and more preferably 0.1 mm or more and 3 mm or less. Here, the fact that the length of the tip of the tapered bristles 14 exposed on the surface of the cleaning sheet 13 is 0 mm means that the tip of the tapered bristles 14 exists on the same plane as the surface of the cleaning sheet 13 on the side of the object to be cleaned.

[0037] The cleaning sheet 13 attached to the cleaning tool body 11 can use various known cleaning sheets made of fiber materials. The cleaning sheet made of fiber material can pierce the bristles 10 into the gaps between the fibers. Examples of the cleaning sheet made of fiber material include, for example, single-layer or multi-layer non-woven fabrics, or those combined with net-like fibers. Examples of the fiber material can include synthetic fibers, natural fibers such as cotton, regenerated fibers such as rayon, or combinations of two or more of these. The fiber material may be short fibers, long fibers, or a combination thereof.

[0038] From the viewpoint of making it easier for the bristles 10 to pierce into the cleaning sheet 13, in the tufting area 12 where the bristles are implanted, the compression load when the entire bristles 10 existing in the tufting area 12 are compressed by 0.2 mm from the tip side of the bristles is 0.15 N / 300 mm 2 or more, preferably 0.2 N / 300 mm 2 or more is more preferable. When the bristles 10 are implanted on the cleaning surface 11a and the bristles 10 penetrate the cleaning sheet 13, from the viewpoint of preventing the tip 18 of the bristles 10 exposed on the surface of the cleaning sheet 13 from scratching the surface to be cleaned, the compression load is 10 N / 300 mm 2 or less, preferably 5 N / 300 mm 2 or less is more preferable. Taking the above into consideration, the compression load is 0.15 N / 300 mm 2 or more and 10 N / 300 mm 2 or less, preferably 0.2 N / 300 mm 2 or more and 5 N / 300 mm 2 or less is more preferable. The compression load can be measured by the following method.

[0039] <Measurement method of compression load> 100 - 300 mm 2The tufting table 9 having the tufting area 12 was used as a measurement sample. When the cleaning tool body 11 has three or more tufting tables 9 on the cleaning surface side, three tufting tables 9 were randomly selected from them, taken out respectively, and used as measurement samples. For these measurement samples, measurements were carried out in the compression test mode of a tensilon universal testing machine. Specifically, for each measurement sample, a pressure head was arranged so as to contact the tip of the bristle 10, and the maximum load when compressed by 0.2 mm at a compression speed of 10 mm / min was obtained. Then, the average value of the maximum loads of the three measurement samples was obtained, divided by the area of the tufting area 12, and converted to the load per 300 mm 2 The value converted to the load per 300 mm was defined as the compression load. When the cleaning tool body 11 has only two tufting tables 9, the compression load per 300 mm was obtained in the same manner except that the two tufting tables 9 were used as measurement samples. When the cleaning tool body 11 has only one tufting area, a plurality of small areas with an area of 100 to 300 mm 2 and preferably circular and of the same area were set within the tufting area. For each small area, the average value of the maximum loads obtained by performing the same compression test as above was divided by the area of the small area, and then converted to the load per 300 mm 2 and defined as the compression load. When the tufting table 9 cannot be taken out as a measurement sample, etc., individual tufting areas 12 may be used as measurement samples and measured in the same manner as above. 2 When there are a plurality of types of bristles with different tip positions in each measurement sample, the tip position of the bristle that protrudes most from the tufting table 9 is used as the reference position, and the maximum load until the pressure head moves 0.2 mm from the reference position is obtained. As described above, it is preferable that the average value of the compression loads of the plurality of tufting tables 9 or tufting areas 12 is within the above range, but it is more preferable that the compression loads of more than half or all of the tufting tables 9 or tufting areas 12 existing on the cleaning surface side are respectively within the above range.

[0040] ​From the viewpoint of enhancing the ease of detachment and retention of the cleaning sheet as described above in relation to the bristles 10 which are the tapered bristles 14, the fiber density of the cleaning sheet 13 is preferably less than 130 kg / m 3 and more preferably less than 80 kg / m 3 and preferably 30 kg / m 3 or more, more preferably 50 kg / m 3 or more, and preferably 30 kg / m 3 or more and less than 130 kg / m 3 and more preferably less than 50 kg / m 3 or more and less than 80 kg / m 3 and less than. The cleaning sheet may be a wet cleaning sheet impregnated with a cleaning liquid, or may be a dry cleaning sheet not impregnated with a cleaning liquid. For both wet and dry cleaning sheets, the above-described fiber density is measured as the fiber density of the base sheet not impregnated with the cleaning liquid. The fiber density of the cleaning sheet can be measured by the following method.

[0041] <Method for Measuring Fiber Density> A 100 mm × 100 mm square sample was cut out from the cleaning sheet 13 and used as a sample for measurement. The samples for measurement were cut out five sheets from any five locations of a plurality of cleaning sheets 13. Next, using an electronic balance (A&D Company's electronic balance FZ-3000i, accuracy: two decimal places), the mass a of each sample was measured. Also, using a thickness gauge (manufactured by Daiei Kagaku Seiki Co., Ltd., F-60DS), a load of 0.3 kPa was applied to each sample with a 50 mm diameter disc-shaped indenter, and the thickness b after 10 seconds was measured with an accuracy of 0.01 mm. For each sample, the fiber density was calculated by the following formula, and the arithmetic mean value of the fiber densities of the five samples was taken as the fiber density in this specification. Fiber density [kg / m 3 = a [kg] / (b [m] × 1.0 × 10 -2 [m 2 ) a: Mass of the sample b: Thickness of the sample

[0042] The cleaning tool 1 of the present embodiment is excellent in the ease of attachment / detachment and the holding property of the cleaning sheet described above, not only when using a dry cleaning sheet but also when using a wet cleaning sheet. Since the wet cleaning sheet tends to be larger in mass than the dry cleaning sheet and thus it is difficult to enhance the holding property, according to the present invention, as described above, the bristles 10 including the tapered bristles 14 are structured to be reinforced on the cleaning sheet 13, so that it is difficult to release the holding of the cleaning sheet 13 by the area where the bristles 10 are implanted, and thus excellent holding property can be obtained. In relation to the bristles 10 which are the tapered bristles 14, from the viewpoint of enhancing the ease of attachment / detachment and the holding property of the cleaning sheet described above, the cleaning sheet 13 has a fiber density of less than 130 kg / m 3 and preferably has an impregnation rate of the cleaning solution of 10% or more and 400% or less, more preferably 100% or more and 300% or less. As the cleaning liquid, various types conventionally used for wet cleaning sheets can be used without particular limitation. The cleaning solution preferably contains a surfactant, but may be water or the like that does not contain a surfactant. The impregnation rate of the cleaning sheet can be measured as follows.

[0043] <Measurement method of impregnation rate> Measure the mass c of the cleaning sheet to be measured. Next, dry it sufficiently until the mass of the cleaning sheet no longer changes, and measure the mass d in the dry state. Then, calculate the impregnation rate (%) from the following formula. Impregnation rate (%) = (c - d) / d × 100

[0044] The cleaning tool 1 of the present invention is not limited to the embodiments shown in FIGS. 1 to 8. Another embodiment of the cleaning tool 1 according to the present invention will be described below. Hereinafter, for another embodiment, components different from those in the embodiments shown in FIGS. 1 to 8 will be mainly described, and the same components will be denoted by the same reference numerals and the description thereof will be omitted. For components not particularly described, the description of the embodiments shown in FIGS. 1 to 8 is appropriately applied.

[0045] In the cleaning tool 1a shown in Fig. 9, the bristles 10 are implanted in the upper surface 11b of the cleaning tool body 11. In this way, a plurality of tufts 15 formed by bundling a plurality of bristles 10 may be implanted not on the cleaning surface 11a but on the upper surface 11b of the cleaning tool body 11. Also in the cleaning tool 1a shown in Fig. 9, by inserting the bristles 10, all or part of which are tapered bristles, into the cleaning sheet 13, the cleaning sheet 13 can be fixed to the cleaning tool body 11. In the cleaning tool 1a shown in Fig. 9, as a method of inserting the cleaning sheet 13 into the bristles 10, after winding the cleaning sheet 13 around the cleaning tool body 11 so as to cover the cleaning surface 11a of the cleaning head from below, the end portion of the cleaning sheet 13 can be fixed by inserting it into the bristles 10 implanted in the upper surface 11b of the cleaning tool body 11. Thus, also in the cleaning tool 1a, the cleaning sheet 13 can be easily fixed to the cleaning tool body 11. The bristles 10 arranged on the upper surface 11b can be arranged, for example, at both end portions in the longitudinal direction X and / or both end portions in the lateral direction Y of the cleaning tool body 11.

[0046] As described above, the present invention has been described based on its preferred embodiments, but the present invention is not limited to the above embodiments and can be appropriately changed. Also, the above-described embodiments may be combined. For example, in the cleaning tool 1 of the above-described embodiment, the bristles 10 were implanted only on the cleaning surface 11a side of the cleaning tool body 11, but the bristles 10 may be implanted on each of the cleaning surface 11a side and the upper surface 11b side. Also, the bristles 10 may be implanted on the side surface located between the cleaning surface 11a and the upper surface 11b of the cleaning tool body 11. The bristles 10 may be uniformly arranged over the entire cleaning surface 11a of the cleaning tool body 11. Also, only two rows of a plurality of hair-implanted regions 12 arranged in series may be provided on the cleaning surface 11a, or the hair-implanted regions 12 may be intermittently arranged over the entire periphery near the periphery of the cleaning surface 11a.

Example

[0047] Hereinafter, the present invention will be described in more detail using examples. However, the scope of the present invention is not limited to such examples.

[0048] [Example 1] In Example 1, a hair implanting base 9 was created in which only the tapered bristles 14 having the same form as that shown in Fig. 5(b) were implanted. The tapered shape portion 16 of the tapered bristles 14 was formed by immersing the tip portion of the bristles into a known dissolving solvent to a predetermined depth. The thickness (diameter) L1 of the portion other than the tapered shape portion 16 of the obtained tapered bristles 14, the length L2 of the tapered shape portion, the hair implanting height L3, and the tip angle θ were measured and shown in Table 1. The tip angle θ of the tapered bristles is the tip angle of the tapered bristles measured by the method of <Measurement method of tip angle θ> described above. The material of the tapered bristles was nylon.

[0049] [Examples 2 to 6 and Comparative Examples 1 and 2] In Examples 2 to 6, the hair implanting base 9 was created in the same manner as in Example 1, except that the diameter L1 of the tapered bristles 14, the length L2 of the tapered shape portion, the hair implanting height L3, and the tip angle θ were made different as shown in Table 1. In Comparative Example 1, the shape of the bristles 10 was an R hair, and the hair implanting base 9 was created in the same manner as in Example 1, except that the diameter L1 of the portion other than the R hair portion, the length L2 of the tapered shape portion, the hair implanting height L3, and the tip angle θ were made different as shown in Table 1. In Comparative Example 2, the shape of the bristles 10 was cylindrical, and the hair implanting base 9 was created in the same manner as in Example 1, except that the diameter L1, the length L2 of the tapered shape portion, the hair implanting height L3, and the tip angle θ were made different as shown in Table 1. The following Table 1 shows the shape of the bristles 10, the diameter L1, the length L2 of the tapered shape portion, the hair implanting height L3, and the tip angle θ.

[0050] [Evaluation Criteria for Retention of Cleaning Sheet] The tapered bristles 14 provided on the tufting table 9 of Examples 1 to 6 and Comparative Examples 1 and 2 were inserted into the center of the cleaning sheet 13 and slowly lifted. This operation was performed three times and evaluated according to the following criteria. The results are shown in Table 1. 〇: In all three times, the entire cleaning sheet 13 could maintain a state of being separated from the floor surface for 3 seconds or more. △: The entire cleaning sheet 13 could maintain a state of being separated from the floor surface for 3 seconds or more once or twice. ×: In all three times, the entire cleaning sheet 13 could not maintain a state of being separated from the floor surface for 3 seconds or more. For the cleaning sheet 13, both dry and wet cleaning sheets were used. The cleaning sheet 13 had a fiber density of 66 kg / m 3 and the sheet thickness was 1.1 mm. Also, the basis weight was 65 g / m 2 was used. As the dry-type cleaning sheet 13, a square-shaped one cut so that the area of the cleaning sheet 13 was approximately 100 times the area of the surface where the tapered bristles 14 were planted on the tufting table 9 was used. Also, as the wet-type cleaning sheet 13, a square-shaped one cut so that the area of the cleaning sheet 13 was approximately 10 times the area of the surface where the tapered bristles 14 were planted on the tufting table 9 and impregnated with a cleaning solution so that the impregnation rate was 200% was used. As the cleaning solution, an aqueous liquid containing a surfactant was used.

[0051]

Table 1

[0052] As is clear from the results shown in Table 1, the tufting tables 9 obtained in Examples 1 to 6 had better retention of the cleaning sheet 13 than Comparative Examples 1 and 2 where the bristle tips were not tapered, in both the wet and dry cases. Among them, the retention in the dry case was particularly good. Also, in both the wet and dry cases, it was found that from the viewpoint of excellent retention, the tip angle θ of the tapered bristles 14 was preferably 0.5° or more and 15.0° or less. "R hair" in Table 1 indicates a bristle tip rounded into a hemispherical shape.

Explanation of Symbols

[0053] 1, 1a Cleaning tool 8 Concave part 9 Hair implanting table 10 Bristles 11 Cleaning tool body 11a Cleaning surface 11b Upper surface (the surface opposite to the cleaning surface) 12 Hair implanting area 13 Cleaning sheet 14 Tapered bristles 15 Bristle bundle 16 Tapered shape part 16a Taper start part 16b One side 16c The other side 17 Connection part 18 Tip 19 Handle part 25 Hair implanting hole ILc, ILd Virtual straight line X Vertical direction Y Horizontal direction θ Tip angle

Claims

1. A cleaning tool comprising a cleaning tool body having a cleaning surface facing the object to be cleaned, with a cleaning sheet mounted in a state covering the cleaning surface and used for cleaning the object to be cleaned, bristles are implanted in the cleaning tool body, and the bristles include tapered bristles having a tapered shape portion with a cross-sectional area decreasing toward the tip, The cleaning sheet is overlapped on the area where the bristles are implanted, and the tapered bristles are pierced into the cleaning sheet so that the cleaning sheet can be maintained in a state of being mounted on the cleaning tool body. Cleaning tool.

2. The cleaning tool according to claim 1, wherein the tip angle of the tapered bristle is 0.5° or more and 15.0° or less.

3. The cleaning tool according to claim 1 or 2, wherein the bristles are provided on the cleaning surface.

4. The cleaning tool according to any one of claims 1 to 3, wherein at least a part of the tapered bristles penetrate the cleaning sheet in a state where the cleaning sheet is mounted on the cleaning tool body.

5. It has a tufting area where the bristles are implanted, and the total compression load when the entire bristles existing in the tufting area are compressed by 0.2 mm from the tip side of the bristles is 0.15 N / 300 mm ２ The cleaning tool according to any one of claims 1 to 4, wherein the above conditions are satisfied.

6. The cleaning surface has a hair-implanted area where the bristles are implanted and a non-hair-implanted area where no bristles are implanted including the tapered bristles, The cleaning tool according to any one of claims 1 to 5, wherein the area ratio of the hair-implanted area on the cleaning surface is 10% or more and 90% or less.

7. The cleaning tool according to any one of claims 1 to 6, wherein a rod-shaped handle is connected to the cleaning tool body or a rod-shaped handle can be connected thereto.

8. The cleaning sheet attached to the cleaning tool body has a fiber density of less than 130 kg / m ３ The cleaning tool according to any one of claims 1 to 7, wherein the fiber density is less than 130 kg / m.

9. A wet cleaning sheet attached to and used with the cleaning tool according to any one of claims 1 to 8, The fiber density is less than 130 kg / m ３ A cleaning sheet with an impregnation rate of the cleaning liquid of 10% or more and 400% or less and less than that.

Images