Cleaning brush

Abstract

To provide a brush capable of efficiently cleaning recessed corners and the like by converging bristles at a high density without spreading the bristles radially on a curved bristle-planted surface. [Solution] The bristle-implanted surface 4 of the cleaning brush 1 includes a narrow, smooth, horizontal lower edge bristle-implanted surface 41, a narrow, smooth, vertical upper and lower edge bristle-implanted surface 42 that is at an angle of approximately 90° to the lower edge bristle-implanted surface 41, and a curved bristle-implanted surface 43 that connects the two bristle-implanted surfaces 41, 42. The width of the curved bristle-implanted surface 43 gradually increases from the ends of the bristle-implanted surfaces 41, 42. The lower edge bristle-implanted surface 41 and the vertical edge bristle-implanted surface 42 are formed with a number of fixing holes 51, 52 that are arranged in rows along the length of the bristle-implanted surface. The curved bristle-implanted surface 43 has more fixing holes 53 in the width direction than the lower edge bristle-implanted surface 41 and the vertical edge bristle-implanted surface 42. The fixing holes 53 of the curved bristle-implanted surface 43 are formed at an angle so that the tips of the bristle bundles 63 planted therein converge toward the center of the circumference of the curve and the center in the width direction.

Description

[Technical Field]

[0001] The present invention relates to a cleaning brush suitable for cleaning corners between two surfaces, such as the joints of bathroom tiles, that are a floor surface and a wall surface that is perpendicular to the floor surface. [Background technology]

[0002] Conventionally, a cleaning brush for the above-mentioned purpose is known, as disclosed in Patent Document 1. This cleaning brush comprises a thin plate-shaped base having a grip portion and a number of fixing holes formed in the base's outer peripheral bristle surface, into which numerous bristle bundles are fixed. The base's bristle surface comprises a narrow, smooth, horizontal lower edge bristle surface, a narrow, smooth, vertical edge bristle surface that forms an angle of approximately 90° with the lower edge bristle surface, and a curved bristle surface connecting these two bristle surfaces. A number of fixing holes are formed in a row in the center of the width direction through the lower edge bristle surface, the vertical edge bristle surface, and the curved bristle surface. The bristle bundles are fixed in these fixing holes so that they stand upright in relation to their respective bristle surfaces. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] European Patent Publication No. EP2428133 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional cleaning brushes described above, the bristle bundles spread out radially at the curved bristle surface where the lower edge bristle surface and the vertical edge bristle surface meet, resulting in a lower density of bristles that reach corners, such as between a floor and a wall, making it difficult to clean the corners efficiently. To efficiently reach narrow corners, the bristle surface must be narrowed and rows of bristles must be formed on this narrow bristle surface. However, it is not possible to form a large number of fixing holes concentrated in a narrow curved bristle surface. Therefore, an object of the present invention is to provide a cleaning brush having a curved bristle surface that can converge bristles at a high density without causing the bristles to spread out radially on the curved bristle surface. [Means for solving the problem]

[0005] In the following description, reference will be made to the reference numerals in the accompanying drawings, but the present invention is not limited thereto. To solve the above problems, the cleaning brush 1 of the present invention comprises a base 3 and a bristle implantation surface 4 on the outer periphery of the base, in which a number of fixing holes 5 are formed. The bristle implantation surface 4 includes a curved bristle implantation surface 43 that is curved in a generally arc-like shape over a predetermined range. The curved bristle implantation surface 43 has one and the other circumferential ends and a width in the thickness direction of the base 3. The fixing holes 5 formed in the curved bristle implantation surface 43 are inclined so that the tips of the bristle bundles 6 implanted therein converge toward the circumferential center and the widthwise center of the curve. [Effects of the Invention]

[0006] According to the present invention, the fixing holes 53 of the curved bristle-implanted surface 43 are formed at an angle so that the tips of the bristles of each bristle bundle 63 planted therein converge toward the center of the circumference of the curve and the center in the width direction, so that the tips of the bristle bundles 63 planted on the curved bristle-implanted surface 43 are densely packed, allowing for efficient cleaning of corners and other areas of the object to be cleaned. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view showing a cleaning brush according to the present invention. [Figure 2] FIG. 2 is a bottom view of the cleaning brush of FIG. 1. [Figure 3] FIG. 2 is a side view of the cleaning brush of FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2. [Figure 5] FIG. 2 is a view taken along arrows VV in FIG. [Figure 6] FIG. 6 is an enlarged cross-sectional view taken along the line VI-VI in FIG. 5. [Figure 7]2 is a perspective view of the cleaning brush of FIG. 1 as seen from the lower left. [Figure 8] 2 is an enlarged view showing bristle fixing holes of the cleaning brush of FIG. 1. FIG. [Figure 9] 2 is an enlarged explanatory view showing the relationship between the orientation of bristle bundles and fixing holes on the curved bristle implantation surface of the cleaning brush of FIG. 1. FIG. [Figure 10] FIG. 10 is a front view showing another embodiment of the base body of the cleaning brush of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described with reference to the drawings. The cleaning brush 1 comprises a synthetic resin base 3 having a grip 2, and a number of bristle bundles 6 planted in a number of fixing holes 5 formed in a bristle implantation surface 4 on the outer periphery of the base 3. The bristle bundles 6 are an aggregate of a number of bristle filaments, and are shown as cylindrical bodies in the drawings.

[0009] The base 3 is roughly a rectangular frame and comprises a smoothly extending lower frame portion 31, left and right frame portions 32, 33 rising from both ends of the lower frame portion 31, and an upper frame portion 34 connecting the upper ends of the lower and right frame portions 32, 33. A space is provided below the upper frame portion 34 and above the lower frame portion, forming a finger hook frame portion 35 that connects the left and right frame portions 32, 33. The upper frame portion 34 and the finger hook frame portion 35 form the grip portion 2.

[0010] The flocking surface 4 of the base 3 comprises a lower edge flocking surface 41, a vertical edge flocking surface 42, and a curved flocking surface 43. The lower edge flocking surface 41 is formed on the lower surface of the lower frame portion 31 and is narrow and smoothly extends horizontally. The vertical edge flocking surface 42 is formed on the outer surface of the left frame portion 32 and forms an angle of approximately 90°, preferably 70° to 110°, with respect to the lower edge flocking surface 41. It is narrow (the width in the thickness direction of the base) and extends smoothly vertically. The curved flocking surface 43 is formed in an arc shape connecting the lower edge flocking surface 41 and the vertical edge flocking surface 42. Therefore, the curved flocking surface 43 is provided in a limited area that contacts the lower edge flocking surface 41 and the vertical edge flocking surface 42 at both ends.

[0011] The width of the lower edge flocking surface 41 and the vertical edge flocking surface 42 may be the same as that of the curved flocking surface 43, but in the illustrated embodiment, the base 3 has a widened portion 36, and the curved flocking surface 43 formed therein is designed so that its width gradually increases from each end of the lower edge flocking surface 41 and the vertical edge flocking surface 42 toward the center of the curved circumference, as clearly shown in Figures 8 and 9, and its width is approximately twice the width of the flocking surfaces 41 and 42 near the center of the arc.

[0012] The lower edge flocking surface 41 and the vertical edge flocking surface 42 each have a number of fixing holes 51, 52 formed in a plurality of rows in the length direction of the flocking surface, and arranged back and forth in the length direction or adjacent to each other in the width direction.

[0013] As shown in Figure 8, the fixing holes 51, 52 of the lower edge flocking surface 41 and the vertical edge flocking surface 42 consist of a number of parallel fixing holes 51a, 52a spaced apart in the longitudinal direction and arranged in pairs in the width direction, and a number of middle row fixing holes 51b, 52b formed in the center in the width direction and positioned between adjacent parallel fixing holes 51a, 52a in the longitudinal direction. A total of three rows of bristle bundles 61a, 61b, 62a, 62b are formed in these fixing holes 51a, 51b, 52a, 52b, respectively, in the longitudinal direction, as shown in Figures 2 and 3.

[0014] As shown in FIG. 4, the fixing holes 51, 52 in the implantation surfaces 41, 42 near the curved implantation surface 43 are formed at an angle so that the hair bundles 61, 62 implanted therein are inclined toward the curved implantation surface 43 side.

[0015] 8, the curved implanted surface 43 has more fixing holes 53 in the width direction than the lower edge implanted surface 41 and the vertical edge implanted surface 42. The fixing holes 53 in the curved implanted surface 41 are formed at an angle so that the tips of the bristle bundles 6 planted therein converge toward the center of the curved circumference and the center in the width direction.

[0016] More specifically, as shown in FIG. 8, at least four central fixing holes 53a1, 53a2, 53a3, 53a4 are formed in a row in the width direction at the center of the circumference of the curved flocking surface 43, and on both sides thereof, three secondary fixing holes 53b1, 53b2, 53b3 are formed in a row in the width direction.

[0017] Of the central fixing holes 53a, the first and fourth central fixing holes 53a1, 53a4 located on both widthwise outer sides are formed at an angle so that the first and fourth central hair bundles 63a1, 63a4 fixed therein converge toward the upper center in the widthwise direction, as shown by the arrows in Fig. 9. The second central fixing hole 53a2 is formed at an angle so that the second central hair bundle 63a2 planted therein faces toward the upper center in the widthwise direction on the vertical edge hair-implanting surface 42 side, and the third central fixing hole 53a3 is formed at an angle so that the third central hair bundle 63a3 planted therein faces toward the upper center in the widthwise direction on the lower edge hair-implanting surface 41 side.

[0018] Of the secondary row fixing holes 53b, the first and third secondary row fixing holes 53b1, 53b3 located on both outer sides in the width direction are formed at an angle so that the first and third secondary row hair bundles 63b1, 63b3 planted therein converge toward the upper center in the width direction on the lower edge hair implantation surface 41 side or the vertical edge hair implantation surface 42 side, and the second secondary row fixing hole 53b2 is formed at an angle so that the second secondary row hair bundle 63b2 planted therein faces toward the upper center in the width direction on the lower edge hair implantation surface 41 side or the vertical edge hair implantation surface 42 side.

[0019] The cleaning brush 1 is used by placing the upper frame 34 on the palm, placing the four fingers other than the thumb on the finger-holding frame 35, and gripping the grip 2. For example, when cleaning the tile joints on a floor, the row of bristle bundles 61 on the lower frame side is placed against the floor joint, and the brush 1 is moved back and forth along the joint. When the floor joint reaches the corner where the wall joint joins, the bristle bundles 63 on the curved bristle surface 43 hit the corner intensively. Moving the brush 1 back and forth and up and down works in cooperation with the bristle bundles 61, 62 to efficiently remove dirt from the corner. The brush 1 of the present invention can also be used to clean areas other than joints.

[0020] The shape of the base body 3 in the cleaning brush 1 of the present invention is not limited to that shown in the drawings.

[0021] For the sake of clarity, a modified example of only the base body 3 is shown in Fig. 10. In this figure, components equivalent to those in the previous embodiment are given the same reference numerals, and the description thereof will be omitted.

[0022] 10(A), the grip portion 2 of the base body 3 extends obliquely at an angle of approximately 45° from the connection between the lower frame portion 31 and the left frame portion 32. The lower frame portion 31, the left frame portion 32, and the outer surfaces connecting the two frame portions are formed with a lower edge flocking surface 41, a vertical edge flocking surface 42, and a curved flocking surface 43, respectively.

[0023] In another embodiment shown in FIG. 10(B), the grip portion 2 extends from the upper end of the left frame portion 32 substantially parallel to the lower frame portion 31.

[0024] In another embodiment shown in Figure 10(C), the base 3 is a rectangular rod bent into a roughly L-shape, and the grip portion 2 extends straight from the lower edge flocking surface 41 and terminates short on the vertical edge flocking surface 42 side. A curved flocking surface 43 is formed between the lower edge flocking surface 41 and the vertical edge flocking surface 42. The orientation of the bristle bundles planted on the lower edge flocking surface 41, the vertical edge flocking surface 42, and the curved flocking surface 43 is the same as in the previous embodiment.

[0025] In the cleaning brush 1 of any of the above embodiments, cleaning work is performed by gripping the grip portion 2. The base body 3 may also have a structure without a grip portion. [Explanation of symbols]

[0026] 1 brush 2 Grip 3 Base 31 Lower frame part 32 Left frame 33 Right frame 34 Upper frame part 35 Finger hook frame 36 Widening section 4 Flocked surface 41 Lower edge flocking surface 42 Vertical edge flocked surface 43 Curved flocked surface 5 fixing hole 51 Lower edge fixing hole 51a Parallel fixing hole 51b Middle row fixing hole 52 Vertical edge fixing holes 52a parallel fixing hole 52b Middle row fixing hole 53 Curved section fixing hole 53a1~4 Center fixing hole 53b1~3rd row fixing hole 6 Hair bundle 61 Lower edge hair bundle 61a Parallel hair bundle 61b Middle row hair bundle 62 Vertical edge hair bundle 62a Parallel hair bundle 62b Middle row hair bundle 63 Curved section hair bundle 63a1~4 Central hair bundle 63b1~3rd row hair bundle

Claims

1. The brush comprises a base body and a number of bristle bundles planted in a number of fixing holes formed on a bristle planting surface on the outer periphery of the base body, the flocking surface comprises a horizontally smooth lower edge flocking surface, a vertical edge flocking surface that is at a predetermined angle to the lower edge flocking surface, and a curved flocking surface that is approximately arc-shaped and connects the lower edge flocking surface and the vertical edge flocking surface; the curved flocking surface has one circumferential end connected to the lower edge flocking surface, the other circumferential end connected to the vertical edge flocking surface, and a width in the thickness direction of the base body; The lower edge flocking surface and the vertical edge flocking surface each have a plurality of rows of fixing holes formed in the longitudinal direction of the flocking surface, the rows being adjacent to each other in the longitudinal direction or the width direction; At positions on the lower edge flocking surface and the vertical edge flocking surface adjacent to one end and the other end of the curved flocking surface, the tip side of each of the bristle bundles planted there is formed inclined toward the curved flocking surface with respect to the perpendicular to the lower edge flocking surface or the vertical edge flocking surface so that the tip side of each of the bristle bundles faces upward toward the curved flocking surface, the curved flocking surface is provided so that its width gradually increases toward the center of the circumference between the one end and the other end, At least four central fixing holes (first through fourth) are formed in a row in the width direction at a midpoint between one end and the other end of the curved flocking surface in the circumferential direction, The first and fourth central fixing holes located on both outer sides of the curved hair implantation surface in the width direction are formed at an incline so that the tips of the first and fourth central hair bundles implanted therein converge toward the upper center in the width direction, The second central fixing hole adjacent to the inside of the first central fixing hole is formed at an angle away from the center of the circumferential direction of the curved hair implantation surface so that the tip of the second central hair bundle implanted therein is adjacent to one side between the first and fourth central hair bundles, A cleaning brush characterized in that the third central fixing hole adjacent to the inside of the fourth central fixing hole is formed at an angle away from the center of the circumferential direction of the curved bristle implantation surface so that the tip of the bristles of the third central bristle bundle implanted therein is adjacent to the other side between the first and fourth central bristle bundles.

2. The curved flocking surface further has at least three secondary row fixing holes, numbered first to third, formed in a single row in the width direction, located on both sides of the central row of fixing holes, The first and third secondary row fixing holes located on both outer sides in the width direction of the curved hair implantation surface are formed at an angle such that the tips of the first and third secondary row hair bundles implanted therein are adjacent to each other above the center in the width direction of the curved hair implantation surface, sandwiching the second central hair bundle or the third central hair bundle; The cleaning brush described in claim 1, characterized in that the second sub-row fixing holes located between the first and third sub-row fixing holes are formed at an angle so that the tips of the bristles of the second sub-row bristle bundles planted therein are adjacent to the lower edge bristle implantation surface side or the vertical edge bristle implantation surface side between the first and third sub-row bristle bundles.

3. The cleaning brush according to claim 1 or 2, characterized in that the fixing holes on the lower edge bristle surface of the base body consist of a number of parallel fixing holes formed in pairs in the width direction and spaced apart from each other in the length direction, and a number of middle-row fixing holes formed in the center of the width direction and positioned between each of the parallel fixing holes adjacent to each other in the length direction.

4. The cleaning brush according to claim 1 or 2, characterized in that the fixing holes on the vertical edge bristle surface of the base body consist of a number of parallel fixing holes formed in pairs in the width direction and spaced apart from each other in the length direction, and a number of middle-row fixing holes formed in the center of the width direction and positioned between each of the parallel fixing holes adjacent to each other in the length direction.

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