JP7534585B2 - Sliding door device cleaning tool - Google Patents

Description

The present invention relates to a cleaning tool used in sliding door devices to remove dust that adheres to the lower guide rail or floor surface.

Sliding door devices used in buildings open and close when rollers attached to the underside of the sliding door run on the lower guide rail (or floor surface). If dust accumulates on this lower guide rail, the rollers may climb up onto the dust as they run, hindering the movement of the sliding door and generating abnormal noises. For this reason, various cleaning tools have been devised that can clean the guide rail (or floor surface) in sync with the opening and closing movement of the sliding door.

For example, the technologies of Patent Documents 1 and 2 constantly clean the rails arranged on the floor surface as the sliding door moves, allowing the sliding door to always open and close smoothly. In addition, even if the height position of the wheels relative to the sliding door is adjusted, the cleaning tool also moves in the height direction, so the cleaning function can be performed reliably.

JP 2008-25300 A JP 2015-227564 A

The cleaning tool in Patent Document 1 is attached integrally to the rotating shaft of the roller of the door wheel. This cleaning tool cannot be attached or detached unless the rotating shaft is removed from the roller, so installation and replacement are not easy.

The cleaning tool in Patent Document 2 is attached to the roller mounting seat by bending the bending claws. However, bending the tool in a small space is not easy, and installation and replacement work is time-consuming. In addition, when fixing the tool with the bending claws, the attachment position of the cleaning tool is easily shifted, and if it shifts, there is a risk that sufficient cleaning cannot be performed.

The present invention was made in consideration of the above-mentioned circumstances, and its purpose is to provide a cleaning tool for a sliding door device that can be easily attached and detached from the cleaning tool attached to the door roller.

In order to solve the above-mentioned problems, the cleaning tool for the sliding door device of the present invention is attached to a wheel installed above or below the sliding door, and is equipped with a cleaning means for cleaning dust that has adhered to the above or below of the wheel, and has a rotating shaft insertion hole that extends in the vertical direction and engages with the rotating shaft of the wheel, and when the cleaning tool is pushed in from above or below and attached, it is equipped with elastic wall parts that sandwich the wheel and engage with the rotating shaft of the wheel and the rotating shaft insertion hole at both ends in the front-to-rear direction, and the elastic wall part is characterized in that it has a slit that continues from its upper end to the rotating shaft insertion hole and divides the upper part of the elastic wall part into left and right parts.

The cleaning tool for the sliding door device of the present invention is attached to a wheel installed above or below the sliding door and is equipped with a cleaning means for cleaning dust attached to the above or below of the wheel, and has a rotating shaft insertion hole that extends in the vertical direction and engages with the rotating shaft of the wheel, and when the cleaning tool is pushed in from above or below and attached, has elastic wall parts that engage with the rotating shaft of the wheel and the rotating shaft insertion hole at both ends in the front-to-rear direction so as to sandwich the wheel, and the lower part of the elastic wall part is provided with a pressing part that opens the upper part of the elastic wall part outward in the front-to-rear direction when the elastic wall part is pressed inward in the front-to-rear direction.

An engagement protrusion can also be provided that abuts against the inner side of the wheel to prevent the cleaning tool from rotating.

Furthermore, the upper end of the elastic wall portion may be tapered, slanting diagonally downward from the outside to the inside.

The cleaning tool for the sliding door device according to the present invention has an elastic wall portion that extends in the vertical direction and has a rotating shaft insertion hole that engages with the rotating shaft of the door roller, and when the cleaning tool is pushed in from below and attached, the rotating shaft of the door roller and the rotating shaft insertion hole engage at both ends in the front-rear direction so as to sandwich the door roller. The elastic wall portion has a slit that continues from its upper end to the rotating shaft insertion hole and divides the upper part of the elastic wall portion into left and right, so that the cleaning tool can be easily attached and detached with one touch by utilizing the elasticity of the elastic wall portion. Therefore, when installing or replacing the cleaning tool, there is no need to remove the door roller from the sliding door, which shortens the work time. In addition, by engaging with the rotating shaft, the cleaning tool is less likely to shift position, and cleaning can be performed reliably.

The cleaning tool for the sliding door device according to the present invention extends in the vertical direction and has a rotation shaft insertion hole that engages with the rotation shaft of the door roller, and when the cleaning tool is pushed in from below and attached, it has an elastic wall portion in which the rotation shaft of the door roller and the rotation shaft insertion hole engage at both ends in the front-to-rear direction so as to elastically sandwich the door roller, and a pressing portion is provided at the lower part of the elastic wall portion so that when the elastic wall portion is pressed inward in the front-to-rear direction, the upper part of the elastic wall portion opens outward in the front-to-rear direction, so that it is possible to obtain the same effect as the configuration described above.

1 is a schematic perspective view of a sliding door device to which a cleaning tool according to an embodiment of the present invention is attached, showing a state in which a door roller is placed on a guide rail. FIG. 2 is a schematic perspective view showing a state in which the sliding door is lifted up from the state shown in FIG. 1 . FIG. 4 is a front view showing the door roller alone with a cleaning tool attached. FIG. 4 is a perspective view of FIG. 3 as seen obliquely from below. FIG. 5 is an exploded perspective view showing a state in which the cleaning tool is removed from the state shown in FIG. 4 . This is a cross-sectional view taken along line B-B of FIG. 4A is a right side view of the door roller shown in FIG. 3, and FIG. 4B is a cross-sectional view taken along the line A-A of FIG. FIG. 2 is a perspective view of the cleaning tool alone according to the first embodiment of the present invention, as viewed diagonally from above right. 1A is a bottom view of a cleaning tool according to a first embodiment of the present invention, FIG. 1B is a front view of the cleaning tool, and FIG. FIG. 11 is a perspective view of a cleaning tool according to a second embodiment of the present invention, viewed from diagonally above to the right. 11A is a front view of a cleaning tool according to a second embodiment of the present invention, and FIG. 11B is a front view of the cleaning tool bent in the M direction from the state shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cleaning tool for a sliding door device according to an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a sliding door device 1 to which a cleaning tool 20 according to an embodiment of the present invention is attached, and FIG. 2 is a perspective view showing a state in which the sliding door 2 is lifted up from the state shown in FIG.

In this embodiment, the terms front-back, left-right, and up-down refer to the directions when a user views the sliding door device 1 from the front, and are the directions shown in FIG. 1. The opening and closing direction of the sliding door 2 refers to the left-right direction.

As shown simply in Figures 1 and 2, the sliding door device 1 is equipped with a sliding door 2 that moves left and right to open and close, and a door roller 10 is attached to the underside of the sliding door 2, which is placed on a lower guide rail 3 and supports the load of the sliding door 2. Also, an upper guide rail (not shown) and guide rollers (not shown) are provided on the upper side of the sliding door 2 to guide the sliding door 2 in the opening and closing direction.

In the sliding door device 1 of this embodiment, the rollers 15a (see Figures 3 to 5) of the rollers 10 are mounted on the lower guide rail 3, but there are also devices in which the rollers 15a run directly on the floor of the building without the lower guide rail 3. There are also devices in which the upper guide rail receives the load of the sliding door 2, and the lower guide rail 3 and rollers 10 regulate a small amount of the load and its position in the front-to-rear direction.

First Embodiment
Fig. 3 is a front view showing the door roller 10 alone with the cleaning tool 20 attached, and Fig. 4 is a perspective view of Fig. 3 as seen from diagonally below. Fig. 5 is an exploded perspective view showing the state in which the cleaning tool 20 has been removed from Fig. 4, and Fig. 6 is a cross-sectional view taken along line B-B of Fig. 3. Fig. 7(A) is a right side view of the door roller shown in Fig. 3, and Fig. 7(B) is a cross-sectional view taken along line A-A of Fig. 7(A).

The roller 10 is composed of a roller mounting part 11 that forms the outside of the roller 10, and a roller holder 15 that is attached to the lower center of the roller mounting part 11. The roller 10 is fitted into an arc-shaped notch provided on the underside of the sliding door 2 by pushing it from the rear side to the front side, and then fixed in place using a screw.

The roller mounting portion 11 is made up of a side portion 11a formed in a U-shape that is open at the bottom, corresponding to the cutout shape described above, and a decorative surface 11c located in the front portion. In addition, the decorative surface 11c is provided with a mounting countersunk hole 11b for fixing the roller 10 to the sliding door 2.

The roller holder 15 is formed in a roughly rectangular shape and is inserted into the above-mentioned U-shaped interior of the side portion 11a. When inserted, the roller holder 15 is attached so that it can slide up and down. The roller holder 15 is also provided with a rotation shaft 15b that extends in the front-rear direction, and a roller 15a that can rotate around the rotation shaft 15b is attached to it.

As shown in FIG. 7(B), the roller holder 15 can be finely adjusted in height by rotating the height adjustment screw 12 with a tool. More specifically, the roller holder 15 moves up and down when the driving unit 13a provided on the side surface 11a pulls up (pulls down) the driven unit 13b provided on the roller holder 15 using a rod (not shown). This allows the roller 15a to be finely adjusted in the vertical position relative to the bottom surface of the sliding door 2. When the height position of the roller holder 15 (roller 15a) has been finely adjusted in this way, the lower side of the roller 15a protrudes from the lower side of the side surface 11a.

The above-mentioned door roller 10 is a type that has been used for a long time and is generally used in existing buildings. With this door roller 10 attached to the sliding door 2, the cleaning tool 20 of the present invention can be attached from below in a removable manner. Naturally, the cleaning tool 20 of the present invention can also be attached to the door roller 10 of a newly installed sliding door device 1.

Figure 8 is a perspective view of the cleaning tool 20 alone, seen from diagonally above to the right. Also, Figure 9 (A) is a bottom view of the cleaning tool 20, (B) is a front view, and (C) is a right side view.

The cleaning tool 20 is composed of an attachment part 21 located on the upper side, and two mohair pieces 25 (cleaning means) attached to the lower side of this attachment part 21 with a space between them in the left-right direction (so as to sandwich the roller 15a in the left-right direction). This cleaning tool 20 is attached with a single touch by pushing it vertically from the underside of the sash roller 10, and can be easily removed by pulling it out downwards while pressing part F, which will be described in detail later.

As shown in Figures 8 and 9, the mounting portion 21 is composed of two elastic wall portions 22, 22 spaced apart in the front-rear direction, and cleaning means mounting portions 23, 23 that are arranged on the left-right outer sides of the elastic wall portions 22, 22 and connect the elastic wall portions 22, 22 in the front-rear direction. Also, as shown in Figure 9(A), in a plan view, four engagement protrusions 24 that protrude in the vertical direction are provided at the four corners of the internal space 21a surrounded by the two elastic wall portions 22, 22 and the two cleaning means mounting portions 23, 23.

The mounting portion 21 is integrally molded from an elastic resin material. It may also be made of metal as long as it is an elastic material, and the elastic wall portions 22, 22 and the cleaning means mounting portion 23, 23 may be constructed as separate bodies.

As shown in FIG. 9(B), the elastic wall portion 22 has a mountain-like shape that protrudes upward when viewed from the front, and a rotating shaft insertion hole 22a is provided in the center of each of them so that it penetrates in the front-rear direction. As shown in FIG. 4 and FIG. 5, when attaching the cleaning tool 20, the elastic wall portions 22, 22 are attached so as to sandwich the door roller 10 in the front-rear direction, and the rotating shaft insertion holes 22a, 22a each engage with the rotating shaft 15b that protrudes slightly in the front-rear direction of the door roller 10. By engaging the rotating shaft 15b in this way, the installation position of the cleaning tool 20 in the up-down and left-right directions is regulated, and the cleaning tool 20 is fixed to the door roller 10.

The elastic wall portions 22 are formed vertically or slightly inclined toward the internal space 21a. As a result, when the cleaning tool 20 is attached so as to sandwich the door roller 10, the two elastic wall portions 22 clamp the door roller 10 by their elasticity.

In addition, as shown in FIG. 8, the upper edge of the elastic wall portion 22 is provided with a taper 22b that slopes downward from the outer side of the elastic wall portion 22 in the front-to-rear direction toward the internal space 21a. When the cleaning tool 20 is pushed in from below the roller 10 to be attached, this taper 22b abuts against the rotation shaft 15b of the roller 10, and the upper part of the elastic wall portion 22 opens outward in the front-to-rear direction, allowing for easy attachment with a single touch.

Furthermore, a pressing portion F is provided at the bottom of the elastic wall portion 22, located below the rotary shaft insertion hole 22a. When a pressing force is applied from the outside to the inside in the front-to-rear direction, the elasticity of the elastic wall portion 22 causes the upper side of the elastic wall portion 22 to open outward in the front-to-rear direction (the opposite direction to the pressing direction). The amount of this outward opening is determined by designing the plate thickness of the elastic wall portion 22 to an optimal dimension. As a result, when removing the cleaning tool 20 from the roller 10, pressing the pressing portion F releases the engagement between the rotary shaft 15b and the rotary shaft insertion hole 22a, allowing it to be easily removed with a single touch.

The engagement protrusion 24 is located in a position that contacts the inner side surface of the roller holder 15 but does not contact the roller 15a when the cleaning tool 20 is attached to the roller 10. If the attachment part 21 is designed to only engage with the rotation shaft 15b when attaching the cleaning tool 20, the cleaning tool 20 will rotate left and right around the rotation shaft 15b when the sliding door 2 is opened and closed. By providing this engagement protrusion 24, the cleaning tool 20 will not rotate against this rotational force (rotational moment) and will always be installed in a specified position.

When this cleaning tool 20 is attached to the roller 10, the roller 15a of the roller 10 protrudes downward from the lower opening of the internal space 21a and runs on the lower guide rail 3.

The mohair 25 is replaceably attached to the underside of the cleaning means attachment portion 23. That is, the mohair 25 is arranged on both the left and right sides of the roller 15a and is in constant contact with the lower guide rail 3, so that dust is removed regardless of whether the sliding door 2 moves to the left or right.

According to the first embodiment of the present invention, the cleaning tool 20 of the sliding door device extends in the vertical direction and has elastic wall portions 22, 22 that, when the cleaning tool 20 is attached, engage with the rotating shaft 15b of the door roller 10 at both ends in the front-rear direction so as to sandwich the door roller 10. The lower part of the elastic wall portions 22, 22 is provided with a pressing portion F that opens the upper part of the elastic wall portions 22, 22 outward in the front-rear direction when the elastic wall portions 22, 22 are pressed inward in the front-rear direction, so that the cleaning tool 20 can be easily attached and detached with one touch by utilizing the elasticity of the elastic wall portions 22, 22. Therefore, when installing or replacing the cleaning tool 20, it is not necessary to remove the door roller 10 from the sliding door 2, and the work time can be shortened. In addition, the elastic wall portions 22, 22 engage with the rotating shaft 15b, so that the position of the cleaning tool 20 is less likely to shift, and cleaning can be performed reliably. Furthermore, even if the height position of the roller 10 is adjusted, the cleaning tool 20 moves following the height position of the rotating shaft 15b, so the height positions of the roller 15a of the roller 10 and the mohair 25 of the cleaning tool 20 can always be kept constant. Therefore, the distance from the lower guide rail 3 to the mohair 25 can also be kept constant, making cleaning more reliable.

In addition, an engagement protrusion 24 is provided that abuts against the inner side surface of the roller 10 to prevent the cleaning tool 20 from rotating, so the cleaning tool 20 can be prevented from rotating around the rotation axis 15b of the roller 10. Therefore, even if the sliding door 2 is moved left or right, the cleaning tool 20 does not rotate in that direction, allowing for more reliable cleaning.

In addition, the upper ends of the elastic wall portions 22, 22 are formed with tapers 22b, 22b that slope diagonally downward from the outside to the inside, so that when the cleaning tool 20 is pushed into the door roller 10 to be attached, the tapers 22b, 22b come into contact with the end of the rotating shaft 15b, making it easier for the elastic wall portions 22, 22 to open outward in the front-to-rear direction. This allows the cleaning tool 20 to be easily attached to the door roller 10 with a single touch, and shortens the work time required to attach the cleaning tool 20.

Second Embodiment
Fig. 10 is a perspective view of the cleaning tool according to the second embodiment of the present invention, viewed from diagonally above to the right. Also, Fig. 11 is a front view of the cleaning tool according to the second embodiment of the present invention, in which (A) is a front view and (B) is a front view showing the cleaning tool bent in the M direction from the state shown in (A).
In the following description and in Figures 10 and 11, components that are identical to those described in the first embodiment and that have the same functions and effects are given the same reference symbols, and detailed descriptions of those components will be omitted.

10 and 11, the cleaning tool 120 according to the second embodiment has slits 120c, 120c provided in the upper portions of the elastic wall portions 22, 22. The slits 120c are continuous from the upper ends of the elastic wall portions 22, 22 to the rotation shaft insertion hole 22a, and divide (separate) the upper portions of the elastic wall portions 22, 22 into left and right portions.

The slit 120c allows the upper parts of the elastic wall parts 22, 22 to bend outward in the front-to-rear direction more easily, and when the cleaning tool 120 is pushed in from below the roller 10 to be attached, it comes into contact with the rotation shaft 15b of the roller 10, and the upper part of the elastic wall part 22 opens outward in the front-to-rear direction. In other words, by providing the slit 120c, it is made easier to open outward than the configuration of the first embodiment.

When removing the cleaning tool 120 downward from the roller 10, as shown in FIG. 11(A), the cleaning means attachment parts 23, 23 located on both the left and right sides are bent downward in the direction M, and as shown in FIG. 11(B), the left-right spacing of the slit 120c is widened. This loosens the engagement between the rotating shaft 15b and the rotating shaft insertion hole 22a, making it easier to remove the cleaning tool 120 from the roller 10.

Furthermore, when the cleaning means attachment parts 23, 23 are bent in the M direction, the upper parts of the elastic wall parts 22, 22 open outward in the front-rear direction. As a result, when removing the cleaning tool 120 from the roller 10, bending the cleaning means attachment parts 23, 23 in the M direction releases the engagement between the rotating shaft 15b and the rotating shaft insertion hole 22a, allowing it to be easily removed with a single touch.

The above describes the sliding door device cleaning tools 20 and 120 according to the embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and various modifications and variations are possible based on the technical concept of the present invention.

For example, in this embodiment, mohair 25 is attached to the cleaning tool 20, 120 as a cleaning means, but this is not limited to this. For example, any object that can reliably remove dust, such as a sponge or a brush, can be used as a cleaning means.

In addition, in this embodiment, one engagement protrusion 24 is provided at each of the four corners of the internal space 21a in a plan view (four in total), but this is not limited to this. For example, by providing one on each side of the roller 15a (two in total), at least on the diagonal corners of the above-mentioned four corners, it is possible to prevent the cleaning tool 20 from rotating left and right.

In addition, in this embodiment, the cleaning tools 20, 120 are attached to the rollers 10 on the lower side of the sliding door 2, but of course they can also be detachably attached to a roller attached to the upper side of the sliding door 2 in a similar manner. In this case, the cleaning tools 20, 120 are attached by pushing them from the top to the bottom of the rollers, and the mohair 25 removes dust that has adhered to the rolling surface of the upper guide rail.

REFERENCE SIGNS LIST 1 sliding door device 2 sliding door 3 lower guide rail 10 door roller 11 door roller mounting portion 11a side portion 11b mounting countersink 11c decorative surface 12 height adjustment screw 13a driving portion 13b driven portion 15 roller holder 15a roller 15b rotating shaft 20, 120 cleaning tool 21 mounting portion 21a internal space 22 elastic wall portion 22a rotating shaft insertion hole 22b taper 23 cleaning means mounting portion 24 engagement protrusion 25 mohair (cleaning means)
120c Slit F Pressing part M Bending direction

Claims (4)

A cleaning tool for a sliding door device, comprising a cleaning means attached to a roller installed on the upper or lower side of a sliding door, for cleaning dust adhering to the upper or lower side of the roller,
The cleaning tool has an elastic wall portion that extends in the vertical direction and has a rotation shaft insertion hole that engages with the rotation shaft of the door roller, and when the cleaning tool is pushed in from above or below and attached, the door roller is elastically sandwiched between the elastic wall portion and the rotation shaft of the door roller and the rotation shaft insertion hole at both ends in the front-rear direction,
A cleaning tool for a sliding door device, wherein the elastic wall portion has a slit that continues from its upper end to the rotation shaft insertion hole and divides the upper portion of the elastic wall portion into left and right halves. A cleaning tool for a sliding door device, comprising a cleaning means attached to a roller installed on the upper or lower side of a sliding door, for cleaning dust adhering to the upper or lower side of the roller,
The cleaning tool has an elastic wall portion that extends in the vertical direction and has a rotation shaft insertion hole that engages with the rotation shaft of the door roller, and when the cleaning tool is pushed in from above or below and attached, the door roller is elastically sandwiched between the elastic wall portion and the rotation shaft of the door roller and the rotation shaft insertion hole at both ends in the front-rear direction,
A cleaning tool for a sliding door device, characterized in that a pressing portion is provided at the lower part of the elastic wall portion, which opens an upper part of the elastic wall portion outward in the front-to-rear direction when the elastic wall portion is pressed inward in the front-to-rear direction. The cleaning tool for a sliding door device according to claim 1 or 2, characterized in that it has an engagement protrusion that abuts against the inner surface of the door roller to prevent the cleaning tool from rotating. The cleaning tool for a sliding door device according to any one of claims 1 to 3, characterized in that the upper end of the elastic wall portion is tapered, slanting diagonally downward from the outside to the inside.

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