Fitting

Abstract

To provide a fitting enabling a door roller of a sliding door to maintain smooth traveling property and slidability.SOLUTION: A fitting comprises: an opening frame constituted by assembling an upper frame, a lower frame, and a pair of right and left vertical frames into a frame shape; and a sliding door that is movably provided on the opening frame. The lower frame has a lower rail part to guide movement of the sliding door. The sliding door has a door roller unit including a door roller traveling along the lower rail part. The door roller unit is disposed at a position overlapped with the lower rail part in a depth direction and has a cleaning part contacting with a surface of the lower rail part.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to building materials. [Background technology]

[0002] In general, in sashes for residential fixtures, a sliding door opens and closes by a roller moving along a rail. In order to improve the smooth running and sliding properties of the roller, Patent Document 1 discloses a roller unit having a roller with a flange portion as a brim portion on one side edge of the wheel, and a frame body that rotatably supports the roller. The roller unit of Patent Document 1 holds the sliding door in the projection direction by engaging the flange portion arranged on one side of the rail portion in the projection direction and a part of the frame body arranged on the other side of the projection direction with the rail portion.

[0003] When a door roller has flanges on both side edges of the wheel, and the flanges on both sides engage with the rails on both sides in the projection direction, the gap between the flanges on both sides becomes an undercut when the door roller is manufactured by injection molding. If the axial direction of the wheel is the direction of release from the mold, the direction perpendicular to the axial direction of the wheel is the direction of release from the undercut, so molding lines are formed in the radial direction of the wheel, and the roundness of the bottom surface of the undercut, which is the rolling surface for the rail, decreases.

[0004] The door roller disclosed in Patent Document 1 has a flange portion formed only on one side edge of the wheel and does not have an undercut portion, so that no molding lines are formed in the radial direction of the wheel, resulting in smoother running and improved sliding properties. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2010-144373 A Summary of the Invention [Problem to be solved by the invention]

[0006] Under normal usage conditions, for example, because screen doors are placed on the outdoor side, fine foreign matter such as sand, dust, and pollen adhere to and accumulate on the rollers and the lower frame including the rails. Fine foreign matter adversely affects the smooth running and sliding properties of the rollers of screen doors, and the problem is that the adverse effects tend to become more noticeable over time after installation. Problems caused by fine foreign matter are not limited to screen doors, but occur in sliding doors including shoji screens.

[0007] The present disclosure has been made in consideration of the above points, and aims to provide a fixture that can maintain the smooth running and slidability of the door rollers in a sliding door. [Means for solving the problem]

[0008] A first aspect of the present disclosure is a fitting comprising an opening frame formed by framing all four sides with an upper frame, a lower frame, and a pair of left and right vertical frames, and a sliding door movably arranged on the opening frame, wherein the lower frame has a lower rail portion that guides the movement of the sliding door, the sliding door has a wheel unit including wheels that run along the lower rail portion, the wheel unit is positioned at a position overlapping with the lower rail portion in the forward direction, and has a cleaning portion that contacts the surface of the lower rail portion. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing an embodiment of the present disclosure, showing a fitting as viewed from the outdoor side. [Diagram 2] FIG. [Diagram 3] 1 is a perspective view of the left end portion of the lower rail portion. FIG. [Figure 4] FIG. 4 is an exploded perspective view of the roller unit as viewed from the outdoor side. [Diagram 5] FIG. 4 is an exploded perspective view of the door roller unit as viewed from the indoor side. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 4 is a bottom view of the cleaning unit body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the fittings of the present disclosure will be described with reference to Figures 1 to 9. The following embodiment shows one aspect of the present disclosure, does not limit the disclosure, and can be modified as desired within the scope of the technical ideas of the present disclosure. In addition, in the following drawings, the scale of each structure is different from the actual structure in order to make each configuration easier to understand.

[0011] As shown in Fig. 1, the fitting 1 is installed, for example, in an opening in the exterior wall of a building such as a detached house. The fitting 1 is a sliding window that separates the interior and exterior sides of the building. The fitting 1 is configured by supporting a paper screen 20 and a screen door 30 movably on an opening frame 10. The paper screen 20 and the screen door 30 correspond to sliding doors.

[0012] The opening frame 10 is formed by a framework on all four sides: an upper frame 11, a lower frame 12, and left and right vertical frames 13. The opening frame 10 is provided along the edge of an opening in the exterior wall of a building.

[0013] As shown in Fig. 2, the upper frame 11 has an upper rail portion 11a for the shoji screen and an upper rail portion 11b for the screen door. The upper rail portion 11a for the shoji screen guides the upper portion of the shoji screen 20 so that it can move left and right. The upper rail portion 11b for the screen door guides the upper portion of the screen door 30 so that it can move left and right.

[0014] The bottom frame 12 has a bottom rail portion 12a for the shoji screen, and a bottom rail portion 12b for the screen door 30. The bottom rail portion 12a for the shoji screen guides the lower portion of the shoji screen 20 so that it can move left and right. The bottom rail portion 12b for the screen door guides the lower portion of the screen door 30 so that it can move left and right. The bottom rail portion 12b guides the movement of the screen door 30. The bottom rail portion 12b has a protrusion 12c. The protrusion 12c is located at the upper end of the bottom rail portion 12b. The protrusion 12c has a circular cross section.

[0015] The shoji screen 20 is constructed by fitting glass 24 inside a frame body made of an upper frame 21, a lower frame 22, and a pair of vertical frames 23 on the left and right. The shoji screen 20 is installed in a set both indoors and outdoors. The upper rail section 11a for the shoji screen is inserted into the upper insertion groove 21a formed in the upper frame 21 of the shoji screen 20. The lower rail section 12a for the shoji screen is inserted into the lower insertion groove 22a formed in the lower frame 22 of the shoji screen 20. The shoji screen roller 25, which is rotatably arranged in the lower insertion groove 22a of the lower frame 22, is placed on the upper surface of the lower rail section 12a for the shoji screen so as to be able to roll. The shoji screen 20 can be opened and closed along the longitudinal direction of the upper frame 11 and the lower frame 12, which is the viewing direction.

[0016] The screen door 30 is a surface material in which a screen 34 is stretched inside a frame assembled on all four sides by a screen door upper frame 31, a screen door lower frame 32, and a pair of left and right screen door vertical frames 33. The screen door 30 is placed on the outdoor side of the outdoor-facing shoji screen 20. The screen door 30 has a wheel unit 50 including a wheel 51. The wheel 51 is freely rotatable around an axis extending in the forward direction.

[0017] In the screen door 30, the upper rail portion 11b for the screen door is inserted into the upper insertion groove 31a for the screen door formed in the upper frame 31 for the screen door. The upper insertion groove 31a fits into the upper rail portion 11b. The upper insertion groove 31a corresponds to the upper fitting portion.

[0018] The screen door 30 has a screen door lower rail portion 12b inserted into a screen door lower insertion groove 32a formed in the screen door lower frame 32. A roller unit 50 is provided in the screen door lower insertion groove 32a. The screen door 30 has a roller 51 that runs along the lower rail portion 12b. The screen door 30 has the roller 51 rollably placed on the upper surface of the protrusion 12c of the lower rail portion 12b. The screen door 30 can be opened and closed in the left-right direction along the protrusion 12c of the lower rail portion 12b.

[0019] The roller units 50 are provided at both left and right ends of the screen door bottom frame 32. The roller units 50 are arranged symmetrically in the left and right directions on the screen door bottom frame 32. Below, the left roller unit 50 will be described, and a description of the right roller unit 50 will be omitted.

[0020] As shown in Figures 3 to 5, the door roller unit 50 has a door roller 51, a frame portion 50A, a torsion coil spring 55, and a cleaning portion 70. The frame portion 50A has an inner frame 52, a middle frame 53, and an outer frame 54. The middle frame 53 corresponds to the first frame portion. The inner frame 52 corresponds to the second frame portion. In Figure 3, the upper screen door frame 31, the lower screen door frame 32, and the pair of left and right screen door vertical frames 33 of the screen door 30 are not shown.

[0021] The door roller 51 is fixed to the inner frame 52 by the rotating shaft 51a so as to be rotatable from the indoor side. The door roller 51 has a rolling surface 51b and a flange 51c. The rolling surface 51b is an outer peripheral surface centered on the rotating shaft 51a. The rolling surface 51b is a surface that rolls on the upper surface of the protrusion 12c of the lower rail portion 12b. The flange 51c extends from the indoor end of the rolling surface 51b to the outside in the radial direction centered on the rotating shaft 51a. The flange 51c has an engagement surface 51d. When the door roller 51 rolls on the upper surface of the protrusion 12c on the rolling surface 51b, the engagement surface 51d engages with the lower rail portion 12b from the indoor side to guide the movement of the screen door 30, as shown in FIG. 2.

[0022] When the roller unit 50 rolls on the upper surface of the projection 12c on the rolling surface 51b, a guide portion 61 (described later) provided on the outer frame 54 engages with the lower rail portion 12b from the outdoor side to guide the movement of the screen door 30. When the roller unit 50 is in a state in which the flange portion 51c and the guide portion 61 are engaged with and guided by the lower rail portion 12b from both sides in the forward direction, the rolling surface 51b can stably roll and travel on the upper surface of the projection 12c.

[0023] The inner frame 52 is disposed at the center side in the left-right direction in the roller unit 50. The inner frame 52 has a protrusion 52a, an engagement groove 52b, an inner frame body 52c, and a protruding wall 52d. The inner frame body 52c and the protruding wall 52d are disposed on the outdoor side of the lower rail portion 12b. The protruding wall 52d protrudes to the left from the inner frame body 52c. The width dimension of the protruding wall 52d in the forward direction is shorter than the width dimension of the inner frame body 52c. The outdoor side surface of the protruding wall 52d is located closer to the indoor side than the outdoor side surface of the inner frame body 52c. The indoor side surface of the protruding wall 52d is located closer to the outdoor side than the indoor side surface of the inner frame body 52c.

[0024] The protrusion 52a is disposed at the lower end of the left end side of the protruding wall 52d. The protrusion 52a protrudes from the protruding wall 52d on both sides in the forward direction. The protrusions 52a are each semicircular columnar when viewed in the forward direction. The torsion coil spring 55 is attached to the outdoor protrusion 52a from the outdoor side. The engagement groove 52b is a groove recessed from the outdoor side to the indoor side of the protruding wall 52d. The engagement groove 52b extends linearly from the right end of the protruding wall 52d in the upper right direction. One spring piece 55a of the torsion coil spring 55 is inserted into the engagement groove 52b from the outdoor side. The other spring piece 55b of the torsion coil spring 55 is located to the left of the protruding wall 52d and extends linearly in the upper left direction.

[0025] The middle frame 53 is fixed to the lower frame 12 via the outer frame 54. The middle frame 53 is disposed on the left side of the inner frame body 52c. The middle frame 53 is disposed on the outdoor side of the lower rail portion 12b. The middle frame 53 has a pair of retaining walls 53a, a connecting wall 53b, and a connecting wall 53c. The pair of retaining walls 53a face each other with a gap in the projection direction. The protruding wall 52d is inserted from the right side into the gap between the pair of retaining walls 53a. The pair of retaining walls 53a retain the protruding wall 52d from the outside in the projection direction. The pair of retaining walls 53a each have an engagement portion 53d and a fitting hole 53e. The engagement portion 53d is provided at the upper end of the retaining wall 53a and is a surface facing the right side. The fitting hole 53e penetrates the pair of retaining walls 53a coaxially in the projection direction. The fitting hole 53e is a circular through hole when viewed in the projection direction. When the protruding wall 52d is inserted into the gap between the pair of holding walls 53a, the protrusion 52a of the inner frame 52 is inserted from inside into the fitting hole 53e and rotatably fitted therein.

[0026] The middle frame 53, with the projection 52a inserted into the fitting hole 53e, can rotate about the projection 52a relative to the protruding wall 52d. The inner frame 52 is connected to the middle frame 53 so as to be relatively movable about the projection 52a.

[0027] The connecting wall 53b connects the pair of retaining walls 53a at their right ends on the upper side. The connecting wall 53c connects the pair of retaining walls 53a at their left ends. The other spring piece 55b of the torsion coil spring 55 engages with the connecting wall 53c from the right side. A circumferential biasing force is applied to the protruding wall 52d with which one spring piece 55a engages with respect to the connecting wall 53c with which the other spring piece 55b engages from the right side, in a direction away from the other spring piece 55b with respect to the protruding portion 52a as the center.

[0028] When the roller unit 50 is fixed to the screen door 30, the inner frame 52 is connected to the middle frame 53 so as to be movable relative to the middle frame 53 while being biased downward about the protrusion 52a. A biasing force is applied to the inner frame 52 in a direction in which the roller 51 moves downward about the protrusion 52a and presses against the lower rail portion 12b. The connecting wall 53c has a cylindrical portion 53f extending to the left.

[0029] The connecting wall 53c has a cylindrical portion 53f and a rectangular column portion 53g. The cylindrical portion 53f is cylindrical and extends leftward from an upper position of the connecting wall 53c. An internal thread is formed on the inner peripheral surface of the cylindrical portion 53f. The rectangular column portion 53g is rectangular and extends leftward from a position lower than the cylindrical portion 53f of the connecting wall 53c.

[0030] The outer frame 54 is disposed on the left side of the middle frame 53. The outer frame 54 is disposed on the outdoor side of the lower rail portion 12b. The outer frame 54 has a vertical wall 54a, an engagement wall 54b, and a shielding portion 54c.

[0031] The vertical wall 54a is disposed on the left side of the outer frame 54. The vertical wall 54a has a rectangular column shape extending in the up-down direction. The vertical wall 54a has a through hole 54d, a through hole 54e, and a through hole 54g.

[0032] The through-hole 54d is located on the upper side of the vertical wall 54a. The through-hole 54d penetrates the vertical wall 54a in the left-right direction. As shown in Fig. 3, an attachment screw 56 is inserted into the through-hole 54d from the left side. The door roller unit 50 is fixed to the bottom frame 12 by the attachment screw 56 inserted into the through-hole 54d.

[0033] The cylindrical portion 53f of the middle frame 53 is inserted into the through hole 54e from the right side. The adjustment screw 57 is screwed into the cylindrical portion 53f inserted into the through hole 54e from the left side. The adjustment screw 57 screwed into the cylindrical portion 53f from the left side can protrude to the right side from the connecting wall 53c of the middle frame 53. The tip of the adjustment screw 57 protruding to the right side from the connecting wall 53c is located above the protrusion 52a in the protruding wall 52d and abuts against the side surface facing the left side. The protruding wall 52d rotates around the protrusion 52a depending on the protrusion amount of the adjustment screw 57. The inner frame 52 rotates via the protruding wall 52d, causing the door roller 51 to rotate around the protrusion 52a.

[0034] As the roller 51 rotates around the protrusion 52a, the height of the screen door bottom frame 32 changes at the left-right position where the roller 51 is supported by the lower rail portion 12b. For example, when the roller 51 rotates in a direction including a component facing downward, the screen door bottom frame 32 rises at the left-right position where the roller 51 is supported by the lower rail portion 12b. For example, when the roller 51 rotates in a direction including a component facing upward, the screen door bottom frame 32 descends at the left-right position where the roller 51 is supported by the lower rail portion 12b. By adjusting the amount of screwing in of the adjustment screw 57, it is possible to adjust the height of the screen door bottom frame 32 at the left-right position of the roller 51.

[0035] The through hole 54g has a rectangular shape when viewed in the left-right direction. The rectangular column portion 53g of the inner frame 53 is inserted into the through hole 54g from the right side.

[0036] The engagement wall 54b extends to the right from the vertical wall 54a. The engagement wall 54b has a claw portion 54f at a tip thereof. The claw portion 54f engages with the engagement portion 53d of the inner frame 53 from the right side. By the claw portion 54f engaging with the engagement portion 53d from the right side, the inner frame 53 and the outer frame 54 are integrated in the left-right direction.

[0037] The shielding portion 54c is disposed at a position further outdoors than the lower rail portion 12b. The shielding portion 54c has a guide portion 61. As shown in FIG. 6, the guide portion 61 is a surface that faces the lower rail portion 12b on the outdoors side in the projection direction. The guide portion 61 is located on the indoor-most side of the shielding portion 54c. The guide portion 61 extends in the left-right direction. The guide portion 61 engages with the lower rail portion 12b from the outdoors side to guide the movement of the screen door 30.

[0038] The guide portion 61 can engage with the lower rail portion 12b from the outdoor side when the roller 51 rolls on the upper surface of the projection 12c at the rolling surface 51b. In the roller unit 50, when the flange portion 51c and the guide portion 61 are engaged with and guided by the lower rail portion 12b from both sides in the projection direction, the rolling surface 51b can stably roll on the upper surface of the projection 12c.

[0039] The cleaning unit 70 is provided in the inner frame 52 of the frame portion 50A. The cleaning unit 70 is disposed at a position overlapping with the lower rail portion 12b in the projection direction. As shown in FIG. 7, the cleaning unit 70 has a holding portion 71 and a cleaning unit main body 72. The holding portion 71 is inserted into and held in a recess 52e formed in the inner frame 52. The holding portion 71 is detachably held in the recess 52e. The holding portion 71 is detachably held in the recess 52e, so that the cleaning unit 70 can be easily replaced. The recess 52e is formed by being recessed upward from the lower surface of the inner frame 52.

[0040] The cleaning unit body 72 protrudes downward from the holding portion 71. The cleaning unit body 72 contacts the surface of the lower rail portion 12b. By contacting the surface of the lower rail portion 12b, the cleaning unit body 72 can clean the surface of the lower rail portion 12b when the screen door 30 moves in the left-right direction.

[0041] By providing the cleaning unit 70 to the inner frame 52 in which the rollers 51 are provided, when the roller unit 50 is fixed to the screen door 30, a biasing force is applied to the cleaning unit main body 72 in a direction pressing it against the lower rail portion 12b. By applying a biasing force to the cleaning unit main body 72 in a direction pressing it against the lower rail portion 12b, the cleaning unit main body 72 can come into contact with a strong force and clean the lower rail portion 12b.

[0042] The cleaning unit main body 72 comes into contact with at least the protrusion 12c that constitutes the upper surface of the lower rail portion 12b. By the cleaning unit main body 72 coming into contact with the protrusion 12c, the cleaning unit main body 72 can clean the protrusion 12c when the screen door 30 moves in the left-right direction. The cleaning unit main body 72 comes into contact with both side surfaces of the lower rail portion 12b in the forward direction. By the cleaning unit main body 72 coming into contact with both side surfaces of the lower rail portion 12b in the forward direction, the cleaning unit main body 72 can clean both side surfaces of the lower rail portion 12b in the forward direction when the screen door 30 moves in the left-right direction.

[0043] There are no particular limitations on the material of the cleaning body 72 as long as it can perform a cleaning function by contacting the surface of the lower rail portion 12b. As an example, the cleaning body 72 is a brush 72A having a plurality of bristles extending in the vertical direction.

[0044] As shown in Fig. 8, the cleaning unit main body 72 has a recess 72B. The recess 72B penetrates the cleaning unit main body 72 in a direction perpendicular to the up-down direction. In this embodiment, the recess 72B penetrates the cleaning unit main body 72 in the left-right direction. The recess 72B opens at the lower end of the cleaning unit main body 72. The recess 72B is formed in a curved shape whose width in the front direction narrows from the lower end of the cleaning unit main body 72 toward the upper side.

[0045] If the recess 72B is not provided, when the roller unit 50 moves downward when the height of the bottom frame 32 for the screen door is adjusted, the lower end of the cleaning unit main body 72 may ride up onto the lower rail portion 12b and bend in the projection direction, resulting in the cleaning unit main body 72 escaping from the lower rail portion 12b. If the cleaning unit main body 72 escapes from the lower rail portion 12b, the cleaning unit main body 72 may not come into contact with both side surfaces in the projection direction of the lower rail portion 12b. By having the recess 72B in the cleaning unit main body 72, even if the roller unit 50 moves downward, the lower rail portion 12b is inserted into the recess 72B, so that the cleaning unit main body 72 can come into contact with and clean both side surfaces in the projection direction of the lower rail portion 12b.

[0046] For example, when lower rail portion 12b is made of a metal such as aluminum, lower rail portion 12b is thin, but when lower rail portion 12b is made of resin, it is about twice as thick as a metal lower rail portion. By providing cleaning unit main body 72 with recess 72B, even if lower rail portion 12b is made of resin and is thick, lower rail portion 12b can be inserted into recess 72B, making it possible to clean the surface of lower rail portion 12b.

[0047] Since the lower rail portion 12b is inserted into the recess 72B, it is preferable that the recess 72B penetrates the cleaning unit main body 72 in the left-right direction. In order to determine the direction in which the recess 72B penetrates the cleaning unit main body 72, it is preferable that the holding portion 71 is positioned in the rotational direction when attached to the recess 52e. The positioning of the holding portion 71 and the recess 52e can be selected from configurations such as making the cross section triangular or rectangular, or making the cross section a D-cut with part of a circle formed by a straight line.

[0048] 9, the cleaning unit main body 72 has a hollow portion 72C. The hollow portion 72C extends in the vertical direction from a position where it overlaps with the lower rail portion 12b in the projection direction. The hollow portion 72C is open at its lower end.

[0049] By providing the hollow portion 72C in the cleaning unit body 72, fine foreign matter such as dust, pollen, etc. caught between the brushes 72A can easily fall to the lower side or to the outside. By providing the hollow portion 72C in the cleaning unit body 72, fine foreign matter such as dust, pollen, etc. that the cleaning unit body 72 comes into contact with but is unable to sweep out and remains stuck between the bristles 72D can escape into the hollow portion 72C and be temporarily stored there.

[0050] The bristles 72D of the brush 72A arranged around the hollow portion 72C are arranged in a uniform amount in the radial direction around the entire circumference, and the bristles have a small diameter to ensure gaps. Since the amount of bristles 72D arranged in the radial direction is uniform and the bristles have a small diameter to ensure gaps, when the cleaning unit main body 72 comes into contact with the surface of the lower rail portion 12b to clean, fine foreign matter such as dust and pollen is easily discharged and is less likely to accumulate.

[0051] The cleaning body 72 may have a hollow portion 72C or may have a structure in which the length of the bristles 72D is irregular, the thickness of the bristles 72D is varied, or the density of the bristles 72D is adjusted, thereby maintaining the ability to sweep out fine foreign matter.

[0052] In the embodiment of the fixture 1, the cleaning part 70 is positioned at a position overlapping with the lower rail part 12b in the forward direction and contacts the surface of the lower rail part 12B, so that when the screen door 30 moves in the left-right direction, the cleaning part main body 72 can clean the surface of the lower rail part 12b, thereby maintaining the smooth running and sliding properties of the rollers 51 on the screen door 30.

[0053] The cleaning unit 70 in the fitting 1 of the embodiment is preferably disposed outside in the left-right direction from the door rollers 51. By disposing the cleaning unit 70 outside in the left-right direction from the door rollers 51, it is possible to clean up to the vicinity of both ends in the left-right direction of the lower rail portion 12b.

[0054] Although the preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to the examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0055] For example, in the embodiment of the fitting 1, a configuration in which one cleaning unit 70 is arranged on one roller unit 50 has been exemplified, but the present invention is not limited to this configuration. A configuration in which multiple cleaning units 70 are arranged on one roller unit 50 may also be used. By arranging multiple cleaning units 70 on one roller unit 50, the cleaning ability of the lower rail portion 12b can be improved.

[0056] In the embodiment of the fitting 1, the cleaning unit 70 has a brush 72A, but is not limited to this configuration. The cleaning unit 70 may be configured to arrange a spatula, a cloth-like material such as felt, a thin plate of soft resin, or the like, in addition to the brush 72A, at the position of the lower rail portion 12b in the projection direction.

[0057] In the embodiment of the fitting 1, the roller 51 has a flange 51c extending radially outward from the indoor end of the rolling surface 51b, but is not limited to this configuration. The flange 51c may extend radially outward from each of the indoor and outdoor ends of the rolling surface 51b.

[0058] In the fitting 1 of the embodiment, a configuration in which a sliding door is used as the screen door 30 has been exemplified, but the present disclosure is not limited to this configuration. For example, the present disclosure can be applied to a fitting 1 that is not provided with a screen door 30. For example, the present disclosure may be applied to a door roller unit including the door rollers 25 for the outdoor and indoor doors 20 of the door 20 described in the embodiment. [Explanation of symbols]

[0059] 1...door fitting, 10...opening frame, 11...upper frame, 11b...upper rail portion, 12...lower frame, 12b...lower rail portion, 13...vertical frame, 30...screen door, 31a...upper insertion groove, 50...door roller unit, 50A...frame portion, 51...door roller, 51c...flange portion, 51d...engagement surface, 52...inner frame, 53...middle frame, 54c...shielding portion, 61...guide portion, 70...cleaning portion, 71...holding portion, 72...cleaning portion main body, 72A...brush, 72B...recess, 72C...hollow portion, 72D...hair

Claims

1. An opening frame formed by framing an upper frame, a lower frame, and a pair of left and right vertical frames on all four sides; A sliding door movably provided in the opening frame; Equipped with The lower frame has a lower rail portion that guides the movement of the sliding door, The sliding door has a roller unit including a roller that runs along the lower rail portion, The door roller unit includes: A fitting having a cleaning part that is arranged in a position overlapping with the lower rail part in the projection direction and contacts the surface of the lower rail part.

2. The cleaning portion contacts at least the upper surface of the lower rail portion. The fixture according to claim 1.

3. The cleaning portion contacts both side surfaces of the lower rail portion in the projection direction. The fitting according to claim 2.

4. The cleaning part has a recess that penetrates the cleaning part in a direction perpendicular to the up-down direction and has an open lower end. A fitting according to any one of claims 1 to 3.

5. The door roller unit has a frame portion that rotatably supports the door roller, The cleaning unit includes: A holding portion held by the frame portion; A cleaning unit main body protruding downward from the holding unit; having The cleaning unit body has a hollow portion that extends in the vertical direction from a position where it overlaps with the lower rail portion in the projection direction and has an open lower end. A fitting according to any one of claims 1 to 3.

6. The holding portion is detachable from the frame portion. The fitting according to claim 5.

7. The cleaning unit is arranged in a plurality of units on the frame. The fitting according to claim 5.

8. The frame portion is A first frame portion fixed to the lower frame; A second frame portion connected to the first frame portion so as to be relatively movable; having The door roller and the cleaning unit are provided on the second frame unit, The fitting according to claim 5.

9. The second frame portion is connected to the first frame portion so as to be relatively movable in a state where the second frame portion is biased downward with respect to the first frame portion. The fitting according to claim 8.

10. The cleaning unit has a brush having a plurality of bristles extending in the vertical direction. A fitting according to any one of claims 1 to 3.

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