JP7324660B2 - Folding door device - Google Patents

Description

The present disclosure relates to folding door devices.

Conventionally, a folding door is suspended from a hanging rail inset in an opening by a hanging wheel, and when the opening is opened by folding the folding door, the folded panel protrudes only to either the indoor side or the outdoor side. A folding door device having a folding door configured as follows is known (see, for example, Patent Document 1).

A folding door consists of three panels, a handle-side panel, an intermediate panel, and a rotating shaft-side panel, and one hanging wheel that runs in the suspension rail is arranged across the rotating shaft of the handle-side panel and the rotating shaft of the intermediate panel. In addition, the suspension-side rotating shafts projecting respectively to the upper and lower portions of the rotating shaft-side panel are respectively supported by a receiving portion arranged inside the suspension rail and a receiving portion provided on the floor surface. .

Japanese Patent Application Laid-Open No. 2006-161300

As a method of removing the sliding door etc. provided in the opening by renovation and installing a new door body, a guide rail is attached to the wall surface above the opening, and one of the two rooms placed across the opening is installed. There is a method of outsetting the door so as to close the opening from the room side.

This method poses no problem when the door body is a sliding door. However, when the door body is a folding door configured to fold while rotating a plurality of door bodies, a space is required for the door body to rotate, so the folding door is outset to the opening. is difficult. Patent Literature 1 discloses a folding door configured so as not to protrude toward one room when folded. However, if the vertical frame member forming the opening is provided so as to protrude from the wall surface toward the room, the folding door and the vertical frame member may interfere with each other when the folding door is opened and closed.

An object of the present disclosure is to provide a folding door device that does not interfere with a vertical frame member even when the folding door is set out so as to block an opening from one room side.

The folding door device of the present disclosure rotatably connects a plurality of door bodies including at least a door front door body and a door rear door body to a guide rail outset on a wall surface at an upper part of an opening, and the door A folding door configured to fold a front door body toward the door trailing door body and suspended from the guide rail.

It is the front view which looked at the folding door apparatus from one direction. FIG. 2 is a vertical cross-sectional view taken along line AA in FIG. 1; Fig. 2 is a cross-sectional view of the folding door device showing the folding door in plan view; It is a perspective view of a folding door apparatus which shows a folding door and a guide rail with a two-dot chain line. It is a longitudinal cross-sectional view which shows the attachment structure of a guide rail. It is a perspective view of a guide rail main body. It is the explanatory view which planarly viewed the folding door in the middle of opening operation. It is explanatory drawing which planarly viewed the folding door which opening operation complete|finished. It is the explanatory view which carried out plane view of the folding door which opening operation concerning other embodiments ended. It is a figure explaining the rotation track|orbit by the hanging base side of a folding door. FIG. 5 is a longitudinal sectional view showing another embodiment of the mounting structure of the guide rail;

As shown in FIGS. 1, 2, 3 and 4, the wall portion 100 of the building frame is composed of an upper frame member 101 and left and right vertical frame members 102 and 103 extending upward from the floor surface FL. An opening 104 is provided inside the existing three-sided frame. The wall portion 100 is a wall portion that partitions two rooms R1 and R2 in the building, and an opening 104 allows the rooms R1 and R2 to communicate with each other. The upper frame member 101 and the left and right vertical frame members 102 and 103 are formed wider than the wall thickness of the wall portion 100, and slightly protrude toward the chambers R1 and R2, respectively.

The folding door device 1 has a folding door 2 and a guide rail 3 that slidably suspends the folding door 2, and blocks the opening 104 from one of the two chambers R1 and R2. outset. Since this folding door device 1 can be easily retrofitted to the opening 104, it can be suitably used when remodeling the room.

The left side of the folding door 2 in FIG. 3 is the door tip side, and the right side is the door trailing side. It has a high height dimension. The door tip side of the folding door 2 is arranged slightly inside the vertical frame member 102 . Specifically, as shown in FIG. 3, the door tip side of the folding door 2 is arranged in the chamber R1, which is the outside of the opening 104 in the viewing direction of the opening 104, and is positioned in the width direction of the opening 104. placed inside. Therefore, the door tip side of the folding door 2 is not in contact with the vertical frame member 102 . When the folding door 2 is viewed from either the room R1 or the room R2, the door tip side of the folding door 2 and the vertical frame member 102 do not overlap. It should be noted that the prospective direction of the opening 104 is the direction across the chambers R1 and R2 with the opening 104 as a boundary.

The door tail side of the folding door 2 is arranged slightly outside the vertical frame member 103 and covers the vertical frame member 103. - 特許庁More specifically, as shown in FIG. 3, the door tail side of the folding door 2 is arranged in a chamber R1 outside the opening 104 in the viewing direction of the opening 104, and in the width direction of the opening 104. placed outside. Therefore, the door bottom side of the folding door 2 is not in contact with the vertical frame member 103 either. However, when the folding door 2 is observed from the room R1, the door bottom side of the folding door 2 overlaps with the vertical frame member 103, and the vertical frame member 103 is hidden.

Inside the vertical frame member 102 arranged on the door tip side of the folding door 2, a new door tip side vertical frame member 105 made of a plate material having substantially the same thickness as the vertical frame member 102 protrudes further toward the room R1. installed as shown. The newly installed vertical frame member 105 extends upward from the floor surface FL and is arranged to face the end surface of the outset folding door 2 on the door tip side. The vertical length of the new vertical frame member 105 is slightly longer than the vertical length of the vertical frame member 102 . Therefore, as shown in FIG. 2, the newly installed vertical frame member 105 has an L-shaped notch 105a for receiving the end of the upper frame member 101 at the upper end of the portion overlapping the vertical frame member 102. .

A doorstop 106 is attached to the newly installed vertical frame member 105 . The door stop 106 is arranged in a groove portion 105b provided along the length direction of the new vertical frame member 105. As shown in FIG. The door stop 106 is arranged so as to contact the door tip from the room R2 side when the folding door 2 is closed. The new vertical frame member 105 may be provided with a latch, lock, or the like for holding the folding door 2 in a closed state instead of or in addition to the door stop 106 .

As shown in FIGS. 3 and 4, on the wall surface 100a of the wall portion 100 facing the room R1 side, the folding door 2 is provided outside the vertical frame member 103 near the end 22a of the folding door 2 on the door bottom side. A spacer material 107 is attached over the entire length in the height direction. The spacer member 107 is a newly installed vertical frame member attached to the wall surface 100a on the side opposite to the opening 104 with the vertical frame member 103 interposed therebetween. The spacer material 107 hides the gap G formed between the end of the folding door 2 on the side of the door trailing edge, the vertical frame material 103, and the wall surface 100a.

As shown in FIGS. 1 and 3, the folding door 2 includes a door end door body 21 arranged closest to the door end side, a door end door body 22 arranged closest to the door bottom side, a door end door body 21 and and an intermediate door body 23 arranged between door tail door bodies 22, and an opening is made by folding the door end door body 21 and the intermediate door body 23 toward the door tail door body 22. It is configured to open the portion 104 . The intermediate door body 23 and the door trailing door body 22 have substantially the same width, and the door leading door body 21 has a width substantially double that of the door trailing door body 22 and the intermediate door body 23 .

The front door body 21 and the intermediate door body 23 are connected by hinge portions 24a respectively arranged at the upper and lower ends, and the intermediate door body 23 and the rear door body 22 are connected by hinges arranged at the upper and lower ends respectively. It is connected by the part 24b. The hinge portions 24a and 24b have a gear structure in which gears are meshed. In the folding door 2 with the opening 104 closed, the hinge portion 24a is provided at a position slightly protruding toward the room R1 from between the front door member 21 and the intermediate door member 23, and the hinge portion 24b is located at the intermediate position. It is provided at a position slightly projecting from between the door body 23 and the door tail door body 22 toward the chamber R2.

The door head door 21 has, at its upper end, a suspension wheel 25 that is movably accommodated in the guide rail 3 described later. The hanging wheel 25 has four rollers 252 on both sides of the main body 251 and is rotatably attached to a first rotating shaft 253 projecting upward from the front door body 21 . The first rotating shaft 253 is arranged at the end of the door end door 21 on the side of the intermediate door 23, which is the side of the door trailing edge, and is used to rotate the door end door 21 that moves along the guide rail 3 during the opening/closing operation. Construct the drive shaft. Handles 211 for opening and closing operations are attached to both surfaces of the door end door body 21 on the door end side.

The door trailing door 22 has, at its upper end, a suspension wheel 27 that is movably accommodated in the guide rail 3, which will be described later. The hanging wheel 27 may have the same structure as the hanging wheel 25 of the door end door 21 . The suspension wheel 27, which has the same structure as the suspension wheel 25, has four rollers 272 on both sides of the body part 271, and is rotatably attached to a second rotating shaft 273 projecting upward from the door tail door body 22. . The second rotating shaft 273 is arranged at the end portion of the door trailing door body 22 opposite to the intermediate door body 23 side, and constitutes the upper fixed rotating shaft of the door trailing door body 22 .

As shown in FIG. 1, the door tail door 22 has, at its lower end, a shaft portion 28 that protrudes toward the floor surface FL of the building skeleton. The shaft portion 28 is arranged coaxially with the second rotation shaft 273 of the suspension wheel 27 and is rotatably supported by a bearing 281 fixed to the floor FL. This shaft portion 28 constitutes a fixed rotation shaft at the bottom of the door trailing door body 22 .

The intermediate door member 23 has a guide disk 26 at its upper end that is slidably fitted into a groove 311d of the guide rail 3, which will be described later. The guide disk 26 is coaxially attached to a third rotating shaft 261 that protrudes upward from the upper surface of the end of the intermediate door 23 on the side of the front door 21 . The third rotating shaft 261 constitutes a movable rotating shaft of the intermediate door body 23 that moves along the guide rail 3 during the opening/closing operation.

The guide rail 3 is attached parallel to the upper frame member 101 on the wall surface 100 a facing the chamber R<b>1 side in the upper portion of the opening 104 . On the wall surface 100a, a base member 4 having a rectangular cross section and having the same length as the guide rail 3 is fixed by a screw SC1 driven from the side surface 4a facing the chamber R1 side, and protrudes toward the chamber R1. .

The base material 4 is an example of a separation distance adjusting member. The guide rail 3 is attached to the wall surface 100a via the base material 4, so that it is separated from the wall surface 100a and protrudes greatly toward the chamber R1. The separation distance of the guide rail 3 from the wall surface 100a is defined by the size of the base material 4, specifically, the height of the base material 4 protruding from the wall surface 100a. By appropriately selecting the protrusion height of the base material 4, the separation distance of the guide rail 3 from the wall surface 100a can be adjusted to a desired distance.

Since the guide rail 3 is separated from the wall surface 100a by the base material 4, the folding door 2 suspended by the guide rail 3 is also separated from the wall surface 100a. As shown in FIG. 3, the projection height of the backing material 4 from the wall surface 100a in the present disclosure is determined by the room R1 side end portion 103a of the existing vertical frame member 103 arranged at the end portion of the door bottom side of the folding door 2. and the folding door 2 to form a gap G for avoiding mutual interference. By forming this gap G, the folding door 2 is separated from the wall surface 100a and has a gap between itself and the wall surface 100a.

The guide rail 3 includes a guide rail body 31 extruded from a metal such as aluminum, a resin cover 32 covering the outside of the guide rail body 31, and resin caps 33 attached to both ends of the guide rail 3 in the length direction. , 33 and . The guide rail main body 31 and the resin cover 32 extend longer than the length of the upper frame member 101 and define the entire length of the guide rail 3 corresponding to the width of the folding door 2 .

As shown in FIGS. 5 and 6, the guide rail main body 31 includes a running portion 311 that accommodates the hangers 25 and 27 of the folding door 2, and a first fixed piece 312 that is arranged closer to the wall surface 100a than the running portion 311. , and a second fixed piece 313 extending from the lower end of the first fixed piece 312 toward the wall surface 100a. In FIG. 4, illustration of the resin cap 33 of the guide rail 3, the vertical frame member 102, and the new vertical frame member 105 is omitted.

The running portion 311 includes an upper wall portion 311a extending in the longitudinal direction of the guide rail 3, and a pair of parallel side wall portions 311b hanging down from the chamber R1 side edge and the chamber R2 side edge of the upper wall portion 311a. , 311b, and a pair of rail portions 311c, 311c extending from the lower edges of the side wall portions 311b, 311b in the direction of approaching each other, forming a storage space for the hanging wheels 25, 27 inside. The rail portions 311c, 311c are separated from each other, and a groove portion 311d is formed between the rail portions 311c, 311c. The running portion 311 is arranged on the lower side of the guide rail 3 so that the lower surface 311 e is substantially flush with the upper surface 101 a of the upper frame member 101 .

A side wall portion 311b arranged on the chamber R1 side of the running portion 311 is integrally provided with an upper projecting piece 314 and a lower projecting piece 315 projecting substantially horizontally toward the chamber R1 side. The upper protruding piece 314 and the lower protruding piece 315 are portions to be attached to the resin cover 32, which will be described later, and protrude in parallel from the traveling portion 311 toward the chamber R1 side with substantially the same amount of protrusion. The tip of the lower protruding piece 315 has a rising portion 315a that is bent upward at a right angle.

The first fixing piece 312 is a fixing portion for fixing the guide rail main body 31 to the base material 4 and is arranged parallel to the side surface 4 a of the base material 4 . The width of the first fixed piece 312 along the vertical direction of the guide rail 3 is formed to be substantially the same width as the side surface 4 a of the base material 4 . The first fixing piece 312 is spaced apart from the running portion 311 on the base material 4 side and the wall surface 100a side, and extends from a position at the same height as the lower surface 311 e of the running portion 311 to approximately the height of the running portion 311 . It extends in the vertical direction along the side surface 4a of the base material 4 to a double height position.

The first fixed piece 312 and the running portion 311 are integrally connected by an upper connecting plate 316 and a lower connecting plate 317 . The upper connecting plate 316 is a connecting portion between the side wall portion 311b and the upper wall portion 311a arranged on the chamber R2 side of the running portion 311 from a portion slightly above the central portion of the first fixing piece 312 in the vertical direction. It is provided so as to incline downward. The lower connecting plate 317 substantially horizontally connects the lower end portion of the side wall portion 311b arranged on the chamber R2 side of the running portion 311 and the lower end portion of the first fixed piece 312 .

An upper end piece 318 is provided at the upper end of the first fixing piece 312 and extends perpendicularly to the first fixing piece 312 and parallel to the upper surface 4 b of the base material 4 . The upper end piece 318 includes a first piece portion 318a extending from the upper end portion of the first fixed piece 312 toward the chamber R2 side and a second piece portion extending from the upper end portion of the first fixed piece 312 toward the chamber R1 side. 318b. The first piece portion 318 a abuts on the upper surface 4 b of the base material 4 . The second piece portion 318b constitutes an attachment portion for the resin cover 32, which will be described later.

The second fixing piece 313 is another fixing portion for fixing the guide rail main body 31 to the base material 4, and extends from the lower end of the first fixing piece 312 in the direction opposite to the running portion 311. It extends substantially horizontally toward a certain room R2. The second fixed piece 313 is arranged perpendicular to the first fixed piece 312 and parallel to the lower surface 4 c of the base material 4 . The width of the second fixing piece 313 along the direction of projection is substantially the same as the width of the lower surface 4c of the base material 4 along the direction of projection. The prospective direction is the direction across the chambers R1 and R2 with the opening 104 interposed therebetween, and is the left-right direction in FIG. Since the second fixing piece 313 covers the entire lower surface 4c of the base material 4 to hide it, the design of the guide rail 3 as viewed from the lower surface side is also improved.

The guide rail main body 31 has the first fixing piece 312 in contact with the side surface 4a of the backing material 4, and the first fixing piece 318a of the upper end piece 318 and the second fixing piece 313 to move the backing material 4 from above and below. It is attached to the base material 4 so as to sandwich it. A gap 108 corresponding to the thickness of the second fixing piece 313 is formed between the portion of the upper surface 101 a of the upper frame member 101 that protrudes toward the chamber R 1 side and the lower surface 4 c of the base member 4 . The second fixed piece 313 is inserted into this gap 108 .

After the guide rail main body 31 is attached to the base material 4, the first fixed piece 312 and the second fixed piece 313 are fixed by screws SC2 and SC3, which are fixing members. The screw SC2 is driven in a direction perpendicular to the wall surface 100a into the fixed piece upper portion 312a, which is arranged above the connecting portion of the first fixed piece 312 with the upper connecting plate 316. As shown in FIG. Thereby, the first fixing piece 312 is fixed to the side surface 4 a of the base material 4 . The screw SC3 is driven into the second fixing piece 313 from below. Thereby, the second fixing piece 313 is fixed to the lower surface 4 c of the base material 4 . A plurality of screws SC<b>2 and SC<b>3 are provided at intervals in the length direction of the guide rail main body 31 .

In this manner, the guide rail body 31 is fixed to the base material 4 at the upper and lower portions of the guide rail body 31 by screws SC2 and SC3 driven in directions substantially perpendicular to each other. As a result, the guide rail main body 31 is attached to the wall surface 100a at a distance corresponding to the protrusion height of the base material 4 from the wall surface 100a. Since the guide rail main body 31 is firmly fixed by the first fixing piece 312 and the second fixing piece 313 which are perpendicular to each other, the load resistance is improved. There is no risk of deformation due to the load of the folding door 2 . Since the guide rail main body 31 including the first fixed piece 312 and the second fixed piece 313 is integrally formed by extrusion, the first fixed piece 312 and the second fixed piece 313 are screwed SC2 and SC3, respectively. The guide rail main body 31 integrally having the running portion 311 can be fixed simply by hitting the .

In the guide rail main body 31, the second fixed piece 313 and the lower connecting plate 317 are continuous in a flush manner without forming a gap or a groove portion therebetween. Therefore, when the guide rail body 31 is viewed from below, the rail portion 311c, the lower connecting plate 317, and the second fixing piece 313 form a flat surface that continues flush along the projection direction. Since the lower portion of the running portion 311 and the first fixing piece 312 and the second fixing piece 313 are integrated substantially horizontally by the lower connecting plate 317, the supporting structure of the running portion 311 in the guide rail 3 is strengthened. , the load resistance of the guide rail 3 is further improved.

As shown in FIG. 5, the resin cover 32 integrates a front cover portion 321 that covers the front side of the guide rail body 31 facing the chamber R1 and a top cover portion 322 that covers the top side of the guide rail body 31. It is formed in an L shape that has a

The front cover portion 321 is arranged parallel to the first fixing piece 312 of the guide rail body 31 and completely covers the front side of the guide rail body 31 . On the inner surface 321a of the front cover portion 321, a pair of clamping pieces 324 for clamping the upper projecting piece 314 from the chamber R1 side corresponding to the position of the upper projecting piece 314 of the guide rail body 31, and the guide rail body 31 A supporting piece 325 for supporting the lower surface side of the lower projecting piece 315 from the chamber R1 side is protruded corresponding to the position of the lower projecting piece 315.

The top cover portion 322 is arranged parallel to the second fixed piece 313 of the guide rail body 31 . The upper surface cover portion 322 extends from the upper end of the front surface cover portion 321 toward the wall surface 100a and covers almost the entire upper surface 4b of the base material 4 from the guide rail main body 31. As shown in FIG. An inner surface 322a of the top cover portion 322 is provided with a clamping piece 323 that clamps the first piece 318a of the upper end piece 318 of the guide rail main body 31 from the chamber R1 side. The clamping piece 323 is arranged parallel to the top cover portion 322 and extends toward the chamber R2.

The resin cover 32 is detachably attached to the guide rail main body 31 fixed to the backing material 4 from the chamber R1 side. Specifically, the clamping pieces 324 of the front cover portion 321 clamp the upper protruding pieces 314 of the guide rail main body 31 from above and below, and the support pieces 325 of the front cover portion 321 protrude from the lower portion of the guide rail main body 31. It supports the bottom side of piece 315 . The sandwiching piece 324 and the support piece 325 sandwich the upper projecting piece 314 and the lower projecting piece 315 of the guide rail body 31 . The rising portion 315a of the lower protruding piece 315 of the guide rail body 31 contacts the inner surface 321a of the front cover portion 321 and supports the front cover portion 321 stably. Furthermore, the clamping piece 323 of the upper surface cover portion 322 clamps the second piece portion 318b of the upper end piece 318 of the guide rail main body 31 .

The resin caps 33 , 33 are formed in a rectangular shape corresponding to the shapes of both end surfaces of the guide rail main body 31 and the resin cover 32 . As shown in FIGS. 1, 2 and 3, the resin caps 33, 33 are detachably attached so as to cover both end faces of the guide rail body 31 including the base material 4 and the resin cover 32. As shown in FIG.

When attaching the folding door 2 to the guide rail 3 set out on the wall surface 100a in this manner, the hanging wheel of the folding door 2 is attached to the running portion 311 of the guide rail main body 31 before at least one of the resin caps 33 is attached. 25 and 27 are inserted while being slid, and the guide disk 26 is fitted into the groove 311d between the rails 311c and 311c of the traveling portion 311. As shown in FIG. Since the folding door 2 is suspended by the two hanging wheels 25 and 27, the folding door 2 can be moved along the length direction of the traveling portion 311, and the position of the folding door 2 can be easily adjusted. . After the position adjustment of the folding door 2 is completed, the hanger wheel 27 on the trailing side of the door is fixed using a fixture (not shown) or the like so that it cannot move in the traveling portion 311, and the shaft at the lower end on the trailing side of the door is fixed. The portion 28 is engaged with a bearing 281 on the floor FL.

As shown in FIG. 3, the folding door 2 attached to the guide rail 3 has an opening 104 formed by extending the front door 21, the intermediate door 23, and the trailing door 22 of the folding door 2 in series. to close. The front door body 21 is arranged so as to face the projected surface of the new vertical frame member 105, and the door tail door body 22 is arranged so as to cover the existing vertical frame member 103 from the room R1 side. Since the guide rail 3 protrudes from the wall surface 100a toward the chamber R1 through the base material 4, the folding door 2 closing the opening 104 is arranged apart from the wall surface 100a. Therefore, the interference between the vertical frame members 102 and 103 provided so as to protrude toward the chamber R1 and the folding door 2 can be easily avoided. By attaching the guide rail 3 using the base material 4, the degree of separation of the folding door 2 from the wall surface 100a, that is, the degree of avoidance of interference with the vertical frame members 102 and 103 can be easily adjusted. A newly installed vertical frame member 105 closes the gap between the door end door 21 of the folding door 2 and the vertical frame member 102 caused by separating the guide rail 3 from the wall surface 100a. A gap between the door tail door 22 of the folding door 2 and the wall surface 100a is closed by a spacer member 107. - 特許庁

The opening operation of the folding door 2 is performed as follows. When the handle 211 of the folding door 2 is operated toward the room R1 side, as shown in FIG. rotate to the side. The pivoting motion of the door end door 21 is transmitted to the intermediate door 23 via the hinge portion 24a, and the intermediate door 23 also rotates toward the chamber R1 around the third pivot shaft 261 constituting the movable pivot shaft. to rotate. As a result, the door end door 21 and the intermediate door 23 begin to be folded so as to protrude toward the room R1. Further, the pivoting motion of the intermediate door member 23 is transmitted to the door tail door member 22 via the hinge portion 24b, and the door tail door member 22 is also rotated around the second pivot shaft 273 and the shaft portion 28 toward the chamber R1. to rotate. As a result, the intermediate door member 23 and the door tail door member 22 begin to be folded so as to protrude toward the room R1.

Since the second rotating shaft 273 and the shaft portion 28 of the door trailing door body 22 constitute a fixed rotating shaft, the position of the rotating shaft of the door trailing door body 22 with respect to the guide rail 3 is immovable. Therefore, the door end door body 21 moves toward the door end door body 22 while rotating as the hanging wheel 25 travels toward the door tail side in the running portion 311 . Along with this, the guide disk 26 slides in the groove portion 311d toward the door trailing edge, so that the intermediate door body 23 moves toward the door trailing edge door body 22 while rotating. As a result, as shown in FIG. 7B, the front door member 21, the rear door member 22 and the intermediate door member 23 are folded so as to overlap each other in parallel to open the opening 104. As shown in FIG. At this time, since the first rotating shaft 253 and the third rotating shaft 261, which are the movable rotating shafts of the door-end door body 21 and the intermediate door body 23, are arranged at the ends on the sides adjacent to each other, As shown in FIG. 7B, the folding door 2 with the opening 104 open is folded so as to protrude from the guide rail 3 toward the chamber R1, and does not protrude greatly toward the chamber R2.

Since the folding door 2 with the opening 104 open does not protrude greatly toward the chamber R2, the length of the guide rail 3 with respect to the opening 104, the size of each door member of the folding door 2, the position of the stopper, etc. are appropriately adjusted. 7C, it is possible to prevent the folded folding door 2 from overlapping within the opening width of the opening 104 when the folding door 2 is fully opened. According to this, since the opening 104 can be utilized as effectively as possible when the folding door 2 is fully opened, for example, a wheelchair, a care bed, etc. can be easily moved.

As shown in FIG. 8, when the trailing door body 22 of the folding door 2 opens and closes, the end portion 22a closer to the door trailing side than the second rotating shaft 273 moves in two directions with the second rotating shaft 273 as the center. A rotation track is formed as indicated by the dotted chain line. As indicated by the solid line, this rotation track protrudes toward the wall surface 100a beyond the door trailing door member 22 with the opening 104 closed. However, by mounting the guide rail 3 away from the wall surface 100a via the backing material 4, mutual interference between the door trailing door body 22 and the end portion 103a of the vertical frame member 103 can be avoided. Since the gap G is provided, there is no interference with the vertical frame member 103 or the wall surface 100a on the opposite side of the opening 104 with the vertical frame member 103 interposed therebetween.

The spacer material 107 has a concave portion 107a formed in an end face facing the end portion 22a of the door tail door body 22 so as to avoid the turning track of the end portion 22a of the door tail door body 22. As shown in FIG. This allows the spacer member 107 to be brought as close to the end portion 22a of the door tail door 22 and the vertical frame member 103 as possible. The outer surface 107b of the spacer member 107 is arranged so as to be flush with the end surface 22b of the door trailing door member 22 with the opening 104 closed. Therefore, as shown in FIGS. 1, 3 and 8, when the folding door device 1 is observed from the room R1 side, the spacer material 107 is not visible, and the appearance of the folding door device 1 is further improved. can be done. Furthermore, there is also the effect that a foreign object, a finger, etc., is less likely to be caught between the door tail door member 22 of the folding door 2 and the spacer material 107 .

As shown in FIG. 5, since the guide rail 3 has a substantially horizontal flat surface extending from the lower surface 311e of the running portion 311 to the side surface 101b of the upper frame member 101 facing the chamber R1 side, the folding door 2 and the upper frame member There is nothing protruding downward from the guide rail 3 in the space over the width W between the side surface 101b of the guide rail 101 and the side surface 101b. Therefore, the turning orbits of the front door 21, the rear door 22 and the intermediate door 23 do not interfere with the guide rail 3. As a result, the space between the folding door 2 and the guide rail 3 can be made as close as possible to reduce the gap between them, and the fixed portion of the guide rail 3 becomes difficult to see through the space. The design of the product is also improved.

As shown in FIG. 9, even when the wall surface 100a and the side surface 101b of the upper frame member 101 are flush with each other, the guide rail 3 can be set out through the base member 4. FIG. In this case, the base member 4 may be attached from the wall surface 100 a to the side surface 101 b of the upper frame member 101 .

In the above embodiment, the folding door device 1 configured to outset the folding door 2 to the opening 104 without removing the existing frame forming the opening 104 has been exemplified. However, the folding door device 1 may be partially or entirely removed from the existing frame forming the opening 104 during renovation, and the folding door 2 may be outset, or it may be attached to the opening of a newly built building. .

The folding door 2 used in the folding door device 1 only needs to have at least the front door member 21 and the rear door member 22, and is not limited to the three door members.

1 Folding door device 2 Door body 21 Door end door body 22 Door trailing door body 25, 27 Suspension wheel 3 Guide rail 311 Running part 311e Lower surface (of running part) 312 First fixed piece 313 Second fixed piece 4 Backing material 4a ( Backing material) side surface 4c (backing material) bottom surface 100a Wall surface 104 Opening SC2, SC3 Fixing member

Claims (3)

a guide rail having a guide rail main body having a flat surface that is outset on the wall surface of the upper part of the opening and continues in a flush direction along the projection direction ;
A plurality of door bodies including at least a door end door body and a door tail door body are rotatably connected to each other, and the door end door body is configured to be folded toward the door tail door body, and attached to the guide rail. a folding door suspended from above;
a separation distance adjusting member that adjusts the separation distance of the guide rail from the wall surface between the guide rail and the wall surface,
The folding door device, wherein the separation distance adjusting member is attached so as to be sandwiched from above and below by the guide rail body . a guide rail having a guide rail main body having a flat surface that is outset on the upper wall surface of the opening surrounded by the upper frame member and the left and right vertical frame members and continues in a flush direction along the projection direction ;
A plurality of door bodies including at least a door end door body and a door tail door body are rotatably connected to each other, and the door end door body is configured to be folded toward the door tail door body, and attached to the guide rail. a folding door suspended from above;
a separation distance adjusting member that adjusts the separation distance of the guide rail from the wall surface between the guide rail and the wall surface,
The folding door is arranged so that the vertical frame member arranged on the door tail door body side is covered by the door tail door body in a state where the opening is closed,
A gap is provided between the door tail door body and the vertical frame member arranged on the side of the door tail door body to avoid mutual interference,
The folding door device, wherein the separation distance adjusting member is attached so as to be sandwiched from above and below by the guide rail body . 3. The folding door device according to claim 2, wherein the wall surface near the door trailing edge side of the door trailing door body has a vertical frame member for blinding the gap.

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