JP2018188858A - Folding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding door device capable of avoiding interference between a folded door and its neighboring members in a hanging side of the folded door.SOLUTION: A folding door device 1 includes a door frame 2 having an upper frame 21, a lower frame 22 and vertical frames 23, 24, and a folding door 3 in which a plurality of sliding panels 3a are connected between a door end stile 31 and a butt stile 33 in a foldable manner. By folding the folding door 3 while pivoting the same about rotation shafts 6, 7 provided to the butt stile 33, an opening enclosed by the door frame 2 is opened and the folding door 3 is developed, thereby bringing the opening to close. The rotation shafts 6, 7 at the butt stile 33 are provided so as to be shiftable toward the center side along the upper frame 21 and the lower frame 22 during the folding operation.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a folding door apparatus.

  2. Description of the Related Art Conventionally, a folding door device in which a folding door formed by connecting a plurality of shojis so as to be foldable is attached to a door frame is known. In this folding door device, when the folding door is folded toward the hanging side, the folded folding door projects in an inverted V shape toward one side of the door frame in the vicinity of the vertical frame on the hanging side ( For example, see Patent Documents 1 to 3).

Japanese Patent No. 4449982 JP 2003-269055 A Japanese Patent Laid-Open No. 2015-133504

  In such a folding door device, since the folding door is folded so as to protrude from the vicinity of the vertical frame on the suspending side, there is a problem that the folded folding door interferes with components arranged around the folding door.

  For example, if you try to install a shutter on the outside of the folding door device, the guide rail of the shutter attached close to the outside of the vertical frame will interfere with the folding door, and in the worst case, the folding door will be folded. I can't do that.

  Also, the vertical frame is provided with a plurality of sealing members, fins (side wall portions), and the like that are in contact with and sealed against the surface of the saddle. May interfere with fins. In particular, since the seal member always interferes with the suspension base regardless of whether the folding door is deployed or folded, adhesion, wear, and settling are likely to occur.

  Then, an object of this invention is to provide the folding door apparatus which can avoid interference with the folding door and the components arrange | positioned in the periphery on the folding origin side of a folding door.

  In order to achieve the above object, the present invention provides a door frame (upper frame (for example, upper frame 21 described later)), a lower frame (for example, lower frame 22 described later) and a vertical frame (for example, vertical frames 23 and 24 described later). For example, a plurality of shojis (for example, a shoji 3a to be described later) are folded between a door frame 2) to be described later, and a toe fence (for example, a toe guard 31 to be described later) and a hanging ledge (for example, a hanging heel 33 described later). Folding doors (for example, folding doors 3 to be described later) that are connected to each other are provided, and the folding doors are folded while rotating around rotating shafts (for example, rotating shafts 6 and 7 to be described later) provided on the suspension base. By opening the opening surrounded by the door frame and unfolding the folding door, the folding door device closes the opening. And shiftable toward the center along the lower frame It is provided to provide a folding door apparatus (e.g. described later folding door apparatus 1).

  The vertical frame includes a seal member (for example, a vertical frame packing 241 to be described later) that comes into contact with an indoor side finding surface (for example, an indoor side finding surface 33a to be described later) of the hanging genre when the folding door is unfolded. And at least one of the lower frames, the outer periphery of the rotary shaft of the suspension base provided so as to be gradually inclined in the protruding direction of the folded door as it goes to the center side, and shifted and moved toward the center side It is preferable to have a tapered surface (for example, a tapered surface 9 to be described later) that moves the suspension base in a direction away from the seal member by abutting the surface and guiding the rotating shaft in the projecting direction.

  In at least one of the upper frame and the lower frame, the shift movement of the rotation shaft of the suspension ledge is restricted to a second position shifted from the first position arranged when the folding door is deployed to the center side. It is preferable to provide a rotating shaft restricting member (for example, a rotating shaft restricting member 8 described later).

  At least one of the upper frame and the lower frame is in contact with the outer peripheral surface of the rotary shaft of the suspension base that is displaced from the first position toward the center side, and is moved over the rotary shaft to move over the rotary shaft. It is preferable to have a stepped portion (for example, a stepped portion 83 described later) that can be held at the position 2.

  ADVANTAGE OF THE INVENTION According to this invention, the folding door apparatus which can avoid interference with the folding door and the components arrange | positioned in the periphery on the folding origin side of a folding door can be provided.

It is a front view of the folding door apparatus which concerns on one Embodiment of this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a cross-sectional view of the folding door apparatus which shows the folding state of a folding door. It is a cross-sectional view of the folding door side of the folding door device showing the folding state of the folding door. It is a cross-sectional view by the side of the suspension origin of the folding door apparatus which shows the folding state of a folding door. It is a top view which shows the detail of a rotating shaft control member.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a front view of a folding door device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. FIG. 5 is a cross-sectional view of the folding door device showing the folding state of the folding door, FIG. 6 is a cross-sectional view of the folding door device showing the folding state of the folding door, and FIG. It is.

  The folding door device 1 includes a door frame 2 formed in a rectangular shape by an upper frame 21, a lower frame 22 and left and right vertical frames 23 and 24, and a folding door 3 attached to the door frame 2.

  In the folding door 3, two shojis 3a made of, for example, a glass panel are attached via an auxiliary rod 34 between the door rod 31 and the intermediate rod 32 and between the suspension rod 33 and the intermediate rod 32. . Each auxiliary rod 34 is rotatably supported on the intermediate rod 32 by a hinge 35. Thereby, each shoji 3a is attached to the intermediate collar 32 so that it can be folded. In FIG. 1, reference numeral 25 denotes an upper hook, 26 denotes a lower hook, and 36 denotes an opening / closing handle attached to the intermediate hook 32.

  As shown in FIG. 2, a rotating shaft 4 is projected from the upper end of the door toe 31. A suspension wheel 41 is provided at the tip of the rotating shaft 4. The suspension vehicle 41 is placed on a pair of guide rails 211 formed along the length direction of the upper frame 21. Thereby, the door end side of the folding door 3 is suspended from the upper frame 21. The rotating shaft 4 is slidably engaged with a guide groove 212 formed by a pair of guide rails 211.

  In addition, a rotating shaft 5 projects from the lower end of the door rod 31 concentrically with the rotating shaft 4. The rotating shaft 5 has a rotatable guide roller 5a at the tip. The rotating shaft 5 is engaged with a guide roller 5 a slidably in a guide groove 221 formed along the length direction of the lower frame 22. Thereby, the rotating shaft 5 guides the movement of the door rod 31 along the lower frame 22 when the folding door 3 is expanded and folded, and prevents the folding door 3 from swinging indoors and outdoors.

  The rotation shaft 5 on the lower side of the door toe 31 is provided so as to be movable up and down, and is inserted into a locking hole (not shown) formed in the lower frame 22 by moving it downward. A lock mechanism for positioning and fixing to the door frame 2 is also used. For this reason, it is not necessary to provide a lock mechanism separately from the rotating shaft 5 on the door end side.

  On the other hand, as shown in FIG. 3, the rotating shaft 6 protrudes from the upper end of the suspension rod 33. A suspension wheel 61 for suspending the folding door 3 to the upper frame 21 is provided at the tip of the rotating shaft 6. The suspension vehicle 61 is placed on the guide rail 211 of the upper frame 21 as in the door end side. Thereby, the suspension side of the folding door 3 is suspended from the upper frame 21. The rotating shaft 6 is also engaged with the guide groove 212 so as to be slidable.

  In addition, a rotating shaft 7 is also provided on the lower end of the suspension base rod 33 so as to be concentric with the rotating shaft 6. The rotary shaft 7 has a rotatable guide roller 7a at the tip. The rotating shaft 7 is also engaged with the guide roller 7a at the guide groove 221 of the lower frame 22 so as to be slidable.

  The lower rotation shaft 7 of the hanging rod 33 is also provided so as to be movable up and down, and is inserted into a locking hole (not shown) formed in the lower frame 22 by moving it downward. A lock mechanism for positioning and fixing to the door frame 2 is also used. For this reason, it is not necessary to provide a lock mechanism separately from the rotating shaft 7 on the suspension base side.

  The door-end fence 31 and the suspension base fence 33 have the same structure, the cross-sectional shape is formed in a substantially rectangular shape, and is provided symmetrically. The door rod 31 and the suspension rod 33 have indoor-side finding surfaces 31a, 33a, outdoor-side finding surfaces 31b, 33b, and prospective surfaces 31c, 33c, which are flat surfaces, respectively, which are rotating shafts 4, 5, 6, 7 is arranged so as to surround 7. Reference numerals 311 and 331 denote buffer packings provided on the prospective surfaces 31c and 33c of the door rod 31 and the suspension rod 33, respectively. The buffer packings 311 and 331 are for preventing unexpected noise from colliding with the vertical frames 23 and 24 when the door rod 31 and the suspension rod 33 rotate.

  The vertical frames 23 and 24 on the door end side and the suspension base side have the same structure and are provided symmetrically. Any of the vertical frames 23, 24 includes indoor side wall portions 23 a, 24 a extending along the indoor side finding surfaces 31 a, 33 a of the folding door 3 when the folding door 3 is unfolded, and the door side wall 31. And outdoor side wall portions 23b, 24b extending along the outdoor side finding surfaces 31b, 33b of the suspension rod 33. The indoor side wall portions 23a and 24a are arranged so as to cover substantially the entire indoor side finding surfaces 31a and 33a of the door rod 31 and the hanging rod 33. The outdoor side wall portions 23b and 24b are a part of the outdoor side finding surfaces 31b and 33b of the door rod 31 and the hanging base rod 33, specifically, the portions near the prospective surfaces 31c and 33c in the outdoor side finding surfaces 31b and 33b. It is arranged to cover.

  Between the indoor side wall portions 23a and 24a of the vertical frames 23 and 24 and the indoor side finding surfaces 31a and 33a of the door rod 31 and the hanging rod 33, and the outdoor side wall portions 23b and 24b of the vertical frames 23 and 24, respectively. Are slightly separated from the outdoor side finding surfaces 31b and 33b of the door toe 31 and the suspension base 33. As shown in FIG. 4, when the folding door 3 is unfolded, the door-end fence 31 and the suspension base fence 33 are located between the indoor side wall portions 23 a and 24 a and the outdoor side wall portions 23 b and 24 b of the vertical frames 23 and 24. It is arranged so that it can be stored in. Thus, the space S between the door-end fence 31 and the suspension ledge 33 and the vertical frames 23 and 24 is not directly observed from the inside and outside of the room by the indoor side wall parts 23a and 24a and the outdoor side wall parts 23b and 24b. In addition to being shielded, it has a U-shaped shape, enhancing the effect of preventing intrusion of wind and water.

  Vertical frame packing, which is a seal member that comes into contact with the indoor side finding surfaces 31a, 33a of the door rod 31 and the hanging rod 33 at the time of deployment, is provided at the ends of the indoor side wall portions 23a, 24a of the vertical frames 23, 24. 231 and 241 are attached to seal the indoor side of the space S. In addition, the ends of the outdoor side wall portions 23b, 24b of the vertical frames 23, 24 are drained as sealing members that are in contact with the outdoor side finding surfaces 31b, 33b of the door rod 31 and the hanging rod 33 at the time of deployment. Packings 232 and 242 are attached to seal the outdoor side of the space S.

  The folding door device 1 draws the handle 36 to the indoor side, and as shown in FIG. 4, the folding door 3 is expanded and deployed so that all the shojis 3a are arranged on one plane, thereby opening the opening surrounded by the door frame 2. It is closed and separated into the indoor side and the outdoor side. When the folding door 3 is folded, the handle 36 is pushed into the outdoor side, and the hanging rod 33 is rotated toward the outdoor side around the rotation shafts 6 and 7, while the door end rod 31 is moved to the upper frame 21 and Pull along the lower frame 22 toward the suspension base. Then, as shown in FIG. 6, the folding door 3 is folded so as to project in an inverted V shape toward the outdoor side, and the opening surrounded by the door frame 2 is opened.

  Here, “indoor side” and “outdoor side” in the present invention distinguish two spaces separated by the folding door 3, and in this specification, the folded folding door 3 projects in an inverted V shape. Is defined as “outdoor side” and the opposite side is defined as “indoor side”. Therefore, the “outdoor” may be a space outside (outdoor) the building, or may be one space of a room inside (indoor) the building. The extending direction of the folded folding door 3 is not limited to the outside of the building or room, but may be the inside of the building or room.

  Next, the configuration on the hanging side of the folding door device 1 will be described in more detail. Normally, the rotation axis of the door toe in the folding door is provided so as to slide greatly toward the suspension side along the upper and lower frames by the folding operation, whereas the rotation axis of the suspension source is unfolded. Regardless of the time or the time of folding, it is fixedly arranged at one position of the upper frame and the lower frame in the vicinity of the vertical frame. However, the rotary shafts 6 and 7 of the suspension base rod 33 in the present invention are not fixed at one place. The rotary shafts 6 and 7 of the suspension base rod 33 in the folding door device 1 are provided so as to be able to shift and move toward the center along the upper frame 21 and the lower frame 22 during the folding operation. Here, “shift movement” means that, when folded, the shafts 5 and 5 of the door toe 31 move a distance that is much shorter than the distance by which the rotary shafts 4 and 5 slide.

  When the folding door 3 is unfolded, the rotary shafts 6 and 7 of the hanging ledge 33 are accommodated between the indoor side wall 24a and the outdoor side wall 24b of the vertical frame 24 as shown in FIG. It is arrange | positioned in the position (1st position) performed, and the folding door 3 has closed opening. The first position is arranged slightly outside the vertical frame packing 241 and slightly closer to the center than the draining packing 242 in the length direction of the upper frame 21 and the lower frame 22. At this time, the space S on the hanging side is sealed by the vertical frame packing 241 and the draining packing 242.

  Then, when the handle 36 is pushed out from the unfolded state toward the outdoor side and the folding operation of the folding door 3 is started, the door toe 31 rotates along the upper frame 21 and the lower frame 22 while rotating around the rotation shafts 4 and 5. Start moving toward the center. On the other hand, since the rotation shafts 6 and 7 of the suspension base rod 33 are provided so as to be shifted and moved toward the center along the upper frame 21 and the lower frame 22, the suspension base rod 33 also has the rotation shafts 6 and 7. While rotating about the center, as shown by the arrows in FIG. 6, the upper frame 21 and the lower frame 22 start to shift from the unfolded position toward the center. After that, when the handle 36 is pushed in until the door toe 31 is pulled to the hanging side, the folding door 3 is folded so as to project in an inverted V shape toward the outdoor side.

  The finally folded folding door 3 is disposed at a position slightly away from the vertical frame 24 on the suspension side toward the center side due to the shift movement of the rotation shafts 6 and 7 of the suspension base 33 to the center side. For this reason, for example, as shown in FIG. 6, even if the guide rail G of the shutter is disposed in the vicinity of the vertical frames 23 and 24 on the outdoor side, the folded folding door 3 and the guide rail G are prevented from interfering with each other. it can. Therefore, it is not necessary to take measures such as shifting the guide rail G further outward, and the appearance can be improved.

  In addition, the suspension rod 33 shifts in a direction away from the vertical frame 24 during the folding operation in accordance with the displacement movement of the rotary shafts 6 and 7 toward the center, so that the vertical frame packing 241 that contacts the suspension base 33 Interference with can also be avoided. For this reason, generation | occurrence | production of adhesion | attachment, abrasion, and settling which arises when the vertical frame packing 241 continues contact | abutting is also suppressed.

  Since the suspension rod 33 moves away from the outdoor side wall portion 24b of the vertical frame 24 while rotating during the folding operation, it does not interfere with the outdoor side wall portion 24b and the draining packing 242 by the folding operation. For this reason, as shown in the present embodiment, the vertical frames 23 and 24 having the same structure can be used symmetrically on the door end side and the suspension base side, and the appearance of the folding door device 1 is also improved.

  Furthermore, the space S between the suspension base rod 33 and the vertical frame 24 can be opened widely by moving the suspension base rod 33 in the direction away from the vertical frame 24 toward the center during the folding operation. . For this reason, indoor and outdoor air can be easily moved between the hanging rod 33 and the vertical frame 24. For example, when the outdoor space of the folding door 3 is a sealed space such as a bathroom, the folding door 3 is air. The phenomenon that it becomes difficult to open due to the resistance of is also less likely to occur.

  When the folding door 3 is unfolded, the operation is reversed, and the rotation shafts 6 and 7 of the hanging hook 33 move toward the hanging frame side vertical frame 24 while rotating in the opposite direction to the folding operation. Accordingly, the suspension rod 33 is accommodated and disposed between the indoor side wall portion 24a and the outdoor side wall portion 24b of the vertical frame 24 while sliding along the upper frame 21 and the lower frame 22. As a result, the space S between the hanger base 33 and the vertical frame 24 is shielded so as not to be directly visible from the inside and outside of the room, and becomes a U-shaped intricately preventing effect of intrusion of wind or water. Is increased.

  As shown in FIGS. 4 to 6, the lower frame 22 is provided with a rotation shaft restricting member 8 in the vicinity of the vertical frame 24 on the hanging base side. As shown in detail in FIG. 7, the rotation shaft restricting member 8 is made of a resin block screwed into the guide groove 221, and includes a first contact portion 81 disposed on the vertical frame 24 side, And a second abutting portion 82 which is arranged at a predetermined distance away from the first abutting portion 81 toward the center side. The rotating shaft 7 below the suspension rod 33 engages with the guide groove 221 so that the portion of the guide roller 7 a is accommodated between the first contact portion 81 and the second contact portion 82. ing.

  The first abutting portion 81 is rotated by abutting the guide roller 7a of the rotating shaft 7 that is displaced toward the vertical frame 24 in the guide groove 221 by an unfolding operation and stopping at the first position 81a. The shaft 7 is restricted from moving further to the vertical frame 24 side. The second abutting portion 82 abuts the guide roller 7a of the rotating shaft 7 that is displaced toward the center side in the guide groove 221 by a folding operation, and the rotating shaft 7 is in a position (second position) By stopping at the position 82a), the rotational shaft 7 is restricted from moving further to the center side. By restricting the displacement movement of the lower rotary shaft 7 of the suspension base rod 33, the movement of the suspension base rod 33 is regulated. Therefore, the displacement movement of the upper rotation shaft 6 is similarly regulated.

  Thereby, the range of displacement movement along the upper frame 21 and the lower frame 22 of the rotary shafts 6 and 7 during the folding operation is shifted by a predetermined distance from the first position 81a to the center side by the rotary shaft restricting member 8. The second position 82a is restricted. Therefore, the excessive shift movement to the center side of the rotating shafts 6 and 7 is prevented, and the folded folding door 3 is prevented from being too close to the center side. In addition, since the first abutting portion 81 prevents the rotating shaft 7 from moving to the vertical frame 24 side from the first position 81a during deployment, the suspension rod 33 may collide with the vertical frame 24. Nor.

  Furthermore, since the guide roller 7a abuts on the second abutment portion 82 and is supported at the second position 82a, the rotation shaft 7 rotates the suspension rod 33 more smoothly when the folding door 3 is folded. And has the effect of excellent folding operability. The second contact portion 82 of the rotary shaft restricting member 8 shown in the present embodiment can stably support the rotary shaft 7 of the hanging rod 33 at the second position 82a and rotate more smoothly. Moreover, although it is formed in the circular arc surface so as to follow the outer peripheral surface of the guide roller 7a, it is not limited to this.

  It should be noted that the distance from the first position 81a to the second position 82a is such that the suspension rod 33 is detached from between the indoor side wall 24a and the outdoor side wall 24b of the vertical frame 24 by a folding operation. It is sufficient that the interference between the folding door 3 and the parts arranged in the vicinity thereof can be avoided by moving the folding door 3, and several tens of mm is sufficient.

  The rotating shaft regulating member 8 shown in the present embodiment is formed so that the first contact portion 81 and the second contact portion 82 are integrally connected within the guide groove 221 of the lower frame 22. The first contact portion 81 and the second contact portion 82 may be configured as separate members separated from each other. Further, the rotating shaft restricting member 8 may be provided on the upper frame 21 in order to restrict the displacement movement of the rotating shaft 6 on the upper side of the suspension rod 33. Further, the rotation shaft restricting member 8 may be provided on both the upper frame 21 and the lower frame 22. In this case, the first contact portion 81 and the second contact portion 82 may be provided separately in the upper frame 21 and the lower frame 22.

  A step 83 is further provided on the lower frame 22. The step portion 83 is located at a position near the second contact portion 82 of the rotation shaft restricting member 8 so as to contact the outer peripheral surface of the guide roller 7a of the rotation shaft 7 that is displaced toward the center. It is provided in the shape of a protrusion that protrudes toward the indoor side from the outdoor inner wall surface 221a of 221. The projecting height of the stepped portion 83 is formed so as to allow the guide roller 7a of the rotating shaft 7 to get over. Between the stepped portion 83 and the second contact portion 82, a space is left so that the guide roller 7 a of the rotating shaft 7 over the stepped portion 83 can be accommodated, and the stepped portion 83 and the second contacted portion 82. The second position 82a is defined between the first position 82a and the second position 82a.

  The rotating shaft 7 shifted and moved toward the center side during the folding operation is securely fixed and held at the second position 82a after the guide roller 7a gets over the step portion 83 and is settled at the second position 82a. The rotating shaft 7 does not return backward toward the first position 81a unless it goes over the step portion 83 again. Accordingly, it is possible to prevent the rotating shaft 7 from retreating unexpectedly toward the first position 81a, and the suspension base rod 33 can be stopped at that position.

  Thereby, the effect which avoids interference with the folding door 3 and the components arrange | positioned around it can be acquired more reliably. Further, since the rotation shaft 7 is securely fixed and held at the second position 82a, the suspension hook 33 can be rotated in a more stable state until the folding is completed. Further, when the guide roller 7a gets over the stepped portion 83, a click feeling and a clicking sound are generated, so that the guide roller 7a is accommodated between the stepped portion 83 and the second abutting portion 82 and the rotating shaft 7 is moved to the second portion. It can be easily perceived that it is held at the position 82a. Thereby, the folding operability of the folding door 3 can be further improved.

  The shape of the stepped portion 83 is not particularly limited as long as the guide roller 7a of the rotation shaft 7 can get over and the rotation shaft 7 that has got over can be held at the second position 82a. The stepped portion 83 shown has a first inclined surface 83a disposed on the first contact portion 81 side and a second inclined surface 83b disposed on the second contact portion 82 side, and has a guide groove. It is formed so as to protrude in a triangular shape from the outdoor inner wall surface 221a of 221.

  The first inclined surface 83a is formed as an inclined surface having a relatively gentle angle. Therefore, when the rotary shaft 7 moves from the first position 81a toward the second position 82a, the guide roller 7a is guided by the first inclined surface 83a and easily gets over the stepped portion 83, and at the time of folding operation The rotating shaft 7 can be smoothly moved to the second position 82a. On the other hand, the second inclined surface 83b is formed as an inclined surface having a steeper angle than the first inclined surface 83a. Therefore, since the guide roller 7a is difficult to get over the second inclined surface 83b, the rotary shaft 7 held at the second position 82a is difficult to move toward the first position 81a. Therefore, the rotation shaft 7 at the second position 82a can be reliably fixed and held between the second inclined surface 83b of the step portion 83 and the second contact portion 82.

  When the rotary shaft 7 passes through the step portion 83, the hanging rod 33 moves slightly to the indoor side, but only slightly moves for a moment, and the shift toward the center side of the rotary shaft 7 is also performed. Since it is near the end of the movement, it does not affect the effect of avoiding interference between the folding door 3 and its peripheral components. Further, the step portion 83 is formed separately from the first contact portion 81 and the second contact portion 82 of the rotation shaft restricting member 8, and is formed on the outdoor inner wall surface 221a of the guide groove 221 by an appropriate fixing means. It may be attached.

  The lower frame 22 is formed with a tapered surface 9 that comes into contact with the outer peripheral surface of the guide roller 7a of the rotating shaft 7 that is displaced toward the center. The first contact portion 81 and the second contact portion of the rotary shaft restricting member 8 are formed such that the taper surface 9 is gradually inclined toward the outdoor side in the projecting direction of the folded folding door 3 as it goes to the center side. 82 is provided on the inner wall surface 221 a on the outdoor side of the guide groove 221 between the guide groove 221 and the guide groove 221. In the present embodiment, the stepped portion 83 described above is disposed at the end of the tapered surface 9 on the center side.

  Since the taper surface 9 is thickest on the first contact portion 81 side of the rotation shaft restricting member 8 and has the highest height from the outdoor inner wall surface 221a, the rotation shaft 7 is at the first position. When arranged at 81a, the rotary shaft 7 is arranged closest to the indoor side. Thereby, at the time of expansion | deployment of the folding door 3, the suspension base rod 33 can be arrange | positioned so that it may contact | abut further with respect to the vertical frame packing 241, and a sealing performance can be improved more.

  On the other hand, the taper surface 9 is thinnest on the stepped portion 83 side of the rotation shaft restricting member 8 and has the lowest height from the outdoor inner wall surface 221a. For this reason, when the rotating shaft 7 moves from the first position 81a to the second position 82a, the rotating shaft 7 is guided slightly toward the outdoor side while sliding the guide roller 7a. This is because during the folding operation, a force directed toward the outdoor side, which is the extending direction of the folding door 3, always acts on the rotary shafts 6 and 7 of the suspension base 33. Thereby, the hanging rod 33 shifts in a direction away from the vertical frame packing 241 toward the center side, and the contact between the hanging rod 33 and the vertical frame packing 241 is weakened. For this reason, the movement of the hanger base 33 becomes easy, and the opening / closing operation of the folding door 3 can be made light.

  The tapered surface 9 shown in the present embodiment is formed integrally with the rotary shaft restricting member 8 so as to connect the first abutting portion 81 and the stepped portion 83, but the first abutting portion 81 and the stepped portion are formed. 83 may be formed so as to be connected to only one of them, or may be provided on the outdoor inner wall surface 221a of the guide groove 221 as a separate component from the rotary shaft restricting member 8. The tapered surface 9 only needs to be provided on at least one of the upper frame 21 and the lower frame 22.

  In the folding door device 1 described above, the two folding screens 3a are connected so as to be foldable to form one folding door 3. However, in the present invention, the number of the sliding screens 3a constituting the single folding door 3 may be plural. There is no limitation, and three or more shojis 3a may be connected so as to be foldable. In addition, the present invention is not limited to a configuration in which the opening of the door frame 2 is closed by a single folding door 3, but may be a configuration in which the door frame 2 is closed by a plurality of folding doors configured to be foldable.

  Moreover, the folding door apparatus 1 demonstrated above was made into the folding door apparatus 1 of the structure suspended from the upper frame 21 by the suspension vehicle 61 similarly to the door end fence 31 also. According to this, it is possible to smoothly shift the rotational shafts 6 and 7 of the suspension base rod 33 by the suspension wheel 61. However, unlike the door toe 31, the hanging ledge 33 does not need to move greatly along the upper frame 21 and the lower frame 22. A simple structure that is slidably suspended on the guide rail 211 by a material or the like may be used.

  Furthermore, the folding door device according to the present invention is not limited to a structure in which the folding door is suspended from the upper frame, but may have a structure in which a door is provided on the lower end side of the folding door and supported by the lower frame so as to be movable. Moreover, the folding door device according to the present invention is not limited to the case where the indoor and the outdoor of the building are separated from each other, but when the door is used as an opening / closing door of a room, or when one room is separated into two spaces such as a partition. Can be applied similarly.

DESCRIPTION OF SYMBOLS 1 Folding door apparatus 2 Door frame 21 Upper frame 22 Lower frame 23, 24 Vertical frame 241 Vertical frame packing (seal member)
DESCRIPTION OF SYMBOLS 3 Folding door 3a Shoji 31 Door fence 33 Hanging origin wall 33a Indoor-side finding surface 6, 7 Rotating shaft 8 Rotating shaft control member 81a 1st position 82a 2nd position 83 Step part 9 Tapered surface

Claims (4)

A door frame composed of an upper frame, a lower frame, and a vertical frame, and a folding door formed by connecting a plurality of shojis so as to be foldable between a door-end fence and a hanging ledge,
Folding door that closes the opening by unfolding the folding door by opening the opening surrounded by the door frame by folding the folding door while rotating around a rotation axis provided on the suspension ridge A device,
The folding door device is provided such that the rotation shaft of the suspension base can be displaced and moved toward the center along the upper frame and the lower frame during a folding operation. The vertical frame has a seal member that comes into contact with a room-side finding surface of the hanging ridge when the folding door is deployed,
At least one of the upper frame and the lower frame is provided so as to be gradually inclined in the protruding direction of the folded door as it goes to the center side, and the rotation of the suspension wrench that moves by shifting toward the center side The folding door device according to claim 1, further comprising a tapered surface that moves in a direction away from the seal member by abutting an outer peripheral surface of the shaft and guiding the rotating shaft in the projecting direction.   In at least one of the upper frame and the lower frame, the shift movement of the rotation shaft of the suspension ledge is restricted to a second position shifted from the first position arranged when the folding door is deployed to the center side. The folding door apparatus of Claim 1 or 2 provided with a rotating shaft control member.   At least one of the upper frame and the lower frame is in contact with the outer peripheral surface of the rotary shaft of the suspension base that is displaced from the first position toward the center side, and is moved over the rotary shaft to move over the rotary shaft. The folding door apparatus of Claim 3 which has a level | step-difference part which can be hold | maintained in 2 position.

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