JP2017155445A - Folding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding door capable of not only rescuing a person shut up on the inside but also being prevented from being operated for the purpose of mischief, and also smoothy openable-closable in normal time.SOLUTION: A folding door is formed as a structure of rotatably connecting a rotary panel 11 and a driven panel 21 by a gear hinge 31, and a guide 18 for regulating a movement range of the driven panel 21 is arranged in an upper part of the folding door, and an upper end surface of the driven panel 21 is provided with a projection shaft 41 extending toward the guide 18. The projection shaft 41 is displaceably held in its axial direction, and is always pushed up by an elastic body 43. A head 42 is also incorporated into the tip of the projection shaft 41, and its central part enters the inside of the guide 18, and a weight-like locking piece 45 formed near its outer periphery contacts with an undersurface of the guide 18. The folding door opens to the outside by pushing down an outer edge part of the locking piece 45 by a driver D, and besides being capable of quickly executing rescue, a structure of the projection shaft 41 and the head 42 is hardly recognized from an appearance, and mischief can be prevented.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a folding door having a function capable of saving a person trapped inside.

  A folding door is a structure in which a plurality of door plates (hereinafter referred to as panels) are rotatably connected. Normally, the panels are arranged side by side to block the passage. However, when the panels are moved to one end side, the plurality of panels are folded. So that the passage is secured. Folding doors have a complicated structure, but do not require a sliding door like a sliding door, and they can be installed comfortably even in narrow spaces, such as bathrooms, toilets, and transportation vehicles, because they are less likely to project forward and backward than swing doors. Widely used at entrances and exits.

  An example of the shape of a general folding door is shown in FIG. This folding door has a structure in which two panels are arranged in a space surrounded by a vertical frame and a guide. Of the two panels, the right pivot panel is free to use the central axis provided at the right end as a fulcrum. Can be rotated. On the other hand, the left driven panel is attached to the rotating panel via a hinge, and both panels can be bent freely within a certain range. Further, the rotating panel and the driven panel are arranged so that the side end surfaces of both faces each other. The folding door can be bent to only one side in consideration of the hinge mounting position, and when opening, the handle is pulled toward the front.

  In FIG. 9, in order to restrict the movement range of the driven panel, a projecting shaft and a suspension car are provided on the upper end surface thereof, and the suspension car enters the inside of the guide and can move only in the direction along the guide. By providing the suspension car, the driven panel cannot be separated from the guide, and when the folding door is opened, the boundary between the rotating panel and the driven panel is furthest away from the guide. In addition to the role of regulating the movement range of the driven panel, the suspension vehicle also has a role of hanging the driven panel. Therefore, the load acting on the hinge and the central axis is reduced, and the folding door can be opened and closed smoothly. The projecting shaft that supports the suspension car can freely rotate with respect to the driven panel, and the rolling direction of the suspension car is always aligned with the longitudinal direction of the guide.

  As an example of the technology related to the present invention, the following patent documents can be cited. Among them, Patent Document 1 relates to a bathroom access device, and is characterized by being able to rescue quickly when an elderly person falls in the bathroom. In this document, it is disclosed that a folding door is used as the entrance of the bathroom, and an emergency exit that can be opened outside is provided in a part of the door. In the case of an abnormality, the person who rescues enters the bathroom through the emergency exit, and the person to be rescued Open the folding door from the inside. In Patent Document 1, it is assumed that the folding door is locked from the bathroom side, and the person to be rescued falls down so as to push in the folding door, and it is difficult to open the folding door by a normal method.

  Patent Document 2 discloses a bathroom structure using folding doors, and this document is also characterized by being able to easily rescue a bather who has fallen down in the bathroom, as in Patent Document 1 above. The bathroom structure of Patent Document 2 is composed of a pair of folding doors and a sleeve shoji that is adjacent to the pair, and the sleeve shoji is open only when a large material is carried in. Ordinary entrance and exit use a folding door. . And assuming the situation where the bather fell down so as to push in the folding door, the sleeve shoji can be opened and closed from the outside. In order to realize this, a slidable fixing pin is provided on the side edge of the sleeve shoji, and the sleeve shoji is usually locked with the fixing pin. However, in case of emergency, operate the fixing pin from the outside of the bathroom to unlock the sleeve shoji so that the rescuer can enter the bathroom.

Japanese Utility Model Publication No. 5-67790 JP-A-11-303518

  When a folding door is used as a doorway in a bathroom or toilet private room, when the person inside falls down and rescues from the outside, the folding door is first unlocked by some means. However, if the person inside falls down to push in the folding door, the folding door may not be opened even after unlocking. Therefore, as in Patent Document 2, it is preferable that the folding door can be opened to the outside by a simple method in an emergency. However, as shown in FIG. 9 of the present application, the folding door is often used as a folding door, and it is difficult to introduce the same structure (slidable fixing pin) as in Patent Document 2 as it is.

  In FIG. 2 and FIG. 3 of the above-mentioned Patent Document 2, it is depicted that a lever (symbol: 36) is incorporated in order to slide the fixing pin (symbol: 35) for locking the sleeve shoji up and down. Is exposed on the side of the vertical frame of the sleeve shoji. With such a structure, rescue can be carried out easily. However, in public facilities that are used by an unspecified number of people, the lever is operated for mischief, which may cause confusion for subsequent users. Therefore, the means that can open the door in the event of an emergency should not be recognized by ordinary users.

  The present invention was developed on the basis of such a situation, and in addition to being able to rescue a person trapped inside, it is intended to provide a folding door that can be operated for mischief and that can be opened and closed normally. Yes.

  The invention according to claim 1 for solving the above-mentioned problem is a folding door composed of a rotating panel and a driven panel, the rotating panel being rotatable about a central axis, and the driven panel. Uses a gear hinge composed of a pair of gears supported and meshed with the rotating panel and a pair of arms integrated with the gear and attached to the panel, and the gear hinge is located at the boundary between adjacent panels. Arranged in two upper and lower positions, one arm is attached to one panel, the other arm is attached to the other panel, adjacent panels are pivotally connected, and the upper part of the folding door is A guide for restricting a range of movement of the driven panel is disposed; a protruding shaft extending toward the guide is provided on an upper end surface of the driven panel; the protruding shaft is held movably in the axial direction; and Elasticity The head having a hook-like locking piece is incorporated at the tip of the protruding shaft, the central portion of the head enters the inside of the guide, and the locking piece has a diverging weight, The folding door is characterized in that the upper surface of the locking piece contacts the lower surface of the guide.

  The folding door according to the present invention uses a gear hinge utilizing the meshing of a pair of gears, and has a structure in which a plurality of panels serving as door plates are rotatably connected, and one of the plurality of panels is referred to as a rotating panel, The rest will be referred to as a driven panel. Among them, the rotating panel is attached to a frame or the like via a central axis, and can be rotated within a certain range with the central axis as a fulcrum, like a normal hinged door. Further, the driven panel is connected to the adjacent panel via a gear hinge without incorporating the central shaft. Note that a plurality of driven panels may be connected to the end of a single rotating panel, and in that case, the entire folding door is shaped like a folding screen.

  The gear hinge includes a pair of gears and an arm attached to each gear, and the pair of gears can be freely rotated while maintaining a center-to-center distance by some means so as to maintain meshing. The arm is a part for connecting the gear hinge and the panel, and is attached to the ring-cut surface of the gear, and one arm is used for one gear. Therefore, two arms are paired like the gear, and when one arm is rotated, the other arm rotates in the opposite direction by the same angle. Then, when a gear hinge is placed at the boundary between two adjacent panels, one arm is attached to one panel and the other arm is attached to the other panel, the two panels can rotate via the gear hinge. Connected to

  In addition to the gear and the arm, the gear hinge requires a pin for rotatably holding each gear and a connecting plate for integrating the two pins, but these specific structures are free. Also, the shape of the arm can be freely determined depending on the relationship with the panel, and it may be a simple straight line that touches the top or bottom surface of the panel, or a shape that sandwiches the side surface of the panel There is also. And a gear hinge is arrange | positioned in two places, the upper end part of an adjacent panel, and a lower end part. Of course, the upper and lower gear hinges need to align the gears concentrically so that the panel can rotate smoothly.

  The guide is arranged in the head portion above the folding door, plays a role of regulating the movement range of the driven panel, and is an indispensable part for the folding door as in the past. The driven panel is rotatably connected to an adjacent panel, but its movement range is restricted by a guide. Therefore, when opening and closing the folding door, the boundary between adjacent panels protrudes most from the guide, and the two panels move while drawing an isosceles triangle with the boundary as the vertex.

  The projecting shaft is a shaft that extends vertically from the upper end surface of the driven panel toward the guide, and holds the head at its tip. The projecting shaft is structured so as to be movable in the axial direction (vertical direction), and an elastic body is incorporated so that the protruding shaft is always pushed upward. The method for incorporating the elastic body can be freely selected.

  The head is a part having a generally conical shape, and its central portion enters the inside of a cavity formed in the lower surface of the guide. Therefore, the movement range of the driven panel is restricted, and the function as a folding door is ensured. Conventionally, a driven vehicle is often used instead of a head to suspend a driven panel. However, in the present invention, since the gear hinge is used for connecting the panels, the driven panel can be stably supported, the conventional suspension wheel is not required, and a simpler head can be used. When the projecting shaft is forcibly pushed down, the head is separated from the guide, and the driven panel can be freely moved without being restricted by the guide.

  The locking piece is a weight-like part formed near the outer periphery of the head, and this raises the protruding shaft by contacting the lower surface of the guide. Further, since the locking piece has a weight shape, the upper slope of the locking piece is in contact with the lower surface of the guide only in a limited range, and a clearance is secured at the outer edge of the locking piece without contacting the lower surface of the guide. . When a flathead screwdriver or the like is inserted into this gap and the head is pushed down, the head is pulled away from the guide.

  In this way, by using a movable protruding shaft and incorporating a head having a locking piece at its tip, the center of the head normally enters the inside of the guide, the range of movement of the driven panel is restricted, and as a folding door Function is secured. However, if the head is pushed down artificially, the follower panel can move freely, and the folding door can be opened in a different way from the original. Therefore, in the event of an abnormality, the head is pushed down from the outside, the rotating panel and the driven panel are opened outside, and the inside person is rescued.

  The fact that the head and protruding shaft can be pushed down cannot be recognized simply by looking at the exterior of the folding door. For this reason, the head is pushed down unintended and the folding door does not open in a state different from the original state. However, an administrator who recognizes the structure of the folding door can easily open the folding door by pressing down the head using various tools, and can quickly rescue the person trapped inside. In addition, it is easy to push down with a tool by making the locking piece of the head into a weight shape.

  The head and the projecting shaft according to the present invention can be introduced into a folding door that does not use a gear hinge. However, the head does not have a function of suspending the driven panel, and the load of the hinge connecting the adjacent panels increases. Therefore, with a simple hinge, the weight of the panel cannot be supported, the driven panel gradually hangs down, and the head may be detached from the guide. As a countermeasure, a large hinge may be used, but there are many disadvantages such as securing a mounting space, deterioration of aesthetics, and heavy opening / closing operation. On the other hand, since the gear hinge is attached at two places, upper and lower, it is excellent in strength and aesthetics, and is easy to open and close.

  As in the first aspect of the present invention, in the folding door in which the rotating panel and the driven panel are rotatably connected using a gear hinge, the driven panel incorporates a protruding shaft that is movable in the axial direction. By moving the head into the guide, the movement range of the driven panel is regulated. Therefore, normally, it can be used like a conventional folding door. Furthermore, when the person inside falls down to push the panel due to sudden illness and the folding door cannot be opened by a normal method, the head can be pushed down from the outside to open the panel to the outside, and the fallen person can be rescued.

  The protruding shaft and the head are arranged in the gap between the panel and the guide and are not easily noticed by the human eye. Further, it cannot be recognized from the appearance that the protruding shaft and the head can be pushed down. Therefore, it is possible to prevent the folding door from being opened by mischief even in public facilities where an unspecified number of people enter and leave. Moreover, in the event of an emergency, an administrator or the like can easily open the folding door to the outside with a single tool, and rescue can be carried out quickly. In addition, it is easy to push down with a tool by making the locking piece of the head into a weight shape.

  Since the gear hinge is attached so as to face the upper end portion and the lower end portion of the panel, adjacent panels can be connected with high rigidity. For this reason, the driven panel can be supported only by a gear hinge without using a suspension wheel or the like, and hardly hangs down even at the distal end side of the driven panel far from the central axis. , Can withstand actions such as hanging.

It is a perspective view which shows the example of a shape of the folding door by this invention. It is a perspective view which shows the procedure at the time of rescue of the person who fell down inside in the folding door of FIG. It is a perspective view which shows the state which opened the folding door to the outside in order to rescue the person who fell down inside after FIG. It is a perspective view which shows the state which opened the folding door of FIG. 1 normally. It is a longitudinal cross-sectional view which shows the protrusion shaft of the folding door of FIG. 1, and the detailed structure of the periphery. It is a perspective view which shows the gear hinge which improved the intensity | strength, arrange | positions two pairs of gears up and down, and has inserted the large diameter board and the small diameter board between the upper and lower gears. It is a perspective view which shows an example of the method of attaching a gear hinge to a rotation panel or a driven panel. The gear hinge in this figure is provided with an jaw that functions as a stopper. It is a perspective view which shows the case where this invention is introduce | transduced into the folding door comprised with three panels, and the protrusion axis | shaft is integrated in each of two driven panels. It is a perspective view which shows the example of a shape of a common folding door.

  FIG. 1 shows an example of the shape of a folding door according to the present invention. This folding door is composed of two door plates called a rotating panel 11 and a driven panel 21. The rotating panel 11 and the driven panel 21 are arranged so that both side end surfaces thereof face each other, and gears are arranged at two upper and lower positions. A hinge 31 is arranged to connect the rotating panel 11 and the driven panel 21. In addition to the vertical frame 10 surrounding the folding door, a guide 18 for restricting the movement range of the driven panel 21 is arranged on the upper side next to the rotating panel 11. In the illustrated folding door, the lower right side is described as “outside” and the upper left side is described as “inside”. The inside is assumed to be a toilet room and the outside is assumed to be a passage.

  The rotation panel 11 can be rotated about the central axis 15 as a fulcrum, like a normal hinged door. The central axis 15 in the figure is held by a guide 18 and a floor surface. On the other hand, the driven panel 21 is rotatably connected to the rotating panel 11 and a protruding shaft 41 extends from an upper end surface thereof. A head 42 is incorporated at the tip of the protruding shaft 41. The central portion of the head 42 enters the guide 18 and the movement range of the driven panel 21 is restricted. Therefore, when opening and closing the folding door, the boundary between the rotating panel 11 and the driven panel 21 protrudes most from the guide 18, and both the panels 11 and 21 move while drawing an isosceles triangle as viewed from above.

  The gear hinge 31 includes a pair of gears 33 and 34 that maintain meshing, and a pair of arms 37 and 38 that are integrated with the individual gears 33 and 34. One arm 37 is attached to the rotating panel 11. The other arm 38 is attached to the driven panel 21. Furthermore, one end side of the arms 37 and 38 is formed in a U shape so as to sandwich the side surface of the rotating panel 11 or the driven panel 21. Therefore, the number of screws 39 inserted from the arms 37 and 38 can be increased, and the rotating panel 11 and the driven panel 21 are firmly integrated with the gear hinge 31.

  In addition to the gears 33 and 34 and the arms 37 and 38, the gear hinge 31 passes through the center of the gears 33 and 34, and a pin 35 that rotatably holds the gears 33 and 34, and a pair of pins 35 are spaced at a certain interval A connecting plate 36 to be held in the housing is also required. The upper and lower gear hinges 31 are arranged so that the gears 33 and 34 are concentrically aligned. In addition, the arms 37 and 38 are embedded in the surface so as not to protrude from the side surfaces of the rotating panel 11 and the driven panel 21. Therefore, when the folding door is completely opened, the rotation panel 11 and the driven panel 21 are in close contact with each other without a gap.

  Parts used for opening and closing the folding door, such as a handle 24, are arranged on the distal end side (left side in the figure) of the driven panel 21. Of these, the handle 24 is used when entering from the outside to the inside, and by pulling the handle 24 toward the front, the gear hinge 31 enters inside, and the pivot panel 11 and the driven panel 21 move so as to be folded. In addition, due to the nature of the gear hinge 31, it is possible to push it into the back in addition to pulling the handle 24 forward, but here, a stopper is incorporated so that it cannot be pushed in.

  In the vicinity of the handle 24, an inner key 25, a latch 26, and a release ring 27, which serve as a locking mechanism for the folding door, are incorporated. Among them, the inner key 25 is a knob for locking the folding door from the inside. When this is operated, the latch 26 protrudes from the side end surface of the driven panel 21 and enters into the opposing frame (not shown). To fix. The release wheel 27 is for operating the inner key 25 from the outside, and rotates only with the inner key 25, and is used only in an emergency, such as when a person falls down inside. For this reason, when operating the release wheel 27, a tool such as a driver D is required, which prevents an inadvertent operation.

  The protruding shaft 41 extending from the upper end surface of the driven panel 21 is movable in the axial direction thereof, and is further pushed upward by an elastic body 43 incorporated in the driven panel 21. Get inside. Further, the weight-like locking piece 45 formed near the outer periphery of the head 42 has its upper inclined surface in contact with the lower surface of the guide 18 to restrict the head 42 from rising. Since the locking piece 45 has a weight shape, a gap is secured at the outer edge portion without contacting the lower surface of the guide 18.

  When a person falls inside the folding door of FIG. 1 and rescues from the outside, first, an administrator or the like operates the release wheel 27 to unlock the folding door. However, if a fallen person is pushing near the center of the folding door, it is difficult to open the folding door in the usual way. Therefore, as depicted in the upper left of FIG. 1, a tool such as a screwdriver D is inserted into the gap between the guide 18 and the locking piece 45, and the head 42 is pushed down and pulled away from the guide 18. Thereby, the driven panel 21 can be freely moved, and the rotating panel 11 and the driven panel 21 can be handled like a hinged door.

  FIG. 2 shows a procedure when a person who falls down inside the folding door of FIG. 1 is rescued. When the folding door is closed as shown in this figure and the inner key 25 is operated and locked, first, the driver D is inserted into the center of the release wheel 27 from the outside to release the locking. However, even after releasing the lock, if the person inside falls down so as to push in the vicinity of the boundary between the rotating panel 11 and the driven panel 21, even if the handle 24 is pulled from the outside, the rotating panel 11 and the driven panel 21 are I can't move. Therefore, the driver D is moved to the vicinity of the boundary between the driven panel 21 and the guide 18, and the tip is inserted between the locking piece 45 and the guide 18, and the head 42 and the protruding shaft 41 are pushed down.

  FIG. 3 shows a state in which the folding door is opened outward in order to rescue a person who has fallen inside after FIG. 2. As shown in FIG. 2, when the head 42 and the projecting shaft 41 are pushed down, the driven panel 21 is released from the restriction by the guide 18 and can be opened outward. In this state, both the rotating panel 11 and the driven panel 21 rotate with the central shaft 15 as a fulcrum, but the rotating panel 11 and the driven panel 21 can be freely bent by the gear hinge 31 and handled. There is no problem. In addition, the rotating panel 11 and the driven panel 21 are firmly connected so that the driven panel 21 hangs down and does not contact the floor.

  FIG. 4 shows a state in which the folding door of FIG. 1 is normally opened. In FIG. 1, when the handle 24 is pulled toward the front, the boundary between the rotating panel 11 and the driven panel 21 jumps inward, and the tip of the driven panel 21 jumps outward. When the folding door is completely opened, the rotating panel 11 and the driven panel 21 are folded in the vicinity of the vertical frame 10, and a passage is secured under the guide 18. Note that the folding door in the figure regulates the opening direction, and the boundary between the rotating panel 11 and the driven panel 21 does not jump out to the outside. In addition, a handle 28 is provided on the inner key 25 in consideration of opening and closing of the folding door from the inside.

  FIG. 5 is a longitudinal section showing a detailed structure of the protruding shaft 41 of the folding door of FIG. 1 and its periphery. The projecting shaft 41 can move in the vertical direction, but in order to realize this, a focusing tube 46 is embedded in the driven panel 21, and the projecting shaft 41 moves up and down. A coil-like elastic body 43 is disposed in the focusing tube 46, and the protruding shaft 41 is always pushed upward by the reaction force. Further, a head 42 is incorporated at the tip of the protruding shaft 41. The central portion of the head 42 enters the inside of the guide 18, but the locking piece 45 near the outer periphery of the head 42 contacts the lower surface of the guide 18.

  The head 42 is in contact with the projecting shaft 41 via a bearing 47 and can freely rotate to reduce friction when opening and closing the folding door. In order to incorporate the head 42, a set bolt 48 is used. When opening and closing the folding door, the head 42 is inevitably pushed out either inside or outside, and only one point of the locking piece 45 comes into contact with the guide 18, so that the rotation of the head 42 is inhibited. Absent.

  Since the locking piece 45 has a conical shape and descends toward the outside, a gap is secured at the outer edge portion of the locking piece 45 without contacting the lower surface of the guide 18. When a driver D or the like is inserted into this gap and the head 42 is pushed down, the elastic body 43 is compressed and contracted via the protruding shaft 41, and the head 42 is completely pulled away from the guide 18. Therefore, the driven panel 21 can move freely without being restricted by the guide 18. When the driver D is separated from the locking piece 45, the protruding shaft 41 is pushed upward again.

  The present invention has a structure in which the protruding shaft 41 can be pushed down, a weight-like locking piece 45 is formed on the head 42, and a gap is secured between the outer edge of the locking piece 45 and the lower surface of the guide 18, and this gap A feature is that tools such as a screwdriver D are inserted into the door, and the folding door can be opened by a method different from usual, and the detailed shapes of the projecting shaft 41 and the head 42 may be freely determined. In addition, in this figure, the driven panel 21 and the guide 18 are separated from each other, so that the sealing property cannot be secured. This is a problem at locations where the interior and the exterior are partitioned, but is not a problem as an indoor partition.

  FIG. 6 shows a gear hinge 32 with improved strength. The gear hinges 31 and 32 used in the present invention are arranged at two places above and below the boundary between the rotating panel 11 and the driven panel 21 as shown in FIG. Therefore, the distance between the upper and lower gear hinges 31 and 32 is increased, inevitably improving the durability against bending moments, etc. Even when a large load is intentionally applied to the driven panel 21, the driven panel 21 hangs down to the floor. You can avoid situations such as contact. However, in order to realize this, the gear hinges 31 and 32 themselves need to have sufficient strength.

  Therefore, the gear hinge 32 in FIG. 6 uses two pairs of gears 33 and 34, with the gears 33 and 34 being stacked one above the other, and a large-diameter plate 53 and a small-diameter plate between the upper and lower gears 33 and 34. 54 is sandwiched. The large-diameter plate 53 is incorporated in the gear 33 on the right side of the figure, and its outer edge protrudes greatly from the concentric gear 33 and is sandwiched between the gears 34 on the left side. The small-diameter plate 54 is incorporated in the left gear 34 to secure a space for the large-diameter plate 53 to enter. The large-diameter plate 53 transmits a vertical load between the left gear 34 and the right gear 33, and the gear hinge 32 can receive a larger load.

  It is desirable that the large-diameter plate 53 is in close contact with the gear 33 located thereon so that the vertical load can be smoothly transmitted through the large-diameter plate 53. Therefore, a short screw 57 is inserted from the upper surface of the gear 33 and the large-diameter plate 53 is drawn. In order to insert the shaft portion of the short screw 57, a hole is added to the gear 33, and a female screw 58 to be screwed with the short screw 57 is provided on the large diameter plate 53. In addition, the length of the short screw 57 is adjusted so as not to protrude from the gear 33 or the large diameter plate 53.

  The gear hinge 32 in FIG. 6 uses fixing bolts 52 to fix the parts arranged concentrically. The head of the fixing bolt 52 is housed inside the gears 33 and 34, and the tip of the fixing bolt 52 is screwed into a female screw 56 provided on the arms 37 and 38. In addition, the arm 37 on the right side has a U-shape at one end so as to sandwich the side surface of the rotating panel 11, and by inserting screws 39 in a plurality of directions from there, the gear hinge 32 and the rotating panel 11 are connected. Can be firmly integrated. However, the left arm 38 has a simpler planar shape. As described above, the detailed shapes of the arms 37 and 38 are arbitrary.

  FIG. 7 shows an example of a method for attaching the gear hinge 32 to the rotating panel 11 and the driven panel 21. In the present invention, the gear hinge 32 needs to be firmly integrated with the rotating panel 11 and the driven panel 21 in order to prevent the driven panel 21 from drooping. Therefore, in FIG. 7, a metal relay rod 61 is interposed in the attachment of the gear hinge 32. The relay rod 61 is embedded in a lateral groove 68 formed on the upper and lower end surfaces of the rotating panel 11 and the driven panel 21, and is fixed to the rotating panel 11 and the driven panel 21 by inserting a wood screw 65 into the countersunk hole 62. . Corresponding to the relay rod 61, the arms 37 and 38 have a simple planar shape.

  After the relay rod 61 is embedded in the rotating panel 11 and the driven panel 21, the arms 37 and 38 of the gear hinge 32 are placed so as to cover the relay rod 61, and further, from the arms 37 and 38 toward the female screw 63 of the relay rod 61. When the screw 39 is inserted, the attachment of the gear hinge 32 is completed. The rotating panel 11 and the driven panel 21 are often made of wood, and are liable to loosen screws due to secular deformation. However, by using the relay rod 61, the number of the wood screws 65 is increased, and further, the looseness can be suppressed by pressing the heads of the wood screws 65 with the back surfaces of the arms 37 and 38. As shown in this figure, the relay rod 61 has a simple shape, and the size and the number of countersunk holes 62 can be easily changed. Therefore, the optimally shaped relay rod 61 can be used based on the load condition, and sufficient strength can always be secured.

  In FIG. 7, as in FIG. 6, a gear hinge 32 composed of two pairs of gears 33 and 34 is used, but naturally this is replaced with a gear hinge 31 composed of a pair of gears 33 and 34 shown in FIG. 1 and the like. You can also. Further, the gear hinge 32 of FIG. 7 is provided with jaws 60 on the individual arms 37 and 38 in order to provide a function as a stopper. When the opposing jaw 60 contacts, the rotation range of the gear hinge 32 is restricted, and the opening direction of the folding door is limited. In the present invention, it is assumed that the folding door is opened outside in an emergency, and a general stopper may not be diverted. Therefore, as shown in FIG. 7, the gear hinge 32 may have a function as a stopper. In addition, the lower right of FIG. 7 depicts a state in which the rotating panel 11 and the driven panel 21 are normally opened after the gear hinge 32 is attached.

  FIG. 8 shows a case where the present invention is introduced into a folding door composed of three panels. The present invention can be introduced not only into a folding door composed of two panels but also into a folding door composed of three or more panels, and here, between the rightmost rotating panel 11 and the leftmost driven panel 21, Another driven panel 22 is sandwiched, and a gear hinge 31 is incorporated at each boundary. Further, the two driven panels 21 and 22 each incorporate a protruding shaft 41 that is movable in the vertical direction, and can be separated from the guide 18 by pushing down the locking piece 45.

10 Vertical frame 11 Rotating panel 15 Center axis 18 Guide 21 Driven panel (located at the left end)
22 Follower panel (located in the center)
24 Handle 25 Inner key 26 Latch 27 Release wheel 28 Pull handle 31 Gear hinge (a pair of gears)
32 Gear hinge (two pairs of gears)
33 Gear (vertical frame side)
34 Gear (handle side)
35 pin 36 connection plate 37 arm (vertical frame side)
38 Arm (handle side)
39 Screw 41 Projection shaft 42 Head 43 Elastic body 45 Locking piece 46 Concentration tube 47 Bearing 48 Locking bolt 52 Fixing bolt 53 Large diameter plate 54 Small diameter plate 56 Female screw (for fixing bolt)
57 Short screw 58 Female screw (for short screw)
60 jaw 61 relay rod 62 countersink 63 female screw (upper surface of relay rod)
65 Wood screw 68 Horizontal groove D Driver

Claims (1)

A folding door composed of a rotating panel (11) and driven panels (21, 22),
The pivot panel (11) is pivotable about a central axis (15), and the driven panels (21, 22) are supported by the pivot panel (11).
A gear hinge (31 or 34) comprising a pair of meshing gears (33, 34) and a pair of arms (37, 38) integrated with the gears (33, 34) and attached to the panel (11, 21, 22). 32)
The gear hinge (31 or 32) is arranged at two places above and below the boundary between the adjacent panels (11, 21, 22), and one arm (37) is attached to one panel (11 or 22). Attaching, the other arm (38) is attached to the other panel (21 or 22), and adjacent panels (11, 21, 22) are rotatably connected,
On the upper part of the folding door, a guide (18) for restricting the movement range of the driven panel (21, 22) is arranged,
On the upper end surface of the driven panel (21, 22), a protruding shaft (41) extending toward the guide (18) is provided,
The protruding shaft (41) is held so as to be movable in the axial direction, and is always pushed up by the elastic body (43).
A head (42) having a flange-like locking piece (45) is incorporated at the tip of the protruding shaft (41), and a central portion of the head (42) enters the inside of the guide (18), and The locking piece (45) has a divergent weight, and the upper surface of the locking piece (45) contacts the lower surface of the guide (18).

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