JP2008214944A - Sliding type folding door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding type folding door device, opening and closing right and left folding door parts to be operatively connected with each other, and having favorable operability. <P>SOLUTION: This sliding type folding door device includes an endless ring-like member 62 wrapped round a pair of right and left rotors 61, 61 and two rocking members 63, 64, which are disposed on the upper sides or lower sides of both folding door parts 20, 30, wherein the endless annular member 62 is so constructed that one linear part 62a is fastened to one moving support part 52a, and the other linear part 62b is fastened to the other moving support part 52b. Each rocking member 63 is engaged with the moving support part 52a, which is moved with the opening initial operation of one folding door part 20, to rock, thereby pressing a portion rather closer to the door end side than the moving support part 52b in the other folding door part 30, so that the portion is bent downward. At least one folding door part of the both folding door parts 20, 30 are energized in the closing direction by an energizing means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a draw-type folding door device provided with folding door portions that are opened and closed by folding or unfolding on both the left and right sides of an opening.

Conventionally, as a related technique of this type, there is a double-sided sliding door described in Patent Document 1. This double-sided sliding door includes an endless ring-shaped member (endless strip 14) that is hung over a pair of left and right rotating bodies (pulleys 12 and 12) above the sliding doors (1A, 1A '). One sliding door (1A) is fixed to one linear portion of the endless ring-shaped member, and the other sliding door (1A ′) is fixed to the other linear portion of the endless ring-shaped member.
Therefore, according to the both-side draw type sliding door, when one sliding door (1A) is opened or closed, the other sliding door (1A ') is also interlocked by the endless ring-shaped member (endless strip 14). An opening operation or a closing operation will be performed.

By the way, as an invention in which the interlocking mechanism using the endless ring-shaped member described above is applied to a folding door device, for example, two folding doors described in Patent Document 2 are provided on the left and right sides of the opening to constitute a draw-type folding door device. A configuration is proposed in which both folding doors of the draw-type folding door device are interlocked by an endless ring-shaped member described in Patent Document 1.
However, in the draw-type folding door apparatus having the above-described configuration, there is a risk of malfunction in the initial operation when the fully closed folding door starts the opening operation.
That is, in a general folding door device, a linear motion that guides a suspension car that holds a door-end side door body in the width direction of the opening, and folding or unfolding between the door-end side door body and the door-end side door body Opening and closing operations are performed by two motions, such as a rotating motion.
Therefore, even if the linear motion of one folding door and the linear motion of the other folding door are linked using the endless ring-shaped member, the draw-type folding door in the fully closed state is opened because the rotational motion is not linked. In the initial stage of operation, the opening operation of one folding door and the opening operation of the other folding door are not linked.
In addition to the interlocking mechanism as described above, the draw-type folding door device is also required to have an automatic closing mechanism that automatically performs a closing operation to further improve operability. .
Japanese Utility Model Publication No. 5-96375 JP-A-10-131551

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is to provide a draw-type folding door device that can open and close the left and right folding doors in conjunction with each other and also has good operability. There is to do.

  In order to solve the above-mentioned problem, the first invention is connected to a door-side door body rotatably supported with respect to an immovable part and to a door-end side portion of the door-butt side door body so as to be rotatable. Door-end side door body and a moving support portion that supports the door-end side door body so as to be rotatable from the upper side and / or the lower side and move in the width direction of the opening. A folding door that has a folding door part that is opened by turning the door side door body in the opposite direction while rotating the side door body in one direction, and the folding door part is arranged on the left and right sides. In the apparatus, the endless ring-shaped member includes an endless ring-shaped member hung around a pair of left and right rotating bodies on the upper side or the lower side of the folding doors, and two swinging members. The part is fixed to one moving support part, and the other linear part is fixed to the other moving support part. The moving member engages and swings with the moving support portion that moves in accordance with the initial opening operation of one of the folding doors, and presses a portion of the other folding door that is closer to the door bottom than the moving support portion, A portion is provided to be bent in a valley shape, and at least one of the folding door portions is biased in a closing operation direction by a biasing means.

  Here, the draw-type folding door device means a folding door device that has folding door portions on both the left and right sides of the opening, and opens the left and right folding door portions so as to be drawn in the left-right direction. Therefore, this folding door device does not include a single-folding folding door device provided with only a single folding door portion that can be opened in one direction.

  The immovable part may be an immobile part with respect to the rotatable door butt side door body, and the immovable part includes a frame member surrounding the folding door part and an installation target of the folding door device. And the like.

  The opening width direction means the width direction of the opening that is opened and closed by the folding door. For example, when the folding door is provided to open and close in the left-right direction, the opening width direction. Is the left-right direction.

  In addition, as a specific example of the swing member, it is formed in a bowl shape or a rod shape straddling the left and right folding doors, and the one end side portion and the other end side portion thereof are alternately moved closer to and away from the folding door portion. When the middle part in the vertical direction is pivotally supported, and its one end side part is in contact with the moving part and swings, the other end side part is pressed against the door support side part of the folding door part. Then, the portion is bent in a valley shape.

  The means for urging the folding door portion in the closing operation direction includes, for example, a mode in which the folding door portion is urged by a torsional force of a coil spring provided on a base shaft portion of the door bottom side door body to perform the closing operation. A mode in which the folding door part is biased by the weight of the folding door part itself to perform a closing operation, a mode in which the folding door part is biased by a weight of a separately provided weight body, and a closing operation, a tension force or compression of a tension spring Examples include a mode in which the folding door portion is urged by a resilient force of a spring to perform a closing operation.

  In the second invention, the urging means is provided with a torsion spring for urging the door butt side door body in the closing rotation direction at a base shaft portion serving as a rotation center portion of the door butt side door body. It is characterized by.

  In the third aspect of the invention, the urging means includes a cam mechanism on the lower end side of the base shaft portion serving as a rotation center portion of the door butt side door body, and the cam mechanism is provided on the door butt side. An inclined surface that is inclined in the direction of rotation of the door body and a sliding contact portion that can be slidably contacted with the inclined surface are arranged up and down, and the door bottom side door body is formed by the inclined surface and the sliding contact portion. It is characterized by converting the force due to its own weight into a rotational force.

  Here, the inclined surface may be provided corresponding to the entire rotation range of the door butt side door body, or provided corresponding to a part of the rotation range of the door butt side door body. Also good.

  Moreover, in 4th invention, the said inclined surface is provided corresponding to the one part range by the side of the fully closed position in the rotation range of the said door butt side door body.

  Moreover, in 5th invention, with respect to each of the said door butt side door body and the said door tip side door body in at least one said folding door part, it is the surface of the one side which becomes the open rotation direction side, and a surface on the opposite side. A handle portion protruding from the one surface is provided only on the one surface.

  Here, the surface on the opening rotation direction side is one surface of each door body of the door bottom side door body and the door tip side door body, and the direction in which each door body rotates as an opening operation. Means the side face.

In addition, the shape of the handle portion is arbitrary as long as it is provided so as to protrude from the surface on the opening direction side, but the handle portion does not include a handle portion configured in a concave shape.
This handle portion is not provided on the surface opposite to the surface on the opening direction side.
A single handle portion or a plurality of handle portions may be provided on the surface on the opening direction side.
The handle portion is preferably disposed closer to the door end with respect to each of the door-end side door body and the door-end side door body, but may be disposed closer to the door end.
Moreover, if it demonstrates in detail with one surface used as the said opening rotation direction side, each door body of the said door bottom side door body and the said door tip side door body will rotate for opening operation | movement. It means one surface located on the direction side.

Since the present invention is configured as described above, the following effects can be obtained.
According to the first invention, when one folding door portion in the fully closed state is opened, the movement support portion corresponding to the folding door portion moves in the opening width direction and is engaged with the moving movement support portion. As a result, the swing member swings. And a rocking | fluctuation member presses the part of the door bottom side rather than the movement support part in the other folding door part, and bends this part in a valley fold shape.
On the other hand, along with the opening operation of the one folding door portion, one linear portion of the endless ring-shaped member moves and the other linear portion of the endless ring-shaped member moves in the reverse direction.
Therefore, the one folding door part fixed to one linear part via the moving support part continues the opening operation, and the other folding door part fixed to the other linear part via the moving support part. However, the opening operation is continued in conjunction with it.
Further, when closing both open folding doors, at least one of the folding doors is urged in the closing direction by the urging means and automatically closes. The other folding door portion also performs a closing operation in conjunction with the one folding door portion.
Therefore, the left and right folding doors can be opened and closed in conjunction with each other, and the operability is also good.

  Furthermore, according to the second invention, the urging means for urging the folding door portion in the closing direction can be made into a specific aspect with good productivity and space saving.

  Furthermore, according to 3rd invention, this door bottom side door body can be rotated in a closing direction using the dead weight of the door bottom side door body.

  Furthermore, according to 4th invention, the closing operation of a folding door part is accelerated on the way. Therefore, it can prevent that the folding door part which carried out closing operation stops in the middle of closing due to friction etc., and by extension, the folding door part at the time of full closure extends in the direction of an opening part. And appearance can be improved.

Furthermore, according to the fifth invention, when the door-end side door body and the door-end side door body are folded so as to be substantially fully opened, the handle portion of the door-end side door body and the handle portion of the door-end side door body Both project in the opposite direction to the opening. Therefore, in this fully open state, the opening width can be secured relatively wide without the handle portion protruding toward the opening side.
In addition, since the handle portion is disposed so as to protrude from the surface of the door body, the handle portion can be easily grasped, and an opening / closing operation for pushing and pulling the handle portion can be favorably performed. In particular, for example, when an elderly person or a handicapped person who is walking on a handrail on a corridor wall surface opens and closes the folding door device, the hand holding the handrail on the corridor wall surface is used as a handle portion of the folding door device. It is easy to grasp and change operability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the folding door device 1 opens and closes an opening S in a frame 10 including left and right vertical frames 11 and 12 and an upper frame 13 fixed to a structure such as a building. Of the folding doors 20 and 30, the base shaft 40 that rotatably supports the door bottom side of each folding door 20 (or 30), and the door-end side door body 22 (or 32) of each folding door 20 (or 30). ) In the width direction of the opening S (see FIG. 2), and an interlocking mechanism 60 that interlocks the opening and closing operations of the folding doors 20 and 30.

  Each folding door portion 20 (or 30) includes a door butt side door body 21 (or 31) that is rotatably supported via a base shaft portion 40 with respect to the vertical frame 11 (or 12) that is a stationary portion, and the door It is comprised from the door-end side door body 22 (or 32) connected so that rotation with respect to the door-end side part of the buttocks side door body 21 (or 31) was carried out.

The door bottom side door body 21 (or 31) includes a handle 21a that protrudes only on the surface in the opening rotation direction side (upper side in FIG. 4) near the door tip side.
The handle portion 21a includes a substantially cylindrical gripping portion 21a1 that is disposed apart from the surface of the door butt side door body 21, and the door butt side so as to rotatably support the grip portion 21a1 on its upper and lower sides. It consists of support parts 21a2 and 21a2 fixed to the surface of the door body 21.

Further, the door-end side door body 22 (or 32) has the same configuration as that of the door-end side door body 21 only on the surface in the opening rotation direction side (the lower side in FIG. 4) near the door-end side. The handle portion 21a is provided.
If it demonstrates in detail, this door-end side door body 22 (or 32) will be formed larger in width dimension than the door bottom side door body 21, and the handle part 21a is a folding door as shown in FIG. It arrange | positions so that it may not interfere with the door butt side door body 21 in the fully open state of the parts 20 and 30. FIG.

The door-end side door body 21 (or 31) and the door-end side door body 22 (or 32) having the above-described configuration are connected by a hinge 23 (or a hinge) having a known structure at a predetermined interval w1 (see FIG. 10). Has been.
The said space | interval w1 does not pinch the thing, a hand, etc. by any chance when a thing, a hand, etc. are inserted between the door-end side door body 22 (or 32) and the door-end side door body 22 (or 32). In the preferable example of the present embodiment, the hinge 23 is set within a range of 14 to 20 mm, and is one end side in the door thickness direction (vertical direction in FIG. 10) at w1. At the other end side, thin plate-like elastic bodies 24, 24, which will be described later, are arranged so as to face each other and come close to or contact each other.

  Further, the thin plate-like elastic bodies 24 and 24 overlap each other at the door end side ends of the left and right folding door portions 20 and 30, that is, the door end side ends of the left and right door tip side door bodies 22 and 32, respectively. It is arranged like this.

Each thin plate-like elastic body 24 is formed in an approximately long shape that is continuous in the vertical direction of the folding door portions 20 and 30 with an elastic material such as a synthetic rubber or an elastic synthetic resin material.
More specifically, the thin plate-like elastic body 24 includes an elastic deformation portion 24a having a substantially spatula-like cross section that gradually becomes thinner toward the tip, and supports the elastic deformation portion 24a on the base end side and a folding door. It is comprised from the fitting part 24b fitted by the part 20 (or 30).
The thin plate-like elastic bodies 24 are respectively disposed on the door-end side portions of the left and right door-end side door bodies 22 and 32 so as to face each other when both the folding door portions 20 and 30 are substantially fully closed. And the front-end | tip parts which these thin plate-shaped elastic bodies 24 and 24 oppose overlap so that it may have the overlap allowance w2 set suitably.
The overlap margin w2 is secured to about 0.5 to 10 mm, for example, so that a gap does not occur between the left and right thin plate-like elastic bodies 24 and 24 due to manufacturing dimensional variations or the like.

  Further, the gap w3 between the opposing left and right door-end side door bodies 22 and 32 and not having the thin plate-like elastic body 24 does not allow a thing or a hand to be caught. 14 to 20 mm is secured.

  Moreover, the base shaft part 40 which supports each door butt side door body 21 (or 31) so that rotation is possible is the same as the upper side base shaft part 41 arrange | positioned at the upper part of the door butt side door body 21 (or 31). It consists of the lower base shaft part 42 arranged at the lower part of the door-end side door body 21 (or 31) (see FIG. 7).

The upper base shaft portion 41 includes a substantially inverted L-shaped fixed portion 41a and a rotating portion 41b that can rotate with respect to the fixed portion 41a, and the fixed portion 41a is a vertical frame 11 (or an immobile portion). 12) and the rotating portion 41b is fixed to the upper part of the door-end side door body 21 (or 31).
The upper base shaft portion 41 is fixed to the upper rotating portion 41b and the upper rotating portion 41b by the torsional force of a torsion spring 41b1 (for example, a coil spring) included in the rotating portion 41b. The side door body 21 (or 31) is urged in the closing rotation direction.

In addition, the lower base shaft portion 42 is supported by a substantially L-shaped fixing portion 42a fixed to the vertical frame 11 (or 12), which is a non-moving portion, and rotatably supported by the fixing portion 42a. It consists of the rotation part 42b fixed to the lower part of the door bottom side door body 21 (or 31).
The lower base shaft portion 42 constitutes a cam mechanism 42ab that converts the weight of the door butt side door body 21 (or 31) side into a rotational force and rotates the rotating portion 42b.

More specifically, the cam mechanism 42ab is provided with an inclined surface 42a1 inclined downward in the closing rotation direction of the door-side door body 21 (or 31) around the rotation center portion of the fixed portion 42a. On the other hand, a slidable contact portion 42b1 slidably contactable with the inclined surface 42a1 is provided around the rotation center portion of the rotating portion 42b.
According to the illustrated example, the inclined surface 42a1 is configured as one side portion of the bottom surface of the substantially V-shaped groove. The sliding contact portion 42b1 is configured as a substantially V-shaped protrusion.

The operation of the cam mechanism 42ab will be described in detail. When the door-end side door body 21 (or 31) rotates in the closing direction from the fully opened state, the rotating portion 42b is substantially set with respect to the fixed portion 42a. It rotates in the one direction (counterclockwise according to FIG. 8) from the orthogonal state (the state shown in FIG. 8).
During this rotation, within the range of the first angle θ shown in FIG. 8, the rotating part 42b slides the sliding contact part 42b1 on the flat upper end surface of the fixed part 42a as shown in FIG. 9 (a). Will be in contact.
When the rotation angle of the rotating portion 42b exceeds the angle θ, as shown in FIG. 9B, the sliding contact portion 42b1 of the rotating portion 42b slides down the inclined surface 42a1 of the fixed portion 42a. A rotational force in the closing direction of the rotating part 42b and the door-end side door body 21 (or 31) is generated, and the rotation is accelerated.
Therefore, even if the torsional force of the torsion spring 41b1 of the upper base shaft portion 41 is weakened in the latter half of the closing rotation of the doorside door body 21 (or 31), the doorside door body is caused by the rotational force of the cam mechanism 42ab. 21 (or 31) can be automatically rotated until it is in the fully closed position.

  Further, when the door butt side door body 21 (or 31) is in the fully closed position, the fully closed state is the V-shaped groove that forms the inclined surface 42a1 and the V that forms the sliding contact portion 42b1. It is maintained by fitting with the letter-shaped protrusion.

  According to a preferred example shown in FIG. 8, the inclined surface 42a1 ′ acting substantially the same as the inclined surface 42a1 is disposed closer to the rotation center than the inclined surface 42a1 in the fixed portion 42a, and the rotating portion 42b. Is provided with a sliding contact portion (not shown) that acts in substantially the same manner as the sliding contact portion 42b1, but omits one of the inclined surfaces 42a1 (42a1 ′) and the corresponding sliding contact portion. Is also possible.

  The guide mechanism 50 for guiding the door-end side door body 22 (or 32) in the width direction of the opening S is a guide fixed in the width direction of the opening in the upper frame 13 above the folding door portions 20 and 30. A rail 51 (see FIG. 3) and left and right block-like movement support portions 52a and 52b that can move in the width direction of the opening along the guide rail 51 are provided. Each movement support portion 52a (or 52b) The door end side door body 22 (or 32) is suspended so as to be capable of opening and closing.

Further, the interlocking mechanism 60 includes an endless ring-shaped member 62 hung over a pair of left and right rotating bodies 61 and 61 and two swinging members 63 and 64 on the upper side of the folding door portions 20 and 30. Composed.
This interlocking mechanism 60 interlocks the opening initial operation of one folding door portion 20 (or 30) with the other folding door portion 30 (or 20) by the swing member 63 (or 64), and further, the opening operation is endless. Continue with the ring-shaped member 62.

More specifically, as shown in FIG. 6, the endless ring-shaped member 62 includes a rotating body 61 that is supported in a pulley-like shape that is rotatable on one end side in the upper frame 13, and the other end in the upper frame 13. It is hung between a rotating body 61 supported in the form of a pulley that can be pivoted to the side.
Therefore, the endless ring-shaped member 62 hung between these two rotating bodies 61, 61 has two linear portions 62a, 62b.
One movement support portion 52a is connected to one linear portion 62a, and the other movement support portion 52b is connected to the other linear portion 62b.
Therefore, when one moving support portion 52a linearly moves in one direction, the other moving support portion 52b linearly moves in the opposite direction.

  Further, as shown in FIG. 4, each swinging member 63 (or 64) is brought into contact with the moving support portion 52a (or 52b) that moves in accordance with the initial opening operation of one folding door portion 20 (or 30). One end side is swung, and the other end side is brought into contact with the abutting bracket 65 on the door bottom side of the other folding door portion 30 (or 20) with respect to the movement support portion 52b (or 52a), thereby Folding door 30 (or 20) is folded into a valley fold.

If it demonstrates in detail, the one rocking | swiveling member 63 was formed in the rod shape ranging over one door-end side door body 22 and the other door-end side door body 32, and was bent by the planar view substantially L-shape. An engaging roller 63a is rotatably supported at the protruding end on one end side, and a wide pressing portion 63b is formed on the other end side. The swing member 63 is supported so as to alternately swing the portion on the engagement roller 63a side and the portion on the pressing portion 63b side with a halfway point in the length direction as a fulcrum.
The other swinging member 64 is formed by disposing the same member as the swinging member 63 in the left and right direction, and has an engaging roller 64a on one end side and a pressing portion 64b on the other end side. .

  Further, the abutted bracket 65 abutted by the pressing portion 63b (or 64b) of the swinging member 63 (or 64) is upward from the upper end of the door bottom side portion of the door-end side door body 22 (or 32). It protrudes and is arranged to receive the pressing portion 63b of the swing member 63.

According to the above configuration, for example, as shown in FIG. 4A, when one of the folding door portions 20 (left side in the illustrated example) receives an external force and starts an opening operation, the folding door is accompanied with the opening initial operation. The movement support portion 52a corresponding to the portion 20 linearly moves in the opening opening direction (left direction in FIG. 4).
The external force may be a force by an operation of pulling the handle portion 21a of the door-end side door body 21 with a hand or a force of an operation of pulling the handle portion 21a of the door-end side door body 22 with a hand. May be.
Further, the external force may be a force generated by an operation of pushing between the left and right door-end side door bodies 21 and the door-end side door body 22 in the rotation direction (upward in FIG. 4).

Then, the movement support portion 52a that has linearly moved contacts the engagement roller 63a of one swinging member 63, thereby swinging the portion on the side of the engagement roller 63a of the swinging member 63 away from the folding door portion 20. Let
Therefore, the pressing portion 63b of the swinging member 63 presses the abutted bracket 65 at the upper end of the folding door portion 30, and the other folding door portion 30 opens as shown in FIG. 4B. Start.

As shown in FIG. 4C, if one of the folding doors 20 is further opened by an external force, the movement support 52a corresponding to the folding door 20 is further linearly moved in the opening opening direction (left direction in FIG. 4). To do.
Therefore, the endless ring-shaped member 62 is rotated along with the linear motion of the movement support portion 52a, and the other movement support portion 52b linearly moves in a direction opposite to the movement direction of the movement support portion 52a (see FIG. 6). ), The other folding door portion 30 also continues the opening operation (see FIGS. 4C to 5A).

Then, the left and right folding door portions 20 and the folding door portion 30 that perform the opening operation in conjunction with each other as described above are fully opened as shown in FIG. 5B.
This fully open state is maintained by one or both of the folding door portions 20 and 30 being locked by a locking tool (not shown) in the upper frame 13. In addition, as another example, it is also possible to omit the locking tool and to maintain the fully open state.

  And in the said full open state, as shown to FIG. 5 (B), the opening part width W can be ensured comparatively widely, without each handle part 21a projecting to the opening part S side.

  According to the above operation example, the left folding door 20 illustrated in the figure is opened by an external force, and the right folding door 30 is interlocked with the opening operation. However, the right folding door 30 illustrated in FIG. Even when the opening operation is performed, the folding door portion 20 is interlocked in the same manner.

Moreover, when closing both the folding door parts 20 and 30 of a full open state, it becomes a reverse order to the above. That is, for example, if one of the folding door portions 20 is closed by an external force, the movement support portion 52a corresponding to the folding door portion 20 linearly moves in the opening closing direction (right direction in the drawing) and interlocks with the linear movement. Then, the movement support portion 52b also moves in the opening closing direction (left direction in the drawing).
The closing operation at this time is assisted by the biasing force of the torsion spring 41b1 in the upper base shaft portion 41. Further, from the middle of the closing operation, the cam composed of the inclined surface 42a1 of the lower base shaft portion 42 and the sliding contact portion 42b1. It is also assisted by the mechanism 42ab.

Therefore, it is possible to prevent any one or both of the left and right folding door portions 20 and 30 from being stopped during closing due to friction of the base shaft portion 40 and other portions.
Moreover, in the fully closed state, as shown in FIG. 10, the elastic deformation portion 24a at the tip of one folding door portion 20 and the elastic deformation portion 24a at the tip of the other folding door portion 30 overlap, but these elastic deformation portions 24a, 24a. Since both are formed in thin shape, it can prevent that the other folding door part 30 (or 20) inclines with respect to one folding door part 20 (or 30), and stops.

  In addition, according to the said embodiment, although the handle part 21a was provided with respect to both the right and left folding door parts 20 and 30, respectively, the handle part 21a was provided only with respect to any one folding door part 20 (or 30). It is also possible to adopt an aspect.

  Further, according to a preferred example of the present embodiment, the position of the handle portion 21a in the door body width direction (the left-right direction in the drawing) is closer to the door end side end portion of the corresponding door body 21, 22, 31, or 32. However, as another example, it is also possible to set the position away from the door end side end to the door bottom side. In this case, the handle portion 21a of the door butt side door body 21 (or 31) is disposed at least on the door tip side of the base shaft portion 40, and the handle portion 21a of the door tip side door body 22 (or 32) is moved at least. It arrange | positions rather than the support part 52a (or 52b) at the door-end side.

  Moreover, according to the said embodiment, although the handle part 21a is provided with respect to one surface of each door body 21 (or 22, 23, 24), as another example, each door body You may make it provide with two or more in the up-down direction, a horizontal direction, or a diagonal direction with respect to one surface of 21 (or 22, 23, 24).

Moreover, each handle part 21a is the opening rotation direction about each of the door bottom side door body 21 (or 31) and the door end side door body 22 (or 32) which comprises the folding door part 20 (or 30). It is provided so as to protrude only on the one surface of the one surface serving as the side and the surface on the opposite side. That is, the handle part 21a which protrudes in the one surface in the door butt side door body 21 (or 31) and the other surface in the door tip side door body 22 (or 32) is provided, respectively, and the door butt side door body is provided. A protruding handle portion is not provided on the other surface 21 (or 31) and the one surface of the door-end side door body 22 (or 32).
However, as another example, in each door body 21, 22, 31, or 32, a handle portion (not shown) recessed in a substantially concave shape or the like is provided on the surface where the protruding handle portion 21a is not provided. May be.
According to the other example, the folding door portion 20 or 30 can be opened / closed by an operation of pulling the recessed handle portion, and the opening / closing operability can be further improved.

Further, according to the above-described embodiment, the movement support portion 52a (and 52b) slides along the guide rail 51. However, as another example, the suspension-like movement support portion rolls along the guide rail. It may be a moving structure (not shown).
Moreover, according to the said embodiment, although the movement support part 52a (or 52b) and the guide rail 51 were provided only in the upper side of the corresponding door-end side door body 22 (or 32), as another example, It is also possible to provide it on the lower side of the door-end side door body 22 (or 32), or provide it on both the upper and lower sides.

  Also. According to the above embodiment, the rotating body 61 in the interlocking mechanism 60 is configured as a pulley and the endless ring-shaped member 62 is an endless ring-shaped metal wire. As another example, the rotating bodies 61 and 61 and the endless ring-shaped member 62 are endless. The ring-shaped member 62 can be a mechanism including a belt and a pulley, or a chain and a sprocket.

  Moreover, in the said embodiment, each rocking | swiveling member 63 (or 64) is a part of the door bottom side rather than the movement support part 52b (or 52a) in the folding door part 30 (or 20) via the to-be-contacted bracket 65. However, the abutted bracket 65 may be omitted, and a mode of directly contacting the folding door 30 (or 20) may be employed.

  Further, according to the above-described embodiment, the closing operation of both the left and right folding door portions 20 and 30 is urged by the urging means (specifically, the torsion spring 41b1 and the cam mechanism 42ab). As an example, only the closing operation of one folding door portion 20 (or 30) may be urged by the urging means. Also in this configuration, the closing operation of one folding door portion 20 (or 30) can be interlocked with the other folding door portion 30 (or 20) by the interlocking mechanism 60.

  In the above embodiment, one of the torsion spring 41b1 and the cam mechanism 42ab provided as the urging means can be omitted. It is also possible to reverse the vertical relationship between the upper base shaft portion 41 having the torsion spring 41b1 and the lower base shaft portion 42 having the cam mechanism 42ab.

  Moreover, according to the said embodiment, although each folding door part 20 (or 30) comprised as a single-folding type folding door rotated and folded only to one direction, as another example, each folding door part 20 (or 30) can also be configured as a double-folding folding door that rotates in both directions. In this case, for example, it is preferable to provide two interlocking mechanisms 60 so as to be positioned on both sides with the guide mechanism 50 interposed therebetween. According to this configuration, the opening initial operation of the other folding door portion 30 (or 20) can be interlocked regardless of which one folding door portion 20 (or 30) is opened and rotated.

In addition, according to a preferred example of the above embodiment, the thin plate-like elastic bodies 24, 24 between the left and right folding door portions 20, 30 are configured to overlap each other, but as another example, without overlapping as described above, The thin plate-like elastic body 24 may be in contact with the other thin plate-like elastic body 24.
In addition, one of the thin plate-like elastic bodies 24, 24 between the left and right folding door portions 20, 30 is omitted, and the other is in contact with or overlapped with the door end side end portion of the folding door portion (20 or 30). A configuration is also possible.

  As another example, as shown in FIG. 11, a plurality of thin elastic bodies 24, 24 between the left and right folding door portions 20, 30 are arranged in the door body thickness direction (vertical direction in FIG. 11). 2), and the closing property between the left and right folding doors 20, 30 may be further improved. According to this configuration, an act of intentionally inserting an object or the like between the left and right thin plate-like elastic bodies 24, 24 can also be prevented.

As another example, as shown in FIG. 12, a thin plate-like elastic body 24 ′ whose front end side is bent in a curved shape is fixed to each door end side end of each of the left and right folding door portions 20, 30. It is also possible to adopt a configuration in which the thin plate-like elastic bodies 24 ′ and 24 ′ are in contact with each other.
Further, a plurality of the thin plate-like elastic bodies 24 ′ and 24 ′ may be provided in the door thickness direction, or the thin plate-like elastic body 24 ′ and the above-described thin plate-like elastic body 24 may be provided in combination. It is.

  Moreover, although the folding door apparatus 1 of the said embodiment is set as the structure which the left and right folding door parts 20 and 30 are open | released manually, and is automatically closed by the urging | biasing force of an urging means, the left and right folding door parts 20 and 30 are linear motors. It is also possible to improve to a configuration that automatically opens and closes, a configuration in which the opening and closing operations of the left and right folding door portions 20 and 30 are assisted by the power of the linear motor.

Moreover, you may make it provide a lock | rock, a locking device, etc. with respect to the said opening / closing apparatus 1. FIG.
The configuration of the lock, the locking device, or the like may be a configuration in which the left and right folding door portions 20 and 30 are respectively locked, or only one folding door portion 20 (or 30) is locked and the other folding door portion 30 (or 20). May be locked by the interlocking mechanism 60.

Moreover, you may make it add the door stopper which fixes the right and left folding door parts 20 and 30 to the said folding door apparatus 1 in a fully open position or the open middle position.
The door stopper may be in an aspect integrated with the folding door device 1 (for example, a configuration in which the folding door portion 20 and / or the folding door portion 30 in the fully opened state or in the middle of opening is locked in the upper frame 13). Even if the folding door device 1 is a separate body (for example, a configuration in which a locking member is sandwiched between the lower end of the folding door portion 20 and / or the folding door portion 30 when fully opened or / and opened) and the floor surface. Good.
Moreover, this door stopper is good also as a structure which latches the right and left folding door parts 20 and 30, respectively, only one folding door part 20 (or 30) is latched, and the other folding door part 30 (or 20) It is good also as a structure fixed by interlocking with the interlocking mechanism 60. FIG.

It is a perspective view which shows a closed state about an example of the folding door apparatus concerning this invention. It is a perspective view which shows an open state about the folding door apparatus. It is a disassembled perspective view which shows the folding door apparatus. It is a schematic diagram which shows the opening operation | movement of the folding door apparatus sequentially to (A)-(C). It is a schematic diagram which shows the operation | movement of the opening latter half of the folding door apparatus, (A) shows the middle of opening, (B) has shown the fully open state. It is a bottom view which shows an endless ring-shaped member and a movement support part. It is a perspective view which shows the structure of a base shaft part. It is a top view which shows the lower half part of the cam mechanism in the base shaft part. It is an expanded view explaining operation | movement of the rotation direction of the cam mechanism. It is a principal part expanded horizontal sectional view which shows the attachment structure of a thin-plate-like elastic body, and has expanded and shown the principal part. It is a principal part expanded horizontal sectional view which shows the other examples of the attachment structure of a thin-plate-like elastic body. It is a principal part expanded horizontal sectional view which shows the other example of a thin-plate shaped elastic body.

Explanation of symbols

1: Folding door device 20, 30: Folding door part 21, 31: Door bottom side door body 21a: Handle part 22, 32: Door end side door body 24: Thin plate-like elastic body 40: Base shaft part 41: Upper base shaft part 41b1: Coil Spring (biasing means)
42: Lower base shaft portion 42a: Fixed portion 42a1: Inclined surface 42b: Rotating portion 42b1: Sliding contact portion 42ab: Cam mechanism (biasing means)
50: Guide mechanism 51: Guide rail 52a, 52b: Movement support part 60: Interlocking mechanism 61: Rotating body 62: Endless ring member 63, 64: Oscillating member 62a, 62b: Linear portion

Claims (5)

A door-end side door body that is rotatably supported with respect to an immovable part, a door-end side door body that is rotatably connected to a door-end side portion of the door-end side door body, and the door-end side door The door tips while rotating the door-end side door body in one direction from the moving support section that supports the body so that it can rotate from the upper side and / or the lower side and move in the width direction of the opening. In the draw-type folding door device formed by turning the side door body in the reverse direction and configuring the folding door part to open, and arranging the two folding door parts on the left and right,
An endless ring-shaped member hung over a pair of left and right rotating bodies on the upper side or the lower side of the folding doors, and two swing members,
The endless ring-shaped member fastens one linear portion thereof to one moving support portion, and fastens the other linear portion to the other moving support portion,
Each of the swinging members engages and swings with the moving support portion that moves in accordance with the initial opening operation of one of the folding doors, and presses a portion of the other folding door that is closer to the door bottom than the moving support. And provided to bend the part into a valley fold,
The draw-type folding door device, wherein at least one of the folding door portions is biased in the closing operation direction.   The urging means is provided with a torsion spring for urging the door butt side door body in the closing rotation direction at a base shaft portion which is a rotation center portion of the door butt side door body. The draw type folding door device according to Item 1. The urging means comprises a cam mechanism on the lower end side of the base shaft portion serving as the rotation center portion of the door butt side door body,
The cam mechanism is provided with an inclined surface that is inclined in the direction of rotation of the door butt side door body and a sliding contact portion that can slide in contact with the inclined surface. The draw-type folding door device according to claim 1 or 2, wherein the contact portion converts a force due to the dead weight of the door bottom side door body into a rotational force.   The draw type folding door device according to claim 3, wherein the inclined surface is provided corresponding to a partial range on the fully closed position side in the rotation range of the door-end side door body.   For each of the door-end side door body and the door-end side door body in at least one of the folding door portions, only one of the one surface and the opposite surface on the opening rotation direction side is the one surface. The draw-type folding door device according to any one of claims 1 to 4, further comprising a handle portion protruding from the surface.

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