JP4462918B2 - Sliding door - Google Patents

Description

  The present invention relates to a sliding door used for opening and closing an opening, and more particularly to a sliding door in which a plurality of sliding door bodies are arranged in a flush state when a plurality of sliding door bodies are closed.

  Various doors have been proposed as sliding doors in which a plurality of door bodies are arranged in a flush state when they are closed, but what is common to them is a fixed type as seen in Patent Document 1, for example. The door main body is translated by a parallel link mechanism with respect to the upper and lower rails.

Japanese Patent No. 3080349

  Explaining this configuration in more detail, a plurality of upper and lower rails corresponding to a plurality of door bodies are fixed in parallel at predetermined intervals above and below the door body. When a plurality of door bodies are opened, each door body is normally guided by the corresponding upper and lower rails. When the plurality of door bodies are closed, one of the two adjacent door bodies moves in parallel by the parallel link mechanism so as to be aligned with the other. Thus, when the plurality of sliding door bodies are closed, the door bodies are arranged in a flush state.

  The problem here is that the movement of the door main body supported so as to be movable in parallel by the parallel link mechanism gradually deteriorates. That is, in this parallel link mechanism, the side of the guide roller that engages with the guide rail is the base side, and the door body is singly supported by two parallel levers on the base side. As a result, the door body moves closer to and away from the guide rail and changes from a flush state to a superposed double row state or from a superposed double row state to a flush state. Is added to the distal ends of the two parallel levers. As a result, the guide roller located on the base side is strongly twisted with respect to the guide rail.

  In other words, in a conventional sliding door in which a plurality of door bodies are arranged in a flush state when closed, the parallel moving door body is supported by a parallel link mechanism so that the guide roller on the base side Unnatural force is applied to the guide rail, and the positional relationship between the two changes in the process of continuous use, so that the movement of the door body deteriorates.

  The present invention was devised in view of such circumstances, and the door body that moves in parallel is smoothly moved for a long period of time while the door body is moved in parallel to arrange a plurality of door bodies in a flush state. An object is to provide a sliding door that can be opened and closed.

The sliding doors according to the present invention are arranged in three rows in parallel with the openings open, and at least three sliding door bodies arranged in a row in a flush state with the openings closed, Connect one door body to the central door body so that one door body and the central door body overlap when the door body is opened. Move the door body relatively parallel and move relative to the center door body so that the door body and the center door body are aligned in a row when the door body is closed. The first connecting mechanism is connected to the other door body of the door bodies on both sides and the center door body. When the door body is opened, the other door body and the center door body overlap each other. Move the door away from and parallel to the center door body. A second connecting mechanism for moving the other door body relatively parallel to and approaching the center door body so that the other door body and the center door body are arranged in a line when the body is closed; and the center door body And a center upper rail and both side upper rails arranged in parallel above and corresponding to the door bodies on both sides, and a center support mechanism for supporting the center door body so as to be slidable along the center upper rail. A sliding door that is mounted on the opposite side of the door body on both sides and suspendably supports the door body on both sides along the upper rails on both sides; And a parallel link mechanism for connecting the rail and the center upper rail. The parallel link mechanism includes a long base plate fixed to the lower surface of the upper crosspiece of the opening, a support shaft for fixing the center upper rail to the lower side of the base plate, and a support shaft on the upper side of the center upper rail. A support lever that is pivotally supported and is disposed obliquely with respect to the central upper rail, and both end portions in the length direction of the support lever are rotatably fixed to the upper surface of the upper rail on both sides, and A pair of first pins for arranging the rails on both sides of the support shaft so as to be able to be separated and approached according to the turning of the support lever, and a pair of the first pins attached to the upper surfaces of the upper rails on both sides and opposed to each other with the support shaft interposed therebetween A second pin, and a pair of springs that are suspended between the first pin and the second pin and bias the upper rails in both directions toward the support shaft. When the door body is opened, the support lever pivots against the urging force of the spring, and accordingly, the upper rails on both sides are separated from the support shaft, and the first and second connecting mechanisms are connected to the other door. By moving the main body relatively apart and parallel to the central door main body, the other door main body and the central door main body are arranged in three rows, and when closing the door main body, The support lever pivots due to the urging force of the spring, and accordingly, the upper rails on both sides approach the support shaft and are arranged on the upper side of the central upper rail, and the first and second connecting mechanisms are connected to the other door. By moving the main body relatively parallel and approaching the central door main body, the other door main body and the central door main body are arranged in a line.

  In the sliding door according to the present invention, the plurality of upper rails for guiding the plurality of door main bodies are non-fixed types capable of relative translation. Then, when closing a plurality of door bodies in a flush state, a plurality of upper rails approach each other, and when opening a plurality of door bodies, two adjacent door bodies overlap so that one door body overlaps. On the other hand, the other door main body relatively translates to the separated state together with the corresponding upper rail. For this reason, even if a plurality of door bodies perform opening / closing and accompanying parallel movement, the relative positional relationship between the door bodies and the corresponding upper rail does not change. Therefore, the plurality of doors can maintain a smooth operation for a long time.

When linear cam grooves each having an engaging portion at the end on the center door body side are formed on the upper surfaces of the door bodies on both sides along the length direction of the door bodies on both sides, The coupling mechanism is attached to the upper surface of one end portion in the length direction of the central door body so as to be rotatable from an initial position parallel to the central door body to a rotational position perpendicular to the central door body. And a pivot lever provided on the pivot lever. The pivot lever is movably inserted into a cam groove of one door body and the door body is open on the side opposite to the cam groove with the opening opened. The door body has a cam pin that is positioned at the end and is engaged with the engaging portion of the cam groove in a state where the door body closes the opening. When opening the door body, the pivot lever pivots from the initial position to the pivot position, thereby moving one of the door bodies relatively away from the center door body, and the cam pin from the engaging portion of the cam groove. By moving the cam groove to the end on the side opposite to the engaging portion, the one door body is moved in parallel relative to the center door body, and the cam pin closes the cam groove when the door body is closed. By moving from the end on the counter-engaging portion side to the engaging portion side, one door body is moved in parallel relative to the central door body, and the cam pin is engaged with the engaging portion of the cam groove. When the turning lever is turned from the turning position to the initial position, one of the door bodies is brought closer to the central door body. The second connecting mechanism rotates from the initial position parallel to the central door body to the rotational position perpendicular to the central door body on the upper surface of the other end in the length direction of the central door body. A pivot lever that is freely attached, and a cam groove that is provided on the pivot lever and is movably inserted into the cam groove of the other door body, and the door body is open, and the cam groove is anti-engaged. On the other hand, the door body has a cam pin that is engaged with the engaging portion of the cam groove with the opening closed. When opening the door body, the pivot lever pivots from the initial position to the pivot position, thereby moving the other door body relatively away from the center door body, and the cam pin is moved away from the engaging portion of the cam groove. When the other door body is moved in parallel relative to the center door body by moving the cam groove to the end on the side opposite to the engaging portion, the cam pin is moved away from the cam groove. The other door body is moved in parallel relative to the center door body by moving from the end portion on the side opposite to the engagement portion side, and the cam pin is engaged with the engagement portion of the cam groove. The pivoting lever pivots from the pivoting position to the initial position so that the other door body is relatively close to the central door body.

  Concerning the lower rail, a configuration in which the lower ends of a plurality of door main bodies are guided by one lower rail, and the door main body that moves parallel to the lower rail and the lower rail are connected by a guide mechanism that can be expanded and contracted in the parallel movement direction. However, the structure is simple and preferable.

  As the guide mechanism, a lever is rotatably attached to the lower surface of the door main body that translates with respect to the lower rail, and a guide pin that is slidably engaged with the lower rail is attached to the tip of the lever. A structure in which the door main body is held in a parallel state away from the lower rail is simple and preferable.

  The sliding door according to the present invention is a non-fixed type in which a plurality of upper rails for guiding a plurality of door bodies can be translated in parallel, and the upper side corresponding to the parallel movement accompanying the opening and closing of the door body. Since the rail is moved in parallel with the door body and the positional relationship between the two is not changed, it is possible to avoid the occurrence of an operation failure due to twisting between the two and to ensure a smooth opening / closing operation for a long time.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an upper rail of a sliding door according to an embodiment of the present invention, FIG. 2 is a front view of the door body of the sliding door, and FIG. 3 is a plan view showing a link portion of the upper rail in a separated state. 4 is a view taken along line AA in FIG. 3, FIG. 5 is a plan view showing the link portion of the upper rail in an approaching state, FIG. 6 is a side view of the link portion, and FIG. FIGS. 8A to 8C are plan views showing the process of opening the sliding door step by step, and FIGS. 9A to 9C are the process of opening the sliding door. FIG. 10 is a front view of a guide mechanism that guides the lower end portion of the sliding door, and FIGS. 11A to 11D are plan views showing the operation of the guide mechanism step by step. is there.

  As shown in FIGS. 1 and 2, the sliding door according to the present embodiment opens and closes the opening by three slide-type door bodies 10A, 10B, and 10C, and the door body 10A serves as a guide rail. , 10B, 10C corresponding to three parallel upper rails 20A, 20B, 20C (see FIGS. 3 to 6) and a single lower rail 30 shared between the door main bodies 10A, 10B, 10C (see FIG. 3). 10 and FIG. 11).

  The three upper rails 20A, 20B, and 20C are attached in parallel to the lower surface of the crosspiece above the opening to be opened and closed. More specifically, as shown in FIGS. 3 to 6, a plurality of (three in this case) vertical support shafts 22 are provided below the long base plate 21 fixed to the lower surface of the crosspiece. The upper rail 20B is fixed to both sides of the upper rail 20B, and the upper rails 20A and 20C on both sides are parallel to each other by a parallel link mechanism using a plurality of (here, three) horizontal rotating support levers 23. It is supported movably.

  The central upper rail 20B includes a horizontal portion, a vertical portion that hangs downward from a side edge of the horizontal portion, and a roller receiving portion that is formed at the lower end of the vertical portion. On the other hand, a pair of rollers 11B and 11B are attached to upper surfaces of both side portions of the central door body 10B by L-shaped support fittings 12 and 12, respectively. The rollers 11B and 11B engage with the roller receiving portion of the upper rail 20B, so that the central door body 10B is slidably supported by the central upper rail 20B.

  The upper rails 20A and 20C on both sides sandwiching the upper rail 20B can be translated with respect to the adjacent central upper rail 10C as described above. That is, the upper rails 20A and 20C are rotatably supported by pins 24 perpendicular to both ends of a plurality of support levers 23 arranged in parallel, and each support lever 23 has a central portion at the support shaft 22. It is supported on the upper part of the pivotably.

  Here, each support lever 23 is urged by springs 25, 25 in a direction along the center upper rail 20B. That is, the springs 25, 25 support the upper rail 20C between the pin 24 that supports the upper rail 20A and the pin 26 attached to the other upper rail 20C, so that the upper rails 20A, 20C on both sides are pulled toward each other. Between the pin 24 and the pin 26 attached to the other upper rail 20 </ b> A, the pin 24 is pulled in a tensioned state.

  Thus, the upper rails 20A and 20C on both sides are held in a parallel state approaching the central upper rail 20B in a state where no external force is received, and in a direction away from the upper rail 20B when an external force is applied to both sides. Translate.

  Each structure of the upper rails 20A and 20C on both sides is basically the same as that of the central upper rail 20B, and is provided with a one-support type roller receiving portion below the horizontal portion. Then, the rollers 11A and 11C attached by the flat plate-shaped support fittings 13 and 13 above the door bodies 10A and 10C on both sides are engaged with the roller receiving portions, so that the upper rails 20A and 20C on both sides are The door bodies 10A and 10B on both sides are suspended and supported slidably. Two rollers 11A and 11C are provided on both upper surfaces of the door main body 10A and on both upper surfaces of the door main body 10C, similarly to the roller 11B.

  The following two points should be noted here. First, the upper rails 20A and 20C on both sides are located above the central upper rail 20B. For this reason, the support fittings 13 and 13 that support the rollers 11A and 11C are designed to be longer than the support fitting 12 that supports the rollers 11B. Second, one of the upper rails 20A and 20C (20A) on both sides is displaced to the anti-center side of the door body 10A, and the other (20C) is also displaced to the anti-center side of the door body 10A. Due to this displacement, the support fittings 13 and 13 are attached to the surfaces on the opposite side of the upper ends of the door main bodies 10A and 10B, respectively.

  By such a support mechanism, the upper rails 20A, 20C on both sides are arranged in parallel with each other so that the three door bodies 10A, 10B, 10C are arranged in a flush state in a parallel state closest to the central upper rail 20B. Interference can be avoided (FIGS. 5 and 6). In the parallel state where the upper rails 20A, 20C on both sides are farthest from the central upper rail 20B, the three door bodies 10A, 10B, 10C can be separated in the thickness direction with a predetermined gap (see FIG. 3 and FIG. 3). FIG. 4).

  Reference numeral 40 denotes a vertical cover attached to one of the upper rails 20A and 20C (20A) on both sides by an angle 27.

  The door main bodies 10A, 10B, and 10C are arranged in a flush state between the pillar members 80 and 80 on both sides with the opening closed, and parallelly move away from each other when opening the opening, and overlap with a predetermined gap ( 8 and 9). For this interlock, the door main bodies 10A and 10C on both sides are connected to the central door main body 10B by connecting mechanisms 50 and 50, respectively.

  As shown in FIG. 7, each connecting mechanism 50 has a horizontal turning lever 51 attached to the upper surface of the side end portion of the central door body 10B. The rotation lever 51 is rotatably attached by a support shaft 52 perpendicular to the upper surface of the side end portion of the door main body 10B. A cam pin 53 to be inserted into a cam groove 60 formed on the upper surface of the door main body to be connected is attached to the tip of the rotating lever 51 downward. The cam pin 53 is displaced with respect to the support shaft 52. Specifically, the door body 10A with respect to a parallel line passing through the support shaft 52 in a state where the rotation lever 51 is in an initial position parallel to the door body. , 10C is displaced to the side away.

  The cam groove 60 has a linear portion 61 formed from a side edge portion on the open side (anti-connection side) to a side edge portion on the connection portion side with the door main body, and an arc-like shape continuously provided on the connection portion side. The engaging portion 62 is included. The arc-shaped engagement portion 62 bulges toward the displacement side of the cam pin 53 with respect to the straight portion 61 (the separation side of the door main bodies 10A and 10C), and the door main body connected to the central door main body 10B. The cam pins 53 are fitted to each other so that the rotating lever 51 is held in an initial position parallel to the door body. For this holding, the turning lever 51 is biased by a spring (not shown) in a direction in which the cam pin 53 is fitted into the engaging portion 62.

  Opposite side surfaces of the door main body 10B and the door main bodies 10A and 10B on both sides connected to the door main body 10B are formed in substantially parallel inclined surfaces for avoiding interference and for smooth polymerization.

  As shown in FIGS. 10 and 11, one lower rail 30 shared between the door main bodies 10A, 10B, and 10C is connected to the central door main body 10B by a guide pin 15, and the doors on both sides are connected. The main bodies 10A and 10C are connected by guide mechanisms 70 and 70 having substantially the same structure.

  Each guide mechanism 70 includes two support pins 71 and 72 attached to the lower surfaces of the door main bodies 10 </ b> A and 10 </ b> C, and two guide pins 73 and 74 that engage with the lower rail 30. One guide pin 73 is positioned between the two support pins 71 and 72, and these are connected by two connection levers 75 and 76 combined in a V shape. The two connecting levers 75 and 76 hold the door main bodies 10A and 10C at positions separated from the lower guide 30 by a predetermined distance, and make the through hole into which the guide pin 72 fits into the connecting lever 76 as a long hole. The door main bodies 10 </ b> A and 10 </ b> C are positioned on the lower guide 30 in a state of being stretched and contracted with respect to the lower guide 30.

  The other guide pin 74 is connected to the support pin 72 by another connecting lever 77. The connecting lever 77 is parallel to the connecting lever 75, and is aligned with the connecting levers 75 and 76 when the door main bodies 10A and 10C are positioned on the lower guide 30, and is attached to the lower surfaces of the door main bodies 10A and 10C. The door main bodies 10 </ b> A and 10 </ b> C are held on the lower guide 30 by contacting the stopper 79. The connecting levers 75, 76, and 77 are urged by a spring 78 in a linearly aligned direction.

  The door body 10A, 10B, 10C is equipped with the guide mechanism 70, the guide pin 15, and the guide mechanism 70 in a state where the door bodies 10A, 10B, 10C are completely overlapped, that is, the door bodies 10A, 10B, 10C In order to prevent interference with each other in the fully opened state, the door main body 10A has a guide mechanism 70 at the end on the open side (anti-connection side), the guide pin 15 at the center of the door main body 10B, and the door main body 10C. The guide mechanisms 70 are respectively attached to the end portions on the open side (the anti-connection side).

  Next, the operation of the sliding door according to this embodiment will be described mainly with reference to FIGS. 8 (a) to 8 (c) show the process of gradually closing the three door bodies 10A, 10B, and 10C from the opened state, and FIGS. 9 (a) to 9 (c) show three sheets. It shows in steps until the door main bodies 10A, 10B, 10C are further closed and the opening is completely closed.

  Three door main bodies 10A, 10B, 10C are slidably provided between pillar members 80, 80 provided on both sides of the opening. When the opening is completely open, as shown in FIG. 8A, the three door bodies 10A, 10B, and 10C are completely overlapped.

  More specifically, the central door body 10B is supported so as to be able to traverse by a fixed central upper rail 10B, and is located at the left end in FIG. In the door main bodies 10A and 10C on both sides in the figure, the rotation levers 51 and 51 of the coupling mechanisms 50 and 50 rotate at a substantially right angle from the initial position, and the cam pins 53 and 53 open the linear portions 61 of the cam grooves 60 and 60, respectively. It is fitted to the end of the side (the anti-connection side). As the pivot levers 51 and 51 rotate at a substantially right angle from the initial position, the door main bodies 10A and 10C are held farthest from the door main body 10B, and accordingly, the upper rails 20A and 20C on both sides are located at the center. It is held in a state farthest from the upper rail 20B.

  Below the door main bodies 10A and 10C on both sides, the connecting levers 75, 76, and 77 are inclined at the maximum angle against the urging force of the spring 78 by the guide mechanisms 70, so that the door main bodies 10A and 10C are lowered. It is held away from the rail 30 [see FIG. 11 (a)].

  When closing the door main bodies 10A, 10B, 10C from this state, as shown in FIGS. 8B and 8C, the center door main body 10B is traversed to the right side with respect to the door main body 10A on the left side in the figure, The right door body 10C is traversed to the right with respect to the central door body 10B. Regardless of the order of traversing, the right door main body 10C may traverse to the right first, and then the central door main body 10B may traverse to the right.

  When the central door main body 10B traverses the left door main body 10A, the rotating lever 51 maintains a state of being rotated at a substantially right angle from the initial position, and the cam pin 53 opens the straight portion 61 of the cam groove 60 on the open side ( It moves from the end on the anti-connection side to the end on the connection side. Even when the right door body 10C traverses the central door body 10B, the rotating lever 51 maintains a state of being rotated substantially at a right angle from the initial position, and the cam pin 53 opens the straight portion 61 of the cam groove 60 to the open side. It moves from the end on the anti-connection side to the end on the connection side.

  For this reason, the door main bodies 10A, 10B, and 10C maintain a parallel state separated by a predetermined interval, and the upper rails 20A and 20C on both sides also maintain a parallel state separated from the central upper rail 20B.

  When the cam pins 53, 53 of the door main body 10B move to the end portions on the connecting side of the linear portions 61 of the cam grooves 60, 60 of the door main bodies 10A, 10C on both sides, the upper rails 10A, 10C on both sides become the upper rails 10B on the center. As a result, the cam pins 53 and 53 are fitted into the respective engaging portions 62 of the cam grooves 60 and 60.

After that, when a force in the closing direction is continuously applied to the door main bodies 10B and 10C, the rotating levers 51 and 51 are inclined from the right angle state as shown in FIGS. Then, the upper rails 20A, 20C on both sides are pulled by the springs 25, 25 and translated toward the central upper rail 20B, and the rotating levers 51, 51 approach the linear state that is the initial position.

  When the upper rails 20A, 20C on both sides come closest to the central upper rail 20B, the door main bodies 10A, 10B, 10C are aligned in a flush state as shown in FIG. 9C, and the openings are completely closed. Also at this time, the cam pins 53, 53 of the coupling mechanisms 50, 50 continue to be fitted into the engaging portions 62, 62 of the cam grooves 60, 60, and the rotating levers 51, 51 are in the initial position due to the urging force of the spring. Keep straight. For this reason, the door main bodies 10A, 10B, and 10C maintain the closed state arranged in a flush state unless receiving external force in the opening direction.

  At this time, below the door main bodies 10A and 10C on both sides, the connecting levers 75, 76, and 77 are linearly arranged and elastically held by the respective guide mechanisms 70, so that the door main bodies 10A and 10C are brought together with the door main body 10B. It is held directly above the lower rail 30 (see FIG. 11D).

  When opening the door main bodies 10A, 10B, and 10C from the closed state, for example, when opening them to the left in FIGS. 8 and 9, an external force in the opening direction (external force to the left) is applied to the right door main body 10C. Here, the cam pins 53, 53 of the coupling mechanisms 50, 50 are fitted into the engaging portions 62, 62 of the cam grooves 60, 60 and are urged in the fitting direction. The cam pins 53 and 53 and the support shafts 52 and 52 are displaced with respect to a straight line parallel to the rail. Specifically, the support shafts 52 and 52 are connected to the upper rails 10A and 10C with respect to the cam pins 53 and 53. It is displaced in the direction of separation.

  Therefore, when an external force in the opening direction (external force to the left) is applied to the right door body 10C, the rotating levers 51, 51 are cam pins in the order shown in FIGS. 53 and 53 are rotated around the fulcrum, and the door bodies 10A and 10C on both sides are translated in a direction away from the center door body 10B. At this time, as described above, the upper rails 10A and 10B on both sides follow the parallel movement of the door main bodies 10A and 10C on both sides.

  When force is further applied, the door bodies 10A and 10C on both sides move together with the upper rails 10A and 10B on both sides to the state farthest from the center door body 10B [FIG. 8 (c)]. At this time, the cam pins 53 and 53 exit from the engaging portions 62 and 62 of the cam grooves 60 and 60 and enter the linear portions 61 and 6. When force is further applied, the cam pins 53 and 53 move in the straight portions 61 and 61 of the cam grooves 60 and 60 from the connection side to the non-connection side (open side) (FIGS. 8B and 8A). Thus, the door main bodies 10A, 10B, and 10C are completely overlapped again, and the opening is opened.

  As described above, in the sliding door according to the present embodiment, the door bodies 10A and 10C on both sides are aligned with the central door body 10B so that the door bodies 10A, 10B, and 10C are aligned in a flush state when the door bodies 10A, 10B, and 10C are closed. The parallel movement is executed by the parallel movement of the upper guides 20A and 20C on both sides supporting the door bodies 10A and 10C on both sides with respect to the central upper guide 20B. That is, the door main bodies 10A and 10C that move in parallel are interlocked with the upper guides 20A and 20C that support both sides. For this reason, the positional relationship between the two does not change, and a situation in which an unbalanced load is applied to the upper guides 20A and 20C is avoided, thereby ensuring a smooth operation of the door main bodies 10A and 10C.

  In the above embodiment, the sliding door has a three-sheet structure, but may have a two-sheet structure, and the number of doors is not particularly limited.

It is a top view of the upper rail of the sliding door which concerns on one Embodiment of this invention. It is a front view of the door main body of the sliding door. It is a top view which shows the link part of an upper rail about a separated state. It is an AA arrow line figure in FIG. It is a top view which shows the link part of an upper rail about an approach state. It is a side view of the link part. It is a top view which shows the connection mechanism between adjacent door main bodies. (A)-(c) is a top view which shows the first half of the process in which the sliding door opens stepwise. (A)-(c) is a top view which shows the latter half of the process in which the sliding door opens stepwise. It is a front view of the guide mechanism which guides the lower end part of the sliding door. (A)-(d) is a top view which shows operation | movement of the guide mechanism in steps.

Explanation of symbols

10A, 10B, 10C Door body 11A, 11B, 11C Roller 12, 13 Support bracket 20A, 20B, 20C Upper rail 21 Base plate 22 Support shaft 23 Support lever 25 Spring 30 Lower rail 40 Cover 50 Connection mechanism 51 Rotating lever 52 Support Shaft 53 Cam pin 60 Cam groove 61 Linear portion 62 Engaging portion 70 Guide mechanism 71, 72 Support pin 73, 74 Guide pin 75, 76, 77 Connecting lever 78 Spring 79 Stopper

Claims (4)

At least three sliding door bodies arranged in parallel in three rows with the openings open, and in a row in a flush state with the openings closed;
Connect one door body to the center door body so that one door body and the center door body overlap when the door body is opened. The door body is moved relatively parallel to the center door body so that the door body and the center door body are aligned in a row when the door body is closed. A first coupling mechanism to approach,
Connect the other door body to the center door body so that when the door body is opened, the other door body and the center door body overlap each other. The other door body is moved relatively parallel to the center door body so that the other door body and the center door body are aligned in a row when the door body is closed. A second coupling mechanism to approach,
In the sliding door provided with the central upper rail and the upper rails on both sides corresponding to the central door main body and the door main bodies on both sides in parallel above,
A central support mechanism that suspends and supports the central door body slidably along the central upper rail;
A both-side support mechanism that is attached to the opposite surface of the door body on both sides and suspendably supports the door body on both sides along the upper rails on both sides;
A parallel link mechanism for connecting the upper rail on both sides and the upper rail on the center;
The parallel link mechanism is a long base plate fixed to the lower surface of the upper crosspiece of the opening,
A support shaft for fixing the center upper rail to the lower side of the base plate,
A support lever supported on the support shaft so as to be pivotable on the upper side of the center upper rail and disposed obliquely with respect to the center upper rail;
A pair of both ends of the support lever in the longitudinal direction is fixed to the upper surfaces of the upper rails on both sides, and the upper and lower rails are arranged on both sides of the support shaft so as to be separated and accessible according to the turning of the support lever. The first pin,
A pair of second pins that are respectively attached to the upper surfaces of the upper rails on both sides and are opposed to each other across the support shaft;
A pair of springs that are respectively suspended between the first pin and the second pin and bias the rails on both sides toward the support shaft;
When the door body is opened, the support lever pivots against the urging force of the spring, and accordingly, the upper rails on both sides are separated from the support shaft, and the first and second connecting mechanisms are connected to the other door. By moving the main body relatively apart and parallel to the central door main body, the other door main body and the central door main body are arranged in three rows,
When the door body is closed, the support lever pivots due to the urging force of the spring, and accordingly, the upper rails on both sides approach the support shaft and are arranged on the upper side of the central upper rail, and the first and second coupling mechanisms However, on the other hand, the other door body is moved in parallel with and moved closer to the center door body, so that the other door body and the center door body are arranged in a line. Characteristic sliding door. On the upper surface of the door body on both sides, a linear cam groove having an engaging portion at the end on the center door body side is formed along the length direction of the door body on both sides,
The first connecting mechanism is freely rotatable from an initial position parallel to the central door body to a rotational position perpendicular to the central door body on the upper surface of one end portion in the length direction of the central door body. A pivot lever attached to the
It is provided on this rotating lever and is movably inserted into the cam groove of one door body, and the door body is located at the end of the cam groove on the side opposite to the engaging portion with the opening opened. The main body has a cam pin engaged with the engaging portion of the cam groove with the opening closed;
When opening the door body, the pivot lever pivots from the initial position to the pivot position, thereby moving one of the door bodies relatively away from the center door body, and the cam pin from the engaging portion of the cam groove. By moving the cam groove to the end on the side opposite to the engaging portion, one door body is moved in parallel relative to the central door body,
When closing the door body, the cam pin moves from the end of the cam groove opposite the engagement portion side to the engagement portion side, thereby moving one door body relative to the central door body, Is engaged with the engaging portion of the cam groove, and the pivot lever pivots from the pivot position to the initial position, thereby bringing one door body closer to the central door body. And
The second connecting mechanism rotates from the initial position parallel to the central door body to the rotational position perpendicular to the central door body on the upper surface of the other end in the length direction of the central door body. A freely mounted pivot lever,
While being provided in this pivoting lever, movably inserted in the cam groove of the other door body, and the door body is located at the end of the cam groove on the side opposite to the engaging portion with the opening opened, The door body has a cam pin engaged with the engaging portion of the cam groove with the opening closed;
When opening the door body, the pivot lever pivots from the initial position to the pivot position, thereby moving the other door body relatively away from the center door body, and the cam pin is moved away from the engaging portion of the cam groove. The other door body is moved in parallel relative to the center door body by moving the cam groove to the end on the side opposite to the engagement portion,
When the door body is closed, the cam pin moves from the end of the cam groove opposite the engagement portion side to the engagement portion side, thereby causing the other door body to move in parallel relative to the center door body. Is engaged with the engaging portion of the cam groove, and the rotation lever rotates from the rotation position to the initial position, thereby bringing the other door body closer to the center door body. pull difference door according to claim 1 are.   The sliding door according to claim 1, wherein the lower end of the door main body is guided by one lower rail, and the door main body and the lower rail that move parallel to the lower rail are connected by a guide mechanism that can extend and contract in the parallel movement direction. .   The guide mechanism is configured such that a lever is pivotably attached to the lower surface of the door body that moves in parallel with the lower rail, and a guide pin that slidably engages with the lower rail is attached to the tip of the lever. The sliding door according to claim 3, wherein the door body is configured to hold the door body in a parallel state away from the lower rail.

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